#if defined(QJS_BUILD_LIBC) && defined(__linux__) && !defined(_GNU_SOURCE) #define _GNU_SOURCE #endif /* * QuickJS C atomics definitions * * Copyright (c) 2023 Marcin Kolny * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #if (defined(__GNUC__) || defined(__GNUG__)) && !defined(__clang__) // Use GCC builtins for version < 4.9 # if((__GNUC__ << 16) + __GNUC_MINOR__ < ((4) << 16) + 9) # define GCC_BUILTIN_ATOMICS # endif #endif #ifdef GCC_BUILTIN_ATOMICS #define atomic_fetch_add(obj, arg) \ __atomic_fetch_add(obj, arg, __ATOMIC_SEQ_CST) #define atomic_compare_exchange_strong(obj, expected, desired) \ __atomic_compare_exchange_n(obj, expected, desired, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) #define atomic_exchange(obj, desired) \ __atomic_exchange_n (obj, desired, __ATOMIC_SEQ_CST) #define atomic_load(obj) \ __atomic_load_n(obj, __ATOMIC_SEQ_CST) #define atomic_store(obj, desired) \ __atomic_store_n(obj, desired, __ATOMIC_SEQ_CST) #define atomic_fetch_or(obj, arg) \ __atomic_fetch_or(obj, arg, __ATOMIC_SEQ_CST) #define atomic_fetch_xor(obj, arg) \ __atomic_fetch_xor(obj, arg, __ATOMIC_SEQ_CST) #define atomic_fetch_and(obj, arg) \ __atomic_fetch_and(obj, arg, __ATOMIC_SEQ_CST) #define atomic_fetch_sub(obj, arg) \ __atomic_fetch_sub(obj, arg, __ATOMIC_SEQ_CST) #define _Atomic #else #include #endif /* * C utilities * * Copyright (c) 2017 Fabrice Bellard * Copyright (c) 2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef CUTILS_H #define CUTILS_H #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif #if defined(_MSC_VER) #include #include #define alloca _alloca #define ssize_t ptrdiff_t #endif #if defined(__APPLE__) #include #elif defined(__linux__) || defined(__ANDROID__) || defined(__CYGWIN__) #include #elif defined(__FreeBSD__) #include #elif defined(_WIN32) #include #endif #if !defined(_WIN32) && !defined(EMSCRIPTEN) && !defined(__wasi__) #include #include #endif #if defined(_MSC_VER) && !defined(__clang__) # define likely(x) (x) # define unlikely(x) (x) # define force_inline __forceinline # define no_inline __declspec(noinline) # define __maybe_unused # define __attribute__(x) # define __attribute(x) #else # define likely(x) __builtin_expect(!!(x), 1) # define unlikely(x) __builtin_expect(!!(x), 0) # define force_inline inline __attribute__((always_inline)) # define no_inline __attribute__((noinline)) # define __maybe_unused __attribute__((unused)) #endif #if defined(_MSC_VER) && !defined(__clang__) #include #define INF INFINITY #define NEG_INF -INFINITY #else #define INF (1.0/0.0) #define NEG_INF (-1.0/0.0) #endif #ifndef offsetof #define offsetof(type, field) ((size_t) &((type *)0)->field) #endif #ifndef countof #define countof(x) (sizeof(x) / sizeof((x)[0])) #ifndef endof #define endof(x) ((x) + countof(x)) #endif #endif #ifndef container_of /* return the pointer of type 'type *' containing 'ptr' as field 'member' */ #define container_of(ptr, type, member) ((type *)((uint8_t *)(ptr) - offsetof(type, member))) #endif #if defined(_MSC_VER) #define minimum_length(n) n #else #define minimum_length(n) static n #endif /* Borrowed from Folly */ #ifndef JS_PRINTF_FORMAT #ifdef _MSC_VER #include #define JS_PRINTF_FORMAT _Printf_format_string_ #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) #else #define JS_PRINTF_FORMAT #if !defined(__clang__) && defined(__GNUC__) #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) \ __attribute__((format(gnu_printf, format_param, dots_param))) #else #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) \ __attribute__((format(printf, format_param, dots_param))) #endif #endif #endif //// #ifdef _WIN32 /* * Dirent interface for Microsoft Visual Studio * * Copyright (C) 1998-2019 Toni Ronkko * This file is part of dirent. Dirent may be freely distributed * under the MIT license. For all details and documentation, see * https://github.com/tronkko/dirent */ #ifndef DIRENT_H #define DIRENT_H /* Hide warnings about unreferenced local functions */ #if defined(__clang__) # pragma clang diagnostic ignored "-Wunused-function" #elif defined(_MSC_VER) # pragma warning(disable:4505) #elif defined(__GNUC__) # pragma GCC diagnostic ignored "-Wunused-function" #endif /* * Include windows.h without Windows Sockets 1.1 to prevent conflicts with * Windows Sockets 2.0. */ #ifndef WIN32_LEAN_AND_MEAN # define WIN32_LEAN_AND_MEAN #endif #include #include #include #include #include #include #include #include #include #include /* Indicates that d_type field is available in dirent structure */ #define _DIRENT_HAVE_D_TYPE /* Indicates that d_namlen field is available in dirent structure */ #define _DIRENT_HAVE_D_NAMLEN /* Entries missing from MSVC 6.0 */ #if !defined(FILE_ATTRIBUTE_DEVICE) # define FILE_ATTRIBUTE_DEVICE 0x40 #endif /* File type and permission flags for stat(), general mask */ #if !defined(S_IFMT) # define S_IFMT _S_IFMT #endif /* Directory bit */ #if !defined(S_IFDIR) # define S_IFDIR _S_IFDIR #endif /* Character device bit */ #if !defined(S_IFCHR) # define S_IFCHR _S_IFCHR #endif /* Pipe bit */ #if !defined(S_IFFIFO) # define S_IFFIFO _S_IFFIFO #endif /* Regular file bit */ #if !defined(S_IFREG) # define S_IFREG _S_IFREG #endif /* Read permission */ #if !defined(S_IREAD) # define S_IREAD _S_IREAD #endif /* Write permission */ #if !defined(S_IWRITE) # define S_IWRITE _S_IWRITE #endif /* Execute permission */ #if !defined(S_IEXEC) # define S_IEXEC _S_IEXEC #endif /* Pipe */ #if !defined(S_IFIFO) # define S_IFIFO _S_IFIFO #endif /* Block device */ #if !defined(S_IFBLK) # define S_IFBLK 0 #endif /* Link */ #if !defined(S_IFLNK) # define S_IFLNK 0 #endif /* Socket */ #if !defined(S_IFSOCK) # define S_IFSOCK 0 #endif /* Read user permission */ #if !defined(S_IRUSR) # define S_IRUSR S_IREAD #endif /* Write user permission */ #if !defined(S_IWUSR) # define S_IWUSR S_IWRITE #endif /* Execute user permission */ #if !defined(S_IXUSR) # define S_IXUSR 0 #endif /* Read group permission */ #if !defined(S_IRGRP) # define S_IRGRP 0 #endif /* Write group permission */ #if !defined(S_IWGRP) # define S_IWGRP 0 #endif /* Execute group permission */ #if !defined(S_IXGRP) # define S_IXGRP 0 #endif /* Read others permission */ #if !defined(S_IROTH) # define S_IROTH 0 #endif /* Write others permission */ #if !defined(S_IWOTH) # define S_IWOTH 0 #endif /* Execute others permission */ #if !defined(S_IXOTH) # define S_IXOTH 0 #endif /* Maximum length of file name */ #if !defined(PATH_MAX) # define PATH_MAX MAX_PATH #endif #if !defined(FILENAME_MAX) # define FILENAME_MAX MAX_PATH #endif #if !defined(NAME_MAX) # define NAME_MAX FILENAME_MAX #endif /* File type flags for d_type */ #define DT_UNKNOWN 0 #define DT_REG S_IFREG #define DT_DIR S_IFDIR #define DT_FIFO S_IFIFO #define DT_SOCK S_IFSOCK #define DT_CHR S_IFCHR #define DT_BLK S_IFBLK #define DT_LNK S_IFLNK /* Macros for converting between st_mode and d_type */ #define IFTODT(mode) ((mode) & S_IFMT) #define DTTOIF(type) (type) /* * File type macros. Note that block devices, sockets and links cannot be * distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are * only defined for compatibility. These macros should always return false * on Windows. */ #if !defined(S_ISFIFO) # define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO) #endif #if !defined(S_ISDIR) # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) #endif #if !defined(S_ISREG) # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) #endif #if !defined(S_ISLNK) # define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK) #endif #if !defined(S_ISSOCK) # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) #endif #if !defined(S_ISCHR) # define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) #endif #if !defined(S_ISBLK) # define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) #endif /* Return the exact length of the file name without zero terminator */ #define _D_EXACT_NAMLEN(p) ((p)->d_namlen) /* Return the maximum size of a file name */ #define _D_ALLOC_NAMLEN(p) ((PATH_MAX)+1) #ifdef __cplusplus extern "C" { #endif /* Wide-character version */ struct _wdirent { /* Always zero */ long d_ino; /* File position within stream */ long d_off; /* Structure size */ unsigned short d_reclen; /* Length of name without \0 */ size_t d_namlen; /* File type */ int d_type; /* File name */ wchar_t d_name[PATH_MAX+1]; }; typedef struct _wdirent _wdirent; struct _WDIR { /* Current directory entry */ struct _wdirent ent; /* Private file data */ WIN32_FIND_DATAW data; /* True if data is valid */ int cached; /* Win32 search handle */ HANDLE handle; /* Initial directory name */ wchar_t *patt; }; typedef struct _WDIR _WDIR; /* Multi-byte character version */ struct dirent { /* Always zero */ long d_ino; /* File position within stream */ long d_off; /* Structure size */ unsigned short d_reclen; /* Length of name without \0 */ size_t d_namlen; /* File type */ int d_type; /* File name */ char d_name[PATH_MAX+1]; }; typedef struct dirent dirent; struct DIR { struct dirent ent; struct _WDIR *wdirp; }; typedef struct DIR DIR; /* Dirent functions */ static DIR *opendir (const char *dirname); static _WDIR *_wopendir (const wchar_t *dirname); static struct dirent *readdir (DIR *dirp); static struct _wdirent *_wreaddir (_WDIR *dirp); static int readdir_r( DIR *dirp, struct dirent *entry, struct dirent **result); static int _wreaddir_r( _WDIR *dirp, struct _wdirent *entry, struct _wdirent **result); static int closedir (DIR *dirp); static int _wclosedir (_WDIR *dirp); static void rewinddir (DIR* dirp); static void _wrewinddir (_WDIR* dirp); static int scandir (const char *dirname, struct dirent ***namelist, int (*filter)(const struct dirent*), int (*compare)(const struct dirent**, const struct dirent**)); static int alphasort (const struct dirent **a, const struct dirent **b); static int versionsort (const struct dirent **a, const struct dirent **b); /* For compatibility with Symbian */ #define wdirent _wdirent #define WDIR _WDIR #define wopendir _wopendir #define wreaddir _wreaddir #define wclosedir _wclosedir #define wrewinddir _wrewinddir /* Internal utility functions */ static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp); static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp); static int dirent_mbstowcs_s( size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, const char *mbstr, size_t count); static int dirent_wcstombs_s( size_t *pReturnValue, char *mbstr, size_t sizeInBytes, const wchar_t *wcstr, size_t count); static void dirent_set_errno (int error); /* * Open directory stream DIRNAME for read and return a pointer to the * internal working area that is used to retrieve individual directory * entries. */ static _WDIR* _wopendir( const wchar_t *dirname) { _WDIR *dirp; #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) /* Desktop */ DWORD n; #else /* WinRT */ size_t n; #endif wchar_t *p; /* Must have directory name */ if (dirname == NULL || dirname[0] == '\0') { dirent_set_errno (ENOENT); return NULL; } /* Allocate new _WDIR structure */ dirp = (_WDIR*) malloc (sizeof (struct _WDIR)); if (!dirp) { return NULL; } /* Reset _WDIR structure */ dirp->handle = INVALID_HANDLE_VALUE; dirp->patt = NULL; dirp->cached = 0; /* * Compute the length of full path plus zero terminator * * Note that on WinRT there's no way to convert relative paths * into absolute paths, so just assume it is an absolute path. */ #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) /* Desktop */ n = GetFullPathNameW (dirname, 0, NULL, NULL); #else /* WinRT */ n = wcslen (dirname); #endif /* Allocate room for absolute directory name and search pattern */ dirp->patt = (wchar_t*) malloc (sizeof (wchar_t) * n + 16); if (dirp->patt == NULL) { goto exit_closedir; } /* * Convert relative directory name to an absolute one. This * allows rewinddir() to function correctly even when current * working directory is changed between opendir() and rewinddir(). * * Note that on WinRT there's no way to convert relative paths * into absolute paths, so just assume it is an absolute path. */ #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) /* Desktop */ n = GetFullPathNameW (dirname, n, dirp->patt, NULL); if (n <= 0) { goto exit_closedir; } #else /* WinRT */ wcsncpy_s (dirp->patt, n+1, dirname, n); #endif /* Append search pattern \* to the directory name */ p = dirp->patt + n; switch (p[-1]) { case '\\': case '/': case ':': /* Directory ends in path separator, e.g. c:\temp\ */ /*NOP*/; break; default: /* Directory name doesn't end in path separator */ *p++ = '\\'; } *p++ = '*'; *p = '\0'; /* Open directory stream and retrieve the first entry */ if (!dirent_first (dirp)) { goto exit_closedir; } /* Success */ return dirp; /* Failure */ exit_closedir: _wclosedir (dirp); return NULL; } /* * Read next directory entry. * * Returns pointer to static directory entry which may be overwritten by * subsequent calls to _wreaddir(). */ static struct _wdirent* _wreaddir( _WDIR *dirp) { struct _wdirent *entry; /* * Read directory entry to buffer. We can safely ignore the return value * as entry will be set to NULL in case of error. */ (void) _wreaddir_r (dirp, &dirp->ent, &entry); /* Return pointer to statically allocated directory entry */ return entry; } /* * Read next directory entry. * * Returns zero on success. If end of directory stream is reached, then sets * result to NULL and returns zero. */ static int _wreaddir_r( _WDIR *dirp, struct _wdirent *entry, struct _wdirent **result) { WIN32_FIND_DATAW *datap; /* Read next directory entry */ datap = dirent_next (dirp); if (datap) { size_t n; DWORD attr; /* * Copy file name as wide-character string. If the file name is too * long to fit in to the destination buffer, then truncate file name * to PATH_MAX characters and zero-terminate the buffer. */ n = 0; while (n < PATH_MAX && datap->cFileName[n] != 0) { entry->d_name[n] = datap->cFileName[n]; n++; } entry->d_name[n] = 0; /* Length of file name excluding zero terminator */ entry->d_namlen = n; /* File type */ attr = datap->dwFileAttributes; if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) { entry->d_type = DT_CHR; } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { entry->d_type = DT_DIR; } else { entry->d_type = DT_REG; } /* Reset dummy fields */ entry->d_ino = 0; entry->d_off = 0; entry->d_reclen = sizeof (struct _wdirent); /* Set result address */ *result = entry; } else { /* Return NULL to indicate end of directory */ *result = NULL; } return /*OK*/0; } /* * Close directory stream opened by opendir() function. This invalidates the * DIR structure as well as any directory entry read previously by * _wreaddir(). */ static int _wclosedir( _WDIR *dirp) { int ok; if (dirp) { /* Release search handle */ if (dirp->handle != INVALID_HANDLE_VALUE) { FindClose (dirp->handle); } /* Release search pattern */ free (dirp->patt); /* Release directory structure */ free (dirp); ok = /*success*/0; } else { /* Invalid directory stream */ dirent_set_errno (EBADF); ok = /*failure*/-1; } return ok; } /* * Rewind directory stream such that _wreaddir() returns the very first * file name again. */ static void _wrewinddir( _WDIR* dirp) { if (dirp) { /* Release existing search handle */ if (dirp->handle != INVALID_HANDLE_VALUE) { FindClose (dirp->handle); } /* Open new search handle */ dirent_first (dirp); } } /* Get first directory entry (internal) */ static WIN32_FIND_DATAW* dirent_first( _WDIR *dirp) { WIN32_FIND_DATAW *datap; DWORD error; /* Open directory and retrieve the first entry */ dirp->handle = FindFirstFileExW( dirp->patt, FindExInfoStandard, &dirp->data, FindExSearchNameMatch, NULL, 0); if (dirp->handle != INVALID_HANDLE_VALUE) { /* a directory entry is now waiting in memory */ datap = &dirp->data; dirp->cached = 1; } else { /* Failed to open directory: no directory entry in memory */ dirp->cached = 0; datap = NULL; /* Set error code */ error = GetLastError (); switch (error) { case ERROR_ACCESS_DENIED: /* No read access to directory */ dirent_set_errno (EACCES); break; case ERROR_DIRECTORY: /* Directory name is invalid */ dirent_set_errno (ENOTDIR); break; case ERROR_PATH_NOT_FOUND: default: /* Cannot find the file */ dirent_set_errno (ENOENT); } } return datap; } /* * Get next directory entry (internal). * * Returns */ static WIN32_FIND_DATAW* dirent_next( _WDIR *dirp) { WIN32_FIND_DATAW *p; /* Get next directory entry */ if (dirp->cached != 0) { /* A valid directory entry already in memory */ p = &dirp->data; dirp->cached = 0; } else if (dirp->handle != INVALID_HANDLE_VALUE) { /* Get the next directory entry from stream */ if (FindNextFileW (dirp->handle, &dirp->data) != 0) { /* Got a file */ p = &dirp->data; } else { /* The very last entry has been processed or an error occurred */ FindClose (dirp->handle); dirp->handle = INVALID_HANDLE_VALUE; p = NULL; } } else { /* End of directory stream reached */ p = NULL; } return p; } /* * Open directory stream using plain old C-string. */ static DIR* opendir( const char *dirname) { struct DIR *dirp; /* Must have directory name */ if (dirname == NULL || dirname[0] == '\0') { dirent_set_errno (ENOENT); return NULL; } /* Allocate memory for DIR structure */ dirp = (DIR*) malloc (sizeof (struct DIR)); if (!dirp) { return NULL; } { int error; wchar_t wname[PATH_MAX + 1]; size_t n; /* Convert directory name to wide-character string */ error = dirent_mbstowcs_s( &n, wname, PATH_MAX + 1, dirname, PATH_MAX + 1); if (error) { /* * Cannot convert file name to wide-character string. This * occurs if the string contains invalid multi-byte sequences or * the output buffer is too small to contain the resulting * string. */ goto exit_free; } /* Open directory stream using wide-character name */ dirp->wdirp = _wopendir (wname); if (!dirp->wdirp) { goto exit_free; } } /* Success */ return dirp; /* Failure */ exit_free: free (dirp); return NULL; } /* * Read next directory entry. */ static struct dirent* readdir( DIR *dirp) { struct dirent *entry; /* * Read directory entry to buffer. We can safely ignore the return value * as entry will be set to NULL in case of error. */ (void) readdir_r (dirp, &dirp->ent, &entry); /* Return pointer to statically allocated directory entry */ return entry; } /* * Read next directory entry into called-allocated buffer. * * Returns zero on success. If the end of directory stream is reached, then * sets result to NULL and returns zero. */ static int readdir_r( DIR *dirp, struct dirent *entry, struct dirent **result) { WIN32_FIND_DATAW *datap; /* Read next directory entry */ datap = dirent_next (dirp->wdirp); if (datap) { size_t n; int error; /* Attempt to convert file name to multi-byte string */ error = dirent_wcstombs_s( &n, entry->d_name, PATH_MAX + 1, datap->cFileName, PATH_MAX + 1); /* * If the file name cannot be represented by a multi-byte string, * then attempt to use old 8+3 file name. This allows traditional * Unix-code to access some file names despite of unicode * characters, although file names may seem unfamiliar to the user. * * Be ware that the code below cannot come up with a short file * name unless the file system provides one. At least * VirtualBox shared folders fail to do this. */ if (error && datap->cAlternateFileName[0] != '\0') { error = dirent_wcstombs_s( &n, entry->d_name, PATH_MAX + 1, datap->cAlternateFileName, PATH_MAX + 1); } if (!error) { DWORD attr; /* Length of file name excluding zero terminator */ entry->d_namlen = n - 1; /* File attributes */ attr = datap->dwFileAttributes; if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) { entry->d_type = DT_CHR; } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { entry->d_type = DT_DIR; } else { entry->d_type = DT_REG; } /* Reset dummy fields */ entry->d_ino = 0; entry->d_off = 0; entry->d_reclen = sizeof (struct dirent); } else { /* * Cannot convert file name to multi-byte string so construct * an erroneous directory entry and return that. Note that * we cannot return NULL as that would stop the processing * of directory entries completely. */ entry->d_name[0] = '?'; entry->d_name[1] = '\0'; entry->d_namlen = 1; entry->d_type = DT_UNKNOWN; entry->d_ino = 0; entry->d_off = -1; entry->d_reclen = 0; } /* Return pointer to directory entry */ *result = entry; } else { /* No more directory entries */ *result = NULL; } return /*OK*/0; } /* * Close directory stream. */ static int closedir( DIR *dirp) { int ok; if (dirp) { /* Close wide-character directory stream */ ok = _wclosedir (dirp->wdirp); dirp->wdirp = NULL; /* Release multi-byte character version */ free (dirp); } else { /* Invalid directory stream */ dirent_set_errno (EBADF); ok = /*failure*/-1; } return ok; } /* * Rewind directory stream to beginning. */ static void rewinddir( DIR* dirp) { /* Rewind wide-character string directory stream */ _wrewinddir (dirp->wdirp); } /* * Scan directory for entries. */ static int scandir( const char *dirname, struct dirent ***namelist, int (*filter)(const struct dirent*), int (*compare)(const struct dirent**, const struct dirent**)) { struct dirent **files = NULL; size_t size = 0; size_t allocated = 0; const size_t init_size = 1; DIR *dir = NULL; struct dirent *entry; struct dirent *tmp = NULL; size_t i; int result = 0; /* Open directory stream */ dir = opendir (dirname); if (dir) { /* Read directory entries to memory */ while (1) { /* Enlarge pointer table to make room for another pointer */ if (size >= allocated) { void *p; size_t num_entries; /* Compute number of entries in the enlarged pointer table */ if (size < init_size) { /* Allocate initial pointer table */ num_entries = init_size; } else { /* Double the size */ num_entries = size * 2; } /* Allocate first pointer table or enlarge existing table */ p = realloc (files, sizeof (void*) * num_entries); if (p != NULL) { /* Got the memory */ files = (dirent**) p; allocated = num_entries; } else { /* Out of memory */ result = -1; break; } } /* Allocate room for temporary directory entry */ if (tmp == NULL) { tmp = (struct dirent*) malloc (sizeof (struct dirent)); if (tmp == NULL) { /* Cannot allocate temporary directory entry */ result = -1; break; } } /* Read directory entry to temporary area */ if (readdir_r (dir, tmp, &entry) == /*OK*/0) { /* Did we get an entry? */ if (entry != NULL) { int pass; /* Determine whether to include the entry in result */ if (filter) { /* Let the filter function decide */ pass = filter (tmp); } else { /* No filter function, include everything */ pass = 1; } if (pass) { /* Store the temporary entry to pointer table */ files[size++] = tmp; tmp = NULL; /* Keep up with the number of files */ result++; } } else { /* * End of directory stream reached => sort entries and * exit. */ qsort (files, size, sizeof (void*), (int (*) (const void*, const void*)) compare); break; } } else { /* Error reading directory entry */ result = /*Error*/ -1; break; } } } else { /* Cannot open directory */ result = /*Error*/ -1; } /* Release temporary directory entry */ free (tmp); /* Release allocated memory on error */ if (result < 0) { for (i = 0; i < size; i++) { free (files[i]); } free (files); files = NULL; } /* Close directory stream */ if (dir) { closedir (dir); } /* Pass pointer table to caller */ if (namelist) { *namelist = files; } return result; } /* Alphabetical sorting */ static int alphasort( const struct dirent **a, const struct dirent **b) { return strcoll ((*a)->d_name, (*b)->d_name); } /* Sort versions */ static int versionsort( const struct dirent **a, const struct dirent **b) { /* FIXME: implement strverscmp and use that */ return alphasort (a, b); } /* Convert multi-byte string to wide character string */ static int dirent_mbstowcs_s( size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, const char *mbstr, size_t count) { int error; #if defined(_MSC_VER) && _MSC_VER >= 1400 /* Microsoft Visual Studio 2005 or later */ error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count); #else /* Older Visual Studio or non-Microsoft compiler */ size_t n; /* Convert to wide-character string (or count characters) */ n = mbstowcs (wcstr, mbstr, sizeInWords); if (!wcstr || n < count) { /* Zero-terminate output buffer */ if (wcstr && sizeInWords) { if (n >= sizeInWords) { n = sizeInWords - 1; } wcstr[n] = 0; } /* Length of resulting multi-byte string WITH zero terminator */ if (pReturnValue) { *pReturnValue = n + 1; } /* Success */ error = 0; } else { /* Could not convert string */ error = 1; } #endif return error; } /* Convert wide-character string to multi-byte string */ static int dirent_wcstombs_s( size_t *pReturnValue, char *mbstr, size_t sizeInBytes, /* max size of mbstr */ const wchar_t *wcstr, size_t count) { int error; #if defined(_MSC_VER) && _MSC_VER >= 1400 /* Microsoft Visual Studio 2005 or later */ error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count); #else /* Older Visual Studio or non-Microsoft compiler */ size_t n; /* Convert to multi-byte string (or count the number of bytes needed) */ n = wcstombs (mbstr, wcstr, sizeInBytes); if (!mbstr || n < count) { /* Zero-terminate output buffer */ if (mbstr && sizeInBytes) { if (n >= sizeInBytes) { n = sizeInBytes - 1; } mbstr[n] = '\0'; } /* Length of resulting multi-bytes string WITH zero-terminator */ if (pReturnValue) { *pReturnValue = n + 1; } /* Success */ error = 0; } else { /* Cannot convert string */ error = 1; } #endif return error; } /* Set errno variable */ static void dirent_set_errno( int error) { #if defined(_MSC_VER) && _MSC_VER >= 1400 /* Microsoft Visual Studio 2005 and later */ _set_errno (error); #else /* Non-Microsoft compiler or older Microsoft compiler */ errno = error; #endif } #ifdef __cplusplus } #endif #endif /*DIRENT_H*/ #endif // _WIN32 //// void js__pstrcpy(char *buf, int buf_size, const char *str); char *js__pstrcat(char *buf, int buf_size, const char *s); int js__strstart(const char *str, const char *val, const char **ptr); int js__has_suffix(const char *str, const char *suffix); static inline uint8_t is_be(void) { union { uint16_t a; uint8_t b; } u = { 0x100 }; return u.b; } static inline int max_int(int a, int b) { if (a > b) return a; else return b; } static inline int min_int(int a, int b) { if (a < b) return a; else return b; } static inline uint32_t max_uint32(uint32_t a, uint32_t b) { if (a > b) return a; else return b; } static inline uint32_t min_uint32(uint32_t a, uint32_t b) { if (a < b) return a; else return b; } static inline int64_t max_int64(int64_t a, int64_t b) { if (a > b) return a; else return b; } static inline int64_t min_int64(int64_t a, int64_t b) { if (a < b) return a; else return b; } /* WARNING: undefined if a = 0 */ static inline int clz32(unsigned int a) { #if defined(_MSC_VER) && !defined(__clang__) unsigned long index; _BitScanReverse(&index, a); return 31 - index; #else return __builtin_clz(a); #endif } /* WARNING: undefined if a = 0 */ static inline int clz64(uint64_t a) { #if defined(_MSC_VER) && !defined(__clang__) #if INTPTR_MAX == INT64_MAX unsigned long index; _BitScanReverse64(&index, a); return 63 - index; #else if (a >> 32) return clz32((unsigned)(a >> 32)); else return clz32((unsigned)a) + 32; #endif #else return __builtin_clzll(a); #endif } /* WARNING: undefined if a = 0 */ static inline int ctz32(unsigned int a) { #if defined(_MSC_VER) && !defined(__clang__) unsigned long index; _BitScanForward(&index, a); return index; #else return __builtin_ctz(a); #endif } /* WARNING: undefined if a = 0 */ static inline int ctz64(uint64_t a) { #if defined(_MSC_VER) && !defined(__clang__) unsigned long index; _BitScanForward64(&index, a); return index; #else return __builtin_ctzll(a); #endif } static inline uint64_t get_u64(const uint8_t *tab) { uint64_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline int64_t get_i64(const uint8_t *tab) { int64_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline void put_u64(uint8_t *tab, uint64_t val) { memcpy(tab, &val, sizeof(val)); } static inline uint32_t get_u32(const uint8_t *tab) { uint32_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline int32_t get_i32(const uint8_t *tab) { int32_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline void put_u32(uint8_t *tab, uint32_t val) { memcpy(tab, &val, sizeof(val)); } static inline uint32_t get_u16(const uint8_t *tab) { uint16_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline int32_t get_i16(const uint8_t *tab) { int16_t v; memcpy(&v, tab, sizeof(v)); return v; } static inline void put_u16(uint8_t *tab, uint16_t val) { memcpy(tab, &val, sizeof(val)); } static inline uint32_t get_u8(const uint8_t *tab) { return *tab; } static inline int32_t get_i8(const uint8_t *tab) { return (int8_t)*tab; } static inline void put_u8(uint8_t *tab, uint8_t val) { *tab = val; } #ifndef bswap16 static inline uint16_t bswap16(uint16_t x) { return (x >> 8) | (x << 8); } #endif #ifndef bswap32 static inline uint32_t bswap32(uint32_t v) { return ((v & 0xff000000) >> 24) | ((v & 0x00ff0000) >> 8) | ((v & 0x0000ff00) << 8) | ((v & 0x000000ff) << 24); } #endif #ifndef bswap64 static inline uint64_t bswap64(uint64_t v) { return ((v & ((uint64_t)0xff << (7 * 8))) >> (7 * 8)) | ((v & ((uint64_t)0xff << (6 * 8))) >> (5 * 8)) | ((v & ((uint64_t)0xff << (5 * 8))) >> (3 * 8)) | ((v & ((uint64_t)0xff << (4 * 8))) >> (1 * 8)) | ((v & ((uint64_t)0xff << (3 * 8))) << (1 * 8)) | ((v & ((uint64_t)0xff << (2 * 8))) << (3 * 8)) | ((v & ((uint64_t)0xff << (1 * 8))) << (5 * 8)) | ((v & ((uint64_t)0xff << (0 * 8))) << (7 * 8)); } #endif static inline void inplace_bswap16(uint8_t *tab) { put_u16(tab, bswap16(get_u16(tab))); } static inline void inplace_bswap32(uint8_t *tab) { put_u32(tab, bswap32(get_u32(tab))); } static inline double fromfp16(uint16_t v) { double d, s; int e; if ((v & 0x7C00) == 0x7C00) { d = (v & 0x3FF) ? NAN : INFINITY; } else { d = (v & 0x3FF) / 1024.; e = (v & 0x7C00) >> 10; if (e == 0) { e = -14; } else { d += 1; e -= 15; } d = scalbn(d, e); } s = (v & 0x8000) ? -1.0 : 1.0; return d * s; } static inline uint16_t tofp16(double d) { uint16_t f, s; double t; int e; s = 0; if (copysign(1, d) < 0) { // preserve sign when |d| is negative zero d = -d; s = 0x8000; } if (isinf(d)) return s | 0x7C00; if (isnan(d)) return s | 0x7C01; if (d == 0) return s | 0; d = 2 * frexp(d, &e); e--; if (e > 15) return s | 0x7C00; // out of range, return +/-infinity if (e < -25) { d = 0; e = 0; } else if (e < -14) { d = scalbn(d, e + 14); e = 0; } else { d -= 1; e += 15; } d *= 1024.; f = (uint16_t)d; t = d - f; if (t < 0.5) goto done; if (t == 0.5) if ((f & 1) == 0) goto done; // adjust for rounding if (++f == 1024) { f = 0; if (++e == 31) return s | 0x7C00; // out of range, return +/-infinity } done: return s | (e << 10) | f; } static inline int isfp16nan(uint16_t v) { return (v & 0x7FFF) > 0x7C00; } static inline int isfp16zero(uint16_t v) { return (v & 0x7FFF) == 0; } /* XXX: should take an extra argument to pass slack information to the caller */ typedef void *DynBufReallocFunc(void *opaque, void *ptr, size_t size); typedef struct DynBuf { uint8_t *buf; size_t size; size_t allocated_size; bool error; /* true if a memory allocation error occurred */ DynBufReallocFunc *realloc_func; void *opaque; /* for realloc_func */ } DynBuf; void dbuf_init(DynBuf *s); void dbuf_init2(DynBuf *s, void *opaque, DynBufReallocFunc *realloc_func); int dbuf_realloc(DynBuf *s, size_t new_size); int dbuf_write(DynBuf *s, size_t offset, const void *data, size_t len); int dbuf_put(DynBuf *s, const void *data, size_t len); int dbuf_put_self(DynBuf *s, size_t offset, size_t len); int dbuf_putc(DynBuf *s, uint8_t c); int dbuf_putstr(DynBuf *s, const char *str); static inline int dbuf_put_u16(DynBuf *s, uint16_t val) { return dbuf_put(s, (uint8_t *)&val, 2); } static inline int dbuf_put_u32(DynBuf *s, uint32_t val) { return dbuf_put(s, (uint8_t *)&val, 4); } static inline int dbuf_put_u64(DynBuf *s, uint64_t val) { return dbuf_put(s, (uint8_t *)&val, 8); } int JS_PRINTF_FORMAT_ATTR(2, 3) dbuf_printf(DynBuf *s, JS_PRINTF_FORMAT const char *fmt, ...); void dbuf_free(DynBuf *s); static inline bool dbuf_error(DynBuf *s) { return s->error; } static inline void dbuf_set_error(DynBuf *s) { s->error = true; } /*---- UTF-8 and UTF-16 handling ----*/ #define UTF8_CHAR_LEN_MAX 4 enum { UTF8_PLAIN_ASCII = 0, // 7-bit ASCII plain text UTF8_NON_ASCII = 1, // has non ASCII code points (8-bit or more) UTF8_HAS_16BIT = 2, // has 16-bit code points UTF8_HAS_NON_BMP1 = 4, // has non-BMP1 code points, needs UTF-16 surrogate pairs UTF8_HAS_ERRORS = 8, // has encoding errors }; int utf8_scan(const char *buf, size_t len, size_t *plen); size_t utf8_encode_len(uint32_t c); size_t utf8_encode(uint8_t buf[minimum_length(UTF8_CHAR_LEN_MAX)], uint32_t c); uint32_t utf8_decode_len(const uint8_t *p, size_t max_len, const uint8_t **pp); uint32_t utf8_decode(const uint8_t *p, const uint8_t **pp); size_t utf8_decode_buf8(uint8_t *dest, size_t dest_len, const char *src, size_t src_len); size_t utf8_decode_buf16(uint16_t *dest, size_t dest_len, const char *src, size_t src_len); size_t utf8_encode_buf8(char *dest, size_t dest_len, const uint8_t *src, size_t src_len); size_t utf8_encode_buf16(char *dest, size_t dest_len, const uint16_t *src, size_t src_len); static inline bool is_surrogate(uint32_t c) { return (c >> 11) == (0xD800 >> 11); // 0xD800-0xDFFF } static inline bool is_hi_surrogate(uint32_t c) { return (c >> 10) == (0xD800 >> 10); // 0xD800-0xDBFF } static inline bool is_lo_surrogate(uint32_t c) { return (c >> 10) == (0xDC00 >> 10); // 0xDC00-0xDFFF } static inline uint32_t get_hi_surrogate(uint32_t c) { return (c >> 10) - (0x10000 >> 10) + 0xD800; } static inline uint32_t get_lo_surrogate(uint32_t c) { return (c & 0x3FF) | 0xDC00; } static inline uint32_t from_surrogate(uint32_t hi, uint32_t lo) { return 65536 + 1024 * (hi & 1023) + (lo & 1023); } static inline int from_hex(int c) { if (c >= '0' && c <= '9') return c - '0'; else if (c >= 'A' && c <= 'F') return c - 'A' + 10; else if (c >= 'a' && c <= 'f') return c - 'a' + 10; else return -1; } static inline uint8_t is_upper_ascii(uint8_t c) { return c >= 'A' && c <= 'Z'; } static inline uint8_t to_upper_ascii(uint8_t c) { return c >= 'a' && c <= 'z' ? c - 'a' + 'A' : c; } extern char const digits36[36]; size_t u32toa(char buf[minimum_length(11)], uint32_t n); size_t i32toa(char buf[minimum_length(12)], int32_t n); size_t u64toa(char buf[minimum_length(21)], uint64_t n); size_t i64toa(char buf[minimum_length(22)], int64_t n); size_t u32toa_radix(char buf[minimum_length(33)], uint32_t n, unsigned int base); size_t i32toa_radix(char buf[minimum_length(34)], int32_t n, unsigned base); size_t u64toa_radix(char buf[minimum_length(65)], uint64_t n, unsigned int base); size_t i64toa_radix(char buf[minimum_length(66)], int64_t n, unsigned int base); void rqsort(void *base, size_t nmemb, size_t size, int (*cmp)(const void *, const void *, void *), void *arg); int64_t js__gettimeofday_us(void); uint64_t js__hrtime_ns(void); static inline size_t js__malloc_usable_size(const void *ptr) { #if defined(__APPLE__) return malloc_size(ptr); #elif defined(_WIN32) return _msize((void *)ptr); #elif defined(__linux__) || defined(__ANDROID__) || defined(__CYGWIN__) || defined(__FreeBSD__) return malloc_usable_size((void *)ptr); #else return 0; #endif } /* Cross-platform threading APIs. */ #if !defined(EMSCRIPTEN) && !defined(__wasi__) #if defined(_WIN32) #define JS_ONCE_INIT INIT_ONCE_STATIC_INIT typedef INIT_ONCE js_once_t; typedef CRITICAL_SECTION js_mutex_t; typedef CONDITION_VARIABLE js_cond_t; #else #define JS_ONCE_INIT PTHREAD_ONCE_INIT typedef pthread_once_t js_once_t; typedef pthread_mutex_t js_mutex_t; typedef pthread_cond_t js_cond_t; #endif void js_once(js_once_t *guard, void (*callback)(void)); void js_mutex_init(js_mutex_t *mutex); void js_mutex_destroy(js_mutex_t *mutex); void js_mutex_lock(js_mutex_t *mutex); void js_mutex_unlock(js_mutex_t *mutex); void js_cond_init(js_cond_t *cond); void js_cond_destroy(js_cond_t *cond); void js_cond_signal(js_cond_t *cond); void js_cond_broadcast(js_cond_t *cond); void js_cond_wait(js_cond_t *cond, js_mutex_t *mutex); int js_cond_timedwait(js_cond_t *cond, js_mutex_t *mutex, uint64_t timeout); #endif /* !defined(EMSCRIPTEN) && !defined(__wasi__) */ #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* CUTILS_H */ /* * Linux klist like system * * Copyright (c) 2016-2017 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef LIST_H #define LIST_H #ifndef NULL #include #endif #ifdef __cplusplus extern "C" { #endif struct list_head { struct list_head *prev; struct list_head *next; }; #define LIST_HEAD_INIT(el) { &(el), &(el) } /* return the pointer of type 'type *' containing 'el' as field 'member' */ #define list_entry(el, type, member) container_of(el, type, member) static inline void init_list_head(struct list_head *head) { head->prev = head; head->next = head; } /* insert 'el' between 'prev' and 'next' */ static inline void __list_add(struct list_head *el, struct list_head *prev, struct list_head *next) { prev->next = el; el->prev = prev; el->next = next; next->prev = el; } /* add 'el' at the head of the list 'head' (= after element head) */ static inline void list_add(struct list_head *el, struct list_head *head) { __list_add(el, head, head->next); } /* add 'el' at the end of the list 'head' (= before element head) */ static inline void list_add_tail(struct list_head *el, struct list_head *head) { __list_add(el, head->prev, head); } static inline void list_del(struct list_head *el) { struct list_head *prev, *next; prev = el->prev; next = el->next; prev->next = next; next->prev = prev; el->prev = NULL; /* fail safe */ el->next = NULL; /* fail safe */ } static inline int list_empty(struct list_head *el) { return el->next == el; } #define list_for_each(el, head) \ for(el = (head)->next; el != (head); el = el->next) #define list_for_each_safe(el, el1, head) \ for(el = (head)->next, el1 = el->next; el != (head); \ el = el1, el1 = el->next) #define list_for_each_prev(el, head) \ for(el = (head)->prev; el != (head); el = el->prev) #define list_for_each_prev_safe(el, el1, head) \ for(el = (head)->prev, el1 = el->prev; el != (head); \ el = el1, el1 = el->prev) #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* LIST_H */ /* * Tiny arbitrary precision floating point library * * Copyright (c) 2017-2021 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef LIBBF_H #define LIBBF_H #include #include #ifdef __cplusplus extern "C" { #endif #if INTPTR_MAX >= INT64_MAX && !defined(_WIN32) && !defined(__TINYC__) #define LIMB_LOG2_BITS 6 #else #define LIMB_LOG2_BITS 5 #endif #define LIMB_BITS (1 << LIMB_LOG2_BITS) #if LIMB_BITS == 64 #ifndef INT128_MAX __extension__ typedef __int128 int128_t; __extension__ typedef unsigned __int128 uint128_t; #endif typedef int64_t slimb_t; typedef uint64_t limb_t; typedef uint128_t dlimb_t; #define BF_RAW_EXP_MIN INT64_MIN #define BF_RAW_EXP_MAX INT64_MAX #define LIMB_DIGITS 19 #define BF_DEC_BASE UINT64_C(10000000000000000000) #else typedef int32_t slimb_t; typedef uint32_t limb_t; typedef uint64_t dlimb_t; #define BF_RAW_EXP_MIN INT32_MIN #define BF_RAW_EXP_MAX INT32_MAX #define LIMB_DIGITS 9 #define BF_DEC_BASE 1000000000U #endif /* in bits */ /* minimum number of bits for the exponent */ #define BF_EXP_BITS_MIN 3 /* maximum number of bits for the exponent */ #define BF_EXP_BITS_MAX (LIMB_BITS - 3) /* extended range for exponent, used internally */ #define BF_EXT_EXP_BITS_MAX (BF_EXP_BITS_MAX + 1) /* minimum possible precision */ #define BF_PREC_MIN 2 /* minimum possible precision */ #define BF_PREC_MAX (((limb_t)1 << (LIMB_BITS - 2)) - 2) /* some operations support infinite precision */ #define BF_PREC_INF (BF_PREC_MAX + 1) /* infinite precision */ #if LIMB_BITS == 64 #define BF_CHKSUM_MOD (UINT64_C(975620677) * UINT64_C(9795002197)) #else #define BF_CHKSUM_MOD 975620677U #endif #define BF_EXP_ZERO BF_RAW_EXP_MIN #define BF_EXP_INF (BF_RAW_EXP_MAX - 1) #define BF_EXP_NAN BF_RAW_EXP_MAX /* +/-zero is represented with expn = BF_EXP_ZERO and len = 0, +/-infinity is represented with expn = BF_EXP_INF and len = 0, NaN is represented with expn = BF_EXP_NAN and len = 0 (sign is ignored) */ typedef struct { struct bf_context_t *ctx; int sign; slimb_t expn; limb_t len; limb_t *tab; } bf_t; typedef struct { /* must be kept identical to bf_t */ struct bf_context_t *ctx; int sign; slimb_t expn; limb_t len; limb_t *tab; } bfdec_t; typedef enum { BF_RNDN, /* round to nearest, ties to even */ BF_RNDZ, /* round to zero */ BF_RNDD, /* round to -inf (the code relies on (BF_RNDD xor BF_RNDU) = 1) */ BF_RNDU, /* round to +inf */ BF_RNDNA, /* round to nearest, ties away from zero */ BF_RNDA, /* round away from zero */ BF_RNDF, /* faithful rounding (nondeterministic, either RNDD or RNDU, inexact flag is always set) */ } bf_rnd_t; /* allow subnormal numbers. Only available if the number of exponent bits is <= BF_EXP_BITS_USER_MAX and prec != BF_PREC_INF. */ #define BF_FLAG_SUBNORMAL (1 << 3) /* 'prec' is the precision after the radix point instead of the whole mantissa. Can only be used with bf_round() and bfdec_[add|sub|mul|div|sqrt|round](). */ #define BF_FLAG_RADPNT_PREC (1 << 4) #define BF_RND_MASK 0x7 #define BF_EXP_BITS_SHIFT 5 #define BF_EXP_BITS_MASK 0x3f /* shortcut for bf_set_exp_bits(BF_EXT_EXP_BITS_MAX) */ #define BF_FLAG_EXT_EXP (BF_EXP_BITS_MASK << BF_EXP_BITS_SHIFT) /* contains the rounding mode and number of exponents bits */ typedef uint32_t bf_flags_t; typedef void *bf_realloc_func_t(void *opaque, void *ptr, size_t size); typedef struct { bf_t val; limb_t prec; } BFConstCache; typedef struct bf_context_t { void *realloc_opaque; bf_realloc_func_t *realloc_func; BFConstCache log2_cache; BFConstCache pi_cache; struct BFNTTState *ntt_state; } bf_context_t; static inline int bf_get_exp_bits(bf_flags_t flags) { int e; e = (flags >> BF_EXP_BITS_SHIFT) & BF_EXP_BITS_MASK; if (e == BF_EXP_BITS_MASK) return BF_EXP_BITS_MAX + 1; else return BF_EXP_BITS_MAX - e; } static inline bf_flags_t bf_set_exp_bits(int n) { return ((BF_EXP_BITS_MAX - n) & BF_EXP_BITS_MASK) << BF_EXP_BITS_SHIFT; } /* returned status */ #define BF_ST_INVALID_OP (1 << 0) #define BF_ST_DIVIDE_ZERO (1 << 1) #define BF_ST_OVERFLOW (1 << 2) #define BF_ST_UNDERFLOW (1 << 3) #define BF_ST_INEXACT (1 << 4) /* indicate that a memory allocation error occured. NaN is returned */ #define BF_ST_MEM_ERROR (1 << 5) #define BF_RADIX_MAX 36 /* maximum radix for bf_atof() and bf_ftoa() */ static inline slimb_t bf_max(slimb_t a, slimb_t b) { if (a > b) return a; else return b; } static inline slimb_t bf_min(slimb_t a, slimb_t b) { if (a < b) return a; else return b; } void bf_context_init(bf_context_t *s, bf_realloc_func_t *realloc_func, void *realloc_opaque); void bf_context_end(bf_context_t *s); /* free memory allocated for the bf cache data */ void bf_clear_cache(bf_context_t *s); static inline void *bf_realloc(bf_context_t *s, void *ptr, size_t size) { return s->realloc_func(s->realloc_opaque, ptr, size); } /* 'size' must be != 0 */ static inline void *bf_malloc(bf_context_t *s, size_t size) { return bf_realloc(s, NULL, size); } static inline void bf_free(bf_context_t *s, void *ptr) { /* must test ptr otherwise equivalent to malloc(0) */ if (ptr) bf_realloc(s, ptr, 0); } void bf_init(bf_context_t *s, bf_t *r); static inline void bf_delete(bf_t *r) { bf_context_t *s = r->ctx; /* we accept to delete a zeroed bf_t structure */ if (s && r->tab) { bf_realloc(s, r->tab, 0); } } static inline void bf_neg(bf_t *r) { r->sign ^= 1; } static inline int bf_is_finite(const bf_t *a) { return (a->expn < BF_EXP_INF); } static inline int bf_is_nan(const bf_t *a) { return (a->expn == BF_EXP_NAN); } static inline int bf_is_zero(const bf_t *a) { return (a->expn == BF_EXP_ZERO); } static inline void bf_memcpy(bf_t *r, const bf_t *a) { *r = *a; } int bf_set_ui(bf_t *r, uint64_t a); int bf_set_si(bf_t *r, int64_t a); void bf_set_nan(bf_t *r); void bf_set_zero(bf_t *r, int is_neg); void bf_set_inf(bf_t *r, int is_neg); int bf_set(bf_t *r, const bf_t *a); void bf_move(bf_t *r, bf_t *a); int bf_get_float64(const bf_t *a, double *pres, bf_rnd_t rnd_mode); int bf_set_float64(bf_t *a, double d); int bf_cmpu(const bf_t *a, const bf_t *b); int bf_cmp_full(const bf_t *a, const bf_t *b); int bf_cmp(const bf_t *a, const bf_t *b); static inline int bf_cmp_eq(const bf_t *a, const bf_t *b) { return bf_cmp(a, b) == 0; } static inline int bf_cmp_le(const bf_t *a, const bf_t *b) { return bf_cmp(a, b) <= 0; } static inline int bf_cmp_lt(const bf_t *a, const bf_t *b) { return bf_cmp(a, b) < 0; } int bf_add(bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags); int bf_sub(bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags); int bf_add_si(bf_t *r, const bf_t *a, int64_t b1, limb_t prec, bf_flags_t flags); int bf_mul(bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags); int bf_mul_ui(bf_t *r, const bf_t *a, uint64_t b1, limb_t prec, bf_flags_t flags); int bf_mul_si(bf_t *r, const bf_t *a, int64_t b1, limb_t prec, bf_flags_t flags); int bf_mul_2exp(bf_t *r, slimb_t e, limb_t prec, bf_flags_t flags); int bf_div(bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags); #define BF_DIVREM_EUCLIDIAN BF_RNDF int bf_divrem(bf_t *q, bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags, int rnd_mode); int bf_rem(bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags, int rnd_mode); int bf_remquo(slimb_t *pq, bf_t *r, const bf_t *a, const bf_t *b, limb_t prec, bf_flags_t flags, int rnd_mode); /* round to integer with infinite precision */ int bf_rint(bf_t *r, int rnd_mode); int bf_round(bf_t *r, limb_t prec, bf_flags_t flags); int bf_sqrtrem(bf_t *r, bf_t *rem1, const bf_t *a); int bf_sqrt(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); slimb_t bf_get_exp_min(const bf_t *a); int bf_logic_or(bf_t *r, const bf_t *a, const bf_t *b); int bf_logic_xor(bf_t *r, const bf_t *a, const bf_t *b); int bf_logic_and(bf_t *r, const bf_t *a, const bf_t *b); /* additional flags for bf_atof */ /* do not accept hex radix prefix (0x or 0X) if radix = 0 or radix = 16 */ #define BF_ATOF_NO_HEX (1 << 16) /* accept binary (0b or 0B) or octal (0o or 0O) radix prefix if radix = 0 */ #define BF_ATOF_BIN_OCT (1 << 17) /* Do not parse NaN or Inf */ #define BF_ATOF_NO_NAN_INF (1 << 18) /* return the exponent separately */ #define BF_ATOF_EXPONENT (1 << 19) int bf_atof(bf_t *a, const char *str, const char **pnext, int radix, limb_t prec, bf_flags_t flags); /* this version accepts prec = BF_PREC_INF and returns the radix exponent */ int bf_atof2(bf_t *r, slimb_t *pexponent, const char *str, const char **pnext, int radix, limb_t prec, bf_flags_t flags); int bf_mul_pow_radix(bf_t *r, const bf_t *T, limb_t radix, slimb_t expn, limb_t prec, bf_flags_t flags); /* Conversion of floating point number to string. Return a null terminated string or NULL if memory error. *plen contains its length if plen != NULL. The exponent letter is "e" for base 10, "p" for bases 2, 8, 16 with a binary exponent and "@" for the other bases. */ #define BF_FTOA_FORMAT_MASK (3 << 16) /* fixed format: prec significant digits rounded with (flags & BF_RND_MASK). Exponential notation is used if too many zeros are needed.*/ #define BF_FTOA_FORMAT_FIXED (0 << 16) /* fractional format: prec digits after the decimal point rounded with (flags & BF_RND_MASK) */ #define BF_FTOA_FORMAT_FRAC (1 << 16) /* free format: For binary radices with bf_ftoa() and for bfdec_ftoa(): use the minimum number of digits to represent 'a'. The precision and the rounding mode are ignored. For the non binary radices with bf_ftoa(): use as many digits as necessary so that bf_atof() return the same number when using precision 'prec', rounding to nearest and the subnormal configuration of 'flags'. The result is meaningful only if 'a' is already rounded to 'prec' bits. If the subnormal flag is set, the exponent in 'flags' must also be set to the desired exponent range. */ #define BF_FTOA_FORMAT_FREE (2 << 16) /* same as BF_FTOA_FORMAT_FREE but uses the minimum number of digits (takes more computation time). Identical to BF_FTOA_FORMAT_FREE for binary radices with bf_ftoa() and for bfdec_ftoa(). */ #define BF_FTOA_FORMAT_FREE_MIN (3 << 16) /* force exponential notation for fixed or free format */ #define BF_FTOA_FORCE_EXP (1 << 20) /* add 0x prefix for base 16, 0o prefix for base 8 or 0b prefix for base 2 if non zero value */ #define BF_FTOA_ADD_PREFIX (1 << 21) /* return "Infinity" instead of "Inf" and add a "+" for positive exponents */ #define BF_FTOA_JS_QUIRKS (1 << 22) char *bf_ftoa(size_t *plen, const bf_t *a, int radix, limb_t prec, bf_flags_t flags); /* modulo 2^n instead of saturation. NaN and infinity return 0 */ #define BF_GET_INT_MOD (1 << 0) int bf_get_int32(int *pres, const bf_t *a, int flags); int bf_get_int64(int64_t *pres, const bf_t *a, int flags); int bf_get_uint64(uint64_t *pres, const bf_t *a); /* the following functions are exported for testing only. */ void mp_print_str(const char *str, const limb_t *tab, limb_t n); void bf_print_str(const char *str, const bf_t *a); int bf_resize(bf_t *r, limb_t len); int bf_get_fft_size(int *pdpl, int *pnb_mods, limb_t len); int bf_normalize_and_round(bf_t *r, limb_t prec1, bf_flags_t flags); int bf_can_round(const bf_t *a, slimb_t prec, bf_rnd_t rnd_mode, slimb_t k); slimb_t bf_mul_log2_radix(slimb_t a1, unsigned int radix, int is_inv, int is_ceil1); int mp_mul(bf_context_t *s, limb_t *result, const limb_t *op1, limb_t op1_size, const limb_t *op2, limb_t op2_size); limb_t mp_add(limb_t *res, const limb_t *op1, const limb_t *op2, limb_t n, limb_t carry); limb_t mp_add_ui(limb_t *tab, limb_t b, size_t n); int mp_sqrtrem(bf_context_t *s, limb_t *tabs, limb_t *taba, limb_t n); int mp_recip(bf_context_t *s, limb_t *tabr, const limb_t *taba, limb_t n); limb_t bf_isqrt(limb_t a); /* transcendental functions */ int bf_const_log2(bf_t *T, limb_t prec, bf_flags_t flags); int bf_const_pi(bf_t *T, limb_t prec, bf_flags_t flags); int bf_exp(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_log(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); #define BF_POW_JS_QUIRKS (1 << 16) /* (+/-1)^(+/-Inf) = NaN, 1^NaN = NaN */ int bf_pow(bf_t *r, const bf_t *x, const bf_t *y, limb_t prec, bf_flags_t flags); int bf_cos(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_sin(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_tan(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_atan(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_atan2(bf_t *r, const bf_t *y, const bf_t *x, limb_t prec, bf_flags_t flags); int bf_asin(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); int bf_acos(bf_t *r, const bf_t *a, limb_t prec, bf_flags_t flags); /* decimal floating point */ static inline void bfdec_init(bf_context_t *s, bfdec_t *r) { bf_init(s, (bf_t *)r); } static inline void bfdec_delete(bfdec_t *r) { bf_delete((bf_t *)r); } static inline void bfdec_neg(bfdec_t *r) { r->sign ^= 1; } static inline int bfdec_is_finite(const bfdec_t *a) { return (a->expn < BF_EXP_INF); } static inline int bfdec_is_nan(const bfdec_t *a) { return (a->expn == BF_EXP_NAN); } static inline int bfdec_is_zero(const bfdec_t *a) { return (a->expn == BF_EXP_ZERO); } static inline void bfdec_memcpy(bfdec_t *r, const bfdec_t *a) { bf_memcpy((bf_t *)r, (const bf_t *)a); } int bfdec_set_ui(bfdec_t *r, uint64_t a); int bfdec_set_si(bfdec_t *r, int64_t a); static inline void bfdec_set_nan(bfdec_t *r) { bf_set_nan((bf_t *)r); } static inline void bfdec_set_zero(bfdec_t *r, int is_neg) { bf_set_zero((bf_t *)r, is_neg); } static inline void bfdec_set_inf(bfdec_t *r, int is_neg) { bf_set_inf((bf_t *)r, is_neg); } static inline int bfdec_set(bfdec_t *r, const bfdec_t *a) { return bf_set((bf_t *)r, (bf_t *)a); } static inline void bfdec_move(bfdec_t *r, bfdec_t *a) { bf_move((bf_t *)r, (bf_t *)a); } static inline int bfdec_cmpu(const bfdec_t *a, const bfdec_t *b) { return bf_cmpu((const bf_t *)a, (const bf_t *)b); } static inline int bfdec_cmp_full(const bfdec_t *a, const bfdec_t *b) { return bf_cmp_full((const bf_t *)a, (const bf_t *)b); } static inline int bfdec_cmp(const bfdec_t *a, const bfdec_t *b) { return bf_cmp((const bf_t *)a, (const bf_t *)b); } static inline int bfdec_cmp_eq(const bfdec_t *a, const bfdec_t *b) { return bfdec_cmp(a, b) == 0; } static inline int bfdec_cmp_le(const bfdec_t *a, const bfdec_t *b) { return bfdec_cmp(a, b) <= 0; } static inline int bfdec_cmp_lt(const bfdec_t *a, const bfdec_t *b) { return bfdec_cmp(a, b) < 0; } int bfdec_add(bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags); int bfdec_sub(bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags); int bfdec_add_si(bfdec_t *r, const bfdec_t *a, int64_t b1, limb_t prec, bf_flags_t flags); int bfdec_mul(bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags); int bfdec_mul_si(bfdec_t *r, const bfdec_t *a, int64_t b1, limb_t prec, bf_flags_t flags); int bfdec_div(bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags); int bfdec_divrem(bfdec_t *q, bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags, int rnd_mode); int bfdec_rem(bfdec_t *r, const bfdec_t *a, const bfdec_t *b, limb_t prec, bf_flags_t flags, int rnd_mode); int bfdec_rint(bfdec_t *r, int rnd_mode); int bfdec_sqrt(bfdec_t *r, const bfdec_t *a, limb_t prec, bf_flags_t flags); int bfdec_round(bfdec_t *r, limb_t prec, bf_flags_t flags); int bfdec_get_int32(int *pres, const bfdec_t *a); int bfdec_pow_ui(bfdec_t *r, const bfdec_t *a, limb_t b); char *bfdec_ftoa(size_t *plen, const bfdec_t *a, limb_t prec, bf_flags_t flags); int bfdec_atof(bfdec_t *r, const char *str, const char **pnext, limb_t prec, bf_flags_t flags); /* the following functions are exported for testing only. */ extern const limb_t mp_pow_dec[LIMB_DIGITS + 1]; void bfdec_print_str(const char *str, const bfdec_t *a); static inline int bfdec_resize(bfdec_t *r, limb_t len) { return bf_resize((bf_t *)r, len); } int bfdec_normalize_and_round(bfdec_t *r, limb_t prec1, bf_flags_t flags); #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* LIBBF_H */ /* * Unicode utilities * * Copyright (c) 2017-2018 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef LIBUNICODE_H #define LIBUNICODE_H #include #include #include #ifdef __cplusplus extern "C" { #endif #define LRE_CC_RES_LEN_MAX 3 typedef enum { UNICODE_NFC, UNICODE_NFD, UNICODE_NFKC, UNICODE_NFKD, } UnicodeNormalizationEnum; int lre_case_conv(uint32_t *res, uint32_t c, int conv_type); int lre_canonicalize(uint32_t c, bool is_unicode); bool lre_is_cased(uint32_t c); bool lre_is_case_ignorable(uint32_t c); /* char ranges */ typedef struct { int len; /* in points, always even */ int size; uint32_t *points; /* points sorted by increasing value */ void *mem_opaque; void *(*realloc_func)(void *opaque, void *ptr, size_t size); } CharRange; typedef enum { CR_OP_UNION, CR_OP_INTER, CR_OP_XOR, } CharRangeOpEnum; void cr_init(CharRange *cr, void *mem_opaque, void *(*realloc_func)(void *opaque, void *ptr, size_t size)); void cr_free(CharRange *cr); int cr_realloc(CharRange *cr, int size); int cr_copy(CharRange *cr, const CharRange *cr1); static inline int cr_add_point(CharRange *cr, uint32_t v) { if (cr->len >= cr->size) { if (cr_realloc(cr, cr->len + 1)) return -1; } cr->points[cr->len++] = v; return 0; } static inline int cr_add_interval(CharRange *cr, uint32_t c1, uint32_t c2) { if ((cr->len + 2) > cr->size) { if (cr_realloc(cr, cr->len + 2)) return -1; } cr->points[cr->len++] = c1; cr->points[cr->len++] = c2; return 0; } int cr_union1(CharRange *cr, const uint32_t *b_pt, int b_len); static inline int cr_union_interval(CharRange *cr, uint32_t c1, uint32_t c2) { uint32_t b_pt[2]; b_pt[0] = c1; b_pt[1] = c2 + 1; return cr_union1(cr, b_pt, 2); } int cr_op(CharRange *cr, const uint32_t *a_pt, int a_len, const uint32_t *b_pt, int b_len, int op); int cr_invert(CharRange *cr); int cr_regexp_canonicalize(CharRange *cr, bool is_unicode); bool lre_is_id_start(uint32_t c); bool lre_is_id_continue(uint32_t c); bool lre_is_white_space(uint32_t c); int unicode_normalize(uint32_t **pdst, const uint32_t *src, int src_len, UnicodeNormalizationEnum n_type, void *opaque, void *(*realloc_func)(void *opaque, void *ptr, size_t size)); /* Unicode character range functions */ int unicode_script(CharRange *cr, const char *script_name, bool is_ext); int unicode_general_category(CharRange *cr, const char *gc_name); int unicode_prop(CharRange *cr, const char *prop_name); #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* LIBUNICODE_H */ /* * Regular Expression Engine * * Copyright (c) 2017-2018 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef LIBREGEXP_H #define LIBREGEXP_H #include #include #ifdef __cplusplus extern "C" { #endif #define LRE_FLAG_GLOBAL (1 << 0) #define LRE_FLAG_IGNORECASE (1 << 1) #define LRE_FLAG_MULTILINE (1 << 2) #define LRE_FLAG_DOTALL (1 << 3) #define LRE_FLAG_UNICODE (1 << 4) #define LRE_FLAG_STICKY (1 << 5) #define LRE_FLAG_INDICES (1 << 6) /* Unused by libregexp, just recorded. */ #define LRE_FLAG_NAMED_GROUPS (1 << 7) /* named groups are present in the regexp */ #define LRE_FLAG_UNICODE_SETS (1 << 8) uint8_t *lre_compile(int *plen, char *error_msg, int error_msg_size, const char *buf, size_t buf_len, int re_flags, void *opaque); int lre_get_capture_count(const uint8_t *bc_buf); int lre_get_flags(const uint8_t *bc_buf); const char *lre_get_groupnames(const uint8_t *bc_buf); int lre_exec(uint8_t **capture, const uint8_t *bc_buf, const uint8_t *cbuf, int cindex, int clen, int cbuf_type, void *opaque); int lre_parse_escape(const uint8_t **pp, int allow_utf16); bool lre_is_space(int c); void lre_byte_swap(uint8_t *buf, size_t len, bool is_byte_swapped); /* must be provided by the user */ bool lre_check_stack_overflow(void *opaque, size_t alloca_size); void *lre_realloc(void *opaque, void *ptr, size_t size); /* JS identifier test */ extern uint32_t const lre_id_start_table_ascii[4]; extern uint32_t const lre_id_continue_table_ascii[4]; static inline int lre_js_is_ident_first(int c) { if ((uint32_t)c < 128) { return (lre_id_start_table_ascii[c >> 5] >> (c & 31)) & 1; } else { return lre_is_id_start(c); } } static inline int lre_js_is_ident_next(int c) { if ((uint32_t)c < 128) { return (lre_id_continue_table_ascii[c >> 5] >> (c & 31)) & 1; } else { /* ZWNJ and ZWJ are accepted in identifiers */ return lre_is_id_continue(c) || c == 0x200C || c == 0x200D; } } #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* LIBREGEXP_H */ /* Compressed unicode tables */ /* Automatically generated file - do not edit */ #include static const uint32_t case_conv_table1[378] = { 0x00209a30, 0x00309a00, 0x005a8173, 0x00601730, 0x006c0730, 0x006f81b3, 0x00701700, 0x007c0700, 0x007f8100, 0x00803040, 0x009801c3, 0x00988190, 0x00990640, 0x009c9040, 0x00a481b4, 0x00a52e40, 0x00bc0130, 0x00bc8640, 0x00bf8170, 0x00c00100, 0x00c08130, 0x00c10440, 0x00c30130, 0x00c38240, 0x00c48230, 0x00c58240, 0x00c70130, 0x00c78130, 0x00c80130, 0x00c88240, 0x00c98130, 0x00ca0130, 0x00ca8100, 0x00cb0130, 0x00cb8130, 0x00cc0240, 0x00cd0100, 0x00cd8101, 0x00ce0130, 0x00ce8130, 0x00cf0100, 0x00cf8130, 0x00d00640, 0x00d30130, 0x00d38240, 0x00d48130, 0x00d60240, 0x00d70130, 0x00d78240, 0x00d88230, 0x00d98440, 0x00db8130, 0x00dc0240, 0x00de0240, 0x00df8100, 0x00e20350, 0x00e38350, 0x00e50350, 0x00e69040, 0x00ee8100, 0x00ef1240, 0x00f801b4, 0x00f88350, 0x00fa0240, 0x00fb0130, 0x00fb8130, 0x00fc2840, 0x01100130, 0x01111240, 0x011d0131, 0x011d8240, 0x011e8130, 0x011f0131, 0x011f8201, 0x01208240, 0x01218130, 0x01220130, 0x01228130, 0x01230a40, 0x01280101, 0x01288101, 0x01290101, 0x01298100, 0x012a0100, 0x012b0200, 0x012c8100, 0x012d8100, 0x012e0101, 0x01300100, 0x01308101, 0x01318100, 0x01320101, 0x01328101, 0x01330101, 0x01340100, 0x01348100, 0x01350101, 0x01358101, 0x01360101, 0x01378100, 0x01388101, 0x01390100, 0x013a8100, 0x013e8101, 0x01400100, 0x01410101, 0x01418100, 0x01438101, 0x01440100, 0x01448100, 0x01450200, 0x01460100, 0x01490100, 0x014e8101, 0x014f0101, 0x01a28173, 0x01b80440, 0x01bb0240, 0x01bd8300, 0x01bf8130, 0x01c30130, 0x01c40330, 0x01c60130, 0x01c70230, 0x01c801d0, 0x01c89130, 0x01d18930, 0x01d60100, 0x01d68300, 0x01d801d3, 0x01d89100, 0x01e10173, 0x01e18900, 0x01e60100, 0x01e68200, 0x01e78130, 0x01e80173, 0x01e88173, 0x01ea8173, 0x01eb0173, 0x01eb8100, 0x01ec1840, 0x01f80173, 0x01f88173, 0x01f90100, 0x01f98100, 0x01fa01a0, 0x01fa8173, 0x01fb8240, 0x01fc8130, 0x01fd0240, 0x01fe8330, 0x02001030, 0x02082030, 0x02182000, 0x02281000, 0x02302240, 0x02453640, 0x02600130, 0x02608e40, 0x02678100, 0x02686040, 0x0298a630, 0x02b0a600, 0x02c381b5, 0x08502631, 0x08638131, 0x08668131, 0x08682b00, 0x087e8300, 0x09d05011, 0x09f80610, 0x09fc0620, 0x0e400174, 0x0e408174, 0x0e410174, 0x0e418174, 0x0e420174, 0x0e428174, 0x0e430174, 0x0e438180, 0x0e440180, 0x0e448240, 0x0e482b30, 0x0e5e8330, 0x0ebc8101, 0x0ebe8101, 0x0ec70101, 0x0f007e40, 0x0f3f1840, 0x0f4b01b5, 0x0f4b81b6, 0x0f4c01b6, 0x0f4c81b6, 0x0f4d01b7, 0x0f4d8180, 0x0f4f0130, 0x0f506040, 0x0f800800, 0x0f840830, 0x0f880600, 0x0f8c0630, 0x0f900800, 0x0f940830, 0x0f980800, 0x0f9c0830, 0x0fa00600, 0x0fa40630, 0x0fa801b0, 0x0fa88100, 0x0fa901d3, 0x0fa98100, 0x0faa01d3, 0x0faa8100, 0x0fab01d3, 0x0fab8100, 0x0fac8130, 0x0fad8130, 0x0fae8130, 0x0faf8130, 0x0fb00800, 0x0fb40830, 0x0fb80200, 0x0fb90400, 0x0fbb0201, 0x0fbc0201, 0x0fbd0201, 0x0fbe0201, 0x0fc008b7, 0x0fc40867, 0x0fc808b8, 0x0fcc0868, 0x0fd008b8, 0x0fd40868, 0x0fd80200, 0x0fd901b9, 0x0fd981b1, 0x0fda01b9, 0x0fdb01b1, 0x0fdb81d7, 0x0fdc0230, 0x0fdd0230, 0x0fde0161, 0x0fdf0173, 0x0fe101b9, 0x0fe181b2, 0x0fe201ba, 0x0fe301b2, 0x0fe381d8, 0x0fe40430, 0x0fe60162, 0x0fe80201, 0x0fe901d0, 0x0fe981d0, 0x0feb01b0, 0x0feb81d0, 0x0fec0230, 0x0fed0230, 0x0ff00201, 0x0ff101d3, 0x0ff181d3, 0x0ff201ba, 0x0ff28101, 0x0ff301b0, 0x0ff381d3, 0x0ff40231, 0x0ff50230, 0x0ff60131, 0x0ff901ba, 0x0ff981b2, 0x0ffa01bb, 0x0ffb01b2, 0x0ffb81d9, 0x0ffc0230, 0x0ffd0230, 0x0ffe0162, 0x109301a0, 0x109501a0, 0x109581a0, 0x10990131, 0x10a70101, 0x10b01031, 0x10b81001, 0x10c18240, 0x125b1a31, 0x12681a01, 0x16003031, 0x16183001, 0x16300240, 0x16310130, 0x16318130, 0x16320130, 0x16328100, 0x16330100, 0x16338640, 0x16368130, 0x16370130, 0x16378130, 0x16380130, 0x16390240, 0x163a8240, 0x163f0230, 0x16406440, 0x16758440, 0x16790240, 0x16802600, 0x16938100, 0x16968100, 0x53202e40, 0x53401c40, 0x53910e40, 0x53993e40, 0x53bc8440, 0x53be8130, 0x53bf0a40, 0x53c58240, 0x53c68130, 0x53c80440, 0x53ca0101, 0x53cb1440, 0x53d50130, 0x53d58130, 0x53d60130, 0x53d68130, 0x53d70130, 0x53d80130, 0x53d88130, 0x53d90130, 0x53d98131, 0x53da1040, 0x53e20131, 0x53e28130, 0x53e30130, 0x53e38440, 0x53e58130, 0x53e60240, 0x53e80240, 0x53eb0640, 0x53ee0130, 0x53fa8240, 0x55a98101, 0x55b85020, 0x7d8001b2, 0x7d8081b2, 0x7d8101b2, 0x7d8181da, 0x7d8201da, 0x7d8281b3, 0x7d8301b3, 0x7d8981bb, 0x7d8a01bb, 0x7d8a81bb, 0x7d8b01bc, 0x7d8b81bb, 0x7f909a31, 0x7fa09a01, 0x82002831, 0x82142801, 0x82582431, 0x826c2401, 0x82b80b31, 0x82be0f31, 0x82c60731, 0x82ca0231, 0x82cb8b01, 0x82d18f01, 0x82d98701, 0x82dd8201, 0x86403331, 0x86603301, 0x86a81631, 0x86b81601, 0x8c502031, 0x8c602001, 0xb7202031, 0xb7302001, 0xf4802231, 0xf4912201, }; static const uint8_t case_conv_table2[378] = { 0x01, 0x00, 0x9c, 0x06, 0x07, 0x4d, 0x03, 0x04, 0x10, 0x00, 0x8f, 0x0b, 0x00, 0x00, 0x11, 0x00, 0x08, 0x00, 0x53, 0x4b, 0x52, 0x00, 0x53, 0x00, 0x54, 0x00, 0x3b, 0x55, 0x56, 0x00, 0x58, 0x5a, 0x40, 0x5f, 0x5e, 0x00, 0x47, 0x52, 0x63, 0x65, 0x43, 0x66, 0x00, 0x68, 0x00, 0x6a, 0x00, 0x6c, 0x00, 0x6e, 0x00, 0x70, 0x00, 0x00, 0x41, 0x00, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x93, 0x00, 0x00, 0x20, 0x36, 0x00, 0x28, 0x00, 0x24, 0x00, 0x24, 0x25, 0x2d, 0x00, 0x13, 0x6d, 0x6f, 0x00, 0x29, 0x27, 0x2a, 0x14, 0x16, 0x18, 0x1b, 0x1c, 0x41, 0x1e, 0x42, 0x1f, 0x4e, 0x3c, 0x40, 0x22, 0x21, 0x44, 0x21, 0x43, 0x26, 0x28, 0x27, 0x29, 0x23, 0x2b, 0x4b, 0x2d, 0x46, 0x2f, 0x4c, 0x31, 0x4d, 0x33, 0x47, 0x45, 0x99, 0x00, 0x00, 0x97, 0x91, 0x7f, 0x80, 0x85, 0x86, 0x12, 0x82, 0x84, 0x78, 0x79, 0x12, 0x7d, 0xa3, 0x7e, 0x7a, 0x7b, 0x8c, 0x92, 0x98, 0xa6, 0xa0, 0x87, 0x00, 0x9a, 0xa1, 0x95, 0x77, 0x33, 0x95, 0x00, 0x90, 0x00, 0x76, 0x9b, 0x9a, 0x99, 0x98, 0x00, 0x00, 0xa0, 0x00, 0x9e, 0x00, 0xa3, 0xa2, 0x15, 0x31, 0x32, 0x33, 0xb7, 0xb8, 0x55, 0xac, 0xab, 0x12, 0x14, 0x1e, 0x21, 0x22, 0x22, 0x2a, 0x34, 0x35, 0x00, 0xa8, 0xa9, 0x39, 0x22, 0x4c, 0x00, 0x00, 0x97, 0x01, 0x5a, 0xda, 0x1d, 0x36, 0x05, 0x00, 0xc7, 0xc6, 0xc9, 0xc8, 0xcb, 0xca, 0xcd, 0xcc, 0xcf, 0xce, 0xc4, 0xd8, 0x45, 0xd9, 0x42, 0xda, 0x46, 0xdb, 0xd1, 0xd3, 0xd5, 0xd7, 0xdd, 0xdc, 0xf1, 0xf9, 0x01, 0x11, 0x0a, 0x12, 0x80, 0x9f, 0x00, 0x21, 0x80, 0xa3, 0xf0, 0x00, 0xc0, 0x40, 0xc6, 0x60, 0xea, 0xde, 0xe6, 0x99, 0xc0, 0x00, 0x00, 0x06, 0x60, 0xdf, 0x29, 0x00, 0x15, 0x12, 0x06, 0x16, 0xfb, 0xe0, 0x09, 0x15, 0x12, 0x84, 0x0b, 0xc6, 0x16, 0x02, 0xe2, 0x06, 0xc0, 0x40, 0x00, 0x46, 0x60, 0xe1, 0xe3, 0x6d, 0x37, 0x38, 0x39, 0x18, 0x17, 0x1a, 0x19, 0x00, 0x1d, 0x1c, 0x1f, 0x1e, 0x00, 0x61, 0xba, 0x67, 0x45, 0x48, 0x00, 0x50, 0x64, 0x4f, 0x51, 0x00, 0x00, 0x49, 0x00, 0x00, 0x00, 0xa5, 0xa6, 0xa7, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb9, 0x00, 0x00, 0x5c, 0x00, 0x4a, 0x00, 0x5d, 0x57, 0x59, 0x62, 0x60, 0x72, 0x6b, 0x71, 0x54, 0x00, 0x3e, 0x69, 0xbb, 0x00, 0x5b, 0x00, 0x00, 0x00, 0x25, 0x00, 0x48, 0xaa, 0x8a, 0x8b, 0x8c, 0xab, 0xac, 0x58, 0x58, 0xaf, 0x94, 0xb0, 0x6f, 0xb2, 0x63, 0x62, 0x65, 0x64, 0x67, 0x66, 0x6c, 0x6d, 0x6e, 0x6f, 0x68, 0x69, 0x6a, 0x6b, 0x71, 0x70, 0x73, 0x72, 0x75, 0x74, 0x77, 0x76, 0x79, 0x78, }; static const uint16_t case_conv_ext[58] = { 0x0399, 0x0308, 0x0301, 0x03a5, 0x0313, 0x0300, 0x0342, 0x0391, 0x0397, 0x03a9, 0x0046, 0x0049, 0x004c, 0x0053, 0x0069, 0x0307, 0x02bc, 0x004e, 0x004a, 0x030c, 0x0535, 0x0552, 0x0048, 0x0331, 0x0054, 0x0057, 0x030a, 0x0059, 0x0041, 0x02be, 0x1f08, 0x1f80, 0x1f28, 0x1f90, 0x1f68, 0x1fa0, 0x1fba, 0x0386, 0x1fb3, 0x1fca, 0x0389, 0x1fc3, 0x03a1, 0x1ffa, 0x038f, 0x1ff3, 0x0544, 0x0546, 0x053b, 0x054e, 0x053d, 0x03b8, 0x0462, 0xa64a, 0x1e60, 0x03c9, 0x006b, 0x00e5, }; static const uint8_t unicode_prop_Cased1_table[193] = { 0x40, 0xa9, 0x80, 0x8e, 0x80, 0xfc, 0x80, 0xd3, 0x80, 0x9b, 0x81, 0x8d, 0x02, 0x80, 0xe1, 0x80, 0x91, 0x85, 0x9a, 0x01, 0x00, 0x01, 0x11, 0x03, 0x04, 0x08, 0x01, 0x08, 0x30, 0x08, 0x01, 0x15, 0x20, 0x00, 0x39, 0x99, 0x31, 0x9d, 0x84, 0x40, 0x94, 0x80, 0xd6, 0x82, 0xa6, 0x80, 0x41, 0x62, 0x80, 0xa6, 0x80, 0x4b, 0x72, 0x80, 0x4c, 0x02, 0xf8, 0x02, 0x80, 0x8f, 0x80, 0xb0, 0x40, 0xdb, 0x08, 0x80, 0x41, 0xd0, 0x80, 0x8c, 0x80, 0x8f, 0x8c, 0xe4, 0x03, 0x01, 0x89, 0x00, 0x14, 0x28, 0x10, 0x11, 0x02, 0x01, 0x18, 0x0b, 0x24, 0x4b, 0x26, 0x01, 0x01, 0x86, 0xe5, 0x80, 0x60, 0x79, 0xb6, 0x81, 0x40, 0x91, 0x81, 0xbd, 0x88, 0x94, 0x05, 0x80, 0x98, 0x80, 0xa2, 0x00, 0x80, 0x9b, 0x12, 0x82, 0x43, 0x34, 0xa2, 0x06, 0x80, 0x8d, 0x60, 0x5c, 0x15, 0x01, 0x10, 0xa9, 0x80, 0x88, 0x60, 0xcc, 0x44, 0xd4, 0x80, 0xc6, 0x01, 0x08, 0x09, 0x0b, 0x80, 0x8b, 0x00, 0x06, 0x80, 0xc0, 0x03, 0x0f, 0x06, 0x80, 0x9b, 0x03, 0x04, 0x00, 0x16, 0x80, 0x41, 0x53, 0x81, 0x98, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x07, 0x47, 0x33, 0x89, 0x80, 0x93, 0x2d, 0x41, 0x04, 0xbd, 0x50, 0xc1, 0x99, 0x85, 0x99, 0x85, 0x99, }; static const uint8_t unicode_prop_Cased1_index[18] = { 0xb9, 0x02, 0x80, 0xa0, 0x1e, 0x40, 0x9e, 0xa6, 0x40, 0xbb, 0x07, 0x01, 0xdb, 0xd6, 0x01, 0x8a, 0xf1, 0x01, }; static const uint8_t unicode_prop_Case_Ignorable_table[764] = { 0xa6, 0x05, 0x80, 0x8a, 0x80, 0xa2, 0x00, 0x80, 0xc6, 0x03, 0x00, 0x03, 0x01, 0x81, 0x41, 0xf6, 0x40, 0xbf, 0x19, 0x18, 0x88, 0x08, 0x80, 0x40, 0xfa, 0x86, 0x40, 0xce, 0x04, 0x80, 0xb0, 0xac, 0x00, 0x01, 0x01, 0x00, 0xab, 0x80, 0x8a, 0x85, 0x89, 0x8a, 0x00, 0xa2, 0x80, 0x89, 0x94, 0x8f, 0x80, 0xe4, 0x38, 0x89, 0x03, 0xa0, 0x00, 0x80, 0x9d, 0x9a, 0xda, 0x8a, 0xb9, 0x8a, 0x18, 0x08, 0x97, 0x97, 0xaa, 0x82, 0xab, 0x06, 0x0c, 0x88, 0xa8, 0xb9, 0xb6, 0x00, 0x03, 0x3b, 0x02, 0x86, 0x89, 0x81, 0x8c, 0x80, 0x8e, 0x80, 0xb9, 0x03, 0x1f, 0x80, 0x93, 0x81, 0x99, 0x01, 0x81, 0xb8, 0x03, 0x0b, 0x09, 0x12, 0x80, 0x9d, 0x0a, 0x80, 0x8a, 0x81, 0xb8, 0x03, 0x20, 0x0b, 0x80, 0x93, 0x81, 0x95, 0x28, 0x80, 0xb9, 0x01, 0x00, 0x1f, 0x06, 0x81, 0x8a, 0x81, 0x9d, 0x80, 0xbc, 0x80, 0x8b, 0x80, 0xb1, 0x02, 0x80, 0xb6, 0x00, 0x14, 0x10, 0x1e, 0x81, 0x8a, 0x81, 0x9c, 0x80, 0xb9, 0x01, 0x05, 0x04, 0x81, 0x93, 0x81, 0x9b, 0x81, 0xb8, 0x0b, 0x1f, 0x80, 0x93, 0x81, 0x9c, 0x80, 0xc7, 0x06, 0x10, 0x80, 0xd9, 0x01, 0x86, 0x8a, 0x88, 0xe1, 0x01, 0x88, 0x88, 0x00, 0x86, 0xc8, 0x81, 0x9a, 0x00, 0x00, 0x80, 0xb6, 0x8d, 0x04, 0x01, 0x84, 0x8a, 0x80, 0xa3, 0x88, 0x80, 0xe5, 0x18, 0x28, 0x09, 0x81, 0x98, 0x0b, 0x82, 0x8f, 0x83, 0x8c, 0x01, 0x0d, 0x80, 0x8e, 0x80, 0xdd, 0x80, 0x42, 0x5f, 0x82, 0x43, 0xb1, 0x82, 0x9c, 0x81, 0x9d, 0x81, 0x9d, 0x81, 0xbf, 0x08, 0x37, 0x01, 0x8a, 0x10, 0x20, 0xac, 0x84, 0xb2, 0x80, 0xc0, 0x81, 0xa1, 0x80, 0xf5, 0x13, 0x81, 0x88, 0x05, 0x82, 0x40, 0xda, 0x09, 0x80, 0xb9, 0x00, 0x30, 0x00, 0x01, 0x3d, 0x89, 0x08, 0xa6, 0x07, 0x9e, 0xb0, 0x83, 0xaf, 0x00, 0x20, 0x04, 0x80, 0xa7, 0x88, 0x8b, 0x81, 0x9f, 0x19, 0x08, 0x82, 0xb7, 0x00, 0x0a, 0x00, 0x82, 0xb9, 0x39, 0x81, 0xbf, 0x85, 0xd1, 0x10, 0x8c, 0x06, 0x18, 0x28, 0x11, 0xb1, 0xbe, 0x8c, 0x80, 0xa1, 0xe4, 0x41, 0xbc, 0x00, 0x82, 0x8a, 0x82, 0x8c, 0x82, 0x8c, 0x82, 0x8c, 0x81, 0x8b, 0x27, 0x81, 0x89, 0x01, 0x01, 0x84, 0xb0, 0x20, 0x89, 0x00, 0x8c, 0x80, 0x8f, 0x8c, 0xb2, 0xa0, 0x4b, 0x8a, 0x81, 0xf0, 0x82, 0xfc, 0x80, 0x8e, 0x80, 0xdf, 0x9f, 0xae, 0x80, 0x41, 0xd4, 0x80, 0xa3, 0x1a, 0x24, 0x80, 0xdc, 0x85, 0xdc, 0x82, 0x60, 0x6f, 0x15, 0x80, 0x44, 0xe1, 0x85, 0x41, 0x0d, 0x80, 0xe1, 0x18, 0x89, 0x00, 0x9b, 0x83, 0xcf, 0x81, 0x8d, 0xa1, 0xcd, 0x80, 0x96, 0x82, 0xe6, 0x12, 0x0f, 0x02, 0x03, 0x80, 0x98, 0x0c, 0x80, 0x40, 0x96, 0x81, 0x99, 0x91, 0x8c, 0x80, 0xa5, 0x87, 0x98, 0x8a, 0xad, 0x82, 0xaf, 0x01, 0x19, 0x81, 0x90, 0x80, 0x94, 0x81, 0xc1, 0x29, 0x09, 0x81, 0x8b, 0x07, 0x80, 0xa2, 0x80, 0x8a, 0x80, 0xb2, 0x00, 0x11, 0x0c, 0x08, 0x80, 0x9a, 0x80, 0x8d, 0x0c, 0x08, 0x80, 0xe3, 0x84, 0x88, 0x82, 0xf8, 0x01, 0x03, 0x80, 0x60, 0x4f, 0x2f, 0x80, 0x40, 0x92, 0x90, 0x42, 0x3c, 0x8f, 0x10, 0x8b, 0x8f, 0xa1, 0x01, 0x80, 0x40, 0xa8, 0x06, 0x05, 0x80, 0x8a, 0x80, 0xa2, 0x00, 0x80, 0xae, 0x80, 0xac, 0x81, 0xc2, 0x80, 0x94, 0x82, 0x42, 0x00, 0x80, 0x40, 0xe1, 0x80, 0x40, 0x94, 0x84, 0x44, 0x04, 0x28, 0xa9, 0x80, 0x88, 0x42, 0x45, 0x10, 0x0c, 0x83, 0xa7, 0x13, 0x80, 0x40, 0xa4, 0x81, 0x42, 0x3c, 0x83, 0xa5, 0x80, 0x99, 0x20, 0x80, 0x41, 0x3a, 0x81, 0xce, 0x83, 0xc5, 0x8a, 0xb0, 0x83, 0xfa, 0x80, 0xb5, 0x8e, 0xa8, 0x01, 0x81, 0x89, 0x82, 0xb0, 0x19, 0x09, 0x03, 0x80, 0x89, 0x80, 0xb1, 0x82, 0xa3, 0x20, 0x87, 0xbd, 0x80, 0x8b, 0x81, 0xb3, 0x88, 0x89, 0x19, 0x80, 0xde, 0x11, 0x00, 0x0d, 0x01, 0x80, 0x40, 0x9c, 0x02, 0x87, 0x94, 0x81, 0xb8, 0x0a, 0x80, 0xa4, 0x32, 0x84, 0xc5, 0x85, 0x8c, 0x00, 0x00, 0x80, 0x8d, 0x81, 0xd4, 0x39, 0x10, 0x80, 0x96, 0x80, 0xd3, 0x28, 0x03, 0x08, 0x81, 0x40, 0xed, 0x1d, 0x08, 0x81, 0x9a, 0x81, 0xd4, 0x39, 0x00, 0x81, 0xe9, 0x00, 0x01, 0x28, 0x80, 0xe4, 0x00, 0x01, 0x18, 0x84, 0x41, 0x02, 0x88, 0x01, 0x40, 0xff, 0x08, 0x03, 0x80, 0x40, 0x8f, 0x19, 0x0b, 0x80, 0x9f, 0x89, 0xa7, 0x29, 0x1f, 0x80, 0x88, 0x29, 0x82, 0xad, 0x8c, 0x01, 0x41, 0x95, 0x30, 0x28, 0x80, 0xd1, 0x95, 0x0e, 0x01, 0x01, 0xf9, 0x2a, 0x00, 0x08, 0x30, 0x80, 0xc7, 0x0a, 0x00, 0x80, 0x41, 0x5a, 0x81, 0x8a, 0x81, 0xb3, 0x24, 0x00, 0x80, 0x96, 0x80, 0x54, 0xd4, 0x90, 0x85, 0x8e, 0x60, 0x2c, 0xc7, 0x8b, 0x12, 0x49, 0xbf, 0x84, 0xba, 0x86, 0x88, 0x83, 0x41, 0xfb, 0x82, 0xa7, 0x81, 0x41, 0xe1, 0x80, 0xbe, 0x90, 0xbf, 0x08, 0x81, 0x60, 0x40, 0x0a, 0x18, 0x30, 0x81, 0x4c, 0x9d, 0x08, 0x83, 0x52, 0x5b, 0xad, 0x81, 0x96, 0x42, 0x1f, 0x82, 0x88, 0x8f, 0x0e, 0x9d, 0x83, 0x40, 0x93, 0x82, 0x47, 0xba, 0xb6, 0x83, 0xb1, 0x38, 0x8d, 0x80, 0x95, 0x20, 0x8e, 0x45, 0x4f, 0x30, 0x90, 0x0e, 0x01, 0x04, 0x84, 0xbd, 0xa0, 0x80, 0x40, 0x9f, 0x8d, 0x41, 0x6f, 0x80, 0xbc, 0x83, 0x41, 0xfa, 0x84, 0x40, 0xfd, 0x81, 0x42, 0xdf, 0x86, 0xec, 0x87, 0x4a, 0xae, 0x84, 0x6c, 0x0c, 0x00, 0x80, 0x9d, 0xdf, 0xff, 0x40, 0xef, }; static const uint8_t unicode_prop_Case_Ignorable_index[72] = { 0xbe, 0x05, 0x00, 0xfe, 0x07, 0x00, 0x52, 0x0a, 0xa0, 0xc1, 0x0b, 0x00, 0x82, 0x0d, 0x00, 0x3f, 0x10, 0x80, 0xd4, 0x17, 0x40, 0xcf, 0x1a, 0x20, 0xf5, 0x1c, 0x00, 0x80, 0x20, 0x00, 0x16, 0xa0, 0x00, 0xc6, 0xa8, 0x00, 0xc2, 0xaa, 0x60, 0x56, 0xfe, 0x20, 0xb1, 0x07, 0x01, 0x02, 0x10, 0x01, 0x42, 0x12, 0x41, 0xc4, 0x14, 0x21, 0xe1, 0x19, 0x81, 0x48, 0x1d, 0x01, 0x44, 0x6b, 0x01, 0x83, 0xd1, 0x21, 0x3e, 0xe1, 0x01, 0xf0, 0x01, 0x0e, }; static const uint8_t unicode_prop_ID_Start_table[1133] = { 0xc0, 0x99, 0x85, 0x99, 0xae, 0x80, 0x89, 0x03, 0x04, 0x96, 0x80, 0x9e, 0x80, 0x41, 0xc9, 0x83, 0x8b, 0x8d, 0x26, 0x00, 0x80, 0x40, 0x80, 0x20, 0x09, 0x18, 0x05, 0x00, 0x10, 0x00, 0x93, 0x80, 0xd2, 0x80, 0x40, 0x8a, 0x87, 0x40, 0xa5, 0x80, 0xa5, 0x08, 0x85, 0xa8, 0xc6, 0x9a, 0x1b, 0xac, 0xaa, 0xa2, 0x08, 0xe2, 0x00, 0x8e, 0x0e, 0x81, 0x89, 0x11, 0x80, 0x8f, 0x00, 0x9d, 0x9c, 0xd8, 0x8a, 0x80, 0x97, 0xa0, 0x88, 0x0b, 0x04, 0x95, 0x18, 0x88, 0x02, 0x80, 0x96, 0x98, 0x86, 0x8a, 0x84, 0x97, 0x05, 0x90, 0xa9, 0xb9, 0xb5, 0x10, 0x91, 0x06, 0x89, 0x8e, 0x8f, 0x1f, 0x09, 0x81, 0x95, 0x06, 0x00, 0x13, 0x10, 0x8f, 0x80, 0x8c, 0x08, 0x82, 0x8d, 0x81, 0x89, 0x07, 0x2b, 0x09, 0x95, 0x06, 0x01, 0x01, 0x01, 0x9e, 0x18, 0x80, 0x92, 0x82, 0x8f, 0x88, 0x02, 0x80, 0x95, 0x06, 0x01, 0x04, 0x10, 0x91, 0x80, 0x8e, 0x81, 0x96, 0x80, 0x8a, 0x39, 0x09, 0x95, 0x06, 0x01, 0x04, 0x10, 0x9d, 0x08, 0x82, 0x8e, 0x80, 0x90, 0x00, 0x2a, 0x10, 0x1a, 0x08, 0x00, 0x0a, 0x0a, 0x12, 0x8b, 0x95, 0x80, 0xb3, 0x38, 0x10, 0x96, 0x80, 0x8f, 0x10, 0x99, 0x11, 0x01, 0x81, 0x9d, 0x03, 0x38, 0x10, 0x96, 0x80, 0x89, 0x04, 0x10, 0x9e, 0x08, 0x81, 0x8e, 0x81, 0x90, 0x88, 0x02, 0x80, 0xa8, 0x08, 0x8f, 0x04, 0x17, 0x82, 0x97, 0x2c, 0x91, 0x82, 0x97, 0x80, 0x88, 0x00, 0x0e, 0xb9, 0xaf, 0x01, 0x8b, 0x86, 0xb9, 0x08, 0x00, 0x20, 0x97, 0x00, 0x80, 0x89, 0x01, 0x88, 0x01, 0x20, 0x80, 0x94, 0x83, 0x9f, 0x80, 0xbe, 0x38, 0xa3, 0x9a, 0x84, 0xf2, 0xaa, 0x93, 0x80, 0x8f, 0x2b, 0x1a, 0x02, 0x0e, 0x13, 0x8c, 0x8b, 0x80, 0x90, 0xa5, 0x00, 0x20, 0x81, 0xaa, 0x80, 0x41, 0x4c, 0x03, 0x0e, 0x00, 0x03, 0x81, 0xa8, 0x03, 0x81, 0xa0, 0x03, 0x0e, 0x00, 0x03, 0x81, 0x8e, 0x80, 0xb8, 0x03, 0x81, 0xc2, 0xa4, 0x8f, 0x8f, 0xd5, 0x0d, 0x82, 0x42, 0x6b, 0x81, 0x90, 0x80, 0x99, 0x84, 0xca, 0x82, 0x8a, 0x86, 0x91, 0x8c, 0x92, 0x8d, 0x91, 0x8d, 0x8c, 0x02, 0x8e, 0xb3, 0xa2, 0x03, 0x80, 0xc2, 0xd8, 0x86, 0xa8, 0x00, 0x84, 0xc5, 0x89, 0x9e, 0xb0, 0x9d, 0x0c, 0x8a, 0xab, 0x83, 0x99, 0xb5, 0x96, 0x88, 0xb4, 0xd1, 0x80, 0xdc, 0xae, 0x90, 0x87, 0xb5, 0x9d, 0x8c, 0x81, 0x89, 0xab, 0x99, 0xa3, 0xa8, 0x82, 0x89, 0xa3, 0x81, 0x8a, 0x84, 0xaa, 0x0a, 0xa8, 0x18, 0x28, 0x0a, 0x04, 0x40, 0xbf, 0xbf, 0x41, 0x15, 0x0d, 0x81, 0xa5, 0x0d, 0x0f, 0x00, 0x00, 0x00, 0x80, 0x9e, 0x81, 0xb4, 0x06, 0x00, 0x12, 0x06, 0x13, 0x0d, 0x83, 0x8c, 0x22, 0x06, 0xf3, 0x80, 0x8c, 0x80, 0x8f, 0x8c, 0xe4, 0x03, 0x01, 0x89, 0x00, 0x0d, 0x28, 0x00, 0x00, 0x80, 0x8f, 0x0b, 0x24, 0x18, 0x90, 0xa8, 0x4a, 0x76, 0x40, 0xe4, 0x2b, 0x11, 0x8b, 0xa5, 0x00, 0x20, 0x81, 0xb7, 0x30, 0x8f, 0x96, 0x88, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x86, 0x42, 0x25, 0x82, 0x98, 0x88, 0x34, 0x0c, 0x83, 0xd5, 0x1c, 0x80, 0xd9, 0x03, 0x84, 0xaa, 0x80, 0xdd, 0x90, 0x9f, 0xaf, 0x8f, 0x41, 0xff, 0x59, 0xbf, 0xbf, 0x60, 0x56, 0x8c, 0xc2, 0xad, 0x81, 0x41, 0x0c, 0x82, 0x8f, 0x89, 0x81, 0x93, 0xae, 0x8f, 0x9e, 0x81, 0xcf, 0xa6, 0x88, 0x81, 0xe6, 0x81, 0xc2, 0x09, 0x00, 0x07, 0x94, 0x8f, 0x02, 0x03, 0x80, 0x96, 0x9c, 0xb3, 0x8d, 0xb1, 0xbd, 0x2a, 0x00, 0x81, 0x8a, 0x9b, 0x89, 0x96, 0x98, 0x9c, 0x86, 0xae, 0x9b, 0x80, 0x8f, 0x20, 0x89, 0x89, 0x20, 0xa8, 0x96, 0x10, 0x87, 0x93, 0x96, 0x10, 0x82, 0xb1, 0x00, 0x11, 0x0c, 0x08, 0x00, 0x97, 0x11, 0x8a, 0x32, 0x8b, 0x29, 0x29, 0x85, 0x88, 0x30, 0x30, 0xaa, 0x80, 0x8d, 0x85, 0xf2, 0x9c, 0x60, 0x2b, 0xa3, 0x8b, 0x96, 0x83, 0xb0, 0x60, 0x21, 0x03, 0x41, 0x6d, 0x81, 0xe9, 0xa5, 0x86, 0x8b, 0x24, 0x00, 0x89, 0x80, 0x8c, 0x04, 0x00, 0x01, 0x01, 0x80, 0xeb, 0xa0, 0x41, 0x6a, 0x91, 0xbf, 0x81, 0xb5, 0xa7, 0x8b, 0xf3, 0x20, 0x40, 0x86, 0xa3, 0x99, 0x85, 0x99, 0x8a, 0xd8, 0x15, 0x0d, 0x0d, 0x0a, 0xa2, 0x8b, 0x80, 0x99, 0x80, 0x92, 0x01, 0x80, 0x8e, 0x81, 0x8d, 0xa1, 0xfa, 0xc4, 0xb4, 0x41, 0x0a, 0x9c, 0x82, 0xb0, 0xae, 0x9f, 0x8c, 0x9d, 0x84, 0xa5, 0x89, 0x9d, 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0x08, 0x80, 0xa5, 0x00, 0x98, 0x00, 0x80, 0xab, 0xb4, 0x91, 0x83, 0x93, 0x82, 0x9d, 0xaf, 0x93, 0x08, 0x80, 0x40, 0xb7, 0xae, 0xa8, 0x83, 0xa3, 0xaf, 0x93, 0x80, 0xba, 0xaa, 0x8c, 0x80, 0xc6, 0x9a, 0xa4, 0x86, 0x40, 0xb8, 0xab, 0xf3, 0xbf, 0x9e, 0x39, 0x01, 0x38, 0x08, 0x97, 0x8e, 0x00, 0x80, 0xdd, 0x39, 0xa6, 0x8f, 0x00, 0x80, 0x9b, 0x80, 0x89, 0xa7, 0x30, 0x94, 0x80, 0x8a, 0xad, 0x92, 0x80, 0x91, 0xc8, 0x40, 0xc6, 0xa0, 0x9e, 0x88, 0x80, 0xa4, 0x90, 0x80, 0xb0, 0x9d, 0xef, 0x30, 0x08, 0xa5, 0x94, 0x80, 0x98, 0x28, 0x08, 0x9f, 0x8d, 0x80, 0x41, 0x46, 0x92, 0x8e, 0x00, 0x8c, 0x80, 0xa1, 0xfb, 0x80, 0xce, 0x43, 0x99, 0xe5, 0xee, 0x90, 0x40, 0xc3, 0x4a, 0x4b, 0xe0, 0x8e, 0x44, 0x2f, 0x90, 0x85, 0x98, 0x4f, 0x9a, 0x84, 0x42, 0x46, 0x5a, 0xb8, 0x9d, 0x46, 0xe1, 0x42, 0x38, 0x86, 0x9e, 0x90, 0xce, 0x90, 0x9d, 0x91, 0xaf, 0x8f, 0x83, 0x9e, 0x94, 0x84, 0x92, 0x41, 0xaf, 0xac, 0x40, 0xd2, 0xbf, 0xff, 0xca, 0x20, 0xc1, 0x8c, 0xbf, 0x08, 0x80, 0x9b, 0x57, 0xf7, 0x87, 0x44, 0xd5, 0xa8, 0x89, 0x60, 0x22, 0xe6, 0x18, 0x30, 0x08, 0x41, 0x22, 0x8e, 0x80, 0x9c, 0x11, 0x80, 0x8d, 0x1f, 0x41, 0x8b, 0x49, 0x03, 0xea, 0x84, 0x8c, 0x82, 0x88, 0x86, 0x89, 0x57, 0x65, 0xd4, 0x80, 0xc6, 0x01, 0x08, 0x09, 0x0b, 0x80, 0x8b, 0x00, 0x06, 0x80, 0xc0, 0x03, 0x0f, 0x06, 0x80, 0x9b, 0x03, 0x04, 0x00, 0x16, 0x80, 0x41, 0x53, 0x81, 0x98, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x07, 0x47, 0x33, 0x9e, 0x2d, 0x41, 0x04, 0xbd, 0x40, 0x91, 0xac, 0x89, 0x86, 0x8f, 0x80, 0x41, 0x40, 0x9d, 0x91, 0xab, 0x41, 0xe3, 0x9b, 0x40, 0xe3, 0x9d, 0x08, 0x41, 0xee, 0x30, 0x18, 0x08, 0x8e, 0x80, 0x40, 0xc4, 0xba, 0xc3, 0x30, 0x44, 0xb3, 0x18, 0x9a, 0x01, 0x00, 0x08, 0x80, 0x89, 0x03, 0x00, 0x00, 0x28, 0x18, 0x00, 0x00, 0x02, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x0b, 0x06, 0x03, 0x03, 0x00, 0x80, 0x89, 0x80, 0x90, 0x22, 0x04, 0x80, 0x90, 0x51, 0x43, 0x60, 0xa6, 0xdf, 0x9f, 0x50, 0x39, 0x85, 0x40, 0xdd, 0x81, 0x56, 0x81, 0x8d, 0x5d, 0x30, 0x8e, 0x42, 0x6d, 0x49, 0xa1, 0x42, 0x1d, 0x45, 0xe1, 0x53, 0x4a, 0x84, 0x50, 0x5f, }; static const uint8_t unicode_prop_ID_Start_index[108] = { 0xf6, 0x03, 0x20, 0xa6, 0x07, 0x00, 0xa9, 0x09, 0x20, 0xb1, 0x0a, 0x00, 0xba, 0x0b, 0x20, 0x3b, 0x0d, 0x20, 0xc7, 0x0e, 0x20, 0x49, 0x12, 0x00, 0x9b, 0x16, 0x00, 0xac, 0x19, 0x00, 0xc0, 0x1d, 0x80, 0x80, 0x20, 0x20, 0x70, 0x2d, 0x00, 0x00, 0x32, 0x00, 0xdd, 0xa7, 0x00, 0x4c, 0xaa, 0x20, 0xc7, 0xd7, 0x20, 0xfc, 0xfd, 0x20, 0x9d, 0x02, 0x21, 0x96, 0x05, 0x01, 0x9f, 0x08, 0x01, 0x49, 0x0c, 0x21, 0x76, 0x10, 0x21, 0xa9, 0x12, 0x01, 0xb0, 0x14, 0x01, 0x42, 0x19, 0x41, 0x90, 0x1c, 0x01, 0xf1, 0x2f, 0x21, 0x90, 0x6b, 0x21, 0x33, 0xb1, 0x21, 0x06, 0xd5, 0x01, 0xc3, 0xd7, 0x01, 0xff, 0xe7, 0x21, 0x63, 0xee, 0x01, 0x5e, 0xee, 0x42, 0xb0, 0x23, 0x03, }; static const uint8_t unicode_prop_ID_Continue1_table[695] = { 0xaf, 0x89, 0xa4, 0x80, 0xd6, 0x80, 0x42, 0x47, 0xef, 0x96, 0x80, 0x40, 0xfa, 0x84, 0x41, 0x08, 0xac, 0x00, 0x01, 0x01, 0x00, 0xc7, 0x8a, 0xaf, 0x9e, 0x28, 0xe4, 0x31, 0x29, 0x08, 0x19, 0x89, 0x96, 0x80, 0x9d, 0x9a, 0xda, 0x8a, 0x8e, 0x89, 0xa0, 0x88, 0x88, 0x80, 0x97, 0x18, 0x88, 0x02, 0x04, 0xaa, 0x82, 0xba, 0x88, 0xa9, 0x97, 0x80, 0xa0, 0xb5, 0x10, 0x91, 0x06, 0x89, 0x09, 0x89, 0x90, 0x82, 0xb7, 0x00, 0x31, 0x09, 0x82, 0x88, 0x80, 0x89, 0x09, 0x89, 0x8d, 0x01, 0x82, 0xb7, 0x00, 0x23, 0x09, 0x12, 0x80, 0x93, 0x8b, 0x10, 0x8a, 0x82, 0xb7, 0x00, 0x38, 0x10, 0x82, 0x93, 0x09, 0x89, 0x89, 0x28, 0x82, 0xb7, 0x00, 0x31, 0x09, 0x16, 0x82, 0x89, 0x09, 0x89, 0x91, 0x80, 0xba, 0x22, 0x10, 0x83, 0x88, 0x80, 0x8d, 0x89, 0x8f, 0x84, 0xb6, 0x00, 0x30, 0x10, 0x1e, 0x81, 0x8a, 0x09, 0x89, 0x90, 0x82, 0xb7, 0x00, 0x30, 0x10, 0x1e, 0x81, 0x8a, 0x09, 0x89, 0x10, 0x8b, 0x83, 0xb6, 0x08, 0x30, 0x10, 0x83, 0x88, 0x80, 0x89, 0x09, 0x89, 0x90, 0x82, 0xc5, 0x03, 0x28, 0x00, 0x3d, 0x89, 0x09, 0xbc, 0x01, 0x86, 0x8b, 0x38, 0x89, 0xd6, 0x01, 0x88, 0x8a, 0x30, 0x89, 0xbd, 0x0d, 0x89, 0x8a, 0x00, 0x00, 0x03, 0x81, 0xb0, 0x93, 0x01, 0x84, 0x8a, 0x80, 0xa3, 0x88, 0x80, 0xe3, 0x93, 0x80, 0x89, 0x8b, 0x1b, 0x10, 0x11, 0x32, 0x83, 0x8c, 0x8b, 0x80, 0x8e, 0x42, 0xbe, 0x82, 0x88, 0x88, 0x43, 0x9f, 0x83, 0x9b, 0x82, 0x9c, 0x81, 0x9d, 0x81, 0xbf, 0x9f, 0x88, 0x01, 0x89, 0xa0, 0x10, 0x8a, 0x40, 0x8e, 0x80, 0xf5, 0x8b, 0x83, 0x8b, 0x89, 0x89, 0xff, 0x8a, 0xbb, 0x84, 0xb8, 0x89, 0x80, 0x9c, 0x81, 0x8a, 0x85, 0x89, 0x95, 0x8d, 0x80, 0x8f, 0xb0, 0x84, 0xae, 0x90, 0x8a, 0x89, 0x90, 0x88, 0x8b, 0x82, 0x9d, 0x8c, 0x81, 0x89, 0xab, 0x8d, 0xaf, 0x93, 0x87, 0x89, 0x85, 0x89, 0xf5, 0x10, 0x94, 0x18, 0x28, 0x0a, 0x40, 0xc5, 0xbf, 0x42, 0x0b, 0x81, 0xb0, 0x81, 0x92, 0x80, 0xfa, 0x8c, 0x18, 0x82, 0x8b, 0x4b, 0xfd, 0x82, 0x40, 0x8c, 0x80, 0xdf, 0x9f, 0x42, 0x29, 0x85, 0xe8, 0x81, 0xdf, 0x80, 0x60, 0x75, 0x23, 0x89, 0xc4, 0x03, 0x89, 0x9f, 0x81, 0xcf, 0x81, 0x41, 0x0f, 0x02, 0x03, 0x80, 0x96, 0x23, 0x80, 0xd2, 0x81, 0xb1, 0x91, 0x89, 0x89, 0x85, 0x91, 0x8c, 0x8a, 0x9b, 0x87, 0x98, 0x8c, 0xab, 0x83, 0xae, 0x8d, 0x8e, 0x89, 0x8a, 0x80, 0x89, 0x89, 0xae, 0x8d, 0x8b, 0x07, 0x09, 0x89, 0xa0, 0x82, 0xb1, 0x00, 0x11, 0x0c, 0x08, 0x80, 0xa8, 0x24, 0x81, 0x40, 0xeb, 0x38, 0x09, 0x89, 0x60, 0x4f, 0x23, 0x80, 0x42, 0xe0, 0x8f, 0x8f, 0x8f, 0x11, 0x97, 0x82, 0x40, 0xbf, 0x89, 0xa4, 0x80, 0xa4, 0x80, 0x42, 0x96, 0x80, 0x40, 0xe1, 0x80, 0x40, 0x94, 0x84, 0x41, 0x24, 0x89, 0x45, 0x56, 0x10, 0x0c, 0x83, 0xa7, 0x13, 0x80, 0x40, 0xa4, 0x81, 0x42, 0x3c, 0x1f, 0x89, 0x85, 0x89, 0x9e, 0x84, 0x41, 0x3c, 0x81, 0xce, 0x83, 0xc5, 0x8a, 0xb0, 0x83, 0xf9, 0x82, 0xb4, 0x8e, 0x9e, 0x8a, 0x09, 0x89, 0x83, 0xac, 0x8a, 0x30, 0xac, 0x89, 0x2a, 0xa3, 0x8d, 0x80, 0x89, 0x21, 0xab, 0x80, 0x8b, 0x82, 0xaf, 0x8d, 0x3b, 0x80, 0x8b, 0xd1, 0x8b, 0x28, 0x08, 0x40, 0x9c, 0x8b, 0x84, 0x89, 0x2b, 0xb6, 0x08, 0x31, 0x09, 0x82, 0x88, 0x80, 0x89, 0x09, 0x32, 0x84, 0xc2, 0x88, 0x00, 0x08, 0x03, 0x04, 0x00, 0x8d, 0x81, 0xd1, 0x91, 0x88, 0x89, 0x18, 0xd0, 0x93, 0x8b, 0x89, 0x40, 0xd4, 0x31, 0x88, 0x9a, 0x81, 0xd1, 0x90, 0x8e, 0x89, 0xd0, 0x8c, 0x87, 0x89, 0x85, 0x93, 0xb8, 0x8e, 0x83, 0x89, 0x40, 0xf1, 0x8e, 0x40, 0xa4, 0x89, 0xc5, 0x28, 0x09, 0x18, 0x00, 0x81, 0x8b, 0x89, 0xf6, 0x31, 0x32, 0x80, 0x9b, 0x89, 0xa7, 0x30, 0x1f, 0x80, 0x88, 0x8a, 0xad, 0x8f, 0x41, 0x55, 0x89, 0xb4, 0x38, 0x87, 0x8f, 0x89, 0xb7, 0x95, 0x80, 0x8d, 0xf9, 0x2a, 0x00, 0x08, 0x30, 0x07, 0x89, 0xaf, 0x20, 0x08, 0x27, 0x89, 0x41, 0x48, 0x83, 0x88, 0x08, 0x80, 0xaf, 0x32, 0x84, 0x8c, 0x8a, 0x54, 0xe4, 0x05, 0x8e, 0x60, 0x2c, 0xc7, 0x9b, 0x49, 0x25, 0x89, 0xd5, 0x89, 0xa5, 0x84, 0xba, 0x86, 0x98, 0x89, 0x42, 0x15, 0x89, 0x41, 0xd4, 0x00, 0xb6, 0x33, 0xd0, 0x80, 0x8a, 0x81, 0x60, 0x4c, 0xaa, 0x81, 0x50, 0x50, 0x89, 0x42, 0x05, 0xad, 0x81, 0x96, 0x42, 0x1d, 0x22, 0x2f, 0x39, 0x86, 0x9d, 0x83, 0x40, 0x93, 0x82, 0x45, 0x88, 0xb1, 0x41, 0xff, 0xb6, 0x83, 0xb1, 0x38, 0x8d, 0x80, 0x95, 0x20, 0x8e, 0x45, 0x4f, 0x30, 0x90, 0x0e, 0x01, 0x04, 0xe3, 0x80, 0x40, 0x9f, 0x86, 0x88, 0x89, 0x41, 0x63, 0x80, 0xbc, 0x8d, 0x41, 0xf1, 0x8d, 0x40, 0xf3, 0x08, 0x89, 0x42, 0xd4, 0x86, 0xec, 0x34, 0x89, 0x52, 0x95, 0x89, 0x6c, 0x05, 0x05, 0x40, 0xef, }; static const uint8_t unicode_prop_ID_Continue1_index[66] = { 0xfa, 0x06, 0x00, 0x70, 0x09, 0x00, 0xf0, 0x0a, 0x40, 0x57, 0x0c, 0x00, 0xf0, 0x0d, 0x60, 0xc7, 0x0f, 0x20, 0xea, 0x17, 0x40, 0x05, 0x1b, 0x00, 0x0e, 0x20, 0x00, 0xa0, 0xa6, 0x20, 0xe6, 0xa9, 0x20, 0x10, 0xfe, 0x00, 0x40, 0x0a, 0x01, 0xc3, 0x10, 0x01, 0x4e, 0x13, 0x01, 0x41, 0x16, 0x01, 0x0b, 0x1a, 0x01, 0xaa, 0x1d, 0x01, 0x7a, 0x6d, 0x21, 0x45, 0xd2, 0x21, 0xaf, 0xe2, 0x01, 0xf0, 0x01, 0x0e, }; static const uint8_t unicode_prop_White_Space_table[22] = { 0x88, 0x84, 0x91, 0x80, 0xe3, 0x80, 0x99, 0x80, 0x55, 0xde, 0x80, 0x49, 0x7e, 0x8a, 0x9c, 0x0c, 0x80, 0xae, 0x80, 0x4f, 0x9f, 0x80, }; static const uint8_t unicode_prop_White_Space_index[3] = { 0x01, 0x30, 0x00, }; static const uint8_t unicode_cc_table[916] = { 0xb2, 0xcf, 0xd4, 0x00, 0xe8, 0x03, 0xdc, 0x00, 0xe8, 0x00, 0xd8, 0x04, 0xdc, 0x01, 0xca, 0x03, 0xdc, 0x01, 0xca, 0x0a, 0xdc, 0x04, 0x01, 0x03, 0xdc, 0xc7, 0x00, 0xf0, 0xc0, 0x02, 0xdc, 0xc2, 0x01, 0xdc, 0x80, 0xc2, 0x03, 0xdc, 0xc0, 0x00, 0xe8, 0x01, 0xdc, 0xc0, 0x41, 0xe9, 0x00, 0xea, 0x41, 0xe9, 0x00, 0xea, 0x00, 0xe9, 0xcc, 0xb0, 0xe2, 0xc4, 0xb0, 0xd8, 0x00, 0xdc, 0xc3, 0x00, 0xdc, 0xc2, 0x00, 0xde, 0x00, 0xdc, 0xc5, 0x05, 0xdc, 0xc1, 0x00, 0xdc, 0xc1, 0x00, 0xde, 0x00, 0xe4, 0xc0, 0x49, 0x0a, 0x43, 0x13, 0x80, 0x00, 0x17, 0x80, 0x41, 0x18, 0x80, 0xc0, 0x00, 0xdc, 0x80, 0x00, 0x12, 0xb0, 0x17, 0xc7, 0x42, 0x1e, 0xaf, 0x47, 0x1b, 0xc1, 0x01, 0xdc, 0xc4, 0x00, 0xdc, 0xc1, 0x00, 0xdc, 0x8f, 0x00, 0x23, 0xb0, 0x34, 0xc6, 0x81, 0xc3, 0x00, 0xdc, 0xc0, 0x81, 0xc1, 0x80, 0x00, 0xdc, 0xc1, 0x00, 0xdc, 0xa2, 0x00, 0x24, 0x9d, 0xc0, 0x00, 0xdc, 0xc1, 0x00, 0xdc, 0xc1, 0x02, 0xdc, 0xc0, 0x01, 0xdc, 0xc0, 0x00, 0xdc, 0xc2, 0x00, 0xdc, 0xc0, 0x00, 0xdc, 0xc0, 0x00, 0xdc, 0xc0, 0x00, 0xdc, 0xc1, 0xb0, 0x6f, 0xc6, 0x00, 0xdc, 0xc0, 0x88, 0x00, 0xdc, 0x97, 0xc3, 0x80, 0xc8, 0x80, 0xc2, 0x80, 0xc4, 0xaa, 0x02, 0xdc, 0xb0, 0x0a, 0xc1, 0x02, 0xdc, 0xc3, 0xa9, 0xc4, 0x04, 0xdc, 0xcd, 0x80, 0x00, 0xdc, 0xc1, 0x00, 0xdc, 0xc1, 0x00, 0xdc, 0xc2, 0x02, 0xdc, 0x42, 0x1b, 0xc2, 0x00, 0xdc, 0xc1, 0x01, 0xdc, 0xc4, 0xb0, 0x0b, 0x00, 0x07, 0x8f, 0x00, 0x09, 0x82, 0xc0, 0x00, 0xdc, 0xc1, 0xb0, 0x36, 0x00, 0x07, 0x8f, 0x00, 0x09, 0xaf, 0xc0, 0xb0, 0x0c, 0x00, 0x07, 0x8f, 0x00, 0x09, 0xb0, 0x3d, 0x00, 0x07, 0x8f, 0x00, 0x09, 0xb0, 0x3d, 0x00, 0x07, 0x8f, 0x00, 0x09, 0xb0, 0x4e, 0x00, 0x09, 0xb0, 0x3d, 0x00, 0x07, 0x8f, 0x00, 0x09, 0x86, 0x00, 0x54, 0x00, 0x5b, 0xb0, 0x34, 0x00, 0x07, 0x8f, 0x00, 0x09, 0xb0, 0x3c, 0x01, 0x09, 0x8f, 0x00, 0x09, 0xb0, 0x4b, 0x00, 0x09, 0xb0, 0x3c, 0x01, 0x67, 0x00, 0x09, 0x8c, 0x03, 0x6b, 0xb0, 0x3b, 0x01, 0x76, 0x00, 0x09, 0x8c, 0x03, 0x7a, 0xb0, 0x1b, 0x01, 0xdc, 0x9a, 0x00, 0xdc, 0x80, 0x00, 0xdc, 0x80, 0x00, 0xd8, 0xb0, 0x06, 0x41, 0x81, 0x80, 0x00, 0x84, 0x84, 0x03, 0x82, 0x81, 0x00, 0x82, 0x80, 0xc1, 0x00, 0x09, 0x80, 0xc1, 0xb0, 0x0d, 0x00, 0xdc, 0xb0, 0x3f, 0x00, 0x07, 0x80, 0x01, 0x09, 0xb0, 0x21, 0x00, 0xdc, 0xb2, 0x9e, 0xc2, 0xb3, 0x83, 0x01, 0x09, 0x9d, 0x00, 0x09, 0xb0, 0x6c, 0x00, 0x09, 0x89, 0xc0, 0xb0, 0x9a, 0x00, 0xe4, 0xb0, 0x5e, 0x00, 0xde, 0xc0, 0x00, 0xdc, 0xb0, 0xaa, 0xc0, 0x00, 0xdc, 0xb0, 0x16, 0x00, 0x09, 0x93, 0xc7, 0x81, 0x00, 0xdc, 0xaf, 0xc4, 0x05, 0xdc, 0xc1, 0x00, 0xdc, 0x80, 0x01, 0xdc, 0xc1, 0x01, 0xdc, 0xc4, 0x00, 0xdc, 0xc3, 0xb0, 0x34, 0x00, 0x07, 0x8e, 0x00, 0x09, 0xa5, 0xc0, 0x00, 0xdc, 0xc6, 0xb0, 0x05, 0x01, 0x09, 0xb0, 0x09, 0x00, 0x07, 0x8a, 0x01, 0x09, 0xb0, 0x12, 0x00, 0x07, 0xb0, 0x67, 0xc2, 0x41, 0x00, 0x04, 0xdc, 0xc1, 0x03, 0xdc, 0xc0, 0x41, 0x00, 0x05, 0x01, 0x83, 0x00, 0xdc, 0x85, 0xc0, 0x82, 0xc1, 0xb0, 0x95, 0xc1, 0x00, 0xdc, 0xc6, 0x00, 0xdc, 0xc1, 0x00, 0xea, 0x00, 0xd6, 0x00, 0xdc, 0x00, 0xca, 0xe4, 0x00, 0xe8, 0x01, 0xe4, 0x00, 0xdc, 0x00, 0xda, 0xc0, 0x00, 0xe9, 0x00, 0xdc, 0xc0, 0x00, 0xdc, 0xb2, 0x9f, 0xc1, 0x01, 0x01, 0xc3, 0x02, 0x01, 0xc1, 0x83, 0xc0, 0x82, 0x01, 0x01, 0xc0, 0x00, 0xdc, 0xc0, 0x01, 0x01, 0x03, 0xdc, 0xc0, 0xb8, 0x03, 0xcd, 0xc2, 0xb0, 0x5c, 0x00, 0x09, 0xb0, 0x2f, 0xdf, 0xb1, 0xf9, 0x00, 0xda, 0x00, 0xe4, 0x00, 0xe8, 0x00, 0xde, 0x01, 0xe0, 0xb0, 0x38, 0x01, 0x08, 0xb8, 0x6d, 0xa3, 0xc0, 0x83, 0xc9, 0x9f, 0xc1, 0xb0, 0x1f, 0xc1, 0xb0, 0xe3, 0x00, 0x09, 0xa4, 0x00, 0x09, 0xb0, 0x66, 0x00, 0x09, 0x9a, 0xd1, 0xb0, 0x08, 0x02, 0xdc, 0xa4, 0x00, 0x09, 0xb0, 0x2e, 0x00, 0x07, 0x8b, 0x00, 0x09, 0xb0, 0xbe, 0xc0, 0x80, 0xc1, 0x00, 0xdc, 0x81, 0xc1, 0x84, 0xc1, 0x80, 0xc0, 0xb0, 0x03, 0x00, 0x09, 0xb0, 0xc5, 0x00, 0x09, 0xb8, 0x46, 0xff, 0x00, 0x1a, 0xb2, 0xd0, 0xc6, 0x06, 0xdc, 0xc1, 0xb3, 0x9c, 0x00, 0xdc, 0xb0, 0xb1, 0x00, 0xdc, 0xb0, 0x64, 0xc4, 0xb6, 0x61, 0x00, 0xdc, 0x80, 0xc0, 0xa7, 0xc0, 0x00, 0x01, 0x00, 0xdc, 0x83, 0x00, 0x09, 0xb0, 0x74, 0xc0, 0x00, 0xdc, 0xb2, 0x0c, 0xc3, 0xb0, 0x10, 0xc4, 0xb1, 0x0c, 0xc1, 0xb0, 0x1f, 0x02, 0xdc, 0xb0, 0x15, 0x01, 0xdc, 0xc2, 0x00, 0xdc, 0xc0, 0x03, 0xdc, 0xb0, 0x00, 0xc0, 0x00, 0xdc, 0xc0, 0x00, 0xdc, 0xb0, 0x8f, 0x00, 0x09, 0xa8, 0x00, 0x09, 0x8d, 0x00, 0x09, 0xb0, 0x08, 0x00, 0x09, 0x00, 0x07, 0xb0, 0x14, 0xc2, 0xaf, 0x01, 0x09, 0xb0, 0x0d, 0x00, 0x07, 0xb0, 0x1b, 0x00, 0x09, 0x88, 0x00, 0x07, 0xb0, 0x39, 0x00, 0x09, 0x00, 0x07, 0xb0, 0x81, 0x00, 0x07, 0x00, 0x09, 0xb0, 0x1f, 0x01, 0x07, 0x8f, 0x00, 0x09, 0x97, 0xc6, 0x82, 0xc4, 0xb0, 0x28, 0x02, 0x09, 0xb0, 0x40, 0x00, 0x09, 0x82, 0x00, 0x07, 0x96, 0xc0, 0xb0, 0x32, 0x00, 0x09, 0x00, 0x07, 0xb0, 0xca, 0x00, 0x09, 0x00, 0x07, 0xb0, 0x4d, 0x00, 0x09, 0xb0, 0x45, 0x00, 0x09, 0x00, 0x07, 0xb0, 0x42, 0x00, 0x09, 0xb0, 0xdc, 0x00, 0x09, 0x00, 0x07, 0xb0, 0xd1, 0x01, 0x09, 0x83, 0x00, 0x07, 0xb0, 0x6b, 0x00, 0x09, 0xb0, 0x22, 0x00, 0x09, 0x91, 0x00, 0x09, 0xb0, 0x20, 0x00, 0x09, 0xb1, 0x74, 0x00, 0x09, 0xb0, 0xd1, 0x00, 0x07, 0x80, 0x01, 0x09, 0xb0, 0x20, 0x00, 0x09, 0xb1, 0x78, 0x01, 0x09, 0xb8, 0x39, 0xbb, 0x00, 0x09, 0xb8, 0x01, 0x8f, 0x04, 0x01, 0xb0, 0x0a, 0xc6, 0xb4, 0x88, 0x01, 0x06, 0xb8, 0x44, 0x7b, 0x00, 0x01, 0xb8, 0x0c, 0x95, 0x01, 0xd8, 0x02, 0x01, 0x82, 0x00, 0xe2, 0x04, 0xd8, 0x87, 0x07, 0xdc, 0x81, 0xc4, 0x01, 0xdc, 0x9d, 0xc3, 0xb0, 0x63, 0xc2, 0xb8, 0x05, 0x8a, 0xc6, 0x80, 0xd0, 0x81, 0xc6, 0x80, 0xc1, 0x80, 0xc4, 0xb0, 0x33, 0xc0, 0xb0, 0x6f, 0xc6, 0xb1, 0x46, 0xc0, 0xb0, 0x0c, 0xc3, 0xb1, 0xcb, 0x01, 0xe8, 0x00, 0xdc, 0xc0, 0xb0, 0xcd, 0xc0, 0x00, 0xdc, 0xb2, 0xaf, 0x06, 0xdc, 0xb0, 0x3c, 0xc5, 0x00, 0x07, }; static const uint8_t unicode_cc_index[87] = { 0x4d, 0x03, 0x00, 0x97, 0x05, 0x20, 0xc6, 0x05, 0x00, 0xe7, 0x06, 0x00, 0x45, 0x07, 0x00, 0x9c, 0x08, 0x00, 0x4d, 0x09, 0x00, 0x3c, 0x0b, 0x00, 0x3d, 0x0d, 0x00, 0x36, 0x0f, 0x00, 0x38, 0x10, 0x20, 0x3a, 0x19, 0x00, 0xcb, 0x1a, 0x20, 0xd3, 0x1c, 0x00, 0xcf, 0x1d, 0x00, 0xe2, 0x20, 0x00, 0x2e, 0x30, 0x20, 0x2b, 0xa9, 0x20, 0xed, 0xab, 0x00, 0x39, 0x0a, 0x01, 0x4c, 0x0f, 0x01, 0x35, 0x11, 0x21, 0x66, 0x13, 0x01, 0x40, 0x16, 0x01, 0x47, 0x1a, 0x01, 0xf0, 0x6a, 0x21, 0x8a, 0xd1, 0x01, 0xec, 0xe4, 0x21, 0x4b, 0xe9, 0x01, }; static const uint32_t unicode_decomp_table1[709] = { 0x00280081, 0x002a0097, 0x002a8081, 0x002bc097, 0x002c8115, 0x002d0097, 0x002d4081, 0x002e0097, 0x002e4115, 0x002f0199, 0x00302016, 0x00400842, 0x00448a42, 0x004a0442, 0x004c0096, 0x004c8117, 0x004d0242, 0x004e4342, 0x004fc12f, 0x0050c342, 0x005240bf, 0x00530342, 0x00550942, 0x005a0842, 0x005e0096, 0x005e4342, 0x005fc081, 0x00680142, 0x006bc142, 0x00710185, 0x0071c317, 0x00734844, 0x00778344, 0x00798342, 0x007b02be, 0x007c4197, 0x007d0142, 0x007e0444, 0x00800e42, 0x00878142, 0x00898744, 0x00ac0483, 0x00b60317, 0x00b80283, 0x00d00214, 0x00d10096, 0x00dd0080, 0x00de8097, 0x00df8080, 0x00e10097, 0x00e1413e, 0x00e1c080, 0x00e204be, 0x00ea83ae, 0x00f282ae, 0x00f401ad, 0x00f4c12e, 0x00f54103, 0x00fc0303, 0x00fe4081, 0x0100023e, 0x0101c0be, 0x010301be, 0x010640be, 0x010e40be, 0x0114023e, 0x0115c0be, 0x011701be, 0x011d8144, 0x01304144, 0x01340244, 0x01358144, 0x01368344, 0x01388344, 0x013a8644, 0x013e0144, 0x0161c085, 0x018882ae, 0x019d422f, 0x01b00184, 0x01b4c084, 0x024a4084, 0x024c4084, 0x024d0084, 0x0256042e, 0x0272c12e, 0x02770120, 0x0277c084, 0x028cc084, 0x028d8084, 0x029641ae, 0x02978084, 0x02d20084, 0x02d2c12e, 0x02d70120, 0x02e50084, 0x02f281ae, 0x03120084, 0x03300084, 0x0331c122, 0x0332812e, 0x035281ae, 0x03768084, 0x037701ae, 0x038cc085, 0x03acc085, 0x03b7012f, 0x03c30081, 0x03d0c084, 0x03d34084, 0x03d48084, 0x03d5c084, 0x03d70084, 0x03da4084, 0x03dcc084, 0x03dd412e, 0x03ddc085, 0x03de0084, 0x03de4085, 0x03e04084, 0x03e4c084, 0x03e74084, 0x03e88084, 0x03e9c084, 0x03eb0084, 0x03ee4084, 0x04098084, 0x043f0081, 0x06c18484, 0x06c48084, 0x06cec184, 0x06d00120, 0x06d0c084, 0x074b0383, 0x074cc41f, 0x074f1783, 0x075e0081, 0x0766d283, 0x07801d44, 0x078e8942, 0x07931844, 0x079f0d42, 0x07a58216, 0x07a68085, 0x07a6c0be, 0x07a80d44, 0x07aea044, 0x07c00122, 0x07c08344, 0x07c20122, 0x07c28344, 0x07c40122, 0x07c48244, 0x07c60122, 0x07c68244, 0x07c8113e, 0x07d08244, 0x07d20122, 0x07d28244, 0x07d40122, 0x07d48344, 0x07d64c3e, 0x07dc4080, 0x07dc80be, 0x07dcc080, 0x07dd00be, 0x07dd4080, 0x07dd80be, 0x07ddc080, 0x07de00be, 0x07de4080, 0x07de80be, 0x07dec080, 0x07df00be, 0x07df4080, 0x07e00820, 0x07e40820, 0x07e80820, 0x07ec05be, 0x07eec080, 0x07ef00be, 0x07ef4097, 0x07ef8080, 0x07efc117, 0x07f0443e, 0x07f24080, 0x07f280be, 0x07f2c080, 0x07f303be, 0x07f4c080, 0x07f582ae, 0x07f6c080, 0x07f7433e, 0x07f8c080, 0x07f903ae, 0x07fac080, 0x07fb013e, 0x07fb8102, 0x07fc83be, 0x07fe4080, 0x07fe80be, 0x07fec080, 0x07ff00be, 0x07ff4080, 0x07ff8097, 0x0800011e, 0x08008495, 0x08044081, 0x0805c097, 0x08090081, 0x08094097, 0x08098099, 0x080bc081, 0x080cc085, 0x080d00b1, 0x080d8085, 0x080dc0b1, 0x080f0197, 0x0811c197, 0x0815c0b3, 0x0817c081, 0x081c0595, 0x081ec081, 0x081f0215, 0x0820051f, 0x08228583, 0x08254415, 0x082a0097, 0x08400119, 0x08408081, 0x0840c0bf, 0x08414119, 0x0841c081, 0x084240bf, 0x0842852d, 0x08454081, 0x08458097, 0x08464295, 0x08480097, 0x08484099, 0x08488097, 0x08490081, 0x08498080, 0x084a0081, 0x084a8102, 0x084b0495, 0x084d421f, 0x084e4081, 0x084ec099, 0x084f0283, 0x08514295, 0x08540119, 0x0854809b, 0x0854c619, 0x0857c097, 0x08580081, 0x08584097, 0x08588099, 0x0858c097, 0x08590081, 0x08594097, 0x08598099, 0x0859c09b, 0x085a0097, 0x085a4081, 0x085a8097, 0x085ac099, 0x085b0295, 0x085c4097, 0x085c8099, 0x085cc097, 0x085d0081, 0x085d4097, 0x085d8099, 0x085dc09b, 0x085e0097, 0x085e4081, 0x085e8097, 0x085ec099, 0x085f0215, 0x08624099, 0x0866813e, 0x086b80be, 0x087341be, 0x088100be, 0x088240be, 0x088300be, 0x088901be, 0x088b0085, 0x088b40b1, 0x088bc085, 0x088c00b1, 0x089040be, 0x089100be, 0x0891c1be, 0x089801be, 0x089b42be, 0x089d0144, 0x089e0144, 0x08a00144, 0x08a10144, 0x08a20144, 0x08ab023e, 0x08b80244, 0x08ba8220, 0x08ca411e, 0x0918049f, 0x091a4523, 0x091cc097, 0x091d04a5, 0x091f452b, 0x0921c09b, 0x092204a1, 0x09244525, 0x0926c099, 0x09270d25, 0x092d8d1f, 0x09340d1f, 0x093a8081, 0x0a8300b3, 0x0a9d0099, 0x0a9d4097, 0x0a9d8099, 0x0ab700be, 0x0b1f0115, 0x0b5bc081, 0x0ba7c081, 0x0bbcc081, 0x0bc004ad, 0x0bc244ad, 0x0bc484ad, 0x0bc6f383, 0x0be0852d, 0x0be31d03, 0x0bf1882d, 0x0c000081, 0x0c0d8283, 0x0c130b84, 0x0c194284, 0x0c1c0122, 0x0c1cc122, 0x0c1d8122, 0x0c1e4122, 0x0c1f0122, 0x0c250084, 0x0c26c123, 0x0c278084, 0x0c27c085, 0x0c2b0b84, 0x0c314284, 0x0c340122, 0x0c34c122, 0x0c358122, 0x0c364122, 0x0c370122, 0x0c3d0084, 0x0c3dc220, 0x0c3f8084, 0x0c3fc085, 0x0c4c4a2d, 0x0c51451f, 0x0c53ca9f, 0x0c5915ad, 0x0c648703, 0x0c800741, 0x0c838089, 0x0c83c129, 0x0c8441a9, 0x0c850089, 0x0c854129, 0x0c85c2a9, 0x0c870089, 0x0c87408f, 0x0c87808d, 0x0c881241, 0x0c910203, 0x0c940099, 0x0c9444a3, 0x0c968323, 0x0c98072d, 0x0c9b84af, 0x0c9dc2a1, 0x0c9f00b5, 0x0c9f40b3, 0x0c9f8085, 0x0ca01883, 0x0cac4223, 0x0cad4523, 0x0cafc097, 0x0cb004a1, 0x0cb241a5, 0x0cb30097, 0x0cb34099, 0x0cb38097, 0x0cb3c099, 0x0cb417ad, 0x0cbfc085, 0x0cc001b3, 0x0cc0c0b1, 0x0cc100b3, 0x0cc14131, 0x0cc1c0b5, 0x0cc200b3, 0x0cc241b1, 0x0cc30133, 0x0cc38131, 0x0cc40085, 0x0cc440b1, 0x0cc48133, 0x0cc50085, 0x0cc540b5, 0x0cc580b7, 0x0cc5c0b5, 0x0cc600b1, 0x0cc64135, 0x0cc6c0b3, 0x0cc701b1, 0x0cc7c0b3, 0x0cc800b5, 0x0cc840b3, 0x0cc881b1, 0x0cc9422f, 0x0cca4131, 0x0ccac0b5, 0x0ccb00b1, 0x0ccb40b3, 0x0ccb80b5, 0x0ccbc0b1, 0x0ccc012f, 0x0ccc80b5, 0x0cccc0b3, 0x0ccd00b5, 0x0ccd40b1, 0x0ccd80b5, 0x0ccdc085, 0x0cce02b1, 0x0ccf40b3, 0x0ccf80b1, 0x0ccfc085, 0x0cd001b1, 0x0cd0c0b3, 0x0cd101b1, 0x0cd1c0b5, 0x0cd200b3, 0x0cd24085, 0x0cd280b5, 0x0cd2c085, 0x0cd30133, 0x0cd381b1, 0x0cd440b3, 0x0cd48085, 0x0cd4c0b1, 0x0cd500b3, 0x0cd54085, 0x0cd580b5, 0x0cd5c0b1, 0x0cd60521, 0x0cd88525, 0x0cdb02a5, 0x0cdc4099, 0x0cdc8117, 0x0cdd0099, 0x0cdd4197, 0x0cde0127, 0x0cde8285, 0x0cdfc089, 0x0ce0043f, 0x0ce20099, 0x0ce2409b, 0x0ce283bf, 0x0ce44219, 0x0ce54205, 0x0ce6433f, 0x0ce7c131, 0x0ce84085, 0x0ce881b1, 0x0ce94085, 0x0ce98107, 0x0cea0089, 0x0cea4097, 0x0cea8219, 0x0ceb809d, 0x0cebc08d, 0x0cec083f, 0x0cf00105, 0x0cf0809b, 0x0cf0c197, 0x0cf1809b, 0x0cf1c099, 0x0cf20517, 0x0cf48099, 0x0cf4c117, 0x0cf54119, 0x0cf5c097, 0x0cf6009b, 0x0cf64099, 0x0cf68217, 0x0cf78119, 0x0cf804a1, 0x0cfa4525, 0x0cfcc525, 0x0cff4125, 0x0cffc099, 0x29a70103, 0x29dc0081, 0x29fc8195, 0x29fe0103, 0x2ad70203, 0x2ada4081, 0x3e401482, 0x3e4a7f82, 0x3e6a3f82, 0x3e8aa102, 0x3e9b0110, 0x3e9c2f82, 0x3eb3c590, 0x3ec00197, 0x3ec0c119, 0x3ec1413f, 0x3ec4c2af, 0x3ec74184, 0x3ec804ad, 0x3eca4081, 0x3eca8304, 0x3ecc03a0, 0x3ece02a0, 0x3ecf8084, 0x3ed00120, 0x3ed0c120, 0x3ed184ae, 0x3ed3c085, 0x3ed4312d, 0x3ef4cbad, 0x3efa892f, 0x3eff022d, 0x3f002f2f, 0x3f1782a5, 0x3f18c0b1, 0x3f1907af, 0x3f1cffaf, 0x3f3c81a5, 0x3f3d64af, 0x3f542031, 0x3f649b31, 0x3f7c0131, 0x3f7c83b3, 0x3f7e40b1, 0x3f7e80bd, 0x3f7ec0bb, 0x3f7f00b3, 0x3f840503, 0x3f8c01ad, 0x3f8cc315, 0x3f8e462d, 0x3f91cc03, 0x3f97c695, 0x3f9c01af, 0x3f9d0085, 0x3f9d852f, 0x3fa03aad, 0x3fbd442f, 0x3fc06f1f, 0x3fd7c11f, 0x3fd85fad, 0x3fe80081, 0x3fe84f1f, 0x3ff0831f, 0x3ff2831f, 0x3ff4831f, 0x3ff6819f, 0x3ff80783, 0x41724092, 0x41790092, 0x41e04d83, 0x41e70f91, 0x44268192, 0x442ac092, 0x444b8112, 0x44d2c112, 0x44e0c192, 0x44e38092, 0x44e44092, 0x44f14212, 0x452ec212, 0x456e8112, 0x464e0092, 0x58484412, 0x5b5a0192, 0x73358d1f, 0x733c051f, 0x74578392, 0x746ec312, 0x75000d1f, 0x75068d1f, 0x750d0d1f, 0x7513839f, 0x7515891f, 0x751a0d1f, 0x75208d1f, 0x75271015, 0x752f439f, 0x7531459f, 0x75340d1f, 0x753a8d1f, 0x75410395, 0x7543441f, 0x7545839f, 0x75478d1f, 0x754e0795, 0x7552839f, 0x75548d1f, 0x755b0d1f, 0x75618d1f, 0x75680d1f, 0x756e8d1f, 0x75750d1f, 0x757b8d1f, 0x75820d1f, 0x75888d1f, 0x758f0d1f, 0x75958d1f, 0x759c0d1f, 0x75a28d1f, 0x75a90103, 0x75aa089f, 0x75ae4081, 0x75ae839f, 0x75b04081, 0x75b08c9f, 0x75b6c081, 0x75b7032d, 0x75b8889f, 0x75bcc081, 0x75bd039f, 0x75bec081, 0x75bf0c9f, 0x75c54081, 0x75c5832d, 0x75c7089f, 0x75cb4081, 0x75cb839f, 0x75cd4081, 0x75cd8c9f, 0x75d3c081, 0x75d4032d, 0x75d5889f, 0x75d9c081, 0x75da039f, 0x75dbc081, 0x75dc0c9f, 0x75e24081, 0x75e2832d, 0x75e4089f, 0x75e84081, 0x75e8839f, 0x75ea4081, 0x75ea8c9f, 0x75f0c081, 0x75f1042d, 0x75f3851f, 0x75f6051f, 0x75f8851f, 0x75fb051f, 0x75fd851f, 0x780c049f, 0x780e419f, 0x780f059f, 0x7811c203, 0x7812d0ad, 0x781b0103, 0x7b80022d, 0x7b814dad, 0x7b884203, 0x7b89c081, 0x7b8a452d, 0x7b8d0403, 0x7b908081, 0x7b91dc03, 0x7ba0052d, 0x7ba2c8ad, 0x7ba84483, 0x7baac8ad, 0x7c400097, 0x7c404521, 0x7c440d25, 0x7c4a8087, 0x7c4ac115, 0x7c4b4117, 0x7c4c0d1f, 0x7c528217, 0x7c538099, 0x7c53c097, 0x7c5a8197, 0x7c640097, 0x7c80012f, 0x7c808081, 0x7c841603, 0x7c9004c1, 0x7c940103, 0x7efc051f, 0xbe0001ac, 0xbe00d110, 0xbe0947ac, 0xbe0d3910, 0xbe29872c, 0xbe2d022c, 0xbe2e3790, 0xbe49ff90, 0xbe69bc10, }; static const uint16_t unicode_decomp_table2[709] = { 0x0020, 0x0000, 0x0061, 0x0002, 0x0004, 0x0006, 0x03bc, 0x0008, 0x000a, 0x000c, 0x0015, 0x0095, 0x00a5, 0x00b9, 0x00c1, 0x00c3, 0x00c7, 0x00cb, 0x00d1, 0x00d7, 0x00dd, 0x00e0, 0x00e6, 0x00f8, 0x0108, 0x010a, 0x0073, 0x0110, 0x0112, 0x0114, 0x0120, 0x012c, 0x0144, 0x014d, 0x0153, 0x0162, 0x0168, 0x016a, 0x0176, 0x0192, 0x0194, 0x01a9, 0x01bb, 0x01c7, 0x01d1, 0x01d5, 0x02b9, 0x01d7, 0x003b, 0x01d9, 0x01db, 0x00b7, 0x01e1, 0x01fc, 0x020c, 0x0218, 0x021d, 0x0223, 0x0227, 0x03a3, 0x0233, 0x023f, 0x0242, 0x024b, 0x024e, 0x0251, 0x025d, 0x0260, 0x0269, 0x026c, 0x026f, 0x0275, 0x0278, 0x0281, 0x028a, 0x029c, 0x029f, 0x02a3, 0x02af, 0x02b9, 0x02c5, 0x02c9, 0x02cd, 0x02d1, 0x02d5, 0x02e7, 0x02ed, 0x02f1, 0x02f5, 0x02f9, 0x02fd, 0x0305, 0x0309, 0x030d, 0x0313, 0x0317, 0x031b, 0x0323, 0x0327, 0x032b, 0x032f, 0x0335, 0x033d, 0x0341, 0x0349, 0x034d, 0x0351, 0x0f0b, 0x0357, 0x035b, 0x035f, 0x0363, 0x0367, 0x036b, 0x036f, 0x0373, 0x0379, 0x037d, 0x0381, 0x0385, 0x0389, 0x038d, 0x0391, 0x0395, 0x0399, 0x039d, 0x03a1, 0x10dc, 0x03a5, 0x03c9, 0x03cd, 0x03d9, 0x03dd, 0x03e1, 0x03ef, 0x03f1, 0x043d, 0x044f, 0x0499, 0x04f0, 0x0502, 0x054a, 0x0564, 0x056c, 0x0570, 0x0573, 0x059a, 0x05fa, 0x05fe, 0x0607, 0x060b, 0x0614, 0x0618, 0x061e, 0x0622, 0x0628, 0x068e, 0x0694, 0x0698, 0x069e, 0x06a2, 0x06ab, 0x03ac, 0x06f3, 0x03ad, 0x06f6, 0x03ae, 0x06f9, 0x03af, 0x06fc, 0x03cc, 0x06ff, 0x03cd, 0x0702, 0x03ce, 0x0705, 0x0709, 0x070d, 0x0711, 0x0386, 0x0732, 0x0735, 0x03b9, 0x0737, 0x073b, 0x0388, 0x0753, 0x0389, 0x0756, 0x0390, 0x076b, 0x038a, 0x0777, 0x03b0, 0x0789, 0x038e, 0x0799, 0x079f, 0x07a3, 0x038c, 0x07b8, 0x038f, 0x07bb, 0x00b4, 0x07be, 0x07c0, 0x07c2, 0x2010, 0x07cb, 0x002e, 0x07cd, 0x07cf, 0x0020, 0x07d2, 0x07d6, 0x07db, 0x07df, 0x07e4, 0x07ea, 0x07f0, 0x0020, 0x07f6, 0x2212, 0x0801, 0x0805, 0x0807, 0x081d, 0x0825, 0x0827, 0x0043, 0x082d, 0x0830, 0x0190, 0x0836, 0x0839, 0x004e, 0x0845, 0x0847, 0x084c, 0x084e, 0x0851, 0x005a, 0x03a9, 0x005a, 0x0853, 0x0857, 0x0860, 0x0069, 0x0862, 0x0865, 0x086f, 0x0874, 0x087a, 0x087e, 0x08a2, 0x0049, 0x08a4, 0x08a6, 0x08a9, 0x0056, 0x08ab, 0x08ad, 0x08b0, 0x08b4, 0x0058, 0x08b6, 0x08b8, 0x08bb, 0x08c0, 0x08c2, 0x08c5, 0x0076, 0x08c7, 0x08c9, 0x08cc, 0x08d0, 0x0078, 0x08d2, 0x08d4, 0x08d7, 0x08db, 0x08de, 0x08e4, 0x08e7, 0x08f0, 0x08f3, 0x08f6, 0x08f9, 0x0902, 0x0906, 0x090b, 0x090f, 0x0914, 0x0917, 0x091a, 0x0923, 0x092c, 0x093b, 0x093e, 0x0941, 0x0944, 0x0947, 0x094a, 0x0956, 0x095c, 0x0960, 0x0962, 0x0964, 0x0968, 0x096a, 0x0970, 0x0978, 0x097c, 0x0980, 0x0986, 0x0989, 0x098f, 0x0991, 0x0030, 0x0993, 0x0999, 0x099c, 0x099e, 0x09a1, 0x09a4, 0x2d61, 0x6bcd, 0x9f9f, 0x09a6, 0x09b1, 0x09bc, 0x09c7, 0x0a95, 0x0aa1, 0x0b15, 0x0020, 0x0b27, 0x0b31, 0x0b8d, 0x0ba1, 0x0ba5, 0x0ba9, 0x0bad, 0x0bb1, 0x0bb5, 0x0bb9, 0x0bbd, 0x0bc1, 0x0bc5, 0x0c21, 0x0c35, 0x0c39, 0x0c3d, 0x0c41, 0x0c45, 0x0c49, 0x0c4d, 0x0c51, 0x0c55, 0x0c59, 0x0c6f, 0x0c71, 0x0c73, 0x0ca0, 0x0cbc, 0x0cdc, 0x0ce4, 0x0cec, 0x0cf4, 0x0cfc, 0x0d04, 0x0d0c, 0x0d14, 0x0d22, 0x0d2e, 0x0d7a, 0x0d82, 0x0d85, 0x0d89, 0x0d8d, 0x0d9d, 0x0db1, 0x0db5, 0x0dbc, 0x0dc2, 0x0dc6, 0x0e28, 0x0e2c, 0x0e30, 0x0e32, 0x0e36, 0x0e3c, 0x0e3e, 0x0e41, 0x0e43, 0x0e46, 0x0e77, 0x0e7b, 0x0e89, 0x0e8e, 0x0e94, 0x0e9c, 0x0ea3, 0x0ea9, 0x0eb4, 0x0ebe, 0x0ec6, 0x0eca, 0x0ecf, 0x0ed9, 0x0edd, 0x0ee4, 0x0eec, 0x0ef3, 0x0ef8, 0x0f04, 0x0f0a, 0x0f15, 0x0f1b, 0x0f22, 0x0f28, 0x0f33, 0x0f3d, 0x0f45, 0x0f4c, 0x0f51, 0x0f57, 0x0f5e, 0x0f63, 0x0f69, 0x0f70, 0x0f76, 0x0f7d, 0x0f82, 0x0f89, 0x0f8d, 0x0f9e, 0x0fa4, 0x0fa9, 0x0fad, 0x0fb8, 0x0fbe, 0x0fc9, 0x0fd0, 0x0fd6, 0x0fda, 0x0fe1, 0x0fe5, 0x0fef, 0x0ffa, 0x1000, 0x1004, 0x1009, 0x100f, 0x1013, 0x101a, 0x101f, 0x1023, 0x1029, 0x102f, 0x1032, 0x1036, 0x1039, 0x103f, 0x1045, 0x1059, 0x1061, 0x1079, 0x107c, 0x1080, 0x1095, 0x10a1, 0x10b1, 0x10c3, 0x10cb, 0x10cf, 0x10da, 0x10de, 0x10ea, 0x10f2, 0x10f4, 0x1100, 0x1105, 0x1111, 0x1141, 0x1149, 0x114d, 0x1153, 0x1157, 0x115a, 0x116e, 0x1171, 0x1175, 0x117b, 0x117d, 0x1181, 0x1184, 0x118c, 0x1192, 0x1196, 0x119c, 0x11a2, 0x11a8, 0x11ab, 0xa76f, 0x11af, 0x11b2, 0x11b6, 0x028d, 0x11be, 0x1210, 0x130e, 0x140c, 0x1490, 0x1495, 0x1553, 0x156c, 0x1572, 0x1578, 0x157e, 0x158a, 0x1596, 0x002b, 0x15a1, 0x15b9, 0x15bd, 0x15c1, 0x15c5, 0x15c9, 0x15cd, 0x15e1, 0x15e5, 0x1649, 0x1662, 0x1688, 0x168e, 0x174c, 0x1752, 0x1757, 0x1777, 0x1877, 0x187d, 0x1911, 0x19d3, 0x1a77, 0x1a7f, 0x1a9d, 0x1aa2, 0x1ab6, 0x1ac0, 0x1ac6, 0x1ada, 0x1adf, 0x1ae5, 0x1af3, 0x1b23, 0x1b30, 0x1b38, 0x1b3c, 0x1b52, 0x1bc9, 0x1bdb, 0x1bdd, 0x1bdf, 0x3164, 0x1c20, 0x1c22, 0x1c24, 0x1c26, 0x1c28, 0x1c2a, 0x1c48, 0x1c4d, 0x1c52, 0x1c88, 0x1cce, 0x1cdc, 0x1ce1, 0x1cea, 0x1cf3, 0x1d01, 0x1d06, 0x1d0b, 0x1d1d, 0x1d2f, 0x1d38, 0x1d3d, 0x1d61, 0x1d6f, 0x1d71, 0x1d73, 0x1d93, 0x1dae, 0x1db0, 0x1db2, 0x1db4, 0x1db6, 0x1db8, 0x1dba, 0x1dbc, 0x1ddc, 0x1dde, 0x1de0, 0x1de2, 0x1de4, 0x1deb, 0x1ded, 0x1def, 0x1df1, 0x1e00, 0x1e02, 0x1e04, 0x1e06, 0x1e08, 0x1e0a, 0x1e0c, 0x1e0e, 0x1e10, 0x1e12, 0x1e14, 0x1e16, 0x1e18, 0x1e1a, 0x1e1c, 0x1e20, 0x03f4, 0x1e22, 0x2207, 0x1e24, 0x2202, 0x1e26, 0x1e2e, 0x03f4, 0x1e30, 0x2207, 0x1e32, 0x2202, 0x1e34, 0x1e3c, 0x03f4, 0x1e3e, 0x2207, 0x1e40, 0x2202, 0x1e42, 0x1e4a, 0x03f4, 0x1e4c, 0x2207, 0x1e4e, 0x2202, 0x1e50, 0x1e58, 0x03f4, 0x1e5a, 0x2207, 0x1e5c, 0x2202, 0x1e5e, 0x1e68, 0x1e6a, 0x1e6c, 0x1e6e, 0x1e70, 0x1e72, 0x1e74, 0x1e76, 0x1e78, 0x1e80, 0x1ea3, 0x1ea7, 0x1ead, 0x1eca, 0x062d, 0x1ed2, 0x1ede, 0x062c, 0x1eee, 0x1f5e, 0x1f6a, 0x1f7d, 0x1f8f, 0x1fa2, 0x1fa4, 0x1fa8, 0x1fae, 0x1fb4, 0x1fb6, 0x1fba, 0x1fbc, 0x1fc4, 0x1fc7, 0x1fc9, 0x1fcf, 0x1fd1, 0x30b5, 0x1fd7, 0x202f, 0x2045, 0x2049, 0x204b, 0x2050, 0x209d, 0x20ae, 0x21af, 0x21bf, 0x21c5, 0x22bf, 0x23dd, }; static const uint8_t unicode_decomp_data[9451] = { 0x20, 0x88, 0x20, 0x84, 0x32, 0x33, 0x20, 0x81, 0x20, 0xa7, 0x31, 0x6f, 0x31, 0xd0, 0x34, 0x31, 0xd0, 0x32, 0x33, 0xd0, 0x34, 0x41, 0x80, 0x41, 0x81, 0x41, 0x82, 0x41, 0x83, 0x41, 0x88, 0x41, 0x8a, 0x00, 0x00, 0x43, 0xa7, 0x45, 0x80, 0x45, 0x81, 0x45, 0x82, 0x45, 0x88, 0x49, 0x80, 0x49, 0x81, 0x49, 0x82, 0x49, 0x88, 0x00, 0x00, 0x4e, 0x83, 0x4f, 0x80, 0x4f, 0x81, 0x4f, 0x82, 0x4f, 0x83, 0x4f, 0x88, 0x00, 0x00, 0x00, 0x00, 0x55, 0x80, 0x55, 0x81, 0x55, 0x82, 0x55, 0x88, 0x59, 0x81, 0x00, 0x00, 0x00, 0x00, 0x61, 0x80, 0x61, 0x81, 0x61, 0x82, 0x61, 0x83, 0x61, 0x88, 0x61, 0x8a, 0x00, 0x00, 0x63, 0xa7, 0x65, 0x80, 0x65, 0x81, 0x65, 0x82, 0x65, 0x88, 0x69, 0x80, 0x69, 0x81, 0x69, 0x82, 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0x05, 0x9f, 0x0f, 0x9f, 0x16, 0x9f, 0x3b, 0x9f, 0x00, 0xa6, 0x02, 0x88, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x28, 0x00, 0x08, 0xa0, 0x80, 0xa0, 0x80, 0x00, 0x80, 0x80, 0x00, 0x0a, 0x88, 0x80, 0x00, 0x80, 0x00, 0x20, 0x2a, 0x00, 0x80, }; static const uint16_t unicode_comp_table[965] = { 0x4a01, 0x49c0, 0x4a02, 0x0280, 0x0281, 0x0282, 0x0283, 0x02c0, 0x02c2, 0x0a00, 0x0284, 0x2442, 0x0285, 0x07c0, 0x0980, 0x0982, 0x2440, 0x2280, 0x02c4, 0x2282, 0x2284, 0x2286, 0x02c6, 0x02c8, 0x02ca, 0x02cc, 0x0287, 0x228a, 0x02ce, 0x228c, 0x2290, 0x2292, 0x228e, 0x0288, 0x0289, 0x028a, 0x2482, 0x0300, 0x0302, 0x0304, 0x028b, 0x2480, 0x0308, 0x0984, 0x0986, 0x2458, 0x0a02, 0x0306, 0x2298, 0x229a, 0x229e, 0x0900, 0x030a, 0x22a0, 0x030c, 0x030e, 0x0840, 0x0310, 0x0312, 0x22a2, 0x22a6, 0x09c0, 0x22a4, 0x22a8, 0x22aa, 0x028c, 0x028d, 0x028e, 0x0340, 0x0342, 0x0344, 0x0380, 0x028f, 0x248e, 0x07c2, 0x0988, 0x098a, 0x2490, 0x0346, 0x22ac, 0x0400, 0x22b0, 0x0842, 0x22b2, 0x0402, 0x22b4, 0x0440, 0x0444, 0x22b6, 0x0442, 0x22c2, 0x22c0, 0x22c4, 0x22c6, 0x22c8, 0x0940, 0x04c0, 0x0291, 0x22ca, 0x04c4, 0x22cc, 0x04c2, 0x22d0, 0x22ce, 0x0292, 0x0293, 0x0294, 0x0295, 0x0540, 0x0542, 0x0a08, 0x0296, 0x2494, 0x0544, 0x07c4, 0x098c, 0x098e, 0x06c0, 0x2492, 0x0844, 0x2308, 0x230a, 0x0580, 0x230c, 0x0584, 0x0990, 0x0992, 0x230e, 0x0582, 0x2312, 0x0586, 0x0588, 0x2314, 0x058c, 0x2316, 0x0998, 0x058a, 0x231e, 0x0590, 0x2320, 0x099a, 0x058e, 0x2324, 0x2322, 0x0299, 0x029a, 0x029b, 0x05c0, 0x05c2, 0x05c4, 0x029c, 0x24ac, 0x05c6, 0x05c8, 0x07c6, 0x0994, 0x0996, 0x0700, 0x24aa, 0x2326, 0x05ca, 0x232a, 0x2328, 0x2340, 0x2342, 0x2344, 0x2346, 0x05cc, 0x234a, 0x2348, 0x234c, 0x234e, 0x2350, 0x24b8, 0x029d, 0x05ce, 0x24be, 0x0a0c, 0x2352, 0x0600, 0x24bc, 0x24ba, 0x0640, 0x2354, 0x0642, 0x0644, 0x2356, 0x2358, 0x02a0, 0x02a1, 0x02a2, 0x02a3, 0x02c1, 0x02c3, 0x0a01, 0x02a4, 0x2443, 0x02a5, 0x07c1, 0x0981, 0x0983, 0x2441, 0x2281, 0x02c5, 0x2283, 0x2285, 0x2287, 0x02c7, 0x02c9, 0x02cb, 0x02cd, 0x02a7, 0x228b, 0x02cf, 0x228d, 0x2291, 0x2293, 0x228f, 0x02a8, 0x02a9, 0x02aa, 0x2483, 0x0301, 0x0303, 0x0305, 0x02ab, 0x2481, 0x0309, 0x0985, 0x0987, 0x2459, 0x0a03, 0x0307, 0x2299, 0x229b, 0x229f, 0x0901, 0x030b, 0x22a1, 0x030d, 0x030f, 0x0841, 0x0311, 0x0313, 0x22a3, 0x22a7, 0x09c1, 0x22a5, 0x22a9, 0x22ab, 0x2380, 0x02ac, 0x02ad, 0x02ae, 0x0341, 0x0343, 0x0345, 0x02af, 0x248f, 0x07c3, 0x0989, 0x098b, 0x2491, 0x0347, 0x22ad, 0x0401, 0x0884, 0x22b1, 0x0843, 0x22b3, 0x0403, 0x22b5, 0x0441, 0x0445, 0x22b7, 0x0443, 0x22c3, 0x22c1, 0x22c5, 0x22c7, 0x22c9, 0x0941, 0x04c1, 0x02b1, 0x22cb, 0x04c5, 0x22cd, 0x04c3, 0x22d1, 0x22cf, 0x02b2, 0x02b3, 0x02b4, 0x02b5, 0x0541, 0x0543, 0x0a09, 0x02b6, 0x2495, 0x0545, 0x07c5, 0x098d, 0x098f, 0x06c1, 0x2493, 0x0845, 0x2309, 0x230b, 0x0581, 0x230d, 0x0585, 0x0991, 0x0993, 0x230f, 0x0583, 0x2313, 0x0587, 0x0589, 0x2315, 0x058d, 0x2317, 0x0999, 0x058b, 0x231f, 0x2381, 0x0591, 0x2321, 0x099b, 0x058f, 0x2325, 0x2323, 0x02b9, 0x02ba, 0x02bb, 0x05c1, 0x05c3, 0x05c5, 0x02bc, 0x24ad, 0x05c7, 0x05c9, 0x07c7, 0x0995, 0x0997, 0x0701, 0x24ab, 0x2327, 0x05cb, 0x232b, 0x2329, 0x2341, 0x2343, 0x2345, 0x2347, 0x05cd, 0x234b, 0x2349, 0x2382, 0x234d, 0x234f, 0x2351, 0x24b9, 0x02bd, 0x05cf, 0x24bf, 0x0a0d, 0x2353, 0x02bf, 0x24bd, 0x2383, 0x24bb, 0x0641, 0x2355, 0x0643, 0x0645, 0x2357, 0x2359, 0x3101, 0x0c80, 0x2e00, 0x2446, 0x2444, 0x244a, 0x2448, 0x0800, 0x0942, 0x0944, 0x0804, 0x2288, 0x2486, 0x2484, 0x248a, 0x2488, 0x22ae, 0x2498, 0x2496, 0x249c, 0x249a, 0x2300, 0x0a06, 0x2302, 0x0a04, 0x0946, 0x07ce, 0x07ca, 0x07c8, 0x07cc, 0x2447, 0x2445, 0x244b, 0x2449, 0x0801, 0x0943, 0x0945, 0x0805, 0x2289, 0x2487, 0x2485, 0x248b, 0x2489, 0x22af, 0x2499, 0x2497, 0x249d, 0x249b, 0x2301, 0x0a07, 0x2303, 0x0a05, 0x0947, 0x07cf, 0x07cb, 0x07c9, 0x07cd, 0x2450, 0x244e, 0x2454, 0x2452, 0x2451, 0x244f, 0x2455, 0x2453, 0x2294, 0x2296, 0x2295, 0x2297, 0x2304, 0x2306, 0x2305, 0x2307, 0x2318, 0x2319, 0x231a, 0x231b, 0x232c, 0x232d, 0x232e, 0x232f, 0x2400, 0x24a2, 0x24a0, 0x24a6, 0x24a4, 0x24a8, 0x24a3, 0x24a1, 0x24a7, 0x24a5, 0x24a9, 0x24b0, 0x24ae, 0x24b4, 0x24b2, 0x24b6, 0x24b1, 0x24af, 0x24b5, 0x24b3, 0x24b7, 0x0882, 0x0880, 0x0881, 0x0802, 0x0803, 0x229c, 0x229d, 0x0a0a, 0x0a0b, 0x0883, 0x0b40, 0x2c8a, 0x0c81, 0x2c89, 0x2c88, 0x2540, 0x2541, 0x2d00, 0x2e07, 0x0d00, 0x2640, 0x2641, 0x2e80, 0x0d01, 0x26c8, 0x26c9, 0x2f00, 0x2f84, 0x0d02, 0x2f83, 0x2f82, 0x0d40, 0x26d8, 0x26d9, 0x3186, 0x0d04, 0x2740, 0x2741, 0x3100, 0x3086, 0x0d06, 0x3085, 0x3084, 0x0d41, 0x2840, 0x3200, 0x0d07, 0x284f, 0x2850, 0x3280, 0x2c84, 0x2e03, 0x2857, 0x0d42, 0x2c81, 0x2c80, 0x24c0, 0x24c1, 0x2c86, 0x2c83, 0x28c0, 0x0d43, 0x25c0, 0x25c1, 0x2940, 0x0d44, 0x26c0, 0x26c1, 0x2e05, 0x2e02, 0x29c0, 0x0d45, 0x2f05, 0x2f04, 0x0d80, 0x26d0, 0x26d1, 0x2f80, 0x2a40, 0x0d82, 0x26e0, 0x26e1, 0x3080, 0x3081, 0x2ac0, 0x0d83, 0x3004, 0x3003, 0x0d81, 0x27c0, 0x27c1, 0x3082, 0x2b40, 0x0d84, 0x2847, 0x2848, 0x3184, 0x3181, 0x2f06, 0x0d08, 0x2f81, 0x3005, 0x0d46, 0x3083, 0x3182, 0x0e00, 0x0e01, 0x0f40, 0x1180, 0x1182, 0x0f03, 0x0f00, 0x11c0, 0x0f01, 0x1140, 0x1202, 0x1204, 0x0f81, 0x1240, 0x0fc0, 0x1242, 0x0f80, 0x1244, 0x1284, 0x0f82, 0x1286, 0x1288, 0x128a, 0x12c0, 0x1282, 0x1181, 0x1183, 0x1043, 0x1040, 0x11c1, 0x1041, 0x1141, 0x1203, 0x1205, 0x10c1, 0x1241, 0x1000, 0x1243, 0x10c0, 0x1245, 0x1285, 0x10c2, 0x1287, 0x1289, 0x128b, 0x12c1, 0x1283, 0x1080, 0x1100, 0x1101, 0x1200, 0x1201, 0x1280, 0x1281, 0x1340, 0x1341, 0x1343, 0x1342, 0x1344, 0x13c2, 0x1400, 0x13c0, 0x1440, 0x1480, 0x14c0, 0x1540, 0x1541, 0x1740, 0x1700, 0x1741, 0x17c0, 0x1800, 0x1802, 0x1801, 0x1840, 0x1880, 0x1900, 0x18c0, 0x18c1, 0x1901, 0x1940, 0x1942, 0x1941, 0x1980, 0x19c0, 0x19c2, 0x19c1, 0x1c80, 0x1cc0, 0x1dc0, 0x1f80, 0x2000, 0x2002, 0x2004, 0x2006, 0x2008, 0x2040, 0x2080, 0x2082, 0x20c0, 0x20c1, 0x2100, 0x22b8, 0x22b9, 0x2310, 0x2311, 0x231c, 0x231d, 0x244c, 0x2456, 0x244d, 0x2457, 0x248c, 0x248d, 0x249e, 0x249f, 0x2500, 0x2502, 0x2504, 0x2bc0, 0x2501, 0x2503, 0x2505, 0x2bc1, 0x2bc2, 0x2bc3, 0x2bc4, 0x2bc5, 0x2bc6, 0x2bc7, 0x2580, 0x2582, 0x2584, 0x2bc8, 0x2581, 0x2583, 0x2585, 0x2bc9, 0x2bca, 0x2bcb, 0x2bcc, 0x2bcd, 0x2bce, 0x2bcf, 0x2600, 0x2602, 0x2601, 0x2603, 0x2680, 0x2682, 0x2681, 0x2683, 0x26c2, 0x26c4, 0x26c6, 0x2c00, 0x26c3, 0x26c5, 0x26c7, 0x2c01, 0x2c02, 0x2c03, 0x2c04, 0x2c05, 0x2c06, 0x2c07, 0x26ca, 0x26cc, 0x26ce, 0x2c08, 0x26cb, 0x26cd, 0x26cf, 0x2c09, 0x2c0a, 0x2c0b, 0x2c0c, 0x2c0d, 0x2c0e, 0x2c0f, 0x26d2, 0x26d4, 0x26d6, 0x26d3, 0x26d5, 0x26d7, 0x26da, 0x26dc, 0x26de, 0x26db, 0x26dd, 0x26df, 0x2700, 0x2702, 0x2701, 0x2703, 0x2780, 0x2782, 0x2781, 0x2783, 0x2800, 0x2802, 0x2804, 0x2801, 0x2803, 0x2805, 0x2842, 0x2844, 0x2846, 0x2849, 0x284b, 0x284d, 0x2c40, 0x284a, 0x284c, 0x284e, 0x2c41, 0x2c42, 0x2c43, 0x2c44, 0x2c45, 0x2c46, 0x2c47, 0x2851, 0x2853, 0x2855, 0x2c48, 0x2852, 0x2854, 0x2856, 0x2c49, 0x2c4a, 0x2c4b, 0x2c4c, 0x2c4d, 0x2c4e, 0x2c4f, 0x2c82, 0x2e01, 0x3180, 0x2c87, 0x2f01, 0x2f02, 0x2f03, 0x2e06, 0x3185, 0x3000, 0x3001, 0x3002, 0x4640, 0x4641, 0x4680, 0x46c0, 0x46c2, 0x46c1, 0x4700, 0x4740, 0x4780, 0x47c0, 0x47c2, 0x4900, 0x4940, 0x4980, 0x4982, 0x4a00, 0x49c2, 0x4a03, 0x4a04, 0x4a40, 0x4a41, 0x4a80, 0x4a81, 0x4ac0, 0x4ac1, 0x4bc0, 0x4bc1, 0x4b00, 0x4b01, 0x4b40, 0x4b41, 0x4bc2, 0x4bc3, 0x4b80, 0x4b81, 0x4b82, 0x4b83, 0x4c00, 0x4c01, 0x4c02, 0x4c03, 0x5600, 0x5440, 0x5442, 0x5444, 0x5446, 0x5448, 0x544a, 0x544c, 0x544e, 0x5450, 0x5452, 0x5454, 0x5456, 0x5480, 0x5482, 0x5484, 0x54c0, 0x54c1, 0x5500, 0x5501, 0x5540, 0x5541, 0x5580, 0x5581, 0x55c0, 0x55c1, 0x5680, 0x58c0, 0x5700, 0x5702, 0x5704, 0x5706, 0x5708, 0x570a, 0x570c, 0x570e, 0x5710, 0x5712, 0x5714, 0x5716, 0x5740, 0x5742, 0x5744, 0x5780, 0x5781, 0x57c0, 0x57c1, 0x5800, 0x5801, 0x5840, 0x5841, 0x5880, 0x5881, 0x5900, 0x5901, 0x5902, 0x5903, 0x5940, 0x8ec0, 0x8f00, 0x8fc0, 0x8fc2, 0x9000, 0x9040, 0x9041, 0x9080, 0x9081, 0x90c0, 0x90c2, 0x9100, 0x9140, 0x9182, 0x9180, 0x9183, 0x91c1, 0x91c0, 0x91c3, 0x9200, 0x9201, 0x9240, 0x9280, 0x9282, 0x9284, 0x9281, 0x9285, 0x9287, 0x9286, 0x9283, 0x92c1, 0x92c0, 0x92c2, }; typedef enum { UNICODE_GC_Cn, UNICODE_GC_Lu, UNICODE_GC_Ll, UNICODE_GC_Lt, UNICODE_GC_Lm, UNICODE_GC_Lo, UNICODE_GC_Mn, UNICODE_GC_Mc, UNICODE_GC_Me, UNICODE_GC_Nd, UNICODE_GC_Nl, UNICODE_GC_No, UNICODE_GC_Sm, UNICODE_GC_Sc, UNICODE_GC_Sk, UNICODE_GC_So, UNICODE_GC_Pc, UNICODE_GC_Pd, UNICODE_GC_Ps, UNICODE_GC_Pe, UNICODE_GC_Pi, UNICODE_GC_Pf, UNICODE_GC_Po, UNICODE_GC_Zs, UNICODE_GC_Zl, UNICODE_GC_Zp, UNICODE_GC_Cc, UNICODE_GC_Cf, UNICODE_GC_Cs, UNICODE_GC_Co, UNICODE_GC_LC, UNICODE_GC_L, UNICODE_GC_M, UNICODE_GC_N, UNICODE_GC_S, UNICODE_GC_P, UNICODE_GC_Z, UNICODE_GC_C, UNICODE_GC_COUNT, } UnicodeGCEnum; static const char unicode_gc_name_table[] = "Cn,Unassigned" "\0" "Lu,Uppercase_Letter" "\0" "Ll,Lowercase_Letter" "\0" "Lt,Titlecase_Letter" "\0" "Lm,Modifier_Letter" "\0" "Lo,Other_Letter" "\0" "Mn,Nonspacing_Mark" "\0" "Mc,Spacing_Mark" "\0" "Me,Enclosing_Mark" "\0" "Nd,Decimal_Number,digit" "\0" "Nl,Letter_Number" "\0" "No,Other_Number" "\0" "Sm,Math_Symbol" "\0" "Sc,Currency_Symbol" "\0" "Sk,Modifier_Symbol" "\0" "So,Other_Symbol" "\0" "Pc,Connector_Punctuation" "\0" "Pd,Dash_Punctuation" "\0" "Ps,Open_Punctuation" "\0" "Pe,Close_Punctuation" "\0" "Pi,Initial_Punctuation" "\0" "Pf,Final_Punctuation" "\0" "Po,Other_Punctuation" "\0" "Zs,Space_Separator" "\0" "Zl,Line_Separator" "\0" "Zp,Paragraph_Separator" "\0" "Cc,Control,cntrl" "\0" "Cf,Format" "\0" "Cs,Surrogate" "\0" "Co,Private_Use" "\0" "LC,Cased_Letter" "\0" "L,Letter" "\0" "M,Mark,Combining_Mark" "\0" "N,Number" "\0" "S,Symbol" "\0" "P,Punctuation,punct" "\0" "Z,Separator" "\0" "C,Other" "\0" ; static const uint8_t unicode_gc_table[4070] = { 0xfa, 0x18, 0x17, 0x56, 0x0d, 0x56, 0x12, 0x13, 0x16, 0x0c, 0x16, 0x11, 0x36, 0xe9, 0x02, 0x36, 0x4c, 0x36, 0xe1, 0x12, 0x12, 0x16, 0x13, 0x0e, 0x10, 0x0e, 0xe2, 0x12, 0x12, 0x0c, 0x13, 0x0c, 0xfa, 0x19, 0x17, 0x16, 0x6d, 0x0f, 0x16, 0x0e, 0x0f, 0x05, 0x14, 0x0c, 0x1b, 0x0f, 0x0e, 0x0f, 0x0c, 0x2b, 0x0e, 0x02, 0x36, 0x0e, 0x0b, 0x05, 0x15, 0x4b, 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0xe0, 0xca, 0x9b, 0xc9, 0x1b, 0xe0, 0x16, 0xfb, 0x58, 0xe0, 0x78, 0xe6, 0x80, 0x68, 0xe0, 0xc0, 0xbd, 0x88, 0xfd, 0xc0, 0xbf, 0x76, 0x20, 0xfd, 0xc0, 0xbf, 0x76, 0x20, }; typedef enum { UNICODE_SCRIPT_Unknown, UNICODE_SCRIPT_Adlam, UNICODE_SCRIPT_Ahom, UNICODE_SCRIPT_Anatolian_Hieroglyphs, UNICODE_SCRIPT_Arabic, UNICODE_SCRIPT_Armenian, UNICODE_SCRIPT_Avestan, UNICODE_SCRIPT_Balinese, UNICODE_SCRIPT_Bamum, UNICODE_SCRIPT_Bassa_Vah, UNICODE_SCRIPT_Batak, UNICODE_SCRIPT_Bengali, UNICODE_SCRIPT_Bhaiksuki, UNICODE_SCRIPT_Bopomofo, UNICODE_SCRIPT_Brahmi, UNICODE_SCRIPT_Braille, UNICODE_SCRIPT_Buginese, UNICODE_SCRIPT_Buhid, UNICODE_SCRIPT_Canadian_Aboriginal, UNICODE_SCRIPT_Carian, UNICODE_SCRIPT_Caucasian_Albanian, UNICODE_SCRIPT_Chakma, UNICODE_SCRIPT_Cham, UNICODE_SCRIPT_Cherokee, UNICODE_SCRIPT_Chorasmian, UNICODE_SCRIPT_Common, UNICODE_SCRIPT_Coptic, UNICODE_SCRIPT_Cuneiform, UNICODE_SCRIPT_Cypriot, UNICODE_SCRIPT_Cyrillic, UNICODE_SCRIPT_Cypro_Minoan, UNICODE_SCRIPT_Deseret, UNICODE_SCRIPT_Devanagari, UNICODE_SCRIPT_Dives_Akuru, UNICODE_SCRIPT_Dogra, UNICODE_SCRIPT_Duployan, UNICODE_SCRIPT_Egyptian_Hieroglyphs, UNICODE_SCRIPT_Elbasan, UNICODE_SCRIPT_Elymaic, UNICODE_SCRIPT_Ethiopic, UNICODE_SCRIPT_Georgian, UNICODE_SCRIPT_Glagolitic, UNICODE_SCRIPT_Gothic, UNICODE_SCRIPT_Garay, UNICODE_SCRIPT_Grantha, UNICODE_SCRIPT_Greek, UNICODE_SCRIPT_Gujarati, UNICODE_SCRIPT_Gunjala_Gondi, UNICODE_SCRIPT_Gurmukhi, UNICODE_SCRIPT_Gurung_Khema, UNICODE_SCRIPT_Han, UNICODE_SCRIPT_Hangul, UNICODE_SCRIPT_Hanifi_Rohingya, UNICODE_SCRIPT_Hanunoo, UNICODE_SCRIPT_Hatran, UNICODE_SCRIPT_Hebrew, UNICODE_SCRIPT_Hiragana, UNICODE_SCRIPT_Imperial_Aramaic, UNICODE_SCRIPT_Inherited, UNICODE_SCRIPT_Inscriptional_Pahlavi, UNICODE_SCRIPT_Inscriptional_Parthian, UNICODE_SCRIPT_Javanese, UNICODE_SCRIPT_Kaithi, UNICODE_SCRIPT_Kannada, UNICODE_SCRIPT_Katakana, UNICODE_SCRIPT_Kawi, UNICODE_SCRIPT_Kayah_Li, UNICODE_SCRIPT_Kharoshthi, UNICODE_SCRIPT_Khmer, UNICODE_SCRIPT_Khojki, UNICODE_SCRIPT_Khitan_Small_Script, UNICODE_SCRIPT_Khudawadi, UNICODE_SCRIPT_Kirat_Rai, UNICODE_SCRIPT_Lao, UNICODE_SCRIPT_Latin, UNICODE_SCRIPT_Lepcha, UNICODE_SCRIPT_Limbu, UNICODE_SCRIPT_Linear_A, UNICODE_SCRIPT_Linear_B, UNICODE_SCRIPT_Lisu, UNICODE_SCRIPT_Lycian, UNICODE_SCRIPT_Lydian, UNICODE_SCRIPT_Makasar, UNICODE_SCRIPT_Mahajani, UNICODE_SCRIPT_Malayalam, UNICODE_SCRIPT_Mandaic, UNICODE_SCRIPT_Manichaean, UNICODE_SCRIPT_Marchen, UNICODE_SCRIPT_Masaram_Gondi, UNICODE_SCRIPT_Medefaidrin, UNICODE_SCRIPT_Meetei_Mayek, UNICODE_SCRIPT_Mende_Kikakui, UNICODE_SCRIPT_Meroitic_Cursive, UNICODE_SCRIPT_Meroitic_Hieroglyphs, UNICODE_SCRIPT_Miao, UNICODE_SCRIPT_Modi, UNICODE_SCRIPT_Mongolian, UNICODE_SCRIPT_Mro, UNICODE_SCRIPT_Multani, UNICODE_SCRIPT_Myanmar, UNICODE_SCRIPT_Nabataean, UNICODE_SCRIPT_Nag_Mundari, UNICODE_SCRIPT_Nandinagari, UNICODE_SCRIPT_New_Tai_Lue, UNICODE_SCRIPT_Newa, UNICODE_SCRIPT_Nko, UNICODE_SCRIPT_Nushu, UNICODE_SCRIPT_Nyiakeng_Puachue_Hmong, UNICODE_SCRIPT_Ogham, UNICODE_SCRIPT_Ol_Chiki, UNICODE_SCRIPT_Ol_Onal, UNICODE_SCRIPT_Old_Hungarian, UNICODE_SCRIPT_Old_Italic, UNICODE_SCRIPT_Old_North_Arabian, UNICODE_SCRIPT_Old_Permic, UNICODE_SCRIPT_Old_Persian, UNICODE_SCRIPT_Old_Sogdian, UNICODE_SCRIPT_Old_South_Arabian, UNICODE_SCRIPT_Old_Turkic, UNICODE_SCRIPT_Old_Uyghur, UNICODE_SCRIPT_Oriya, UNICODE_SCRIPT_Osage, UNICODE_SCRIPT_Osmanya, UNICODE_SCRIPT_Pahawh_Hmong, UNICODE_SCRIPT_Palmyrene, UNICODE_SCRIPT_Pau_Cin_Hau, UNICODE_SCRIPT_Phags_Pa, UNICODE_SCRIPT_Phoenician, UNICODE_SCRIPT_Psalter_Pahlavi, UNICODE_SCRIPT_Rejang, UNICODE_SCRIPT_Runic, UNICODE_SCRIPT_Samaritan, UNICODE_SCRIPT_Saurashtra, UNICODE_SCRIPT_Sharada, UNICODE_SCRIPT_Shavian, UNICODE_SCRIPT_Siddham, UNICODE_SCRIPT_SignWriting, UNICODE_SCRIPT_Sinhala, UNICODE_SCRIPT_Sogdian, UNICODE_SCRIPT_Sora_Sompeng, UNICODE_SCRIPT_Soyombo, UNICODE_SCRIPT_Sundanese, UNICODE_SCRIPT_Sunuwar, UNICODE_SCRIPT_Syloti_Nagri, UNICODE_SCRIPT_Syriac, UNICODE_SCRIPT_Tagalog, UNICODE_SCRIPT_Tagbanwa, UNICODE_SCRIPT_Tai_Le, UNICODE_SCRIPT_Tai_Tham, UNICODE_SCRIPT_Tai_Viet, UNICODE_SCRIPT_Takri, UNICODE_SCRIPT_Tamil, UNICODE_SCRIPT_Tangut, UNICODE_SCRIPT_Telugu, UNICODE_SCRIPT_Thaana, UNICODE_SCRIPT_Thai, UNICODE_SCRIPT_Tibetan, UNICODE_SCRIPT_Tifinagh, UNICODE_SCRIPT_Tirhuta, UNICODE_SCRIPT_Tangsa, UNICODE_SCRIPT_Todhri, UNICODE_SCRIPT_Toto, UNICODE_SCRIPT_Tulu_Tigalari, UNICODE_SCRIPT_Ugaritic, UNICODE_SCRIPT_Vai, UNICODE_SCRIPT_Vithkuqi, UNICODE_SCRIPT_Wancho, UNICODE_SCRIPT_Warang_Citi, UNICODE_SCRIPT_Yezidi, UNICODE_SCRIPT_Yi, UNICODE_SCRIPT_Zanabazar_Square, UNICODE_SCRIPT_COUNT, } UnicodeScriptEnum; static const char unicode_script_name_table[] = "Adlam,Adlm" "\0" "Ahom,Ahom" "\0" "Anatolian_Hieroglyphs,Hluw" "\0" "Arabic,Arab" "\0" "Armenian,Armn" "\0" "Avestan,Avst" "\0" "Balinese,Bali" "\0" "Bamum,Bamu" "\0" "Bassa_Vah,Bass" "\0" "Batak,Batk" "\0" "Bengali,Beng" "\0" "Bhaiksuki,Bhks" "\0" "Bopomofo,Bopo" "\0" "Brahmi,Brah" "\0" "Braille,Brai" "\0" "Buginese,Bugi" "\0" "Buhid,Buhd" "\0" "Canadian_Aboriginal,Cans" "\0" "Carian,Cari" "\0" "Caucasian_Albanian,Aghb" "\0" "Chakma,Cakm" "\0" "Cham,Cham" "\0" "Cherokee,Cher" "\0" "Chorasmian,Chrs" "\0" "Common,Zyyy" "\0" "Coptic,Copt,Qaac" "\0" "Cuneiform,Xsux" "\0" "Cypriot,Cprt" "\0" "Cyrillic,Cyrl" "\0" "Cypro_Minoan,Cpmn" "\0" "Deseret,Dsrt" "\0" "Devanagari,Deva" "\0" "Dives_Akuru,Diak" "\0" "Dogra,Dogr" "\0" "Duployan,Dupl" "\0" "Egyptian_Hieroglyphs,Egyp" "\0" "Elbasan,Elba" "\0" "Elymaic,Elym" "\0" "Ethiopic,Ethi" "\0" "Georgian,Geor" "\0" "Glagolitic,Glag" "\0" "Gothic,Goth" "\0" "Garay,Gara" "\0" "Grantha,Gran" "\0" "Greek,Grek" "\0" "Gujarati,Gujr" "\0" "Gunjala_Gondi,Gong" "\0" "Gurmukhi,Guru" "\0" "Gurung_Khema,Gukh" "\0" "Han,Hani" "\0" "Hangul,Hang" "\0" "Hanifi_Rohingya,Rohg" "\0" "Hanunoo,Hano" "\0" "Hatran,Hatr" "\0" "Hebrew,Hebr" "\0" "Hiragana,Hira" "\0" "Imperial_Aramaic,Armi" "\0" "Inherited,Zinh,Qaai" "\0" "Inscriptional_Pahlavi,Phli" "\0" "Inscriptional_Parthian,Prti" "\0" "Javanese,Java" "\0" "Kaithi,Kthi" "\0" "Kannada,Knda" "\0" "Katakana,Kana" "\0" "Kawi,Kawi" "\0" "Kayah_Li,Kali" "\0" "Kharoshthi,Khar" "\0" "Khmer,Khmr" "\0" "Khojki,Khoj" "\0" "Khitan_Small_Script,Kits" "\0" "Khudawadi,Sind" "\0" "Kirat_Rai,Krai" "\0" "Lao,Laoo" "\0" "Latin,Latn" "\0" "Lepcha,Lepc" "\0" "Limbu,Limb" "\0" "Linear_A,Lina" "\0" "Linear_B,Linb" "\0" "Lisu,Lisu" "\0" "Lycian,Lyci" "\0" "Lydian,Lydi" "\0" "Makasar,Maka" "\0" "Mahajani,Mahj" "\0" "Malayalam,Mlym" "\0" "Mandaic,Mand" "\0" "Manichaean,Mani" "\0" "Marchen,Marc" "\0" "Masaram_Gondi,Gonm" "\0" "Medefaidrin,Medf" "\0" "Meetei_Mayek,Mtei" "\0" "Mende_Kikakui,Mend" "\0" "Meroitic_Cursive,Merc" "\0" "Meroitic_Hieroglyphs,Mero" "\0" "Miao,Plrd" "\0" "Modi,Modi" "\0" "Mongolian,Mong" "\0" "Mro,Mroo" "\0" "Multani,Mult" "\0" "Myanmar,Mymr" "\0" "Nabataean,Nbat" "\0" "Nag_Mundari,Nagm" "\0" "Nandinagari,Nand" "\0" "New_Tai_Lue,Talu" "\0" "Newa,Newa" "\0" "Nko,Nkoo" "\0" "Nushu,Nshu" "\0" "Nyiakeng_Puachue_Hmong,Hmnp" "\0" "Ogham,Ogam" "\0" "Ol_Chiki,Olck" "\0" "Ol_Onal,Onao" "\0" "Old_Hungarian,Hung" "\0" "Old_Italic,Ital" "\0" "Old_North_Arabian,Narb" "\0" "Old_Permic,Perm" "\0" "Old_Persian,Xpeo" "\0" "Old_Sogdian,Sogo" "\0" "Old_South_Arabian,Sarb" "\0" "Old_Turkic,Orkh" "\0" "Old_Uyghur,Ougr" "\0" "Oriya,Orya" "\0" "Osage,Osge" "\0" "Osmanya,Osma" "\0" "Pahawh_Hmong,Hmng" "\0" "Palmyrene,Palm" "\0" "Pau_Cin_Hau,Pauc" "\0" "Phags_Pa,Phag" "\0" "Phoenician,Phnx" "\0" "Psalter_Pahlavi,Phlp" "\0" "Rejang,Rjng" "\0" "Runic,Runr" "\0" "Samaritan,Samr" "\0" "Saurashtra,Saur" "\0" "Sharada,Shrd" "\0" "Shavian,Shaw" "\0" "Siddham,Sidd" "\0" "SignWriting,Sgnw" "\0" "Sinhala,Sinh" "\0" "Sogdian,Sogd" "\0" "Sora_Sompeng,Sora" "\0" "Soyombo,Soyo" "\0" "Sundanese,Sund" "\0" "Sunuwar,Sunu" "\0" "Syloti_Nagri,Sylo" "\0" "Syriac,Syrc" "\0" "Tagalog,Tglg" "\0" "Tagbanwa,Tagb" "\0" "Tai_Le,Tale" "\0" "Tai_Tham,Lana" "\0" "Tai_Viet,Tavt" "\0" "Takri,Takr" "\0" "Tamil,Taml" "\0" "Tangut,Tang" "\0" "Telugu,Telu" "\0" "Thaana,Thaa" "\0" "Thai,Thai" "\0" "Tibetan,Tibt" "\0" "Tifinagh,Tfng" "\0" "Tirhuta,Tirh" "\0" "Tangsa,Tnsa" "\0" "Todhri,Todr" "\0" "Toto,Toto" "\0" "Tulu_Tigalari,Tutg" "\0" "Ugaritic,Ugar" "\0" "Vai,Vaii" "\0" "Vithkuqi,Vith" "\0" "Wancho,Wcho" "\0" "Warang_Citi,Wara" "\0" "Yezidi,Yezi" "\0" "Yi,Yiii" "\0" "Zanabazar_Square,Zanb" "\0" ; static const uint8_t unicode_script_table[2803] = { 0xc0, 0x19, 0x99, 0x4a, 0x85, 0x19, 0x99, 0x4a, 0xae, 0x19, 0x80, 0x4a, 0x8e, 0x19, 0x80, 0x4a, 0x84, 0x19, 0x96, 0x4a, 0x80, 0x19, 0x9e, 0x4a, 0x80, 0x19, 0xe1, 0x60, 0x4a, 0xa6, 0x19, 0x84, 0x4a, 0x84, 0x19, 0x81, 0x0d, 0x93, 0x19, 0xe0, 0x0f, 0x3a, 0x83, 0x2d, 0x80, 0x19, 0x82, 0x2d, 0x01, 0x83, 0x2d, 0x80, 0x19, 0x80, 0x2d, 0x03, 0x80, 0x2d, 0x80, 0x19, 0x80, 0x2d, 0x80, 0x19, 0x82, 0x2d, 0x00, 0x80, 0x2d, 0x00, 0x93, 0x2d, 0x00, 0xbe, 0x2d, 0x8d, 0x1a, 0x8f, 0x2d, 0xe0, 0x24, 0x1d, 0x81, 0x3a, 0xe0, 0x48, 0x1d, 0x00, 0xa5, 0x05, 0x01, 0xb1, 0x05, 0x01, 0x82, 0x05, 0x00, 0xb6, 0x37, 0x07, 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0x32, 0x05, 0xe0, 0x7d, 0x32, 0x01, 0xf0, 0x06, 0x21, 0x32, 0x0d, 0xf0, 0x0c, 0xd0, 0x32, 0x0e, 0xe2, 0x0d, 0x32, 0x69, 0x41, 0xe1, 0xbd, 0x32, 0x65, 0x81, 0xf0, 0x02, 0xea, 0x32, 0x04, 0xef, 0xff, 0x32, 0x7a, 0xcb, 0xf0, 0x80, 0x19, 0x1d, 0xdf, 0x19, 0x60, 0x1f, 0xe0, 0x8f, 0x3a, }; static const uint8_t unicode_script_ext_table[1253] = { 0x80, 0x36, 0x00, 0x00, 0x10, 0x06, 0x13, 0x1a, 0x23, 0x25, 0x28, 0x29, 0x2f, 0x2a, 0x2d, 0x32, 0x4a, 0x51, 0x53, 0x72, 0x86, 0x81, 0x83, 0x00, 0x00, 0x07, 0x0b, 0x1d, 0x20, 0x4a, 0x4f, 0x9b, 0xa1, 0x09, 0x00, 0x00, 0x02, 0x0d, 0x4a, 0x00, 0x00, 0x02, 0x02, 0x0d, 0x4a, 0x00, 0x00, 0x00, 0x02, 0x4a, 0x4f, 0x08, 0x00, 0x00, 0x02, 0x4a, 0x9b, 0x00, 0x00, 0x00, 0x02, 0x0d, 0x4a, 0x25, 0x00, 0x00, 0x08, 0x17, 0x1a, 0x1d, 0x2d, 0x4a, 0x72, 0x8e, 0x93, 0x00, 0x08, 0x17, 0x1d, 0x2d, 0x4a, 0x79, 0x8e, 0x93, 0xa0, 0x00, 0x04, 0x17, 0x1d, 0x4a, 0x9d, 0x00, 0x05, 0x29, 0x4a, 0x8e, 0x90, 0x9b, 0x00, 0x0b, 0x14, 0x17, 0x1a, 0x1d, 0x2a, 0x2d, 0x4a, 0x79, 0x90, 0x9d, 0xa0, 0x00, 0x06, 0x1a, 0x25, 0x29, 0x2a, 0x40, 0x4a, 0x00, 0x04, 0x1d, 0x2d, 0x4a, 0x72, 0x00, 0x09, 0x1a, 0x23, 0x37, 0x4a, 0x72, 0x90, 0x93, 0x9d, 0xa0, 0x00, 0x0a, 0x05, 0x1d, 0x23, 0x2a, 0x2d, 0x37, 0x4a, 0x72, 0x90, 0x93, 0x00, 0x02, 0x4a, 0x9d, 0x00, 0x03, 0x23, 0x4a, 0x90, 0x00, 0x04, 0x17, 0x1d, 0x4a, 0x79, 0x00, 0x03, 0x17, 0x4a, 0x93, 0x00, 0x02, 0x4a, 0x8e, 0x00, 0x02, 0x27, 0x4a, 0x00, 0x00, 0x00, 0x02, 0x4a, 0x8e, 0x00, 0x03, 0x1d, 0x4a, 0xa0, 0x00, 0x00, 0x00, 0x04, 0x2d, 0x4a, 0x72, 0xa0, 0x0b, 0x00, 0x00, 0x02, 0x4a, 0x90, 0x01, 0x00, 0x00, 0x05, 0x17, 0x23, 0x40, 0x4a, 0x90, 0x00, 0x04, 0x17, 0x23, 0x4a, 0x90, 0x00, 0x02, 0x4a, 0x90, 0x06, 0x00, 0x00, 0x03, 0x4a, 0x8e, 0x90, 0x00, 0x02, 0x4a, 0x90, 0x00, 0x00, 0x00, 0x03, 0x17, 0x4a, 0x90, 0x00, 0x06, 0x14, 0x17, 0x2a, 0x4a, 0x8e, 0x9b, 0x0f, 0x00, 0x00, 0x01, 0x2d, 0x01, 0x00, 0x00, 0x01, 0x2d, 0x11, 0x00, 0x00, 0x02, 0x4a, 0x79, 0x04, 0x00, 0x00, 0x03, 0x14, 0x4a, 0xa0, 0x03, 0x00, 0x0c, 0x01, 0x4a, 0x03, 0x00, 0x01, 0x02, 0x1a, 0x2d, 0x80, 0x8c, 0x00, 0x00, 0x02, 0x1d, 0x72, 0x00, 0x02, 0x1d, 0x29, 0x01, 0x02, 0x1d, 0x4a, 0x00, 0x02, 0x1d, 0x29, 0x80, 0x80, 0x00, 0x00, 0x03, 0x05, 0x28, 0x29, 0x80, 0x01, 0x00, 0x00, 0x07, 0x04, 0x2b, 0x69, 0x34, 0x90, 0x9a, 0xa8, 0x0d, 0x00, 0x00, 0x07, 0x04, 0x2b, 0x69, 0x34, 0x90, 0x9a, 0xa8, 0x00, 0x03, 0x04, 0x90, 0x9a, 0x01, 0x00, 0x00, 0x08, 0x01, 0x04, 0x2b, 0x69, 0x34, 0x90, 0x9a, 0xa8, 0x1f, 0x00, 0x00, 0x09, 0x01, 0x04, 0x55, 0x56, 0x77, 0x80, 0x34, 0x8a, 0x90, 0x09, 0x00, 0x0a, 0x02, 0x04, 0x90, 0x09, 0x00, 0x09, 0x03, 0x04, 0x9a, 0xa8, 0x05, 0x00, 0x00, 0x02, 0x04, 0x90, 0x62, 0x00, 0x00, 0x02, 0x04, 0x34, 0x81, 0xfb, 0x00, 0x00, 0x0d, 0x0b, 0x20, 0x2c, 0x2e, 0x30, 0x3f, 0x4a, 0x54, 0x78, 0x85, 0x97, 0x99, 0x9e, 0x00, 0x0c, 0x0b, 0x20, 0x2c, 0x2e, 0x30, 0x3f, 0x4a, 0x54, 0x78, 0x97, 0x99, 0x9e, 0x10, 0x00, 0x00, 0x15, 0x0b, 0x20, 0x22, 0x2f, 0x58, 0x2c, 0x2e, 0x30, 0x3f, 0x53, 0x54, 0x66, 0x6e, 0x78, 0x47, 0x89, 0x8f, 0x96, 0x97, 0x99, 0x9e, 0x00, 0x17, 0x0b, 0x20, 0x22, 0x2f, 0x58, 0x2c, 0x2e, 0x31, 0x30, 0x3f, 0x4c, 0x53, 0x54, 0x66, 0x6e, 0x78, 0x47, 0x89, 0x8f, 0x96, 0x97, 0x99, 0x9e, 0x09, 0x04, 0x20, 0x22, 0x3e, 0x53, 0x75, 0x00, 0x09, 0x03, 0x0b, 0x15, 0x8f, 0x75, 0x00, 0x09, 0x02, 0x30, 0x62, 0x75, 0x00, 0x09, 0x02, 0x2e, 0x45, 0x80, 0x75, 0x00, 0x0d, 0x02, 0x2c, 0x97, 0x80, 0x71, 0x00, 0x09, 0x03, 0x3f, 0x66, 0xa2, 0x82, 0xcf, 0x00, 0x09, 0x03, 0x15, 0x63, 0x93, 0x80, 0x30, 0x00, 0x00, 0x03, 0x28, 0x29, 0x4a, 0x85, 0x6e, 0x00, 0x02, 0x01, 0x82, 0x46, 0x00, 0x01, 0x04, 0x11, 0x35, 0x92, 0x91, 0x80, 0x4a, 0x00, 0x01, 0x02, 0x60, 0x7e, 0x00, 0x00, 0x00, 0x02, 0x60, 0x7e, 0x84, 0x49, 0x00, 0x00, 0x04, 0x0b, 0x20, 0x2c, 0x3f, 0x00, 0x01, 0x20, 0x00, 0x04, 0x0b, 0x20, 0x2c, 0x3f, 0x00, 0x03, 0x20, 0x2c, 0x3f, 0x00, 0x01, 0x20, 0x01, 0x02, 0x0b, 0x20, 0x00, 0x02, 0x20, 0x85, 0x00, 0x02, 0x0b, 0x20, 0x00, 0x02, 0x20, 0x85, 0x00, 0x06, 0x20, 0x3f, 0x54, 0x78, 0x97, 0x99, 0x00, 0x01, 0x20, 0x01, 0x02, 0x20, 0x85, 0x01, 0x01, 0x20, 0x00, 0x02, 0x20, 0x85, 0x00, 0x02, 0x0b, 0x20, 0x06, 0x01, 0x20, 0x00, 0x02, 0x20, 0x66, 0x00, 0x02, 0x0b, 0x20, 0x01, 0x01, 0x20, 0x00, 0x02, 0x0b, 0x20, 0x03, 0x01, 0x20, 0x00, 0x0b, 0x0b, 0x20, 0x2c, 0x3f, 0x54, 0x66, 0x78, 0x89, 0x99, 0x9e, 0xa2, 0x00, 0x02, 0x20, 0x2c, 0x00, 0x04, 0x20, 0x2c, 0x3f, 0xa2, 0x01, 0x02, 0x0b, 0x20, 0x00, 0x01, 0x0b, 0x01, 0x02, 0x20, 0x2c, 0x00, 0x01, 0x66, 0x80, 0x44, 0x00, 0x01, 0x01, 0x2d, 0x35, 0x00, 0x00, 0x03, 0x1d, 0x4a, 0x90, 0x00, 0x00, 0x00, 0x01, 0x90, 0x81, 0xb3, 0x00, 0x00, 0x03, 0x4a, 0x60, 0x7e, 0x1e, 0x00, 0x00, 0x02, 0x01, 0x04, 0x09, 0x00, 0x00, 0x06, 0x13, 0x28, 0x29, 0x6f, 0x50, 0x76, 0x01, 0x00, 0x00, 0x04, 0x13, 0x2d, 0x6f, 0x5d, 0x80, 0x11, 0x00, 0x00, 0x03, 0x20, 0x2c, 0x4a, 0x8c, 0xa5, 0x00, 0x00, 0x02, 0x1a, 0x4a, 0x17, 0x00, 0x00, 0x02, 0x06, 0x76, 0x00, 0x07, 0x06, 0x13, 0x28, 0x6f, 0x3e, 0x51, 0x83, 0x09, 0x00, 0x00, 0x01, 0x23, 0x03, 0x00, 0x00, 0x03, 0x01, 0x04, 0x6f, 0x00, 0x00, 0x00, 0x02, 0x1d, 0x29, 0x81, 0x2b, 0x00, 0x0f, 0x02, 0x32, 0x98, 0x00, 0x00, 0x00, 0x07, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x60, 0xa9, 0x00, 0x08, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x60, 0x7e, 0xa9, 0x00, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x01, 0x00, 0x00, 0x01, 0x32, 0x00, 0x00, 0x01, 0x08, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x60, 0x9c, 0xa9, 0x01, 0x09, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x4f, 0x60, 0x9c, 0xa9, 0x05, 0x06, 0x0d, 0x33, 0x32, 0x38, 0x40, 0xa9, 0x00, 0x00, 0x00, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x07, 0x06, 0x0d, 0x33, 0x32, 0x38, 0x40, 0xa9, 0x03, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x09, 0x00, 0x03, 0x02, 0x0d, 0x32, 0x01, 0x00, 0x00, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x04, 0x02, 0x38, 0x40, 0x00, 0x00, 0x00, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x03, 0x00, 0x01, 0x03, 0x32, 0x38, 0x40, 0x01, 0x01, 0x32, 0x58, 0x00, 0x03, 0x02, 0x38, 0x40, 0x02, 0x00, 0x00, 0x02, 0x38, 0x40, 0x59, 0x00, 0x00, 0x06, 0x0d, 0x33, 0x32, 0x38, 0x40, 0xa9, 0x00, 0x02, 0x38, 0x40, 0x80, 0x12, 0x00, 0x0f, 0x01, 0x32, 0x1f, 0x00, 0x25, 0x01, 0x32, 0x08, 0x00, 0x00, 0x02, 0x32, 0x98, 0x2f, 0x00, 0x27, 0x01, 0x32, 0x37, 0x00, 0x30, 0x01, 0x32, 0x0e, 0x00, 0x0b, 0x01, 0x32, 0x32, 0x00, 0x00, 0x01, 0x32, 0x57, 0x00, 0x18, 0x01, 0x32, 0x09, 0x00, 0x04, 0x01, 0x32, 0x5f, 0x00, 0x1e, 0x01, 0x32, 0xc0, 0x31, 0xef, 0x00, 0x00, 0x02, 0x1d, 0x29, 0x80, 0x0f, 0x00, 0x07, 0x02, 0x32, 0x4a, 0x80, 0xa7, 0x00, 0x02, 0x10, 0x20, 0x22, 0x2e, 0x30, 0x45, 0x3f, 0x3e, 0x53, 0x54, 0x5f, 0x66, 0x85, 0x47, 0x96, 0x9e, 0xa2, 0x02, 0x0f, 0x20, 0x22, 0x2e, 0x30, 0x45, 0x3f, 0x3e, 0x53, 0x5f, 0x66, 0x85, 0x47, 0x96, 0x9e, 0xa2, 0x01, 0x0b, 0x20, 0x22, 0x2e, 0x30, 0x45, 0x3e, 0x53, 0x5f, 0x47, 0x96, 0x9e, 0x00, 0x0c, 0x20, 0x22, 0x2e, 0x30, 0x45, 0x3e, 0x53, 0x5f, 0x85, 0x47, 0x96, 0x9e, 0x00, 0x0b, 0x20, 0x22, 0x2e, 0x30, 0x45, 0x3e, 0x53, 0x5f, 0x47, 0x96, 0x9e, 0x80, 0x36, 0x00, 0x00, 0x03, 0x0b, 0x20, 0xa2, 0x00, 0x00, 0x00, 0x02, 0x20, 0x97, 0x39, 0x00, 0x00, 0x03, 0x42, 0x4a, 0x63, 0x80, 0x1f, 0x00, 0x00, 0x02, 0x10, 0x3d, 0xc0, 0x12, 0xed, 0x00, 0x01, 0x02, 0x04, 0x69, 0x80, 0x31, 0x00, 0x00, 0x02, 0x04, 0x9a, 0x09, 0x00, 0x00, 0x02, 0x04, 0x9a, 0x46, 0x00, 0x01, 0x05, 0x0d, 0x33, 0x32, 0x38, 0x40, 0x80, 0x99, 0x00, 0x04, 0x06, 0x0d, 0x33, 0x32, 0x38, 0x40, 0xa9, 0x09, 0x00, 0x00, 0x02, 0x38, 0x40, 0x2c, 0x00, 0x01, 0x02, 0x38, 0x40, 0x80, 0xdf, 0x00, 0x01, 0x03, 0x1e, 0x1c, 0x4e, 0x00, 0x02, 0x1c, 0x4e, 0x03, 0x00, 0x2c, 0x03, 0x1c, 0x4d, 0x4e, 0x02, 0x00, 0x08, 0x02, 0x1c, 0x4e, 0x81, 0x1f, 0x00, 0x1b, 0x02, 0x04, 0x1a, 0x87, 0x75, 0x00, 0x00, 0x02, 0x56, 0x77, 0x87, 0x8d, 0x00, 0x00, 0x02, 0x2c, 0x97, 0x00, 0x00, 0x00, 0x02, 0x2c, 0x97, 0x36, 0x00, 0x01, 0x02, 0x2c, 0x97, 0x8c, 0x12, 0x00, 0x01, 0x02, 0x2c, 0x97, 0x00, 0x00, 0x00, 0x02, 0x2c, 0x97, 0xc0, 0x5c, 0x4b, 0x00, 0x03, 0x01, 0x23, 0x96, 0x3b, 0x00, 0x11, 0x01, 0x32, 0x9e, 0x5d, 0x00, 0x01, 0x01, 0x32, 0xce, 0xcd, 0x2d, 0x00, }; static const uint8_t unicode_prop_Hyphen_table[28] = { 0xac, 0x80, 0xfe, 0x80, 0x44, 0xdb, 0x80, 0x52, 0x7a, 0x80, 0x48, 0x08, 0x81, 0x4e, 0x04, 0x80, 0x42, 0xe2, 0x80, 0x60, 0xcd, 0x66, 0x80, 0x40, 0xa8, 0x80, 0xd6, 0x80, }; static const uint8_t unicode_prop_Other_Math_table[200] = { 0xdd, 0x80, 0x43, 0x70, 0x11, 0x80, 0x99, 0x09, 0x81, 0x5c, 0x1f, 0x80, 0x9a, 0x82, 0x8a, 0x80, 0x9f, 0x83, 0x97, 0x81, 0x8d, 0x81, 0xc0, 0x8c, 0x18, 0x11, 0x1c, 0x91, 0x03, 0x01, 0x89, 0x00, 0x14, 0x28, 0x11, 0x09, 0x02, 0x05, 0x13, 0x24, 0xca, 0x21, 0x18, 0x08, 0x08, 0x00, 0x21, 0x0b, 0x0b, 0x91, 0x09, 0x00, 0x06, 0x00, 0x29, 0x41, 0x21, 0x83, 0x40, 0xa7, 0x08, 0x80, 0x97, 0x80, 0x90, 0x80, 0x41, 0xbc, 0x81, 0x8b, 0x88, 0x24, 0x21, 0x09, 0x14, 0x8d, 0x00, 0x01, 0x85, 0x97, 0x81, 0xb8, 0x00, 0x80, 0x9c, 0x83, 0x88, 0x81, 0x41, 0x55, 0x81, 0x9e, 0x89, 0x41, 0x92, 0x95, 0xbe, 0x83, 0x9f, 0x81, 0x60, 0xd4, 0x62, 0x00, 0x03, 0x80, 0x40, 0xd2, 0x00, 0x80, 0x60, 0xd4, 0xc0, 0xd4, 0x80, 0xc6, 0x01, 0x08, 0x09, 0x0b, 0x80, 0x8b, 0x00, 0x06, 0x80, 0xc0, 0x03, 0x0f, 0x06, 0x80, 0x9b, 0x03, 0x04, 0x00, 0x16, 0x80, 0x41, 0x53, 0x81, 0x98, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x80, 0x9e, 0x80, 0x98, 0x07, 0x81, 0xb1, 0x55, 0xff, 0x18, 0x9a, 0x01, 0x00, 0x08, 0x80, 0x89, 0x03, 0x00, 0x00, 0x28, 0x18, 0x00, 0x00, 0x02, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x0b, 0x06, 0x03, 0x03, 0x00, 0x80, 0x89, 0x80, 0x90, 0x22, 0x04, 0x80, 0x90, }; static const uint8_t unicode_prop_Other_Alphabetic_table[443] = { 0x43, 0x44, 0x80, 0x9c, 0x8c, 0x42, 0x3f, 0x8d, 0x00, 0x01, 0x01, 0x00, 0xc7, 0x8a, 0xaf, 0x8c, 0x06, 0x8f, 0x80, 0xe4, 0x33, 0x19, 0x0b, 0x80, 0xa2, 0x80, 0x9d, 0x8f, 0xe5, 0x8a, 0xe4, 0x0a, 0x88, 0x02, 0x03, 0xe9, 0x80, 0xbb, 0x8b, 0x16, 0x85, 0x93, 0xb5, 0x09, 0x8e, 0x01, 0x22, 0x89, 0x81, 0x9c, 0x82, 0xb9, 0x31, 0x09, 0x81, 0x89, 0x80, 0x89, 0x81, 0x9c, 0x82, 0xb9, 0x23, 0x09, 0x0b, 0x80, 0x9d, 0x0a, 0x80, 0x8a, 0x82, 0xb9, 0x38, 0x10, 0x81, 0x94, 0x81, 0x95, 0x13, 0x82, 0xb9, 0x31, 0x09, 0x81, 0x88, 0x81, 0x89, 0x81, 0x9d, 0x80, 0xba, 0x22, 0x10, 0x82, 0x89, 0x80, 0xa7, 0x84, 0xb8, 0x30, 0x10, 0x17, 0x81, 0x8a, 0x81, 0x9c, 0x82, 0xb9, 0x30, 0x10, 0x17, 0x81, 0x8a, 0x81, 0x8e, 0x80, 0x8b, 0x83, 0xb9, 0x30, 0x10, 0x82, 0x89, 0x80, 0x89, 0x81, 0x9c, 0x82, 0xca, 0x28, 0x00, 0x87, 0x91, 0x81, 0xbc, 0x01, 0x86, 0x91, 0x80, 0xe2, 0x01, 0x28, 0x81, 0x8f, 0x80, 0x40, 0xa2, 0x92, 0x88, 0x8a, 0x80, 0xa3, 0xed, 0x8b, 0x00, 0x0b, 0x96, 0x1b, 0x10, 0x11, 0x32, 0x83, 0x8c, 0x8b, 0x00, 0x89, 0x83, 0x46, 0x73, 0x81, 0x9d, 0x81, 0x9d, 0x81, 0x9d, 0x81, 0xc1, 0x92, 0x40, 0xbb, 0x81, 0xa1, 0x80, 0xf5, 0x8b, 0x83, 0x88, 0x40, 0xdd, 0x84, 0xb8, 0x89, 0x81, 0x93, 0xc9, 0x81, 0x8a, 0x82, 0xb0, 0x84, 0xaf, 0x8e, 0xbb, 0x82, 0x9d, 0x88, 0x09, 0xb8, 0x8a, 0xb1, 0x92, 0x41, 0x9b, 0xa1, 0x46, 0xc0, 0xb3, 0x48, 0xf5, 0x9f, 0x60, 0x78, 0x73, 0x87, 0xa1, 0x81, 0x41, 0x61, 0x07, 0x80, 0x96, 0x84, 0xd7, 0x81, 0xb1, 0x8f, 0x00, 0xb8, 0x80, 0xa5, 0x84, 0x9b, 0x8b, 0xac, 0x83, 0xaf, 0x8b, 0xa4, 0x80, 0xc2, 0x8d, 0x8b, 0x07, 0x81, 0xac, 0x82, 0xb1, 0x00, 0x11, 0x0c, 0x80, 0xab, 0x24, 0x80, 0x40, 0xec, 0x87, 0x60, 0x4f, 0x32, 0x80, 0x48, 0x56, 0x84, 0x46, 0x85, 0x10, 0x0c, 0x83, 0x43, 0x13, 0x83, 0xc0, 0x80, 0x41, 0x40, 0x81, 0xce, 0x80, 0x41, 0x02, 0x82, 0xb4, 0x8d, 0xac, 0x81, 0x8a, 0x82, 0xac, 0x88, 0x88, 0x80, 0xbc, 0x82, 0xa3, 0x8b, 0x91, 0x81, 0xb8, 0x82, 0xaf, 0x8c, 0x8d, 0x81, 0xdb, 0x88, 0x08, 0x28, 0x08, 0x40, 0x9c, 0x89, 0x96, 0x83, 0xb9, 0x31, 0x09, 0x81, 0x89, 0x80, 0x89, 0x81, 0xd3, 0x88, 0x00, 0x08, 0x03, 0x01, 0xe6, 0x8c, 0x02, 0xe9, 0x91, 0x40, 0xec, 0x31, 0x86, 0x9c, 0x81, 0xd1, 0x8e, 0x00, 0xe9, 0x8a, 0xe6, 0x8d, 0x41, 0x00, 0x8c, 0x40, 0xf6, 0x28, 0x09, 0x0a, 0x00, 0x80, 0x40, 0x8d, 0x31, 0x2b, 0x80, 0x9b, 0x89, 0xa9, 0x20, 0x83, 0x91, 0x8a, 0xad, 0x8d, 0x41, 0x96, 0x38, 0x86, 0xd2, 0x95, 0x80, 0x8d, 0xf9, 0x2a, 0x00, 0x08, 0x10, 0x02, 0x80, 0xc1, 0x20, 0x08, 0x83, 0x41, 0x5b, 0x83, 0x88, 0x08, 0x80, 0xaf, 0x32, 0x82, 0x60, 0x41, 0xdc, 0x90, 0x4e, 0x1f, 0x00, 0xb6, 0x33, 0xdc, 0x81, 0x60, 0x4c, 0xab, 0x80, 0x60, 0x23, 0x60, 0x30, 0x90, 0x0e, 0x01, 0x04, 0xe3, 0x80, 0x48, 0xb6, 0x80, 0x47, 0xe7, 0x99, 0x85, 0x99, 0x85, 0x99, }; static const uint8_t unicode_prop_Other_Lowercase_table[69] = { 0x40, 0xa9, 0x80, 0x8e, 0x80, 0x41, 0xf4, 0x88, 0x31, 0x9d, 0x84, 0xdf, 0x80, 0xb3, 0x80, 0x4d, 0x80, 0x80, 0x4c, 0x2e, 0xbe, 0x8c, 0x80, 0xa1, 0xa4, 0x42, 0xb0, 0x80, 0x8c, 0x80, 0x8f, 0x8c, 0x40, 0xd2, 0x8f, 0x43, 0x4f, 0x99, 0x47, 0x91, 0x81, 0x60, 0x7a, 0x1d, 0x81, 0x40, 0xd1, 0x80, 0x40, 0x80, 0x12, 0x81, 0x43, 0x61, 0x83, 0x88, 0x80, 0x60, 0x5c, 0x15, 0x01, 0x10, 0xa9, 0x80, 0x88, 0x60, 0xd8, 0x74, 0xbd, }; static const uint8_t unicode_prop_Other_Uppercase_table[15] = { 0x60, 0x21, 0x5f, 0x8f, 0x43, 0x45, 0x99, 0x61, 0xcc, 0x5f, 0x99, 0x85, 0x99, 0x85, 0x99, }; static const uint8_t unicode_prop_Other_Grapheme_Extend_table[112] = { 0x49, 0xbd, 0x80, 0x97, 0x80, 0x41, 0x65, 0x80, 0x97, 0x80, 0xe5, 0x80, 0x97, 0x80, 0x40, 0xe7, 0x00, 0x03, 0x08, 0x81, 0x88, 0x81, 0xe6, 0x80, 0x97, 0x80, 0xf6, 0x80, 0x8e, 0x80, 0x49, 0x34, 0x80, 0x9d, 0x80, 0x43, 0xff, 0x04, 0x00, 0x04, 0x81, 0xe4, 0x80, 0xc6, 0x81, 0x44, 0x17, 0x80, 0x50, 0x20, 0x81, 0x60, 0x79, 0x22, 0x80, 0xeb, 0x80, 0x60, 0x55, 0xdc, 0x81, 0x52, 0x1f, 0x80, 0xf3, 0x80, 0x41, 0x07, 0x80, 0x8d, 0x80, 0x88, 0x80, 0xdf, 0x80, 0x88, 0x01, 0x00, 0x14, 0x80, 0x40, 0xdf, 0x80, 0x8b, 0x80, 0x40, 0xf0, 0x80, 0x41, 0x05, 0x80, 0x42, 0x78, 0x80, 0x8b, 0x80, 0x46, 0x02, 0x80, 0x60, 0x50, 0xad, 0x81, 0x60, 0x61, 0x72, 0x0d, 0x85, 0x6c, 0x2e, 0xac, 0xdf, }; static const uint8_t unicode_prop_Other_Default_Ignorable_Code_Point_table[32] = { 0x43, 0x4e, 0x80, 0x4e, 0x0e, 0x81, 0x46, 0x52, 0x81, 0x48, 0xae, 0x80, 0x50, 0xfd, 0x80, 0x60, 0xce, 0x3a, 0x80, 0xce, 0x88, 0x6d, 0x00, 0x06, 0x00, 0x9d, 0xdf, 0xff, 0x40, 0xef, 0x4e, 0x0f, }; static const uint8_t unicode_prop_Other_ID_Start_table[11] = { 0x58, 0x84, 0x81, 0x48, 0x90, 0x80, 0x94, 0x80, 0x4f, 0x6b, 0x81, }; static const uint8_t unicode_prop_Other_ID_Continue_table[22] = { 0x40, 0xb6, 0x80, 0x42, 0xce, 0x80, 0x4f, 0xe0, 0x88, 0x46, 0x67, 0x80, 0x46, 0x30, 0x81, 0x50, 0xec, 0x80, 0x60, 0xce, 0x68, 0x80, }; static const uint8_t unicode_prop_Prepended_Concatenation_Mark_table[19] = { 0x45, 0xff, 0x85, 0x40, 0xd6, 0x80, 0xb0, 0x80, 0x41, 0x7f, 0x81, 0xcf, 0x80, 0x61, 0x07, 0xd9, 0x80, 0x8e, 0x80, }; static const uint8_t unicode_prop_XID_Start1_table[31] = { 0x43, 0x79, 0x80, 0x4a, 0xb7, 0x80, 0xfe, 0x80, 0x60, 0x21, 0xe6, 0x81, 0x60, 0xcb, 0xc0, 0x85, 0x41, 0x95, 0x81, 0xf3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x41, 0x1e, 0x81, }; static const uint8_t unicode_prop_XID_Continue1_table[23] = { 0x43, 0x79, 0x80, 0x60, 0x2d, 0x1f, 0x81, 0x60, 0xcb, 0xc0, 0x85, 0x41, 0x95, 0x81, 0xf3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, }; static const uint8_t unicode_prop_Changes_When_Titlecased1_table[22] = { 0x41, 0xc3, 0x08, 0x08, 0x81, 0xa4, 0x81, 0x4e, 0xdc, 0xaa, 0x0a, 0x4e, 0x87, 0x3f, 0x3f, 0x87, 0x8b, 0x80, 0x8e, 0x80, 0xae, 0x80, }; static const uint8_t unicode_prop_Changes_When_Casefolded1_table[29] = { 0x41, 0xef, 0x80, 0x41, 0x9e, 0x80, 0x9e, 0x80, 0x5a, 0xe4, 0x83, 0x40, 0xb5, 0x00, 0x00, 0x00, 0x80, 0xde, 0x06, 0x06, 0x80, 0x8a, 0x09, 0x81, 0x89, 0x10, 0x81, 0x8d, 0x80, }; static const uint8_t unicode_prop_Changes_When_NFKC_Casefolded1_table[450] = { 0x40, 0x9f, 0x06, 0x00, 0x01, 0x00, 0x01, 0x12, 0x10, 0x82, 0xf3, 0x80, 0x8b, 0x80, 0x40, 0x84, 0x01, 0x01, 0x80, 0xa2, 0x01, 0x80, 0x40, 0xbb, 0x88, 0x9e, 0x29, 0x84, 0xda, 0x08, 0x81, 0x89, 0x80, 0xa3, 0x04, 0x02, 0x04, 0x08, 0x07, 0x80, 0x9e, 0x80, 0xa0, 0x82, 0x9c, 0x80, 0x42, 0x28, 0x80, 0xd7, 0x83, 0x42, 0xde, 0x87, 0xfb, 0x08, 0x80, 0xd2, 0x01, 0x80, 0xa1, 0x11, 0x80, 0x40, 0xfc, 0x81, 0x42, 0xd4, 0x80, 0xfe, 0x80, 0xa7, 0x81, 0xad, 0x80, 0xb5, 0x80, 0x88, 0x03, 0x03, 0x03, 0x80, 0x8b, 0x80, 0x88, 0x00, 0x26, 0x80, 0x90, 0x80, 0x88, 0x03, 0x03, 0x03, 0x80, 0x8b, 0x80, 0x41, 0x41, 0x80, 0xe1, 0x81, 0x46, 0x52, 0x81, 0xd4, 0x84, 0x45, 0x1b, 0x10, 0x8a, 0x80, 0x91, 0x80, 0x9b, 0x8c, 0x80, 0xa1, 0xa4, 0x40, 0xd5, 0x83, 0x40, 0xb5, 0x00, 0x00, 0x00, 0x80, 0x99, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xb7, 0x05, 0x00, 0x13, 0x05, 0x11, 0x02, 0x0c, 0x11, 0x00, 0x00, 0x0c, 0x15, 0x05, 0x08, 0x8f, 0x00, 0x20, 0x8b, 0x12, 0x2a, 0x08, 0x0b, 0x00, 0x07, 0x82, 0x8c, 0x06, 0x92, 0x81, 0x9a, 0x80, 0x8c, 0x8a, 0x80, 0xd6, 0x18, 0x10, 0x8a, 0x01, 0x0c, 0x0a, 0x00, 0x10, 0x11, 0x02, 0x06, 0x05, 0x1c, 0x85, 0x8f, 0x8f, 0x8f, 0x88, 0x80, 0x40, 0xa1, 0x08, 0x81, 0x40, 0xf7, 0x81, 0x41, 0x34, 0xd5, 0x99, 0x9a, 0x45, 0x20, 0x80, 0xe6, 0x82, 0xe4, 0x80, 0x41, 0x9e, 0x81, 0x40, 0xf0, 0x80, 0x41, 0x2e, 0x80, 0xd2, 0x80, 0x8b, 0x40, 0xd5, 0xa9, 0x80, 0xb4, 0x00, 0x82, 0xdf, 0x09, 0x80, 0xde, 0x80, 0xb0, 0xdd, 0x82, 0x8d, 0xdf, 0x9e, 0x80, 0xa7, 0x87, 0xae, 0x80, 0x41, 0x7f, 0x60, 0x72, 0x9b, 0x81, 0x40, 0xd1, 0x80, 0x40, 0x80, 0x12, 0x81, 0x43, 0x61, 0x83, 0x88, 0x80, 0x60, 0x4d, 0x95, 0x41, 0x0d, 0x08, 0x00, 0x81, 0x89, 0x00, 0x00, 0x09, 0x82, 0xc3, 0x81, 0xe9, 0xc2, 0x00, 0x97, 0x04, 0x00, 0x01, 0x01, 0x80, 0xeb, 0xa0, 0x41, 0x6a, 0x91, 0xbf, 0x81, 0xb5, 0xa7, 0x8c, 0x82, 0x99, 0x95, 0x94, 0x81, 0x8b, 0x80, 0x92, 0x03, 0x1a, 0x00, 0x80, 0x40, 0x86, 0x08, 0x80, 0x9f, 0x99, 0x40, 0x83, 0x15, 0x0d, 0x0d, 0x0a, 0x16, 0x06, 0x80, 0x88, 0x47, 0x87, 0x20, 0xa9, 0x80, 0x88, 0x60, 0xb4, 0xe4, 0x83, 0x50, 0x31, 0xa3, 0x44, 0x63, 0x86, 0x8d, 0x87, 0xbf, 0x85, 0x42, 0x3e, 0xd4, 0x80, 0xc6, 0x01, 0x08, 0x09, 0x0b, 0x80, 0x8b, 0x00, 0x06, 0x80, 0xc0, 0x03, 0x0f, 0x06, 0x80, 0x9b, 0x03, 0x04, 0x00, 0x16, 0x80, 0x41, 0x53, 0x81, 0x41, 0x23, 0x81, 0xb1, 0x48, 0x2f, 0xbd, 0x4d, 0x91, 0x18, 0x9a, 0x01, 0x00, 0x08, 0x80, 0x89, 0x03, 0x00, 0x00, 0x28, 0x18, 0x00, 0x00, 0x02, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x0b, 0x06, 0x03, 0x03, 0x00, 0x80, 0x89, 0x80, 0x90, 0x22, 0x04, 0x80, 0x90, 0x42, 0x43, 0x8a, 0x84, 0x9e, 0x80, 0x9f, 0x99, 0x82, 0xa2, 0x80, 0xee, 0x82, 0x8c, 0xab, 0x83, 0x88, 0x31, 0x49, 0x9d, 0x89, 0x60, 0xfc, 0x05, 0x42, 0x1d, 0x6b, 0x05, 0xe1, 0x4f, 0xff, }; static const uint8_t unicode_prop_ASCII_Hex_Digit_table[5] = { 0xaf, 0x89, 0x35, 0x99, 0x85, }; static const uint8_t unicode_prop_Bidi_Control_table[10] = { 0x46, 0x1b, 0x80, 0x59, 0xf0, 0x81, 0x99, 0x84, 0xb6, 0x83, }; static const uint8_t unicode_prop_Dash_table[58] = { 0xac, 0x80, 0x45, 0x5b, 0x80, 0xb2, 0x80, 0x4e, 0x40, 0x80, 0x44, 0x04, 0x80, 0x48, 0x08, 0x85, 0xbc, 0x80, 0xa6, 0x80, 0x8e, 0x80, 0x41, 0x85, 0x80, 0x4c, 0x03, 0x01, 0x80, 0x9e, 0x0b, 0x80, 0x9b, 0x80, 0x41, 0xbd, 0x80, 0x92, 0x80, 0xee, 0x80, 0x60, 0xcd, 0x8f, 0x81, 0xa4, 0x80, 0x89, 0x80, 0x40, 0xa8, 0x80, 0x4e, 0x5f, 0x80, 0x41, 0x3d, 0x80, }; static const uint8_t unicode_prop_Deprecated_table[23] = { 0x41, 0x48, 0x80, 0x45, 0x28, 0x80, 0x49, 0x02, 0x00, 0x80, 0x48, 0x28, 0x81, 0x48, 0xc4, 0x85, 0x42, 0xb8, 0x81, 0x6d, 0xdc, 0xd5, 0x80, }; static const uint8_t unicode_prop_Diacritic_table[438] = { 0xdd, 0x00, 0x80, 0xc6, 0x05, 0x03, 0x01, 0x81, 0x41, 0xf6, 0x40, 0x9e, 0x07, 0x25, 0x90, 0x0b, 0x80, 0x88, 0x81, 0x40, 0xfc, 0x84, 0x40, 0xd0, 0x80, 0xb6, 0x90, 0x80, 0x9a, 0x00, 0x01, 0x00, 0x40, 0x85, 0x3b, 0x81, 0x40, 0x85, 0x0b, 0x0a, 0x82, 0xc2, 0x9a, 0xda, 0x8a, 0xb9, 0x8a, 0xa1, 0x81, 0xfd, 0x87, 0xa8, 0x89, 0x8f, 0x9b, 0xbc, 0x80, 0x8f, 0x02, 0x83, 0x9b, 0x80, 0xc9, 0x80, 0x8f, 0x80, 0xed, 0x80, 0x8f, 0x80, 0xed, 0x80, 0x8f, 0x80, 0xae, 0x82, 0xbb, 0x80, 0x8f, 0x06, 0x80, 0xf6, 0x80, 0xed, 0x80, 0x8f, 0x80, 0xed, 0x80, 0x8f, 0x80, 0xec, 0x81, 0x8f, 0x80, 0xfb, 0x80, 0xee, 0x80, 0x8b, 0x28, 0x80, 0xea, 0x80, 0x8c, 0x84, 0xca, 0x81, 0x9a, 0x00, 0x00, 0x03, 0x81, 0xc1, 0x10, 0x81, 0xbd, 0x80, 0xef, 0x00, 0x81, 0xa7, 0x0b, 0x84, 0x98, 0x30, 0x80, 0x89, 0x81, 0x42, 0xc0, 0x82, 0x43, 0xb3, 0x81, 0x9d, 0x80, 0x40, 0x93, 0x8a, 0x88, 0x80, 0x41, 0x5a, 0x82, 0x41, 0x23, 0x80, 0x93, 0x39, 0x80, 0xaf, 0x8e, 0x81, 0x8a, 0xe7, 0x80, 0x8e, 0x80, 0xa5, 0x88, 0xb5, 0x81, 0xb9, 0x80, 0x8a, 0x81, 0xc1, 0x81, 0xbf, 0x85, 0xd1, 0x98, 0x18, 0x28, 0x0a, 0xb1, 0xbe, 0xd8, 0x8b, 0xa4, 0x8a, 0x41, 0xbc, 0x00, 0x82, 0x8a, 0x82, 0x8c, 0x82, 0x8c, 0x82, 0x8c, 0x81, 0x4c, 0xef, 0x82, 0x41, 0x3c, 0x80, 0x41, 0xf9, 0x85, 0xe8, 0x83, 0xde, 0x80, 0x60, 0x75, 0x71, 0x80, 0x8b, 0x08, 0x80, 0x9b, 0x81, 0xd1, 0x81, 0x8d, 0xa1, 0xe5, 0x82, 0xec, 0x81, 0x8b, 0x80, 0xa4, 0x80, 0x40, 0x96, 0x80, 0x9a, 0x91, 0xb8, 0x83, 0xa3, 0x80, 0xde, 0x80, 0x8b, 0x80, 0xa3, 0x80, 0x40, 0x94, 0x82, 0xc0, 0x83, 0xb2, 0x80, 0xe3, 0x84, 0x88, 0x82, 0xff, 0x81, 0x60, 0x4f, 0x2f, 0x80, 0x43, 0x00, 0x8f, 0x41, 0x0d, 0x00, 0x80, 0xae, 0x80, 0xac, 0x81, 0xc2, 0x80, 0x42, 0xfb, 0x80, 0x44, 0x9e, 0x28, 0xa9, 0x80, 0x88, 0x42, 0x7c, 0x13, 0x80, 0x40, 0xa4, 0x81, 0x42, 0x3a, 0x85, 0xa5, 0x80, 0x99, 0x84, 0x41, 0x8e, 0x82, 0xc5, 0x8a, 0xb0, 0x83, 0x40, 0xbf, 0x80, 0xa8, 0x80, 0xc7, 0x81, 0xf7, 0x81, 0xbd, 0x80, 0xcb, 0x80, 0x88, 0x82, 0xe7, 0x81, 0x40, 0xb1, 0x81, 0xcf, 0x81, 0x8f, 0x80, 0x97, 0x32, 0x84, 0xd8, 0x10, 0x81, 0x8c, 0x81, 0xde, 0x02, 0x80, 0xfa, 0x81, 0x40, 0xfa, 0x81, 0xfd, 0x80, 0xf5, 0x81, 0xf2, 0x80, 0x41, 0x0c, 0x81, 0x41, 0x01, 0x0b, 0x80, 0x40, 0x9b, 0x80, 0xd2, 0x80, 0x91, 0x80, 0xd0, 0x80, 0x41, 0xa4, 0x80, 0x41, 0x01, 0x00, 0x81, 0xd0, 0x80, 0x41, 0xa8, 0x81, 0x96, 0x80, 0x54, 0xeb, 0x8e, 0x60, 0x2c, 0xd8, 0x80, 0x49, 0xbf, 0x84, 0xba, 0x86, 0x42, 0x33, 0x81, 0x42, 0x21, 0x90, 0xcf, 0x81, 0x60, 0x3f, 0xfd, 0x18, 0x30, 0x81, 0x5f, 0x00, 0xad, 0x81, 0x96, 0x42, 0x1f, 0x12, 0x2f, 0x39, 0x86, 0x9d, 0x83, 0x4e, 0x81, 0xbd, 0x40, 0xc1, 0x86, 0x41, 0x76, 0x80, 0xbc, 0x83, 0x42, 0xfd, 0x81, 0x42, 0xdf, 0x86, 0xec, 0x10, 0x82, }; static const uint8_t unicode_prop_Extender_table[111] = { 0x40, 0xb6, 0x80, 0x42, 0x17, 0x81, 0x43, 0x6d, 0x80, 0x41, 0xb8, 0x80, 0x42, 0x75, 0x80, 0x40, 0x88, 0x80, 0xd8, 0x80, 0x42, 0xef, 0x80, 0xfe, 0x80, 0x49, 0x42, 0x80, 0xb7, 0x80, 0x42, 0x62, 0x80, 0x41, 0x8d, 0x80, 0xc3, 0x80, 0x53, 0x88, 0x80, 0xaa, 0x84, 0xe6, 0x81, 0xdc, 0x82, 0x60, 0x6f, 0x15, 0x80, 0x45, 0xf5, 0x80, 0x43, 0xc1, 0x80, 0x95, 0x80, 0x40, 0x88, 0x80, 0xeb, 0x80, 0x94, 0x81, 0x60, 0x54, 0x7a, 0x80, 0x48, 0x0f, 0x81, 0x45, 0xca, 0x80, 0x9a, 0x03, 0x80, 0x44, 0xc6, 0x80, 0x41, 0x24, 0x80, 0xf3, 0x81, 0x41, 0xf1, 0x82, 0x44, 0xce, 0x80, 0x60, 0x50, 0xa8, 0x81, 0x44, 0x9b, 0x08, 0x80, 0x60, 0x71, 0x57, 0x81, 0x44, 0xb0, 0x80, 0x43, 0x53, 0x82, }; static const uint8_t unicode_prop_Hex_Digit_table[12] = { 0xaf, 0x89, 0x35, 0x99, 0x85, 0x60, 0xfe, 0xa8, 0x89, 0x35, 0x99, 0x85, }; static const uint8_t unicode_prop_IDS_Unary_Operator_table[4] = { 0x60, 0x2f, 0xfd, 0x81, }; static const uint8_t unicode_prop_IDS_Binary_Operator_table[8] = { 0x60, 0x2f, 0xef, 0x09, 0x89, 0x41, 0xf0, 0x80, }; static const uint8_t unicode_prop_IDS_Trinary_Operator_table[4] = { 0x60, 0x2f, 0xf1, 0x81, }; static const uint8_t unicode_prop_Ideographic_table[72] = { 0x60, 0x30, 0x05, 0x81, 0x98, 0x88, 0x8d, 0x82, 0x43, 0xc4, 0x59, 0xbf, 0xbf, 0x60, 0x51, 0xff, 0x60, 0x58, 0xff, 0x41, 0x6d, 0x81, 0xe9, 0x60, 0x75, 0x09, 0x80, 0x9a, 0x57, 0xf7, 0x87, 0x44, 0xd5, 0xa8, 0x89, 0x60, 0x24, 0x66, 0x41, 0x8b, 0x60, 0x4d, 0x03, 0x60, 0xa6, 0xdf, 0x9f, 0x50, 0x39, 0x85, 0x40, 0xdd, 0x81, 0x56, 0x81, 0x8d, 0x5d, 0x30, 0x8e, 0x42, 0x6d, 0x49, 0xa1, 0x42, 0x1d, 0x45, 0xe1, 0x53, 0x4a, 0x84, 0x50, 0x5f, }; static const uint8_t unicode_prop_Join_Control_table[4] = { 0x60, 0x20, 0x0b, 0x81, }; static const uint8_t unicode_prop_Logical_Order_Exception_table[15] = { 0x4e, 0x3f, 0x84, 0xfa, 0x84, 0x4a, 0xef, 0x11, 0x80, 0x60, 0x90, 0xf9, 0x09, 0x00, 0x81, }; static const uint8_t unicode_prop_Modifier_Combining_Mark_table[16] = { 0x46, 0x53, 0x09, 0x80, 0x40, 0x82, 0x05, 0x02, 0x81, 0x41, 0xe0, 0x08, 0x12, 0x80, 0x9e, 0x80, }; static const uint8_t unicode_prop_Noncharacter_Code_Point_table[71] = { 0x60, 0xfd, 0xcf, 0x9f, 0x42, 0x0d, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, 0x60, 0xff, 0xfd, 0x81, }; static const uint8_t unicode_prop_Pattern_Syntax_table[58] = { 0xa0, 0x8e, 0x89, 0x86, 0x99, 0x18, 0x80, 0x99, 0x83, 0xa1, 0x30, 0x00, 0x08, 0x00, 0x0b, 0x03, 0x02, 0x80, 0x96, 0x80, 0x9e, 0x80, 0x5f, 0x17, 0x97, 0x87, 0x8e, 0x81, 0x92, 0x80, 0x89, 0x41, 0x30, 0x42, 0xcf, 0x40, 0x9f, 0x42, 0x75, 0x9d, 0x44, 0x6b, 0x41, 0xff, 0xff, 0x41, 0x80, 0x13, 0x98, 0x8e, 0x80, 0x60, 0xcd, 0x0c, 0x81, 0x41, 0x04, 0x81, }; static const uint8_t unicode_prop_Pattern_White_Space_table[11] = { 0x88, 0x84, 0x91, 0x80, 0xe3, 0x80, 0x5f, 0x87, 0x81, 0x97, 0x81, }; static const uint8_t unicode_prop_Quotation_Mark_table[31] = { 0xa1, 0x03, 0x80, 0x40, 0x82, 0x80, 0x8e, 0x80, 0x5f, 0x5b, 0x87, 0x98, 0x81, 0x4e, 0x06, 0x80, 0x41, 0xc8, 0x83, 0x8c, 0x82, 0x60, 0xce, 0x20, 0x83, 0x40, 0xbc, 0x03, 0x80, 0xd9, 0x81, }; static const uint8_t unicode_prop_Radical_table[9] = { 0x60, 0x2e, 0x7f, 0x99, 0x80, 0xd8, 0x8b, 0x40, 0xd5, }; static const uint8_t unicode_prop_Regional_Indicator_table[4] = { 0x61, 0xf1, 0xe5, 0x99, }; static const uint8_t unicode_prop_Sentence_Terminal_table[213] = { 0xa0, 0x80, 0x8b, 0x80, 0x8f, 0x80, 0x45, 0x48, 0x80, 0x40, 0x92, 0x82, 0x40, 0xb3, 0x80, 0xaa, 0x82, 0x40, 0xf5, 0x80, 0xbc, 0x00, 0x02, 0x81, 0x41, 0x24, 0x81, 0x46, 0xe3, 0x81, 0x43, 0x15, 0x03, 0x81, 0x43, 0x04, 0x80, 0x40, 0xc5, 0x81, 0x40, 0x9c, 0x81, 0xac, 0x04, 0x80, 0x41, 0x39, 0x81, 0x41, 0x61, 0x83, 0x40, 0xa1, 0x81, 0x89, 0x09, 0x81, 0x9c, 0x82, 0x40, 0xba, 0x81, 0xc0, 0x81, 0x43, 0xa3, 0x80, 0x96, 0x81, 0x88, 0x82, 0x4c, 0xae, 0x82, 0x41, 0x31, 0x80, 0x8c, 0x80, 0x95, 0x81, 0x41, 0xac, 0x80, 0x60, 0x74, 0xfb, 0x80, 0x41, 0x0d, 0x81, 0x40, 0xe2, 0x02, 0x80, 0x41, 0x7d, 0x81, 0xd5, 0x81, 0xde, 0x80, 0x40, 0x97, 0x81, 0x40, 0x92, 0x82, 0x40, 0x8f, 0x81, 0x40, 0xf8, 0x80, 0x60, 0x52, 0x25, 0x01, 0x81, 0xba, 0x02, 0x81, 0x40, 0xa8, 0x80, 0x8b, 0x80, 0x8f, 0x80, 0xc0, 0x80, 0x4a, 0xf3, 0x81, 0x44, 0xfc, 0x84, 0xab, 0x83, 0x40, 0xbc, 0x81, 0xf4, 0x83, 0xfe, 0x82, 0x40, 0x80, 0x0d, 0x80, 0x8f, 0x81, 0xd7, 0x08, 0x81, 0xeb, 0x80, 0x41, 0x29, 0x81, 0xf4, 0x81, 0x41, 0x74, 0x0c, 0x8e, 0xe8, 0x81, 0x40, 0xf8, 0x82, 0x42, 0x04, 0x00, 0x80, 0x40, 0xfa, 0x81, 0xd6, 0x81, 0x41, 0xa3, 0x81, 0x42, 0xb3, 0x81, 0xc9, 0x81, 0x60, 0x4b, 0x28, 0x81, 0x40, 0x84, 0x80, 0xc0, 0x81, 0x8a, 0x80, 0x42, 0x28, 0x81, 0x41, 0x27, 0x80, 0x60, 0x4e, 0x05, 0x80, 0x5d, 0xe7, 0x80, }; static const uint8_t unicode_prop_Soft_Dotted_table[79] = { 0xe8, 0x81, 0x40, 0xc3, 0x80, 0x41, 0x18, 0x80, 0x9d, 0x80, 0xb3, 0x80, 0x93, 0x80, 0x41, 0x3f, 0x80, 0xe1, 0x00, 0x80, 0x59, 0x08, 0x80, 0xb2, 0x80, 0x8c, 0x02, 0x80, 0x40, 0x83, 0x80, 0x40, 0x9c, 0x80, 0x41, 0xa4, 0x80, 0x40, 0xd5, 0x81, 0x4b, 0x31, 0x80, 0x61, 0xa7, 0xa4, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0xb1, 0x81, 0x48, 0x85, 0x80, 0x41, 0x30, 0x81, 0x99, 0x80, }; static const uint8_t unicode_prop_Terminal_Punctuation_table[264] = { 0xa0, 0x80, 0x89, 0x00, 0x80, 0x8a, 0x0a, 0x80, 0x43, 0x3d, 0x07, 0x80, 0x42, 0x00, 0x80, 0xb8, 0x80, 0xc7, 0x80, 0x8d, 0x00, 0x82, 0x40, 0xb3, 0x80, 0xaa, 0x8a, 0x00, 0x40, 0xea, 0x81, 0xb5, 0x28, 0x87, 0x9e, 0x80, 0x41, 0x04, 0x81, 0x44, 0xf3, 0x81, 0x40, 0xab, 0x03, 0x85, 0x41, 0x36, 0x81, 0x43, 0x14, 0x87, 0x43, 0x04, 0x80, 0xfb, 0x82, 0xc6, 0x81, 0x40, 0x9c, 0x12, 0x80, 0xa6, 0x19, 0x81, 0x41, 0x39, 0x81, 0x41, 0x61, 0x83, 0x40, 0xa1, 0x81, 0x89, 0x08, 0x82, 0x9c, 0x82, 0x40, 0xba, 0x84, 0xbd, 0x81, 0x43, 0xa3, 0x80, 0x96, 0x81, 0x88, 0x82, 0x4c, 0xae, 0x82, 0x41, 0x31, 0x80, 0x8c, 0x03, 0x80, 0x89, 0x00, 0x0a, 0x81, 0x41, 0xab, 0x81, 0x60, 0x74, 0xfa, 0x81, 0x41, 0x0c, 0x82, 0x40, 0xe2, 0x84, 0x41, 0x7d, 0x81, 0xd5, 0x81, 0xde, 0x80, 0x40, 0x96, 0x82, 0x40, 0x92, 0x82, 0xfe, 0x80, 0x8f, 0x81, 0x40, 0xf8, 0x80, 0x60, 0x52, 0x25, 0x01, 0x81, 0xb8, 0x10, 0x83, 0x40, 0xa8, 0x80, 0x89, 0x00, 0x80, 0x8a, 0x0a, 0x80, 0xc0, 0x01, 0x80, 0x44, 0x39, 0x80, 0xaf, 0x80, 0x44, 0x85, 0x80, 0x40, 0xc6, 0x80, 0x41, 0x35, 0x81, 0x40, 0x97, 0x85, 0xc3, 0x85, 0xd8, 0x83, 0x43, 0xb7, 0x84, 0xab, 0x83, 0x40, 0xbc, 0x86, 0xef, 0x83, 0xfe, 0x82, 0x40, 0x80, 0x0d, 0x80, 0x8f, 0x81, 0xd7, 0x84, 0xeb, 0x80, 0x41, 0x29, 0x81, 0xf4, 0x82, 0x8b, 0x81, 0x41, 0x65, 0x1a, 0x8e, 0xe8, 0x81, 0x40, 0xf8, 0x82, 0x42, 0x04, 0x00, 0x80, 0x40, 0xfa, 0x81, 0xd6, 0x0b, 0x81, 0x41, 0x9d, 0x82, 0xac, 0x80, 0x42, 0x84, 0x81, 0xc9, 0x81, 0x45, 0x2a, 0x84, 0x60, 0x45, 0xf8, 0x81, 0x40, 0x84, 0x80, 0xc0, 0x82, 0x89, 0x80, 0x42, 0x28, 0x81, 0x41, 0x26, 0x81, 0x60, 0x4e, 0x05, 0x80, 0x5d, 0xe6, 0x83, }; static const uint8_t unicode_prop_Unified_Ideograph_table[48] = { 0x60, 0x33, 0xff, 0x59, 0xbf, 0xbf, 0x60, 0x51, 0xff, 0x60, 0x5a, 0x0d, 0x08, 0x00, 0x81, 0x89, 0x00, 0x00, 0x09, 0x82, 0x61, 0x05, 0xd5, 0x60, 0xa6, 0xdf, 0x9f, 0x50, 0x39, 0x85, 0x40, 0xdd, 0x81, 0x56, 0x81, 0x8d, 0x5d, 0x30, 0x8e, 0x42, 0x6d, 0x51, 0xa1, 0x53, 0x4a, 0x84, 0x50, 0x5f, }; static const uint8_t unicode_prop_Variation_Selector_table[13] = { 0x58, 0x0a, 0x10, 0x80, 0x60, 0xe5, 0xef, 0x8f, 0x6d, 0x02, 0xef, 0x40, 0xef, }; static const uint8_t unicode_prop_Bidi_Mirrored_table[173] = { 0xa7, 0x81, 0x91, 0x00, 0x80, 0x9b, 0x00, 0x80, 0x9c, 0x00, 0x80, 0xac, 0x80, 0x8e, 0x80, 0x4e, 0x7d, 0x83, 0x47, 0x5c, 0x81, 0x49, 0x9b, 0x81, 0x89, 0x81, 0xb5, 0x81, 0x8d, 0x81, 0x40, 0xb0, 0x80, 0x40, 0xbf, 0x1a, 0x2a, 0x02, 0x0a, 0x18, 0x18, 0x00, 0x03, 0x88, 0x20, 0x80, 0x91, 0x23, 0x88, 0x08, 0x00, 0x38, 0x9f, 0x0b, 0x20, 0x88, 0x09, 0x92, 0x21, 0x88, 0x21, 0x0b, 0x97, 0x81, 0x8f, 0x3b, 0x93, 0x0e, 0x81, 0x44, 0x3c, 0x8d, 0xc9, 0x01, 0x18, 0x08, 0x14, 0x1c, 0x12, 0x8d, 0x41, 0x92, 0x95, 0x0d, 0x80, 0x8d, 0x38, 0x35, 0x10, 0x1c, 0x01, 0x0c, 0x18, 0x02, 0x09, 0x89, 0x29, 0x81, 0x8b, 0x92, 0x03, 0x08, 0x00, 0x08, 0x03, 0x21, 0x2a, 0x97, 0x81, 0x8a, 0x0b, 0x18, 0x09, 0x0b, 0xaa, 0x0f, 0x80, 0xa7, 0x20, 0x00, 0x14, 0x22, 0x18, 0x14, 0x00, 0x40, 0xff, 0x80, 0x42, 0x02, 0x1a, 0x08, 0x81, 0x8d, 0x09, 0x89, 0xaa, 0x87, 0x41, 0xaa, 0x89, 0x0f, 0x60, 0xce, 0x3c, 0x2c, 0x81, 0x40, 0xa1, 0x81, 0x91, 0x00, 0x80, 0x9b, 0x00, 0x80, 0x9c, 0x00, 0x00, 0x08, 0x81, 0x60, 0xd7, 0x76, 0x80, 0xb8, 0x80, 0xb8, 0x80, 0xb8, 0x80, 0xb8, 0x80, }; static const uint8_t unicode_prop_Emoji_table[238] = { 0xa2, 0x05, 0x04, 0x89, 0xee, 0x03, 0x80, 0x5f, 0x8c, 0x80, 0x8b, 0x80, 0x40, 0xd7, 0x80, 0x95, 0x80, 0xd9, 0x85, 0x8e, 0x81, 0x41, 0x6e, 0x81, 0x8b, 0x80, 0x40, 0xa5, 0x80, 0x98, 0x8a, 0x1a, 0x40, 0xc6, 0x80, 0x40, 0xe6, 0x81, 0x89, 0x80, 0x88, 0x80, 0xb9, 0x18, 0x84, 0x88, 0x01, 0x01, 0x09, 0x03, 0x01, 0x00, 0x09, 0x02, 0x02, 0x0f, 0x14, 0x00, 0x04, 0x8b, 0x8a, 0x09, 0x00, 0x08, 0x80, 0x91, 0x01, 0x81, 0x91, 0x28, 0x00, 0x0a, 0x0c, 0x01, 0x0b, 0x81, 0x8a, 0x0c, 0x09, 0x04, 0x08, 0x00, 0x81, 0x93, 0x0c, 0x28, 0x19, 0x03, 0x01, 0x01, 0x28, 0x01, 0x00, 0x00, 0x05, 0x02, 0x05, 0x80, 0x89, 0x81, 0x8e, 0x01, 0x03, 0x00, 0x03, 0x10, 0x80, 0x8a, 0x81, 0xaf, 0x82, 0x88, 0x80, 0x8d, 0x80, 0x8d, 0x80, 0x41, 0x73, 0x81, 0x41, 0xce, 0x82, 0x92, 0x81, 0xb2, 0x03, 0x80, 0x44, 0xd9, 0x80, 0x8b, 0x80, 0x42, 0x58, 0x00, 0x80, 0x61, 0xbd, 0x69, 0x80, 0x40, 0xc9, 0x80, 0x40, 0x9f, 0x81, 0x8b, 0x81, 0x8d, 0x01, 0x89, 0xca, 0x99, 0x01, 0x96, 0x80, 0x93, 0x01, 0x88, 0x94, 0x81, 0x40, 0xad, 0xa1, 0x81, 0xef, 0x09, 0x02, 0x81, 0xd2, 0x0a, 0x80, 0x41, 0x06, 0x80, 0xbe, 0x8a, 0x28, 0x97, 0x31, 0x0f, 0x8b, 0x01, 0x19, 0x03, 0x81, 0x8c, 0x09, 0x07, 0x81, 0x88, 0x04, 0x82, 0x8b, 0x17, 0x11, 0x00, 0x03, 0x05, 0x02, 0x05, 0xd5, 0xaf, 0xc5, 0x27, 0x0a, 0x83, 0x89, 0x10, 0x01, 0x10, 0x81, 0x89, 0x40, 0xe2, 0x8b, 0x18, 0x41, 0x1a, 0xae, 0x80, 0x89, 0x80, 0x40, 0xb8, 0xef, 0x8c, 0x82, 0x89, 0x84, 0xb7, 0x86, 0x8e, 0x81, 0x8a, 0x85, 0x88, }; static const uint8_t unicode_prop_Emoji_Component_table[28] = { 0xa2, 0x05, 0x04, 0x89, 0x5f, 0xd2, 0x80, 0x40, 0xd4, 0x80, 0x60, 0xdd, 0x2a, 0x80, 0x60, 0xf3, 0xd5, 0x99, 0x41, 0xfa, 0x84, 0x45, 0xaf, 0x83, 0x6c, 0x06, 0x6b, 0xdf, }; static const uint8_t unicode_prop_Emoji_Modifier_table[4] = { 0x61, 0xf3, 0xfa, 0x84, }; static const uint8_t unicode_prop_Emoji_Modifier_Base_table[71] = { 0x60, 0x26, 0x1c, 0x80, 0x40, 0xda, 0x80, 0x8f, 0x83, 0x61, 0xcc, 0x76, 0x80, 0xbb, 0x11, 0x01, 0x82, 0xf4, 0x09, 0x8a, 0x94, 0x92, 0x10, 0x1a, 0x02, 0x30, 0x00, 0x97, 0x80, 0x40, 0xc8, 0x0b, 0x80, 0x94, 0x03, 0x81, 0x40, 0xad, 0x12, 0x84, 0xd2, 0x80, 0x8f, 0x82, 0x88, 0x80, 0x8a, 0x80, 0x42, 0x3e, 0x01, 0x07, 0x3d, 0x80, 0x88, 0x89, 0x0a, 0xb7, 0x80, 0xbc, 0x08, 0x08, 0x80, 0x90, 0x10, 0x8c, 0x40, 0xe4, 0x82, 0xa9, 0x88, }; static const uint8_t unicode_prop_Emoji_Presentation_table[144] = { 0x60, 0x23, 0x19, 0x81, 0x40, 0xcc, 0x1a, 0x01, 0x80, 0x42, 0x08, 0x81, 0x94, 0x81, 0xb1, 0x8b, 0xaa, 0x80, 0x92, 0x80, 0x8c, 0x07, 0x81, 0x90, 0x0c, 0x0f, 0x04, 0x80, 0x94, 0x06, 0x08, 0x03, 0x01, 0x06, 0x03, 0x81, 0x9b, 0x80, 0xa2, 0x00, 0x03, 0x10, 0x80, 0xbc, 0x82, 0x97, 0x80, 0x8d, 0x80, 0x43, 0x5a, 0x81, 0xb2, 0x03, 0x80, 0x61, 0xc4, 0xad, 0x80, 0x40, 0xc9, 0x80, 0x40, 0xbd, 0x01, 0x89, 0xca, 0x99, 0x00, 0x97, 0x80, 0x93, 0x01, 0x20, 0x82, 0x94, 0x81, 0x40, 0xad, 0xa0, 0x8b, 0x88, 0x80, 0xc5, 0x80, 0x95, 0x8b, 0xaa, 0x1c, 0x8b, 0x90, 0x10, 0x82, 0xc6, 0x00, 0x80, 0x40, 0xba, 0x81, 0xbe, 0x8c, 0x18, 0x97, 0x91, 0x80, 0x99, 0x81, 0x8c, 0x80, 0xd5, 0xd4, 0xaf, 0xc5, 0x28, 0x12, 0x0a, 0x1b, 0x8a, 0x0e, 0x88, 0x40, 0xe2, 0x8b, 0x18, 0x41, 0x1a, 0xae, 0x80, 0x89, 0x80, 0x40, 0xb8, 0xef, 0x8c, 0x82, 0x89, 0x84, 0xb7, 0x86, 0x8e, 0x81, 0x8a, 0x85, 0x88, }; static const uint8_t unicode_prop_Extended_Pictographic_table[156] = { 0x40, 0xa8, 0x03, 0x80, 0x5f, 0x8c, 0x80, 0x8b, 0x80, 0x40, 0xd7, 0x80, 0x95, 0x80, 0xd9, 0x85, 0x8e, 0x81, 0x41, 0x6e, 0x81, 0x8b, 0x80, 0xde, 0x80, 0xc5, 0x80, 0x98, 0x8a, 0x1a, 0x40, 0xc6, 0x80, 0x40, 0xe6, 0x81, 0x89, 0x80, 0x88, 0x80, 0xb9, 0x18, 0x28, 0x8b, 0x80, 0xf1, 0x89, 0xf5, 0x81, 0x8a, 0x00, 0x00, 0x28, 0x10, 0x28, 0x89, 0x81, 0x8e, 0x01, 0x03, 0x00, 0x03, 0x10, 0x80, 0x8a, 0x84, 0xac, 0x82, 0x88, 0x80, 0x8d, 0x80, 0x8d, 0x80, 0x41, 0x73, 0x81, 0x41, 0xce, 0x82, 0x92, 0x81, 0xb2, 0x03, 0x80, 0x44, 0xd9, 0x80, 0x8b, 0x80, 0x42, 0x58, 0x00, 0x80, 0x61, 0xbd, 0x65, 0x40, 0xff, 0x8c, 0x82, 0x9e, 0x80, 0xbb, 0x85, 0x8b, 0x81, 0x8d, 0x01, 0x89, 0x91, 0xb8, 0x9a, 0x8e, 0x89, 0x80, 0x93, 0x01, 0x88, 0x03, 0x88, 0x41, 0xb1, 0x84, 0x41, 0x3d, 0x87, 0x41, 0x09, 0xaf, 0xff, 0xf3, 0x8b, 0xd4, 0xaa, 0x8b, 0x83, 0xb7, 0x87, 0x89, 0x85, 0xa7, 0x87, 0x9d, 0xd1, 0x8b, 0xae, 0x80, 0x89, 0x80, 0x41, 0xb8, 0x40, 0xff, 0x43, 0xfd, }; static const uint8_t unicode_prop_Default_Ignorable_Code_Point_table[51] = { 0x40, 0xac, 0x80, 0x42, 0xa0, 0x80, 0x42, 0xcb, 0x80, 0x4b, 0x41, 0x81, 0x46, 0x52, 0x81, 0xd4, 0x84, 0x47, 0xfa, 0x84, 0x99, 0x84, 0xb0, 0x8f, 0x50, 0xf3, 0x80, 0x60, 0xcc, 0x9a, 0x8f, 0x40, 0xee, 0x80, 0x40, 0x9f, 0x80, 0xce, 0x88, 0x60, 0xbc, 0xa6, 0x83, 0x54, 0xce, 0x87, 0x6c, 0x2e, 0x84, 0x4f, 0xff, }; typedef enum { UNICODE_PROP_Hyphen, UNICODE_PROP_Other_Math, UNICODE_PROP_Other_Alphabetic, UNICODE_PROP_Other_Lowercase, UNICODE_PROP_Other_Uppercase, UNICODE_PROP_Other_Grapheme_Extend, UNICODE_PROP_Other_Default_Ignorable_Code_Point, UNICODE_PROP_Other_ID_Start, UNICODE_PROP_Other_ID_Continue, UNICODE_PROP_Prepended_Concatenation_Mark, UNICODE_PROP_ID_Continue1, UNICODE_PROP_XID_Start1, UNICODE_PROP_XID_Continue1, UNICODE_PROP_Changes_When_Titlecased1, UNICODE_PROP_Changes_When_Casefolded1, UNICODE_PROP_Changes_When_NFKC_Casefolded1, UNICODE_PROP_ASCII_Hex_Digit, UNICODE_PROP_Bidi_Control, UNICODE_PROP_Dash, UNICODE_PROP_Deprecated, UNICODE_PROP_Diacritic, UNICODE_PROP_Extender, UNICODE_PROP_Hex_Digit, UNICODE_PROP_IDS_Unary_Operator, UNICODE_PROP_IDS_Binary_Operator, UNICODE_PROP_IDS_Trinary_Operator, UNICODE_PROP_Ideographic, UNICODE_PROP_Join_Control, UNICODE_PROP_Logical_Order_Exception, UNICODE_PROP_Modifier_Combining_Mark, UNICODE_PROP_Noncharacter_Code_Point, UNICODE_PROP_Pattern_Syntax, UNICODE_PROP_Pattern_White_Space, UNICODE_PROP_Quotation_Mark, UNICODE_PROP_Radical, UNICODE_PROP_Regional_Indicator, UNICODE_PROP_Sentence_Terminal, UNICODE_PROP_Soft_Dotted, UNICODE_PROP_Terminal_Punctuation, UNICODE_PROP_Unified_Ideograph, UNICODE_PROP_Variation_Selector, UNICODE_PROP_White_Space, UNICODE_PROP_Bidi_Mirrored, UNICODE_PROP_Emoji, UNICODE_PROP_Emoji_Component, UNICODE_PROP_Emoji_Modifier, UNICODE_PROP_Emoji_Modifier_Base, UNICODE_PROP_Emoji_Presentation, UNICODE_PROP_Extended_Pictographic, UNICODE_PROP_Default_Ignorable_Code_Point, UNICODE_PROP_ID_Start, UNICODE_PROP_Case_Ignorable, UNICODE_PROP_ASCII, UNICODE_PROP_Alphabetic, UNICODE_PROP_Any, UNICODE_PROP_Assigned, UNICODE_PROP_Cased, UNICODE_PROP_Changes_When_Casefolded, UNICODE_PROP_Changes_When_Casemapped, UNICODE_PROP_Changes_When_Lowercased, UNICODE_PROP_Changes_When_NFKC_Casefolded, UNICODE_PROP_Changes_When_Titlecased, UNICODE_PROP_Changes_When_Uppercased, UNICODE_PROP_Grapheme_Base, UNICODE_PROP_Grapheme_Extend, UNICODE_PROP_ID_Continue, UNICODE_PROP_ID_Compat_Math_Start, UNICODE_PROP_ID_Compat_Math_Continue, UNICODE_PROP_Lowercase, UNICODE_PROP_Math, UNICODE_PROP_Uppercase, UNICODE_PROP_XID_Continue, UNICODE_PROP_XID_Start, UNICODE_PROP_Cased1, UNICODE_PROP_InCB, UNICODE_PROP_COUNT, } UnicodePropertyEnum; static const char unicode_prop_name_table[] = "ASCII_Hex_Digit,AHex" "\0" "Bidi_Control,Bidi_C" "\0" "Dash" "\0" "Deprecated,Dep" "\0" "Diacritic,Dia" "\0" "Extender,Ext" "\0" "Hex_Digit,Hex" "\0" "IDS_Unary_Operator,IDSU" "\0" "IDS_Binary_Operator,IDSB" "\0" "IDS_Trinary_Operator,IDST" "\0" "Ideographic,Ideo" "\0" "Join_Control,Join_C" "\0" "Logical_Order_Exception,LOE" "\0" "Modifier_Combining_Mark,MCM" "\0" "Noncharacter_Code_Point,NChar" "\0" "Pattern_Syntax,Pat_Syn" "\0" "Pattern_White_Space,Pat_WS" "\0" "Quotation_Mark,QMark" "\0" "Radical" "\0" "Regional_Indicator,RI" "\0" "Sentence_Terminal,STerm" "\0" "Soft_Dotted,SD" "\0" "Terminal_Punctuation,Term" "\0" "Unified_Ideograph,UIdeo" "\0" "Variation_Selector,VS" "\0" "White_Space,space" "\0" "Bidi_Mirrored,Bidi_M" "\0" "Emoji" "\0" "Emoji_Component,EComp" "\0" "Emoji_Modifier,EMod" "\0" "Emoji_Modifier_Base,EBase" "\0" "Emoji_Presentation,EPres" "\0" "Extended_Pictographic,ExtPict" "\0" "Default_Ignorable_Code_Point,DI" "\0" "ID_Start,IDS" "\0" "Case_Ignorable,CI" "\0" "ASCII" "\0" "Alphabetic,Alpha" "\0" "Any" "\0" "Assigned" "\0" "Cased" "\0" "Changes_When_Casefolded,CWCF" "\0" "Changes_When_Casemapped,CWCM" "\0" "Changes_When_Lowercased,CWL" "\0" "Changes_When_NFKC_Casefolded,CWKCF" "\0" "Changes_When_Titlecased,CWT" "\0" "Changes_When_Uppercased,CWU" "\0" "Grapheme_Base,Gr_Base" "\0" "Grapheme_Extend,Gr_Ext" "\0" "ID_Continue,IDC" "\0" "ID_Compat_Math_Start" "\0" "ID_Compat_Math_Continue" "\0" "Lowercase,Lower" "\0" "Math" "\0" "Uppercase,Upper" "\0" "XID_Continue,XIDC" "\0" "XID_Start,XIDS" "\0" ; static const uint8_t * const unicode_prop_table[] = { unicode_prop_Hyphen_table, unicode_prop_Other_Math_table, unicode_prop_Other_Alphabetic_table, unicode_prop_Other_Lowercase_table, unicode_prop_Other_Uppercase_table, unicode_prop_Other_Grapheme_Extend_table, unicode_prop_Other_Default_Ignorable_Code_Point_table, unicode_prop_Other_ID_Start_table, unicode_prop_Other_ID_Continue_table, unicode_prop_Prepended_Concatenation_Mark_table, unicode_prop_ID_Continue1_table, unicode_prop_XID_Start1_table, unicode_prop_XID_Continue1_table, unicode_prop_Changes_When_Titlecased1_table, unicode_prop_Changes_When_Casefolded1_table, unicode_prop_Changes_When_NFKC_Casefolded1_table, unicode_prop_ASCII_Hex_Digit_table, unicode_prop_Bidi_Control_table, unicode_prop_Dash_table, unicode_prop_Deprecated_table, unicode_prop_Diacritic_table, unicode_prop_Extender_table, unicode_prop_Hex_Digit_table, unicode_prop_IDS_Unary_Operator_table, unicode_prop_IDS_Binary_Operator_table, unicode_prop_IDS_Trinary_Operator_table, unicode_prop_Ideographic_table, unicode_prop_Join_Control_table, unicode_prop_Logical_Order_Exception_table, unicode_prop_Modifier_Combining_Mark_table, unicode_prop_Noncharacter_Code_Point_table, unicode_prop_Pattern_Syntax_table, unicode_prop_Pattern_White_Space_table, unicode_prop_Quotation_Mark_table, unicode_prop_Radical_table, unicode_prop_Regional_Indicator_table, unicode_prop_Sentence_Terminal_table, unicode_prop_Soft_Dotted_table, unicode_prop_Terminal_Punctuation_table, unicode_prop_Unified_Ideograph_table, unicode_prop_Variation_Selector_table, unicode_prop_White_Space_table, unicode_prop_Bidi_Mirrored_table, unicode_prop_Emoji_table, unicode_prop_Emoji_Component_table, unicode_prop_Emoji_Modifier_table, unicode_prop_Emoji_Modifier_Base_table, unicode_prop_Emoji_Presentation_table, unicode_prop_Extended_Pictographic_table, unicode_prop_Default_Ignorable_Code_Point_table, unicode_prop_ID_Start_table, unicode_prop_Case_Ignorable_table, }; static const uint16_t unicode_prop_len_table[] = { countof(unicode_prop_Hyphen_table), countof(unicode_prop_Other_Math_table), countof(unicode_prop_Other_Alphabetic_table), countof(unicode_prop_Other_Lowercase_table), countof(unicode_prop_Other_Uppercase_table), countof(unicode_prop_Other_Grapheme_Extend_table), countof(unicode_prop_Other_Default_Ignorable_Code_Point_table), countof(unicode_prop_Other_ID_Start_table), countof(unicode_prop_Other_ID_Continue_table), countof(unicode_prop_Prepended_Concatenation_Mark_table), countof(unicode_prop_ID_Continue1_table), countof(unicode_prop_XID_Start1_table), countof(unicode_prop_XID_Continue1_table), countof(unicode_prop_Changes_When_Titlecased1_table), countof(unicode_prop_Changes_When_Casefolded1_table), countof(unicode_prop_Changes_When_NFKC_Casefolded1_table), countof(unicode_prop_ASCII_Hex_Digit_table), countof(unicode_prop_Bidi_Control_table), countof(unicode_prop_Dash_table), countof(unicode_prop_Deprecated_table), countof(unicode_prop_Diacritic_table), countof(unicode_prop_Extender_table), countof(unicode_prop_Hex_Digit_table), countof(unicode_prop_IDS_Unary_Operator_table), countof(unicode_prop_IDS_Binary_Operator_table), countof(unicode_prop_IDS_Trinary_Operator_table), countof(unicode_prop_Ideographic_table), countof(unicode_prop_Join_Control_table), countof(unicode_prop_Logical_Order_Exception_table), countof(unicode_prop_Modifier_Combining_Mark_table), countof(unicode_prop_Noncharacter_Code_Point_table), countof(unicode_prop_Pattern_Syntax_table), countof(unicode_prop_Pattern_White_Space_table), countof(unicode_prop_Quotation_Mark_table), countof(unicode_prop_Radical_table), countof(unicode_prop_Regional_Indicator_table), countof(unicode_prop_Sentence_Terminal_table), countof(unicode_prop_Soft_Dotted_table), countof(unicode_prop_Terminal_Punctuation_table), countof(unicode_prop_Unified_Ideograph_table), countof(unicode_prop_Variation_Selector_table), countof(unicode_prop_White_Space_table), countof(unicode_prop_Bidi_Mirrored_table), countof(unicode_prop_Emoji_table), countof(unicode_prop_Emoji_Component_table), countof(unicode_prop_Emoji_Modifier_table), countof(unicode_prop_Emoji_Modifier_Base_table), countof(unicode_prop_Emoji_Presentation_table), countof(unicode_prop_Extended_Pictographic_table), countof(unicode_prop_Default_Ignorable_Code_Point_table), countof(unicode_prop_ID_Start_table), countof(unicode_prop_Case_Ignorable_table), }; /* * QuickJS Javascript Engine * * Copyright (c) 2017-2024 Fabrice Bellard * Copyright (c) 2017-2024 Charlie Gordon * Copyright (c) 2023-2025 Ben Noordhuis * Copyright (c) 2023-2025 Saúl Ibarra Corretgé * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef QUICKJS_H #define QUICKJS_H #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif #define QUICKJS_NG 1 #if defined(__GNUC__) || defined(__clang__) #define js_force_inline inline __attribute__((always_inline)) #define JS_EXTERN __attribute__((visibility("default"))) #else #define js_force_inline inline #define JS_EXTERN /* nothing */ #endif /* Borrowed from Folly */ #ifndef JS_PRINTF_FORMAT #ifdef _MSC_VER #include #define JS_PRINTF_FORMAT _Printf_format_string_ #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) #else #define JS_PRINTF_FORMAT #if !defined(__clang__) && defined(__GNUC__) #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) \ __attribute__((format(gnu_printf, format_param, dots_param))) #else #define JS_PRINTF_FORMAT_ATTR(format_param, dots_param) \ __attribute__((format(printf, format_param, dots_param))) #endif #endif #endif typedef struct JSRuntime JSRuntime; typedef struct JSContext JSContext; typedef struct JSObject JSObject; typedef struct JSClass JSClass; typedef uint32_t JSClassID; typedef uint32_t JSAtom; /* Unless documented otherwise, C string pointers (`char *` or `const char *`) are assumed to verify these constraints: - unless a length is passed separately, the string has a null terminator - string contents is either pure ASCII or is UTF-8 encoded. */ /* Overridable purely for testing purposes; don't touch. */ #ifndef JS_NAN_BOXING #if INTPTR_MAX < INT64_MAX #define JS_NAN_BOXING 1 /* Use NAN boxing for 32bit builds. */ #endif #endif enum { /* all tags with a reference count are negative */ JS_TAG_FIRST = -9, /* first negative tag */ JS_TAG_BIG_INT = -9, JS_TAG_SYMBOL = -8, JS_TAG_STRING = -7, JS_TAG_MODULE = -3, /* used internally */ JS_TAG_FUNCTION_BYTECODE = -2, /* used internally */ JS_TAG_OBJECT = -1, JS_TAG_INT = 0, JS_TAG_BOOL = 1, JS_TAG_NULL = 2, JS_TAG_UNDEFINED = 3, JS_TAG_UNINITIALIZED = 4, JS_TAG_CATCH_OFFSET = 5, JS_TAG_EXCEPTION = 6, JS_TAG_FLOAT64 = 7, /* any larger tag is FLOAT64 if JS_NAN_BOXING */ }; #if !defined(JS_CHECK_JSVALUE) #define JSValueConst JSValue #endif // JS_CHECK_JSVALUE build mode does not produce working code but is here to // help catch reference counting bugs at compile time, by making it harder // to mix up JSValue and JSValueConst // // rules: // // - a function with a JSValue parameter takes ownership; // caller must *not* call JS_FreeValue // // - a function with a JSValueConst parameter does not take ownership; // caller *must* call JS_FreeValue // // - a function returning a JSValue transfers ownership to caller; // caller *must* call JS_FreeValue // // - a function returning a JSValueConst does *not* transfer ownership; // caller must *not* call JS_FreeValue #if defined(JS_CHECK_JSVALUE) typedef struct JSValue *JSValue; typedef const struct JSValue *JSValueConst; #define JS_MKVAL(tag, val) ((JSValue)((tag) | (intptr_t)(val) << 4)) #define JS_MKPTR(tag, ptr) ((JSValue)((tag) | (intptr_t)(ptr))) #define JS_VALUE_GET_NORM_TAG(v) ((int)((intptr_t)(v) & 15)) #define JS_VALUE_GET_TAG(v) ((int)((intptr_t)(v) & 15)) #define JS_VALUE_GET_PTR(v) ((void *)((intptr_t)(v) & ~15)) #define JS_VALUE_GET_INT(v) ((int)((intptr_t)(v) >> 4)) #define JS_VALUE_GET_BOOL(v) ((int)((intptr_t)(v) >> 4)) #define JS_VALUE_GET_FLOAT64(v) ((double)((intptr_t)(v) >> 4)) #define JS_TAG_IS_FLOAT64(tag) ((int)(tag) == JS_TAG_FLOAT64) #define JS_NAN JS_MKVAL(JS_TAG_FLOAT64, 0) static inline JSValue __JS_NewFloat64(double d) { return JS_MKVAL(JS_TAG_FLOAT64, (int)d); } static inline bool JS_VALUE_IS_NAN(JSValue v) { (void)&v; return false; } #elif defined(JS_NAN_BOXING) && JS_NAN_BOXING typedef uint64_t JSValue; #define JS_VALUE_GET_TAG(v) (int)((v) >> 32) #define JS_VALUE_GET_INT(v) (int)(v) #define JS_VALUE_GET_BOOL(v) (int)(v) #define JS_VALUE_GET_PTR(v) (void *)(intptr_t)(v) #define JS_MKVAL(tag, val) (((uint64_t)(tag) << 32) | (uint32_t)(val)) #define JS_MKPTR(tag, ptr) (((uint64_t)(tag) << 32) | (uintptr_t)(ptr)) #define JS_FLOAT64_TAG_ADDEND (0x7ff80000 - JS_TAG_FIRST + 1) /* quiet NaN encoding */ static inline double JS_VALUE_GET_FLOAT64(JSValue v) { union { JSValue v; double d; } u; u.v = v; u.v += (uint64_t)JS_FLOAT64_TAG_ADDEND << 32; return u.d; } #define JS_NAN (0x7ff8000000000000 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32)) static inline JSValue __JS_NewFloat64(double d) { union { double d; uint64_t u64; } u; JSValue v; u.d = d; /* normalize NaN */ if ((u.u64 & 0x7fffffffffffffff) > 0x7ff0000000000000) v = JS_NAN; else v = u.u64 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32); return v; } #define JS_TAG_IS_FLOAT64(tag) ((unsigned)((tag) - JS_TAG_FIRST) >= (JS_TAG_FLOAT64 - JS_TAG_FIRST)) /* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */ static inline int JS_VALUE_GET_NORM_TAG(JSValue v) { uint32_t tag; tag = JS_VALUE_GET_TAG(v); if (JS_TAG_IS_FLOAT64(tag)) return JS_TAG_FLOAT64; else return tag; } static inline bool JS_VALUE_IS_NAN(JSValue v) { uint32_t tag; tag = JS_VALUE_GET_TAG(v); return tag == (JS_NAN >> 32); } #else /* !JS_NAN_BOXING */ typedef union JSValueUnion { int32_t int32; double float64; void *ptr; } JSValueUnion; typedef struct JSValue { JSValueUnion u; int64_t tag; } JSValue; #define JS_VALUE_GET_TAG(v) ((int32_t)(v).tag) /* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */ #define JS_VALUE_GET_NORM_TAG(v) JS_VALUE_GET_TAG(v) #define JS_VALUE_GET_INT(v) ((v).u.int32) #define JS_VALUE_GET_BOOL(v) ((v).u.int32) #define JS_VALUE_GET_FLOAT64(v) ((v).u.float64) #define JS_VALUE_GET_PTR(v) ((v).u.ptr) /* msvc doesn't understand designated initializers without /std:c++20 */ #ifdef __cplusplus static inline JSValue JS_MKPTR(int64_t tag, void *ptr) { JSValue v; v.u.ptr = ptr; v.tag = tag; return v; } static inline JSValue JS_MKVAL(int64_t tag, int32_t int32) { JSValue v; v.u.int32 = int32; v.tag = tag; return v; } static inline JSValue JS_MKNAN(void) { JSValue v; v.u.float64 = NAN; v.tag = JS_TAG_FLOAT64; return v; } /* provide as macros for consistency and backward compat reasons */ #define JS_MKPTR(tag, ptr) JS_MKPTR(tag, ptr) #define JS_MKVAL(tag, val) JS_MKVAL(tag, val) #define JS_NAN JS_MKNAN() /* alas, not a constant expression */ #else #define JS_MKPTR(tag, p) (JSValue){ (JSValueUnion){ .ptr = p }, tag } #define JS_MKVAL(tag, val) (JSValue){ (JSValueUnion){ .int32 = val }, tag } #define JS_NAN (JSValue){ (JSValueUnion){ .float64 = NAN }, JS_TAG_FLOAT64 } #endif #define JS_TAG_IS_FLOAT64(tag) ((unsigned)(tag) == JS_TAG_FLOAT64) static inline JSValue __JS_NewFloat64(double d) { JSValue v; v.tag = JS_TAG_FLOAT64; v.u.float64 = d; return v; } static inline bool JS_VALUE_IS_NAN(JSValue v) { union { double d; uint64_t u64; } u; if (v.tag != JS_TAG_FLOAT64) return 0; u.d = v.u.float64; return (u.u64 & 0x7fffffffffffffff) > 0x7ff0000000000000; } #endif /* !JS_NAN_BOXING */ #define JS_VALUE_IS_BOTH_INT(v1, v2) ((JS_VALUE_GET_TAG(v1) | JS_VALUE_GET_TAG(v2)) == 0) #define JS_VALUE_IS_BOTH_FLOAT(v1, v2) (JS_TAG_IS_FLOAT64(JS_VALUE_GET_TAG(v1)) && JS_TAG_IS_FLOAT64(JS_VALUE_GET_TAG(v2))) #define JS_VALUE_GET_OBJ(v) ((JSObject *)JS_VALUE_GET_PTR(v)) #define JS_VALUE_HAS_REF_COUNT(v) ((unsigned)JS_VALUE_GET_TAG(v) >= (unsigned)JS_TAG_FIRST) /* special values */ #define JS_NULL JS_MKVAL(JS_TAG_NULL, 0) #define JS_UNDEFINED JS_MKVAL(JS_TAG_UNDEFINED, 0) #define JS_FALSE JS_MKVAL(JS_TAG_BOOL, 0) #define JS_TRUE JS_MKVAL(JS_TAG_BOOL, 1) #define JS_EXCEPTION JS_MKVAL(JS_TAG_EXCEPTION, 0) #define JS_UNINITIALIZED JS_MKVAL(JS_TAG_UNINITIALIZED, 0) /* flags for object properties */ #define JS_PROP_CONFIGURABLE (1 << 0) #define JS_PROP_WRITABLE (1 << 1) #define JS_PROP_ENUMERABLE (1 << 2) #define JS_PROP_C_W_E (JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE | JS_PROP_ENUMERABLE) #define JS_PROP_LENGTH (1 << 3) /* used internally in Arrays */ #define JS_PROP_TMASK (3 << 4) /* mask for NORMAL, GETSET, VARREF, AUTOINIT */ #define JS_PROP_NORMAL (0 << 4) #define JS_PROP_GETSET (1 << 4) #define JS_PROP_VARREF (2 << 4) /* used internally */ #define JS_PROP_AUTOINIT (3 << 4) /* used internally */ /* flags for JS_DefineProperty */ #define JS_PROP_HAS_SHIFT 8 #define JS_PROP_HAS_CONFIGURABLE (1 << 8) #define JS_PROP_HAS_WRITABLE (1 << 9) #define JS_PROP_HAS_ENUMERABLE (1 << 10) #define JS_PROP_HAS_GET (1 << 11) #define JS_PROP_HAS_SET (1 << 12) #define JS_PROP_HAS_VALUE (1 << 13) /* throw an exception if false would be returned (JS_DefineProperty/JS_SetProperty) */ #define JS_PROP_THROW (1 << 14) /* throw an exception if false would be returned in strict mode (JS_SetProperty) */ #define JS_PROP_THROW_STRICT (1 << 15) #define JS_PROP_NO_ADD (1 << 16) /* internal use */ #define JS_PROP_NO_EXOTIC (1 << 17) /* internal use */ #define JS_PROP_DEFINE_PROPERTY (1 << 18) /* internal use */ #define JS_PROP_REFLECT_DEFINE_PROPERTY (1 << 19) /* internal use */ #ifndef JS_DEFAULT_STACK_SIZE #define JS_DEFAULT_STACK_SIZE (1024 * 1024) #endif /* JS_Eval() flags */ #define JS_EVAL_TYPE_GLOBAL (0 << 0) /* global code (default) */ #define JS_EVAL_TYPE_MODULE (1 << 0) /* module code */ #define JS_EVAL_TYPE_DIRECT (2 << 0) /* direct call (internal use) */ #define JS_EVAL_TYPE_INDIRECT (3 << 0) /* indirect call (internal use) */ #define JS_EVAL_TYPE_MASK (3 << 0) #define JS_EVAL_FLAG_STRICT (1 << 3) /* force 'strict' mode */ #define JS_EVAL_FLAG_UNUSED (1 << 4) /* unused */ /* compile but do not run. The result is an object with a JS_TAG_FUNCTION_BYTECODE or JS_TAG_MODULE tag. It can be executed with JS_EvalFunction(). */ #define JS_EVAL_FLAG_COMPILE_ONLY (1 << 5) /* don't include the stack frames before this eval in the Error() backtraces */ #define JS_EVAL_FLAG_BACKTRACE_BARRIER (1 << 6) /* allow top-level await in normal script. JS_Eval() returns a promise. Only allowed with JS_EVAL_TYPE_GLOBAL */ #define JS_EVAL_FLAG_ASYNC (1 << 7) typedef JSValue JSCFunction(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv); typedef JSValue JSCFunctionMagic(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic); typedef JSValue JSCFunctionData(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic, JSValueConst *func_data); typedef struct JSMallocFunctions { void *(*js_calloc)(void *opaque, size_t count, size_t size); void *(*js_malloc)(void *opaque, size_t size); void (*js_free)(void *opaque, void *ptr); void *(*js_realloc)(void *opaque, void *ptr, size_t size); size_t (*js_malloc_usable_size)(const void *ptr); } JSMallocFunctions; // Debug trace system: the debug output will be produced to the dump stream (currently // stdout) if dumps are enabled and JS_SetDumpFlags is invoked with the corresponding // bit set. #define JS_DUMP_BYTECODE_FINAL 0x01 /* dump pass 3 final byte code */ #define JS_DUMP_BYTECODE_PASS2 0x02 /* dump pass 2 code */ #define JS_DUMP_BYTECODE_PASS1 0x04 /* dump pass 1 code */ #define JS_DUMP_BYTECODE_HEX 0x10 /* dump bytecode in hex */ #define JS_DUMP_BYTECODE_PC2LINE 0x20 /* dump line number table */ #define JS_DUMP_BYTECODE_STACK 0x40 /* dump compute_stack_size */ #define JS_DUMP_BYTECODE_STEP 0x80 /* dump executed bytecode */ #define JS_DUMP_READ_OBJECT 0x100 /* dump the marshalled objects at load time */ #define JS_DUMP_FREE 0x200 /* dump every object free */ #define JS_DUMP_GC 0x400 /* dump the occurrence of the automatic GC */ #define JS_DUMP_GC_FREE 0x800 /* dump objects freed by the GC */ #define JS_DUMP_MODULE_RESOLVE 0x1000 /* dump module resolution steps */ #define JS_DUMP_PROMISE 0x2000 /* dump promise steps */ #define JS_DUMP_LEAKS 0x4000 /* dump leaked objects and strings in JS_FreeRuntime */ #define JS_DUMP_ATOM_LEAKS 0x8000 /* dump leaked atoms in JS_FreeRuntime */ #define JS_DUMP_MEM 0x10000 /* dump memory usage in JS_FreeRuntime */ #define JS_DUMP_OBJECTS 0x20000 /* dump objects in JS_FreeRuntime */ #define JS_DUMP_ATOMS 0x40000 /* dump atoms in JS_FreeRuntime */ #define JS_DUMP_SHAPES 0x80000 /* dump shapes in JS_FreeRuntime */ // Finalizers run in LIFO order at the very end of JS_FreeRuntime. // Intended for cleanup of associated resources; the runtime itself // is no longer usable. typedef void JSRuntimeFinalizer(JSRuntime *rt, void *arg); typedef struct JSGCObjectHeader JSGCObjectHeader; JS_EXTERN JSRuntime *JS_NewRuntime(void); /* info lifetime must exceed that of rt */ JS_EXTERN void JS_SetRuntimeInfo(JSRuntime *rt, const char *info); /* use 0 to disable memory limit */ JS_EXTERN void JS_SetMemoryLimit(JSRuntime *rt, size_t limit); JS_EXTERN void JS_SetDumpFlags(JSRuntime *rt, uint64_t flags); JS_EXTERN uint64_t JS_GetDumpFlags(JSRuntime *rt); JS_EXTERN size_t JS_GetGCThreshold(JSRuntime *rt); JS_EXTERN void JS_SetGCThreshold(JSRuntime *rt, size_t gc_threshold); /* use 0 to disable maximum stack size check */ JS_EXTERN void JS_SetMaxStackSize(JSRuntime *rt, size_t stack_size); /* should be called when changing thread to update the stack top value used to check stack overflow. */ JS_EXTERN void JS_UpdateStackTop(JSRuntime *rt); JS_EXTERN JSRuntime *JS_NewRuntime2(const JSMallocFunctions *mf, void *opaque); JS_EXTERN void JS_FreeRuntime(JSRuntime *rt); JS_EXTERN void *JS_GetRuntimeOpaque(JSRuntime *rt); JS_EXTERN void JS_SetRuntimeOpaque(JSRuntime *rt, void *opaque); JS_EXTERN int JS_AddRuntimeFinalizer(JSRuntime *rt, JSRuntimeFinalizer *finalizer, void *arg); typedef void JS_MarkFunc(JSRuntime *rt, JSGCObjectHeader *gp); JS_EXTERN void JS_MarkValue(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); JS_EXTERN void JS_RunGC(JSRuntime *rt); JS_EXTERN bool JS_IsLiveObject(JSRuntime *rt, JSValueConst obj); JS_EXTERN JSContext *JS_NewContext(JSRuntime *rt); JS_EXTERN void JS_FreeContext(JSContext *s); JS_EXTERN JSContext *JS_DupContext(JSContext *ctx); JS_EXTERN void *JS_GetContextOpaque(JSContext *ctx); JS_EXTERN void JS_SetContextOpaque(JSContext *ctx, void *opaque); JS_EXTERN JSRuntime *JS_GetRuntime(JSContext *ctx); JS_EXTERN void JS_SetClassProto(JSContext *ctx, JSClassID class_id, JSValue obj); JS_EXTERN JSValue JS_GetClassProto(JSContext *ctx, JSClassID class_id); JS_EXTERN JSValue JS_GetFunctionProto(JSContext *ctx); /* the following functions are used to select the intrinsic object to save memory */ JS_EXTERN JSContext *JS_NewContextRaw(JSRuntime *rt); JS_EXTERN void JS_AddIntrinsicBaseObjects(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicDate(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicEval(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicRegExpCompiler(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicRegExp(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicJSON(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicProxy(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicMapSet(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicTypedArrays(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicPromise(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicBigInt(JSContext *ctx); JS_EXTERN void JS_AddIntrinsicWeakRef(JSContext *ctx); JS_EXTERN void JS_AddPerformance(JSContext *ctx); /* for equality comparisons and sameness */ JS_EXTERN int JS_IsEqual(JSContext *ctx, JSValueConst op1, JSValueConst op2); JS_EXTERN bool JS_IsStrictEqual(JSContext *ctx, JSValueConst op1, JSValueConst op2); JS_EXTERN bool JS_IsSameValue(JSContext *ctx, JSValueConst op1, JSValueConst op2); /* Similar to same-value equality, but +0 and -0 are considered equal. */ JS_EXTERN bool JS_IsSameValueZero(JSContext *ctx, JSValueConst op1, JSValueConst op2); /* Only used for running 262 tests. TODO(saghul) add build time flag. */ JS_EXTERN JSValue js_string_codePointRange(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv); JS_EXTERN void *js_calloc_rt(JSRuntime *rt, size_t count, size_t size); JS_EXTERN void *js_malloc_rt(JSRuntime *rt, size_t size); JS_EXTERN void js_free_rt(JSRuntime *rt, void *ptr); JS_EXTERN void *js_realloc_rt(JSRuntime *rt, void *ptr, size_t size); JS_EXTERN size_t js_malloc_usable_size_rt(JSRuntime *rt, const void *ptr); JS_EXTERN void *js_mallocz_rt(JSRuntime *rt, size_t size); JS_EXTERN void *js_calloc(JSContext *ctx, size_t count, size_t size); JS_EXTERN void *js_malloc(JSContext *ctx, size_t size); JS_EXTERN void js_free(JSContext *ctx, void *ptr); JS_EXTERN void *js_realloc(JSContext *ctx, void *ptr, size_t size); JS_EXTERN size_t js_malloc_usable_size(JSContext *ctx, const void *ptr); JS_EXTERN void *js_realloc2(JSContext *ctx, void *ptr, size_t size, size_t *pslack); JS_EXTERN void *js_mallocz(JSContext *ctx, size_t size); JS_EXTERN char *js_strdup(JSContext *ctx, const char *str); JS_EXTERN char *js_strndup(JSContext *ctx, const char *s, size_t n); typedef struct JSMemoryUsage { int64_t malloc_size, malloc_limit, memory_used_size; int64_t malloc_count; int64_t memory_used_count; int64_t atom_count, atom_size; int64_t str_count, str_size; int64_t obj_count, obj_size; int64_t prop_count, prop_size; int64_t shape_count, shape_size; int64_t js_func_count, js_func_size, js_func_code_size; int64_t js_func_pc2line_count, js_func_pc2line_size; int64_t c_func_count, array_count; int64_t fast_array_count, fast_array_elements; int64_t binary_object_count, binary_object_size; } JSMemoryUsage; JS_EXTERN void JS_ComputeMemoryUsage(JSRuntime *rt, JSMemoryUsage *s); JS_EXTERN void JS_DumpMemoryUsage(FILE *fp, const JSMemoryUsage *s, JSRuntime *rt); /* atom support */ #define JS_ATOM_NULL 0 JS_EXTERN JSAtom JS_NewAtomLen(JSContext *ctx, const char *str, size_t len); JS_EXTERN JSAtom JS_NewAtom(JSContext *ctx, const char *str); JS_EXTERN JSAtom JS_NewAtomUInt32(JSContext *ctx, uint32_t n); JS_EXTERN JSAtom JS_DupAtom(JSContext *ctx, JSAtom v); JS_EXTERN void JS_FreeAtom(JSContext *ctx, JSAtom v); JS_EXTERN void JS_FreeAtomRT(JSRuntime *rt, JSAtom v); JS_EXTERN JSValue JS_AtomToValue(JSContext *ctx, JSAtom atom); JS_EXTERN JSValue JS_AtomToString(JSContext *ctx, JSAtom atom); JS_EXTERN const char *JS_AtomToCString(JSContext *ctx, JSAtom atom); JS_EXTERN JSAtom JS_ValueToAtom(JSContext *ctx, JSValueConst val); /* object class support */ typedef struct JSPropertyEnum { bool is_enumerable; JSAtom atom; } JSPropertyEnum; typedef struct JSPropertyDescriptor { int flags; JSValue value; JSValue getter; JSValue setter; } JSPropertyDescriptor; typedef struct JSClassExoticMethods { /* Return -1 if exception (can only happen in case of Proxy object), false if the property does not exists, true if it exists. If 1 is returned, the property descriptor 'desc' is filled if != NULL. */ int (*get_own_property)(JSContext *ctx, JSPropertyDescriptor *desc, JSValueConst obj, JSAtom prop); /* '*ptab' should hold the '*plen' property keys. Return 0 if OK, -1 if exception. The 'is_enumerable' field is ignored. */ int (*get_own_property_names)(JSContext *ctx, JSPropertyEnum **ptab, uint32_t *plen, JSValueConst obj); /* return < 0 if exception, or true/false */ int (*delete_property)(JSContext *ctx, JSValueConst obj, JSAtom prop); /* return < 0 if exception or true/false */ int (*define_own_property)(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags); /* The following methods can be emulated with the previous ones, so they are usually not needed */ /* return < 0 if exception or true/false */ int (*has_property)(JSContext *ctx, JSValueConst obj, JSAtom atom); JSValue (*get_property)(JSContext *ctx, JSValueConst obj, JSAtom atom, JSValueConst receiver); /* return < 0 if exception or true/false */ int (*set_property)(JSContext *ctx, JSValueConst obj, JSAtom atom, JSValueConst value, JSValueConst receiver, int flags); } JSClassExoticMethods; typedef void JSClassFinalizer(JSRuntime *rt, JSValueConst val); typedef void JSClassGCMark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); #define JS_CALL_FLAG_CONSTRUCTOR (1 << 0) typedef JSValue JSClassCall(JSContext *ctx, JSValueConst func_obj, JSValueConst this_val, int argc, JSValueConst *argv, int flags); typedef struct JSClassDef { const char *class_name; /* pure ASCII only! */ JSClassFinalizer *finalizer; JSClassGCMark *gc_mark; /* if call != NULL, the object is a function. If (flags & JS_CALL_FLAG_CONSTRUCTOR) != 0, the function is called as a constructor. In this case, 'this_val' is new.target. A constructor call only happens if the object constructor bit is set (see JS_SetConstructorBit()). */ JSClassCall *call; /* XXX: suppress this indirection ? It is here only to save memory because only a few classes need these methods */ JSClassExoticMethods *exotic; } JSClassDef; #define JS_EVAL_OPTIONS_VERSION 1 typedef struct JSEvalOptions { int version; int eval_flags; const char *filename; int line_num; // can add new fields in ABI-compatible manner by incrementing JS_EVAL_OPTIONS_VERSION } JSEvalOptions; #define JS_INVALID_CLASS_ID 0 JS_EXTERN JSClassID JS_NewClassID(JSRuntime *rt, JSClassID *pclass_id); /* Returns the class ID if `v` is an object, otherwise returns JS_INVALID_CLASS_ID. */ JS_EXTERN JSClassID JS_GetClassID(JSValueConst v); JS_EXTERN int JS_NewClass(JSRuntime *rt, JSClassID class_id, const JSClassDef *class_def); JS_EXTERN bool JS_IsRegisteredClass(JSRuntime *rt, JSClassID class_id); /* value handling */ static js_force_inline JSValue JS_NewBool(JSContext *ctx, bool val) { (void)&ctx; return JS_MKVAL(JS_TAG_BOOL, (val != 0)); } static js_force_inline JSValue JS_NewInt32(JSContext *ctx, int32_t val) { (void)&ctx; return JS_MKVAL(JS_TAG_INT, val); } static js_force_inline JSValue JS_NewFloat64(JSContext *ctx, double val) { (void)&ctx; return __JS_NewFloat64(val); } static js_force_inline JSValue JS_NewCatchOffset(JSContext *ctx, int32_t val) { (void)&ctx; return JS_MKVAL(JS_TAG_CATCH_OFFSET, val); } static js_force_inline JSValue JS_NewInt64(JSContext *ctx, int64_t val) { JSValue v; if (val >= INT32_MIN && val <= INT32_MAX) { v = JS_NewInt32(ctx, (int32_t)val); } else { v = JS_NewFloat64(ctx, (double)val); } return v; } static js_force_inline JSValue JS_NewUint32(JSContext *ctx, uint32_t val) { JSValue v; if (val <= INT32_MAX) { v = JS_NewInt32(ctx, (int32_t)val); } else { v = JS_NewFloat64(ctx, (double)val); } return v; } JS_EXTERN JSValue JS_NewNumber(JSContext *ctx, double d); JS_EXTERN JSValue JS_NewBigInt64(JSContext *ctx, int64_t v); JS_EXTERN JSValue JS_NewBigUint64(JSContext *ctx, uint64_t v); static inline bool JS_IsNumber(JSValueConst v) { int tag = JS_VALUE_GET_TAG(v); return tag == JS_TAG_INT || JS_TAG_IS_FLOAT64(tag); } static inline bool JS_IsBigInt(JSContext *ctx, JSValueConst v) { (void)&ctx; return JS_VALUE_GET_TAG(v) == JS_TAG_BIG_INT; } static inline bool JS_IsBool(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_BOOL; } static inline bool JS_IsNull(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_NULL; } static inline bool JS_IsUndefined(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_UNDEFINED; } static inline bool JS_IsException(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_EXCEPTION; } static inline bool JS_IsUninitialized(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_UNINITIALIZED; } static inline bool JS_IsString(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_STRING; } static inline bool JS_IsSymbol(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_SYMBOL; } static inline bool JS_IsObject(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_OBJECT; } static inline bool JS_IsModule(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_MODULE; } JS_EXTERN JSValue JS_Throw(JSContext *ctx, JSValue obj); JS_EXTERN JSValue JS_GetException(JSContext *ctx); JS_EXTERN bool JS_HasException(JSContext *ctx); JS_EXTERN bool JS_IsError(JSContext *ctx, JSValueConst val); JS_EXTERN bool JS_IsUncatchableError(JSContext* ctx, JSValueConst val); JS_EXTERN void JS_SetUncatchableError(JSContext *ctx, JSValueConst val); JS_EXTERN void JS_ClearUncatchableError(JSContext *ctx, JSValueConst val); // Shorthand for: // JSValue exc = JS_GetException(ctx); // JS_ClearUncatchableError(ctx, exc); // JS_Throw(ctx, exc); JS_EXTERN void JS_ResetUncatchableError(JSContext *ctx); JS_EXTERN JSValue JS_NewError(JSContext *ctx); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowPlainError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowSyntaxError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowTypeError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowReferenceError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowRangeError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowInternalError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); JS_EXTERN JSValue JS_ThrowOutOfMemory(JSContext *ctx); JS_EXTERN void JS_FreeValue(JSContext *ctx, JSValue v); JS_EXTERN void JS_FreeValueRT(JSRuntime *rt, JSValue v); JS_EXTERN JSValue JS_DupValue(JSContext *ctx, JSValueConst v); JS_EXTERN JSValue JS_DupValueRT(JSRuntime *rt, JSValueConst v); JS_EXTERN int JS_ToBool(JSContext *ctx, JSValueConst val); /* return -1 for JS_EXCEPTION */ static inline JSValue JS_ToBoolean(JSContext *ctx, JSValueConst val) { return JS_NewBool(ctx, JS_ToBool(ctx, val)); } JS_EXTERN JSValue JS_ToNumber(JSContext *ctx, JSValueConst val); JS_EXTERN int JS_ToInt32(JSContext *ctx, int32_t *pres, JSValueConst val); static inline int JS_ToUint32(JSContext *ctx, uint32_t *pres, JSValueConst val) { return JS_ToInt32(ctx, (int32_t*)pres, val); } JS_EXTERN int JS_ToInt64(JSContext *ctx, int64_t *pres, JSValueConst val); JS_EXTERN int JS_ToIndex(JSContext *ctx, uint64_t *plen, JSValueConst val); JS_EXTERN int JS_ToFloat64(JSContext *ctx, double *pres, JSValueConst val); /* return an exception if 'val' is a Number */ JS_EXTERN int JS_ToBigInt64(JSContext *ctx, int64_t *pres, JSValueConst val); JS_EXTERN int JS_ToBigUint64(JSContext *ctx, uint64_t *pres, JSValueConst val); /* same as JS_ToInt64() but allow BigInt */ JS_EXTERN int JS_ToInt64Ext(JSContext *ctx, int64_t *pres, JSValueConst val); JS_EXTERN JSValue JS_NewStringLen(JSContext *ctx, const char *str1, size_t len1); static inline JSValue JS_NewString(JSContext *ctx, const char *str) { return JS_NewStringLen(ctx, str, strlen(str)); } JS_EXTERN JSValue JS_NewAtomString(JSContext *ctx, const char *str); JS_EXTERN JSValue JS_ToString(JSContext *ctx, JSValueConst val); JS_EXTERN JSValue JS_ToPropertyKey(JSContext *ctx, JSValueConst val); JS_EXTERN const char *JS_ToCStringLen2(JSContext *ctx, size_t *plen, JSValueConst val1, bool cesu8); static inline const char *JS_ToCStringLen(JSContext *ctx, size_t *plen, JSValueConst val1) { return JS_ToCStringLen2(ctx, plen, val1, 0); } static inline const char *JS_ToCString(JSContext *ctx, JSValueConst val1) { return JS_ToCStringLen2(ctx, NULL, val1, 0); } JS_EXTERN void JS_FreeCString(JSContext *ctx, const char *ptr); JS_EXTERN JSValue JS_NewObjectProtoClass(JSContext *ctx, JSValueConst proto, JSClassID class_id); JS_EXTERN JSValue JS_NewObjectClass(JSContext *ctx, int class_id); JS_EXTERN JSValue JS_NewObjectProto(JSContext *ctx, JSValueConst proto); JS_EXTERN JSValue JS_NewObject(JSContext *ctx); // takes ownership of the values JS_EXTERN JSValue JS_NewObjectFrom(JSContext *ctx, int count, const JSAtom *props, const JSValue *values); // takes ownership of the values JS_EXTERN JSValue JS_NewObjectFromStr(JSContext *ctx, int count, const char **props, const JSValue *values); JS_EXTERN JSValue JS_ToObject(JSContext *ctx, JSValueConst val); JS_EXTERN JSValue JS_ToObjectString(JSContext *ctx, JSValueConst val); JS_EXTERN bool JS_IsFunction(JSContext* ctx, JSValueConst val); JS_EXTERN bool JS_IsConstructor(JSContext* ctx, JSValueConst val); JS_EXTERN bool JS_SetConstructorBit(JSContext *ctx, JSValueConst func_obj, bool val); JS_EXTERN bool JS_IsRegExp(JSValueConst val); JS_EXTERN bool JS_IsMap(JSValueConst val); JS_EXTERN JSValue JS_NewArray(JSContext *ctx); // takes ownership of the values JS_EXTERN JSValue JS_NewArrayFrom(JSContext *ctx, int count, const JSValue *values); // reader beware: JS_IsArray used to "punch" through proxies and check // if the target object is an array but it no longer does; use JS_IsProxy // and JS_GetProxyTarget instead, and remember that the target itself can // also be a proxy, ad infinitum JS_EXTERN bool JS_IsArray(JSValueConst val); JS_EXTERN bool JS_IsProxy(JSValueConst val); JS_EXTERN JSValue JS_GetProxyTarget(JSContext *ctx, JSValueConst proxy); JS_EXTERN JSValue JS_GetProxyHandler(JSContext *ctx, JSValueConst proxy); JS_EXTERN JSValue JS_NewDate(JSContext *ctx, double epoch_ms); JS_EXTERN bool JS_IsDate(JSValueConst v); JS_EXTERN JSValue JS_GetProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop); JS_EXTERN JSValue JS_GetPropertyUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx); JS_EXTERN JSValue JS_GetPropertyInt64(JSContext *ctx, JSValueConst this_obj, int64_t idx); JS_EXTERN JSValue JS_GetPropertyStr(JSContext *ctx, JSValueConst this_obj, const char *prop); JS_EXTERN int JS_SetProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue val); JS_EXTERN int JS_SetPropertyUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx, JSValue val); JS_EXTERN int JS_SetPropertyInt64(JSContext *ctx, JSValueConst this_obj, int64_t idx, JSValue val); JS_EXTERN int JS_SetPropertyStr(JSContext *ctx, JSValueConst this_obj, const char *prop, JSValue val); JS_EXTERN int JS_HasProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop); JS_EXTERN int JS_IsExtensible(JSContext *ctx, JSValueConst obj); JS_EXTERN int JS_PreventExtensions(JSContext *ctx, JSValueConst obj); JS_EXTERN int JS_DeleteProperty(JSContext *ctx, JSValueConst obj, JSAtom prop, int flags); JS_EXTERN int JS_SetPrototype(JSContext *ctx, JSValueConst obj, JSValue proto_val); JS_EXTERN JSValue JS_GetPrototype(JSContext *ctx, JSValueConst val); JS_EXTERN int JS_GetLength(JSContext *ctx, JSValueConst obj, int64_t *pres); JS_EXTERN int JS_SetLength(JSContext *ctx, JSValueConst obj, int64_t len); JS_EXTERN int JS_SealObject(JSContext *ctx, JSValueConst obj); JS_EXTERN int JS_FreezeObject(JSContext *ctx, JSValueConst obj); #define JS_GPN_STRING_MASK (1 << 0) #define JS_GPN_SYMBOL_MASK (1 << 1) #define JS_GPN_PRIVATE_MASK (1 << 2) /* only include the enumerable properties */ #define JS_GPN_ENUM_ONLY (1 << 4) /* set theJSPropertyEnum.is_enumerable field */ #define JS_GPN_SET_ENUM (1 << 5) JS_EXTERN int JS_GetOwnPropertyNames(JSContext *ctx, JSPropertyEnum **ptab, uint32_t *plen, JSValueConst obj, int flags); JS_EXTERN int JS_GetOwnProperty(JSContext *ctx, JSPropertyDescriptor *desc, JSValueConst obj, JSAtom prop); JS_EXTERN void JS_FreePropertyEnum(JSContext *ctx, JSPropertyEnum *tab, uint32_t len); JS_EXTERN JSValue JS_Call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv); JS_EXTERN JSValue JS_Invoke(JSContext *ctx, JSValueConst this_val, JSAtom atom, int argc, JSValueConst *argv); JS_EXTERN JSValue JS_CallConstructor(JSContext *ctx, JSValueConst func_obj, int argc, JSValueConst *argv); JS_EXTERN JSValue JS_CallConstructor2(JSContext *ctx, JSValueConst func_obj, JSValueConst new_target, int argc, JSValueConst *argv); /* Try to detect if the input is a module. Returns true if parsing the input * as a module produces no syntax errors. It's a naive approach that is not * wholly infallible: non-strict classic scripts may _parse_ okay as a module * but not _execute_ as one (different runtime semantics.) Use with caution. * |input| can be either ASCII or UTF-8 encoded source code. */ JS_EXTERN bool JS_DetectModule(const char *input, size_t input_len); /* 'input' must be zero terminated i.e. input[input_len] = '\0'. */ JS_EXTERN JSValue JS_Eval(JSContext *ctx, const char *input, size_t input_len, const char *filename, int eval_flags); JS_EXTERN JSValue JS_Eval2(JSContext *ctx, const char *input, size_t input_len, JSEvalOptions *options); JS_EXTERN JSValue JS_EvalThis(JSContext *ctx, JSValueConst this_obj, const char *input, size_t input_len, const char *filename, int eval_flags); JS_EXTERN JSValue JS_EvalThis2(JSContext *ctx, JSValueConst this_obj, const char *input, size_t input_len, JSEvalOptions *options); JS_EXTERN JSValue JS_GetGlobalObject(JSContext *ctx); JS_EXTERN int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj); JS_EXTERN int JS_DefineProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags); JS_EXTERN int JS_DefinePropertyValue(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue val, int flags); JS_EXTERN int JS_DefinePropertyValueUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx, JSValue val, int flags); JS_EXTERN int JS_DefinePropertyValueStr(JSContext *ctx, JSValueConst this_obj, const char *prop, JSValue val, int flags); JS_EXTERN int JS_DefinePropertyGetSet(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue getter, JSValue setter, int flags); /* Only supported for custom classes, returns 0 on success < 0 otherwise. */ JS_EXTERN int JS_SetOpaque(JSValueConst obj, void *opaque); JS_EXTERN void *JS_GetOpaque(JSValueConst obj, JSClassID class_id); JS_EXTERN void *JS_GetOpaque2(JSContext *ctx, JSValueConst obj, JSClassID class_id); JS_EXTERN void *JS_GetAnyOpaque(JSValueConst obj, JSClassID *class_id); /* 'buf' must be zero terminated i.e. buf[buf_len] = '\0'. */ JS_EXTERN JSValue JS_ParseJSON(JSContext *ctx, const char *buf, size_t buf_len, const char *filename); JS_EXTERN JSValue JS_JSONStringify(JSContext *ctx, JSValueConst obj, JSValueConst replacer, JSValueConst space0); typedef void JSFreeArrayBufferDataFunc(JSRuntime *rt, void *opaque, void *ptr); JS_EXTERN JSValue JS_NewArrayBuffer(JSContext *ctx, uint8_t *buf, size_t len, JSFreeArrayBufferDataFunc *free_func, void *opaque, bool is_shared); JS_EXTERN JSValue JS_NewArrayBufferCopy(JSContext *ctx, const uint8_t *buf, size_t len); JS_EXTERN void JS_DetachArrayBuffer(JSContext *ctx, JSValueConst obj); JS_EXTERN uint8_t *JS_GetArrayBuffer(JSContext *ctx, size_t *psize, JSValueConst obj); JS_EXTERN bool JS_IsArrayBuffer(JSValueConst obj); JS_EXTERN uint8_t *JS_GetUint8Array(JSContext *ctx, size_t *psize, JSValueConst obj); typedef enum JSTypedArrayEnum { JS_TYPED_ARRAY_UINT8C = 0, JS_TYPED_ARRAY_INT8, JS_TYPED_ARRAY_UINT8, JS_TYPED_ARRAY_INT16, JS_TYPED_ARRAY_UINT16, JS_TYPED_ARRAY_INT32, JS_TYPED_ARRAY_UINT32, JS_TYPED_ARRAY_BIG_INT64, JS_TYPED_ARRAY_BIG_UINT64, JS_TYPED_ARRAY_FLOAT16, JS_TYPED_ARRAY_FLOAT32, JS_TYPED_ARRAY_FLOAT64, } JSTypedArrayEnum; JS_EXTERN JSValue JS_NewTypedArray(JSContext *ctx, int argc, JSValueConst *argv, JSTypedArrayEnum array_type); JS_EXTERN JSValue JS_GetTypedArrayBuffer(JSContext *ctx, JSValueConst obj, size_t *pbyte_offset, size_t *pbyte_length, size_t *pbytes_per_element); JS_EXTERN JSValue JS_NewUint8Array(JSContext *ctx, uint8_t *buf, size_t len, JSFreeArrayBufferDataFunc *free_func, void *opaque, bool is_shared); /* returns -1 if not a typed array otherwise return a JSTypedArrayEnum value */ JS_EXTERN int JS_GetTypedArrayType(JSValueConst obj); JS_EXTERN JSValue JS_NewUint8ArrayCopy(JSContext *ctx, const uint8_t *buf, size_t len); typedef struct { void *(*sab_alloc)(void *opaque, size_t size); void (*sab_free)(void *opaque, void *ptr); void (*sab_dup)(void *opaque, void *ptr); void *sab_opaque; } JSSharedArrayBufferFunctions; JS_EXTERN void JS_SetSharedArrayBufferFunctions(JSRuntime *rt, const JSSharedArrayBufferFunctions *sf); typedef enum JSPromiseStateEnum { JS_PROMISE_PENDING, JS_PROMISE_FULFILLED, JS_PROMISE_REJECTED, } JSPromiseStateEnum; JS_EXTERN JSValue JS_NewPromiseCapability(JSContext *ctx, JSValue *resolving_funcs); JS_EXTERN JSPromiseStateEnum JS_PromiseState(JSContext *ctx, JSValueConst promise); JS_EXTERN JSValue JS_PromiseResult(JSContext *ctx, JSValueConst promise); JS_EXTERN bool JS_IsPromise(JSValueConst val); JS_EXTERN JSValue JS_NewSymbol(JSContext *ctx, const char *description, bool is_global); /* is_handled = true means that the rejection is handled */ typedef void JSHostPromiseRejectionTracker(JSContext *ctx, JSValueConst promise, JSValueConst reason, bool is_handled, void *opaque); JS_EXTERN void JS_SetHostPromiseRejectionTracker(JSRuntime *rt, JSHostPromiseRejectionTracker *cb, void *opaque); /* return != 0 if the JS code needs to be interrupted */ typedef int JSInterruptHandler(JSRuntime *rt, void *opaque); JS_EXTERN void JS_SetInterruptHandler(JSRuntime *rt, JSInterruptHandler *cb, void *opaque); /* if can_block is true, Atomics.wait() can be used */ JS_EXTERN void JS_SetCanBlock(JSRuntime *rt, bool can_block); /* set the [IsHTMLDDA] internal slot */ JS_EXTERN void JS_SetIsHTMLDDA(JSContext *ctx, JSValueConst obj); typedef struct JSModuleDef JSModuleDef; /* return the module specifier (allocated with js_malloc()) or NULL if exception */ typedef char *JSModuleNormalizeFunc(JSContext *ctx, const char *module_base_name, const char *module_name, void *opaque); typedef JSModuleDef *JSModuleLoaderFunc(JSContext *ctx, const char *module_name, void *opaque); /* module_normalize = NULL is allowed and invokes the default module filename normalizer */ JS_EXTERN void JS_SetModuleLoaderFunc(JSRuntime *rt, JSModuleNormalizeFunc *module_normalize, JSModuleLoaderFunc *module_loader, void *opaque); /* return the import.meta object of a module */ JS_EXTERN JSValue JS_GetImportMeta(JSContext *ctx, JSModuleDef *m); JS_EXTERN JSAtom JS_GetModuleName(JSContext *ctx, JSModuleDef *m); JS_EXTERN JSValue JS_GetModuleNamespace(JSContext *ctx, JSModuleDef *m); /* JS Job support */ typedef JSValue JSJobFunc(JSContext *ctx, int argc, JSValueConst *argv); JS_EXTERN int JS_EnqueueJob(JSContext *ctx, JSJobFunc *job_func, int argc, JSValueConst *argv); JS_EXTERN bool JS_IsJobPending(JSRuntime *rt); JS_EXTERN int JS_ExecutePendingJob(JSRuntime *rt, JSContext **pctx); /* Structure to retrieve (de)serialized SharedArrayBuffer objects. */ typedef struct JSSABTab { uint8_t **tab; size_t len; } JSSABTab; /* Object Writer/Reader (currently only used to handle precompiled code) */ #define JS_WRITE_OBJ_BYTECODE (1 << 0) /* allow function/module */ #define JS_WRITE_OBJ_BSWAP (0) /* byte swapped output (obsolete, handled transparently) */ #define JS_WRITE_OBJ_SAB (1 << 2) /* allow SharedArrayBuffer */ #define JS_WRITE_OBJ_REFERENCE (1 << 3) /* allow object references to encode arbitrary object graph */ #define JS_WRITE_OBJ_STRIP_SOURCE (1 << 4) /* do not write source code information */ #define JS_WRITE_OBJ_STRIP_DEBUG (1 << 5) /* do not write debug information */ JS_EXTERN uint8_t *JS_WriteObject(JSContext *ctx, size_t *psize, JSValueConst obj, int flags); JS_EXTERN uint8_t *JS_WriteObject2(JSContext *ctx, size_t *psize, JSValueConst obj, int flags, JSSABTab *psab_tab); #define JS_READ_OBJ_BYTECODE (1 << 0) /* allow function/module */ #define JS_READ_OBJ_ROM_DATA (0) /* avoid duplicating 'buf' data (obsolete, broken by ICs) */ #define JS_READ_OBJ_SAB (1 << 2) /* allow SharedArrayBuffer */ #define JS_READ_OBJ_REFERENCE (1 << 3) /* allow object references */ JS_EXTERN JSValue JS_ReadObject(JSContext *ctx, const uint8_t *buf, size_t buf_len, int flags); JS_EXTERN JSValue JS_ReadObject2(JSContext *ctx, const uint8_t *buf, size_t buf_len, int flags, JSSABTab *psab_tab); /* instantiate and evaluate a bytecode function. Only used when reading a script or module with JS_ReadObject() */ JS_EXTERN JSValue JS_EvalFunction(JSContext *ctx, JSValue fun_obj); /* load the dependencies of the module 'obj'. Useful when JS_ReadObject() returns a module. */ JS_EXTERN int JS_ResolveModule(JSContext *ctx, JSValueConst obj); /* only exported for os.Worker() */ JS_EXTERN JSAtom JS_GetScriptOrModuleName(JSContext *ctx, int n_stack_levels); /* only exported for os.Worker() */ JS_EXTERN JSValue JS_LoadModule(JSContext *ctx, const char *basename, const char *filename); /* C function definition */ typedef enum JSCFunctionEnum { /* XXX: should rename for namespace isolation */ JS_CFUNC_generic, JS_CFUNC_generic_magic, JS_CFUNC_constructor, JS_CFUNC_constructor_magic, JS_CFUNC_constructor_or_func, JS_CFUNC_constructor_or_func_magic, JS_CFUNC_f_f, JS_CFUNC_f_f_f, JS_CFUNC_getter, JS_CFUNC_setter, JS_CFUNC_getter_magic, JS_CFUNC_setter_magic, JS_CFUNC_iterator_next, } JSCFunctionEnum; typedef union JSCFunctionType { JSCFunction *generic; JSValue (*generic_magic)(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic); JSCFunction *constructor; JSValue (*constructor_magic)(JSContext *ctx, JSValueConst new_target, int argc, JSValueConst *argv, int magic); JSCFunction *constructor_or_func; double (*f_f)(double); double (*f_f_f)(double, double); JSValue (*getter)(JSContext *ctx, JSValueConst this_val); JSValue (*setter)(JSContext *ctx, JSValueConst this_val, JSValueConst val); JSValue (*getter_magic)(JSContext *ctx, JSValueConst this_val, int magic); JSValue (*setter_magic)(JSContext *ctx, JSValueConst this_val, JSValueConst val, int magic); JSValue (*iterator_next)(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int *pdone, int magic); } JSCFunctionType; JS_EXTERN JSValue JS_NewCFunction2(JSContext *ctx, JSCFunction *func, const char *name, int length, JSCFunctionEnum cproto, int magic); JS_EXTERN JSValue JS_NewCFunction3(JSContext *ctx, JSCFunction *func, const char *name, int length, JSCFunctionEnum cproto, int magic, JSValue proto_val); JS_EXTERN JSValue JS_NewCFunctionData(JSContext *ctx, JSCFunctionData *func, int length, int magic, int data_len, JSValueConst *data); static inline JSValue JS_NewCFunction(JSContext *ctx, JSCFunction *func, const char *name, int length) { return JS_NewCFunction2(ctx, func, name, length, JS_CFUNC_generic, 0); } static inline JSValue JS_NewCFunctionMagic(JSContext *ctx, JSCFunctionMagic *func, const char *name, int length, JSCFunctionEnum cproto, int magic) { /* Used to squelch a -Wcast-function-type warning. */ JSCFunctionType ft; ft.generic_magic = func; return JS_NewCFunction2(ctx, ft.generic, name, length, cproto, magic); } JS_EXTERN void JS_SetConstructor(JSContext *ctx, JSValueConst func_obj, JSValueConst proto); /* C property definition */ typedef struct JSCFunctionListEntry { const char *name; /* pure ASCII or UTF-8 encoded */ uint8_t prop_flags; uint8_t def_type; int16_t magic; union { struct { uint8_t length; /* XXX: should move outside union */ uint8_t cproto; /* XXX: should move outside union */ JSCFunctionType cfunc; } func; struct { JSCFunctionType get; JSCFunctionType set; } getset; struct { const char *name; int base; } alias; struct { const struct JSCFunctionListEntry *tab; int len; } prop_list; const char *str; /* pure ASCII or UTF-8 encoded */ int32_t i32; int64_t i64; uint64_t u64; double f64; } u; } JSCFunctionListEntry; #define JS_DEF_CFUNC 0 #define JS_DEF_CGETSET 1 #define JS_DEF_CGETSET_MAGIC 2 #define JS_DEF_PROP_STRING 3 #define JS_DEF_PROP_INT32 4 #define JS_DEF_PROP_INT64 5 #define JS_DEF_PROP_DOUBLE 6 #define JS_DEF_PROP_UNDEFINED 7 #define JS_DEF_OBJECT 8 #define JS_DEF_ALIAS 9 /* Note: c++ does not like nested designators */ #define JS_CFUNC_DEF(name, length, func1) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, 0, { .func = { length, JS_CFUNC_generic, { .generic = func1 } } } } #define JS_CFUNC_DEF2(name, length, func1, prop_flags) { name, prop_flags, JS_DEF_CFUNC, 0, { .func = { length, JS_CFUNC_generic, { .generic = func1 } } } } #define JS_CFUNC_MAGIC_DEF(name, length, func1, magic) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, magic, { .func = { length, JS_CFUNC_generic_magic, { .generic_magic = func1 } } } } #define JS_CFUNC_SPECIAL_DEF(name, length, cproto, func1) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, 0, { .func = { length, JS_CFUNC_ ## cproto, { .cproto = func1 } } } } #define JS_ITERATOR_NEXT_DEF(name, length, func1, magic) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, magic, { .func = { length, JS_CFUNC_iterator_next, { .iterator_next = func1 } } } } #define JS_CGETSET_DEF(name, fgetter, fsetter) { name, JS_PROP_CONFIGURABLE, JS_DEF_CGETSET, 0, { .getset = { .get = { .getter = fgetter }, .set = { .setter = fsetter } } } } #define JS_CGETSET_DEF2(name, fgetter, fsetter, prop_flags) { name, prop_flags, JS_DEF_CGETSET, 0, { .getset = { .get = { .getter = fgetter }, .set = { .setter = fsetter } } } } #define JS_CGETSET_MAGIC_DEF(name, fgetter, fsetter, magic) { name, JS_PROP_CONFIGURABLE, JS_DEF_CGETSET_MAGIC, magic, { .getset = { .get = { .getter_magic = fgetter }, .set = { .setter_magic = fsetter } } } } #define JS_PROP_STRING_DEF(name, cstr, prop_flags) { name, prop_flags, JS_DEF_PROP_STRING, 0, { .str = cstr } } #define JS_PROP_INT32_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_INT32, 0, { .i32 = val } } #define JS_PROP_INT64_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_INT64, 0, { .i64 = val } } #define JS_PROP_DOUBLE_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_DOUBLE, 0, { .f64 = val } } #define JS_PROP_U2D_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_DOUBLE, 0, { .u64 = val } } #define JS_PROP_UNDEFINED_DEF(name, prop_flags) { name, prop_flags, JS_DEF_PROP_UNDEFINED, 0, { .i32 = 0 } } #define JS_OBJECT_DEF(name, tab, len, prop_flags) { name, prop_flags, JS_DEF_OBJECT, 0, { .prop_list = { tab, len } } } #define JS_ALIAS_DEF(name, from) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_ALIAS, 0, { .alias = { from, -1 } } } #define JS_ALIAS_BASE_DEF(name, from, base) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_ALIAS, 0, { .alias = { from, base } } } JS_EXTERN void JS_SetPropertyFunctionList(JSContext *ctx, JSValue obj, const JSCFunctionListEntry *tab, int len); /* C module definition */ typedef int JSModuleInitFunc(JSContext *ctx, JSModuleDef *m); JS_EXTERN JSModuleDef *JS_NewCModule(JSContext *ctx, const char *name_str, JSModuleInitFunc *func); /* can only be called before the module is instantiated */ JS_EXTERN int JS_AddModuleExport(JSContext *ctx, JSModuleDef *m, const char *name_str); JS_EXTERN int JS_AddModuleExportList(JSContext *ctx, JSModuleDef *m, const JSCFunctionListEntry *tab, int len); /* can only be called after the module is instantiated */ JS_EXTERN int JS_SetModuleExport(JSContext *ctx, JSModuleDef *m, const char *export_name, JSValue val); JS_EXTERN int JS_SetModuleExportList(JSContext *ctx, JSModuleDef *m, const JSCFunctionListEntry *tab, int len); /* Version */ #define QJS_VERSION_MAJOR 0 #define QJS_VERSION_MINOR 9 #define QJS_VERSION_PATCH 0 #define QJS_VERSION_SUFFIX "" JS_EXTERN const char* JS_GetVersion(void); /* Integration point for quickjs-libc.c, not for public use. */ JS_EXTERN uintptr_t js_std_cmd(int cmd, ...); #undef JS_EXTERN #undef js_force_inline #ifdef __cplusplus } /* extern "C" { */ #endif #endif /* QUICKJS_H */ /* * QuickJS Javascript Engine * * Copyright (c) 2017-2024 Fabrice Bellard * Copyright (c) 2017-2024 Charlie Gordon * Copyright (c) 2023-2025 Ben Noordhuis * Copyright (c) 2023-2025 Saúl Ibarra Corretgé * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include #include #include #include #include #include #if !defined(_MSC_VER) #include #if defined(_WIN32) #include #endif #endif #if defined(_WIN32) #include #endif #include #include #include #if defined(EMSCRIPTEN) || defined(_MSC_VER) #define DIRECT_DISPATCH 0 #else #define DIRECT_DISPATCH 1 #endif #if defined(__APPLE__) #define MALLOC_OVERHEAD 0 #else #define MALLOC_OVERHEAD 8 #endif #if defined(__NEWLIB__) #define NO_TM_GMTOFF #endif // atomic_store etc. are completely busted in recent versions of tcc; // somehow the compiler forgets to load |ptr| into %rdi when calling // the __atomic_*() helpers in its lib/stdatomic.c and lib/atomic.S #if !defined(__TINYC__) && !defined(EMSCRIPTEN) && !defined(__wasi__) && !__STDC_NO_ATOMICS__ #define CONFIG_ATOMICS #endif #ifndef __GNUC__ #define __extension__ #endif #ifndef NDEBUG #define ENABLE_DUMPS #endif //#define FORCE_GC_AT_MALLOC /* test the GC by forcing it before each object allocation */ #define check_dump_flag(rt, flag) ((rt->dump_flags & (flag +0)) == (flag +0)) #define STRINGIFY_(x) #x #define STRINGIFY(x) STRINGIFY_(x) #define QJS_VERSION_STRING \ STRINGIFY(QJS_VERSION_MAJOR) "." STRINGIFY(QJS_VERSION_MINOR) "." STRINGIFY(QJS_VERSION_PATCH) QJS_VERSION_SUFFIX const char* JS_GetVersion(void) { return QJS_VERSION_STRING; } #undef STRINFIGY_ #undef STRINGIFY static inline JSValueConst *vc(JSValue *vals) { return (JSValueConst *)vals; } static inline JSValue unsafe_unconst(JSValueConst v) { #ifdef JS_CHECK_JSVALUE return (JSValue)v; #else return v; #endif } static inline JSValueConst safe_const(JSValue v) { #ifdef JS_CHECK_JSVALUE return (JSValueConst)v; #else return v; #endif } enum { /* classid tag */ /* union usage | properties */ JS_CLASS_OBJECT = 1, /* must be first */ JS_CLASS_ARRAY, /* u.array | length */ JS_CLASS_ERROR, JS_CLASS_NUMBER, /* u.object_data */ JS_CLASS_STRING, /* u.object_data */ JS_CLASS_BOOLEAN, /* u.object_data */ JS_CLASS_SYMBOL, /* u.object_data */ JS_CLASS_ARGUMENTS, /* u.array | length */ JS_CLASS_MAPPED_ARGUMENTS, /* | length */ JS_CLASS_DATE, /* u.object_data */ JS_CLASS_MODULE_NS, JS_CLASS_C_FUNCTION, /* u.cfunc */ JS_CLASS_BYTECODE_FUNCTION, /* u.func */ JS_CLASS_BOUND_FUNCTION, /* u.bound_function */ JS_CLASS_C_FUNCTION_DATA, /* u.c_function_data_record */ JS_CLASS_GENERATOR_FUNCTION, /* u.func */ JS_CLASS_FOR_IN_ITERATOR, /* u.for_in_iterator */ JS_CLASS_REGEXP, /* u.regexp */ JS_CLASS_ARRAY_BUFFER, /* u.array_buffer */ JS_CLASS_SHARED_ARRAY_BUFFER, /* u.array_buffer */ JS_CLASS_UINT8C_ARRAY, /* u.array (typed_array) */ JS_CLASS_INT8_ARRAY, /* u.array (typed_array) */ JS_CLASS_UINT8_ARRAY, /* u.array (typed_array) */ JS_CLASS_INT16_ARRAY, /* u.array (typed_array) */ JS_CLASS_UINT16_ARRAY, /* u.array (typed_array) */ JS_CLASS_INT32_ARRAY, /* u.array (typed_array) */ JS_CLASS_UINT32_ARRAY, /* u.array (typed_array) */ JS_CLASS_BIG_INT64_ARRAY, /* u.array (typed_array) */ JS_CLASS_BIG_UINT64_ARRAY, /* u.array (typed_array) */ JS_CLASS_FLOAT16_ARRAY, /* u.array (typed_array) */ JS_CLASS_FLOAT32_ARRAY, /* u.array (typed_array) */ JS_CLASS_FLOAT64_ARRAY, /* u.array (typed_array) */ JS_CLASS_DATAVIEW, /* u.typed_array */ JS_CLASS_BIG_INT, /* u.object_data */ JS_CLASS_MAP, /* u.map_state */ JS_CLASS_SET, /* u.map_state */ JS_CLASS_WEAKMAP, /* u.map_state */ JS_CLASS_WEAKSET, /* u.map_state */ JS_CLASS_ITERATOR, JS_CLASS_ITERATOR_HELPER, /* u.iterator_helper_data */ JS_CLASS_ITERATOR_WRAP, /* u.iterator_wrap_data */ JS_CLASS_MAP_ITERATOR, /* u.map_iterator_data */ JS_CLASS_SET_ITERATOR, /* u.map_iterator_data */ JS_CLASS_ARRAY_ITERATOR, /* u.array_iterator_data */ JS_CLASS_STRING_ITERATOR, /* u.array_iterator_data */ JS_CLASS_REGEXP_STRING_ITERATOR, /* u.regexp_string_iterator_data */ JS_CLASS_GENERATOR, /* u.generator_data */ JS_CLASS_PROXY, /* u.proxy_data */ JS_CLASS_PROMISE, /* u.promise_data */ JS_CLASS_PROMISE_RESOLVE_FUNCTION, /* u.promise_function_data */ JS_CLASS_PROMISE_REJECT_FUNCTION, /* u.promise_function_data */ JS_CLASS_ASYNC_FUNCTION, /* u.func */ JS_CLASS_ASYNC_FUNCTION_RESOLVE, /* u.async_function_data */ JS_CLASS_ASYNC_FUNCTION_REJECT, /* u.async_function_data */ JS_CLASS_ASYNC_FROM_SYNC_ITERATOR, /* u.async_from_sync_iterator_data */ JS_CLASS_ASYNC_GENERATOR_FUNCTION, /* u.func */ JS_CLASS_ASYNC_GENERATOR, /* u.async_generator_data */ JS_CLASS_WEAK_REF, JS_CLASS_FINALIZATION_REGISTRY, JS_CLASS_CALL_SITE, JS_CLASS_INIT_COUNT, /* last entry for predefined classes */ }; /* number of typed array types */ #define JS_TYPED_ARRAY_COUNT (JS_CLASS_FLOAT64_ARRAY - JS_CLASS_UINT8C_ARRAY + 1) static uint8_t const typed_array_size_log2[JS_TYPED_ARRAY_COUNT]; #define typed_array_size_log2(classid) (typed_array_size_log2[(classid)- JS_CLASS_UINT8C_ARRAY]) typedef enum JSErrorEnum { JS_EVAL_ERROR, JS_RANGE_ERROR, JS_REFERENCE_ERROR, JS_SYNTAX_ERROR, JS_TYPE_ERROR, JS_URI_ERROR, JS_INTERNAL_ERROR, JS_AGGREGATE_ERROR, JS_NATIVE_ERROR_COUNT, /* number of different NativeError objects */ JS_PLAIN_ERROR = JS_NATIVE_ERROR_COUNT } JSErrorEnum; #define JS_MAX_LOCAL_VARS 65535 #define JS_STACK_SIZE_MAX 65534 #define JS_STRING_LEN_MAX ((1 << 30) - 1) #define __exception __attribute__((warn_unused_result)) typedef struct JSShape JSShape; typedef struct JSString JSString; typedef struct JSString JSAtomStruct; #define JS_VALUE_GET_STRING(v) ((JSString *)JS_VALUE_GET_PTR(v)) typedef enum { JS_GC_PHASE_NONE, JS_GC_PHASE_DECREF, JS_GC_PHASE_REMOVE_CYCLES, } JSGCPhaseEnum; typedef struct JSMallocState { size_t malloc_count; size_t malloc_size; size_t malloc_limit; void *opaque; /* user opaque */ } JSMallocState; typedef struct JSRuntimeFinalizerState { struct JSRuntimeFinalizerState *next; JSRuntimeFinalizer *finalizer; void *arg; } JSRuntimeFinalizerState; struct JSRuntime { JSMallocFunctions mf; JSMallocState malloc_state; const char *rt_info; int atom_hash_size; /* power of two */ int atom_count; int atom_size; int atom_count_resize; /* resize hash table at this count */ uint32_t *atom_hash; JSAtomStruct **atom_array; int atom_free_index; /* 0 = none */ JSClassID js_class_id_alloc; /* counter for user defined classes */ int class_count; /* size of class_array */ JSClass *class_array; struct list_head context_list; /* list of JSContext.link */ /* list of JSGCObjectHeader.link. List of allocated GC objects (used by the garbage collector) */ struct list_head gc_obj_list; /* list of JSGCObjectHeader.link. Used during JS_FreeValueRT() */ struct list_head gc_zero_ref_count_list; struct list_head tmp_obj_list; /* used during GC */ JSGCPhaseEnum gc_phase : 8; size_t malloc_gc_threshold; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS struct list_head string_list; /* list of JSString.link */ #endif /* stack limitation */ uintptr_t stack_size; /* in bytes, 0 if no limit */ uintptr_t stack_top; uintptr_t stack_limit; /* lower stack limit */ JSValue current_exception; /* true if inside an out of memory error, to avoid recursing */ bool in_out_of_memory; /* true if inside build_backtrace, to avoid recursing */ bool in_build_stack_trace; /* true if inside JS_FreeRuntime */ bool in_free; struct JSStackFrame *current_stack_frame; JSInterruptHandler *interrupt_handler; void *interrupt_opaque; JSHostPromiseRejectionTracker *host_promise_rejection_tracker; void *host_promise_rejection_tracker_opaque; struct list_head job_list; /* list of JSJobEntry.link */ JSModuleNormalizeFunc *module_normalize_func; JSModuleLoaderFunc *module_loader_func; void *module_loader_opaque; /* timestamp for internal use in module evaluation */ int64_t module_async_evaluation_next_timestamp; /* used to allocate, free and clone SharedArrayBuffers */ JSSharedArrayBufferFunctions sab_funcs; bool can_block; /* true if Atomics.wait can block */ uint32_t dump_flags : 24; /* Shape hash table */ int shape_hash_bits; int shape_hash_size; int shape_hash_count; /* number of hashed shapes */ JSShape **shape_hash; bf_context_t bf_ctx; void *user_opaque; void *libc_opaque; JSRuntimeFinalizerState *finalizers; }; struct JSClass { uint32_t class_id; /* 0 means free entry */ JSAtom class_name; JSClassFinalizer *finalizer; JSClassGCMark *gc_mark; JSClassCall *call; /* pointers for exotic behavior, can be NULL if none are present */ const JSClassExoticMethods *exotic; }; typedef struct JSStackFrame { struct JSStackFrame *prev_frame; /* NULL if first stack frame */ JSValue cur_func; /* current function, JS_UNDEFINED if the frame is detached */ JSValue *arg_buf; /* arguments */ JSValue *var_buf; /* variables */ struct list_head var_ref_list; /* list of JSVarRef.link */ uint8_t *cur_pc; /* only used in bytecode functions : PC of the instruction after the call */ uint32_t arg_count : 31; uint32_t is_strict_mode : 1; /* only used in generators. Current stack pointer value. NULL if the function is running. */ JSValue *cur_sp; } JSStackFrame; typedef enum { JS_GC_OBJ_TYPE_JS_OBJECT, JS_GC_OBJ_TYPE_FUNCTION_BYTECODE, JS_GC_OBJ_TYPE_SHAPE, JS_GC_OBJ_TYPE_VAR_REF, JS_GC_OBJ_TYPE_ASYNC_FUNCTION, JS_GC_OBJ_TYPE_JS_CONTEXT, } JSGCObjectTypeEnum; /* header for GC objects. GC objects are C data structures with a reference count that can reference other GC objects. JS Objects are a particular type of GC object. */ struct JSGCObjectHeader { int ref_count; /* must come first, 32-bit */ JSGCObjectTypeEnum gc_obj_type : 4; uint8_t mark : 4; /* used by the GC */ uint8_t dummy1; /* not used by the GC */ uint16_t dummy2; /* not used by the GC */ struct list_head link; }; typedef struct JSVarRef { union { JSGCObjectHeader header; /* must come first */ struct { int __gc_ref_count; /* corresponds to header.ref_count */ uint8_t __gc_mark; /* corresponds to header.mark/gc_obj_type */ /* 0 : the JSVarRef is on the stack. header.link is an element of JSStackFrame.var_ref_list. 1 : the JSVarRef is detached. header.link has the normal meanning */ uint8_t is_detached : 1; uint8_t is_arg : 1; uint16_t var_idx; /* index of the corresponding function variable on the stack */ }; }; JSValue *pvalue; /* pointer to the value, either on the stack or to 'value' */ JSValue value; /* used when the variable is no longer on the stack */ } JSVarRef; typedef struct JSRefCountHeader { int ref_count; } JSRefCountHeader; /* the same structure is used for big integers. Big integers are never infinite or NaNs */ typedef struct JSBigInt { JSRefCountHeader header; /* must come first, 32-bit */ bf_t num; } JSBigInt; typedef enum { JS_AUTOINIT_ID_PROTOTYPE, JS_AUTOINIT_ID_MODULE_NS, JS_AUTOINIT_ID_PROP, } JSAutoInitIDEnum; /* must be large enough to have a negligible runtime cost and small enough to call the interrupt callback often. */ #define JS_INTERRUPT_COUNTER_INIT 10000 struct JSContext { JSGCObjectHeader header; /* must come first */ JSRuntime *rt; struct list_head link; uint16_t binary_object_count; int binary_object_size; JSShape *array_shape; /* initial shape for Array objects */ JSValue *class_proto; JSValue function_proto; JSValue function_ctor; JSValue array_ctor; JSValue regexp_ctor; JSValue promise_ctor; JSValue native_error_proto[JS_NATIVE_ERROR_COUNT]; JSValue error_ctor; JSValue error_back_trace; JSValue error_prepare_stack; JSValue error_stack_trace_limit; JSValue iterator_ctor; JSValue iterator_proto; JSValue async_iterator_proto; JSValue array_proto_values; JSValue throw_type_error; JSValue eval_obj; JSValue global_obj; /* global object */ JSValue global_var_obj; /* contains the global let/const definitions */ double time_origin; uint64_t random_state; bf_context_t *bf_ctx; /* points to rt->bf_ctx, shared by all contexts */ /* when the counter reaches zero, JSRutime.interrupt_handler is called */ int interrupt_counter; struct list_head loaded_modules; /* list of JSModuleDef.link */ /* if NULL, RegExp compilation is not supported */ JSValue (*compile_regexp)(JSContext *ctx, JSValueConst pattern, JSValueConst flags); /* if NULL, eval is not supported */ JSValue (*eval_internal)(JSContext *ctx, JSValueConst this_obj, const char *input, size_t input_len, const char *filename, int line, int flags, int scope_idx); void *user_opaque; }; typedef union JSFloat64Union { double d; uint64_t u64; uint32_t u32[2]; } JSFloat64Union; typedef enum { JS_WEAK_REF_KIND_MAP, JS_WEAK_REF_KIND_WEAK_REF, JS_WEAK_REF_KIND_FINALIZATION_REGISTRY_ENTRY, } JSWeakRefKindEnum; typedef struct JSWeakRefRecord { JSWeakRefKindEnum kind; struct JSWeakRefRecord *next_weak_ref; union { struct JSMapRecord *map_record; struct JSWeakRefData *weak_ref_data; struct JSFinRecEntry *fin_rec_entry; } u; } JSWeakRefRecord; enum { JS_ATOM_TYPE_STRING = 1, JS_ATOM_TYPE_GLOBAL_SYMBOL, JS_ATOM_TYPE_SYMBOL, JS_ATOM_TYPE_PRIVATE, }; enum { JS_ATOM_HASH_SYMBOL, JS_ATOM_HASH_PRIVATE, }; typedef enum { JS_ATOM_KIND_STRING, JS_ATOM_KIND_SYMBOL, JS_ATOM_KIND_PRIVATE, } JSAtomKindEnum; #define JS_ATOM_HASH_MASK ((1 << 30) - 1) struct JSString { JSRefCountHeader header; /* must come first, 32-bit */ uint32_t len : 31; uint8_t is_wide_char : 1; /* 0 = 8 bits, 1 = 16 bits characters */ /* for JS_ATOM_TYPE_SYMBOL: hash = 0, atom_type = 3, for JS_ATOM_TYPE_PRIVATE: hash = 1, atom_type = 3 XXX: could change encoding to have one more bit in hash */ uint32_t hash : 30; uint8_t atom_type : 2; /* != 0 if atom, JS_ATOM_TYPE_x */ uint32_t hash_next; /* atom_index for JS_ATOM_TYPE_SYMBOL */ JSWeakRefRecord *first_weak_ref; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS struct list_head link; /* string list */ #endif }; static inline uint8_t *str8(JSString *p) { return (void *)(p + 1); } static inline uint16_t *str16(JSString *p) { return (void *)(p + 1); } typedef struct JSClosureVar { uint8_t is_local : 1; uint8_t is_arg : 1; uint8_t is_const : 1; uint8_t is_lexical : 1; uint8_t var_kind : 4; /* see JSVarKindEnum */ /* 8 bits available */ uint16_t var_idx; /* is_local = true: index to a normal variable of the parent function. otherwise: index to a closure variable of the parent function */ JSAtom var_name; } JSClosureVar; #define ARG_SCOPE_INDEX 1 #define ARG_SCOPE_END (-2) typedef struct JSVarScope { int parent; /* index into fd->scopes of the enclosing scope */ int first; /* index into fd->vars of the last variable in this scope */ } JSVarScope; typedef enum { /* XXX: add more variable kinds here instead of using bit fields */ JS_VAR_NORMAL, JS_VAR_FUNCTION_DECL, /* lexical var with function declaration */ JS_VAR_NEW_FUNCTION_DECL, /* lexical var with async/generator function declaration */ JS_VAR_CATCH, JS_VAR_FUNCTION_NAME, /* function expression name */ JS_VAR_PRIVATE_FIELD, JS_VAR_PRIVATE_METHOD, JS_VAR_PRIVATE_GETTER, JS_VAR_PRIVATE_SETTER, /* must come after JS_VAR_PRIVATE_GETTER */ JS_VAR_PRIVATE_GETTER_SETTER, /* must come after JS_VAR_PRIVATE_SETTER */ } JSVarKindEnum; /* XXX: could use a different structure in bytecode functions to save memory */ typedef struct JSVarDef { JSAtom var_name; /* index into fd->scopes of this variable lexical scope */ int scope_level; /* during compilation: - if scope_level = 0: scope in which the variable is defined - if scope_level != 0: index into fd->vars of the next variable in the same or enclosing lexical scope in a bytecode function: index into fd->vars of the next variable in the same or enclosing lexical scope */ int scope_next; uint8_t is_const : 1; uint8_t is_lexical : 1; uint8_t is_captured : 1; uint8_t is_static_private : 1; /* only used during private class field parsing */ uint8_t var_kind : 4; /* see JSVarKindEnum */ /* only used during compilation: function pool index for lexical variables with var_kind = JS_VAR_FUNCTION_DECL/JS_VAR_NEW_FUNCTION_DECL or scope level of the definition of the 'var' variables (they have scope_level = 0) */ int func_pool_idx : 24; /* only used during compilation : index in the constant pool for hoisted function definition */ } JSVarDef; /* for the encoding of the pc2line table */ #define PC2LINE_BASE (-1) #define PC2LINE_RANGE 5 #define PC2LINE_OP_FIRST 1 #define PC2LINE_DIFF_PC_MAX ((255 - PC2LINE_OP_FIRST) / PC2LINE_RANGE) typedef enum JSFunctionKindEnum { JS_FUNC_NORMAL = 0, JS_FUNC_GENERATOR = (1 << 0), JS_FUNC_ASYNC = (1 << 1), JS_FUNC_ASYNC_GENERATOR = (JS_FUNC_GENERATOR | JS_FUNC_ASYNC), } JSFunctionKindEnum; typedef struct JSFunctionBytecode { JSGCObjectHeader header; /* must come first */ uint8_t is_strict_mode : 1; uint8_t has_prototype : 1; /* true if a prototype field is necessary */ uint8_t has_simple_parameter_list : 1; uint8_t is_derived_class_constructor : 1; /* true if home_object needs to be initialized */ uint8_t need_home_object : 1; uint8_t func_kind : 2; uint8_t new_target_allowed : 1; uint8_t super_call_allowed : 1; uint8_t super_allowed : 1; uint8_t arguments_allowed : 1; uint8_t backtrace_barrier : 1; /* stop backtrace on this function */ /* XXX: 5 bits available */ uint8_t *byte_code_buf; /* (self pointer) */ int byte_code_len; JSAtom func_name; JSVarDef *vardefs; /* arguments + local variables (arg_count + var_count) (self pointer) */ JSClosureVar *closure_var; /* list of variables in the closure (self pointer) */ uint16_t arg_count; uint16_t var_count; uint16_t defined_arg_count; /* for length function property */ uint16_t stack_size; /* maximum stack size */ JSContext *realm; /* function realm */ JSValue *cpool; /* constant pool (self pointer) */ int cpool_count; int closure_var_count; JSAtom filename; int line_num; int col_num; int source_len; int pc2line_len; uint8_t *pc2line_buf; char *source; } JSFunctionBytecode; typedef struct JSBoundFunction { JSValue func_obj; JSValue this_val; int argc; JSValue argv[]; } JSBoundFunction; typedef enum JSIteratorKindEnum { JS_ITERATOR_KIND_KEY, JS_ITERATOR_KIND_VALUE, JS_ITERATOR_KIND_KEY_AND_VALUE, } JSIteratorKindEnum; typedef enum JSIteratorHelperKindEnum { JS_ITERATOR_HELPER_KIND_DROP, JS_ITERATOR_HELPER_KIND_EVERY, JS_ITERATOR_HELPER_KIND_FILTER, JS_ITERATOR_HELPER_KIND_FIND, JS_ITERATOR_HELPER_KIND_FLAT_MAP, JS_ITERATOR_HELPER_KIND_FOR_EACH, JS_ITERATOR_HELPER_KIND_MAP, JS_ITERATOR_HELPER_KIND_SOME, JS_ITERATOR_HELPER_KIND_TAKE, } JSIteratorHelperKindEnum; typedef struct JSForInIterator { JSValue obj; bool is_array; uint32_t array_length; uint32_t idx; } JSForInIterator; typedef struct JSRegExp { JSString *pattern; JSString *bytecode; /* also contains the flags */ } JSRegExp; typedef struct JSProxyData { JSValue target; JSValue handler; uint8_t is_func; uint8_t is_revoked; } JSProxyData; typedef struct JSArrayBuffer { int byte_length; /* 0 if detached */ int max_byte_length; /* -1 if not resizable; >= byte_length otherwise */ uint8_t detached; uint8_t shared; /* if shared, the array buffer cannot be detached */ uint8_t *data; /* NULL if detached */ struct list_head array_list; void *opaque; JSFreeArrayBufferDataFunc *free_func; } JSArrayBuffer; typedef struct JSTypedArray { struct list_head link; /* link to arraybuffer */ JSObject *obj; /* back pointer to the TypedArray/DataView object */ JSObject *buffer; /* based array buffer */ uint32_t offset; /* byte offset in the array buffer */ uint32_t length; /* byte length in the array buffer */ bool track_rab; /* auto-track length of backing array buffer */ } JSTypedArray; typedef struct JSAsyncFunctionState { JSValue this_val; /* 'this' generator argument */ int argc; /* number of function arguments */ bool throw_flag; /* used to throw an exception in JS_CallInternal() */ JSStackFrame frame; } JSAsyncFunctionState; /* XXX: could use an object instead to avoid the JS_TAG_ASYNC_FUNCTION tag for the GC */ typedef struct JSAsyncFunctionData { JSGCObjectHeader header; /* must come first */ JSValue resolving_funcs[2]; bool is_active; /* true if the async function state is valid */ JSAsyncFunctionState func_state; } JSAsyncFunctionData; typedef struct JSReqModuleEntry { JSAtom module_name; JSModuleDef *module; /* used using resolution */ } JSReqModuleEntry; typedef enum JSExportTypeEnum { JS_EXPORT_TYPE_LOCAL, JS_EXPORT_TYPE_INDIRECT, } JSExportTypeEnum; typedef struct JSExportEntry { union { struct { int var_idx; /* closure variable index */ JSVarRef *var_ref; /* if != NULL, reference to the variable */ } local; /* for local export */ int req_module_idx; /* module for indirect export */ } u; JSExportTypeEnum export_type; JSAtom local_name; /* '*' if export ns from. not used for local export after compilation */ JSAtom export_name; /* exported variable name */ } JSExportEntry; typedef struct JSStarExportEntry { int req_module_idx; /* in req_module_entries */ } JSStarExportEntry; typedef struct JSImportEntry { int var_idx; /* closure variable index */ JSAtom import_name; int req_module_idx; /* in req_module_entries */ } JSImportEntry; typedef enum { JS_MODULE_STATUS_UNLINKED, JS_MODULE_STATUS_LINKING, JS_MODULE_STATUS_LINKED, JS_MODULE_STATUS_EVALUATING, JS_MODULE_STATUS_EVALUATING_ASYNC, JS_MODULE_STATUS_EVALUATED, } JSModuleStatus; struct JSModuleDef { JSRefCountHeader header; /* must come first, 32-bit */ JSAtom module_name; struct list_head link; JSReqModuleEntry *req_module_entries; int req_module_entries_count; int req_module_entries_size; JSExportEntry *export_entries; int export_entries_count; int export_entries_size; JSStarExportEntry *star_export_entries; int star_export_entries_count; int star_export_entries_size; JSImportEntry *import_entries; int import_entries_count; int import_entries_size; JSValue module_ns; JSValue func_obj; /* only used for JS modules */ JSModuleInitFunc *init_func; /* only used for C modules */ bool has_tla; /* true if func_obj contains await */ bool resolved; bool func_created; JSModuleStatus status : 8; /* temp use during js_module_link() & js_module_evaluate() */ int dfs_index, dfs_ancestor_index; JSModuleDef *stack_prev; /* temp use during js_module_evaluate() */ JSModuleDef **async_parent_modules; int async_parent_modules_count; int async_parent_modules_size; int pending_async_dependencies; bool async_evaluation; int64_t async_evaluation_timestamp; JSModuleDef *cycle_root; JSValue promise; /* corresponds to spec field: capability */ JSValue resolving_funcs[2]; /* corresponds to spec field: capability */ /* true if evaluation yielded an exception. It is saved in eval_exception */ bool eval_has_exception; JSValue eval_exception; JSValue meta_obj; /* for import.meta */ }; typedef struct JSJobEntry { struct list_head link; JSContext *ctx; JSJobFunc *job_func; int argc; JSValue argv[]; } JSJobEntry; typedef struct JSProperty { union { JSValue value; /* JS_PROP_NORMAL */ struct { /* JS_PROP_GETSET */ JSObject *getter; /* NULL if undefined */ JSObject *setter; /* NULL if undefined */ } getset; JSVarRef *var_ref; /* JS_PROP_VARREF */ struct { /* JS_PROP_AUTOINIT */ /* in order to use only 2 pointers, we compress the realm and the init function pointer */ uintptr_t realm_and_id; /* realm and init_id (JS_AUTOINIT_ID_x) in the 2 low bits */ void *opaque; } init; } u; } JSProperty; #define JS_PROP_INITIAL_SIZE 2 #define JS_PROP_INITIAL_HASH_SIZE 4 /* must be a power of two */ #define JS_ARRAY_INITIAL_SIZE 2 typedef struct JSShapeProperty { uint32_t hash_next : 26; /* 0 if last in list */ uint32_t flags : 6; /* JS_PROP_XXX */ JSAtom atom; /* JS_ATOM_NULL = free property entry */ } JSShapeProperty; struct JSShape { /* hash table of size hash_mask + 1 before the start of the structure (see prop_hash_end()). */ JSGCObjectHeader header; /* true if the shape is inserted in the shape hash table. If not, JSShape.hash is not valid */ uint8_t is_hashed; /* If true, the shape may have small array index properties 'n' with 0 <= n <= 2^31-1. If false, the shape is guaranteed not to have small array index properties */ uint8_t has_small_array_index; uint32_t hash; /* current hash value */ uint32_t prop_hash_mask; int prop_size; /* allocated properties */ int prop_count; /* include deleted properties */ int deleted_prop_count; JSShape *shape_hash_next; /* in JSRuntime.shape_hash[h] list */ JSObject *proto; JSShapeProperty prop[]; /* prop_size elements */ }; struct JSObject { union { JSGCObjectHeader header; struct { int __gc_ref_count; /* corresponds to header.ref_count */ uint8_t __gc_mark; /* corresponds to header.mark/gc_obj_type */ uint8_t extensible : 1; uint8_t free_mark : 1; /* only used when freeing objects with cycles */ uint8_t is_exotic : 1; /* true if object has exotic property handlers */ uint8_t fast_array : 1; /* true if u.array is used for get/put (for JS_CLASS_ARRAY, JS_CLASS_ARGUMENTS and typed arrays) */ uint8_t is_constructor : 1; /* true if object is a constructor function */ uint8_t is_uncatchable_error : 1; /* if true, error is not catchable */ uint8_t tmp_mark : 1; /* used in JS_WriteObjectRec() */ uint8_t is_HTMLDDA : 1; /* specific annex B IsHtmlDDA behavior */ uint16_t class_id; /* see JS_CLASS_x */ }; }; /* byte offsets: 16/24 */ JSShape *shape; /* prototype and property names + flag */ JSProperty *prop; /* array of properties */ /* byte offsets: 24/40 */ JSWeakRefRecord *first_weak_ref; /* byte offsets: 28/48 */ union { void *opaque; struct JSBoundFunction *bound_function; /* JS_CLASS_BOUND_FUNCTION */ struct JSCFunctionDataRecord *c_function_data_record; /* JS_CLASS_C_FUNCTION_DATA */ struct JSForInIterator *for_in_iterator; /* JS_CLASS_FOR_IN_ITERATOR */ struct JSArrayBuffer *array_buffer; /* JS_CLASS_ARRAY_BUFFER, JS_CLASS_SHARED_ARRAY_BUFFER */ struct JSTypedArray *typed_array; /* JS_CLASS_UINT8C_ARRAY..JS_CLASS_DATAVIEW */ struct JSMapState *map_state; /* JS_CLASS_MAP..JS_CLASS_WEAKSET */ struct JSMapIteratorData *map_iterator_data; /* JS_CLASS_MAP_ITERATOR, JS_CLASS_SET_ITERATOR */ struct JSArrayIteratorData *array_iterator_data; /* JS_CLASS_ARRAY_ITERATOR, JS_CLASS_STRING_ITERATOR */ struct JSRegExpStringIteratorData *regexp_string_iterator_data; /* JS_CLASS_REGEXP_STRING_ITERATOR */ struct JSGeneratorData *generator_data; /* JS_CLASS_GENERATOR */ struct JSIteratorHelperData *iterator_helper_data; /* JS_CLASS_ITERATOR_HELPER */ struct JSIteratorWrapData *iterator_wrap_data; /* JS_CLASS_ITERATOR_WRAP */ struct JSProxyData *proxy_data; /* JS_CLASS_PROXY */ struct JSPromiseData *promise_data; /* JS_CLASS_PROMISE */ struct JSPromiseFunctionData *promise_function_data; /* JS_CLASS_PROMISE_RESOLVE_FUNCTION, JS_CLASS_PROMISE_REJECT_FUNCTION */ struct JSAsyncFunctionData *async_function_data; /* JS_CLASS_ASYNC_FUNCTION_RESOLVE, JS_CLASS_ASYNC_FUNCTION_REJECT */ struct JSAsyncFromSyncIteratorData *async_from_sync_iterator_data; /* JS_CLASS_ASYNC_FROM_SYNC_ITERATOR */ struct JSAsyncGeneratorData *async_generator_data; /* JS_CLASS_ASYNC_GENERATOR */ struct { /* JS_CLASS_BYTECODE_FUNCTION: 12/24 bytes */ /* also used by JS_CLASS_GENERATOR_FUNCTION, JS_CLASS_ASYNC_FUNCTION and JS_CLASS_ASYNC_GENERATOR_FUNCTION */ struct JSFunctionBytecode *function_bytecode; JSVarRef **var_refs; JSObject *home_object; /* for 'super' access */ } func; struct { /* JS_CLASS_C_FUNCTION: 12/20 bytes */ JSContext *realm; JSCFunctionType c_function; uint8_t length; uint8_t cproto; int16_t magic; } cfunc; /* array part for fast arrays and typed arrays */ struct { /* JS_CLASS_ARRAY, JS_CLASS_ARGUMENTS, JS_CLASS_UINT8C_ARRAY..JS_CLASS_FLOAT64_ARRAY */ union { uint32_t size; /* JS_CLASS_ARRAY, JS_CLASS_ARGUMENTS */ struct JSTypedArray *typed_array; /* JS_CLASS_UINT8C_ARRAY..JS_CLASS_FLOAT64_ARRAY */ } u1; union { JSValue *values; /* JS_CLASS_ARRAY, JS_CLASS_ARGUMENTS */ void *ptr; /* JS_CLASS_UINT8C_ARRAY..JS_CLASS_FLOAT64_ARRAY */ int8_t *int8_ptr; /* JS_CLASS_INT8_ARRAY */ uint8_t *uint8_ptr; /* JS_CLASS_UINT8_ARRAY, JS_CLASS_UINT8C_ARRAY */ int16_t *int16_ptr; /* JS_CLASS_INT16_ARRAY */ uint16_t *uint16_ptr; /* JS_CLASS_UINT16_ARRAY */ int32_t *int32_ptr; /* JS_CLASS_INT32_ARRAY */ uint32_t *uint32_ptr; /* JS_CLASS_UINT32_ARRAY */ int64_t *int64_ptr; /* JS_CLASS_INT64_ARRAY */ uint64_t *uint64_ptr; /* JS_CLASS_UINT64_ARRAY */ uint16_t *fp16_ptr; /* JS_CLASS_FLOAT16_ARRAY */ float *float_ptr; /* JS_CLASS_FLOAT32_ARRAY */ double *double_ptr; /* JS_CLASS_FLOAT64_ARRAY */ } u; uint32_t count; /* <= 2^31-1. 0 for a detached typed array */ } array; /* 12/20 bytes */ JSRegExp regexp; /* JS_CLASS_REGEXP: 8/16 bytes */ JSValue object_data; /* for JS_SetObjectData(): 8/16/16 bytes */ } u; /* byte sizes: 40/48/72 */ }; typedef struct JSCallSiteData { JSValue filename; JSValue func; JSValue func_name; bool native; int line_num; int col_num; } JSCallSiteData; enum { __JS_ATOM_NULL = JS_ATOM_NULL, #define DEF(name, str) JS_ATOM_ ## name, /* * QuickJS atom definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef DEF /* Note: first atoms are considered as keywords in the parser */ DEF(null, "null") /* must be first */ DEF(false, "false") DEF(true, "true") DEF(if, "if") DEF(else, "else") DEF(return, "return") DEF(var, "var") DEF(this, "this") DEF(delete, "delete") DEF(void, "void") DEF(typeof, "typeof") DEF(new, "new") DEF(in, "in") DEF(instanceof, "instanceof") DEF(do, "do") DEF(while, "while") DEF(for, "for") DEF(break, "break") DEF(continue, "continue") DEF(switch, "switch") DEF(case, "case") DEF(default, "default") DEF(throw, "throw") DEF(try, "try") DEF(catch, "catch") DEF(finally, "finally") DEF(function, "function") DEF(debugger, "debugger") DEF(with, "with") /* FutureReservedWord */ DEF(class, "class") DEF(const, "const") DEF(enum, "enum") DEF(export, "export") DEF(extends, "extends") DEF(import, "import") DEF(super, "super") /* FutureReservedWords when parsing strict mode code */ DEF(implements, "implements") DEF(interface, "interface") DEF(let, "let") DEF(package, "package") DEF(private, "private") DEF(protected, "protected") DEF(public, "public") DEF(static, "static") DEF(yield, "yield") DEF(await, "await") /* empty string */ DEF(empty_string, "") /* identifiers */ DEF(keys, "keys") DEF(size, "size") DEF(length, "length") DEF(message, "message") DEF(cause, "cause") DEF(errors, "errors") DEF(stack, "stack") DEF(name, "name") DEF(toString, "toString") DEF(toLocaleString, "toLocaleString") DEF(valueOf, "valueOf") DEF(eval, "eval") DEF(prototype, "prototype") DEF(constructor, "constructor") DEF(configurable, "configurable") DEF(writable, "writable") DEF(enumerable, "enumerable") DEF(value, "value") DEF(get, "get") DEF(set, "set") DEF(of, "of") DEF(__proto__, "__proto__") DEF(undefined, "undefined") DEF(number, "number") DEF(boolean, "boolean") DEF(string, "string") DEF(object, "object") DEF(symbol, "symbol") DEF(integer, "integer") DEF(unknown, "unknown") DEF(arguments, "arguments") DEF(callee, "callee") DEF(caller, "caller") DEF(_eval_, "") DEF(_ret_, "") DEF(_var_, "") DEF(_arg_var_, "") DEF(_with_, "") DEF(lastIndex, "lastIndex") DEF(target, "target") DEF(index, "index") DEF(input, "input") DEF(defineProperties, "defineProperties") DEF(apply, "apply") DEF(join, "join") DEF(concat, "concat") DEF(split, "split") DEF(construct, "construct") DEF(getPrototypeOf, "getPrototypeOf") DEF(setPrototypeOf, "setPrototypeOf") DEF(isExtensible, "isExtensible") DEF(preventExtensions, "preventExtensions") DEF(has, "has") DEF(deleteProperty, "deleteProperty") DEF(defineProperty, "defineProperty") DEF(getOwnPropertyDescriptor, "getOwnPropertyDescriptor") DEF(ownKeys, "ownKeys") DEF(add, "add") DEF(done, "done") DEF(next, "next") DEF(values, "values") DEF(source, "source") DEF(flags, "flags") DEF(global, "global") DEF(unicode, "unicode") DEF(raw, "raw") DEF(new_target, "new.target") DEF(this_active_func, "this.active_func") DEF(home_object, "") DEF(computed_field, "") DEF(static_computed_field, "") /* must come after computed_fields */ DEF(class_fields_init, "") DEF(brand, "") DEF(hash_constructor, "#constructor") DEF(as, "as") DEF(from, "from") DEF(meta, "meta") DEF(_default_, "*default*") DEF(_star_, "*") DEF(Module, "Module") DEF(then, "then") DEF(resolve, "resolve") DEF(reject, "reject") DEF(promise, "promise") DEF(proxy, "proxy") DEF(revoke, "revoke") DEF(async, "async") DEF(exec, "exec") DEF(groups, "groups") DEF(indices, "indices") DEF(status, "status") DEF(reason, "reason") DEF(globalThis, "globalThis") DEF(bigint, "bigint") DEF(not_equal, "not-equal") DEF(timed_out, "timed-out") DEF(ok, "ok") DEF(toJSON, "toJSON") DEF(maxByteLength, "maxByteLength") /* class names */ DEF(Object, "Object") DEF(Array, "Array") DEF(Error, "Error") DEF(Number, "Number") DEF(String, "String") DEF(Boolean, "Boolean") DEF(Symbol, "Symbol") DEF(Arguments, "Arguments") DEF(Math, "Math") DEF(JSON, "JSON") DEF(Date, "Date") DEF(Function, "Function") DEF(GeneratorFunction, "GeneratorFunction") DEF(ForInIterator, "ForInIterator") DEF(RegExp, "RegExp") DEF(ArrayBuffer, "ArrayBuffer") DEF(SharedArrayBuffer, "SharedArrayBuffer") /* must keep same order as class IDs for typed arrays */ DEF(Uint8ClampedArray, "Uint8ClampedArray") DEF(Int8Array, "Int8Array") DEF(Uint8Array, "Uint8Array") DEF(Int16Array, "Int16Array") DEF(Uint16Array, "Uint16Array") DEF(Int32Array, "Int32Array") DEF(Uint32Array, "Uint32Array") DEF(BigInt64Array, "BigInt64Array") DEF(BigUint64Array, "BigUint64Array") DEF(Float16Array, "Float16Array") DEF(Float32Array, "Float32Array") DEF(Float64Array, "Float64Array") DEF(DataView, "DataView") DEF(BigInt, "BigInt") DEF(WeakRef, "WeakRef") DEF(FinalizationRegistry, "FinalizationRegistry") DEF(Map, "Map") DEF(Set, "Set") /* Map + 1 */ DEF(WeakMap, "WeakMap") /* Map + 2 */ DEF(WeakSet, "WeakSet") /* Map + 3 */ DEF(Iterator, "Iterator") DEF(IteratorHelper, "Iterator Helper") DEF(IteratorWrap, "Iterator Wrap") DEF(Map_Iterator, "Map Iterator") DEF(Set_Iterator, "Set Iterator") DEF(Array_Iterator, "Array Iterator") DEF(String_Iterator, "String Iterator") DEF(RegExp_String_Iterator, "RegExp String Iterator") DEF(Generator, "Generator") DEF(Proxy, "Proxy") DEF(Promise, "Promise") DEF(PromiseResolveFunction, "PromiseResolveFunction") DEF(PromiseRejectFunction, "PromiseRejectFunction") DEF(AsyncFunction, "AsyncFunction") DEF(AsyncFunctionResolve, "AsyncFunctionResolve") DEF(AsyncFunctionReject, "AsyncFunctionReject") DEF(AsyncGeneratorFunction, "AsyncGeneratorFunction") DEF(AsyncGenerator, "AsyncGenerator") DEF(EvalError, "EvalError") DEF(RangeError, "RangeError") DEF(ReferenceError, "ReferenceError") DEF(SyntaxError, "SyntaxError") DEF(TypeError, "TypeError") DEF(URIError, "URIError") DEF(InternalError, "InternalError") DEF(CallSite, "CallSite") /* private symbols */ DEF(Private_brand, "") /* symbols */ DEF(Symbol_toPrimitive, "Symbol.toPrimitive") DEF(Symbol_iterator, "Symbol.iterator") DEF(Symbol_match, "Symbol.match") DEF(Symbol_matchAll, "Symbol.matchAll") DEF(Symbol_replace, "Symbol.replace") DEF(Symbol_search, "Symbol.search") DEF(Symbol_split, "Symbol.split") DEF(Symbol_toStringTag, "Symbol.toStringTag") DEF(Symbol_isConcatSpreadable, "Symbol.isConcatSpreadable") DEF(Symbol_hasInstance, "Symbol.hasInstance") DEF(Symbol_species, "Symbol.species") DEF(Symbol_unscopables, "Symbol.unscopables") DEF(Symbol_asyncIterator, "Symbol.asyncIterator") #endif /* DEF */ #undef DEF JS_ATOM_END, }; #define JS_ATOM_LAST_KEYWORD JS_ATOM_super #define JS_ATOM_LAST_STRICT_KEYWORD JS_ATOM_yield static const char js_atom_init[] = #define DEF(name, str) str "\0" /* * QuickJS atom definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef DEF /* Note: first atoms are considered as keywords in the parser */ DEF(null, "null") /* must be first */ DEF(false, "false") DEF(true, "true") DEF(if, "if") DEF(else, "else") DEF(return, "return") DEF(var, "var") DEF(this, "this") DEF(delete, "delete") DEF(void, "void") DEF(typeof, "typeof") DEF(new, "new") DEF(in, "in") DEF(instanceof, "instanceof") DEF(do, "do") DEF(while, "while") DEF(for, "for") DEF(break, "break") DEF(continue, "continue") DEF(switch, "switch") DEF(case, "case") DEF(default, "default") DEF(throw, "throw") DEF(try, "try") DEF(catch, "catch") DEF(finally, "finally") DEF(function, "function") DEF(debugger, "debugger") DEF(with, "with") /* FutureReservedWord */ DEF(class, "class") DEF(const, "const") DEF(enum, "enum") DEF(export, "export") DEF(extends, "extends") DEF(import, "import") DEF(super, "super") /* FutureReservedWords when parsing strict mode code */ DEF(implements, "implements") DEF(interface, "interface") DEF(let, "let") DEF(package, "package") DEF(private, "private") DEF(protected, "protected") DEF(public, "public") DEF(static, "static") DEF(yield, "yield") DEF(await, "await") /* empty string */ DEF(empty_string, "") /* identifiers */ DEF(keys, "keys") DEF(size, "size") DEF(length, "length") DEF(message, "message") DEF(cause, "cause") DEF(errors, "errors") DEF(stack, "stack") DEF(name, "name") DEF(toString, "toString") DEF(toLocaleString, "toLocaleString") DEF(valueOf, "valueOf") DEF(eval, "eval") DEF(prototype, "prototype") DEF(constructor, "constructor") DEF(configurable, "configurable") DEF(writable, "writable") DEF(enumerable, "enumerable") DEF(value, "value") DEF(get, "get") DEF(set, "set") DEF(of, "of") DEF(__proto__, "__proto__") DEF(undefined, "undefined") DEF(number, "number") DEF(boolean, "boolean") DEF(string, "string") DEF(object, "object") DEF(symbol, "symbol") DEF(integer, "integer") DEF(unknown, "unknown") DEF(arguments, "arguments") DEF(callee, "callee") DEF(caller, "caller") DEF(_eval_, "") DEF(_ret_, "") DEF(_var_, "") DEF(_arg_var_, "") DEF(_with_, "") DEF(lastIndex, "lastIndex") DEF(target, "target") DEF(index, "index") DEF(input, "input") DEF(defineProperties, "defineProperties") DEF(apply, "apply") DEF(join, "join") DEF(concat, "concat") DEF(split, "split") DEF(construct, "construct") DEF(getPrototypeOf, "getPrototypeOf") DEF(setPrototypeOf, "setPrototypeOf") DEF(isExtensible, "isExtensible") DEF(preventExtensions, "preventExtensions") DEF(has, "has") DEF(deleteProperty, "deleteProperty") DEF(defineProperty, "defineProperty") DEF(getOwnPropertyDescriptor, "getOwnPropertyDescriptor") DEF(ownKeys, "ownKeys") DEF(add, "add") DEF(done, "done") DEF(next, "next") DEF(values, "values") DEF(source, "source") DEF(flags, "flags") DEF(global, "global") DEF(unicode, "unicode") DEF(raw, "raw") DEF(new_target, "new.target") DEF(this_active_func, "this.active_func") DEF(home_object, "") DEF(computed_field, "") DEF(static_computed_field, "") /* must come after computed_fields */ DEF(class_fields_init, "") DEF(brand, "") DEF(hash_constructor, "#constructor") DEF(as, "as") DEF(from, "from") DEF(meta, "meta") DEF(_default_, "*default*") DEF(_star_, "*") DEF(Module, "Module") DEF(then, "then") DEF(resolve, "resolve") DEF(reject, "reject") DEF(promise, "promise") DEF(proxy, "proxy") DEF(revoke, "revoke") DEF(async, "async") DEF(exec, "exec") DEF(groups, "groups") DEF(indices, "indices") DEF(status, "status") DEF(reason, "reason") DEF(globalThis, "globalThis") DEF(bigint, "bigint") DEF(not_equal, "not-equal") DEF(timed_out, "timed-out") DEF(ok, "ok") DEF(toJSON, "toJSON") DEF(maxByteLength, "maxByteLength") /* class names */ DEF(Object, "Object") DEF(Array, "Array") DEF(Error, "Error") DEF(Number, "Number") DEF(String, "String") DEF(Boolean, "Boolean") DEF(Symbol, "Symbol") DEF(Arguments, "Arguments") DEF(Math, "Math") DEF(JSON, "JSON") DEF(Date, "Date") DEF(Function, "Function") DEF(GeneratorFunction, "GeneratorFunction") DEF(ForInIterator, "ForInIterator") DEF(RegExp, "RegExp") DEF(ArrayBuffer, "ArrayBuffer") DEF(SharedArrayBuffer, "SharedArrayBuffer") /* must keep same order as class IDs for typed arrays */ DEF(Uint8ClampedArray, "Uint8ClampedArray") DEF(Int8Array, "Int8Array") DEF(Uint8Array, "Uint8Array") DEF(Int16Array, "Int16Array") DEF(Uint16Array, "Uint16Array") DEF(Int32Array, "Int32Array") DEF(Uint32Array, "Uint32Array") DEF(BigInt64Array, "BigInt64Array") DEF(BigUint64Array, "BigUint64Array") DEF(Float16Array, "Float16Array") DEF(Float32Array, "Float32Array") DEF(Float64Array, "Float64Array") DEF(DataView, "DataView") DEF(BigInt, "BigInt") DEF(WeakRef, "WeakRef") DEF(FinalizationRegistry, "FinalizationRegistry") DEF(Map, "Map") DEF(Set, "Set") /* Map + 1 */ DEF(WeakMap, "WeakMap") /* Map + 2 */ DEF(WeakSet, "WeakSet") /* Map + 3 */ DEF(Iterator, "Iterator") DEF(IteratorHelper, "Iterator Helper") DEF(IteratorWrap, "Iterator Wrap") DEF(Map_Iterator, "Map Iterator") DEF(Set_Iterator, "Set Iterator") DEF(Array_Iterator, "Array Iterator") DEF(String_Iterator, "String Iterator") DEF(RegExp_String_Iterator, "RegExp String Iterator") DEF(Generator, "Generator") DEF(Proxy, "Proxy") DEF(Promise, "Promise") DEF(PromiseResolveFunction, "PromiseResolveFunction") DEF(PromiseRejectFunction, "PromiseRejectFunction") DEF(AsyncFunction, "AsyncFunction") DEF(AsyncFunctionResolve, "AsyncFunctionResolve") DEF(AsyncFunctionReject, "AsyncFunctionReject") DEF(AsyncGeneratorFunction, "AsyncGeneratorFunction") DEF(AsyncGenerator, "AsyncGenerator") DEF(EvalError, "EvalError") DEF(RangeError, "RangeError") DEF(ReferenceError, "ReferenceError") DEF(SyntaxError, "SyntaxError") DEF(TypeError, "TypeError") DEF(URIError, "URIError") DEF(InternalError, "InternalError") DEF(CallSite, "CallSite") /* private symbols */ DEF(Private_brand, "") /* symbols */ DEF(Symbol_toPrimitive, "Symbol.toPrimitive") DEF(Symbol_iterator, "Symbol.iterator") DEF(Symbol_match, "Symbol.match") DEF(Symbol_matchAll, "Symbol.matchAll") DEF(Symbol_replace, "Symbol.replace") DEF(Symbol_search, "Symbol.search") DEF(Symbol_split, "Symbol.split") DEF(Symbol_toStringTag, "Symbol.toStringTag") DEF(Symbol_isConcatSpreadable, "Symbol.isConcatSpreadable") DEF(Symbol_hasInstance, "Symbol.hasInstance") DEF(Symbol_species, "Symbol.species") DEF(Symbol_unscopables, "Symbol.unscopables") DEF(Symbol_asyncIterator, "Symbol.asyncIterator") #endif /* DEF */ #undef DEF ; typedef enum OPCodeFormat { #define FMT(f) OP_FMT_ ## f, #define DEF(id, size, n_pop, n_push, f) /* * QuickJS opcode definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef FMT FMT(none) FMT(none_int) FMT(none_loc) FMT(none_arg) FMT(none_var_ref) FMT(u8) FMT(i8) FMT(loc8) FMT(const8) FMT(label8) FMT(u16) FMT(i16) FMT(label16) FMT(npop) FMT(npopx) FMT(npop_u16) FMT(loc) FMT(arg) FMT(var_ref) FMT(u32) FMT(u32x2) FMT(i32) FMT(const) FMT(label) FMT(atom) FMT(atom_u8) FMT(atom_u16) FMT(atom_label_u8) FMT(atom_label_u16) FMT(label_u16) #undef FMT #endif /* FMT */ #ifdef DEF #ifndef def #define def(id, size, n_pop, n_push, f) DEF(id, size, n_pop, n_push, f) #endif DEF(invalid, 1, 0, 0, none) /* never emitted */ /* push values */ DEF( push_i32, 5, 0, 1, i32) DEF( push_const, 5, 0, 1, const) DEF( fclosure, 5, 0, 1, const) /* must follow push_const */ DEF(push_atom_value, 5, 0, 1, atom) DEF( private_symbol, 5, 0, 1, atom) DEF( undefined, 1, 0, 1, none) DEF( null, 1, 0, 1, none) DEF( push_this, 1, 0, 1, none) /* only used at the start of a function */ DEF( push_false, 1, 0, 1, none) DEF( push_true, 1, 0, 1, none) DEF( object, 1, 0, 1, none) DEF( special_object, 2, 0, 1, u8) /* only used at the start of a function */ DEF( rest, 3, 0, 1, u16) /* only used at the start of a function */ DEF( drop, 1, 1, 0, none) /* a -> */ DEF( nip, 1, 2, 1, none) /* a b -> b */ DEF( nip1, 1, 3, 2, none) /* a b c -> b c */ DEF( dup, 1, 1, 2, none) /* a -> a a */ DEF( dup1, 1, 2, 3, none) /* a b -> a a b */ DEF( dup2, 1, 2, 4, none) /* a b -> a b a b */ DEF( dup3, 1, 3, 6, none) /* a b c -> a b c a b c */ DEF( insert2, 1, 2, 3, none) /* obj a -> a obj a (dup_x1) */ DEF( insert3, 1, 3, 4, none) /* obj prop a -> a obj prop a (dup_x2) */ DEF( insert4, 1, 4, 5, none) /* this obj prop a -> a this obj prop a */ DEF( perm3, 1, 3, 3, none) /* obj a b -> a obj b */ DEF( perm4, 1, 4, 4, none) /* obj prop a b -> a obj prop b */ DEF( perm5, 1, 5, 5, none) /* this obj prop a b -> a this obj prop b */ DEF( swap, 1, 2, 2, none) /* a b -> b a */ DEF( swap2, 1, 4, 4, none) /* a b c d -> c d a b */ DEF( rot3l, 1, 3, 3, none) /* x a b -> a b x */ DEF( rot3r, 1, 3, 3, none) /* a b x -> x a b */ DEF( rot4l, 1, 4, 4, none) /* x a b c -> a b c x */ DEF( rot5l, 1, 5, 5, none) /* x a b c d -> a b c d x */ DEF(call_constructor, 3, 2, 1, npop) /* func new.target args -> ret. arguments are not counted in n_pop */ DEF( call, 3, 1, 1, npop) /* arguments are not counted in n_pop */ DEF( tail_call, 3, 1, 0, npop) /* arguments are not counted in n_pop */ DEF( call_method, 3, 2, 1, npop) /* arguments are not counted in n_pop */ DEF(tail_call_method, 3, 2, 0, npop) /* arguments are not counted in n_pop */ DEF( array_from, 3, 0, 1, npop) /* arguments are not counted in n_pop */ DEF( apply, 3, 3, 1, u16) DEF( return, 1, 1, 0, none) DEF( return_undef, 1, 0, 0, none) DEF(check_ctor_return, 1, 1, 2, none) DEF( check_ctor, 1, 0, 0, none) DEF( init_ctor, 1, 0, 1, none) DEF( check_brand, 1, 2, 2, none) /* this_obj func -> this_obj func */ DEF( add_brand, 1, 2, 0, none) /* this_obj home_obj -> */ DEF( return_async, 1, 1, 0, none) DEF( throw, 1, 1, 0, none) DEF( throw_error, 6, 0, 0, atom_u8) DEF( eval, 5, 1, 1, npop_u16) /* func args... -> ret_val */ DEF( apply_eval, 3, 2, 1, u16) /* func array -> ret_eval */ DEF( regexp, 1, 2, 1, none) /* create a RegExp object from the pattern and a bytecode string */ DEF( get_super, 1, 1, 1, none) DEF( import, 1, 1, 1, none) /* dynamic module import */ DEF( check_var, 5, 0, 1, atom) /* check if a variable exists */ DEF( get_var_undef, 5, 0, 1, atom) /* push undefined if the variable does not exist */ DEF( get_var, 5, 0, 1, atom) /* throw an exception if the variable does not exist */ DEF( put_var, 5, 1, 0, atom) /* must come after get_var */ DEF( put_var_init, 5, 1, 0, atom) /* must come after put_var. Used to initialize a global lexical variable */ DEF( put_var_strict, 5, 2, 0, atom) /* for strict mode variable write */ DEF( get_ref_value, 1, 2, 3, none) DEF( put_ref_value, 1, 3, 0, none) DEF( define_var, 6, 0, 0, atom_u8) DEF(check_define_var, 6, 0, 0, atom_u8) DEF( define_func, 6, 1, 0, atom_u8) // order matters, see IC counterparts DEF( get_field, 5, 1, 1, atom) DEF( get_field2, 5, 1, 2, atom) DEF( put_field, 5, 2, 0, atom) DEF( get_private_field, 1, 2, 1, none) /* obj prop -> value */ DEF( put_private_field, 1, 3, 0, none) /* obj value prop -> */ DEF(define_private_field, 1, 3, 1, none) /* obj prop value -> obj */ DEF( get_array_el, 1, 2, 1, none) DEF( get_array_el2, 1, 2, 2, none) /* obj prop -> obj value */ DEF( put_array_el, 1, 3, 0, none) DEF(get_super_value, 1, 3, 1, none) /* this obj prop -> value */ DEF(put_super_value, 1, 4, 0, none) /* this obj prop value -> */ DEF( define_field, 5, 2, 1, atom) DEF( set_name, 5, 1, 1, atom) DEF(set_name_computed, 1, 2, 2, none) DEF( set_proto, 1, 2, 1, none) DEF(set_home_object, 1, 2, 2, none) DEF(define_array_el, 1, 3, 2, none) DEF( append, 1, 3, 2, none) /* append enumerated object, update length */ DEF(copy_data_properties, 2, 3, 3, u8) DEF( define_method, 6, 2, 1, atom_u8) DEF(define_method_computed, 2, 3, 1, u8) /* must come after define_method */ DEF( define_class, 6, 2, 2, atom_u8) /* parent ctor -> ctor proto */ DEF( define_class_computed, 6, 3, 3, atom_u8) /* field_name parent ctor -> field_name ctor proto (class with computed name) */ DEF( get_loc, 3, 0, 1, loc) DEF( put_loc, 3, 1, 0, loc) /* must come after get_loc */ DEF( set_loc, 3, 1, 1, loc) /* must come after put_loc */ DEF( get_arg, 3, 0, 1, arg) DEF( put_arg, 3, 1, 0, arg) /* must come after get_arg */ DEF( set_arg, 3, 1, 1, arg) /* must come after put_arg */ DEF( get_var_ref, 3, 0, 1, var_ref) DEF( put_var_ref, 3, 1, 0, var_ref) /* must come after get_var_ref */ DEF( set_var_ref, 3, 1, 1, var_ref) /* must come after put_var_ref */ DEF(set_loc_uninitialized, 3, 0, 0, loc) DEF( get_loc_check, 3, 0, 1, loc) DEF( put_loc_check, 3, 1, 0, loc) /* must come after get_loc_check */ DEF( put_loc_check_init, 3, 1, 0, loc) DEF(get_var_ref_check, 3, 0, 1, var_ref) DEF(put_var_ref_check, 3, 1, 0, var_ref) /* must come after get_var_ref_check */ DEF(put_var_ref_check_init, 3, 1, 0, var_ref) DEF( close_loc, 3, 0, 0, loc) DEF( if_false, 5, 1, 0, label) DEF( if_true, 5, 1, 0, label) /* must come after if_false */ DEF( goto, 5, 0, 0, label) /* must come after if_true */ DEF( catch, 5, 0, 1, label) DEF( gosub, 5, 0, 0, label) /* used to execute the finally block */ DEF( ret, 1, 1, 0, none) /* used to return from the finally block */ DEF( nip_catch, 1, 2, 1, none) /* catch ... a -> a */ DEF( to_object, 1, 1, 1, none) //DEF( to_string, 1, 1, 1, none) DEF( to_propkey, 1, 1, 1, none) DEF( to_propkey2, 1, 2, 2, none) DEF( with_get_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_put_var, 10, 2, 1, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_delete_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_make_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_get_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_get_ref_undef, 10, 1, 0, atom_label_u8) DEF( make_loc_ref, 7, 0, 2, atom_u16) DEF( make_arg_ref, 7, 0, 2, atom_u16) DEF(make_var_ref_ref, 7, 0, 2, atom_u16) DEF( make_var_ref, 5, 0, 2, atom) DEF( for_in_start, 1, 1, 1, none) DEF( for_of_start, 1, 1, 3, none) DEF(for_await_of_start, 1, 1, 3, none) DEF( for_in_next, 1, 1, 3, none) DEF( for_of_next, 2, 3, 5, u8) DEF(iterator_check_object, 1, 1, 1, none) DEF(iterator_get_value_done, 1, 1, 2, none) DEF( iterator_close, 1, 3, 0, none) DEF( iterator_next, 1, 4, 4, none) DEF( iterator_call, 2, 4, 5, u8) DEF( initial_yield, 1, 0, 0, none) DEF( yield, 1, 1, 2, none) DEF( yield_star, 1, 1, 2, none) DEF(async_yield_star, 1, 1, 2, none) DEF( await, 1, 1, 1, none) /* arithmetic/logic operations */ DEF( neg, 1, 1, 1, none) DEF( plus, 1, 1, 1, none) DEF( dec, 1, 1, 1, none) DEF( inc, 1, 1, 1, none) DEF( post_dec, 1, 1, 2, none) DEF( post_inc, 1, 1, 2, none) DEF( dec_loc, 2, 0, 0, loc8) DEF( inc_loc, 2, 0, 0, loc8) DEF( add_loc, 2, 1, 0, loc8) DEF( not, 1, 1, 1, none) DEF( lnot, 1, 1, 1, none) DEF( typeof, 1, 1, 1, none) DEF( delete, 1, 2, 1, none) DEF( delete_var, 5, 0, 1, atom) /* warning: order matters (see js_parse_assign_expr) */ DEF( mul, 1, 2, 1, none) DEF( div, 1, 2, 1, none) DEF( mod, 1, 2, 1, none) DEF( add, 1, 2, 1, none) DEF( sub, 1, 2, 1, none) DEF( shl, 1, 2, 1, none) DEF( sar, 1, 2, 1, none) DEF( shr, 1, 2, 1, none) DEF( and, 1, 2, 1, none) DEF( xor, 1, 2, 1, none) DEF( or, 1, 2, 1, none) DEF( pow, 1, 2, 1, none) DEF( lt, 1, 2, 1, none) DEF( lte, 1, 2, 1, none) DEF( gt, 1, 2, 1, none) DEF( gte, 1, 2, 1, none) DEF( instanceof, 1, 2, 1, none) DEF( in, 1, 2, 1, none) DEF( eq, 1, 2, 1, none) DEF( neq, 1, 2, 1, none) DEF( strict_eq, 1, 2, 1, none) DEF( strict_neq, 1, 2, 1, none) DEF(is_undefined_or_null, 1, 1, 1, none) DEF( private_in, 1, 2, 1, none) /* must be the last non short and non temporary opcode */ DEF( nop, 1, 0, 0, none) /* temporary opcodes: never emitted in the final bytecode */ def( enter_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( leave_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( label, 5, 0, 0, label) /* emitted in phase 1, removed in phase 3 */ def(scope_get_var_undef, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_put_var, 7, 1, 0, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_delete_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_make_ref, 11, 0, 2, atom_label_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_ref, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_put_var_init, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_get_private_field, 7, 1, 1, atom_u16) /* obj -> value, emitted in phase 1, removed in phase 2 */ def(scope_get_private_field2, 7, 1, 2, atom_u16) /* obj -> obj value, emitted in phase 1, removed in phase 2 */ def(scope_put_private_field, 7, 2, 0, atom_u16) /* obj value ->, emitted in phase 1, removed in phase 2 */ def(scope_in_private_field, 7, 1, 1, atom_u16) /* obj -> res emitted in phase 1, removed in phase 2 */ def(get_field_opt_chain, 5, 1, 1, atom) /* emitted in phase 1, removed in phase 2 */ def(get_array_el_opt_chain, 1, 2, 1, none) /* emitted in phase 1, removed in phase 2 */ def( set_class_name, 5, 1, 1, u32) /* emitted in phase 1, removed in phase 2 */ def( source_loc, 9, 0, 0, u32x2) /* emitted in phase 1, removed in phase 3 */ DEF( push_minus1, 1, 0, 1, none_int) DEF( push_0, 1, 0, 1, none_int) DEF( push_1, 1, 0, 1, none_int) DEF( push_2, 1, 0, 1, none_int) DEF( push_3, 1, 0, 1, none_int) DEF( push_4, 1, 0, 1, none_int) DEF( push_5, 1, 0, 1, none_int) DEF( push_6, 1, 0, 1, none_int) DEF( push_7, 1, 0, 1, none_int) DEF( push_i8, 2, 0, 1, i8) DEF( push_i16, 3, 0, 1, i16) DEF( push_const8, 2, 0, 1, const8) DEF( fclosure8, 2, 0, 1, const8) /* must follow push_const8 */ DEF(push_empty_string, 1, 0, 1, none) DEF( get_loc8, 2, 0, 1, loc8) DEF( put_loc8, 2, 1, 0, loc8) DEF( set_loc8, 2, 1, 1, loc8) DEF( get_loc0_loc1, 1, 0, 2, none_loc) DEF( get_loc0, 1, 0, 1, none_loc) DEF( get_loc1, 1, 0, 1, none_loc) DEF( get_loc2, 1, 0, 1, none_loc) DEF( get_loc3, 1, 0, 1, none_loc) DEF( put_loc0, 1, 1, 0, none_loc) DEF( put_loc1, 1, 1, 0, none_loc) DEF( put_loc2, 1, 1, 0, none_loc) DEF( put_loc3, 1, 1, 0, none_loc) DEF( set_loc0, 1, 1, 1, none_loc) DEF( set_loc1, 1, 1, 1, none_loc) DEF( set_loc2, 1, 1, 1, none_loc) DEF( set_loc3, 1, 1, 1, none_loc) DEF( get_arg0, 1, 0, 1, none_arg) DEF( get_arg1, 1, 0, 1, none_arg) DEF( get_arg2, 1, 0, 1, none_arg) DEF( get_arg3, 1, 0, 1, none_arg) DEF( put_arg0, 1, 1, 0, none_arg) DEF( put_arg1, 1, 1, 0, none_arg) DEF( put_arg2, 1, 1, 0, none_arg) DEF( put_arg3, 1, 1, 0, none_arg) DEF( set_arg0, 1, 1, 1, none_arg) DEF( set_arg1, 1, 1, 1, none_arg) DEF( set_arg2, 1, 1, 1, none_arg) DEF( set_arg3, 1, 1, 1, none_arg) DEF( get_var_ref0, 1, 0, 1, none_var_ref) DEF( get_var_ref1, 1, 0, 1, none_var_ref) DEF( get_var_ref2, 1, 0, 1, none_var_ref) DEF( get_var_ref3, 1, 0, 1, none_var_ref) DEF( put_var_ref0, 1, 1, 0, none_var_ref) DEF( put_var_ref1, 1, 1, 0, none_var_ref) DEF( put_var_ref2, 1, 1, 0, none_var_ref) DEF( put_var_ref3, 1, 1, 0, none_var_ref) DEF( set_var_ref0, 1, 1, 1, none_var_ref) DEF( set_var_ref1, 1, 1, 1, none_var_ref) DEF( set_var_ref2, 1, 1, 1, none_var_ref) DEF( set_var_ref3, 1, 1, 1, none_var_ref) DEF( get_length, 1, 1, 1, none) DEF( if_false8, 2, 1, 0, label8) DEF( if_true8, 2, 1, 0, label8) /* must come after if_false8 */ DEF( goto8, 2, 0, 0, label8) /* must come after if_true8 */ DEF( goto16, 3, 0, 0, label16) DEF( call0, 1, 1, 1, npopx) DEF( call1, 1, 1, 1, npopx) DEF( call2, 1, 1, 1, npopx) DEF( call3, 1, 1, 1, npopx) DEF( is_undefined, 1, 1, 1, none) DEF( is_null, 1, 1, 1, none) DEF(typeof_is_undefined, 1, 1, 1, none) DEF( typeof_is_function, 1, 1, 1, none) #undef DEF #undef def #endif /* DEF */ #undef DEF #undef FMT } OPCodeFormat; typedef enum OPCodeEnum { #define FMT(f) #define DEF(id, size, n_pop, n_push, f) OP_ ## id, #define def(id, size, n_pop, n_push, f) /* * QuickJS opcode definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef FMT FMT(none) FMT(none_int) FMT(none_loc) FMT(none_arg) FMT(none_var_ref) FMT(u8) FMT(i8) FMT(loc8) FMT(const8) FMT(label8) FMT(u16) FMT(i16) FMT(label16) FMT(npop) FMT(npopx) FMT(npop_u16) FMT(loc) FMT(arg) FMT(var_ref) FMT(u32) FMT(u32x2) FMT(i32) FMT(const) FMT(label) FMT(atom) FMT(atom_u8) FMT(atom_u16) FMT(atom_label_u8) FMT(atom_label_u16) FMT(label_u16) #undef FMT #endif /* FMT */ #ifdef DEF #ifndef def #define def(id, size, n_pop, n_push, f) DEF(id, size, n_pop, n_push, f) #endif DEF(invalid, 1, 0, 0, none) /* never emitted */ /* push values */ DEF( push_i32, 5, 0, 1, i32) DEF( push_const, 5, 0, 1, const) DEF( fclosure, 5, 0, 1, const) /* must follow push_const */ DEF(push_atom_value, 5, 0, 1, atom) DEF( private_symbol, 5, 0, 1, atom) DEF( undefined, 1, 0, 1, none) DEF( null, 1, 0, 1, none) DEF( push_this, 1, 0, 1, none) /* only used at the start of a function */ DEF( push_false, 1, 0, 1, none) DEF( push_true, 1, 0, 1, none) DEF( object, 1, 0, 1, none) DEF( special_object, 2, 0, 1, u8) /* only used at the start of a function */ DEF( rest, 3, 0, 1, u16) /* only used at the start of a function */ DEF( drop, 1, 1, 0, none) /* a -> */ DEF( nip, 1, 2, 1, none) /* a b -> b */ DEF( nip1, 1, 3, 2, none) /* a b c -> b c */ DEF( dup, 1, 1, 2, none) /* a -> a a */ DEF( dup1, 1, 2, 3, none) /* a b -> a a b */ DEF( dup2, 1, 2, 4, none) /* a b -> a b a b */ DEF( dup3, 1, 3, 6, none) /* a b c -> a b c a b c */ DEF( insert2, 1, 2, 3, none) /* obj a -> a obj a (dup_x1) */ DEF( insert3, 1, 3, 4, none) /* obj prop a -> a obj prop a (dup_x2) */ DEF( insert4, 1, 4, 5, none) /* this obj prop a -> a this obj prop a */ DEF( perm3, 1, 3, 3, none) /* obj a b -> a obj b */ DEF( perm4, 1, 4, 4, none) /* obj prop a b -> a obj prop b */ DEF( perm5, 1, 5, 5, none) /* this obj prop a b -> a this obj prop b */ DEF( swap, 1, 2, 2, none) /* a b -> b a */ DEF( swap2, 1, 4, 4, none) /* a b c d -> c d a b */ DEF( rot3l, 1, 3, 3, none) /* x a b -> a b x */ DEF( rot3r, 1, 3, 3, none) /* a b x -> x a b */ DEF( rot4l, 1, 4, 4, none) /* x a b c -> a b c x */ DEF( rot5l, 1, 5, 5, none) /* x a b c d -> a b c d x */ DEF(call_constructor, 3, 2, 1, npop) /* func new.target args -> ret. arguments are not counted in n_pop */ DEF( call, 3, 1, 1, npop) /* arguments are not counted in n_pop */ DEF( tail_call, 3, 1, 0, npop) /* arguments are not counted in n_pop */ DEF( call_method, 3, 2, 1, npop) /* arguments are not counted in n_pop */ DEF(tail_call_method, 3, 2, 0, npop) /* arguments are not counted in n_pop */ DEF( array_from, 3, 0, 1, npop) /* arguments are not counted in n_pop */ DEF( apply, 3, 3, 1, u16) DEF( return, 1, 1, 0, none) DEF( return_undef, 1, 0, 0, none) DEF(check_ctor_return, 1, 1, 2, none) DEF( check_ctor, 1, 0, 0, none) DEF( init_ctor, 1, 0, 1, none) DEF( check_brand, 1, 2, 2, none) /* this_obj func -> this_obj func */ DEF( add_brand, 1, 2, 0, none) /* this_obj home_obj -> */ DEF( return_async, 1, 1, 0, none) DEF( throw, 1, 1, 0, none) DEF( throw_error, 6, 0, 0, atom_u8) DEF( eval, 5, 1, 1, npop_u16) /* func args... -> ret_val */ DEF( apply_eval, 3, 2, 1, u16) /* func array -> ret_eval */ DEF( regexp, 1, 2, 1, none) /* create a RegExp object from the pattern and a bytecode string */ DEF( get_super, 1, 1, 1, none) DEF( import, 1, 1, 1, none) /* dynamic module import */ DEF( check_var, 5, 0, 1, atom) /* check if a variable exists */ DEF( get_var_undef, 5, 0, 1, atom) /* push undefined if the variable does not exist */ DEF( get_var, 5, 0, 1, atom) /* throw an exception if the variable does not exist */ DEF( put_var, 5, 1, 0, atom) /* must come after get_var */ DEF( put_var_init, 5, 1, 0, atom) /* must come after put_var. Used to initialize a global lexical variable */ DEF( put_var_strict, 5, 2, 0, atom) /* for strict mode variable write */ DEF( get_ref_value, 1, 2, 3, none) DEF( put_ref_value, 1, 3, 0, none) DEF( define_var, 6, 0, 0, atom_u8) DEF(check_define_var, 6, 0, 0, atom_u8) DEF( define_func, 6, 1, 0, atom_u8) // order matters, see IC counterparts DEF( get_field, 5, 1, 1, atom) DEF( get_field2, 5, 1, 2, atom) DEF( put_field, 5, 2, 0, atom) DEF( get_private_field, 1, 2, 1, none) /* obj prop -> value */ DEF( put_private_field, 1, 3, 0, none) /* obj value prop -> */ DEF(define_private_field, 1, 3, 1, none) /* obj prop value -> obj */ DEF( get_array_el, 1, 2, 1, none) DEF( get_array_el2, 1, 2, 2, none) /* obj prop -> obj value */ DEF( put_array_el, 1, 3, 0, none) DEF(get_super_value, 1, 3, 1, none) /* this obj prop -> value */ DEF(put_super_value, 1, 4, 0, none) /* this obj prop value -> */ DEF( define_field, 5, 2, 1, atom) DEF( set_name, 5, 1, 1, atom) DEF(set_name_computed, 1, 2, 2, none) DEF( set_proto, 1, 2, 1, none) DEF(set_home_object, 1, 2, 2, none) DEF(define_array_el, 1, 3, 2, none) DEF( append, 1, 3, 2, none) /* append enumerated object, update length */ DEF(copy_data_properties, 2, 3, 3, u8) DEF( define_method, 6, 2, 1, atom_u8) DEF(define_method_computed, 2, 3, 1, u8) /* must come after define_method */ DEF( define_class, 6, 2, 2, atom_u8) /* parent ctor -> ctor proto */ DEF( define_class_computed, 6, 3, 3, atom_u8) /* field_name parent ctor -> field_name ctor proto (class with computed name) */ DEF( get_loc, 3, 0, 1, loc) DEF( put_loc, 3, 1, 0, loc) /* must come after get_loc */ DEF( set_loc, 3, 1, 1, loc) /* must come after put_loc */ DEF( get_arg, 3, 0, 1, arg) DEF( put_arg, 3, 1, 0, arg) /* must come after get_arg */ DEF( set_arg, 3, 1, 1, arg) /* must come after put_arg */ DEF( get_var_ref, 3, 0, 1, var_ref) DEF( put_var_ref, 3, 1, 0, var_ref) /* must come after get_var_ref */ DEF( set_var_ref, 3, 1, 1, var_ref) /* must come after put_var_ref */ DEF(set_loc_uninitialized, 3, 0, 0, loc) DEF( get_loc_check, 3, 0, 1, loc) DEF( put_loc_check, 3, 1, 0, loc) /* must come after get_loc_check */ DEF( put_loc_check_init, 3, 1, 0, loc) DEF(get_var_ref_check, 3, 0, 1, var_ref) DEF(put_var_ref_check, 3, 1, 0, var_ref) /* must come after get_var_ref_check */ DEF(put_var_ref_check_init, 3, 1, 0, var_ref) DEF( close_loc, 3, 0, 0, loc) DEF( if_false, 5, 1, 0, label) DEF( if_true, 5, 1, 0, label) /* must come after if_false */ DEF( goto, 5, 0, 0, label) /* must come after if_true */ DEF( catch, 5, 0, 1, label) DEF( gosub, 5, 0, 0, label) /* used to execute the finally block */ DEF( ret, 1, 1, 0, none) /* used to return from the finally block */ DEF( nip_catch, 1, 2, 1, none) /* catch ... a -> a */ DEF( to_object, 1, 1, 1, none) //DEF( to_string, 1, 1, 1, none) DEF( to_propkey, 1, 1, 1, none) DEF( to_propkey2, 1, 2, 2, none) DEF( with_get_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_put_var, 10, 2, 1, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_delete_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_make_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_get_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_get_ref_undef, 10, 1, 0, atom_label_u8) DEF( make_loc_ref, 7, 0, 2, atom_u16) DEF( make_arg_ref, 7, 0, 2, atom_u16) DEF(make_var_ref_ref, 7, 0, 2, atom_u16) DEF( make_var_ref, 5, 0, 2, atom) DEF( for_in_start, 1, 1, 1, none) DEF( for_of_start, 1, 1, 3, none) DEF(for_await_of_start, 1, 1, 3, none) DEF( for_in_next, 1, 1, 3, none) DEF( for_of_next, 2, 3, 5, u8) DEF(iterator_check_object, 1, 1, 1, none) DEF(iterator_get_value_done, 1, 1, 2, none) DEF( iterator_close, 1, 3, 0, none) DEF( iterator_next, 1, 4, 4, none) DEF( iterator_call, 2, 4, 5, u8) DEF( initial_yield, 1, 0, 0, none) DEF( yield, 1, 1, 2, none) DEF( yield_star, 1, 1, 2, none) DEF(async_yield_star, 1, 1, 2, none) DEF( await, 1, 1, 1, none) /* arithmetic/logic operations */ DEF( neg, 1, 1, 1, none) DEF( plus, 1, 1, 1, none) DEF( dec, 1, 1, 1, none) DEF( inc, 1, 1, 1, none) DEF( post_dec, 1, 1, 2, none) DEF( post_inc, 1, 1, 2, none) DEF( dec_loc, 2, 0, 0, loc8) DEF( inc_loc, 2, 0, 0, loc8) DEF( add_loc, 2, 1, 0, loc8) DEF( not, 1, 1, 1, none) DEF( lnot, 1, 1, 1, none) DEF( typeof, 1, 1, 1, none) DEF( delete, 1, 2, 1, none) DEF( delete_var, 5, 0, 1, atom) /* warning: order matters (see js_parse_assign_expr) */ DEF( mul, 1, 2, 1, none) DEF( div, 1, 2, 1, none) DEF( mod, 1, 2, 1, none) DEF( add, 1, 2, 1, none) DEF( sub, 1, 2, 1, none) DEF( shl, 1, 2, 1, none) DEF( sar, 1, 2, 1, none) DEF( shr, 1, 2, 1, none) DEF( and, 1, 2, 1, none) DEF( xor, 1, 2, 1, none) DEF( or, 1, 2, 1, none) DEF( pow, 1, 2, 1, none) DEF( lt, 1, 2, 1, none) DEF( lte, 1, 2, 1, none) DEF( gt, 1, 2, 1, none) DEF( gte, 1, 2, 1, none) DEF( instanceof, 1, 2, 1, none) DEF( in, 1, 2, 1, none) DEF( eq, 1, 2, 1, none) DEF( neq, 1, 2, 1, none) DEF( strict_eq, 1, 2, 1, none) DEF( strict_neq, 1, 2, 1, none) DEF(is_undefined_or_null, 1, 1, 1, none) DEF( private_in, 1, 2, 1, none) /* must be the last non short and non temporary opcode */ DEF( nop, 1, 0, 0, none) /* temporary opcodes: never emitted in the final bytecode */ def( enter_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( leave_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( label, 5, 0, 0, label) /* emitted in phase 1, removed in phase 3 */ def(scope_get_var_undef, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_put_var, 7, 1, 0, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_delete_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_make_ref, 11, 0, 2, atom_label_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_ref, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_put_var_init, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_get_private_field, 7, 1, 1, atom_u16) /* obj -> value, emitted in phase 1, removed in phase 2 */ def(scope_get_private_field2, 7, 1, 2, atom_u16) /* obj -> obj value, emitted in phase 1, removed in phase 2 */ def(scope_put_private_field, 7, 2, 0, atom_u16) /* obj value ->, emitted in phase 1, removed in phase 2 */ def(scope_in_private_field, 7, 1, 1, atom_u16) /* obj -> res emitted in phase 1, removed in phase 2 */ def(get_field_opt_chain, 5, 1, 1, atom) /* emitted in phase 1, removed in phase 2 */ def(get_array_el_opt_chain, 1, 2, 1, none) /* emitted in phase 1, removed in phase 2 */ def( set_class_name, 5, 1, 1, u32) /* emitted in phase 1, removed in phase 2 */ def( source_loc, 9, 0, 0, u32x2) /* emitted in phase 1, removed in phase 3 */ DEF( push_minus1, 1, 0, 1, none_int) DEF( push_0, 1, 0, 1, none_int) DEF( push_1, 1, 0, 1, none_int) DEF( push_2, 1, 0, 1, none_int) DEF( push_3, 1, 0, 1, none_int) DEF( push_4, 1, 0, 1, none_int) DEF( push_5, 1, 0, 1, none_int) DEF( push_6, 1, 0, 1, none_int) DEF( push_7, 1, 0, 1, none_int) DEF( push_i8, 2, 0, 1, i8) DEF( push_i16, 3, 0, 1, i16) DEF( push_const8, 2, 0, 1, const8) DEF( fclosure8, 2, 0, 1, const8) /* must follow push_const8 */ DEF(push_empty_string, 1, 0, 1, none) DEF( get_loc8, 2, 0, 1, loc8) DEF( put_loc8, 2, 1, 0, loc8) DEF( set_loc8, 2, 1, 1, loc8) DEF( get_loc0_loc1, 1, 0, 2, none_loc) DEF( get_loc0, 1, 0, 1, none_loc) DEF( get_loc1, 1, 0, 1, none_loc) DEF( get_loc2, 1, 0, 1, none_loc) DEF( get_loc3, 1, 0, 1, none_loc) DEF( put_loc0, 1, 1, 0, none_loc) DEF( put_loc1, 1, 1, 0, none_loc) DEF( put_loc2, 1, 1, 0, none_loc) DEF( put_loc3, 1, 1, 0, none_loc) DEF( set_loc0, 1, 1, 1, none_loc) DEF( set_loc1, 1, 1, 1, none_loc) DEF( set_loc2, 1, 1, 1, none_loc) DEF( set_loc3, 1, 1, 1, none_loc) DEF( get_arg0, 1, 0, 1, none_arg) DEF( get_arg1, 1, 0, 1, none_arg) DEF( get_arg2, 1, 0, 1, none_arg) DEF( get_arg3, 1, 0, 1, none_arg) DEF( put_arg0, 1, 1, 0, none_arg) DEF( put_arg1, 1, 1, 0, none_arg) DEF( put_arg2, 1, 1, 0, none_arg) DEF( put_arg3, 1, 1, 0, none_arg) DEF( set_arg0, 1, 1, 1, none_arg) DEF( set_arg1, 1, 1, 1, none_arg) DEF( set_arg2, 1, 1, 1, none_arg) DEF( set_arg3, 1, 1, 1, none_arg) DEF( get_var_ref0, 1, 0, 1, none_var_ref) DEF( get_var_ref1, 1, 0, 1, none_var_ref) DEF( get_var_ref2, 1, 0, 1, none_var_ref) DEF( get_var_ref3, 1, 0, 1, none_var_ref) DEF( put_var_ref0, 1, 1, 0, none_var_ref) DEF( put_var_ref1, 1, 1, 0, none_var_ref) DEF( put_var_ref2, 1, 1, 0, none_var_ref) DEF( put_var_ref3, 1, 1, 0, none_var_ref) DEF( set_var_ref0, 1, 1, 1, none_var_ref) DEF( set_var_ref1, 1, 1, 1, none_var_ref) DEF( set_var_ref2, 1, 1, 1, none_var_ref) DEF( set_var_ref3, 1, 1, 1, none_var_ref) DEF( get_length, 1, 1, 1, none) DEF( if_false8, 2, 1, 0, label8) DEF( if_true8, 2, 1, 0, label8) /* must come after if_false8 */ DEF( goto8, 2, 0, 0, label8) /* must come after if_true8 */ DEF( goto16, 3, 0, 0, label16) DEF( call0, 1, 1, 1, npopx) DEF( call1, 1, 1, 1, npopx) DEF( call2, 1, 1, 1, npopx) DEF( call3, 1, 1, 1, npopx) DEF( is_undefined, 1, 1, 1, none) DEF( is_null, 1, 1, 1, none) DEF(typeof_is_undefined, 1, 1, 1, none) DEF( typeof_is_function, 1, 1, 1, none) #undef DEF #undef def #endif /* DEF */ #undef def #undef DEF #undef FMT OP_COUNT, /* excluding temporary opcodes */ /* temporary opcodes : overlap with the short opcodes */ OP_TEMP_START = OP_nop + 1, OP___dummy = OP_TEMP_START - 1, #define FMT(f) #define DEF(id, size, n_pop, n_push, f) #define def(id, size, n_pop, n_push, f) OP_ ## id, /* * QuickJS opcode definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef FMT FMT(none) FMT(none_int) FMT(none_loc) FMT(none_arg) FMT(none_var_ref) FMT(u8) FMT(i8) FMT(loc8) FMT(const8) FMT(label8) FMT(u16) FMT(i16) FMT(label16) FMT(npop) FMT(npopx) FMT(npop_u16) FMT(loc) FMT(arg) FMT(var_ref) FMT(u32) FMT(u32x2) FMT(i32) FMT(const) FMT(label) FMT(atom) FMT(atom_u8) FMT(atom_u16) FMT(atom_label_u8) FMT(atom_label_u16) FMT(label_u16) #undef FMT #endif /* FMT */ #ifdef DEF #ifndef def #define def(id, size, n_pop, n_push, f) DEF(id, size, n_pop, n_push, f) #endif DEF(invalid, 1, 0, 0, none) /* never emitted */ /* push values */ DEF( push_i32, 5, 0, 1, i32) DEF( push_const, 5, 0, 1, const) DEF( fclosure, 5, 0, 1, const) /* must follow push_const */ DEF(push_atom_value, 5, 0, 1, atom) DEF( private_symbol, 5, 0, 1, atom) DEF( undefined, 1, 0, 1, none) DEF( null, 1, 0, 1, none) DEF( push_this, 1, 0, 1, none) /* only used at the start of a function */ DEF( push_false, 1, 0, 1, none) DEF( push_true, 1, 0, 1, none) DEF( object, 1, 0, 1, none) DEF( special_object, 2, 0, 1, u8) /* only used at the start of a function */ DEF( rest, 3, 0, 1, u16) /* only used at the start of a function */ DEF( drop, 1, 1, 0, none) /* a -> */ DEF( nip, 1, 2, 1, none) /* a b -> b */ DEF( nip1, 1, 3, 2, none) /* a b c -> b c */ DEF( dup, 1, 1, 2, none) /* a -> a a */ DEF( dup1, 1, 2, 3, none) /* a b -> a a b */ DEF( dup2, 1, 2, 4, none) /* a b -> a b a b */ DEF( dup3, 1, 3, 6, none) /* a b c -> a b c a b c */ DEF( insert2, 1, 2, 3, none) /* obj a -> a obj a (dup_x1) */ DEF( insert3, 1, 3, 4, none) /* obj prop a -> a obj prop a (dup_x2) */ DEF( insert4, 1, 4, 5, none) /* this obj prop a -> a this obj prop a */ DEF( perm3, 1, 3, 3, none) /* obj a b -> a obj b */ DEF( perm4, 1, 4, 4, none) /* obj prop a b -> a obj prop b */ DEF( perm5, 1, 5, 5, none) /* this obj prop a b -> a this obj prop b */ DEF( swap, 1, 2, 2, none) /* a b -> b a */ DEF( swap2, 1, 4, 4, none) /* a b c d -> c d a b */ DEF( rot3l, 1, 3, 3, none) /* x a b -> a b x */ DEF( rot3r, 1, 3, 3, none) /* a b x -> x a b */ DEF( rot4l, 1, 4, 4, none) /* x a b c -> a b c x */ DEF( rot5l, 1, 5, 5, none) /* x a b c d -> a b c d x */ DEF(call_constructor, 3, 2, 1, npop) /* func new.target args -> ret. arguments are not counted in n_pop */ DEF( call, 3, 1, 1, npop) /* arguments are not counted in n_pop */ DEF( tail_call, 3, 1, 0, npop) /* arguments are not counted in n_pop */ DEF( call_method, 3, 2, 1, npop) /* arguments are not counted in n_pop */ DEF(tail_call_method, 3, 2, 0, npop) /* arguments are not counted in n_pop */ DEF( array_from, 3, 0, 1, npop) /* arguments are not counted in n_pop */ DEF( apply, 3, 3, 1, u16) DEF( return, 1, 1, 0, none) DEF( return_undef, 1, 0, 0, none) DEF(check_ctor_return, 1, 1, 2, none) DEF( check_ctor, 1, 0, 0, none) DEF( init_ctor, 1, 0, 1, none) DEF( check_brand, 1, 2, 2, none) /* this_obj func -> this_obj func */ DEF( add_brand, 1, 2, 0, none) /* this_obj home_obj -> */ DEF( return_async, 1, 1, 0, none) DEF( throw, 1, 1, 0, none) DEF( throw_error, 6, 0, 0, atom_u8) DEF( eval, 5, 1, 1, npop_u16) /* func args... -> ret_val */ DEF( apply_eval, 3, 2, 1, u16) /* func array -> ret_eval */ DEF( regexp, 1, 2, 1, none) /* create a RegExp object from the pattern and a bytecode string */ DEF( get_super, 1, 1, 1, none) DEF( import, 1, 1, 1, none) /* dynamic module import */ DEF( check_var, 5, 0, 1, atom) /* check if a variable exists */ DEF( get_var_undef, 5, 0, 1, atom) /* push undefined if the variable does not exist */ DEF( get_var, 5, 0, 1, atom) /* throw an exception if the variable does not exist */ DEF( put_var, 5, 1, 0, atom) /* must come after get_var */ DEF( put_var_init, 5, 1, 0, atom) /* must come after put_var. Used to initialize a global lexical variable */ DEF( put_var_strict, 5, 2, 0, atom) /* for strict mode variable write */ DEF( get_ref_value, 1, 2, 3, none) DEF( put_ref_value, 1, 3, 0, none) DEF( define_var, 6, 0, 0, atom_u8) DEF(check_define_var, 6, 0, 0, atom_u8) DEF( define_func, 6, 1, 0, atom_u8) // order matters, see IC counterparts DEF( get_field, 5, 1, 1, atom) DEF( get_field2, 5, 1, 2, atom) DEF( put_field, 5, 2, 0, atom) DEF( get_private_field, 1, 2, 1, none) /* obj prop -> value */ DEF( put_private_field, 1, 3, 0, none) /* obj value prop -> */ DEF(define_private_field, 1, 3, 1, none) /* obj prop value -> obj */ DEF( get_array_el, 1, 2, 1, none) DEF( get_array_el2, 1, 2, 2, none) /* obj prop -> obj value */ DEF( put_array_el, 1, 3, 0, none) DEF(get_super_value, 1, 3, 1, none) /* this obj prop -> value */ DEF(put_super_value, 1, 4, 0, none) /* this obj prop value -> */ DEF( define_field, 5, 2, 1, atom) DEF( set_name, 5, 1, 1, atom) DEF(set_name_computed, 1, 2, 2, none) DEF( set_proto, 1, 2, 1, none) DEF(set_home_object, 1, 2, 2, none) DEF(define_array_el, 1, 3, 2, none) DEF( append, 1, 3, 2, none) /* append enumerated object, update length */ DEF(copy_data_properties, 2, 3, 3, u8) DEF( define_method, 6, 2, 1, atom_u8) DEF(define_method_computed, 2, 3, 1, u8) /* must come after define_method */ DEF( define_class, 6, 2, 2, atom_u8) /* parent ctor -> ctor proto */ DEF( define_class_computed, 6, 3, 3, atom_u8) /* field_name parent ctor -> field_name ctor proto (class with computed name) */ DEF( get_loc, 3, 0, 1, loc) DEF( put_loc, 3, 1, 0, loc) /* must come after get_loc */ DEF( set_loc, 3, 1, 1, loc) /* must come after put_loc */ DEF( get_arg, 3, 0, 1, arg) DEF( put_arg, 3, 1, 0, arg) /* must come after get_arg */ DEF( set_arg, 3, 1, 1, arg) /* must come after put_arg */ DEF( get_var_ref, 3, 0, 1, var_ref) DEF( put_var_ref, 3, 1, 0, var_ref) /* must come after get_var_ref */ DEF( set_var_ref, 3, 1, 1, var_ref) /* must come after put_var_ref */ DEF(set_loc_uninitialized, 3, 0, 0, loc) DEF( get_loc_check, 3, 0, 1, loc) DEF( put_loc_check, 3, 1, 0, loc) /* must come after get_loc_check */ DEF( put_loc_check_init, 3, 1, 0, loc) DEF(get_var_ref_check, 3, 0, 1, var_ref) DEF(put_var_ref_check, 3, 1, 0, var_ref) /* must come after get_var_ref_check */ DEF(put_var_ref_check_init, 3, 1, 0, var_ref) DEF( close_loc, 3, 0, 0, loc) DEF( if_false, 5, 1, 0, label) DEF( if_true, 5, 1, 0, label) /* must come after if_false */ DEF( goto, 5, 0, 0, label) /* must come after if_true */ DEF( catch, 5, 0, 1, label) DEF( gosub, 5, 0, 0, label) /* used to execute the finally block */ DEF( ret, 1, 1, 0, none) /* used to return from the finally block */ DEF( nip_catch, 1, 2, 1, none) /* catch ... a -> a */ DEF( to_object, 1, 1, 1, none) //DEF( to_string, 1, 1, 1, none) DEF( to_propkey, 1, 1, 1, none) DEF( to_propkey2, 1, 2, 2, none) DEF( with_get_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_put_var, 10, 2, 1, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_delete_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_make_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_get_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_get_ref_undef, 10, 1, 0, atom_label_u8) DEF( make_loc_ref, 7, 0, 2, atom_u16) DEF( make_arg_ref, 7, 0, 2, atom_u16) DEF(make_var_ref_ref, 7, 0, 2, atom_u16) DEF( make_var_ref, 5, 0, 2, atom) DEF( for_in_start, 1, 1, 1, none) DEF( for_of_start, 1, 1, 3, none) DEF(for_await_of_start, 1, 1, 3, none) DEF( for_in_next, 1, 1, 3, none) DEF( for_of_next, 2, 3, 5, u8) DEF(iterator_check_object, 1, 1, 1, none) DEF(iterator_get_value_done, 1, 1, 2, none) DEF( iterator_close, 1, 3, 0, none) DEF( iterator_next, 1, 4, 4, none) DEF( iterator_call, 2, 4, 5, u8) DEF( initial_yield, 1, 0, 0, none) DEF( yield, 1, 1, 2, none) DEF( yield_star, 1, 1, 2, none) DEF(async_yield_star, 1, 1, 2, none) DEF( await, 1, 1, 1, none) /* arithmetic/logic operations */ DEF( neg, 1, 1, 1, none) DEF( plus, 1, 1, 1, none) DEF( dec, 1, 1, 1, none) DEF( inc, 1, 1, 1, none) DEF( post_dec, 1, 1, 2, none) DEF( post_inc, 1, 1, 2, none) DEF( dec_loc, 2, 0, 0, loc8) DEF( inc_loc, 2, 0, 0, loc8) DEF( add_loc, 2, 1, 0, loc8) DEF( not, 1, 1, 1, none) DEF( lnot, 1, 1, 1, none) DEF( typeof, 1, 1, 1, none) DEF( delete, 1, 2, 1, none) DEF( delete_var, 5, 0, 1, atom) /* warning: order matters (see js_parse_assign_expr) */ DEF( mul, 1, 2, 1, none) DEF( div, 1, 2, 1, none) DEF( mod, 1, 2, 1, none) DEF( add, 1, 2, 1, none) DEF( sub, 1, 2, 1, none) DEF( shl, 1, 2, 1, none) DEF( sar, 1, 2, 1, none) DEF( shr, 1, 2, 1, none) DEF( and, 1, 2, 1, none) DEF( xor, 1, 2, 1, none) DEF( or, 1, 2, 1, none) DEF( pow, 1, 2, 1, none) DEF( lt, 1, 2, 1, none) DEF( lte, 1, 2, 1, none) DEF( gt, 1, 2, 1, none) DEF( gte, 1, 2, 1, none) DEF( instanceof, 1, 2, 1, none) DEF( in, 1, 2, 1, none) DEF( eq, 1, 2, 1, none) DEF( neq, 1, 2, 1, none) DEF( strict_eq, 1, 2, 1, none) DEF( strict_neq, 1, 2, 1, none) DEF(is_undefined_or_null, 1, 1, 1, none) DEF( private_in, 1, 2, 1, none) /* must be the last non short and non temporary opcode */ DEF( nop, 1, 0, 0, none) /* temporary opcodes: never emitted in the final bytecode */ def( enter_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( leave_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( label, 5, 0, 0, label) /* emitted in phase 1, removed in phase 3 */ def(scope_get_var_undef, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_put_var, 7, 1, 0, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_delete_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_make_ref, 11, 0, 2, atom_label_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_ref, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_put_var_init, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_get_private_field, 7, 1, 1, atom_u16) /* obj -> value, emitted in phase 1, removed in phase 2 */ def(scope_get_private_field2, 7, 1, 2, atom_u16) /* obj -> obj value, emitted in phase 1, removed in phase 2 */ def(scope_put_private_field, 7, 2, 0, atom_u16) /* obj value ->, emitted in phase 1, removed in phase 2 */ def(scope_in_private_field, 7, 1, 1, atom_u16) /* obj -> res emitted in phase 1, removed in phase 2 */ def(get_field_opt_chain, 5, 1, 1, atom) /* emitted in phase 1, removed in phase 2 */ def(get_array_el_opt_chain, 1, 2, 1, none) /* emitted in phase 1, removed in phase 2 */ def( set_class_name, 5, 1, 1, u32) /* emitted in phase 1, removed in phase 2 */ def( source_loc, 9, 0, 0, u32x2) /* emitted in phase 1, removed in phase 3 */ DEF( push_minus1, 1, 0, 1, none_int) DEF( push_0, 1, 0, 1, none_int) DEF( push_1, 1, 0, 1, none_int) DEF( push_2, 1, 0, 1, none_int) DEF( push_3, 1, 0, 1, none_int) DEF( push_4, 1, 0, 1, none_int) DEF( push_5, 1, 0, 1, none_int) DEF( push_6, 1, 0, 1, none_int) DEF( push_7, 1, 0, 1, none_int) DEF( push_i8, 2, 0, 1, i8) DEF( push_i16, 3, 0, 1, i16) DEF( push_const8, 2, 0, 1, const8) DEF( fclosure8, 2, 0, 1, const8) /* must follow push_const8 */ DEF(push_empty_string, 1, 0, 1, none) DEF( get_loc8, 2, 0, 1, loc8) DEF( put_loc8, 2, 1, 0, loc8) DEF( set_loc8, 2, 1, 1, loc8) DEF( get_loc0_loc1, 1, 0, 2, none_loc) DEF( get_loc0, 1, 0, 1, none_loc) DEF( get_loc1, 1, 0, 1, none_loc) DEF( get_loc2, 1, 0, 1, none_loc) DEF( get_loc3, 1, 0, 1, none_loc) DEF( put_loc0, 1, 1, 0, none_loc) DEF( put_loc1, 1, 1, 0, none_loc) DEF( put_loc2, 1, 1, 0, none_loc) DEF( put_loc3, 1, 1, 0, none_loc) DEF( set_loc0, 1, 1, 1, none_loc) DEF( set_loc1, 1, 1, 1, none_loc) DEF( set_loc2, 1, 1, 1, none_loc) DEF( set_loc3, 1, 1, 1, none_loc) DEF( get_arg0, 1, 0, 1, none_arg) DEF( get_arg1, 1, 0, 1, none_arg) DEF( get_arg2, 1, 0, 1, none_arg) DEF( get_arg3, 1, 0, 1, none_arg) DEF( put_arg0, 1, 1, 0, none_arg) DEF( put_arg1, 1, 1, 0, none_arg) DEF( put_arg2, 1, 1, 0, none_arg) DEF( put_arg3, 1, 1, 0, none_arg) DEF( set_arg0, 1, 1, 1, none_arg) DEF( set_arg1, 1, 1, 1, none_arg) DEF( set_arg2, 1, 1, 1, none_arg) DEF( set_arg3, 1, 1, 1, none_arg) DEF( get_var_ref0, 1, 0, 1, none_var_ref) DEF( get_var_ref1, 1, 0, 1, none_var_ref) DEF( get_var_ref2, 1, 0, 1, none_var_ref) DEF( get_var_ref3, 1, 0, 1, none_var_ref) DEF( put_var_ref0, 1, 1, 0, none_var_ref) DEF( put_var_ref1, 1, 1, 0, none_var_ref) DEF( put_var_ref2, 1, 1, 0, none_var_ref) DEF( put_var_ref3, 1, 1, 0, none_var_ref) DEF( set_var_ref0, 1, 1, 1, none_var_ref) DEF( set_var_ref1, 1, 1, 1, none_var_ref) DEF( set_var_ref2, 1, 1, 1, none_var_ref) DEF( set_var_ref3, 1, 1, 1, none_var_ref) DEF( get_length, 1, 1, 1, none) DEF( if_false8, 2, 1, 0, label8) DEF( if_true8, 2, 1, 0, label8) /* must come after if_false8 */ DEF( goto8, 2, 0, 0, label8) /* must come after if_true8 */ DEF( goto16, 3, 0, 0, label16) DEF( call0, 1, 1, 1, npopx) DEF( call1, 1, 1, 1, npopx) DEF( call2, 1, 1, 1, npopx) DEF( call3, 1, 1, 1, npopx) DEF( is_undefined, 1, 1, 1, none) DEF( is_null, 1, 1, 1, none) DEF(typeof_is_undefined, 1, 1, 1, none) DEF( typeof_is_function, 1, 1, 1, none) #undef DEF #undef def #endif /* DEF */ #undef def #undef DEF #undef FMT OP_TEMP_END, } OPCodeEnum; static int JS_InitAtoms(JSRuntime *rt); static JSAtom __JS_NewAtomInit(JSRuntime *rt, const char *str, int len, int atom_type); static void JS_FreeAtomStruct(JSRuntime *rt, JSAtomStruct *p); static void free_function_bytecode(JSRuntime *rt, JSFunctionBytecode *b); static JSValue js_call_c_function(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags); static JSValue js_call_bound_function(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags); static JSValue JS_CallInternal(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, JSValueConst new_target, int argc, JSValueConst *argv, int flags); static JSValue JS_CallConstructorInternal(JSContext *ctx, JSValueConst func_obj, JSValueConst new_target, int argc, JSValueConst *argv, int flags); static JSValue JS_CallFree(JSContext *ctx, JSValue func_obj, JSValueConst this_obj, int argc, JSValueConst *argv); static JSValue JS_InvokeFree(JSContext *ctx, JSValue this_val, JSAtom atom, int argc, JSValueConst *argv); static __exception int JS_ToArrayLengthFree(JSContext *ctx, uint32_t *plen, JSValue val, bool is_array_ctor); static JSValue JS_EvalObject(JSContext *ctx, JSValueConst this_obj, JSValueConst val, int flags, int scope_idx); JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowInternalError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...); static __maybe_unused void JS_DumpString(JSRuntime *rt, JSString *p); static __maybe_unused void JS_DumpObjectHeader(JSRuntime *rt); static __maybe_unused void JS_DumpObject(JSRuntime *rt, JSObject *p); static __maybe_unused void JS_DumpGCObject(JSRuntime *rt, JSGCObjectHeader *p); static __maybe_unused void JS_DumpValue(JSRuntime *rt, JSValueConst val); static __maybe_unused void JS_DumpAtoms(JSRuntime *rt); static __maybe_unused void JS_DumpShapes(JSRuntime *rt); static JSValue js_function_apply(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic); static void js_array_finalizer(JSRuntime *rt, JSValueConst val); static void js_array_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_object_data_finalizer(JSRuntime *rt, JSValueConst val); static void js_object_data_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_c_function_finalizer(JSRuntime *rt, JSValueConst val); static void js_c_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_bytecode_function_finalizer(JSRuntime *rt, JSValueConst val); static void js_bytecode_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_bound_function_finalizer(JSRuntime *rt, JSValueConst val); static void js_bound_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_for_in_iterator_finalizer(JSRuntime *rt, JSValueConst val); static void js_for_in_iterator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_regexp_finalizer(JSRuntime *rt, JSValueConst val); static void js_array_buffer_finalizer(JSRuntime *rt, JSValueConst val); static void js_typed_array_finalizer(JSRuntime *rt, JSValueConst val); static void js_typed_array_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_proxy_finalizer(JSRuntime *rt, JSValueConst val); static void js_proxy_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_map_finalizer(JSRuntime *rt, JSValueConst val); static void js_map_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_map_iterator_finalizer(JSRuntime *rt, JSValueConst val); static void js_map_iterator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_array_iterator_finalizer(JSRuntime *rt, JSValueConst val); static void js_array_iterator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_iterator_helper_finalizer(JSRuntime *rt, JSValueConst val); static void js_iterator_helper_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_iterator_wrap_finalizer(JSRuntime *rt, JSValueConst val); static void js_iterator_wrap_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_regexp_string_iterator_finalizer(JSRuntime *rt, JSValueConst val); static void js_regexp_string_iterator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_generator_finalizer(JSRuntime *rt, JSValueConst val); static void js_generator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_promise_finalizer(JSRuntime *rt, JSValueConst val); static void js_promise_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static void js_promise_resolve_function_finalizer(JSRuntime *rt, JSValueConst val); static void js_promise_resolve_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); #define HINT_STRING 0 #define HINT_NUMBER 1 #define HINT_NONE 2 #define HINT_FORCE_ORDINARY (1 << 4) // don't try Symbol.toPrimitive static JSValue JS_ToPrimitiveFree(JSContext *ctx, JSValue val, int hint); static JSValue JS_ToStringFree(JSContext *ctx, JSValue val); static int JS_ToBoolFree(JSContext *ctx, JSValue val); static int JS_ToInt32Free(JSContext *ctx, int32_t *pres, JSValue val); static int JS_ToFloat64Free(JSContext *ctx, double *pres, JSValue val); static int JS_ToUint8ClampFree(JSContext *ctx, int32_t *pres, JSValue val); static JSValue js_new_string8_len(JSContext *ctx, const char *buf, int len); static JSValue js_compile_regexp(JSContext *ctx, JSValueConst pattern, JSValueConst flags); static JSValue js_regexp_constructor_internal(JSContext *ctx, JSValueConst ctor, JSValue pattern, JSValue bc); static void gc_decref(JSRuntime *rt); static int JS_NewClass1(JSRuntime *rt, JSClassID class_id, const JSClassDef *class_def, JSAtom name); static JSValue js_array_push(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int unshift); typedef enum JSStrictEqModeEnum { JS_EQ_STRICT, JS_EQ_SAME_VALUE, JS_EQ_SAME_VALUE_ZERO, } JSStrictEqModeEnum; static bool js_strict_eq2(JSContext *ctx, JSValue op1, JSValue op2, JSStrictEqModeEnum eq_mode); static bool js_strict_eq(JSContext *ctx, JSValue op1, JSValue op2); static bool js_same_value(JSContext *ctx, JSValueConst op1, JSValueConst op2); static bool js_same_value_zero(JSContext *ctx, JSValueConst op1, JSValueConst op2); static JSValue JS_ToObjectFree(JSContext *ctx, JSValue val); static JSProperty *add_property(JSContext *ctx, JSObject *p, JSAtom prop, int prop_flags); static JSValue JS_NewBigInt(JSContext *ctx); static inline bf_t *JS_GetBigInt(JSValueConst val) { JSBigInt *p = JS_VALUE_GET_PTR(val); return &p->num; } static JSValue JS_CompactBigInt1(JSContext *ctx, JSValue val); static JSValue JS_CompactBigInt(JSContext *ctx, JSValue val); static int JS_ToBigInt64Free(JSContext *ctx, int64_t *pres, JSValue val); static bf_t *JS_ToBigInt(JSContext *ctx, bf_t *buf, JSValueConst val); static bf_t *JS_ToBigInt1(JSContext *ctx, bf_t *buf, JSValueConst val); static void JS_FreeBigInt(JSContext *ctx, bf_t *a, bf_t *buf); JSValue JS_ThrowOutOfMemory(JSContext *ctx); static JSValue JS_ThrowTypeErrorRevokedProxy(JSContext *ctx); static JSValue js_proxy_getPrototypeOf(JSContext *ctx, JSValueConst obj); static int js_proxy_setPrototypeOf(JSContext *ctx, JSValueConst obj, JSValueConst proto_val, bool throw_flag); static int js_proxy_isExtensible(JSContext *ctx, JSValueConst obj); static int js_proxy_preventExtensions(JSContext *ctx, JSValueConst obj); static int js_proxy_isArray(JSContext *ctx, JSValueConst obj); static int JS_CreateProperty(JSContext *ctx, JSObject *p, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags); static int js_string_memcmp(JSString *p1, JSString *p2, int len); static void reset_weak_ref(JSRuntime *rt, JSWeakRefRecord **first_weak_ref); static bool is_valid_weakref_target(JSValueConst val); static void insert_weakref_record(JSValueConst target, struct JSWeakRefRecord *wr); static JSValue js_array_buffer_constructor3(JSContext *ctx, JSValueConst new_target, uint64_t len, uint64_t *max_len, JSClassID class_id, uint8_t *buf, JSFreeArrayBufferDataFunc *free_func, void *opaque, bool alloc_flag); static void js_array_buffer_free(JSRuntime *rt, void *opaque, void *ptr); static JSArrayBuffer *js_get_array_buffer(JSContext *ctx, JSValueConst obj); static bool array_buffer_is_resizable(const JSArrayBuffer *abuf); static JSValue js_typed_array_constructor(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int classid); static JSValue js_typed_array_constructor_ta(JSContext *ctx, JSValueConst new_target, JSValueConst src_obj, int classid, uint32_t len); static bool is_typed_array(JSClassID class_id); static bool typed_array_is_oob(JSObject *p); static uint32_t typed_array_get_length(JSContext *ctx, JSObject *p); static JSValue JS_ThrowTypeErrorDetachedArrayBuffer(JSContext *ctx); static JSValue JS_ThrowTypeErrorArrayBufferOOB(JSContext *ctx); static JSVarRef *get_var_ref(JSContext *ctx, JSStackFrame *sf, int var_idx, bool is_arg); static JSValue js_generator_function_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags); static void js_async_function_resolve_finalizer(JSRuntime *rt, JSValueConst val); static void js_async_function_resolve_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static JSValue JS_EvalInternal(JSContext *ctx, JSValueConst this_obj, const char *input, size_t input_len, const char *filename, int line, int flags, int scope_idx); static void js_free_module_def(JSContext *ctx, JSModuleDef *m); static void js_mark_module_def(JSRuntime *rt, JSModuleDef *m, JS_MarkFunc *mark_func); static JSValue js_import_meta(JSContext *ctx); static JSValue js_dynamic_import(JSContext *ctx, JSValueConst specifier); static void free_var_ref(JSRuntime *rt, JSVarRef *var_ref); static JSValue js_new_promise_capability(JSContext *ctx, JSValue *resolving_funcs, JSValueConst ctor); static __exception int perform_promise_then(JSContext *ctx, JSValueConst promise, JSValueConst *resolve_reject, JSValueConst *cap_resolving_funcs); static JSValue js_promise_resolve(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic); static JSValue js_promise_then(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv); static bool js_string_eq(JSString *p1, JSString *p2); static int js_string_compare(JSString *p1, JSString *p2); static int JS_SetPropertyValue(JSContext *ctx, JSValueConst this_obj, JSValue prop, JSValue val, int flags); static int JS_NumberIsInteger(JSContext *ctx, JSValueConst val); static bool JS_NumberIsNegativeOrMinusZero(JSContext *ctx, JSValueConst val); static JSValue JS_ToNumberFree(JSContext *ctx, JSValue val); static int JS_GetOwnPropertyInternal(JSContext *ctx, JSPropertyDescriptor *desc, JSObject *p, JSAtom prop); static void js_free_desc(JSContext *ctx, JSPropertyDescriptor *desc); static void async_func_mark(JSRuntime *rt, JSAsyncFunctionState *s, JS_MarkFunc *mark_func); static void JS_AddIntrinsicBasicObjects(JSContext *ctx); static void js_free_shape(JSRuntime *rt, JSShape *sh); static void js_free_shape_null(JSRuntime *rt, JSShape *sh); static int js_shape_prepare_update(JSContext *ctx, JSObject *p, JSShapeProperty **pprs); static int init_shape_hash(JSRuntime *rt); static __exception int js_get_length32(JSContext *ctx, uint32_t *pres, JSValueConst obj); static __exception int js_get_length64(JSContext *ctx, int64_t *pres, JSValueConst obj); static __exception int js_set_length64(JSContext *ctx, JSValueConst obj, int64_t len); static void free_arg_list(JSContext *ctx, JSValue *tab, uint32_t len); static JSValue *build_arg_list(JSContext *ctx, uint32_t *plen, JSValueConst array_arg); static JSValue js_create_array(JSContext *ctx, int len, JSValueConst *tab); static bool js_get_fast_array(JSContext *ctx, JSValue obj, JSValue **arrpp, uint32_t *countp); static int expand_fast_array(JSContext *ctx, JSObject *p, uint32_t new_len); static JSValue JS_CreateAsyncFromSyncIterator(JSContext *ctx, JSValue sync_iter); static void js_c_function_data_finalizer(JSRuntime *rt, JSValueConst val); static void js_c_function_data_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func); static JSValue js_c_function_data_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_val, int argc, JSValueConst *argv, int flags); static JSAtom js_symbol_to_atom(JSContext *ctx, JSValueConst val); static void add_gc_object(JSRuntime *rt, JSGCObjectHeader *h, JSGCObjectTypeEnum type); static void remove_gc_object(JSGCObjectHeader *h); static void js_async_function_free0(JSRuntime *rt, JSAsyncFunctionData *s); static JSValue js_instantiate_prototype(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque); static JSValue js_module_ns_autoinit(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque); static JSValue JS_InstantiateFunctionListItem2(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque); static void js_set_uncatchable_error(JSContext *ctx, JSValueConst val, bool flag); static JSValue js_new_callsite(JSContext *ctx, JSCallSiteData *csd); static void js_new_callsite_data(JSContext *ctx, JSCallSiteData *csd, JSStackFrame *sf); static void js_new_callsite_data2(JSContext *ctx, JSCallSiteData *csd, const char *filename, int line_num, int col_num); static void _JS_AddIntrinsicCallSite(JSContext *ctx); static void JS_SetOpaqueInternal(JSValueConst obj, void *opaque); static const JSClassExoticMethods js_arguments_exotic_methods; static const JSClassExoticMethods js_string_exotic_methods; static const JSClassExoticMethods js_proxy_exotic_methods; static const JSClassExoticMethods js_module_ns_exotic_methods; static inline bool double_is_int32(double d) { uint64_t u, e; JSFloat64Union t; t.d = d; u = t.u64; e = ((u >> 52) & 0x7FF) - 1023; if (e > 30) { // accept 0, INT32_MIN, reject too large, too small, nan, inf, -0 return !u || (u == 0xc1e0000000000000); } else { // shift out sign, exponent and whole part bits // value is fractional if remaining low bits are non-zero return !(u << 12 << e); } } static JSValue js_float64(double d) { return __JS_NewFloat64(d); } static int compare_u32(uint32_t a, uint32_t b) { return -(a < b) + (b < a); // -1, 0 or 1 } static JSValue js_int32(int32_t v) { return JS_MKVAL(JS_TAG_INT, v); } static JSValue js_uint32(uint32_t v) { if (v <= INT32_MAX) return js_int32(v); else return js_float64(v); } static JSValue js_int64(int64_t v) { if (v >= INT32_MIN && v <= INT32_MAX) return js_int32(v); else return js_float64(v); } #define JS_NewInt64(ctx, val) js_int64(val) static JSValue js_number(double d) { if (double_is_int32(d)) return js_int32((int32_t)d); else return js_float64(d); } JSValue JS_NewNumber(JSContext *ctx, double d) { return js_number(d); } static JSValue js_bool(bool v) { return JS_MKVAL(JS_TAG_BOOL, (v != 0)); } static JSValue js_dup(JSValueConst v) { if (JS_VALUE_HAS_REF_COUNT(v)) { JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v); p->ref_count++; } return unsafe_unconst(v); } JSValue JS_DupValue(JSContext *ctx, JSValueConst v) { return js_dup(v); } JSValue JS_DupValueRT(JSRuntime *rt, JSValueConst v) { return js_dup(v); } static void js_trigger_gc(JSRuntime *rt, size_t size) { bool force_gc; #ifdef FORCE_GC_AT_MALLOC force_gc = true; #else force_gc = ((rt->malloc_state.malloc_size + size) > rt->malloc_gc_threshold); #endif if (force_gc) { #ifdef ENABLE_DUMPS // JS_DUMP_GC if (check_dump_flag(rt, JS_DUMP_GC)) { printf("GC: size=%zd\n", rt->malloc_state.malloc_size); } #endif JS_RunGC(rt); rt->malloc_gc_threshold = rt->malloc_state.malloc_size + (rt->malloc_state.malloc_size >> 1); } } static size_t js_malloc_usable_size_unknown(const void *ptr) { return 0; } void *js_calloc_rt(JSRuntime *rt, size_t count, size_t size) { void *ptr; JSMallocState *s; /* Do not allocate zero bytes: behavior is platform dependent */ assert(count != 0 && size != 0); if (size > 0) if (unlikely(count != (count * size) / size)) return NULL; s = &rt->malloc_state; /* When malloc_limit is 0 (unlimited), malloc_limit - 1 will be SIZE_MAX. */ if (unlikely(s->malloc_size + (count * size) > s->malloc_limit - 1)) return NULL; ptr = rt->mf.js_calloc(s->opaque, count, size); if (!ptr) return NULL; s->malloc_count++; s->malloc_size += rt->mf.js_malloc_usable_size(ptr) + MALLOC_OVERHEAD; return ptr; } void *js_malloc_rt(JSRuntime *rt, size_t size) { void *ptr; JSMallocState *s; /* Do not allocate zero bytes: behavior is platform dependent */ assert(size != 0); s = &rt->malloc_state; /* When malloc_limit is 0 (unlimited), malloc_limit - 1 will be SIZE_MAX. */ if (unlikely(s->malloc_size + size > s->malloc_limit - 1)) return NULL; ptr = rt->mf.js_malloc(s->opaque, size); if (!ptr) return NULL; s->malloc_count++; s->malloc_size += rt->mf.js_malloc_usable_size(ptr) + MALLOC_OVERHEAD; return ptr; } void js_free_rt(JSRuntime *rt, void *ptr) { JSMallocState *s; if (!ptr) return; s = &rt->malloc_state; s->malloc_count--; s->malloc_size -= rt->mf.js_malloc_usable_size(ptr) + MALLOC_OVERHEAD; rt->mf.js_free(s->opaque, ptr); } void *js_realloc_rt(JSRuntime *rt, void *ptr, size_t size) { size_t old_size; JSMallocState *s; if (!ptr) { if (size == 0) return NULL; return js_malloc_rt(rt, size); } if (unlikely(size == 0)) { js_free_rt(rt, ptr); return NULL; } old_size = rt->mf.js_malloc_usable_size(ptr); s = &rt->malloc_state; /* When malloc_limit is 0 (unlimited), malloc_limit - 1 will be SIZE_MAX. */ if (s->malloc_size + size - old_size > s->malloc_limit - 1) return NULL; ptr = rt->mf.js_realloc(s->opaque, ptr, size); if (!ptr) return NULL; s->malloc_size += rt->mf.js_malloc_usable_size(ptr) - old_size; return ptr; } size_t js_malloc_usable_size_rt(JSRuntime *rt, const void *ptr) { return rt->mf.js_malloc_usable_size(ptr); } /** * This used to be implemented as malloc + memset, but using calloc * yields better performance in initial, bursty allocations, something useful * for QuickJS. * * More information: https://github.com/quickjs-ng/quickjs/pull/519 */ void *js_mallocz_rt(JSRuntime *rt, size_t size) { return js_calloc_rt(rt, 1, size); } /* called by libbf */ static void *js_bf_realloc(void *opaque, void *ptr, size_t size) { JSRuntime *rt = opaque; return js_realloc_rt(rt, ptr, size); } /* Throw out of memory in case of error */ void *js_calloc(JSContext *ctx, size_t count, size_t size) { void *ptr; ptr = js_calloc_rt(ctx->rt, count, size); if (unlikely(!ptr)) { JS_ThrowOutOfMemory(ctx); return NULL; } return ptr; } /* Throw out of memory in case of error */ void *js_malloc(JSContext *ctx, size_t size) { void *ptr; ptr = js_malloc_rt(ctx->rt, size); if (unlikely(!ptr)) { JS_ThrowOutOfMemory(ctx); return NULL; } return ptr; } /* Throw out of memory in case of error */ void *js_mallocz(JSContext *ctx, size_t size) { void *ptr; ptr = js_mallocz_rt(ctx->rt, size); if (unlikely(!ptr)) { JS_ThrowOutOfMemory(ctx); return NULL; } return ptr; } void js_free(JSContext *ctx, void *ptr) { js_free_rt(ctx->rt, ptr); } /* Throw out of memory in case of error */ void *js_realloc(JSContext *ctx, void *ptr, size_t size) { void *ret; ret = js_realloc_rt(ctx->rt, ptr, size); if (unlikely(!ret && size != 0)) { JS_ThrowOutOfMemory(ctx); return NULL; } return ret; } /* store extra allocated size in *pslack if successful */ void *js_realloc2(JSContext *ctx, void *ptr, size_t size, size_t *pslack) { void *ret; ret = js_realloc_rt(ctx->rt, ptr, size); if (unlikely(!ret && size != 0)) { JS_ThrowOutOfMemory(ctx); return NULL; } if (pslack) { size_t new_size = js_malloc_usable_size_rt(ctx->rt, ret); *pslack = (new_size > size) ? new_size - size : 0; } return ret; } size_t js_malloc_usable_size(JSContext *ctx, const void *ptr) { return js_malloc_usable_size_rt(ctx->rt, ptr); } /* Throw out of memory exception in case of error */ char *js_strndup(JSContext *ctx, const char *s, size_t n) { char *ptr; ptr = js_malloc(ctx, n + 1); if (ptr) { memcpy(ptr, s, n); ptr[n] = '\0'; } return ptr; } char *js_strdup(JSContext *ctx, const char *str) { return js_strndup(ctx, str, strlen(str)); } static no_inline int js_realloc_array(JSContext *ctx, void **parray, int elem_size, int *psize, int req_size) { int new_size; size_t slack; void *new_array; /* XXX: potential arithmetic overflow */ new_size = max_int(req_size, *psize * 3 / 2); new_array = js_realloc2(ctx, *parray, new_size * elem_size, &slack); if (!new_array) return -1; new_size += slack / elem_size; *psize = new_size; *parray = new_array; return 0; } /* resize the array and update its size if req_size > *psize */ static inline int js_resize_array(JSContext *ctx, void **parray, int elem_size, int *psize, int req_size) { if (unlikely(req_size > *psize)) return js_realloc_array(ctx, parray, elem_size, psize, req_size); else return 0; } static void *js_dbuf_realloc(void *ctx, void *ptr, size_t size) { return js_realloc(ctx, ptr, size); } static inline void js_dbuf_init(JSContext *ctx, DynBuf *s) { dbuf_init2(s, ctx, js_dbuf_realloc); } static inline int is_digit(int c) { return c >= '0' && c <= '9'; } static inline int string_get(JSString *p, int idx) { return p->is_wide_char ? str16(p)[idx] : str8(p)[idx]; } typedef struct JSClassShortDef { JSAtom class_name; JSClassFinalizer *finalizer; JSClassGCMark *gc_mark; } JSClassShortDef; static JSClassShortDef const js_std_class_def[] = { { JS_ATOM_Object, NULL, NULL }, /* JS_CLASS_OBJECT */ { JS_ATOM_Array, js_array_finalizer, js_array_mark }, /* JS_CLASS_ARRAY */ { JS_ATOM_Error, NULL, NULL }, /* JS_CLASS_ERROR */ { JS_ATOM_Number, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_NUMBER */ { JS_ATOM_String, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_STRING */ { JS_ATOM_Boolean, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_BOOLEAN */ { JS_ATOM_Symbol, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_SYMBOL */ { JS_ATOM_Arguments, js_array_finalizer, js_array_mark }, /* JS_CLASS_ARGUMENTS */ { JS_ATOM_Arguments, NULL, NULL }, /* JS_CLASS_MAPPED_ARGUMENTS */ { JS_ATOM_Date, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_DATE */ { JS_ATOM_Object, NULL, NULL }, /* JS_CLASS_MODULE_NS */ { JS_ATOM_Function, js_c_function_finalizer, js_c_function_mark }, /* JS_CLASS_C_FUNCTION */ { JS_ATOM_Function, js_bytecode_function_finalizer, js_bytecode_function_mark }, /* JS_CLASS_BYTECODE_FUNCTION */ { JS_ATOM_Function, js_bound_function_finalizer, js_bound_function_mark }, /* JS_CLASS_BOUND_FUNCTION */ { JS_ATOM_Function, js_c_function_data_finalizer, js_c_function_data_mark }, /* JS_CLASS_C_FUNCTION_DATA */ { JS_ATOM_GeneratorFunction, js_bytecode_function_finalizer, js_bytecode_function_mark }, /* JS_CLASS_GENERATOR_FUNCTION */ { JS_ATOM_ForInIterator, js_for_in_iterator_finalizer, js_for_in_iterator_mark }, /* JS_CLASS_FOR_IN_ITERATOR */ { JS_ATOM_RegExp, js_regexp_finalizer, NULL }, /* JS_CLASS_REGEXP */ { JS_ATOM_ArrayBuffer, js_array_buffer_finalizer, NULL }, /* JS_CLASS_ARRAY_BUFFER */ { JS_ATOM_SharedArrayBuffer, js_array_buffer_finalizer, NULL }, /* JS_CLASS_SHARED_ARRAY_BUFFER */ { JS_ATOM_Uint8ClampedArray, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_UINT8C_ARRAY */ { JS_ATOM_Int8Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_INT8_ARRAY */ { JS_ATOM_Uint8Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_UINT8_ARRAY */ { JS_ATOM_Int16Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_INT16_ARRAY */ { JS_ATOM_Uint16Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_UINT16_ARRAY */ { JS_ATOM_Int32Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_INT32_ARRAY */ { JS_ATOM_Uint32Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_UINT32_ARRAY */ { JS_ATOM_BigInt64Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_BIG_INT64_ARRAY */ { JS_ATOM_BigUint64Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_BIG_UINT64_ARRAY */ { JS_ATOM_Float16Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_FLOAT16_ARRAY */ { JS_ATOM_Float32Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_FLOAT32_ARRAY */ { JS_ATOM_Float64Array, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_FLOAT64_ARRAY */ { JS_ATOM_DataView, js_typed_array_finalizer, js_typed_array_mark }, /* JS_CLASS_DATAVIEW */ { JS_ATOM_BigInt, js_object_data_finalizer, js_object_data_mark }, /* JS_CLASS_BIG_INT */ { JS_ATOM_Map, js_map_finalizer, js_map_mark }, /* JS_CLASS_MAP */ { JS_ATOM_Set, js_map_finalizer, js_map_mark }, /* JS_CLASS_SET */ { JS_ATOM_WeakMap, js_map_finalizer, js_map_mark }, /* JS_CLASS_WEAKMAP */ { JS_ATOM_WeakSet, js_map_finalizer, js_map_mark }, /* JS_CLASS_WEAKSET */ { JS_ATOM_Iterator, NULL, NULL }, /* JS_CLASS_ITERATOR */ { JS_ATOM_IteratorHelper, js_iterator_helper_finalizer, js_iterator_helper_mark }, /* JS_CLASS_ITERATOR_HELPER */ { JS_ATOM_IteratorWrap, js_iterator_wrap_finalizer, js_iterator_wrap_mark }, /* JS_CLASS_ITERATOR_WRAP */ { JS_ATOM_Map_Iterator, js_map_iterator_finalizer, js_map_iterator_mark }, /* JS_CLASS_MAP_ITERATOR */ { JS_ATOM_Set_Iterator, js_map_iterator_finalizer, js_map_iterator_mark }, /* JS_CLASS_SET_ITERATOR */ { JS_ATOM_Array_Iterator, js_array_iterator_finalizer, js_array_iterator_mark }, /* JS_CLASS_ARRAY_ITERATOR */ { JS_ATOM_String_Iterator, js_array_iterator_finalizer, js_array_iterator_mark }, /* JS_CLASS_STRING_ITERATOR */ { JS_ATOM_RegExp_String_Iterator, js_regexp_string_iterator_finalizer, js_regexp_string_iterator_mark }, /* JS_CLASS_REGEXP_STRING_ITERATOR */ { JS_ATOM_Generator, js_generator_finalizer, js_generator_mark }, /* JS_CLASS_GENERATOR */ }; static int init_class_range(JSRuntime *rt, JSClassShortDef const *tab, int start, int count) { JSClassDef cm_s, *cm = &cm_s; int i, class_id; for(i = 0; i < count; i++) { class_id = i + start; memset(cm, 0, sizeof(*cm)); cm->finalizer = tab[i].finalizer; cm->gc_mark = tab[i].gc_mark; if (JS_NewClass1(rt, class_id, cm, tab[i].class_name) < 0) return -1; } return 0; } /* Uses code from LLVM project. */ static inline uintptr_t js_get_stack_pointer(void) { #if defined(__clang__) || defined(__GNUC__) return (uintptr_t)__builtin_frame_address(0); #elif defined(_MSC_VER) return (uintptr_t)_AddressOfReturnAddress(); #else char CharOnStack = 0; // The volatile store here is intended to escape the local variable, to // prevent the compiler from optimizing CharOnStack into anything other // than a char on the stack. // // Tested on: MSVC 2015 - 2019, GCC 4.9 - 9, Clang 3.2 - 9, ICC 13 - 19. char *volatile Ptr = &CharOnStack; return (uintptr_t) Ptr; #endif } static inline bool js_check_stack_overflow(JSRuntime *rt, size_t alloca_size) { uintptr_t sp; sp = js_get_stack_pointer() - alloca_size; return unlikely(sp < rt->stack_limit); } JSRuntime *JS_NewRuntime2(const JSMallocFunctions *mf, void *opaque) { JSRuntime *rt; JSMallocState ms; memset(&ms, 0, sizeof(ms)); ms.opaque = opaque; ms.malloc_limit = 0; rt = mf->js_calloc(opaque, 1, sizeof(JSRuntime)); if (!rt) return NULL; rt->mf = *mf; if (!rt->mf.js_malloc_usable_size) { /* use dummy function if none provided */ rt->mf.js_malloc_usable_size = js_malloc_usable_size_unknown; } /* Inline what js_malloc_rt does since we cannot use it here. */ ms.malloc_count++; ms.malloc_size += rt->mf.js_malloc_usable_size(rt) + MALLOC_OVERHEAD; rt->malloc_state = ms; rt->malloc_gc_threshold = 256 * 1024; bf_context_init(&rt->bf_ctx, js_bf_realloc, rt); init_list_head(&rt->context_list); init_list_head(&rt->gc_obj_list); init_list_head(&rt->gc_zero_ref_count_list); rt->gc_phase = JS_GC_PHASE_NONE; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS init_list_head(&rt->string_list); #endif init_list_head(&rt->job_list); if (JS_InitAtoms(rt)) goto fail; /* create the object, array and function classes */ if (init_class_range(rt, js_std_class_def, JS_CLASS_OBJECT, countof(js_std_class_def)) < 0) goto fail; rt->class_array[JS_CLASS_ARGUMENTS].exotic = &js_arguments_exotic_methods; rt->class_array[JS_CLASS_STRING].exotic = &js_string_exotic_methods; rt->class_array[JS_CLASS_MODULE_NS].exotic = &js_module_ns_exotic_methods; rt->class_array[JS_CLASS_C_FUNCTION].call = js_call_c_function; rt->class_array[JS_CLASS_C_FUNCTION_DATA].call = js_c_function_data_call; rt->class_array[JS_CLASS_BOUND_FUNCTION].call = js_call_bound_function; rt->class_array[JS_CLASS_GENERATOR_FUNCTION].call = js_generator_function_call; if (init_shape_hash(rt)) goto fail; rt->js_class_id_alloc = JS_CLASS_INIT_COUNT; rt->stack_size = JS_DEFAULT_STACK_SIZE; #ifdef __wasi__ rt->stack_size = 0; #endif JS_UpdateStackTop(rt); rt->current_exception = JS_UNINITIALIZED; return rt; fail: JS_FreeRuntime(rt); return NULL; } void *JS_GetRuntimeOpaque(JSRuntime *rt) { return rt->user_opaque; } void JS_SetRuntimeOpaque(JSRuntime *rt, void *opaque) { rt->user_opaque = opaque; } int JS_AddRuntimeFinalizer(JSRuntime *rt, JSRuntimeFinalizer *finalizer, void *arg) { JSRuntimeFinalizerState *fs = js_malloc_rt(rt, sizeof(*fs)); if (!fs) return -1; fs->next = rt->finalizers; fs->finalizer = finalizer; fs->arg = arg; rt->finalizers = fs; return 0; } static void *js_def_calloc(void *opaque, size_t count, size_t size) { return calloc(count, size); } static void *js_def_malloc(void *opaque, size_t size) { return malloc(size); } static void js_def_free(void *opaque, void *ptr) { free(ptr); } static void *js_def_realloc(void *opaque, void *ptr, size_t size) { return realloc(ptr, size); } static const JSMallocFunctions def_malloc_funcs = { js_def_calloc, js_def_malloc, js_def_free, js_def_realloc, js__malloc_usable_size }; JSRuntime *JS_NewRuntime(void) { return JS_NewRuntime2(&def_malloc_funcs, NULL); } void JS_SetMemoryLimit(JSRuntime *rt, size_t limit) { rt->malloc_state.malloc_limit = limit; } void JS_SetDumpFlags(JSRuntime *rt, uint64_t flags) { #ifdef ENABLE_DUMPS rt->dump_flags = flags; #endif } uint64_t JS_GetDumpFlags(JSRuntime *rt) { #ifdef ENABLE_DUMPS return rt->dump_flags; #else return 0; #endif } size_t JS_GetGCThreshold(JSRuntime *rt) { return rt->malloc_gc_threshold; } /* use -1 to disable automatic GC */ void JS_SetGCThreshold(JSRuntime *rt, size_t gc_threshold) { rt->malloc_gc_threshold = gc_threshold; } #define malloc(s) malloc_is_forbidden(s) #define free(p) free_is_forbidden(p) #define realloc(p,s) realloc_is_forbidden(p,s) void JS_SetInterruptHandler(JSRuntime *rt, JSInterruptHandler *cb, void *opaque) { rt->interrupt_handler = cb; rt->interrupt_opaque = opaque; } void JS_SetCanBlock(JSRuntime *rt, bool can_block) { rt->can_block = can_block; } void JS_SetSharedArrayBufferFunctions(JSRuntime *rt, const JSSharedArrayBufferFunctions *sf) { rt->sab_funcs = *sf; } /* return 0 if OK, < 0 if exception */ int JS_EnqueueJob(JSContext *ctx, JSJobFunc *job_func, int argc, JSValueConst *argv) { JSRuntime *rt = ctx->rt; JSJobEntry *e; int i; assert(!rt->in_free); e = js_malloc(ctx, sizeof(*e) + argc * sizeof(JSValue)); if (!e) return -1; e->ctx = ctx; e->job_func = job_func; e->argc = argc; for(i = 0; i < argc; i++) { e->argv[i] = js_dup(argv[i]); } list_add_tail(&e->link, &rt->job_list); return 0; } bool JS_IsJobPending(JSRuntime *rt) { return !list_empty(&rt->job_list); } /* return < 0 if exception, 0 if no job pending, 1 if a job was executed successfully. the context of the job is stored in '*pctx' */ int JS_ExecutePendingJob(JSRuntime *rt, JSContext **pctx) { JSContext *ctx; JSJobEntry *e; JSValue res; int i, ret; if (list_empty(&rt->job_list)) { *pctx = NULL; return 0; } /* get the first pending job and execute it */ e = list_entry(rt->job_list.next, JSJobEntry, link); list_del(&e->link); ctx = e->ctx; res = e->job_func(e->ctx, e->argc, vc(e->argv)); for(i = 0; i < e->argc; i++) JS_FreeValue(ctx, e->argv[i]); if (JS_IsException(res)) ret = -1; else ret = 1; JS_FreeValue(ctx, res); js_free(ctx, e); *pctx = ctx; return ret; } static inline uint32_t atom_get_free(const JSAtomStruct *p) { return (uintptr_t)p >> 1; } static inline bool atom_is_free(const JSAtomStruct *p) { return (uintptr_t)p & 1; } static inline JSAtomStruct *atom_set_free(uint32_t v) { return (JSAtomStruct *)(((uintptr_t)v << 1) | 1); } /* Note: the string contents are uninitialized */ static JSString *js_alloc_string_rt(JSRuntime *rt, int max_len, int is_wide_char) { JSString *str; str = js_malloc_rt(rt, sizeof(JSString) + (max_len << is_wide_char) + 1 - is_wide_char); if (unlikely(!str)) return NULL; str->header.ref_count = 1; str->is_wide_char = is_wide_char; str->len = max_len; str->atom_type = 0; str->hash = 0; /* optional but costless */ str->hash_next = 0; /* optional */ #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_add_tail(&str->link, &rt->string_list); #endif return str; } static JSString *js_alloc_string(JSContext *ctx, int max_len, int is_wide_char) { JSString *p; p = js_alloc_string_rt(ctx->rt, max_len, is_wide_char); if (unlikely(!p)) { JS_ThrowOutOfMemory(ctx); return NULL; } return p; } /* same as JS_FreeValueRT() but faster */ static inline void js_free_string(JSRuntime *rt, JSString *str) { if (--str->header.ref_count <= 0) { if (str->atom_type) { JS_FreeAtomStruct(rt, str); } else { #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_del(&str->link); #endif js_free_rt(rt, str); } } } void JS_SetRuntimeInfo(JSRuntime *rt, const char *s) { if (rt) rt->rt_info = s; } void JS_FreeRuntime(JSRuntime *rt) { struct list_head *el, *el1; int i; rt->in_free = true; JS_FreeValueRT(rt, rt->current_exception); list_for_each_safe(el, el1, &rt->job_list) { JSJobEntry *e = list_entry(el, JSJobEntry, link); for(i = 0; i < e->argc; i++) JS_FreeValueRT(rt, e->argv[i]); js_free_rt(rt, e); } init_list_head(&rt->job_list); JS_RunGC(rt); #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS /* leaking objects */ if (check_dump_flag(rt, JS_DUMP_LEAKS)) { bool header_done; JSGCObjectHeader *p; int count; /* remove the internal refcounts to display only the object referenced externally */ list_for_each(el, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); p->mark = 0; } gc_decref(rt); header_done = false; list_for_each(el, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); if (p->ref_count != 0) { if (!header_done) { printf("Object leaks:\n"); JS_DumpObjectHeader(rt); header_done = true; } JS_DumpGCObject(rt, p); } } count = 0; list_for_each(el, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); if (p->ref_count == 0) { count++; } } if (count != 0) printf("Secondary object leaks: %d\n", count); } #endif assert(list_empty(&rt->gc_obj_list)); /* free the classes */ for(i = 0; i < rt->class_count; i++) { JSClass *cl = &rt->class_array[i]; if (cl->class_id != 0) { JS_FreeAtomRT(rt, cl->class_name); } } js_free_rt(rt, rt->class_array); bf_context_end(&rt->bf_ctx); #ifdef ENABLE_DUMPS // JS_DUMP_ATOM_LEAKS /* only the atoms defined in JS_InitAtoms() should be left */ if (check_dump_flag(rt, JS_DUMP_ATOM_LEAKS)) { bool header_done = false; for(i = 0; i < rt->atom_size; i++) { JSAtomStruct *p = rt->atom_array[i]; if (!atom_is_free(p) /* && p->str*/) { if (i >= JS_ATOM_END || p->header.ref_count != 1) { if (!header_done) { header_done = true; if (rt->rt_info) { printf("%s:1: atom leakage:", rt->rt_info); } else { printf("Atom leaks:\n" " %6s %6s %s\n", "ID", "REFCNT", "NAME"); } } if (rt->rt_info) { printf(" "); } else { printf(" %6u %6u ", i, p->header.ref_count); } switch (p->atom_type) { case JS_ATOM_TYPE_STRING: JS_DumpString(rt, p); break; case JS_ATOM_TYPE_GLOBAL_SYMBOL: printf("Symbol.for("); JS_DumpString(rt, p); printf(")"); break; case JS_ATOM_TYPE_SYMBOL: if (p->hash == JS_ATOM_HASH_SYMBOL) { printf("Symbol("); JS_DumpString(rt, p); printf(")"); } else { printf("Private("); JS_DumpString(rt, p); printf(")"); } break; } if (rt->rt_info) { printf(":%u", p->header.ref_count); } else { printf("\n"); } } } } if (rt->rt_info && header_done) printf("\n"); } #endif /* free the atoms */ for(i = 0; i < rt->atom_size; i++) { JSAtomStruct *p = rt->atom_array[i]; if (!atom_is_free(p)) { #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_del(&p->link); #endif js_free_rt(rt, p); } } js_free_rt(rt, rt->atom_array); js_free_rt(rt, rt->atom_hash); js_free_rt(rt, rt->shape_hash); #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS if (check_dump_flag(rt, JS_DUMP_LEAKS) && !list_empty(&rt->string_list)) { if (rt->rt_info) { printf("%s:1: string leakage:", rt->rt_info); } else { printf("String leaks:\n" " %6s %s\n", "REFCNT", "VALUE"); } list_for_each_safe(el, el1, &rt->string_list) { JSString *str = list_entry(el, JSString, link); if (rt->rt_info) { printf(" "); } else { printf(" %6u ", str->header.ref_count); } JS_DumpString(rt, str); if (rt->rt_info) { printf(":%u", str->header.ref_count); } else { printf("\n"); } list_del(&str->link); js_free_rt(rt, str); } if (rt->rt_info) printf("\n"); } #endif while (rt->finalizers) { JSRuntimeFinalizerState *fs = rt->finalizers; rt->finalizers = fs->next; fs->finalizer(rt, fs->arg); js_free_rt(rt, fs); } #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS if (check_dump_flag(rt, JS_DUMP_LEAKS)) { JSMallocState *s = &rt->malloc_state; if (s->malloc_count > 1) { if (rt->rt_info) printf("%s:1: ", rt->rt_info); printf("Memory leak: %zd bytes lost in %zd block%s\n", s->malloc_size - sizeof(JSRuntime), s->malloc_count - 1, &"s"[s->malloc_count == 2]); } } #endif { JSMallocState *ms = &rt->malloc_state; rt->mf.js_free(ms->opaque, rt); } } JSContext *JS_NewContextRaw(JSRuntime *rt) { JSContext *ctx; int i; ctx = js_mallocz_rt(rt, sizeof(JSContext)); if (!ctx) return NULL; ctx->header.ref_count = 1; add_gc_object(rt, &ctx->header, JS_GC_OBJ_TYPE_JS_CONTEXT); ctx->class_proto = js_malloc_rt(rt, sizeof(ctx->class_proto[0]) * rt->class_count); if (!ctx->class_proto) { js_free_rt(rt, ctx); return NULL; } ctx->rt = rt; list_add_tail(&ctx->link, &rt->context_list); ctx->bf_ctx = &rt->bf_ctx; for(i = 0; i < rt->class_count; i++) ctx->class_proto[i] = JS_NULL; ctx->array_ctor = JS_NULL; ctx->iterator_ctor = JS_NULL; ctx->regexp_ctor = JS_NULL; ctx->promise_ctor = JS_NULL; ctx->error_ctor = JS_NULL; ctx->error_back_trace = JS_UNDEFINED; ctx->error_prepare_stack = JS_UNDEFINED; ctx->error_stack_trace_limit = js_int32(10); init_list_head(&ctx->loaded_modules); JS_AddIntrinsicBasicObjects(ctx); return ctx; } JSContext *JS_NewContext(JSRuntime *rt) { JSContext *ctx; ctx = JS_NewContextRaw(rt); if (!ctx) return NULL; JS_AddIntrinsicBaseObjects(ctx); JS_AddIntrinsicDate(ctx); JS_AddIntrinsicEval(ctx); JS_AddIntrinsicRegExp(ctx); JS_AddIntrinsicJSON(ctx); JS_AddIntrinsicProxy(ctx); JS_AddIntrinsicMapSet(ctx); JS_AddIntrinsicTypedArrays(ctx); JS_AddIntrinsicPromise(ctx); JS_AddIntrinsicBigInt(ctx); JS_AddIntrinsicWeakRef(ctx); JS_AddPerformance(ctx); return ctx; } void *JS_GetContextOpaque(JSContext *ctx) { return ctx->user_opaque; } void JS_SetContextOpaque(JSContext *ctx, void *opaque) { ctx->user_opaque = opaque; } /* set the new value and free the old value after (freeing the value can reallocate the object data) */ static inline void set_value(JSContext *ctx, JSValue *pval, JSValue new_val) { JSValue old_val; old_val = *pval; *pval = new_val; JS_FreeValue(ctx, old_val); } void JS_SetClassProto(JSContext *ctx, JSClassID class_id, JSValue obj) { assert(class_id < ctx->rt->class_count); set_value(ctx, &ctx->class_proto[class_id], obj); } JSValue JS_GetClassProto(JSContext *ctx, JSClassID class_id) { assert(class_id < ctx->rt->class_count); return js_dup(ctx->class_proto[class_id]); } JSValue JS_GetFunctionProto(JSContext *ctx) { return js_dup(ctx->function_proto); } typedef enum JSFreeModuleEnum { JS_FREE_MODULE_ALL, JS_FREE_MODULE_NOT_RESOLVED, } JSFreeModuleEnum; /* XXX: would be more efficient with separate module lists */ static void js_free_modules(JSContext *ctx, JSFreeModuleEnum flag) { struct list_head *el, *el1; list_for_each_safe(el, el1, &ctx->loaded_modules) { JSModuleDef *m = list_entry(el, JSModuleDef, link); if (flag == JS_FREE_MODULE_ALL || (flag == JS_FREE_MODULE_NOT_RESOLVED && !m->resolved)) { js_free_module_def(ctx, m); } } } JSContext *JS_DupContext(JSContext *ctx) { ctx->header.ref_count++; return ctx; } /* used by the GC */ static void JS_MarkContext(JSRuntime *rt, JSContext *ctx, JS_MarkFunc *mark_func) { int i; struct list_head *el; /* modules are not seen by the GC, so we directly mark the objects referenced by each module */ list_for_each(el, &ctx->loaded_modules) { JSModuleDef *m = list_entry(el, JSModuleDef, link); js_mark_module_def(rt, m, mark_func); } JS_MarkValue(rt, ctx->global_obj, mark_func); JS_MarkValue(rt, ctx->global_var_obj, mark_func); JS_MarkValue(rt, ctx->throw_type_error, mark_func); JS_MarkValue(rt, ctx->eval_obj, mark_func); JS_MarkValue(rt, ctx->array_proto_values, mark_func); for(i = 0; i < JS_NATIVE_ERROR_COUNT; i++) { JS_MarkValue(rt, ctx->native_error_proto[i], mark_func); } JS_MarkValue(rt, ctx->error_ctor, mark_func); JS_MarkValue(rt, ctx->error_back_trace, mark_func); JS_MarkValue(rt, ctx->error_prepare_stack, mark_func); JS_MarkValue(rt, ctx->error_stack_trace_limit, mark_func); for(i = 0; i < rt->class_count; i++) { JS_MarkValue(rt, ctx->class_proto[i], mark_func); } JS_MarkValue(rt, ctx->iterator_ctor, mark_func); JS_MarkValue(rt, ctx->async_iterator_proto, mark_func); JS_MarkValue(rt, ctx->promise_ctor, mark_func); JS_MarkValue(rt, ctx->array_ctor, mark_func); JS_MarkValue(rt, ctx->regexp_ctor, mark_func); JS_MarkValue(rt, ctx->function_ctor, mark_func); JS_MarkValue(rt, ctx->function_proto, mark_func); if (ctx->array_shape) mark_func(rt, &ctx->array_shape->header); } void JS_FreeContext(JSContext *ctx) { JSRuntime *rt = ctx->rt; int i; if (--ctx->header.ref_count > 0) return; assert(ctx->header.ref_count == 0); #ifdef ENABLE_DUMPS // JS_DUMP_ATOMS if (check_dump_flag(rt, JS_DUMP_ATOMS)) JS_DumpAtoms(ctx->rt); #endif #ifdef ENABLE_DUMPS // JS_DUMP_SHAPES if (check_dump_flag(rt, JS_DUMP_SHAPES)) JS_DumpShapes(ctx->rt); #endif #ifdef ENABLE_DUMPS // JS_DUMP_OBJECTS if (check_dump_flag(rt, JS_DUMP_OBJECTS)) { struct list_head *el; JSGCObjectHeader *p; printf("JSObjects: {\n"); JS_DumpObjectHeader(ctx->rt); list_for_each(el, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); JS_DumpGCObject(rt, p); } printf("}\n"); } #endif #ifdef ENABLE_DUMPS // JS_DUMP_MEM if (check_dump_flag(rt, JS_DUMP_MEM)) { JSMemoryUsage stats; JS_ComputeMemoryUsage(rt, &stats); JS_DumpMemoryUsage(stdout, &stats, rt); } #endif js_free_modules(ctx, JS_FREE_MODULE_ALL); JS_FreeValue(ctx, ctx->global_obj); JS_FreeValue(ctx, ctx->global_var_obj); JS_FreeValue(ctx, ctx->throw_type_error); JS_FreeValue(ctx, ctx->eval_obj); JS_FreeValue(ctx, ctx->array_proto_values); for(i = 0; i < JS_NATIVE_ERROR_COUNT; i++) { JS_FreeValue(ctx, ctx->native_error_proto[i]); } JS_FreeValue(ctx, ctx->error_ctor); JS_FreeValue(ctx, ctx->error_back_trace); JS_FreeValue(ctx, ctx->error_prepare_stack); JS_FreeValue(ctx, ctx->error_stack_trace_limit); for(i = 0; i < rt->class_count; i++) { JS_FreeValue(ctx, ctx->class_proto[i]); } js_free_rt(rt, ctx->class_proto); JS_FreeValue(ctx, ctx->iterator_ctor); JS_FreeValue(ctx, ctx->async_iterator_proto); JS_FreeValue(ctx, ctx->promise_ctor); JS_FreeValue(ctx, ctx->array_ctor); JS_FreeValue(ctx, ctx->regexp_ctor); JS_FreeValue(ctx, ctx->function_ctor); JS_FreeValue(ctx, ctx->function_proto); js_free_shape_null(ctx->rt, ctx->array_shape); list_del(&ctx->link); remove_gc_object(&ctx->header); js_free_rt(ctx->rt, ctx); } JSRuntime *JS_GetRuntime(JSContext *ctx) { return ctx->rt; } static void update_stack_limit(JSRuntime *rt) { #if defined(__wasi__) rt->stack_limit = 0; /* no limit */ #else if (rt->stack_size == 0) { rt->stack_limit = 0; /* no limit */ } else { rt->stack_limit = rt->stack_top - rt->stack_size; } #endif } void JS_SetMaxStackSize(JSRuntime *rt, size_t stack_size) { rt->stack_size = stack_size; update_stack_limit(rt); } void JS_UpdateStackTop(JSRuntime *rt) { rt->stack_top = js_get_stack_pointer(); update_stack_limit(rt); } static inline bool is_strict_mode(JSContext *ctx) { JSStackFrame *sf = ctx->rt->current_stack_frame; return sf && sf->is_strict_mode; } /* JSAtom support */ #define JS_ATOM_TAG_INT (1U << 31) #define JS_ATOM_MAX_INT (JS_ATOM_TAG_INT - 1) #define JS_ATOM_MAX ((1U << 30) - 1) /* return the max count from the hash size */ #define JS_ATOM_COUNT_RESIZE(n) ((n) * 2) static inline bool __JS_AtomIsConst(JSAtom v) { return (int32_t)v < JS_ATOM_END; } static inline bool __JS_AtomIsTaggedInt(JSAtom v) { return (v & JS_ATOM_TAG_INT) != 0; } static inline JSAtom __JS_AtomFromUInt32(uint32_t v) { return v | JS_ATOM_TAG_INT; } static inline uint32_t __JS_AtomToUInt32(JSAtom atom) { return atom & ~JS_ATOM_TAG_INT; } static inline int is_num(int c) { return c >= '0' && c <= '9'; } /* return true if the string is a number n with 0 <= n <= 2^32-1 */ static inline bool is_num_string(uint32_t *pval, JSString *p) { uint32_t n; uint64_t n64; int c, i, len; len = p->len; if (len == 0 || len > 10) return false; c = string_get(p, 0); if (is_num(c)) { if (c == '0') { if (len != 1) return false; n = 0; } else { n = c - '0'; for(i = 1; i < len; i++) { c = string_get(p, i); if (!is_num(c)) return false; n64 = (uint64_t)n * 10 + (c - '0'); if ((n64 >> 32) != 0) return false; n = n64; } } *pval = n; return true; } else { return false; } } /* XXX: could use faster version ? */ static inline uint32_t hash_string8(const uint8_t *str, size_t len, uint32_t h) { size_t i; for(i = 0; i < len; i++) h = h * 263 + str[i]; return h; } static inline uint32_t hash_string16(const uint16_t *str, size_t len, uint32_t h) { size_t i; for(i = 0; i < len; i++) h = h * 263 + str[i]; return h; } static uint32_t hash_string(JSString *str, uint32_t h) { if (str->is_wide_char) h = hash_string16(str16(str), str->len, h); else h = hash_string8(str8(str), str->len, h); return h; } static __maybe_unused void JS_DumpString(JSRuntime *rt, JSString *p) { int i, c, sep; if (p == NULL) { printf(""); return; } if (p->header.ref_count != 1) printf("%d", p->header.ref_count); if (p->is_wide_char) putchar('L'); sep = '\"'; putchar(sep); for(i = 0; i < p->len; i++) { c = string_get(p, i); if (c == sep || c == '\\') { putchar('\\'); putchar(c); } else if (c >= ' ' && c <= 126) { putchar(c); } else if (c == '\n') { putchar('\\'); putchar('n'); } else { printf("\\u%04x", c); } } putchar(sep); } static __maybe_unused void JS_DumpAtoms(JSRuntime *rt) { JSAtomStruct *p; int h, i; /* This only dumps hashed atoms, not JS_ATOM_TYPE_SYMBOL atoms */ printf("JSAtom count=%d size=%d hash_size=%d:\n", rt->atom_count, rt->atom_size, rt->atom_hash_size); printf("JSAtom hash table: {\n"); for(i = 0; i < rt->atom_hash_size; i++) { h = rt->atom_hash[i]; if (h) { printf(" %d:", i); while (h) { p = rt->atom_array[h]; printf(" "); JS_DumpString(rt, p); h = p->hash_next; } printf("\n"); } } printf("}\n"); printf("JSAtom table: {\n"); for(i = 0; i < rt->atom_size; i++) { p = rt->atom_array[i]; if (!atom_is_free(p)) { printf(" %d: { %d %08x ", i, p->atom_type, p->hash); if (!(p->len == 0 && p->is_wide_char != 0)) JS_DumpString(rt, p); printf(" %d }\n", p->hash_next); } } printf("}\n"); } static int JS_ResizeAtomHash(JSRuntime *rt, int new_hash_size) { JSAtomStruct *p; uint32_t new_hash_mask, h, i, hash_next1, j, *new_hash; assert((new_hash_size & (new_hash_size - 1)) == 0); /* power of two */ new_hash_mask = new_hash_size - 1; new_hash = js_mallocz_rt(rt, sizeof(rt->atom_hash[0]) * new_hash_size); if (!new_hash) return -1; for(i = 0; i < rt->atom_hash_size; i++) { h = rt->atom_hash[i]; while (h != 0) { p = rt->atom_array[h]; hash_next1 = p->hash_next; /* add in new hash table */ j = p->hash & new_hash_mask; p->hash_next = new_hash[j]; new_hash[j] = h; h = hash_next1; } } js_free_rt(rt, rt->atom_hash); rt->atom_hash = new_hash; rt->atom_hash_size = new_hash_size; rt->atom_count_resize = JS_ATOM_COUNT_RESIZE(new_hash_size); // JS_DumpAtoms(rt); return 0; } static int JS_InitAtoms(JSRuntime *rt) { int i, len, atom_type; const char *p; rt->atom_hash_size = 0; rt->atom_hash = NULL; rt->atom_count = 0; rt->atom_size = 0; rt->atom_free_index = 0; if (JS_ResizeAtomHash(rt, 256)) /* there are at least 195 predefined atoms */ return -1; p = js_atom_init; for(i = 1; i < JS_ATOM_END; i++) { if (i == JS_ATOM_Private_brand) atom_type = JS_ATOM_TYPE_PRIVATE; else if (i >= JS_ATOM_Symbol_toPrimitive) atom_type = JS_ATOM_TYPE_SYMBOL; else atom_type = JS_ATOM_TYPE_STRING; len = strlen(p); if (__JS_NewAtomInit(rt, p, len, atom_type) == JS_ATOM_NULL) return -1; p = p + len + 1; } return 0; } static JSAtom JS_DupAtomRT(JSRuntime *rt, JSAtom v) { JSAtomStruct *p; if (!__JS_AtomIsConst(v)) { p = rt->atom_array[v]; p->header.ref_count++; } return v; } JSAtom JS_DupAtom(JSContext *ctx, JSAtom v) { JSRuntime *rt; JSAtomStruct *p; if (!__JS_AtomIsConst(v)) { rt = ctx->rt; p = rt->atom_array[v]; p->header.ref_count++; } return v; } static JSAtomKindEnum JS_AtomGetKind(JSContext *ctx, JSAtom v) { JSRuntime *rt; JSAtomStruct *p; rt = ctx->rt; if (__JS_AtomIsTaggedInt(v)) return JS_ATOM_KIND_STRING; p = rt->atom_array[v]; switch(p->atom_type) { case JS_ATOM_TYPE_STRING: return JS_ATOM_KIND_STRING; case JS_ATOM_TYPE_GLOBAL_SYMBOL: return JS_ATOM_KIND_SYMBOL; case JS_ATOM_TYPE_SYMBOL: switch(p->hash) { case JS_ATOM_HASH_SYMBOL: return JS_ATOM_KIND_SYMBOL; case JS_ATOM_HASH_PRIVATE: return JS_ATOM_KIND_PRIVATE; default: abort(); } default: abort(); } return (JSAtomKindEnum){-1}; // pacify compiler } static JSAtom js_get_atom_index(JSRuntime *rt, JSAtomStruct *p) { uint32_t i = p->hash_next; /* atom_index */ if (p->atom_type != JS_ATOM_TYPE_SYMBOL) { JSAtomStruct *p1; i = rt->atom_hash[p->hash & (rt->atom_hash_size - 1)]; p1 = rt->atom_array[i]; while (p1 != p) { assert(i != 0); i = p1->hash_next; p1 = rt->atom_array[i]; } } return i; } /* string case (internal). Return JS_ATOM_NULL if error. 'str' is freed. */ static JSAtom __JS_NewAtom(JSRuntime *rt, JSString *str, int atom_type) { uint32_t h, h1, i; JSAtomStruct *p; int len; if (atom_type < JS_ATOM_TYPE_SYMBOL) { /* str is not NULL */ if (str->atom_type == atom_type) { /* str is the atom, return its index */ i = js_get_atom_index(rt, str); /* reduce string refcount and increase atom's unless constant */ if (__JS_AtomIsConst(i)) str->header.ref_count--; return i; } /* try and locate an already registered atom */ len = str->len; h = hash_string(str, atom_type); h &= JS_ATOM_HASH_MASK; h1 = h & (rt->atom_hash_size - 1); i = rt->atom_hash[h1]; while (i != 0) { p = rt->atom_array[i]; if (p->hash == h && p->atom_type == atom_type && p->len == len && js_string_memcmp(p, str, len) == 0) { if (!__JS_AtomIsConst(i)) p->header.ref_count++; goto done; } i = p->hash_next; } } else { h1 = 0; /* avoid warning */ if (atom_type == JS_ATOM_TYPE_SYMBOL) { h = JS_ATOM_HASH_SYMBOL; } else { h = JS_ATOM_HASH_PRIVATE; atom_type = JS_ATOM_TYPE_SYMBOL; } } if (rt->atom_free_index == 0) { /* allow new atom entries */ uint32_t new_size, start; JSAtomStruct **new_array; /* alloc new with size progression 3/2: 4 6 9 13 19 28 42 63 94 141 211 316 474 711 1066 1599 2398 3597 5395 8092 preallocating space for predefined atoms (at least 195). */ new_size = max_int(211, rt->atom_size * 3 / 2); if (new_size > JS_ATOM_MAX) goto fail; /* XXX: should use realloc2 to use slack space */ new_array = js_realloc_rt(rt, rt->atom_array, sizeof(*new_array) * new_size); if (!new_array) goto fail; /* Note: the atom 0 is not used */ start = rt->atom_size; if (start == 0) { /* JS_ATOM_NULL entry */ p = js_mallocz_rt(rt, sizeof(JSAtomStruct)); if (!p) { js_free_rt(rt, new_array); goto fail; } p->header.ref_count = 1; /* not refcounted */ p->atom_type = JS_ATOM_TYPE_SYMBOL; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_add_tail(&p->link, &rt->string_list); #endif new_array[0] = p; rt->atom_count++; start = 1; } rt->atom_size = new_size; rt->atom_array = new_array; rt->atom_free_index = start; for(i = start; i < new_size; i++) { uint32_t next; if (i == (new_size - 1)) next = 0; else next = i + 1; rt->atom_array[i] = atom_set_free(next); } } if (str) { if (str->atom_type == 0) { p = str; p->atom_type = atom_type; } else { p = js_malloc_rt(rt, sizeof(JSString) + (str->len << str->is_wide_char) + 1 - str->is_wide_char); if (unlikely(!p)) goto fail; p->header.ref_count = 1; p->is_wide_char = str->is_wide_char; p->len = str->len; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_add_tail(&p->link, &rt->string_list); #endif memcpy(str8(p), str8(str), (str->len << str->is_wide_char) + 1 - str->is_wide_char); js_free_string(rt, str); } } else { p = js_malloc_rt(rt, sizeof(JSAtomStruct)); /* empty wide string */ if (!p) return JS_ATOM_NULL; p->header.ref_count = 1; p->is_wide_char = 1; /* Hack to represent NULL as a JSString */ p->len = 0; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_add_tail(&p->link, &rt->string_list); #endif } /* use an already free entry */ i = rt->atom_free_index; rt->atom_free_index = atom_get_free(rt->atom_array[i]); rt->atom_array[i] = p; p->hash = h; p->hash_next = i; /* atom_index */ p->atom_type = atom_type; p->first_weak_ref = NULL; rt->atom_count++; if (atom_type != JS_ATOM_TYPE_SYMBOL) { p->hash_next = rt->atom_hash[h1]; rt->atom_hash[h1] = i; if (unlikely(rt->atom_count >= rt->atom_count_resize)) JS_ResizeAtomHash(rt, rt->atom_hash_size * 2); } // JS_DumpAtoms(rt); return i; fail: i = JS_ATOM_NULL; done: if (str) js_free_string(rt, str); return i; } // XXX: `str` must be pure ASCII. No UTF-8 encoded strings // XXX: `str` must not be the string representation of a small integer static JSAtom __JS_NewAtomInit(JSRuntime *rt, const char *str, int len, int atom_type) { JSString *p; p = js_alloc_string_rt(rt, len, 0); if (!p) return JS_ATOM_NULL; memcpy(str8(p), str, len); str8(p)[len] = '\0'; return __JS_NewAtom(rt, p, atom_type); } // XXX: `str` must be raw 8-bit contents. No UTF-8 encoded strings static JSAtom __JS_FindAtom(JSRuntime *rt, const char *str, size_t len, int atom_type) { uint32_t h, h1, i; JSAtomStruct *p; h = hash_string8((const uint8_t *)str, len, JS_ATOM_TYPE_STRING); h &= JS_ATOM_HASH_MASK; h1 = h & (rt->atom_hash_size - 1); i = rt->atom_hash[h1]; while (i != 0) { p = rt->atom_array[i]; if (p->hash == h && p->atom_type == JS_ATOM_TYPE_STRING && p->len == len && p->is_wide_char == 0 && memcmp(str8(p), str, len) == 0) { if (!__JS_AtomIsConst(i)) p->header.ref_count++; return i; } i = p->hash_next; } return JS_ATOM_NULL; } static void JS_FreeAtomStruct(JSRuntime *rt, JSAtomStruct *p) { uint32_t i = p->hash_next; /* atom_index */ if (p->atom_type != JS_ATOM_TYPE_SYMBOL) { JSAtomStruct *p0, *p1; uint32_t h0; h0 = p->hash & (rt->atom_hash_size - 1); i = rt->atom_hash[h0]; p1 = rt->atom_array[i]; if (p1 == p) { rt->atom_hash[h0] = p1->hash_next; } else { for(;;) { assert(i != 0); p0 = p1; i = p1->hash_next; p1 = rt->atom_array[i]; if (p1 == p) { p0->hash_next = p1->hash_next; break; } } } } /* insert in free atom list */ rt->atom_array[i] = atom_set_free(rt->atom_free_index); rt->atom_free_index = i; if (unlikely(p->first_weak_ref)) { reset_weak_ref(rt, &p->first_weak_ref); } /* free the string structure */ #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_del(&p->link); #endif js_free_rt(rt, p); rt->atom_count--; assert(rt->atom_count >= 0); } static void __JS_FreeAtom(JSRuntime *rt, uint32_t i) { JSAtomStruct *p; p = rt->atom_array[i]; if (--p->header.ref_count > 0) return; JS_FreeAtomStruct(rt, p); } /* Warning: 'p' is freed */ static JSAtom JS_NewAtomStr(JSContext *ctx, JSString *p) { JSRuntime *rt = ctx->rt; uint32_t n; if (is_num_string(&n, p)) { if (n <= JS_ATOM_MAX_INT) { js_free_string(rt, p); return __JS_AtomFromUInt32(n); } } /* XXX: should generate an exception */ return __JS_NewAtom(rt, p, JS_ATOM_TYPE_STRING); } /* `str` may be pure ASCII or UTF-8 encoded */ JSAtom JS_NewAtomLen(JSContext *ctx, const char *str, size_t len) { JSValue val; if (len == 0 || !is_digit(*str)) { // TODO(chqrlie): this does not work if `str` has UTF-8 encoded contents // bug example: `({ "\u00c3\u00a9": 1 }).\u00e9` evaluates to `1`. JSAtom atom = __JS_FindAtom(ctx->rt, str, len, JS_ATOM_TYPE_STRING); if (atom) return atom; } val = JS_NewStringLen(ctx, str, len); if (JS_IsException(val)) return JS_ATOM_NULL; return JS_NewAtomStr(ctx, JS_VALUE_GET_STRING(val)); } /* `str` may be pure ASCII or UTF-8 encoded */ JSAtom JS_NewAtom(JSContext *ctx, const char *str) { return JS_NewAtomLen(ctx, str, strlen(str)); } JSAtom JS_NewAtomUInt32(JSContext *ctx, uint32_t n) { if (n <= JS_ATOM_MAX_INT) { return __JS_AtomFromUInt32(n); } else { char buf[16]; size_t len = u32toa(buf, n); JSValue val = js_new_string8_len(ctx, buf, len); if (JS_IsException(val)) return JS_ATOM_NULL; return __JS_NewAtom(ctx->rt, JS_VALUE_GET_STRING(val), JS_ATOM_TYPE_STRING); } } static JSAtom JS_NewAtomInt64(JSContext *ctx, int64_t n) { if ((uint64_t)n <= JS_ATOM_MAX_INT) { return __JS_AtomFromUInt32((uint32_t)n); } else { char buf[24]; size_t len = i64toa(buf, n); JSValue val = js_new_string8_len(ctx, buf, len); if (JS_IsException(val)) return JS_ATOM_NULL; return __JS_NewAtom(ctx->rt, JS_VALUE_GET_STRING(val), JS_ATOM_TYPE_STRING); } } /* 'p' is freed */ static JSValue JS_NewSymbolInternal(JSContext *ctx, JSString *p, int atom_type) { JSRuntime *rt = ctx->rt; JSAtom atom; atom = __JS_NewAtom(rt, p, atom_type); if (atom == JS_ATOM_NULL) return JS_ThrowOutOfMemory(ctx); return JS_MKPTR(JS_TAG_SYMBOL, rt->atom_array[atom]); } /* descr must be a non-numeric string atom */ static JSValue JS_NewSymbolFromAtom(JSContext *ctx, JSAtom descr, int atom_type) { JSRuntime *rt = ctx->rt; JSString *p; assert(!__JS_AtomIsTaggedInt(descr)); assert(descr < rt->atom_size); p = rt->atom_array[descr]; js_dup(JS_MKPTR(JS_TAG_STRING, p)); return JS_NewSymbolInternal(ctx, p, atom_type); } /* `description` may be pure ASCII or UTF-8 encoded */ JSValue JS_NewSymbol(JSContext *ctx, const char *description, bool is_global) { JSAtom atom = JS_NewAtom(ctx, description); if (atom == JS_ATOM_NULL) return JS_EXCEPTION; return JS_NewSymbolFromAtom(ctx, atom, is_global ? JS_ATOM_TYPE_GLOBAL_SYMBOL : JS_ATOM_TYPE_SYMBOL); } #define ATOM_GET_STR_BUF_SIZE 64 static const char *JS_AtomGetStrRT(JSRuntime *rt, char *buf, int buf_size, JSAtom atom) { if (__JS_AtomIsTaggedInt(atom)) { snprintf(buf, buf_size, "%u", __JS_AtomToUInt32(atom)); } else if (atom == JS_ATOM_NULL) { snprintf(buf, buf_size, ""); } else if (atom >= rt->atom_size) { assert(atom < rt->atom_size); snprintf(buf, buf_size, "", atom); } else { JSAtomStruct *p = rt->atom_array[atom]; *buf = '\0'; if (atom_is_free(p)) { assert(!atom_is_free(p)); snprintf(buf, buf_size, "", atom); } else if (p != NULL) { JSString *str = p; if (str->is_wide_char) { /* encode surrogates correctly */ utf8_encode_buf16(buf, buf_size, str16(str), str->len); } else { utf8_encode_buf8(buf, buf_size, str8(str), str->len); } } } return buf; } static const char *JS_AtomGetStr(JSContext *ctx, char *buf, int buf_size, JSAtom atom) { return JS_AtomGetStrRT(ctx->rt, buf, buf_size, atom); } static JSValue __JS_AtomToValue(JSContext *ctx, JSAtom atom, bool force_string) { char buf[ATOM_GET_STR_BUF_SIZE]; if (__JS_AtomIsTaggedInt(atom)) { size_t len = u32toa(buf, __JS_AtomToUInt32(atom)); return js_new_string8_len(ctx, buf, len); } else { JSRuntime *rt = ctx->rt; JSAtomStruct *p; assert(atom < rt->atom_size); p = rt->atom_array[atom]; if (p->atom_type == JS_ATOM_TYPE_STRING) { goto ret_string; } else if (force_string) { if (p->len == 0 && p->is_wide_char != 0) { /* no description string */ p = rt->atom_array[JS_ATOM_empty_string]; } ret_string: return js_dup(JS_MKPTR(JS_TAG_STRING, p)); } else { return js_dup(JS_MKPTR(JS_TAG_SYMBOL, p)); } } } JSValue JS_AtomToValue(JSContext *ctx, JSAtom atom) { return __JS_AtomToValue(ctx, atom, false); } JSValue JS_AtomToString(JSContext *ctx, JSAtom atom) { return __JS_AtomToValue(ctx, atom, true); } /* return true if the atom is an array index (i.e. 0 <= index <= 2^32-2 and return its value */ static bool JS_AtomIsArrayIndex(JSContext *ctx, uint32_t *pval, JSAtom atom) { if (__JS_AtomIsTaggedInt(atom)) { *pval = __JS_AtomToUInt32(atom); return true; } else { JSRuntime *rt = ctx->rt; JSAtomStruct *p; uint32_t val; assert(atom < rt->atom_size); p = rt->atom_array[atom]; if (p->atom_type == JS_ATOM_TYPE_STRING && is_num_string(&val, p) && val != -1) { *pval = val; return true; } else { *pval = 0; return false; } } } /* This test must be fast if atom is not a numeric index (e.g. a method name). Return JS_UNDEFINED if not a numeric index. JS_EXCEPTION can also be returned. */ static JSValue JS_AtomIsNumericIndex1(JSContext *ctx, JSAtom atom) { JSRuntime *rt = ctx->rt; JSAtomStruct *p1; JSString *p; int c, len, ret; JSValue num, str; if (__JS_AtomIsTaggedInt(atom)) return js_int32(__JS_AtomToUInt32(atom)); assert(atom < rt->atom_size); p1 = rt->atom_array[atom]; if (p1->atom_type != JS_ATOM_TYPE_STRING) return JS_UNDEFINED; p = p1; len = p->len; if (p->is_wide_char) { const uint16_t *r = str16(p), *r_end = str16(p) + len; if (r >= r_end) return JS_UNDEFINED; c = *r; if (c == '-') { if (r >= r_end) return JS_UNDEFINED; r++; c = *r; /* -0 case is specific */ if (c == '0' && len == 2) goto minus_zero; } /* XXX: should test NaN, but the tests do not check it */ if (!is_num(c)) { /* XXX: String should be normalized, therefore 8-bit only */ const uint16_t nfinity16[7] = { 'n', 'f', 'i', 'n', 'i', 't', 'y' }; if (!(c =='I' && (r_end - r) == 8 && !memcmp(r + 1, nfinity16, sizeof(nfinity16)))) return JS_UNDEFINED; } } else { const uint8_t *r = str8(p), *r_end = str8(p) + len; if (r >= r_end) return JS_UNDEFINED; c = *r; if (c == '-') { if (r >= r_end) return JS_UNDEFINED; r++; c = *r; /* -0 case is specific */ if (c == '0' && len == 2) { minus_zero: return js_float64(-0.0); } } if (!is_num(c)) { if (!(c =='I' && (r_end - r) == 8 && !memcmp(r + 1, "nfinity", 7))) return JS_UNDEFINED; } } /* this is ECMA CanonicalNumericIndexString primitive */ num = JS_ToNumber(ctx, JS_MKPTR(JS_TAG_STRING, p)); if (JS_IsException(num)) return num; str = JS_ToString(ctx, num); if (JS_IsException(str)) { JS_FreeValue(ctx, num); return str; } ret = js_string_eq(p, JS_VALUE_GET_STRING(str)); JS_FreeValue(ctx, str); if (ret) { return num; } else { JS_FreeValue(ctx, num); return JS_UNDEFINED; } } /* return -1 if exception or true/false */ static int JS_AtomIsNumericIndex(JSContext *ctx, JSAtom atom) { JSValue num; num = JS_AtomIsNumericIndex1(ctx, atom); if (likely(JS_IsUndefined(num))) return false; if (JS_IsException(num)) return -1; JS_FreeValue(ctx, num); return true; } void JS_FreeAtom(JSContext *ctx, JSAtom v) { if (!__JS_AtomIsConst(v)) __JS_FreeAtom(ctx->rt, v); } void JS_FreeAtomRT(JSRuntime *rt, JSAtom v) { if (!__JS_AtomIsConst(v)) __JS_FreeAtom(rt, v); } /* return true if 'v' is a symbol with a string description */ static bool JS_AtomSymbolHasDescription(JSContext *ctx, JSAtom v) { JSRuntime *rt; JSAtomStruct *p; rt = ctx->rt; if (__JS_AtomIsTaggedInt(v)) return false; p = rt->atom_array[v]; return (((p->atom_type == JS_ATOM_TYPE_SYMBOL && p->hash == JS_ATOM_HASH_SYMBOL) || p->atom_type == JS_ATOM_TYPE_GLOBAL_SYMBOL) && !(p->len == 0 && p->is_wide_char != 0)); } static __maybe_unused void print_atom(JSContext *ctx, JSAtom atom) { char buf[ATOM_GET_STR_BUF_SIZE]; const char *p; int i; /* XXX: should handle embedded null characters */ /* XXX: should move encoding code to JS_AtomGetStr */ p = JS_AtomGetStr(ctx, buf, sizeof(buf), atom); for (i = 0; p[i]; i++) { int c = (unsigned char)p[i]; if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c == '_' || c == '$') || (c >= '0' && c <= '9' && i > 0))) break; } if (i > 0 && p[i] == '\0') { printf("%s", p); } else { putchar('"'); printf("%.*s", i, p); for (; p[i]; i++) { int c = (unsigned char)p[i]; if (c == '\"' || c == '\\') { putchar('\\'); putchar(c); } else if (c >= ' ' && c <= 126) { putchar(c); } else if (c == '\n') { putchar('\\'); putchar('n'); } else { printf("\\u%04x", c); } } putchar('\"'); } } /* free with JS_FreeCString() */ const char *JS_AtomToCString(JSContext *ctx, JSAtom atom) { JSValue str; const char *cstr; str = JS_AtomToString(ctx, atom); if (JS_IsException(str)) return NULL; cstr = JS_ToCString(ctx, str); JS_FreeValue(ctx, str); return cstr; } /* return a string atom containing name concatenated with str1 */ /* `str1` may be pure ASCII or UTF-8 encoded */ // TODO(chqrlie): use string concatenation instead of UTF-8 conversion static JSAtom js_atom_concat_str(JSContext *ctx, JSAtom name, const char *str1) { JSValue str; JSAtom atom; const char *cstr; char *cstr2; size_t len, len1; str = JS_AtomToString(ctx, name); if (JS_IsException(str)) return JS_ATOM_NULL; cstr = JS_ToCStringLen(ctx, &len, str); if (!cstr) goto fail; len1 = strlen(str1); cstr2 = js_malloc(ctx, len + len1 + 1); if (!cstr2) goto fail; memcpy(cstr2, cstr, len); memcpy(cstr2 + len, str1, len1); cstr2[len + len1] = '\0'; atom = JS_NewAtomLen(ctx, cstr2, len + len1); js_free(ctx, cstr2); JS_FreeCString(ctx, cstr); JS_FreeValue(ctx, str); return atom; fail: JS_FreeCString(ctx, cstr); JS_FreeValue(ctx, str); return JS_ATOM_NULL; } static JSAtom js_atom_concat_num(JSContext *ctx, JSAtom name, uint32_t n) { char buf[16]; u32toa(buf, n); return js_atom_concat_str(ctx, name, buf); } static inline bool JS_IsEmptyString(JSValueConst v) { return JS_VALUE_GET_TAG(v) == JS_TAG_STRING && JS_VALUE_GET_STRING(v)->len == 0; } /* JSClass support */ /* a new class ID is allocated if *pclass_id == 0, otherwise *pclass_id is left unchanged */ JSClassID JS_NewClassID(JSRuntime *rt, JSClassID *pclass_id) { JSClassID class_id = *pclass_id; if (class_id == 0) { class_id = rt->js_class_id_alloc++; *pclass_id = class_id; } return class_id; } JSClassID JS_GetClassID(JSValueConst v) { JSObject *p; if (JS_VALUE_GET_TAG(v) != JS_TAG_OBJECT) return JS_INVALID_CLASS_ID; p = JS_VALUE_GET_OBJ(v); return p->class_id; } bool JS_IsRegisteredClass(JSRuntime *rt, JSClassID class_id) { return (class_id < rt->class_count && rt->class_array[class_id].class_id != 0); } /* create a new object internal class. Return -1 if error, 0 if OK. The finalizer can be NULL if none is needed. */ static int JS_NewClass1(JSRuntime *rt, JSClassID class_id, const JSClassDef *class_def, JSAtom name) { int new_size, i; JSClass *cl, *new_class_array; struct list_head *el; if (class_id >= (1 << 16)) return -1; if (class_id < rt->class_count && rt->class_array[class_id].class_id != 0) return -1; if (class_id >= rt->class_count) { new_size = max_int(JS_CLASS_INIT_COUNT, max_int(class_id + 1, rt->class_count * 3 / 2)); /* reallocate the context class prototype array, if any */ list_for_each(el, &rt->context_list) { JSContext *ctx = list_entry(el, JSContext, link); JSValue *new_tab; new_tab = js_realloc_rt(rt, ctx->class_proto, sizeof(ctx->class_proto[0]) * new_size); if (!new_tab) return -1; for(i = rt->class_count; i < new_size; i++) new_tab[i] = JS_NULL; ctx->class_proto = new_tab; } /* reallocate the class array */ new_class_array = js_realloc_rt(rt, rt->class_array, sizeof(JSClass) * new_size); if (!new_class_array) return -1; memset(new_class_array + rt->class_count, 0, (new_size - rt->class_count) * sizeof(JSClass)); rt->class_array = new_class_array; rt->class_count = new_size; } cl = &rt->class_array[class_id]; cl->class_id = class_id; cl->class_name = JS_DupAtomRT(rt, name); cl->finalizer = class_def->finalizer; cl->gc_mark = class_def->gc_mark; cl->call = class_def->call; cl->exotic = class_def->exotic; return 0; } int JS_NewClass(JSRuntime *rt, JSClassID class_id, const JSClassDef *class_def) { int ret, len; JSAtom name; // XXX: class_def->class_name must be raw 8-bit contents. No UTF-8 encoded strings len = strlen(class_def->class_name); name = __JS_FindAtom(rt, class_def->class_name, len, JS_ATOM_TYPE_STRING); if (name == JS_ATOM_NULL) { name = __JS_NewAtomInit(rt, class_def->class_name, len, JS_ATOM_TYPE_STRING); if (name == JS_ATOM_NULL) return -1; } ret = JS_NewClass1(rt, class_id, class_def, name); JS_FreeAtomRT(rt, name); return ret; } // XXX: `buf` contains raw 8-bit data, no UTF-8 decoding is performed // XXX: no special case for len == 0 static JSValue js_new_string8_len(JSContext *ctx, const char *buf, int len) { JSString *str; str = js_alloc_string(ctx, len, 0); if (!str) return JS_EXCEPTION; memcpy(str8(str), buf, len); str8(str)[len] = '\0'; return JS_MKPTR(JS_TAG_STRING, str); } // XXX: `buf` contains raw 8-bit data, no UTF-8 decoding is performed // XXX: no special case for the empty string static inline JSValue js_new_string8(JSContext *ctx, const char *str) { return js_new_string8_len(ctx, str, strlen(str)); } static JSValue js_new_string16_len(JSContext *ctx, const uint16_t *buf, int len) { JSString *str; str = js_alloc_string(ctx, len, 1); if (!str) return JS_EXCEPTION; memcpy(str16(str), buf, len * 2); return JS_MKPTR(JS_TAG_STRING, str); } static JSValue js_new_string_char(JSContext *ctx, uint16_t c) { if (c < 0x100) { char ch8 = c; return js_new_string8_len(ctx, &ch8, 1); } else { uint16_t ch16 = c; return js_new_string16_len(ctx, &ch16, 1); } } static JSValue js_sub_string(JSContext *ctx, JSString *p, int start, int end) { int len = end - start; if (start == 0 && end == p->len) { return js_dup(JS_MKPTR(JS_TAG_STRING, p)); } if (len <= 0) { return JS_AtomToString(ctx, JS_ATOM_empty_string); } if (p->is_wide_char) { JSString *str; int i; uint16_t c = 0; for (i = start; i < end; i++) { c |= str16(p)[i]; } if (c > 0xFF) return js_new_string16_len(ctx, str16(p) + start, len); str = js_alloc_string(ctx, len, 0); if (!str) return JS_EXCEPTION; for (i = 0; i < len; i++) { str8(str)[i] = str16(p)[start + i]; } str8(str)[len] = '\0'; return JS_MKPTR(JS_TAG_STRING, str); } else { return js_new_string8_len(ctx, (const char *)(str8(p) + start), len); } } typedef struct StringBuffer { JSContext *ctx; JSString *str; int len; int size; int is_wide_char; int error_status; } StringBuffer; /* It is valid to call string_buffer_end() and all string_buffer functions even if string_buffer_init() or another string_buffer function returns an error. If the error_status is set, string_buffer_end() returns JS_EXCEPTION. */ static int string_buffer_init2(JSContext *ctx, StringBuffer *s, int size, int is_wide) { s->ctx = ctx; s->size = size; s->len = 0; s->is_wide_char = is_wide; s->error_status = 0; s->str = js_alloc_string(ctx, size, is_wide); if (unlikely(!s->str)) { s->size = 0; return s->error_status = -1; } #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS /* the StringBuffer may reallocate the JSString, only link it at the end */ list_del(&s->str->link); #endif return 0; } static inline int string_buffer_init(JSContext *ctx, StringBuffer *s, int size) { return string_buffer_init2(ctx, s, size, 0); } static void string_buffer_free(StringBuffer *s) { js_free(s->ctx, s->str); s->str = NULL; } static int string_buffer_set_error(StringBuffer *s) { js_free(s->ctx, s->str); s->str = NULL; s->size = 0; s->len = 0; return s->error_status = -1; } static no_inline int string_buffer_widen(StringBuffer *s, int size) { JSString *str; size_t slack; int i; if (s->error_status) return -1; str = js_realloc2(s->ctx, s->str, sizeof(JSString) + (size << 1), &slack); if (!str) return string_buffer_set_error(s); size += slack >> 1; for(i = s->len; i-- > 0;) { str16(str)[i] = str8(str)[i]; } s->is_wide_char = 1; s->size = size; s->str = str; return 0; } static no_inline int string_buffer_realloc(StringBuffer *s, int new_len, int c) { JSString *new_str; int new_size; size_t new_size_bytes, slack; if (s->error_status) return -1; if (new_len > JS_STRING_LEN_MAX) { JS_ThrowRangeError(s->ctx, "invalid string length"); return string_buffer_set_error(s); } new_size = min_int(max_int(new_len, s->size * 3 / 2), JS_STRING_LEN_MAX); if (!s->is_wide_char && c >= 0x100) { return string_buffer_widen(s, new_size); } new_size_bytes = sizeof(JSString) + (new_size << s->is_wide_char) + 1 - s->is_wide_char; new_str = js_realloc2(s->ctx, s->str, new_size_bytes, &slack); if (!new_str) return string_buffer_set_error(s); new_size = min_int(new_size + (slack >> s->is_wide_char), JS_STRING_LEN_MAX); s->size = new_size; s->str = new_str; return 0; } static no_inline int string_buffer_putc_slow(StringBuffer *s, uint32_t c) { if (unlikely(s->len >= s->size)) { if (string_buffer_realloc(s, s->len + 1, c)) return -1; } if (s->is_wide_char) { str16(s->str)[s->len++] = c; } else if (c < 0x100) { str8(s->str)[s->len++] = c; } else { if (string_buffer_widen(s, s->size)) return -1; str16(s->str)[s->len++] = c; } return 0; } /* 0 <= c <= 0xff */ static int string_buffer_putc8(StringBuffer *s, uint32_t c) { if (unlikely(s->len >= s->size)) { if (string_buffer_realloc(s, s->len + 1, c)) return -1; } if (s->is_wide_char) { str16(s->str)[s->len++] = c; } else { str8(s->str)[s->len++] = c; } return 0; } /* 0 <= c <= 0xffff */ static int string_buffer_putc16(StringBuffer *s, uint32_t c) { if (likely(s->len < s->size)) { if (s->is_wide_char) { str16(s->str)[s->len++] = c; return 0; } else if (c < 0x100) { str8(s->str)[s->len++] = c; return 0; } } return string_buffer_putc_slow(s, c); } /* 0 <= c <= 0x10ffff */ static int string_buffer_putc(StringBuffer *s, uint32_t c) { if (unlikely(c >= 0x10000)) { /* surrogate pair */ if (string_buffer_putc16(s, get_hi_surrogate(c))) return -1; c = get_lo_surrogate(c); } return string_buffer_putc16(s, c); } static int string_getc(JSString *p, int *pidx) { int idx, c, c1; idx = *pidx; if (p->is_wide_char) { c = str16(p)[idx++]; if (is_hi_surrogate(c) && idx < p->len) { c1 = str16(p)[idx]; if (is_lo_surrogate(c1)) { c = from_surrogate(c, c1); idx++; } } } else { c = str8(p)[idx++]; } *pidx = idx; return c; } static int string_buffer_write8(StringBuffer *s, const uint8_t *p, int len) { int i; if (s->len + len > s->size) { if (string_buffer_realloc(s, s->len + len, 0)) return -1; } if (s->is_wide_char) { for (i = 0; i < len; i++) { str16(s->str)[s->len + i] = p[i]; } s->len += len; } else { memcpy(&str8(s->str)[s->len], p, len); s->len += len; } return 0; } static int string_buffer_write16(StringBuffer *s, const uint16_t *p, int len) { int c = 0, i; for (i = 0; i < len; i++) { c |= p[i]; } if (s->len + len > s->size) { if (string_buffer_realloc(s, s->len + len, c)) return -1; } else if (!s->is_wide_char && c >= 0x100) { if (string_buffer_widen(s, s->size)) return -1; } if (s->is_wide_char) { memcpy(&str16(s->str)[s->len], p, len << 1); s->len += len; } else { for (i = 0; i < len; i++) { str8(s->str)[s->len + i] = p[i]; } s->len += len; } return 0; } /* appending an ASCII string */ static int string_buffer_puts8(StringBuffer *s, const char *str) { return string_buffer_write8(s, (const uint8_t *)str, strlen(str)); } static int string_buffer_concat(StringBuffer *s, JSString *p, uint32_t from, uint32_t to) { if (to <= from) return 0; if (p->is_wide_char) return string_buffer_write16(s, str16(p) + from, to - from); else return string_buffer_write8(s, str8(p) + from, to - from); } static int string_buffer_concat_value(StringBuffer *s, JSValueConst v) { JSString *p; JSValue v1; int res; if (s->error_status) { /* prevent exception overload */ return -1; } if (unlikely(JS_VALUE_GET_TAG(v) != JS_TAG_STRING)) { v1 = JS_ToString(s->ctx, v); if (JS_IsException(v1)) return string_buffer_set_error(s); p = JS_VALUE_GET_STRING(v1); res = string_buffer_concat(s, p, 0, p->len); JS_FreeValue(s->ctx, v1); return res; } p = JS_VALUE_GET_STRING(v); return string_buffer_concat(s, p, 0, p->len); } static int string_buffer_concat_value_free(StringBuffer *s, JSValue v) { JSString *p; int res; if (s->error_status) { /* prevent exception overload */ JS_FreeValue(s->ctx, v); return -1; } if (unlikely(JS_VALUE_GET_TAG(v) != JS_TAG_STRING)) { v = JS_ToStringFree(s->ctx, v); if (JS_IsException(v)) return string_buffer_set_error(s); } p = JS_VALUE_GET_STRING(v); res = string_buffer_concat(s, p, 0, p->len); JS_FreeValue(s->ctx, v); return res; } static int string_buffer_fill(StringBuffer *s, int c, int count) { /* XXX: optimize */ if (s->len + count > s->size) { if (string_buffer_realloc(s, s->len + count, c)) return -1; } while (count-- > 0) { if (string_buffer_putc16(s, c)) return -1; } return 0; } static JSValue string_buffer_end(StringBuffer *s) { JSString *str; str = s->str; if (s->error_status) return JS_EXCEPTION; if (s->len == 0) { js_free(s->ctx, str); s->str = NULL; return JS_AtomToString(s->ctx, JS_ATOM_empty_string); } if (s->len < s->size) { /* smaller size so js_realloc should not fail, but OK if it does */ /* XXX: should add some slack to avoid unnecessary calls */ /* XXX: might need to use malloc+free to ensure smaller size */ str = js_realloc_rt(s->ctx->rt, str, sizeof(JSString) + (s->len << s->is_wide_char) + 1 - s->is_wide_char); if (str == NULL) str = s->str; s->str = str; } if (!s->is_wide_char) str8(str)[s->len] = 0; #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_add_tail(&str->link, &s->ctx->rt->string_list); #endif str->is_wide_char = s->is_wide_char; str->len = s->len; s->str = NULL; return JS_MKPTR(JS_TAG_STRING, str); } /* create a string from a UTF-8 buffer */ JSValue JS_NewStringLen(JSContext *ctx, const char *buf, size_t buf_len) { JSString *str; size_t len; int kind; if (buf_len <= 0) { return JS_AtomToString(ctx, JS_ATOM_empty_string); } /* Compute string kind and length: 7-bit, 8-bit, 16-bit, 16-bit UTF-16 */ kind = utf8_scan(buf, buf_len, &len); if (len > JS_STRING_LEN_MAX) return JS_ThrowRangeError(ctx, "invalid string length"); switch (kind) { case UTF8_PLAIN_ASCII: str = js_alloc_string(ctx, len, 0); if (!str) return JS_EXCEPTION; memcpy(str8(str), buf, len); str8(str)[len] = '\0'; break; case UTF8_NON_ASCII: /* buf contains non-ASCII code-points, but limited to 8-bit values */ str = js_alloc_string(ctx, len, 0); if (!str) return JS_EXCEPTION; utf8_decode_buf8(str8(str), len + 1, buf, buf_len); break; default: // This causes a potential problem in JS_ThrowError if message is invalid //if (kind & UTF8_HAS_ERRORS) // return JS_ThrowRangeError(ctx, "invalid UTF-8 sequence"); str = js_alloc_string(ctx, len, 1); if (!str) return JS_EXCEPTION; utf8_decode_buf16(str16(str), len, buf, buf_len); break; } return JS_MKPTR(JS_TAG_STRING, str); } static JSValue JS_ConcatString3(JSContext *ctx, const char *str1, JSValue str2, const char *str3) { StringBuffer b_s, *b = &b_s; int len1, len3; JSString *p; if (unlikely(JS_VALUE_GET_TAG(str2) != JS_TAG_STRING)) { str2 = JS_ToStringFree(ctx, str2); if (JS_IsException(str2)) goto fail; } p = JS_VALUE_GET_STRING(str2); len1 = strlen(str1); len3 = strlen(str3); if (string_buffer_init2(ctx, b, len1 + p->len + len3, p->is_wide_char)) goto fail; string_buffer_write8(b, (const uint8_t *)str1, len1); string_buffer_concat(b, p, 0, p->len); string_buffer_write8(b, (const uint8_t *)str3, len3); JS_FreeValue(ctx, str2); return string_buffer_end(b); fail: JS_FreeValue(ctx, str2); return JS_EXCEPTION; } /* `str` may be pure ASCII or UTF-8 encoded */ JSValue JS_NewAtomString(JSContext *ctx, const char *str) { JSAtom atom = JS_NewAtom(ctx, str); if (atom == JS_ATOM_NULL) return JS_EXCEPTION; JSValue val = JS_AtomToString(ctx, atom); JS_FreeAtom(ctx, atom); return val; } /* return (NULL, 0) if exception. */ /* return pointer into a JSString with a live ref_count */ /* cesu8 determines if non-BMP1 codepoints are encoded as 1 or 2 utf-8 sequences */ const char *JS_ToCStringLen2(JSContext *ctx, size_t *plen, JSValueConst val1, bool cesu8) { JSValue val; JSString *str, *str_new; int pos, len, c, c1; JSObject *p; uint8_t *q; if (JS_VALUE_GET_TAG(val1) == JS_TAG_STRING) { val = js_dup(val1); goto go; } val = JS_ToString(ctx, val1); if (!JS_IsException(val)) goto go; // Stringification can fail when there is an exception pending, // e.g. a stack overflow InternalError. Special-case exception // objects to make debugging easier, look up the .message property // and stringify that. if (JS_VALUE_GET_TAG(val1) != JS_TAG_OBJECT) goto fail; p = JS_VALUE_GET_OBJ(val1); if (p->class_id != JS_CLASS_ERROR) goto fail; val = JS_GetProperty(ctx, val1, JS_ATOM_message); if (JS_VALUE_GET_TAG(val) != JS_TAG_STRING) { JS_FreeValue(ctx, val); goto fail; } go: str = JS_VALUE_GET_STRING(val); len = str->len; if (!str->is_wide_char) { const uint8_t *src = str8(str); int count; /* count the number of non-ASCII characters */ /* Scanning the whole string is required for ASCII strings, and computing the number of non-ASCII bytes is less expensive than testing each byte, hence this method is faster for ASCII strings, which is the most common case. */ count = 0; for (pos = 0; pos < len; pos++) { count += src[pos] >> 7; } if (count == 0) { if (plen) *plen = len; return (const char *)src; } str_new = js_alloc_string(ctx, len + count, 0); if (!str_new) goto fail; q = str8(str_new); for (pos = 0; pos < len; pos++) { c = src[pos]; if (c < 0x80) { *q++ = c; } else { *q++ = (c >> 6) | 0xc0; *q++ = (c & 0x3f) | 0x80; } } } else { const uint16_t *src = str16(str); /* Allocate 3 bytes per 16 bit code point. Surrogate pairs may produce 4 bytes but use 2 code points. */ str_new = js_alloc_string(ctx, len * 3, 0); if (!str_new) goto fail; q = str8(str_new); pos = 0; while (pos < len) { c = src[pos++]; if (c < 0x80) { *q++ = c; } else { if (is_hi_surrogate(c)) { if (pos < len && !cesu8) { c1 = src[pos]; if (is_lo_surrogate(c1)) { pos++; c = from_surrogate(c, c1); } else { /* Keep unmatched surrogate code points */ /* c = 0xfffd; */ /* error */ } } else { /* Keep unmatched surrogate code points */ /* c = 0xfffd; */ /* error */ } } q += utf8_encode(q, c); } } } *q = '\0'; str_new->len = q - str8(str_new); JS_FreeValue(ctx, val); if (plen) *plen = str_new->len; return (const char *)str8(str_new); fail: if (plen) *plen = 0; return NULL; } void JS_FreeCString(JSContext *ctx, const char *ptr) { if (!ptr) return; /* purposely removing constness */ JS_FreeValue(ctx, JS_MKPTR(JS_TAG_STRING, (JSString *)ptr - 1)); } static int memcmp16_8(const uint16_t *src1, const uint8_t *src2, int len) { int c, i; for(i = 0; i < len; i++) { c = src1[i] - src2[i]; if (c != 0) return c; } return 0; } static int memcmp16(const uint16_t *src1, const uint16_t *src2, int len) { int c, i; for(i = 0; i < len; i++) { c = src1[i] - src2[i]; if (c != 0) return c; } return 0; } static int js_string_memcmp(JSString *p1, JSString *p2, int len) { int res; if (likely(!p1->is_wide_char)) { if (likely(!p2->is_wide_char)) res = memcmp(str8(p1), str8(p2), len); else res = -memcmp16_8(str16(p2), str8(p1), len); } else { if (!p2->is_wide_char) res = memcmp16_8(str16(p1), str8(p2), len); else res = memcmp16(str16(p1), str16(p2), len); } return res; } static bool js_string_eq(JSString *p1, JSString *p2) { if (p1->len != p2->len) return false; return js_string_memcmp(p1, p2, p1->len) == 0; } /* return < 0, 0 or > 0 */ static int js_string_compare(JSString *p1, JSString *p2) { int res, len; len = min_int(p1->len, p2->len); res = js_string_memcmp(p1, p2, len); if (res == 0) res = compare_u32(p1->len, p2->len); return res; } static void copy_str16(uint16_t *dst, JSString *p, int offset, int len) { if (p->is_wide_char) { memcpy(dst, str16(p) + offset, len * 2); } else { const uint8_t *src1 = str8(p) + offset; int i; for(i = 0; i < len; i++) dst[i] = src1[i]; } } static JSValue JS_ConcatString1(JSContext *ctx, JSString *p1, JSString *p2) { JSString *p; uint32_t len; int is_wide_char; len = p1->len + p2->len; if (len > JS_STRING_LEN_MAX) return JS_ThrowRangeError(ctx, "invalid string length"); is_wide_char = p1->is_wide_char | p2->is_wide_char; p = js_alloc_string(ctx, len, is_wide_char); if (!p) return JS_EXCEPTION; if (!is_wide_char) { memcpy(str8(p), str8(p1), p1->len); memcpy(str8(p) + p1->len, str8(p2), p2->len); str8(p)[len] = '\0'; } else { copy_str16(str16(p), p1, 0, p1->len); copy_str16(str16(p) + p1->len, p2, 0, p2->len); } return JS_MKPTR(JS_TAG_STRING, p); } /* op1 and op2 are converted to strings. For convience, op1 or op2 = JS_EXCEPTION are accepted and return JS_EXCEPTION. */ static JSValue JS_ConcatString(JSContext *ctx, JSValue op1, JSValue op2) { JSValue ret; JSString *p1, *p2; if (unlikely(JS_VALUE_GET_TAG(op1) != JS_TAG_STRING)) { op1 = JS_ToStringFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); return JS_EXCEPTION; } } if (unlikely(JS_VALUE_GET_TAG(op2) != JS_TAG_STRING)) { op2 = JS_ToStringFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); return JS_EXCEPTION; } } p1 = JS_VALUE_GET_STRING(op1); p2 = JS_VALUE_GET_STRING(op2); /* XXX: could also check if p1 is empty */ if (p2->len == 0) { goto ret_op1; } if (p1->header.ref_count == 1 && p1->is_wide_char == p2->is_wide_char && js_malloc_usable_size(ctx, p1) >= sizeof(*p1) + ((p1->len + p2->len) << p2->is_wide_char) + 1 - p1->is_wide_char) { /* Concatenate in place in available space at the end of p1 */ if (p1->is_wide_char) { memcpy(str16(p1) + p1->len, str16(p2), p2->len << 1); p1->len += p2->len; } else { memcpy(str8(p1) + p1->len, str8(p2), p2->len); p1->len += p2->len; str8(p1)[p1->len] = '\0'; } ret_op1: JS_FreeValue(ctx, op2); return op1; } ret = JS_ConcatString1(ctx, p1, p2); JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); return ret; } /* Shape support */ static inline size_t get_shape_size(size_t hash_size, size_t prop_size) { return hash_size * sizeof(uint32_t) + sizeof(JSShape) + prop_size * sizeof(JSShapeProperty); } static inline JSShape *get_shape_from_alloc(void *sh_alloc, size_t hash_size) { return (JSShape *)(void *)((uint32_t *)sh_alloc + hash_size); } static inline uint32_t *prop_hash_end(JSShape *sh) { return (uint32_t *)sh; } static inline void *get_alloc_from_shape(JSShape *sh) { return prop_hash_end(sh) - ((intptr_t)sh->prop_hash_mask + 1); } static inline JSShapeProperty *get_shape_prop(JSShape *sh) { return sh->prop; } static int init_shape_hash(JSRuntime *rt) { rt->shape_hash_bits = 4; /* 16 shapes */ rt->shape_hash_size = 1 << rt->shape_hash_bits; rt->shape_hash_count = 0; rt->shape_hash = js_mallocz_rt(rt, sizeof(rt->shape_hash[0]) * rt->shape_hash_size); if (!rt->shape_hash) return -1; return 0; } /* same magic hash multiplier as the Linux kernel */ static uint32_t shape_hash(uint32_t h, uint32_t val) { return (h + val) * 0x9e370001; } /* truncate the shape hash to 'hash_bits' bits */ static uint32_t get_shape_hash(uint32_t h, int hash_bits) { return h >> (32 - hash_bits); } static uint32_t shape_initial_hash(JSObject *proto) { uint32_t h; h = shape_hash(1, (uintptr_t)proto); if (sizeof(proto) > 4) h = shape_hash(h, (uint64_t)(uintptr_t)proto >> 32); return h; } static int resize_shape_hash(JSRuntime *rt, int new_shape_hash_bits) { int new_shape_hash_size, i; uint32_t h; JSShape **new_shape_hash, *sh, *sh_next; new_shape_hash_size = 1 << new_shape_hash_bits; new_shape_hash = js_mallocz_rt(rt, sizeof(rt->shape_hash[0]) * new_shape_hash_size); if (!new_shape_hash) return -1; for(i = 0; i < rt->shape_hash_size; i++) { for(sh = rt->shape_hash[i]; sh != NULL; sh = sh_next) { sh_next = sh->shape_hash_next; h = get_shape_hash(sh->hash, new_shape_hash_bits); sh->shape_hash_next = new_shape_hash[h]; new_shape_hash[h] = sh; } } js_free_rt(rt, rt->shape_hash); rt->shape_hash_bits = new_shape_hash_bits; rt->shape_hash_size = new_shape_hash_size; rt->shape_hash = new_shape_hash; return 0; } static void js_shape_hash_link(JSRuntime *rt, JSShape *sh) { uint32_t h; h = get_shape_hash(sh->hash, rt->shape_hash_bits); sh->shape_hash_next = rt->shape_hash[h]; rt->shape_hash[h] = sh; rt->shape_hash_count++; } static void js_shape_hash_unlink(JSRuntime *rt, JSShape *sh) { uint32_t h; JSShape **psh; h = get_shape_hash(sh->hash, rt->shape_hash_bits); psh = &rt->shape_hash[h]; while (*psh != sh) psh = &(*psh)->shape_hash_next; *psh = sh->shape_hash_next; rt->shape_hash_count--; } /* create a new empty shape with prototype 'proto' */ static no_inline JSShape *js_new_shape2(JSContext *ctx, JSObject *proto, int hash_size, int prop_size) { JSRuntime *rt = ctx->rt; void *sh_alloc; JSShape *sh; /* resize the shape hash table if necessary */ if (2 * (rt->shape_hash_count + 1) > rt->shape_hash_size) { resize_shape_hash(rt, rt->shape_hash_bits + 1); } sh_alloc = js_malloc(ctx, get_shape_size(hash_size, prop_size)); if (!sh_alloc) return NULL; sh = get_shape_from_alloc(sh_alloc, hash_size); sh->header.ref_count = 1; add_gc_object(rt, &sh->header, JS_GC_OBJ_TYPE_SHAPE); if (proto) js_dup(JS_MKPTR(JS_TAG_OBJECT, proto)); sh->proto = proto; memset(prop_hash_end(sh) - hash_size, 0, sizeof(prop_hash_end(sh)[0]) * hash_size); sh->prop_hash_mask = hash_size - 1; sh->prop_size = prop_size; sh->prop_count = 0; sh->deleted_prop_count = 0; /* insert in the hash table */ sh->hash = shape_initial_hash(proto); sh->is_hashed = true; sh->has_small_array_index = false; js_shape_hash_link(ctx->rt, sh); return sh; } static JSShape *js_new_shape(JSContext *ctx, JSObject *proto) { return js_new_shape2(ctx, proto, JS_PROP_INITIAL_HASH_SIZE, JS_PROP_INITIAL_SIZE); } /* The shape is cloned. The new shape is not inserted in the shape hash table */ static JSShape *js_clone_shape(JSContext *ctx, JSShape *sh1) { JSShape *sh; void *sh_alloc, *sh_alloc1; size_t size; JSShapeProperty *pr; uint32_t i, hash_size; hash_size = sh1->prop_hash_mask + 1; size = get_shape_size(hash_size, sh1->prop_size); sh_alloc = js_malloc(ctx, size); if (!sh_alloc) return NULL; sh_alloc1 = get_alloc_from_shape(sh1); memcpy(sh_alloc, sh_alloc1, size); sh = get_shape_from_alloc(sh_alloc, hash_size); sh->header.ref_count = 1; add_gc_object(ctx->rt, &sh->header, JS_GC_OBJ_TYPE_SHAPE); sh->is_hashed = false; if (sh->proto) { js_dup(JS_MKPTR(JS_TAG_OBJECT, sh->proto)); } for(i = 0, pr = get_shape_prop(sh); i < sh->prop_count; i++, pr++) { JS_DupAtom(ctx, pr->atom); } return sh; } static JSShape *js_dup_shape(JSShape *sh) { sh->header.ref_count++; return sh; } static void js_free_shape0(JSRuntime *rt, JSShape *sh) { uint32_t i; JSShapeProperty *pr; assert(sh->header.ref_count == 0); if (sh->is_hashed) js_shape_hash_unlink(rt, sh); if (sh->proto != NULL) { JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_OBJECT, sh->proto)); } pr = get_shape_prop(sh); for(i = 0; i < sh->prop_count; i++) { JS_FreeAtomRT(rt, pr->atom); pr++; } remove_gc_object(&sh->header); js_free_rt(rt, get_alloc_from_shape(sh)); } static void js_free_shape(JSRuntime *rt, JSShape *sh) { if (unlikely(--sh->header.ref_count <= 0)) { js_free_shape0(rt, sh); } } static void js_free_shape_null(JSRuntime *rt, JSShape *sh) { if (sh) js_free_shape(rt, sh); } /* make space to hold at least 'count' properties */ static no_inline int resize_properties(JSContext *ctx, JSShape **psh, JSObject *p, uint32_t count) { JSShape *sh; uint32_t new_size, new_hash_size, new_hash_mask, i; JSShapeProperty *pr; void *sh_alloc; intptr_t h; sh = *psh; new_size = max_int(count, sh->prop_size * 3 / 2); /* Reallocate prop array first to avoid crash or size inconsistency in case of memory allocation failure */ if (p) { JSProperty *new_prop; new_prop = js_realloc(ctx, p->prop, sizeof(new_prop[0]) * new_size); if (unlikely(!new_prop)) return -1; p->prop = new_prop; } new_hash_size = sh->prop_hash_mask + 1; while (new_hash_size < new_size) new_hash_size = 2 * new_hash_size; if (new_hash_size != (sh->prop_hash_mask + 1)) { JSShape *old_sh; /* resize the hash table and the properties */ old_sh = sh; sh_alloc = js_malloc(ctx, get_shape_size(new_hash_size, new_size)); if (!sh_alloc) return -1; sh = get_shape_from_alloc(sh_alloc, new_hash_size); list_del(&old_sh->header.link); /* copy all the fields and the properties */ memcpy(sh, old_sh, sizeof(JSShape) + sizeof(sh->prop[0]) * old_sh->prop_count); list_add_tail(&sh->header.link, &ctx->rt->gc_obj_list); new_hash_mask = new_hash_size - 1; sh->prop_hash_mask = new_hash_mask; memset(prop_hash_end(sh) - new_hash_size, 0, sizeof(prop_hash_end(sh)[0]) * new_hash_size); for(i = 0, pr = sh->prop; i < sh->prop_count; i++, pr++) { if (pr->atom != JS_ATOM_NULL) { h = ((uintptr_t)pr->atom & new_hash_mask); pr->hash_next = prop_hash_end(sh)[-h - 1]; prop_hash_end(sh)[-h - 1] = i + 1; } } js_free(ctx, get_alloc_from_shape(old_sh)); } else { /* only resize the properties */ list_del(&sh->header.link); sh_alloc = js_realloc(ctx, get_alloc_from_shape(sh), get_shape_size(new_hash_size, new_size)); if (unlikely(!sh_alloc)) { /* insert again in the GC list */ list_add_tail(&sh->header.link, &ctx->rt->gc_obj_list); return -1; } sh = get_shape_from_alloc(sh_alloc, new_hash_size); list_add_tail(&sh->header.link, &ctx->rt->gc_obj_list); } *psh = sh; sh->prop_size = new_size; return 0; } /* remove the deleted properties. */ static int compact_properties(JSContext *ctx, JSObject *p) { JSShape *sh, *old_sh; void *sh_alloc; intptr_t h; uint32_t new_hash_size, i, j, new_hash_mask, new_size; JSShapeProperty *old_pr, *pr; JSProperty *prop, *new_prop; sh = p->shape; assert(!sh->is_hashed); new_size = max_int(JS_PROP_INITIAL_SIZE, sh->prop_count - sh->deleted_prop_count); assert(new_size <= sh->prop_size); new_hash_size = sh->prop_hash_mask + 1; while ((new_hash_size / 2) >= new_size) new_hash_size = new_hash_size / 2; new_hash_mask = new_hash_size - 1; /* resize the hash table and the properties */ old_sh = sh; sh_alloc = js_malloc(ctx, get_shape_size(new_hash_size, new_size)); if (!sh_alloc) return -1; sh = get_shape_from_alloc(sh_alloc, new_hash_size); list_del(&old_sh->header.link); memcpy(sh, old_sh, sizeof(JSShape)); list_add_tail(&sh->header.link, &ctx->rt->gc_obj_list); memset(prop_hash_end(sh) - new_hash_size, 0, sizeof(prop_hash_end(sh)[0]) * new_hash_size); j = 0; old_pr = old_sh->prop; pr = sh->prop; prop = p->prop; for(i = 0; i < sh->prop_count; i++) { if (old_pr->atom != JS_ATOM_NULL) { pr->atom = old_pr->atom; pr->flags = old_pr->flags; h = ((uintptr_t)old_pr->atom & new_hash_mask); pr->hash_next = prop_hash_end(sh)[-h - 1]; prop_hash_end(sh)[-h - 1] = j + 1; prop[j] = prop[i]; j++; pr++; } old_pr++; } assert(j == (sh->prop_count - sh->deleted_prop_count)); sh->prop_hash_mask = new_hash_mask; sh->prop_size = new_size; sh->deleted_prop_count = 0; sh->prop_count = j; p->shape = sh; js_free(ctx, get_alloc_from_shape(old_sh)); /* reduce the size of the object properties */ new_prop = js_realloc(ctx, p->prop, sizeof(new_prop[0]) * new_size); if (new_prop) p->prop = new_prop; return 0; } static int add_shape_property(JSContext *ctx, JSShape **psh, JSObject *p, JSAtom atom, int prop_flags) { JSRuntime *rt = ctx->rt; JSShape *sh = *psh; JSShapeProperty *pr, *prop; uint32_t hash_mask, new_shape_hash = 0; intptr_t h; /* update the shape hash */ if (sh->is_hashed) { js_shape_hash_unlink(rt, sh); new_shape_hash = shape_hash(shape_hash(sh->hash, atom), prop_flags); } if (unlikely(sh->prop_count >= sh->prop_size)) { if (resize_properties(ctx, psh, p, sh->prop_count + 1)) { /* in case of error, reinsert in the hash table. sh is still valid if resize_properties() failed */ if (sh->is_hashed) js_shape_hash_link(rt, sh); return -1; } sh = *psh; } if (sh->is_hashed) { sh->hash = new_shape_hash; js_shape_hash_link(rt, sh); } /* Initialize the new shape property. The object property at p->prop[sh->prop_count] is uninitialized */ prop = get_shape_prop(sh); pr = &prop[sh->prop_count++]; pr->atom = JS_DupAtom(ctx, atom); pr->flags = prop_flags; sh->has_small_array_index |= __JS_AtomIsTaggedInt(atom); /* add in hash table */ hash_mask = sh->prop_hash_mask; h = atom & hash_mask; pr->hash_next = prop_hash_end(sh)[-h - 1]; prop_hash_end(sh)[-h - 1] = sh->prop_count; return 0; } /* find a hashed empty shape matching the prototype. Return NULL if not found */ static JSShape *find_hashed_shape_proto(JSRuntime *rt, JSObject *proto) { JSShape *sh1; uint32_t h, h1; h = shape_initial_hash(proto); h1 = get_shape_hash(h, rt->shape_hash_bits); for(sh1 = rt->shape_hash[h1]; sh1 != NULL; sh1 = sh1->shape_hash_next) { if (sh1->hash == h && sh1->proto == proto && sh1->prop_count == 0) { return sh1; } } return NULL; } /* find a hashed shape matching sh + (prop, prop_flags). Return NULL if not found */ static JSShape *find_hashed_shape_prop(JSRuntime *rt, JSShape *sh, JSAtom atom, int prop_flags) { JSShape *sh1; uint32_t h, h1, i, n; h = sh->hash; h = shape_hash(h, atom); h = shape_hash(h, prop_flags); h1 = get_shape_hash(h, rt->shape_hash_bits); for(sh1 = rt->shape_hash[h1]; sh1 != NULL; sh1 = sh1->shape_hash_next) { /* we test the hash first so that the rest is done only if the shapes really match */ if (sh1->hash == h && sh1->proto == sh->proto && sh1->prop_count == ((n = sh->prop_count) + 1)) { for(i = 0; i < n; i++) { if (unlikely(sh1->prop[i].atom != sh->prop[i].atom) || unlikely(sh1->prop[i].flags != sh->prop[i].flags)) goto next; } if (unlikely(sh1->prop[n].atom != atom) || unlikely(sh1->prop[n].flags != prop_flags)) goto next; return sh1; } next: ; } return NULL; } static __maybe_unused void JS_DumpShape(JSRuntime *rt, int i, JSShape *sh) { char atom_buf[ATOM_GET_STR_BUF_SIZE]; int j; /* XXX: should output readable class prototype */ printf("%5d %3d%c %14p %5d %5d", i, sh->header.ref_count, " *"[sh->is_hashed], (void *)sh->proto, sh->prop_size, sh->prop_count); for(j = 0; j < sh->prop_count; j++) { printf(" %s", JS_AtomGetStrRT(rt, atom_buf, sizeof(atom_buf), sh->prop[j].atom)); } printf("\n"); } static __maybe_unused void JS_DumpShapes(JSRuntime *rt) { int i; JSShape *sh; struct list_head *el; JSObject *p; JSGCObjectHeader *gp; printf("JSShapes: {\n"); printf("%5s %4s %14s %5s %5s %s\n", "SLOT", "REFS", "PROTO", "SIZE", "COUNT", "PROPS"); for(i = 0; i < rt->shape_hash_size; i++) { for(sh = rt->shape_hash[i]; sh != NULL; sh = sh->shape_hash_next) { JS_DumpShape(rt, i, sh); assert(sh->is_hashed); } } /* dump non-hashed shapes */ list_for_each(el, &rt->gc_obj_list) { gp = list_entry(el, JSGCObjectHeader, link); if (gp->gc_obj_type == JS_GC_OBJ_TYPE_JS_OBJECT) { p = (JSObject *)gp; if (!p->shape->is_hashed) { JS_DumpShape(rt, -1, p->shape); } } } printf("}\n"); } static JSValue JS_NewObjectFromShape(JSContext *ctx, JSShape *sh, JSClassID class_id) { JSObject *p; js_trigger_gc(ctx->rt, sizeof(JSObject)); p = js_malloc(ctx, sizeof(JSObject)); if (unlikely(!p)) goto fail; p->class_id = class_id; p->extensible = true; p->free_mark = 0; p->is_exotic = 0; p->fast_array = 0; p->is_constructor = 0; p->is_uncatchable_error = 0; p->tmp_mark = 0; p->is_HTMLDDA = 0; p->first_weak_ref = NULL; p->u.opaque = NULL; p->shape = sh; p->prop = js_malloc(ctx, sizeof(JSProperty) * sh->prop_size); if (unlikely(!p->prop)) { js_free(ctx, p); fail: js_free_shape(ctx->rt, sh); return JS_EXCEPTION; } switch(class_id) { case JS_CLASS_OBJECT: break; case JS_CLASS_ARRAY: { JSProperty *pr; p->is_exotic = 1; p->fast_array = 1; p->u.array.u.values = NULL; p->u.array.count = 0; p->u.array.u1.size = 0; /* the length property is always the first one */ if (likely(sh == ctx->array_shape)) { pr = &p->prop[0]; } else { /* only used for the first array */ /* cannot fail */ pr = add_property(ctx, p, JS_ATOM_length, JS_PROP_WRITABLE | JS_PROP_LENGTH); } pr->u.value = js_int32(0); } break; case JS_CLASS_C_FUNCTION: p->prop[0].u.value = JS_UNDEFINED; break; case JS_CLASS_ARGUMENTS: case JS_CLASS_UINT8C_ARRAY: case JS_CLASS_INT8_ARRAY: case JS_CLASS_UINT8_ARRAY: case JS_CLASS_INT16_ARRAY: case JS_CLASS_UINT16_ARRAY: case JS_CLASS_INT32_ARRAY: case JS_CLASS_UINT32_ARRAY: case JS_CLASS_BIG_INT64_ARRAY: case JS_CLASS_BIG_UINT64_ARRAY: case JS_CLASS_FLOAT16_ARRAY: case JS_CLASS_FLOAT32_ARRAY: case JS_CLASS_FLOAT64_ARRAY: p->is_exotic = 1; p->fast_array = 1; p->u.array.u.ptr = NULL; p->u.array.count = 0; break; case JS_CLASS_DATAVIEW: p->u.array.u.ptr = NULL; p->u.array.count = 0; break; case JS_CLASS_NUMBER: case JS_CLASS_STRING: case JS_CLASS_BOOLEAN: case JS_CLASS_SYMBOL: case JS_CLASS_DATE: case JS_CLASS_BIG_INT: p->u.object_data = JS_UNDEFINED; goto set_exotic; case JS_CLASS_REGEXP: p->u.regexp.pattern = NULL; p->u.regexp.bytecode = NULL; goto set_exotic; default: set_exotic: if (ctx->rt->class_array[class_id].exotic) { p->is_exotic = 1; } break; } p->header.ref_count = 1; add_gc_object(ctx->rt, &p->header, JS_GC_OBJ_TYPE_JS_OBJECT); return JS_MKPTR(JS_TAG_OBJECT, p); } static JSObject *get_proto_obj(JSValueConst proto_val) { if (JS_VALUE_GET_TAG(proto_val) != JS_TAG_OBJECT) return NULL; else return JS_VALUE_GET_OBJ(proto_val); } /* WARNING: proto must be an object or JS_NULL */ JSValue JS_NewObjectProtoClass(JSContext *ctx, JSValueConst proto_val, JSClassID class_id) { JSShape *sh; JSObject *proto; proto = get_proto_obj(proto_val); sh = find_hashed_shape_proto(ctx->rt, proto); if (likely(sh)) { sh = js_dup_shape(sh); } else { sh = js_new_shape(ctx, proto); if (!sh) return JS_EXCEPTION; } return JS_NewObjectFromShape(ctx, sh, class_id); } static int JS_SetObjectData(JSContext *ctx, JSValueConst obj, JSValue val) { JSObject *p; if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { p = JS_VALUE_GET_OBJ(obj); switch(p->class_id) { case JS_CLASS_NUMBER: case JS_CLASS_STRING: case JS_CLASS_BOOLEAN: case JS_CLASS_SYMBOL: case JS_CLASS_DATE: case JS_CLASS_BIG_INT: JS_FreeValue(ctx, p->u.object_data); p->u.object_data = val; return 0; } } JS_FreeValue(ctx, val); if (!JS_IsException(obj)) JS_ThrowTypeError(ctx, "invalid object type"); return -1; } JSValue JS_NewObjectClass(JSContext *ctx, int class_id) { return JS_NewObjectProtoClass(ctx, ctx->class_proto[class_id], class_id); } JSValue JS_NewObjectProto(JSContext *ctx, JSValueConst proto) { return JS_NewObjectProtoClass(ctx, proto, JS_CLASS_OBJECT); } JSValue JS_NewObjectFrom(JSContext *ctx, int count, const JSAtom *props, const JSValue *values) { JSShapeProperty *pr; uint32_t *hash; JSRuntime *rt; JSObject *p; JSShape *sh; JSValue obj; JSAtom atom; intptr_t h; int i; rt = ctx->rt; obj = JS_NewObject(ctx); if (JS_IsException(obj)) return JS_EXCEPTION; if (count > 0) { p = JS_VALUE_GET_OBJ(obj); sh = p->shape; assert(sh->is_hashed); assert(sh->header.ref_count == 1); js_shape_hash_unlink(rt, sh); if (resize_properties(ctx, &sh, p, count)) { js_shape_hash_link(rt, sh); JS_FreeValue(ctx, obj); return JS_EXCEPTION; } p->shape = sh; for (i = 0; i < count; i++) { atom = props[i]; pr = &sh->prop[i]; sh->hash = shape_hash(shape_hash(sh->hash, atom), JS_PROP_C_W_E); sh->has_small_array_index |= __JS_AtomIsTaggedInt(atom); h = atom & sh->prop_hash_mask; hash = &prop_hash_end(sh)[-h - 1]; pr->hash_next = *hash; *hash = i + 1; pr->atom = JS_DupAtom(ctx, atom); pr->flags = JS_PROP_C_W_E; p->prop[i].u.value = values[i]; } js_shape_hash_link(rt, sh); sh->prop_count = count; } return obj; } JSValue JS_NewObjectFromStr(JSContext *ctx, int count, const char **props, const JSValue *values) { JSAtom atoms_s[16], *atoms = atoms_s; JSValue ret; int i; i = 0; ret = JS_EXCEPTION; if (count < 1) goto out; if (count > (int)countof(atoms_s)) { atoms = js_malloc(ctx, count * sizeof(*atoms)); if (!atoms) return JS_EXCEPTION; } for (i = 0; i < count; i++) { atoms[i] = JS_NewAtom(ctx, props[i]); if (atoms[i] == JS_ATOM_NULL) goto out; } ret = JS_NewObjectFrom(ctx, count, atoms, values); out: while (i-- > 0) JS_FreeAtom(ctx, atoms[i]); if (atoms != atoms_s) js_free(ctx, atoms); return ret; } JSValue JS_NewArray(JSContext *ctx) { return JS_NewObjectFromShape(ctx, js_dup_shape(ctx->array_shape), JS_CLASS_ARRAY); } // note: takes ownership of |values|, unlike js_create_array JSValue JS_NewArrayFrom(JSContext *ctx, int count, const JSValue *values) { JSObject *p; JSValue obj; obj = JS_NewArray(ctx); if (JS_IsException(obj)) return JS_EXCEPTION; if (count > 0) { p = JS_VALUE_GET_OBJ(obj); if (expand_fast_array(ctx, p, count)) { JS_FreeValue(ctx, obj); return JS_EXCEPTION; } p->u.array.count = count; p->prop[0].u.value = js_int32(count); memcpy(p->u.array.u.values, values, count * sizeof(*values)); } return obj; } JSValue JS_NewObject(JSContext *ctx) { /* inline JS_NewObjectClass(ctx, JS_CLASS_OBJECT); */ return JS_NewObjectProtoClass(ctx, ctx->class_proto[JS_CLASS_OBJECT], JS_CLASS_OBJECT); } static void js_function_set_properties(JSContext *ctx, JSValue func_obj, JSAtom name, int len) { /* ES6 feature non compatible with ES5.1: length is configurable */ JS_DefinePropertyValue(ctx, func_obj, JS_ATOM_length, js_int32(len), JS_PROP_CONFIGURABLE); JS_DefinePropertyValue(ctx, func_obj, JS_ATOM_name, JS_AtomToString(ctx, name), JS_PROP_CONFIGURABLE); } static bool js_class_has_bytecode(JSClassID class_id) { return (class_id == JS_CLASS_BYTECODE_FUNCTION || class_id == JS_CLASS_GENERATOR_FUNCTION || class_id == JS_CLASS_ASYNC_FUNCTION || class_id == JS_CLASS_ASYNC_GENERATOR_FUNCTION); } /* return NULL without exception if not a function or no bytecode */ static JSFunctionBytecode *JS_GetFunctionBytecode(JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return NULL; p = JS_VALUE_GET_OBJ(val); if (!js_class_has_bytecode(p->class_id)) return NULL; return p->u.func.function_bytecode; } static void js_method_set_home_object(JSContext *ctx, JSValue func_obj, JSValue home_obj) { JSObject *p, *p1; JSFunctionBytecode *b; if (JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT) return; p = JS_VALUE_GET_OBJ(func_obj); if (!js_class_has_bytecode(p->class_id)) return; b = p->u.func.function_bytecode; if (b->need_home_object) { p1 = p->u.func.home_object; if (p1) { JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, p1)); } if (JS_VALUE_GET_TAG(home_obj) == JS_TAG_OBJECT) p1 = JS_VALUE_GET_OBJ(js_dup(home_obj)); else p1 = NULL; p->u.func.home_object = p1; } } static JSValue js_get_function_name(JSContext *ctx, JSAtom name) { JSValue name_str; name_str = JS_AtomToString(ctx, name); if (JS_AtomSymbolHasDescription(ctx, name)) { name_str = JS_ConcatString3(ctx, "[", name_str, "]"); } return name_str; } /* Modify the name of a method according to the atom and 'flags'. 'flags' is a bitmask of JS_PROP_HAS_GET and JS_PROP_HAS_SET. Also set the home object of the method. Return < 0 if exception. */ static int js_method_set_properties(JSContext *ctx, JSValue func_obj, JSAtom name, int flags, JSValue home_obj) { JSValue name_str; name_str = js_get_function_name(ctx, name); if (flags & JS_PROP_HAS_GET) { name_str = JS_ConcatString3(ctx, "get ", name_str, ""); } else if (flags & JS_PROP_HAS_SET) { name_str = JS_ConcatString3(ctx, "set ", name_str, ""); } if (JS_IsException(name_str)) return -1; if (JS_DefinePropertyValue(ctx, func_obj, JS_ATOM_name, name_str, JS_PROP_CONFIGURABLE) < 0) return -1; js_method_set_home_object(ctx, func_obj, home_obj); return 0; } /* Note: at least 'length' arguments will be readable in 'argv' */ /* `name` may be NULL, pure ASCII or UTF-8 encoded */ JSValue JS_NewCFunction3(JSContext *ctx, JSCFunction *func, const char *name, int length, JSCFunctionEnum cproto, int magic, JSValue proto_val) { JSValue func_obj; JSObject *p; JSAtom name_atom; func_obj = JS_NewObjectProtoClass(ctx, proto_val, JS_CLASS_C_FUNCTION); if (JS_IsException(func_obj)) return func_obj; p = JS_VALUE_GET_OBJ(func_obj); p->u.cfunc.realm = JS_DupContext(ctx); p->u.cfunc.c_function.generic = func; p->u.cfunc.length = length; p->u.cfunc.cproto = cproto; p->u.cfunc.magic = magic; p->is_constructor = (cproto == JS_CFUNC_constructor || cproto == JS_CFUNC_constructor_magic || cproto == JS_CFUNC_constructor_or_func || cproto == JS_CFUNC_constructor_or_func_magic); if (!name) name = ""; name_atom = JS_NewAtom(ctx, name); js_function_set_properties(ctx, func_obj, name_atom, length); JS_FreeAtom(ctx, name_atom); return func_obj; } /* Note: at least 'length' arguments will be readable in 'argv' */ JSValue JS_NewCFunction2(JSContext *ctx, JSCFunction *func, const char *name, int length, JSCFunctionEnum cproto, int magic) { return JS_NewCFunction3(ctx, func, name, length, cproto, magic, ctx->function_proto); } typedef struct JSCFunctionDataRecord { JSCFunctionData *func; uint8_t length; uint8_t data_len; uint16_t magic; JSValue data[]; } JSCFunctionDataRecord; static void js_c_function_data_finalizer(JSRuntime *rt, JSValueConst val) { JSCFunctionDataRecord *s = JS_GetOpaque(val, JS_CLASS_C_FUNCTION_DATA); int i; if (s) { for(i = 0; i < s->data_len; i++) { JS_FreeValueRT(rt, s->data[i]); } js_free_rt(rt, s); } } static void js_c_function_data_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSCFunctionDataRecord *s = JS_GetOpaque(val, JS_CLASS_C_FUNCTION_DATA); int i; if (s) { for(i = 0; i < s->data_len; i++) { JS_MarkValue(rt, s->data[i], mark_func); } } } static JSValue js_c_function_data_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_val, int argc, JSValueConst *argv, int flags) { JSCFunctionDataRecord *s = JS_GetOpaque(func_obj, JS_CLASS_C_FUNCTION_DATA); JSValueConst *arg_buf; int i; /* XXX: could add the function on the stack for debug */ if (unlikely(argc < s->length)) { arg_buf = alloca(sizeof(arg_buf[0]) * s->length); for(i = 0; i < argc; i++) arg_buf[i] = argv[i]; for(i = argc; i < s->length; i++) arg_buf[i] = JS_UNDEFINED; } else { arg_buf = argv; } return s->func(ctx, this_val, argc, arg_buf, s->magic, vc(s->data)); } JSValue JS_NewCFunctionData(JSContext *ctx, JSCFunctionData *func, int length, int magic, int data_len, JSValueConst *data) { JSCFunctionDataRecord *s; JSValue func_obj; int i; func_obj = JS_NewObjectProtoClass(ctx, ctx->function_proto, JS_CLASS_C_FUNCTION_DATA); if (JS_IsException(func_obj)) return func_obj; s = js_malloc(ctx, sizeof(*s) + data_len * sizeof(JSValue)); if (!s) { JS_FreeValue(ctx, func_obj); return JS_EXCEPTION; } s->func = func; s->length = length; s->data_len = data_len; s->magic = magic; for(i = 0; i < data_len; i++) s->data[i] = js_dup(data[i]); JS_SetOpaqueInternal(func_obj, s); js_function_set_properties(ctx, func_obj, JS_ATOM_empty_string, length); return func_obj; } static JSContext *js_autoinit_get_realm(JSProperty *pr) { return (JSContext *)(pr->u.init.realm_and_id & ~3); } static JSAutoInitIDEnum js_autoinit_get_id(JSProperty *pr) { return pr->u.init.realm_and_id & 3; } static void js_autoinit_free(JSRuntime *rt, JSProperty *pr) { JS_FreeContext(js_autoinit_get_realm(pr)); } static void js_autoinit_mark(JSRuntime *rt, JSProperty *pr, JS_MarkFunc *mark_func) { mark_func(rt, &js_autoinit_get_realm(pr)->header); } static void free_property(JSRuntime *rt, JSProperty *pr, int prop_flags) { if (unlikely(prop_flags & JS_PROP_TMASK)) { if ((prop_flags & JS_PROP_TMASK) == JS_PROP_GETSET) { if (pr->u.getset.getter) JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.getter)); if (pr->u.getset.setter) JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.setter)); } else if ((prop_flags & JS_PROP_TMASK) == JS_PROP_VARREF) { free_var_ref(rt, pr->u.var_ref); } else if ((prop_flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { js_autoinit_free(rt, pr); } } else { JS_FreeValueRT(rt, pr->u.value); } } static force_inline JSShapeProperty *find_own_property1(JSObject *p, JSAtom atom) { JSShape *sh; JSShapeProperty *pr, *prop; intptr_t h; sh = p->shape; h = (uintptr_t)atom & sh->prop_hash_mask; h = prop_hash_end(sh)[-h - 1]; prop = get_shape_prop(sh); while (h) { pr = &prop[h - 1]; if (likely(pr->atom == atom)) { return pr; } h = pr->hash_next; } return NULL; } static force_inline JSShapeProperty *find_own_property(JSProperty **ppr, JSObject *p, JSAtom atom) { JSShape *sh; JSShapeProperty *pr, *prop; intptr_t h; sh = p->shape; h = (uintptr_t)atom & sh->prop_hash_mask; h = prop_hash_end(sh)[-h - 1]; prop = get_shape_prop(sh); while (h) { pr = &prop[h - 1]; if (likely(pr->atom == atom)) { *ppr = &p->prop[h - 1]; /* the compiler should be able to assume that pr != NULL here */ return pr; } h = pr->hash_next; } *ppr = NULL; return NULL; } /* indicate that the object may be part of a function prototype cycle */ static void set_cycle_flag(JSContext *ctx, JSValueConst obj) { } static void free_var_ref(JSRuntime *rt, JSVarRef *var_ref) { if (var_ref) { assert(var_ref->header.ref_count > 0); if (--var_ref->header.ref_count == 0) { if (var_ref->is_detached) { JS_FreeValueRT(rt, var_ref->value); remove_gc_object(&var_ref->header); } else { list_del(&var_ref->header.link); /* still on the stack */ } js_free_rt(rt, var_ref); } } } static void js_array_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); int i; for(i = 0; i < p->u.array.count; i++) { JS_FreeValueRT(rt, p->u.array.u.values[i]); } js_free_rt(rt, p->u.array.u.values); } static void js_array_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); int i; for(i = 0; i < p->u.array.count; i++) { JS_MarkValue(rt, p->u.array.u.values[i], mark_func); } } static void js_object_data_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); JS_FreeValueRT(rt, p->u.object_data); p->u.object_data = JS_UNDEFINED; } static void js_object_data_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JS_MarkValue(rt, p->u.object_data, mark_func); } static void js_c_function_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); if (p->u.cfunc.realm) JS_FreeContext(p->u.cfunc.realm); } static void js_c_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); if (p->u.cfunc.realm) mark_func(rt, &p->u.cfunc.realm->header); } static void js_bytecode_function_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p1, *p = JS_VALUE_GET_OBJ(val); JSFunctionBytecode *b; JSVarRef **var_refs; int i; p1 = p->u.func.home_object; if (p1) { JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_OBJECT, p1)); } b = p->u.func.function_bytecode; if (b) { var_refs = p->u.func.var_refs; if (var_refs) { for(i = 0; i < b->closure_var_count; i++) free_var_ref(rt, var_refs[i]); js_free_rt(rt, var_refs); } JS_FreeValueRT(rt, JS_MKPTR(JS_TAG_FUNCTION_BYTECODE, b)); } } static void js_bytecode_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JSVarRef **var_refs = p->u.func.var_refs; JSFunctionBytecode *b = p->u.func.function_bytecode; int i; if (p->u.func.home_object) { JS_MarkValue(rt, JS_MKPTR(JS_TAG_OBJECT, p->u.func.home_object), mark_func); } if (b) { if (var_refs) { for(i = 0; i < b->closure_var_count; i++) { JSVarRef *var_ref = var_refs[i]; if (var_ref && var_ref->is_detached) { mark_func(rt, &var_ref->header); } } } /* must mark the function bytecode because template objects may be part of a cycle */ JS_MarkValue(rt, JS_MKPTR(JS_TAG_FUNCTION_BYTECODE, b), mark_func); } } static void js_bound_function_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); JSBoundFunction *bf = p->u.bound_function; int i; JS_FreeValueRT(rt, bf->func_obj); JS_FreeValueRT(rt, bf->this_val); for(i = 0; i < bf->argc; i++) { JS_FreeValueRT(rt, bf->argv[i]); } js_free_rt(rt, bf); } static void js_bound_function_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JSBoundFunction *bf = p->u.bound_function; int i; JS_MarkValue(rt, bf->func_obj, mark_func); JS_MarkValue(rt, bf->this_val, mark_func); for(i = 0; i < bf->argc; i++) JS_MarkValue(rt, bf->argv[i], mark_func); } static void js_for_in_iterator_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); JSForInIterator *it = p->u.for_in_iterator; JS_FreeValueRT(rt, it->obj); js_free_rt(rt, it); } static void js_for_in_iterator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JSForInIterator *it = p->u.for_in_iterator; JS_MarkValue(rt, it->obj, mark_func); } static void free_object(JSRuntime *rt, JSObject *p) { int i; JSClassFinalizer *finalizer; JSShape *sh; JSShapeProperty *pr; p->free_mark = 1; /* used to tell the object is invalid when freeing cycles */ /* free all the fields */ sh = p->shape; pr = get_shape_prop(sh); for(i = 0; i < sh->prop_count; i++) { free_property(rt, &p->prop[i], pr->flags); pr++; } js_free_rt(rt, p->prop); /* as an optimization we destroy the shape immediately without putting it in gc_zero_ref_count_list */ js_free_shape(rt, sh); /* fail safe */ p->shape = NULL; p->prop = NULL; if (unlikely(p->first_weak_ref)) { reset_weak_ref(rt, &p->first_weak_ref); } finalizer = rt->class_array[p->class_id].finalizer; if (finalizer) (*finalizer)(rt, JS_MKPTR(JS_TAG_OBJECT, p)); /* fail safe */ p->class_id = 0; p->u.opaque = NULL; p->u.func.var_refs = NULL; p->u.func.home_object = NULL; remove_gc_object(&p->header); if (rt->gc_phase == JS_GC_PHASE_REMOVE_CYCLES && p->header.ref_count != 0) { list_add_tail(&p->header.link, &rt->gc_zero_ref_count_list); } else { js_free_rt(rt, p); } } static void free_gc_object(JSRuntime *rt, JSGCObjectHeader *gp) { switch(gp->gc_obj_type) { case JS_GC_OBJ_TYPE_JS_OBJECT: free_object(rt, (JSObject *)gp); break; case JS_GC_OBJ_TYPE_FUNCTION_BYTECODE: free_function_bytecode(rt, (JSFunctionBytecode *)gp); break; default: abort(); } } static void free_zero_refcount(JSRuntime *rt) { struct list_head *el; JSGCObjectHeader *p; rt->gc_phase = JS_GC_PHASE_DECREF; for(;;) { el = rt->gc_zero_ref_count_list.next; if (el == &rt->gc_zero_ref_count_list) break; p = list_entry(el, JSGCObjectHeader, link); assert(p->ref_count == 0); free_gc_object(rt, p); } rt->gc_phase = JS_GC_PHASE_NONE; } /* called with the ref_count of 'v' reaches zero. */ static void js_free_value_rt(JSRuntime *rt, JSValue v) { uint32_t tag = JS_VALUE_GET_TAG(v); #ifdef ENABLE_DUMPS // JS_DUMP_FREE if (check_dump_flag(rt, JS_DUMP_FREE)) { /* Prevent invalid object access during GC */ if ((rt->gc_phase != JS_GC_PHASE_REMOVE_CYCLES) || (tag != JS_TAG_OBJECT && tag != JS_TAG_FUNCTION_BYTECODE)) { printf("Freeing "); if (tag == JS_TAG_OBJECT) { JS_DumpObject(rt, JS_VALUE_GET_OBJ(v)); } else { JS_DumpValue(rt, v); printf("\n"); } } } #endif switch(tag) { case JS_TAG_STRING: { JSString *p = JS_VALUE_GET_STRING(v); if (p->atom_type) { JS_FreeAtomStruct(rt, p); } else { #ifdef ENABLE_DUMPS // JS_DUMP_LEAKS list_del(&p->link); #endif js_free_rt(rt, p); } } break; case JS_TAG_OBJECT: case JS_TAG_FUNCTION_BYTECODE: { JSGCObjectHeader *p = JS_VALUE_GET_PTR(v); if (rt->gc_phase != JS_GC_PHASE_REMOVE_CYCLES) { list_del(&p->link); list_add(&p->link, &rt->gc_zero_ref_count_list); if (rt->gc_phase == JS_GC_PHASE_NONE) { free_zero_refcount(rt); } } } break; case JS_TAG_MODULE: abort(); /* never freed here */ break; case JS_TAG_BIG_INT: { JSBigInt *bf = JS_VALUE_GET_PTR(v); bf_delete(&bf->num); js_free_rt(rt, bf); } break; case JS_TAG_SYMBOL: { JSAtomStruct *p = JS_VALUE_GET_PTR(v); JS_FreeAtomStruct(rt, p); } break; default: printf("js_free_value_rt: unknown tag=%d\n", tag); abort(); } } void JS_FreeValueRT(JSRuntime *rt, JSValue v) { if (JS_VALUE_HAS_REF_COUNT(v)) { JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v); if (--p->ref_count <= 0) { js_free_value_rt(rt, v); } } } void JS_FreeValue(JSContext *ctx, JSValue v) { JS_FreeValueRT(ctx->rt, v); } /* garbage collection */ static void add_gc_object(JSRuntime *rt, JSGCObjectHeader *h, JSGCObjectTypeEnum type) { h->mark = 0; h->gc_obj_type = type; list_add_tail(&h->link, &rt->gc_obj_list); } static void remove_gc_object(JSGCObjectHeader *h) { list_del(&h->link); } void JS_MarkValue(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { if (JS_VALUE_HAS_REF_COUNT(val)) { switch(JS_VALUE_GET_TAG(val)) { case JS_TAG_OBJECT: case JS_TAG_FUNCTION_BYTECODE: mark_func(rt, JS_VALUE_GET_PTR(val)); break; default: break; } } } static void mark_children(JSRuntime *rt, JSGCObjectHeader *gp, JS_MarkFunc *mark_func) { switch(gp->gc_obj_type) { case JS_GC_OBJ_TYPE_JS_OBJECT: { JSObject *p = (JSObject *)gp; JSShapeProperty *prs; JSShape *sh; int i; sh = p->shape; mark_func(rt, &sh->header); /* mark all the fields */ prs = get_shape_prop(sh); for(i = 0; i < sh->prop_count; i++) { JSProperty *pr = &p->prop[i]; if (prs->atom != JS_ATOM_NULL) { if (prs->flags & JS_PROP_TMASK) { if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { if (pr->u.getset.getter) mark_func(rt, &pr->u.getset.getter->header); if (pr->u.getset.setter) mark_func(rt, &pr->u.getset.setter->header); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { if (pr->u.var_ref->is_detached) { /* Note: the tag does not matter provided it is a GC object */ mark_func(rt, &pr->u.var_ref->header); } } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { js_autoinit_mark(rt, pr, mark_func); } } else { JS_MarkValue(rt, pr->u.value, mark_func); } } prs++; } if (p->class_id != JS_CLASS_OBJECT) { JSClassGCMark *gc_mark; gc_mark = rt->class_array[p->class_id].gc_mark; if (gc_mark) gc_mark(rt, JS_MKPTR(JS_TAG_OBJECT, p), mark_func); } } break; case JS_GC_OBJ_TYPE_FUNCTION_BYTECODE: /* the template objects can be part of a cycle */ { JSFunctionBytecode *b = (JSFunctionBytecode *)gp; int i; for(i = 0; i < b->cpool_count; i++) { JS_MarkValue(rt, b->cpool[i], mark_func); } if (b->realm) mark_func(rt, &b->realm->header); } break; case JS_GC_OBJ_TYPE_VAR_REF: { JSVarRef *var_ref = (JSVarRef *)gp; /* only detached variable referenced are taken into account */ assert(var_ref->is_detached); JS_MarkValue(rt, *var_ref->pvalue, mark_func); } break; case JS_GC_OBJ_TYPE_ASYNC_FUNCTION: { JSAsyncFunctionData *s = (JSAsyncFunctionData *)gp; if (s->is_active) async_func_mark(rt, &s->func_state, mark_func); JS_MarkValue(rt, s->resolving_funcs[0], mark_func); JS_MarkValue(rt, s->resolving_funcs[1], mark_func); } break; case JS_GC_OBJ_TYPE_SHAPE: { JSShape *sh = (JSShape *)gp; if (sh->proto != NULL) { mark_func(rt, &sh->proto->header); } } break; case JS_GC_OBJ_TYPE_JS_CONTEXT: { JSContext *ctx = (JSContext *)gp; JS_MarkContext(rt, ctx, mark_func); } break; default: abort(); } } static void gc_decref_child(JSRuntime *rt, JSGCObjectHeader *p) { assert(p->ref_count > 0); p->ref_count--; if (p->ref_count == 0 && p->mark == 1) { list_del(&p->link); list_add_tail(&p->link, &rt->tmp_obj_list); } } static void gc_decref(JSRuntime *rt) { struct list_head *el, *el1; JSGCObjectHeader *p; init_list_head(&rt->tmp_obj_list); /* decrement the refcount of all the children of all the GC objects and move the GC objects with zero refcount to tmp_obj_list */ list_for_each_safe(el, el1, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); assert(p->mark == 0); mark_children(rt, p, gc_decref_child); p->mark = 1; if (p->ref_count == 0) { list_del(&p->link); list_add_tail(&p->link, &rt->tmp_obj_list); } } } static void gc_scan_incref_child(JSRuntime *rt, JSGCObjectHeader *p) { p->ref_count++; if (p->ref_count == 1) { /* ref_count was 0: remove from tmp_obj_list and add at the end of gc_obj_list */ list_del(&p->link); list_add_tail(&p->link, &rt->gc_obj_list); p->mark = 0; /* reset the mark for the next GC call */ } } static void gc_scan_incref_child2(JSRuntime *rt, JSGCObjectHeader *p) { p->ref_count++; } static void gc_scan(JSRuntime *rt) { struct list_head *el; JSGCObjectHeader *p; /* keep the objects with a refcount > 0 and their children. */ list_for_each(el, &rt->gc_obj_list) { p = list_entry(el, JSGCObjectHeader, link); assert(p->ref_count > 0); p->mark = 0; /* reset the mark for the next GC call */ mark_children(rt, p, gc_scan_incref_child); } /* restore the refcount of the objects to be deleted. */ list_for_each(el, &rt->tmp_obj_list) { p = list_entry(el, JSGCObjectHeader, link); mark_children(rt, p, gc_scan_incref_child2); } } static void gc_free_cycles(JSRuntime *rt) { struct list_head *el, *el1; JSGCObjectHeader *p; #ifdef ENABLE_DUMPS // JS_DUMP_GC_FREE bool header_done = false; #endif rt->gc_phase = JS_GC_PHASE_REMOVE_CYCLES; for(;;) { el = rt->tmp_obj_list.next; if (el == &rt->tmp_obj_list) break; p = list_entry(el, JSGCObjectHeader, link); /* Only need to free the GC object associated with JS values. The rest will be automatically removed because they must be referenced by them. */ switch(p->gc_obj_type) { case JS_GC_OBJ_TYPE_JS_OBJECT: case JS_GC_OBJ_TYPE_FUNCTION_BYTECODE: #ifdef ENABLE_DUMPS // JS_DUMP_GC_FREE if (check_dump_flag(rt, JS_DUMP_GC_FREE)) { if (!header_done) { printf("Freeing cycles:\n"); JS_DumpObjectHeader(rt); header_done = true; } JS_DumpGCObject(rt, p); } #endif free_gc_object(rt, p); break; default: list_del(&p->link); list_add_tail(&p->link, &rt->gc_zero_ref_count_list); break; } } rt->gc_phase = JS_GC_PHASE_NONE; list_for_each_safe(el, el1, &rt->gc_zero_ref_count_list) { p = list_entry(el, JSGCObjectHeader, link); assert(p->gc_obj_type == JS_GC_OBJ_TYPE_JS_OBJECT || p->gc_obj_type == JS_GC_OBJ_TYPE_FUNCTION_BYTECODE); js_free_rt(rt, p); } init_list_head(&rt->gc_zero_ref_count_list); } void JS_RunGC(JSRuntime *rt) { /* decrement the reference of the children of each object. mark = 1 after this pass. */ gc_decref(rt); /* keep the GC objects with a non zero refcount and their childs */ gc_scan(rt); /* free the GC objects in a cycle */ gc_free_cycles(rt); } /* Return false if not an object or if the object has already been freed (zombie objects are visible in finalizers when freeing cycles). */ bool JS_IsLiveObject(JSRuntime *rt, JSValueConst obj) { JSObject *p; if (!JS_IsObject(obj)) return false; p = JS_VALUE_GET_OBJ(obj); return !p->free_mark; } /* Compute memory used by various object types */ /* XXX: poor man's approach to handling multiply referenced objects */ typedef struct JSMemoryUsage_helper { double memory_used_count; double str_count; double str_size; int64_t js_func_count; double js_func_size; int64_t js_func_code_size; int64_t js_func_pc2line_count; int64_t js_func_pc2line_size; } JSMemoryUsage_helper; static void compute_value_size(JSValue val, JSMemoryUsage_helper *hp); static void compute_jsstring_size(JSString *str, JSMemoryUsage_helper *hp) { if (!str->atom_type) { /* atoms are handled separately */ double s_ref_count = str->header.ref_count; hp->str_count += 1 / s_ref_count; hp->str_size += ((sizeof(*str) + (str->len << str->is_wide_char) + 1 - str->is_wide_char) / s_ref_count); } } static void compute_bytecode_size(JSFunctionBytecode *b, JSMemoryUsage_helper *hp) { int memory_used_count, js_func_size, i; memory_used_count = 0; js_func_size = sizeof(*b); if (b->vardefs) { js_func_size += (b->arg_count + b->var_count) * sizeof(*b->vardefs); } if (b->cpool) { js_func_size += b->cpool_count * sizeof(*b->cpool); for (i = 0; i < b->cpool_count; i++) { JSValue val = b->cpool[i]; compute_value_size(val, hp); } } if (b->closure_var) { js_func_size += b->closure_var_count * sizeof(*b->closure_var); } if (b->byte_code_buf) { hp->js_func_code_size += b->byte_code_len; } memory_used_count++; js_func_size += b->source_len + 1; if (b->pc2line_len) { memory_used_count++; hp->js_func_pc2line_count += 1; hp->js_func_pc2line_size += b->pc2line_len; } hp->js_func_size += js_func_size; hp->js_func_count += 1; hp->memory_used_count += memory_used_count; } static void compute_value_size(JSValue val, JSMemoryUsage_helper *hp) { switch(JS_VALUE_GET_TAG(val)) { case JS_TAG_STRING: compute_jsstring_size(JS_VALUE_GET_STRING(val), hp); break; case JS_TAG_BIG_INT: /* should track JSBigInt usage */ break; } } void JS_ComputeMemoryUsage(JSRuntime *rt, JSMemoryUsage *s) { struct list_head *el, *el1; int i; JSMemoryUsage_helper mem = { 0 }, *hp = &mem; memset(s, 0, sizeof(*s)); s->malloc_count = rt->malloc_state.malloc_count; s->malloc_size = rt->malloc_state.malloc_size; s->malloc_limit = rt->malloc_state.malloc_limit; s->memory_used_count = 2; /* rt + rt->class_array */ s->memory_used_size = sizeof(JSRuntime) + sizeof(JSClass) * rt->class_count; list_for_each(el, &rt->context_list) { JSContext *ctx = list_entry(el, JSContext, link); JSShape *sh = ctx->array_shape; s->memory_used_count += 2; /* ctx + ctx->class_proto */ s->memory_used_size += sizeof(JSContext) + sizeof(JSValue) * rt->class_count; s->binary_object_count += ctx->binary_object_count; s->binary_object_size += ctx->binary_object_size; /* the hashed shapes are counted separately */ if (sh && !sh->is_hashed) { int hash_size = sh->prop_hash_mask + 1; s->shape_count++; s->shape_size += get_shape_size(hash_size, sh->prop_size); } list_for_each(el1, &ctx->loaded_modules) { JSModuleDef *m = list_entry(el1, JSModuleDef, link); s->memory_used_count += 1; s->memory_used_size += sizeof(*m); if (m->req_module_entries) { s->memory_used_count += 1; s->memory_used_size += m->req_module_entries_count * sizeof(*m->req_module_entries); } if (m->export_entries) { s->memory_used_count += 1; s->memory_used_size += m->export_entries_count * sizeof(*m->export_entries); for (i = 0; i < m->export_entries_count; i++) { JSExportEntry *me = &m->export_entries[i]; if (me->export_type == JS_EXPORT_TYPE_LOCAL && me->u.local.var_ref) { /* potential multiple count */ s->memory_used_count += 1; compute_value_size(me->u.local.var_ref->value, hp); } } } if (m->star_export_entries) { s->memory_used_count += 1; s->memory_used_size += m->star_export_entries_count * sizeof(*m->star_export_entries); } if (m->import_entries) { s->memory_used_count += 1; s->memory_used_size += m->import_entries_count * sizeof(*m->import_entries); } compute_value_size(m->module_ns, hp); compute_value_size(m->func_obj, hp); } } list_for_each(el, &rt->gc_obj_list) { JSGCObjectHeader *gp = list_entry(el, JSGCObjectHeader, link); JSObject *p; JSShape *sh; JSShapeProperty *prs; /* XXX: could count the other GC object types too */ if (gp->gc_obj_type == JS_GC_OBJ_TYPE_FUNCTION_BYTECODE) { compute_bytecode_size((JSFunctionBytecode *)gp, hp); continue; } else if (gp->gc_obj_type != JS_GC_OBJ_TYPE_JS_OBJECT) { continue; } p = (JSObject *)gp; sh = p->shape; s->obj_count++; if (p->prop) { s->memory_used_count++; s->prop_size += sh->prop_size * sizeof(*p->prop); s->prop_count += sh->prop_count; prs = get_shape_prop(sh); for(i = 0; i < sh->prop_count; i++) { JSProperty *pr = &p->prop[i]; if (prs->atom != JS_ATOM_NULL && !(prs->flags & JS_PROP_TMASK)) { compute_value_size(pr->u.value, hp); } prs++; } } /* the hashed shapes are counted separately */ if (!sh->is_hashed) { int hash_size = sh->prop_hash_mask + 1; s->shape_count++; s->shape_size += get_shape_size(hash_size, sh->prop_size); } switch(p->class_id) { case JS_CLASS_ARRAY: /* u.array | length */ case JS_CLASS_ARGUMENTS: /* u.array | length */ s->array_count++; if (p->fast_array) { s->fast_array_count++; if (p->u.array.u.values) { s->memory_used_count++; s->memory_used_size += p->u.array.count * sizeof(*p->u.array.u.values); s->fast_array_elements += p->u.array.count; for (i = 0; i < p->u.array.count; i++) { compute_value_size(p->u.array.u.values[i], hp); } } } break; case JS_CLASS_NUMBER: /* u.object_data */ case JS_CLASS_STRING: /* u.object_data */ case JS_CLASS_BOOLEAN: /* u.object_data */ case JS_CLASS_SYMBOL: /* u.object_data */ case JS_CLASS_DATE: /* u.object_data */ case JS_CLASS_BIG_INT: /* u.object_data */ compute_value_size(p->u.object_data, hp); break; case JS_CLASS_C_FUNCTION: /* u.cfunc */ s->c_func_count++; break; case JS_CLASS_BYTECODE_FUNCTION: /* u.func */ { JSFunctionBytecode *b = p->u.func.function_bytecode; JSVarRef **var_refs = p->u.func.var_refs; /* home_object: object will be accounted for in list scan */ if (var_refs) { s->memory_used_count++; s->js_func_size += b->closure_var_count * sizeof(*var_refs); for (i = 0; i < b->closure_var_count; i++) { if (var_refs[i]) { double ref_count = var_refs[i]->header.ref_count; s->memory_used_count += 1 / ref_count; s->js_func_size += sizeof(*var_refs[i]) / ref_count; /* handle non object closed values */ if (var_refs[i]->pvalue == &var_refs[i]->value) { /* potential multiple count */ compute_value_size(var_refs[i]->value, hp); } } } } } break; case JS_CLASS_BOUND_FUNCTION: /* u.bound_function */ { JSBoundFunction *bf = p->u.bound_function; /* func_obj and this_val are objects */ for (i = 0; i < bf->argc; i++) { compute_value_size(bf->argv[i], hp); } s->memory_used_count += 1; s->memory_used_size += sizeof(*bf) + bf->argc * sizeof(*bf->argv); } break; case JS_CLASS_C_FUNCTION_DATA: /* u.c_function_data_record */ { JSCFunctionDataRecord *fd = p->u.c_function_data_record; if (fd) { for (i = 0; i < fd->data_len; i++) { compute_value_size(fd->data[i], hp); } s->memory_used_count += 1; s->memory_used_size += sizeof(*fd) + fd->data_len * sizeof(*fd->data); } } break; case JS_CLASS_REGEXP: /* u.regexp */ compute_jsstring_size(p->u.regexp.pattern, hp); compute_jsstring_size(p->u.regexp.bytecode, hp); break; case JS_CLASS_FOR_IN_ITERATOR: /* u.for_in_iterator */ { JSForInIterator *it = p->u.for_in_iterator; if (it) { compute_value_size(it->obj, hp); s->memory_used_count += 1; s->memory_used_size += sizeof(*it); } } break; case JS_CLASS_ARRAY_BUFFER: /* u.array_buffer */ case JS_CLASS_SHARED_ARRAY_BUFFER: /* u.array_buffer */ { JSArrayBuffer *abuf = p->u.array_buffer; if (abuf) { s->memory_used_count += 1; s->memory_used_size += sizeof(*abuf); if (abuf->data) { s->memory_used_count += 1; s->memory_used_size += abuf->byte_length; } } } break; case JS_CLASS_GENERATOR: /* u.generator_data */ case JS_CLASS_UINT8C_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_INT8_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_UINT8_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_INT16_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_UINT16_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_INT32_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_UINT32_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_BIG_INT64_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_BIG_UINT64_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_FLOAT16_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_FLOAT32_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_FLOAT64_ARRAY: /* u.typed_array / u.array */ case JS_CLASS_DATAVIEW: /* u.typed_array */ case JS_CLASS_MAP: /* u.map_state */ case JS_CLASS_SET: /* u.map_state */ case JS_CLASS_WEAKMAP: /* u.map_state */ case JS_CLASS_WEAKSET: /* u.map_state */ case JS_CLASS_MAP_ITERATOR: /* u.map_iterator_data */ case JS_CLASS_SET_ITERATOR: /* u.map_iterator_data */ case JS_CLASS_ARRAY_ITERATOR: /* u.array_iterator_data */ case JS_CLASS_STRING_ITERATOR: /* u.array_iterator_data */ case JS_CLASS_PROXY: /* u.proxy_data */ case JS_CLASS_PROMISE: /* u.promise_data */ case JS_CLASS_PROMISE_RESOLVE_FUNCTION: /* u.promise_function_data */ case JS_CLASS_PROMISE_REJECT_FUNCTION: /* u.promise_function_data */ case JS_CLASS_ASYNC_FUNCTION_RESOLVE: /* u.async_function_data */ case JS_CLASS_ASYNC_FUNCTION_REJECT: /* u.async_function_data */ case JS_CLASS_ASYNC_FROM_SYNC_ITERATOR: /* u.async_from_sync_iterator_data */ case JS_CLASS_ASYNC_GENERATOR: /* u.async_generator_data */ /* TODO */ default: /* XXX: class definition should have an opaque block size */ if (p->u.opaque) { s->memory_used_count += 1; } break; } } s->obj_size += s->obj_count * sizeof(JSObject); /* hashed shapes */ s->memory_used_count++; /* rt->shape_hash */ s->memory_used_size += sizeof(rt->shape_hash[0]) * rt->shape_hash_size; for(i = 0; i < rt->shape_hash_size; i++) { JSShape *sh; for(sh = rt->shape_hash[i]; sh != NULL; sh = sh->shape_hash_next) { int hash_size = sh->prop_hash_mask + 1; s->shape_count++; s->shape_size += get_shape_size(hash_size, sh->prop_size); } } /* atoms */ s->memory_used_count += 2; /* rt->atom_array, rt->atom_hash */ s->atom_count = rt->atom_count; s->atom_size = sizeof(rt->atom_array[0]) * rt->atom_size + sizeof(rt->atom_hash[0]) * rt->atom_hash_size; for(i = 0; i < rt->atom_size; i++) { JSAtomStruct *p = rt->atom_array[i]; if (!atom_is_free(p)) { s->atom_size += (sizeof(*p) + (p->len << p->is_wide_char) + 1 - p->is_wide_char); } } s->str_count = round(mem.str_count); s->str_size = round(mem.str_size); s->js_func_count = mem.js_func_count; s->js_func_size = round(mem.js_func_size); s->js_func_code_size = mem.js_func_code_size; s->js_func_pc2line_count = mem.js_func_pc2line_count; s->js_func_pc2line_size = mem.js_func_pc2line_size; s->memory_used_count += round(mem.memory_used_count) + s->atom_count + s->str_count + s->obj_count + s->shape_count + s->js_func_count + s->js_func_pc2line_count; s->memory_used_size += s->atom_size + s->str_size + s->obj_size + s->prop_size + s->shape_size + s->js_func_size + s->js_func_code_size + s->js_func_pc2line_size; } void JS_DumpMemoryUsage(FILE *fp, const JSMemoryUsage *s, JSRuntime *rt) { fprintf(fp, "QuickJS-ng memory usage -- %s version, %d-bit, %s Endian, malloc limit: %"PRId64"\n\n", JS_GetVersion(), (int)sizeof(void *) * 8, is_be() ? "Big" : "Little", s->malloc_limit); if (rt) { static const struct { const char *name; size_t size; } object_types[] = { { "JSRuntime", sizeof(JSRuntime) }, { "JSContext", sizeof(JSContext) }, { "JSObject", sizeof(JSObject) }, { "JSString", sizeof(JSString) }, { "JSFunctionBytecode", sizeof(JSFunctionBytecode) }, }; int i, usage_size_ok = 0; for(i = 0; i < countof(object_types); i++) { unsigned int size = object_types[i].size; void *p = js_malloc_rt(rt, size); if (p) { unsigned int size1 = js_malloc_usable_size_rt(rt, p); if (size1 >= size) { usage_size_ok = 1; fprintf(fp, " %3u + %-2u %s\n", size, size1 - size, object_types[i].name); } js_free_rt(rt, p); } } if (!usage_size_ok) { fprintf(fp, " malloc_usable_size unavailable\n"); } { int obj_classes[JS_CLASS_INIT_COUNT + 1] = { 0 }; int class_id; struct list_head *el; list_for_each(el, &rt->gc_obj_list) { JSGCObjectHeader *gp = list_entry(el, JSGCObjectHeader, link); JSObject *p; if (gp->gc_obj_type == JS_GC_OBJ_TYPE_JS_OBJECT) { p = (JSObject *)gp; obj_classes[min_uint32(p->class_id, JS_CLASS_INIT_COUNT)]++; } } fprintf(fp, "\n" "JSObject classes\n"); if (obj_classes[0]) fprintf(fp, " %5d %2.0d %s\n", obj_classes[0], 0, "none"); for (class_id = 1; class_id < JS_CLASS_INIT_COUNT; class_id++) { if (obj_classes[class_id]) { char buf[ATOM_GET_STR_BUF_SIZE]; fprintf(fp, " %5d %2.0d %s\n", obj_classes[class_id], class_id, JS_AtomGetStrRT(rt, buf, sizeof(buf), js_std_class_def[class_id - 1].class_name)); } } if (obj_classes[JS_CLASS_INIT_COUNT]) fprintf(fp, " %5d %2.0d %s\n", obj_classes[JS_CLASS_INIT_COUNT], 0, "other"); } fprintf(fp, "\n"); } fprintf(fp, "%-20s %8s %8s\n", "NAME", "COUNT", "SIZE"); if (s->malloc_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per block)\n", "memory allocated", s->malloc_count, s->malloc_size, (double)s->malloc_size / s->malloc_count); fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%d overhead, %0.1f average slack)\n", "memory used", s->memory_used_count, s->memory_used_size, MALLOC_OVERHEAD, ((double)(s->malloc_size - s->memory_used_size) / s->memory_used_count)); } if (s->atom_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per atom)\n", "atoms", s->atom_count, s->atom_size, (double)s->atom_size / s->atom_count); } if (s->str_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per string)\n", "strings", s->str_count, s->str_size, (double)s->str_size / s->str_count); } if (s->obj_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per object)\n", "objects", s->obj_count, s->obj_size, (double)s->obj_size / s->obj_count); fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per object)\n", " properties", s->prop_count, s->prop_size, (double)s->prop_count / s->obj_count); fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per shape)\n", " shapes", s->shape_count, s->shape_size, (double)s->shape_size / s->shape_count); } if (s->js_func_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64"\n", "bytecode functions", s->js_func_count, s->js_func_size); fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per function)\n", " bytecode", s->js_func_count, s->js_func_code_size, (double)s->js_func_code_size / s->js_func_count); if (s->js_func_pc2line_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per function)\n", " pc2line", s->js_func_pc2line_count, s->js_func_pc2line_size, (double)s->js_func_pc2line_size / s->js_func_pc2line_count); } } if (s->c_func_count) { fprintf(fp, "%-20s %8"PRId64"\n", "C functions", s->c_func_count); } if (s->array_count) { fprintf(fp, "%-20s %8"PRId64"\n", "arrays", s->array_count); if (s->fast_array_count) { fprintf(fp, "%-20s %8"PRId64"\n", " fast arrays", s->fast_array_count); fprintf(fp, "%-20s %8"PRId64" %8"PRId64" (%0.1f per fast array)\n", " elements", s->fast_array_elements, s->fast_array_elements * (int)sizeof(JSValue), (double)s->fast_array_elements / s->fast_array_count); } } if (s->binary_object_count) { fprintf(fp, "%-20s %8"PRId64" %8"PRId64"\n", "binary objects", s->binary_object_count, s->binary_object_size); } } JSValue JS_GetGlobalObject(JSContext *ctx) { return js_dup(ctx->global_obj); } /* WARNING: obj is freed */ JSValue JS_Throw(JSContext *ctx, JSValue obj) { JSRuntime *rt = ctx->rt; JS_FreeValue(ctx, rt->current_exception); rt->current_exception = obj; return JS_EXCEPTION; } /* return the pending exception (cannot be called twice). */ JSValue JS_GetException(JSContext *ctx) { JSValue val; JSRuntime *rt = ctx->rt; val = rt->current_exception; rt->current_exception = JS_UNINITIALIZED; return val; } bool JS_HasException(JSContext *ctx) { return !JS_IsUninitialized(ctx->rt->current_exception); } static void dbuf_put_leb128(DynBuf *s, uint32_t v) { uint32_t a; for(;;) { a = v & 0x7f; v >>= 7; if (v != 0) { dbuf_putc(s, a | 0x80); } else { dbuf_putc(s, a); break; } } } static void dbuf_put_sleb128(DynBuf *s, int32_t v1) { uint32_t v = v1; dbuf_put_leb128(s, (2 * v) ^ -(v >> 31)); } static int get_leb128(uint32_t *pval, const uint8_t *buf, const uint8_t *buf_end) { const uint8_t *ptr = buf; uint32_t v, a, i; v = 0; for(i = 0; i < 5; i++) { if (unlikely(ptr >= buf_end)) break; a = *ptr++; v |= (a & 0x7f) << (i * 7); if (!(a & 0x80)) { *pval = v; return ptr - buf; } } *pval = 0; return -1; } static int get_sleb128(int32_t *pval, const uint8_t *buf, const uint8_t *buf_end) { int ret; uint32_t val; ret = get_leb128(&val, buf, buf_end); if (ret < 0) { *pval = 0; return -1; } *pval = (val >> 1) ^ -(val & 1); return ret; } static int find_line_num(JSContext *ctx, JSFunctionBytecode *b, uint32_t pc_value, int *col) { const uint8_t *p_end, *p; int new_line_num, new_col_num, line_num, col_num, pc, v, ret; unsigned int op; *col = 1; p = b->pc2line_buf; if (!p) goto fail; p_end = p + b->pc2line_len; pc = 0; line_num = b->line_num; col_num = b->col_num; while (p < p_end) { op = *p++; if (op == 0) { uint32_t val; ret = get_leb128(&val, p, p_end); if (ret < 0) goto fail; pc += val; p += ret; ret = get_sleb128(&v, p, p_end); if (ret < 0) goto fail; p += ret; new_line_num = line_num + v; } else { op -= PC2LINE_OP_FIRST; pc += (op / PC2LINE_RANGE); new_line_num = line_num + (op % PC2LINE_RANGE) + PC2LINE_BASE; } ret = get_sleb128(&v, p, p_end); if (ret < 0) goto fail; p += ret; new_col_num = col_num + v; if (pc_value < pc) break; line_num = new_line_num; col_num = new_col_num; } *col = col_num; return line_num; fail: /* should never happen */ return b->line_num; } /* in order to avoid executing arbitrary code during the stack trace generation, we only look at simple 'name' properties containing a string. */ static const char *get_func_name(JSContext *ctx, JSValueConst func) { JSProperty *pr; JSShapeProperty *prs; JSValue val; if (JS_VALUE_GET_TAG(func) != JS_TAG_OBJECT) return NULL; prs = find_own_property(&pr, JS_VALUE_GET_OBJ(func), JS_ATOM_name); if (!prs) return NULL; if ((prs->flags & JS_PROP_TMASK) != JS_PROP_NORMAL) return NULL; val = pr->u.value; if (JS_VALUE_GET_TAG(val) != JS_TAG_STRING) return NULL; return JS_ToCString(ctx, val); } /* Note: it is important that no exception is returned by this function */ static bool can_add_backtrace(JSValueConst obj) { JSObject *p; if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(obj); if (p->class_id != JS_CLASS_ERROR) return false; if (find_own_property1(p, JS_ATOM_stack)) return false; return true; } #define JS_BACKTRACE_FLAG_SKIP_FIRST_LEVEL (1 << 0) /* only taken into account if filename is provided */ #define JS_BACKTRACE_FLAG_SINGLE_LEVEL (1 << 1) #define JS_BACKTRACE_FLAG_FILTER_FUNC (1 << 2) /* if filename != NULL, an additional level is added with the filename and line number information (used for parse error). */ static void build_backtrace(JSContext *ctx, JSValueConst error_val, JSValueConst filter_func, const char *filename, int line_num, int col_num, int backtrace_flags) { JSStackFrame *sf, *sf_start; JSValue stack, prepare, saved_exception; DynBuf dbuf; const char *func_name_str; const char *str1; JSObject *p; JSFunctionBytecode *b; bool backtrace_barrier, has_prepare, has_filter_func; JSRuntime *rt; JSCallSiteData csd[64]; uint32_t i; double d; int stack_trace_limit; rt = ctx->rt; if (rt->in_build_stack_trace) return; rt->in_build_stack_trace = true; // Save exception because conversion to double may fail. saved_exception = JS_GetException(ctx); // Extract stack trace limit. // Ignore error since it sets d to NAN anyway. // coverity[check_return] JS_ToFloat64(ctx, &d, ctx->error_stack_trace_limit); if (isnan(d) || d < 0.0) stack_trace_limit = 0; else if (d > INT32_MAX) stack_trace_limit = INT32_MAX; else stack_trace_limit = fabs(d); // Restore current exception. JS_Throw(ctx, saved_exception); saved_exception = JS_UNINITIALIZED; stack_trace_limit = min_int(stack_trace_limit, countof(csd)); stack_trace_limit = max_int(stack_trace_limit, 0); has_prepare = false; has_filter_func = backtrace_flags & JS_BACKTRACE_FLAG_FILTER_FUNC; i = 0; if (!JS_IsNull(ctx->error_ctor)) { prepare = js_dup(ctx->error_prepare_stack); has_prepare = JS_IsFunction(ctx, prepare); } if (has_prepare) { saved_exception = JS_GetException(ctx); if (stack_trace_limit == 0) goto done; if (filename) js_new_callsite_data2(ctx, &csd[i++], filename, line_num, col_num); } else { js_dbuf_init(ctx, &dbuf); if (stack_trace_limit == 0) goto done; if (filename) { i++; dbuf_printf(&dbuf, " at %s", filename); if (line_num != -1) dbuf_printf(&dbuf, ":%d:%d", line_num, col_num); dbuf_putc(&dbuf, '\n'); } } if (filename && (backtrace_flags & JS_BACKTRACE_FLAG_SINGLE_LEVEL)) goto done; sf_start = rt->current_stack_frame; /* Find the frame we want to start from. Note that when a filter is used the filter function will be the first, but we also specify we want to skip the first one. */ if (has_filter_func) { for (sf = sf_start; sf != NULL && i < stack_trace_limit; sf = sf->prev_frame) { if (js_same_value(ctx, sf->cur_func, filter_func)) { sf_start = sf; break; } } } for (sf = sf_start; sf != NULL && i < stack_trace_limit; sf = sf->prev_frame) { if (backtrace_flags & JS_BACKTRACE_FLAG_SKIP_FIRST_LEVEL) { backtrace_flags &= ~JS_BACKTRACE_FLAG_SKIP_FIRST_LEVEL; continue; } p = JS_VALUE_GET_OBJ(sf->cur_func); b = NULL; backtrace_barrier = false; if (js_class_has_bytecode(p->class_id)) { b = p->u.func.function_bytecode; backtrace_barrier = b->backtrace_barrier; } if (has_prepare) { js_new_callsite_data(ctx, &csd[i], sf); } else { /* func_name_str is UTF-8 encoded if needed */ func_name_str = get_func_name(ctx, sf->cur_func); if (!func_name_str || func_name_str[0] == '\0') str1 = ""; else str1 = func_name_str; dbuf_printf(&dbuf, " at %s", str1); JS_FreeCString(ctx, func_name_str); if (b && sf->cur_pc) { const char *atom_str; int line_num1, col_num1; uint32_t pc; pc = sf->cur_pc - b->byte_code_buf - 1; line_num1 = find_line_num(ctx, b, pc, &col_num1); atom_str = b->filename ? JS_AtomToCString(ctx, b->filename) : NULL; dbuf_printf(&dbuf, " (%s", atom_str ? atom_str : ""); JS_FreeCString(ctx, atom_str); if (line_num1 != -1) dbuf_printf(&dbuf, ":%d:%d", line_num1, col_num1); dbuf_putc(&dbuf, ')'); } else if (b) { // FIXME(bnoordhuis) Missing `sf->cur_pc = pc` in bytecode // handler in JS_CallInternal. Almost never user observable // except with intercepting JS proxies that throw exceptions. dbuf_printf(&dbuf, " (missing)"); } else { dbuf_printf(&dbuf, " (native)"); } dbuf_putc(&dbuf, '\n'); } i++; /* stop backtrace if JS_EVAL_FLAG_BACKTRACE_BARRIER was used */ if (backtrace_barrier) break; } done: if (has_prepare) { int j = 0, k; stack = JS_NewArray(ctx); if (JS_IsException(stack)) { stack = JS_NULL; } else { for (; j < i; j++) { JSValue v = js_new_callsite(ctx, &csd[j]); if (JS_IsException(v)) break; if (JS_DefinePropertyValueUint32(ctx, stack, j, v, JS_PROP_C_W_E) < 0) { JS_FreeValue(ctx, v); break; } } } // Clear the csd's we didn't use in case of error. for (k = j; k < i; k++) { JS_FreeValue(ctx, csd[k].filename); JS_FreeValue(ctx, csd[k].func); JS_FreeValue(ctx, csd[k].func_name); } JSValueConst args[] = { error_val, stack, }; JSValue stack2 = JS_Call(ctx, prepare, ctx->error_ctor, countof(args), args); JS_FreeValue(ctx, stack); if (JS_IsException(stack2)) stack = JS_NULL; else stack = stack2; JS_FreeValue(ctx, prepare); JS_Throw(ctx, saved_exception); } else { if (dbuf_error(&dbuf)) stack = JS_NULL; else stack = JS_NewStringLen(ctx, (char *)dbuf.buf, dbuf.size); dbuf_free(&dbuf); } if (JS_IsUndefined(ctx->error_back_trace)) ctx->error_back_trace = js_dup(stack); if (has_filter_func || can_add_backtrace(error_val)) { JS_DefinePropertyValue(ctx, error_val, JS_ATOM_stack, stack, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); } else { JS_FreeValue(ctx, stack); } rt->in_build_stack_trace = false; } JSValue JS_NewError(JSContext *ctx) { JSValue obj = JS_NewObjectClass(ctx, JS_CLASS_ERROR); if (JS_IsException(obj)) return JS_EXCEPTION; build_backtrace(ctx, obj, JS_UNDEFINED, NULL, 0, 0, 0); return obj; } static JSValue JS_MakeError(JSContext *ctx, JSErrorEnum error_num, const char *message, bool add_backtrace) { JSValue obj, msg; if (error_num == JS_PLAIN_ERROR) { obj = JS_NewObjectClass(ctx, JS_CLASS_ERROR); } else { obj = JS_NewObjectProtoClass(ctx, ctx->native_error_proto[error_num], JS_CLASS_ERROR); } if (JS_IsException(obj)) return JS_EXCEPTION; msg = JS_NewString(ctx, message); if (JS_IsException(msg)) msg = JS_NewString(ctx, "Invalid error message"); if (!JS_IsException(msg)) { JS_DefinePropertyValue(ctx, obj, JS_ATOM_message, msg, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); } if (add_backtrace) build_backtrace(ctx, obj, JS_UNDEFINED, NULL, 0, 0, 0); return obj; } /* fmt and arguments may be pure ASCII or UTF-8 encoded contents */ static JSValue JS_PRINTF_FORMAT_ATTR(4, 0) JS_ThrowError2(JSContext *ctx, JSErrorEnum error_num, bool add_backtrace, JS_PRINTF_FORMAT const char *fmt, va_list ap) { char buf[256]; JSValue obj; vsnprintf(buf, sizeof(buf), fmt, ap); obj = JS_MakeError(ctx, error_num, buf, add_backtrace); if (unlikely(JS_IsException(obj))) { /* out of memory: throw JS_NULL to avoid recursing */ obj = JS_NULL; } return JS_Throw(ctx, obj); } static JSValue JS_PRINTF_FORMAT_ATTR(3, 0) JS_ThrowError(JSContext *ctx, JSErrorEnum error_num, JS_PRINTF_FORMAT const char *fmt, va_list ap) { JSRuntime *rt = ctx->rt; JSStackFrame *sf; bool add_backtrace; /* the backtrace is added later if called from a bytecode function */ sf = rt->current_stack_frame; add_backtrace = !rt->in_out_of_memory && (!sf || (JS_GetFunctionBytecode(sf->cur_func) == NULL)); return JS_ThrowError2(ctx, error_num, add_backtrace, fmt, ap); } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowPlainError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_PLAIN_ERROR, fmt, ap); va_end(ap); return val; } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowSyntaxError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_SYNTAX_ERROR, fmt, ap); va_end(ap); return val; } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowTypeError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_TYPE_ERROR, fmt, ap); va_end(ap); return val; } static int JS_PRINTF_FORMAT_ATTR(3, 4) JS_ThrowTypeErrorOrFalse(JSContext *ctx, int flags, JS_PRINTF_FORMAT const char *fmt, ...) { va_list ap; if ((flags & JS_PROP_THROW) || ((flags & JS_PROP_THROW_STRICT) && is_strict_mode(ctx))) { va_start(ap, fmt); JS_ThrowError(ctx, JS_TYPE_ERROR, fmt, ap); va_end(ap); return -1; } else { return false; } } #ifdef __GNUC__ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wformat-nonliteral" #endif // __GNUC__ static JSValue JS_ThrowTypeErrorAtom(JSContext *ctx, const char *fmt, JSAtom atom) { char buf[ATOM_GET_STR_BUF_SIZE]; JS_AtomGetStr(ctx, buf, sizeof(buf), atom); return JS_ThrowTypeError(ctx, fmt, buf); } static JSValue JS_ThrowSyntaxErrorAtom(JSContext *ctx, const char *fmt, JSAtom atom) { char buf[ATOM_GET_STR_BUF_SIZE]; JS_AtomGetStr(ctx, buf, sizeof(buf), atom); return JS_ThrowSyntaxError(ctx, fmt, buf); } #ifdef __GNUC__ #pragma GCC diagnostic pop // ignored "-Wformat-nonliteral" #endif // __GNUC__ static int JS_ThrowTypeErrorReadOnly(JSContext *ctx, int flags, JSAtom atom) { if ((flags & JS_PROP_THROW) || ((flags & JS_PROP_THROW_STRICT) && is_strict_mode(ctx))) { JS_ThrowTypeErrorAtom(ctx, "'%s' is read-only", atom); return -1; } else { return false; } } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowReferenceError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_REFERENCE_ERROR, fmt, ap); va_end(ap); return val; } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowRangeError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_RANGE_ERROR, fmt, ap); va_end(ap); return val; } JSValue JS_PRINTF_FORMAT_ATTR(2, 3) JS_ThrowInternalError(JSContext *ctx, JS_PRINTF_FORMAT const char *fmt, ...) { JSValue val; va_list ap; va_start(ap, fmt); val = JS_ThrowError(ctx, JS_INTERNAL_ERROR, fmt, ap); va_end(ap); return val; } JSValue JS_ThrowOutOfMemory(JSContext *ctx) { JSRuntime *rt = ctx->rt; if (!rt->in_out_of_memory) { rt->in_out_of_memory = true; JS_ThrowInternalError(ctx, "out of memory"); rt->in_out_of_memory = false; } return JS_EXCEPTION; } static JSValue JS_ThrowStackOverflow(JSContext *ctx) { return JS_ThrowRangeError(ctx, "Maximum call stack size exceeded"); } static JSValue JS_ThrowTypeErrorNotAFunction(JSContext *ctx) { return JS_ThrowTypeError(ctx, "not a function"); } static JSValue JS_ThrowTypeErrorNotAnObject(JSContext *ctx) { return JS_ThrowTypeError(ctx, "not an object"); } static JSValue JS_ThrowTypeErrorNotASymbol(JSContext *ctx) { return JS_ThrowTypeError(ctx, "not a symbol"); } static JSValue JS_ThrowReferenceErrorNotDefined(JSContext *ctx, JSAtom name) { char buf[ATOM_GET_STR_BUF_SIZE]; return JS_ThrowReferenceError(ctx, "%s is not defined", JS_AtomGetStr(ctx, buf, sizeof(buf), name)); } static JSValue JS_ThrowReferenceErrorUninitialized(JSContext *ctx, JSAtom name) { char buf[ATOM_GET_STR_BUF_SIZE]; return JS_ThrowReferenceError(ctx, "%s is not initialized", name == JS_ATOM_NULL ? "lexical variable" : JS_AtomGetStr(ctx, buf, sizeof(buf), name)); } static JSValue JS_ThrowReferenceErrorUninitialized2(JSContext *ctx, JSFunctionBytecode *b, int idx, bool is_ref) { JSAtom atom = JS_ATOM_NULL; if (is_ref) { atom = b->closure_var[idx].var_name; } else { /* not present if the function is stripped and contains no eval() */ if (b->vardefs) atom = b->vardefs[b->arg_count + idx].var_name; } return JS_ThrowReferenceErrorUninitialized(ctx, atom); } static JSValue JS_ThrowTypeErrorInvalidClass(JSContext *ctx, int class_id) { JSRuntime *rt = ctx->rt; JSAtom name; name = rt->class_array[class_id].class_name; return JS_ThrowTypeErrorAtom(ctx, "%s object expected", name); } static no_inline __exception int __js_poll_interrupts(JSContext *ctx) { JSRuntime *rt = ctx->rt; ctx->interrupt_counter = JS_INTERRUPT_COUNTER_INIT; if (rt->interrupt_handler) { if (rt->interrupt_handler(rt, rt->interrupt_opaque)) { /* XXX: should set a specific flag to avoid catching */ JS_ThrowInternalError(ctx, "interrupted"); js_set_uncatchable_error(ctx, ctx->rt->current_exception, true); return -1; } } return 0; } static inline __exception int js_poll_interrupts(JSContext *ctx) { if (unlikely(--ctx->interrupt_counter <= 0)) { return __js_poll_interrupts(ctx); } else { return 0; } } /* return -1 (exception) or true/false */ static int JS_SetPrototypeInternal(JSContext *ctx, JSValueConst obj, JSValueConst proto_val, bool throw_flag) { JSObject *proto, *p, *p1; JSShape *sh; if (throw_flag) { if (JS_VALUE_GET_TAG(obj) == JS_TAG_NULL || JS_VALUE_GET_TAG(obj) == JS_TAG_UNDEFINED) goto not_obj; } else { if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) goto not_obj; } p = JS_VALUE_GET_OBJ(obj); if (JS_VALUE_GET_TAG(proto_val) != JS_TAG_OBJECT) { if (JS_VALUE_GET_TAG(proto_val) != JS_TAG_NULL) { not_obj: JS_ThrowTypeErrorNotAnObject(ctx); return -1; } proto = NULL; } else { proto = JS_VALUE_GET_OBJ(proto_val); } if (throw_flag && JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) return true; if (unlikely(p->class_id == JS_CLASS_PROXY)) return js_proxy_setPrototypeOf(ctx, obj, proto_val, throw_flag); sh = p->shape; if (sh->proto == proto) return true; if (p == JS_VALUE_GET_OBJ(ctx->class_proto[JS_CLASS_OBJECT])) { if (throw_flag) { JS_ThrowTypeError(ctx, "'Immutable prototype object \'Object.prototype\' cannot have their prototype set'"); return -1; } return false; } if (!p->extensible) { if (throw_flag) { JS_ThrowTypeError(ctx, "object is not extensible"); return -1; } else { return false; } } if (proto) { /* check if there is a cycle */ p1 = proto; do { if (p1 == p) { if (throw_flag) { JS_ThrowTypeError(ctx, "circular prototype chain"); return -1; } else { return false; } } /* Note: for Proxy objects, proto is NULL */ p1 = p1->shape->proto; } while (p1 != NULL); js_dup(proto_val); } if (js_shape_prepare_update(ctx, p, NULL)) return -1; sh = p->shape; if (sh->proto) JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, sh->proto)); sh->proto = proto; return true; } /* return -1 (exception) or true/false */ int JS_SetPrototype(JSContext *ctx, JSValueConst obj, JSValue proto_val) { return JS_SetPrototypeInternal(ctx, obj, proto_val, true); } /* Only works for primitive types, otherwise return JS_NULL. */ static JSValueConst JS_GetPrototypePrimitive(JSContext *ctx, JSValueConst val) { JSValue ret; switch(JS_VALUE_GET_NORM_TAG(val)) { case JS_TAG_BIG_INT: ret = ctx->class_proto[JS_CLASS_BIG_INT]; break; case JS_TAG_INT: case JS_TAG_FLOAT64: ret = ctx->class_proto[JS_CLASS_NUMBER]; break; case JS_TAG_BOOL: ret = ctx->class_proto[JS_CLASS_BOOLEAN]; break; case JS_TAG_STRING: ret = ctx->class_proto[JS_CLASS_STRING]; break; case JS_TAG_SYMBOL: ret = ctx->class_proto[JS_CLASS_SYMBOL]; break; case JS_TAG_OBJECT: case JS_TAG_NULL: case JS_TAG_UNDEFINED: default: ret = JS_NULL; break; } return ret; } /* Return an Object, JS_NULL or JS_EXCEPTION in case of Proxy object. */ JSValue JS_GetPrototype(JSContext *ctx, JSValueConst obj) { JSValue val; if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { JSObject *p; p = JS_VALUE_GET_OBJ(obj); if (unlikely(p->class_id == JS_CLASS_PROXY)) { val = js_proxy_getPrototypeOf(ctx, obj); } else { p = p->shape->proto; if (!p) val = JS_NULL; else val = js_dup(JS_MKPTR(JS_TAG_OBJECT, p)); } } else { val = js_dup(JS_GetPrototypePrimitive(ctx, obj)); } return val; } static JSValue JS_GetPrototypeFree(JSContext *ctx, JSValue obj) { JSValue obj1; obj1 = JS_GetPrototype(ctx, obj); JS_FreeValue(ctx, obj); return obj1; } int JS_GetLength(JSContext *ctx, JSValueConst obj, int64_t *pres) { return js_get_length64(ctx, pres, obj); } int JS_SetLength(JSContext *ctx, JSValueConst obj, int64_t len) { return js_set_length64(ctx, obj, len); } /* return true, false or (-1) in case of exception */ static int JS_OrdinaryIsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj) { JSValue obj_proto; JSObject *proto; const JSObject *p, *proto1; int ret; if (!JS_IsFunction(ctx, obj)) return false; p = JS_VALUE_GET_OBJ(obj); if (p->class_id == JS_CLASS_BOUND_FUNCTION) { JSBoundFunction *s = p->u.bound_function; return JS_IsInstanceOf(ctx, val, s->func_obj); } /* Only explicitly boxed values are instances of constructors */ if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; obj_proto = JS_GetProperty(ctx, obj, JS_ATOM_prototype); if (JS_VALUE_GET_TAG(obj_proto) != JS_TAG_OBJECT) { if (!JS_IsException(obj_proto)) JS_ThrowTypeError(ctx, "operand 'prototype' property is not an object"); ret = -1; goto done; } proto = JS_VALUE_GET_OBJ(obj_proto); p = JS_VALUE_GET_OBJ(val); for(;;) { proto1 = p->shape->proto; if (!proto1) { /* slow case if proxy in the prototype chain */ if (unlikely(p->class_id == JS_CLASS_PROXY)) { JSValue obj1; obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, (JSObject *)p)); for(;;) { obj1 = JS_GetPrototypeFree(ctx, obj1); if (JS_IsException(obj1)) { ret = -1; break; } if (JS_IsNull(obj1)) { ret = false; break; } if (proto == JS_VALUE_GET_OBJ(obj1)) { JS_FreeValue(ctx, obj1); ret = true; break; } /* must check for timeout to avoid infinite loop */ if (js_poll_interrupts(ctx)) { JS_FreeValue(ctx, obj1); ret = -1; break; } } } else { ret = false; } break; } p = proto1; if (proto == p) { ret = true; break; } } done: JS_FreeValue(ctx, obj_proto); return ret; } /* return true, false or (-1) in case of exception */ int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj) { JSValue method; if (!JS_IsObject(obj)) goto fail; method = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_hasInstance); if (JS_IsException(method)) return -1; if (!JS_IsNull(method) && !JS_IsUndefined(method)) { JSValue ret; ret = JS_CallFree(ctx, method, obj, 1, &val); return JS_ToBoolFree(ctx, ret); } /* legacy case */ if (!JS_IsFunction(ctx, obj)) { fail: JS_ThrowTypeError(ctx, "invalid 'instanceof' right operand"); return -1; } return JS_OrdinaryIsInstanceOf(ctx, val, obj); } /* return the value associated to the autoinit property or an exception */ typedef JSValue JSAutoInitFunc(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque); static JSAutoInitFunc *js_autoinit_func_table[] = { js_instantiate_prototype, /* JS_AUTOINIT_ID_PROTOTYPE */ js_module_ns_autoinit, /* JS_AUTOINIT_ID_MODULE_NS */ JS_InstantiateFunctionListItem2, /* JS_AUTOINIT_ID_PROP */ }; /* warning: 'prs' is reallocated after it */ static int JS_AutoInitProperty(JSContext *ctx, JSObject *p, JSAtom prop, JSProperty *pr, JSShapeProperty *prs) { JSValue val; JSContext *realm; JSAutoInitFunc *func; if (js_shape_prepare_update(ctx, p, &prs)) return -1; realm = js_autoinit_get_realm(pr); func = js_autoinit_func_table[js_autoinit_get_id(pr)]; /* 'func' shall not modify the object properties 'pr' */ val = func(realm, p, prop, pr->u.init.opaque); js_autoinit_free(ctx->rt, pr); prs->flags &= ~JS_PROP_TMASK; pr->u.value = JS_UNDEFINED; if (JS_IsException(val)) return -1; pr->u.value = val; return 0; } static JSValue JS_GetPropertyInternal(JSContext *ctx, JSValueConst obj, JSAtom prop, JSValueConst this_obj, bool throw_ref_error) { JSObject *p; JSProperty *pr; JSShapeProperty *prs; uint32_t tag, proto_depth; proto_depth = 0; tag = JS_VALUE_GET_TAG(obj); if (unlikely(tag != JS_TAG_OBJECT)) { switch(tag) { case JS_TAG_NULL: return JS_ThrowTypeErrorAtom(ctx, "cannot read property '%s' of null", prop); case JS_TAG_UNDEFINED: return JS_ThrowTypeErrorAtom(ctx, "cannot read property '%s' of undefined", prop); case JS_TAG_EXCEPTION: return JS_EXCEPTION; case JS_TAG_STRING: { JSString *p1 = JS_VALUE_GET_STRING(obj); if (__JS_AtomIsTaggedInt(prop)) { uint32_t idx, ch; idx = __JS_AtomToUInt32(prop); if (idx < p1->len) { ch = string_get(p1, idx); return js_new_string_char(ctx, ch); } } else if (prop == JS_ATOM_length) { return js_int32(p1->len); } } break; default: break; } /* cannot raise an exception */ p = JS_VALUE_GET_OBJ(JS_GetPrototypePrimitive(ctx, obj)); if (!p) return JS_UNDEFINED; } else { p = JS_VALUE_GET_OBJ(obj); } for(;;) { prs = find_own_property(&pr, p, prop); if (prs) { /* found */ if (unlikely(prs->flags & JS_PROP_TMASK)) { if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { if (unlikely(!pr->u.getset.getter)) { return JS_UNDEFINED; } else { JSValue func = JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.getter); /* Note: the field could be removed in the getter */ func = js_dup(func); return JS_CallFree(ctx, func, this_obj, 0, NULL); } } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { JSValue val = *pr->u.var_ref->pvalue; if (unlikely(JS_IsUninitialized(val))) return JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return js_dup(val); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* Instantiate property and retry */ if (JS_AutoInitProperty(ctx, p, prop, pr, prs)) return JS_EXCEPTION; continue; } } else { return js_dup(pr->u.value); } } if (unlikely(p->is_exotic)) { /* exotic behaviors */ if (p->fast_array) { if (__JS_AtomIsTaggedInt(prop)) { uint32_t idx = __JS_AtomToUInt32(prop); if (idx < p->u.array.count) { /* we avoid duplicating the code */ return JS_GetPropertyUint32(ctx, JS_MKPTR(JS_TAG_OBJECT, p), idx); } else if (is_typed_array(p->class_id)) { return JS_UNDEFINED; } } else if (is_typed_array(p->class_id)) { int ret; ret = JS_AtomIsNumericIndex(ctx, prop); if (ret != 0) { if (ret < 0) return JS_EXCEPTION; return JS_UNDEFINED; } } } else { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em) { if (em->get_property) { JSValue obj1, retval; /* XXX: should pass throw_ref_error */ /* Note: if 'p' is a prototype, it can be freed in the called function */ obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, p)); retval = em->get_property(ctx, obj1, prop, this_obj); JS_FreeValue(ctx, obj1); return retval; } if (em->get_own_property) { JSPropertyDescriptor desc; int ret; JSValue obj1; /* Note: if 'p' is a prototype, it can be freed in the called function */ obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, p)); ret = em->get_own_property(ctx, &desc, obj1, prop); JS_FreeValue(ctx, obj1); if (ret < 0) return JS_EXCEPTION; if (ret) { if (desc.flags & JS_PROP_GETSET) { JS_FreeValue(ctx, desc.setter); return JS_CallFree(ctx, desc.getter, this_obj, 0, NULL); } else { return desc.value; } } } } } } proto_depth++; p = p->shape->proto; if (!p) break; } if (unlikely(throw_ref_error)) { return JS_ThrowReferenceErrorNotDefined(ctx, prop); } else { return JS_UNDEFINED; } } JSValue JS_GetProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop) { return JS_GetPropertyInternal(ctx, this_obj, prop, this_obj, false); } static JSValue JS_ThrowTypeErrorPrivateNotFound(JSContext *ctx, JSAtom atom) { return JS_ThrowTypeErrorAtom(ctx, "private class field '%s' does not exist", atom); } /* Private fields can be added even on non extensible objects or Proxies */ static int JS_DefinePrivateField(JSContext *ctx, JSValueConst obj, JSValue name, JSValue val) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; JSAtom prop; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) { JS_ThrowTypeErrorNotAnObject(ctx); goto fail; } /* safety check */ if (unlikely(JS_VALUE_GET_TAG(name) != JS_TAG_SYMBOL)) { JS_ThrowTypeErrorNotASymbol(ctx); goto fail; } prop = js_symbol_to_atom(ctx, name); p = JS_VALUE_GET_OBJ(obj); prs = find_own_property(&pr, p, prop); if (prs) { JS_ThrowTypeErrorAtom(ctx, "private class field '%s' already exists", prop); goto fail; } pr = add_property(ctx, p, prop, JS_PROP_C_W_E); if (unlikely(!pr)) { fail: JS_FreeValue(ctx, val); return -1; } pr->u.value = val; return 0; } static JSValue JS_GetPrivateField(JSContext *ctx, JSValueConst obj, JSValueConst name) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; JSAtom prop; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) return JS_ThrowTypeErrorNotAnObject(ctx); /* safety check */ if (unlikely(JS_VALUE_GET_TAG(name) != JS_TAG_SYMBOL)) return JS_ThrowTypeErrorNotASymbol(ctx); prop = js_symbol_to_atom(ctx, name); p = JS_VALUE_GET_OBJ(obj); prs = find_own_property(&pr, p, prop); if (!prs) { JS_ThrowTypeErrorPrivateNotFound(ctx, prop); return JS_EXCEPTION; } return js_dup(pr->u.value); } static int JS_SetPrivateField(JSContext *ctx, JSValueConst obj, JSValueConst name, JSValue val) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; JSAtom prop; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) { JS_ThrowTypeErrorNotAnObject(ctx); goto fail; } /* safety check */ if (unlikely(JS_VALUE_GET_TAG(name) != JS_TAG_SYMBOL)) { JS_ThrowTypeErrorNotASymbol(ctx); goto fail; } prop = js_symbol_to_atom(ctx, name); p = JS_VALUE_GET_OBJ(obj); prs = find_own_property(&pr, p, prop); if (!prs) { JS_ThrowTypeErrorPrivateNotFound(ctx, prop); fail: JS_FreeValue(ctx, val); return -1; } set_value(ctx, &pr->u.value, val); return 0; } /* add a private brand field to 'home_obj' if not already present and if obj is != null add a private brand to it */ static int JS_AddBrand(JSContext *ctx, JSValueConst obj, JSValueConst home_obj) { JSObject *p, *p1; JSShapeProperty *prs; JSProperty *pr; JSValue brand; JSAtom brand_atom; if (unlikely(JS_VALUE_GET_TAG(home_obj) != JS_TAG_OBJECT)) { JS_ThrowTypeErrorNotAnObject(ctx); return -1; } p = JS_VALUE_GET_OBJ(home_obj); prs = find_own_property(&pr, p, JS_ATOM_Private_brand); if (!prs) { /* if the brand is not present, add it */ brand = JS_NewSymbolFromAtom(ctx, JS_ATOM_brand, JS_ATOM_TYPE_PRIVATE); if (JS_IsException(brand)) return -1; pr = add_property(ctx, p, JS_ATOM_Private_brand, JS_PROP_C_W_E); if (!pr) { JS_FreeValue(ctx, brand); return -1; } pr->u.value = js_dup(brand); } else { brand = js_dup(pr->u.value); } brand_atom = js_symbol_to_atom(ctx, brand); if (JS_IsObject(obj)) { p1 = JS_VALUE_GET_OBJ(obj); prs = find_own_property(&pr, p1, brand_atom); if (unlikely(prs)) { JS_FreeAtom(ctx, brand_atom); JS_ThrowTypeError(ctx, "private method is already present"); return -1; } pr = add_property(ctx, p1, brand_atom, JS_PROP_C_W_E); JS_FreeAtom(ctx, brand_atom); if (!pr) return -1; pr->u.value = JS_UNDEFINED; } else { JS_FreeAtom(ctx, brand_atom); } return 0; } /* return a boolean telling if the brand of the home object of 'func' is present on 'obj' or -1 in case of exception */ static int JS_CheckBrand(JSContext *ctx, JSValue obj, JSValue func) { JSObject *p, *p1, *home_obj; JSShapeProperty *prs; JSProperty *pr; JSValue brand; /* get the home object of 'func' */ if (unlikely(JS_VALUE_GET_TAG(func) != JS_TAG_OBJECT)) goto not_obj; p1 = JS_VALUE_GET_OBJ(func); if (!js_class_has_bytecode(p1->class_id)) goto not_obj; home_obj = p1->u.func.home_object; if (!home_obj) goto not_obj; prs = find_own_property(&pr, home_obj, JS_ATOM_Private_brand); if (!prs) { JS_ThrowTypeError(ctx, "expecting private field"); return -1; } brand = pr->u.value; /* safety check */ if (unlikely(JS_VALUE_GET_TAG(brand) != JS_TAG_SYMBOL)) goto not_obj; /* get the brand array of 'obj' */ if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) { not_obj: JS_ThrowTypeErrorNotAnObject(ctx); return -1; } p = JS_VALUE_GET_OBJ(obj); prs = find_own_property(&pr, p, js_symbol_to_atom(ctx, brand)); return (prs != NULL); } static uint32_t js_string_obj_get_length(JSContext *ctx, JSValueConst obj) { JSObject *p; JSString *p1; uint32_t len = 0; /* This is a class exotic method: obj class_id is JS_CLASS_STRING */ p = JS_VALUE_GET_OBJ(obj); if (JS_VALUE_GET_TAG(p->u.object_data) == JS_TAG_STRING) { p1 = JS_VALUE_GET_STRING(p->u.object_data); len = p1->len; } return len; } static int num_keys_cmp(const void *p1, const void *p2, void *opaque) { JSContext *ctx = opaque; JSAtom atom1 = ((const JSPropertyEnum *)p1)->atom; JSAtom atom2 = ((const JSPropertyEnum *)p2)->atom; uint32_t v1, v2; bool atom1_is_integer, atom2_is_integer; atom1_is_integer = JS_AtomIsArrayIndex(ctx, &v1, atom1); atom2_is_integer = JS_AtomIsArrayIndex(ctx, &v2, atom2); assert(atom1_is_integer && atom2_is_integer); if (v1 < v2) return -1; else if (v1 == v2) return 0; else return 1; } static void js_free_prop_enum(JSContext *ctx, JSPropertyEnum *tab, uint32_t len) { uint32_t i; if (tab) { for(i = 0; i < len; i++) JS_FreeAtom(ctx, tab[i].atom); js_free(ctx, tab); } } /* return < 0 in case if exception, 0 if OK. ptab and its atoms must be freed by the user. */ static int __exception JS_GetOwnPropertyNamesInternal(JSContext *ctx, JSPropertyEnum **ptab, uint32_t *plen, JSObject *p, int flags) { int i, j; JSShape *sh; JSShapeProperty *prs; JSPropertyEnum *tab_atom, *tab_exotic; JSAtom atom; uint32_t num_keys_count, str_keys_count, sym_keys_count, atom_count; uint32_t num_index, str_index, sym_index, exotic_count, exotic_keys_count; bool is_enumerable, num_sorted; uint32_t num_key; JSAtomKindEnum kind; /* clear pointer for consistency in case of failure */ *ptab = NULL; *plen = 0; /* compute the number of returned properties */ num_keys_count = 0; str_keys_count = 0; sym_keys_count = 0; exotic_keys_count = 0; exotic_count = 0; tab_exotic = NULL; sh = p->shape; for(i = 0, prs = get_shape_prop(sh); i < sh->prop_count; i++, prs++) { atom = prs->atom; if (atom != JS_ATOM_NULL) { is_enumerable = ((prs->flags & JS_PROP_ENUMERABLE) != 0); kind = JS_AtomGetKind(ctx, atom); if ((!(flags & JS_GPN_ENUM_ONLY) || is_enumerable) && ((flags >> kind) & 1) != 0) { /* need to raise an exception in case of the module name space (implicit GetOwnProperty) */ if (unlikely((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) && (flags & (JS_GPN_SET_ENUM | JS_GPN_ENUM_ONLY))) { JSVarRef *var_ref = p->prop[i].u.var_ref; if (unlikely(JS_IsUninitialized(*var_ref->pvalue))) { JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return -1; } } if (JS_AtomIsArrayIndex(ctx, &num_key, atom)) { num_keys_count++; } else if (kind == JS_ATOM_KIND_STRING) { str_keys_count++; } else { sym_keys_count++; } } } } if (p->is_exotic) { if (p->fast_array) { if (flags & JS_GPN_STRING_MASK) { num_keys_count += p->u.array.count; } } else if (p->class_id == JS_CLASS_STRING) { if (flags & JS_GPN_STRING_MASK) { num_keys_count += js_string_obj_get_length(ctx, JS_MKPTR(JS_TAG_OBJECT, p)); } } else { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em && em->get_own_property_names) { if (em->get_own_property_names(ctx, &tab_exotic, &exotic_count, JS_MKPTR(JS_TAG_OBJECT, p))) return -1; for(i = 0; i < exotic_count; i++) { atom = tab_exotic[i].atom; kind = JS_AtomGetKind(ctx, atom); if (((flags >> kind) & 1) != 0) { is_enumerable = false; if (flags & (JS_GPN_SET_ENUM | JS_GPN_ENUM_ONLY)) { JSPropertyDescriptor desc; int res; /* set the "is_enumerable" field if necessary */ res = JS_GetOwnPropertyInternal(ctx, &desc, p, atom); if (res < 0) { js_free_prop_enum(ctx, tab_exotic, exotic_count); return -1; } if (res) { is_enumerable = ((desc.flags & JS_PROP_ENUMERABLE) != 0); js_free_desc(ctx, &desc); } tab_exotic[i].is_enumerable = is_enumerable; } if (!(flags & JS_GPN_ENUM_ONLY) || is_enumerable) { exotic_keys_count++; } } } } } } /* fill them */ atom_count = num_keys_count + str_keys_count + sym_keys_count + exotic_keys_count; /* avoid allocating 0 bytes */ tab_atom = js_malloc(ctx, sizeof(tab_atom[0]) * max_int(atom_count, 1)); if (!tab_atom) { js_free_prop_enum(ctx, tab_exotic, exotic_count); return -1; } num_index = 0; str_index = num_keys_count; sym_index = str_index + str_keys_count; num_sorted = true; sh = p->shape; for(i = 0, prs = get_shape_prop(sh); i < sh->prop_count; i++, prs++) { atom = prs->atom; if (atom != JS_ATOM_NULL) { is_enumerable = ((prs->flags & JS_PROP_ENUMERABLE) != 0); kind = JS_AtomGetKind(ctx, atom); if ((!(flags & JS_GPN_ENUM_ONLY) || is_enumerable) && ((flags >> kind) & 1) != 0) { if (JS_AtomIsArrayIndex(ctx, &num_key, atom)) { j = num_index++; num_sorted = false; } else if (kind == JS_ATOM_KIND_STRING) { j = str_index++; } else { j = sym_index++; } tab_atom[j].atom = JS_DupAtom(ctx, atom); tab_atom[j].is_enumerable = is_enumerable; } } } if (p->is_exotic) { int len; if (p->fast_array) { if (flags & JS_GPN_STRING_MASK) { len = p->u.array.count; goto add_array_keys; } } else if (p->class_id == JS_CLASS_STRING) { if (flags & JS_GPN_STRING_MASK) { len = js_string_obj_get_length(ctx, JS_MKPTR(JS_TAG_OBJECT, p)); add_array_keys: for(i = 0; i < len; i++) { tab_atom[num_index].atom = __JS_AtomFromUInt32(i); if (tab_atom[num_index].atom == JS_ATOM_NULL) { js_free_prop_enum(ctx, tab_atom, num_index); return -1; } tab_atom[num_index].is_enumerable = true; num_index++; } } } else { /* Note: exotic keys are not reordered and comes after the object own properties. */ for(i = 0; i < exotic_count; i++) { atom = tab_exotic[i].atom; is_enumerable = tab_exotic[i].is_enumerable; kind = JS_AtomGetKind(ctx, atom); if ((!(flags & JS_GPN_ENUM_ONLY) || is_enumerable) && ((flags >> kind) & 1) != 0) { tab_atom[sym_index].atom = atom; tab_atom[sym_index].is_enumerable = is_enumerable; sym_index++; } else { JS_FreeAtom(ctx, atom); } } js_free(ctx, tab_exotic); } } assert(num_index == num_keys_count); assert(str_index == num_keys_count + str_keys_count); assert(sym_index == atom_count); if (num_keys_count != 0 && !num_sorted) { rqsort(tab_atom, num_keys_count, sizeof(tab_atom[0]), num_keys_cmp, ctx); } *ptab = tab_atom; *plen = atom_count; return 0; } int JS_GetOwnPropertyNames(JSContext *ctx, JSPropertyEnum **ptab, uint32_t *plen, JSValueConst obj, int flags) { if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) { JS_ThrowTypeErrorNotAnObject(ctx); return -1; } return JS_GetOwnPropertyNamesInternal(ctx, ptab, plen, JS_VALUE_GET_OBJ(obj), flags); } /* Return -1 if exception, false if the property does not exist, true if it exists. If true is returned, the property descriptor 'desc' is filled present. */ static int JS_GetOwnPropertyInternal(JSContext *ctx, JSPropertyDescriptor *desc, JSObject *p, JSAtom prop) { JSShapeProperty *prs; JSProperty *pr; retry: prs = find_own_property(&pr, p, prop); if (prs) { if (desc) { desc->flags = prs->flags & JS_PROP_C_W_E; desc->getter = JS_UNDEFINED; desc->setter = JS_UNDEFINED; desc->value = JS_UNDEFINED; if (unlikely(prs->flags & JS_PROP_TMASK)) { if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { desc->flags |= JS_PROP_GETSET; if (pr->u.getset.getter) desc->getter = js_dup(JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.getter)); if (pr->u.getset.setter) desc->setter = js_dup(JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.setter)); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { JSValue val = *pr->u.var_ref->pvalue; if (unlikely(JS_IsUninitialized(val))) { JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return -1; } desc->value = js_dup(val); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* Instantiate property and retry */ if (JS_AutoInitProperty(ctx, p, prop, pr, prs)) return -1; goto retry; } } else { desc->value = js_dup(pr->u.value); } } else { /* for consistency, send the exception even if desc is NULL */ if (unlikely((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF)) { if (unlikely(JS_IsUninitialized(*pr->u.var_ref->pvalue))) { JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return -1; } } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* nothing to do: delay instantiation until actual value and/or attributes are read */ } } return true; } if (p->is_exotic) { if (p->fast_array) { /* specific case for fast arrays */ if (__JS_AtomIsTaggedInt(prop)) { uint32_t idx; idx = __JS_AtomToUInt32(prop); if (idx < p->u.array.count) { if (desc) { desc->flags = JS_PROP_WRITABLE | JS_PROP_ENUMERABLE | JS_PROP_CONFIGURABLE; desc->getter = JS_UNDEFINED; desc->setter = JS_UNDEFINED; desc->value = JS_GetPropertyUint32(ctx, JS_MKPTR(JS_TAG_OBJECT, p), idx); } return true; } } } else { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em && em->get_own_property) { return em->get_own_property(ctx, desc, JS_MKPTR(JS_TAG_OBJECT, p), prop); } } } return false; } int JS_GetOwnProperty(JSContext *ctx, JSPropertyDescriptor *desc, JSValueConst obj, JSAtom prop) { if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) { JS_ThrowTypeErrorNotAnObject(ctx); return -1; } return JS_GetOwnPropertyInternal(ctx, desc, JS_VALUE_GET_OBJ(obj), prop); } void JS_FreePropertyEnum(JSContext *ctx, JSPropertyEnum *tab, uint32_t len) { js_free_prop_enum(ctx, tab, len); } /* return -1 if exception (Proxy object only) or true/false */ int JS_IsExtensible(JSContext *ctx, JSValueConst obj) { JSObject *p; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) return false; p = JS_VALUE_GET_OBJ(obj); if (unlikely(p->class_id == JS_CLASS_PROXY)) return js_proxy_isExtensible(ctx, obj); else return p->extensible; } /* return -1 if exception (Proxy object only) or true/false */ int JS_PreventExtensions(JSContext *ctx, JSValueConst obj) { JSObject *p; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) return false; p = JS_VALUE_GET_OBJ(obj); if (unlikely(p->class_id == JS_CLASS_PROXY)) return js_proxy_preventExtensions(ctx, obj); p->extensible = false; return true; } /* return -1 if exception otherwise true or false */ int JS_HasProperty(JSContext *ctx, JSValueConst obj, JSAtom prop) { JSObject *p; int ret; JSValue obj1; if (unlikely(JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT)) return false; p = JS_VALUE_GET_OBJ(obj); for(;;) { if (p->is_exotic) { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em && em->has_property) { /* has_property can free the prototype */ obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, p)); ret = em->has_property(ctx, obj1, prop); JS_FreeValue(ctx, obj1); return ret; } } /* JS_GetOwnPropertyInternal can free the prototype */ js_dup(JS_MKPTR(JS_TAG_OBJECT, p)); ret = JS_GetOwnPropertyInternal(ctx, NULL, p, prop); JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, p)); if (ret != 0) return ret; if (is_typed_array(p->class_id)) { ret = JS_AtomIsNumericIndex(ctx, prop); if (ret != 0) { if (ret < 0) return -1; return false; } } p = p->shape->proto; if (!p) break; } return false; } /* val must be a symbol */ static JSAtom js_symbol_to_atom(JSContext *ctx, JSValueConst val) { JSAtomStruct *p = JS_VALUE_GET_PTR(val); return js_get_atom_index(ctx->rt, p); } /* return JS_ATOM_NULL in case of exception */ JSAtom JS_ValueToAtom(JSContext *ctx, JSValueConst val) { JSAtom atom; uint32_t tag; tag = JS_VALUE_GET_TAG(val); if (tag == JS_TAG_INT && (uint32_t)JS_VALUE_GET_INT(val) <= JS_ATOM_MAX_INT) { /* fast path for integer values */ atom = __JS_AtomFromUInt32(JS_VALUE_GET_INT(val)); } else if (tag == JS_TAG_SYMBOL) { JSAtomStruct *p = JS_VALUE_GET_PTR(val); atom = JS_DupAtom(ctx, js_get_atom_index(ctx->rt, p)); } else { JSValue str; str = JS_ToPropertyKey(ctx, val); if (JS_IsException(str)) return JS_ATOM_NULL; if (JS_VALUE_GET_TAG(str) == JS_TAG_SYMBOL) { atom = js_symbol_to_atom(ctx, str); } else { atom = JS_NewAtomStr(ctx, JS_VALUE_GET_STRING(str)); } } return atom; } static bool js_get_fast_array_element(JSContext *ctx, JSObject *p, uint32_t idx, JSValue *pval) { switch(p->class_id) { case JS_CLASS_ARRAY: case JS_CLASS_ARGUMENTS: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_dup(p->u.array.u.values[idx]); return true; case JS_CLASS_INT8_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_int32(p->u.array.u.int8_ptr[idx]); return true; case JS_CLASS_UINT8C_ARRAY: case JS_CLASS_UINT8_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_int32(p->u.array.u.uint8_ptr[idx]); return true; case JS_CLASS_INT16_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_int32(p->u.array.u.int16_ptr[idx]); return true; case JS_CLASS_UINT16_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_int32(p->u.array.u.uint16_ptr[idx]); return true; case JS_CLASS_INT32_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_int32(p->u.array.u.int32_ptr[idx]); return true; case JS_CLASS_UINT32_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_uint32(p->u.array.u.uint32_ptr[idx]); return true; case JS_CLASS_BIG_INT64_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = JS_NewBigInt64(ctx, p->u.array.u.int64_ptr[idx]); return true; case JS_CLASS_BIG_UINT64_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = JS_NewBigUint64(ctx, p->u.array.u.uint64_ptr[idx]); return true; case JS_CLASS_FLOAT16_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_float64(fromfp16(p->u.array.u.fp16_ptr[idx])); return true; case JS_CLASS_FLOAT32_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_float64(p->u.array.u.float_ptr[idx]); return true; case JS_CLASS_FLOAT64_ARRAY: if (unlikely(idx >= p->u.array.count)) return false; *pval = js_float64(p->u.array.u.double_ptr[idx]); return true; default: return false; } } static JSValue JS_GetPropertyValue(JSContext *ctx, JSValueConst this_obj, JSValue prop) { JSAtom atom; JSValue ret; uint32_t tag; tag = JS_VALUE_GET_TAG(this_obj); if (likely(tag == JS_TAG_OBJECT)) { if (JS_VALUE_GET_TAG(prop) == JS_TAG_INT) { JSObject *p = JS_VALUE_GET_OBJ(this_obj); uint32_t idx = JS_VALUE_GET_INT(prop); JSValue val; /* fast path for array and typed array access */ if (js_get_fast_array_element(ctx, p, idx, &val)) return val; } } else { switch(tag) { case JS_TAG_NULL: JS_FreeValue(ctx, prop); return JS_ThrowTypeError(ctx, "cannot read property of null"); case JS_TAG_UNDEFINED: JS_FreeValue(ctx, prop); return JS_ThrowTypeError(ctx, "cannot read property of undefined"); } } atom = JS_ValueToAtom(ctx, prop); JS_FreeValue(ctx, prop); if (unlikely(atom == JS_ATOM_NULL)) return JS_EXCEPTION; ret = JS_GetProperty(ctx, this_obj, atom); JS_FreeAtom(ctx, atom); return ret; } JSValue JS_GetPropertyUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx) { return JS_GetPropertyInt64(ctx, this_obj, idx); } /* Check if an object has a generalized numeric property. Return value: -1 for exception, *pval set to JS_EXCEPTION true if property exists, stored into *pval, false if property does not exist. *pval set to JS_UNDEFINED. */ static int JS_TryGetPropertyInt64(JSContext *ctx, JSValueConst obj, int64_t idx, JSValue *pval) { JSValue val; JSAtom prop; int present; if (likely(JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT && (uint64_t)idx <= INT32_MAX)) { /* fast path for array and typed array access */ JSObject *p = JS_VALUE_GET_OBJ(obj); if (js_get_fast_array_element(ctx, p, idx, pval)) return true; } val = JS_EXCEPTION; present = -1; prop = JS_NewAtomInt64(ctx, idx); if (likely(prop != JS_ATOM_NULL)) { present = JS_HasProperty(ctx, obj, prop); if (present > 0) { val = JS_GetProperty(ctx, obj, prop); if (unlikely(JS_IsException(val))) present = -1; } else if (present == false) { val = JS_UNDEFINED; } JS_FreeAtom(ctx, prop); } *pval = val; return present; } JSValue JS_GetPropertyInt64(JSContext *ctx, JSValueConst obj, int64_t idx) { JSAtom prop; JSValue val; if (likely(JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT && (uint64_t)idx <= INT32_MAX)) { /* fast path for array and typed array access */ JSObject *p = JS_VALUE_GET_OBJ(obj); if (js_get_fast_array_element(ctx, p, idx, &val)) return val; } prop = JS_NewAtomInt64(ctx, idx); if (prop == JS_ATOM_NULL) return JS_EXCEPTION; val = JS_GetProperty(ctx, obj, prop); JS_FreeAtom(ctx, prop); return val; } /* `prop` may be pure ASCII or UTF-8 encoded */ JSValue JS_GetPropertyStr(JSContext *ctx, JSValueConst this_obj, const char *prop) { JSAtom atom; JSValue ret; atom = JS_NewAtom(ctx, prop); ret = JS_GetProperty(ctx, this_obj, atom); JS_FreeAtom(ctx, atom); return ret; } /* Note: the property value is not initialized. Return NULL if memory error. */ static JSProperty *add_property(JSContext *ctx, JSObject *p, JSAtom prop, int prop_flags) { JSShape *sh, *new_sh; sh = p->shape; if (sh->is_hashed) { /* try to find an existing shape */ new_sh = find_hashed_shape_prop(ctx->rt, sh, prop, prop_flags); if (new_sh) { /* matching shape found: use it */ /* the property array may need to be resized */ if (new_sh->prop_size != sh->prop_size) { JSProperty *new_prop; new_prop = js_realloc(ctx, p->prop, sizeof(p->prop[0]) * new_sh->prop_size); if (!new_prop) return NULL; p->prop = new_prop; } p->shape = js_dup_shape(new_sh); js_free_shape(ctx->rt, sh); return &p->prop[new_sh->prop_count - 1]; } else if (sh->header.ref_count != 1) { /* if the shape is shared, clone it */ new_sh = js_clone_shape(ctx, sh); if (!new_sh) return NULL; /* hash the cloned shape */ new_sh->is_hashed = true; js_shape_hash_link(ctx->rt, new_sh); js_free_shape(ctx->rt, p->shape); p->shape = new_sh; } } assert(p->shape->header.ref_count == 1); if (add_shape_property(ctx, &p->shape, p, prop, prop_flags)) return NULL; return &p->prop[p->shape->prop_count - 1]; } /* can be called on Array or Arguments objects. return < 0 if memory alloc error. */ static no_inline __exception int convert_fast_array_to_array(JSContext *ctx, JSObject *p) { JSProperty *pr; JSShape *sh; JSValue *tab; uint32_t i, len, new_count; if (js_shape_prepare_update(ctx, p, NULL)) return -1; len = p->u.array.count; /* resize the properties once to simplify the error handling */ sh = p->shape; new_count = sh->prop_count + len; if (new_count > sh->prop_size) { if (resize_properties(ctx, &p->shape, p, new_count)) return -1; } tab = p->u.array.u.values; for(i = 0; i < len; i++) { /* add_property cannot fail here but __JS_AtomFromUInt32(i) fails for i > INT32_MAX */ pr = add_property(ctx, p, __JS_AtomFromUInt32(i), JS_PROP_C_W_E); pr->u.value = *tab++; } js_free(ctx, p->u.array.u.values); p->u.array.count = 0; p->u.array.u.values = NULL; /* fail safe */ p->u.array.u1.size = 0; p->fast_array = 0; return 0; } static int delete_property(JSContext *ctx, JSObject *p, JSAtom atom) { JSShape *sh; JSShapeProperty *pr, *lpr, *prop; JSProperty *pr1; uint32_t lpr_idx; intptr_t h, h1; redo: sh = p->shape; h1 = atom & sh->prop_hash_mask; h = prop_hash_end(sh)[-h1 - 1]; prop = get_shape_prop(sh); lpr = NULL; lpr_idx = 0; /* prevent warning */ while (h != 0) { pr = &prop[h - 1]; if (likely(pr->atom == atom)) { /* found ! */ if (!(pr->flags & JS_PROP_CONFIGURABLE)) return false; /* realloc the shape if needed */ if (lpr) lpr_idx = lpr - get_shape_prop(sh); if (js_shape_prepare_update(ctx, p, &pr)) return -1; sh = p->shape; /* remove property */ if (lpr) { lpr = get_shape_prop(sh) + lpr_idx; lpr->hash_next = pr->hash_next; } else { prop_hash_end(sh)[-h1 - 1] = pr->hash_next; } sh->deleted_prop_count++; /* free the entry */ pr1 = &p->prop[h - 1]; free_property(ctx->rt, pr1, pr->flags); JS_FreeAtom(ctx, pr->atom); /* put default values */ pr->flags = 0; pr->atom = JS_ATOM_NULL; pr1->u.value = JS_UNDEFINED; /* compact the properties if too many deleted properties */ if (sh->deleted_prop_count >= 8 && sh->deleted_prop_count >= ((unsigned)sh->prop_count / 2)) { compact_properties(ctx, p); } return true; } lpr = pr; h = pr->hash_next; } if (p->is_exotic) { if (p->fast_array) { uint32_t idx; if (JS_AtomIsArrayIndex(ctx, &idx, atom) && idx < p->u.array.count) { if (p->class_id == JS_CLASS_ARRAY || p->class_id == JS_CLASS_ARGUMENTS) { /* Special case deleting the last element of a fast Array */ if (idx == p->u.array.count - 1) { JS_FreeValue(ctx, p->u.array.u.values[idx]); p->u.array.count = idx; return true; } if (convert_fast_array_to_array(ctx, p)) return -1; goto redo; } else { return false; } } } else { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em && em->delete_property) { return em->delete_property(ctx, JS_MKPTR(JS_TAG_OBJECT, p), atom); } } } /* not found */ return true; } static int call_setter(JSContext *ctx, JSObject *setter, JSValueConst this_obj, JSValue val, int flags) { JSValue ret, func; if (likely(setter)) { func = JS_MKPTR(JS_TAG_OBJECT, setter); /* Note: the field could be removed in the setter */ func = js_dup(func); ret = JS_CallFree(ctx, func, this_obj, 1, vc(&val)); JS_FreeValue(ctx, val); if (JS_IsException(ret)) return -1; JS_FreeValue(ctx, ret); return true; } else { JS_FreeValue(ctx, val); if ((flags & JS_PROP_THROW) || ((flags & JS_PROP_THROW_STRICT) && is_strict_mode(ctx))) { JS_ThrowTypeError(ctx, "no setter for property"); return -1; } return false; } } /* set the array length and remove the array elements if necessary. */ static int set_array_length(JSContext *ctx, JSObject *p, JSValue val, int flags) { uint32_t len, idx, cur_len; int i, ret; /* Note: this call can reallocate the properties of 'p' */ ret = JS_ToArrayLengthFree(ctx, &len, val, false); if (ret) return -1; /* JS_ToArrayLengthFree() must be done before the read-only test */ if (unlikely(!(p->shape->prop[0].flags & JS_PROP_WRITABLE))) return JS_ThrowTypeErrorReadOnly(ctx, flags, JS_ATOM_length); if (likely(p->fast_array)) { uint32_t old_len = p->u.array.count; if (len < old_len) { for(i = len; i < old_len; i++) { JS_FreeValue(ctx, p->u.array.u.values[i]); } p->u.array.count = len; } p->prop[0].u.value = js_uint32(len); } else { /* Note: length is always a uint32 because the object is an array */ JS_ToUint32(ctx, &cur_len, p->prop[0].u.value); if (len < cur_len) { uint32_t d; JSShape *sh; JSShapeProperty *pr; d = cur_len - len; sh = p->shape; if (d <= sh->prop_count) { JSAtom atom; /* faster to iterate */ while (cur_len > len) { atom = JS_NewAtomUInt32(ctx, cur_len - 1); ret = delete_property(ctx, p, atom); JS_FreeAtom(ctx, atom); if (unlikely(!ret)) { /* unlikely case: property is not configurable */ break; } cur_len--; } } else { /* faster to iterate thru all the properties. Need two passes in case one of the property is not configurable */ cur_len = len; for(i = 0, pr = get_shape_prop(sh); i < sh->prop_count; i++, pr++) { if (pr->atom != JS_ATOM_NULL && JS_AtomIsArrayIndex(ctx, &idx, pr->atom)) { if (idx >= cur_len && !(pr->flags & JS_PROP_CONFIGURABLE)) { cur_len = idx + 1; } } } for(i = 0, pr = get_shape_prop(sh); i < sh->prop_count; i++, pr++) { if (pr->atom != JS_ATOM_NULL && JS_AtomIsArrayIndex(ctx, &idx, pr->atom)) { if (idx >= cur_len) { /* remove the property */ delete_property(ctx, p, pr->atom); /* WARNING: the shape may have been modified */ sh = p->shape; pr = get_shape_prop(sh) + i; } } } } } else { cur_len = len; } set_value(ctx, &p->prop[0].u.value, js_uint32(cur_len)); if (unlikely(cur_len > len)) { return JS_ThrowTypeErrorOrFalse(ctx, flags, "not configurable"); } } return true; } /* return -1 if exception */ static int expand_fast_array(JSContext *ctx, JSObject *p, uint32_t new_len) { uint32_t new_size; size_t slack; JSValue *new_array_prop; /* XXX: potential arithmetic overflow */ new_size = max_int(new_len, p->u.array.u1.size * 3 / 2); new_array_prop = js_realloc2(ctx, p->u.array.u.values, sizeof(JSValue) * new_size, &slack); if (!new_array_prop) return -1; new_size += slack / sizeof(*new_array_prop); p->u.array.u.values = new_array_prop; p->u.array.u1.size = new_size; return 0; } /* Preconditions: 'p' must be of class JS_CLASS_ARRAY, p->fast_array = true and p->extensible = true */ static int add_fast_array_element(JSContext *ctx, JSObject *p, JSValue val, int flags) { uint32_t new_len, array_len; /* extend the array by one */ /* XXX: convert to slow array if new_len > 2^31-1 elements */ new_len = p->u.array.count + 1; /* update the length if necessary. We assume that if the length is not an integer, then if it >= 2^31. */ if (likely(JS_VALUE_GET_TAG(p->prop[0].u.value) == JS_TAG_INT)) { array_len = JS_VALUE_GET_INT(p->prop[0].u.value); if (new_len > array_len) { if (unlikely(!(get_shape_prop(p->shape)->flags & JS_PROP_WRITABLE))) { JS_FreeValue(ctx, val); return JS_ThrowTypeErrorReadOnly(ctx, flags, JS_ATOM_length); } p->prop[0].u.value = js_int32(new_len); } } if (unlikely(new_len > p->u.array.u1.size)) { if (expand_fast_array(ctx, p, new_len)) { JS_FreeValue(ctx, val); return -1; } } p->u.array.u.values[new_len - 1] = val; p->u.array.count = new_len; return true; } static void js_free_desc(JSContext *ctx, JSPropertyDescriptor *desc) { JS_FreeValue(ctx, desc->getter); JS_FreeValue(ctx, desc->setter); JS_FreeValue(ctx, desc->value); } /* return -1 in case of exception or true or false. Warning: 'val' is freed by the function. 'flags' is a bitmask of JS_PROP_NO_ADD, JS_PROP_THROW or JS_PROP_THROW_STRICT. If JS_PROP_NO_ADD is set, the new property is not added and an error is raised. 'obj' must be an object when obj != this_obj. */ static int JS_SetPropertyInternal2(JSContext *ctx, JSValueConst obj, JSAtom prop, JSValue val, JSValueConst this_obj, int flags) { JSObject *p, *p1; JSShapeProperty *prs; JSProperty *pr; JSPropertyDescriptor desc; int ret; switch(JS_VALUE_GET_TAG(this_obj)) { case JS_TAG_NULL: JS_ThrowTypeErrorAtom(ctx, "cannot set property '%s' of null", prop); goto fail; case JS_TAG_UNDEFINED: JS_ThrowTypeErrorAtom(ctx, "cannot set property '%s' of undefined", prop); goto fail; case JS_TAG_OBJECT: p = JS_VALUE_GET_OBJ(this_obj); p1 = JS_VALUE_GET_OBJ(obj); if (p == p1) break; goto retry2; default: if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) obj = JS_GetPrototypePrimitive(ctx, obj); p = NULL; p1 = JS_VALUE_GET_OBJ(obj); goto prototype_lookup; } retry: prs = find_own_property(&pr, p1, prop); if (prs) { if (likely((prs->flags & (JS_PROP_TMASK | JS_PROP_WRITABLE | JS_PROP_LENGTH)) == JS_PROP_WRITABLE)) { /* fast case */ set_value(ctx, &pr->u.value, val); return true; } else if (prs->flags & JS_PROP_LENGTH) { assert(p->class_id == JS_CLASS_ARRAY); assert(prop == JS_ATOM_length); return set_array_length(ctx, p, val, flags); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { return call_setter(ctx, pr->u.getset.setter, this_obj, val, flags); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { /* JS_PROP_WRITABLE is always true for variable references, but they are write protected in module name spaces. */ if (p->class_id == JS_CLASS_MODULE_NS) goto read_only_prop; set_value(ctx, pr->u.var_ref->pvalue, val); return true; } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* Instantiate property and retry (potentially useless) */ if (JS_AutoInitProperty(ctx, p, prop, pr, prs)) goto fail; goto retry; } else { goto read_only_prop; } } for(;;) { if (p1->is_exotic) { if (p1->fast_array) { if (__JS_AtomIsTaggedInt(prop)) { uint32_t idx = __JS_AtomToUInt32(prop); if (idx < p1->u.array.count) { if (unlikely(p == p1)) return JS_SetPropertyValue(ctx, this_obj, js_int32(idx), val, flags); else break; } else if (is_typed_array(p1->class_id)) { goto typed_array_oob; } } else if (is_typed_array(p1->class_id)) { ret = JS_AtomIsNumericIndex(ctx, prop); if (ret != 0) { if (ret < 0) goto fail; typed_array_oob: // per spec: evaluate value for side effects if (p1->class_id == JS_CLASS_BIG_INT64_ARRAY || p1->class_id == JS_CLASS_BIG_UINT64_ARRAY) { int64_t v; if (JS_ToBigInt64Free(ctx, &v, val)) return -1; } else { val = JS_ToNumberFree(ctx, val); JS_FreeValue(ctx, val); if (JS_IsException(val)) return -1; } return true; } } } else { const JSClassExoticMethods *em = ctx->rt->class_array[p1->class_id].exotic; if (em) { JSValue obj1; if (em->set_property) { /* set_property can free the prototype */ obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, p1)); ret = em->set_property(ctx, obj1, prop, val, this_obj, flags); JS_FreeValue(ctx, obj1); JS_FreeValue(ctx, val); return ret; } if (em->get_own_property) { /* get_own_property can free the prototype */ obj1 = js_dup(JS_MKPTR(JS_TAG_OBJECT, p1)); ret = em->get_own_property(ctx, &desc, obj1, prop); JS_FreeValue(ctx, obj1); if (ret < 0) goto fail; if (ret) { if (desc.flags & JS_PROP_GETSET) { JSObject *setter; if (JS_IsUndefined(desc.setter)) setter = NULL; else setter = JS_VALUE_GET_OBJ(desc.setter); ret = call_setter(ctx, setter, this_obj, val, flags); JS_FreeValue(ctx, desc.getter); JS_FreeValue(ctx, desc.setter); return ret; } else { JS_FreeValue(ctx, desc.value); if (!(desc.flags & JS_PROP_WRITABLE)) goto read_only_prop; if (likely(p == p1)) { ret = JS_DefineProperty(ctx, this_obj, prop, val, JS_UNDEFINED, JS_UNDEFINED, JS_PROP_HAS_VALUE); JS_FreeValue(ctx, val); return ret; } else { break; } } } } } } } p1 = p1->shape->proto; prototype_lookup: if (!p1) break; retry2: prs = find_own_property(&pr, p1, prop); if (prs) { if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { return call_setter(ctx, pr->u.getset.setter, this_obj, val, flags); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* Instantiate property and retry (potentially useless) */ if (JS_AutoInitProperty(ctx, p1, prop, pr, prs)) return -1; goto retry2; } else if (!(prs->flags & JS_PROP_WRITABLE)) { goto read_only_prop; } } } if (unlikely(flags & JS_PROP_NO_ADD)) { JS_ThrowReferenceErrorNotDefined(ctx, prop); goto fail; } if (unlikely(!p)) { ret = JS_ThrowTypeErrorOrFalse(ctx, flags, "not an object"); goto done; } if (unlikely(!p->extensible)) { ret = JS_ThrowTypeErrorOrFalse(ctx, flags, "object is not extensible"); goto done; } if (p == JS_VALUE_GET_OBJ(obj)) { if (p->is_exotic) { if (p->class_id == JS_CLASS_ARRAY && p->fast_array && __JS_AtomIsTaggedInt(prop)) { uint32_t idx = __JS_AtomToUInt32(prop); if (idx == p->u.array.count) { /* fast case */ return add_fast_array_element(ctx, p, val, flags); } } goto generic_create_prop; } else { pr = add_property(ctx, p, prop, JS_PROP_C_W_E); if (!pr) goto fail; pr->u.value = val; return true; } } // TODO(bnoordhuis) return JSProperty slot and update in place // when plain property (not is_exotic/setter/etc.) to avoid // calling find_own_property() thrice? ret = JS_GetOwnPropertyInternal(ctx, &desc, p, prop); if (ret < 0) goto fail; if (ret) { JS_FreeValue(ctx, desc.value); if (desc.flags & JS_PROP_GETSET) { JS_FreeValue(ctx, desc.getter); JS_FreeValue(ctx, desc.setter); ret = JS_ThrowTypeErrorOrFalse(ctx, flags, "setter is forbidden"); goto done; } else if (!(desc.flags & JS_PROP_WRITABLE) || p->class_id == JS_CLASS_MODULE_NS) { read_only_prop: ret = JS_ThrowTypeErrorReadOnly(ctx, flags, prop); goto done; } ret = JS_DefineProperty(ctx, this_obj, prop, val, JS_UNDEFINED, JS_UNDEFINED, JS_PROP_HAS_VALUE); } else { generic_create_prop: ret = JS_CreateProperty(ctx, p, prop, val, JS_UNDEFINED, JS_UNDEFINED, flags | JS_PROP_HAS_VALUE | JS_PROP_HAS_ENUMERABLE | JS_PROP_HAS_WRITABLE | JS_PROP_HAS_CONFIGURABLE | JS_PROP_C_W_E); } done: JS_FreeValue(ctx, val); return ret; fail: JS_FreeValue(ctx, val); return -1; } static int JS_SetPropertyInternal(JSContext *ctx, JSValueConst obj, JSAtom prop, JSValue val, int flags) { return JS_SetPropertyInternal2(ctx, obj, prop, val, obj, flags); } int JS_SetProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue val) { return JS_SetPropertyInternal(ctx, this_obj, prop, val, JS_PROP_THROW); } /* flags can be JS_PROP_THROW or JS_PROP_THROW_STRICT */ static int JS_SetPropertyValue(JSContext *ctx, JSValueConst this_obj, JSValue prop, JSValue val, int flags) { if (likely(JS_VALUE_GET_TAG(this_obj) == JS_TAG_OBJECT && JS_VALUE_GET_TAG(prop) == JS_TAG_INT)) { JSObject *p; uint32_t idx; double d; int32_t v; /* fast path for array access */ p = JS_VALUE_GET_OBJ(this_obj); idx = JS_VALUE_GET_INT(prop); switch(p->class_id) { case JS_CLASS_ARRAY: if (unlikely(idx >= (uint32_t)p->u.array.count)) { JSObject *p1; JSShape *sh1; /* fast path to add an element to the array */ if (idx != (uint32_t)p->u.array.count || !p->fast_array || !p->extensible) goto slow_path; /* check if prototype chain has a numeric property */ p1 = p->shape->proto; while (p1 != NULL) { sh1 = p1->shape; if (p1->class_id == JS_CLASS_ARRAY) { if (unlikely(!p1->fast_array)) goto slow_path; } else if (p1->class_id == JS_CLASS_OBJECT) { if (unlikely(sh1->has_small_array_index)) goto slow_path; } else { goto slow_path; } p1 = sh1->proto; } /* add element */ return add_fast_array_element(ctx, p, val, flags); } set_value(ctx, &p->u.array.u.values[idx], val); break; case JS_CLASS_ARGUMENTS: if (unlikely(idx >= (uint32_t)p->u.array.count)) goto slow_path; set_value(ctx, &p->u.array.u.values[idx], val); break; case JS_CLASS_UINT8C_ARRAY: if (JS_ToUint8ClampFree(ctx, &v, val)) goto ta_cvt_fail; /* Note: the conversion can detach the typed array, so the array bound check must be done after */ if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.uint8_ptr[idx] = v; break; case JS_CLASS_INT8_ARRAY: case JS_CLASS_UINT8_ARRAY: if (JS_ToInt32Free(ctx, &v, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.uint8_ptr[idx] = v; break; case JS_CLASS_INT16_ARRAY: case JS_CLASS_UINT16_ARRAY: if (JS_ToInt32Free(ctx, &v, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.uint16_ptr[idx] = v; break; case JS_CLASS_INT32_ARRAY: case JS_CLASS_UINT32_ARRAY: if (JS_ToInt32Free(ctx, &v, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.uint32_ptr[idx] = v; break; case JS_CLASS_BIG_INT64_ARRAY: case JS_CLASS_BIG_UINT64_ARRAY: /* XXX: need specific conversion function */ { int64_t v; if (JS_ToBigInt64Free(ctx, &v, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.uint64_ptr[idx] = v; } break; case JS_CLASS_FLOAT16_ARRAY: if (JS_ToFloat64Free(ctx, &d, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.fp16_ptr[idx] = tofp16(d); break; case JS_CLASS_FLOAT32_ARRAY: if (JS_ToFloat64Free(ctx, &d, val)) goto ta_cvt_fail; if (unlikely(idx >= (uint32_t)p->u.array.count)) goto ta_out_of_bound; p->u.array.u.float_ptr[idx] = d; break; case JS_CLASS_FLOAT64_ARRAY: if (JS_ToFloat64Free(ctx, &d, val)) { ta_cvt_fail: if (flags & JS_PROP_REFLECT_DEFINE_PROPERTY) { JS_FreeValue(ctx, JS_GetException(ctx)); return false; } return -1; } if (unlikely(idx >= (uint32_t)p->u.array.count)) { ta_out_of_bound: if (typed_array_is_oob(p)) if (flags & JS_PROP_DEFINE_PROPERTY) return JS_ThrowTypeErrorOrFalse(ctx, flags, "out-of-bound numeric index"); return true; // per spec: no OOB exception } p->u.array.u.double_ptr[idx] = d; break; default: goto slow_path; } return true; } else { JSAtom atom; int ret; slow_path: atom = JS_ValueToAtom(ctx, prop); JS_FreeValue(ctx, prop); if (unlikely(atom == JS_ATOM_NULL)) { JS_FreeValue(ctx, val); return -1; } ret = JS_SetPropertyInternal(ctx, this_obj, atom, val, flags); JS_FreeAtom(ctx, atom); return ret; } } int JS_SetPropertyUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx, JSValue val) { return JS_SetPropertyValue(ctx, this_obj, js_uint32(idx), val, JS_PROP_THROW); } int JS_SetPropertyInt64(JSContext *ctx, JSValueConst this_obj, int64_t idx, JSValue val) { JSAtom prop; int res; if ((uint64_t)idx <= INT32_MAX) { /* fast path for fast arrays */ return JS_SetPropertyValue(ctx, this_obj, js_int32(idx), val, JS_PROP_THROW); } prop = JS_NewAtomInt64(ctx, idx); if (prop == JS_ATOM_NULL) { JS_FreeValue(ctx, val); return -1; } res = JS_SetProperty(ctx, this_obj, prop, val); JS_FreeAtom(ctx, prop); return res; } /* `prop` may be pure ASCII or UTF-8 encoded */ int JS_SetPropertyStr(JSContext *ctx, JSValueConst this_obj, const char *prop, JSValue val) { JSAtom atom; int ret; atom = JS_NewAtom(ctx, prop); ret = JS_SetPropertyInternal(ctx, this_obj, atom, val, JS_PROP_THROW); JS_FreeAtom(ctx, atom); return ret; } /* compute the property flags. For each flag: (JS_PROP_HAS_x forces it, otherwise def_flags is used) Note: makes assumption about the bit pattern of the flags */ static int get_prop_flags(int flags, int def_flags) { int mask; mask = (flags >> JS_PROP_HAS_SHIFT) & JS_PROP_C_W_E; return (flags & mask) | (def_flags & ~mask); } static int JS_CreateProperty(JSContext *ctx, JSObject *p, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags) { JSProperty *pr; int ret, prop_flags; /* add a new property or modify an existing exotic one */ if (p->is_exotic) { if (p->class_id == JS_CLASS_ARRAY) { uint32_t idx, len; if (p->fast_array) { if (__JS_AtomIsTaggedInt(prop)) { idx = __JS_AtomToUInt32(prop); if (idx == p->u.array.count) { if (!p->extensible) goto not_extensible; if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) goto convert_to_array; prop_flags = get_prop_flags(flags, 0); if (prop_flags != JS_PROP_C_W_E) goto convert_to_array; return add_fast_array_element(ctx, p, js_dup(val), flags); } else { goto convert_to_array; } } else if (JS_AtomIsArrayIndex(ctx, &idx, prop)) { /* convert the fast array to normal array */ convert_to_array: if (convert_fast_array_to_array(ctx, p)) return -1; goto generic_array; } } else if (JS_AtomIsArrayIndex(ctx, &idx, prop)) { JSProperty *plen; JSShapeProperty *pslen; generic_array: /* update the length field */ plen = &p->prop[0]; JS_ToUint32(ctx, &len, plen->u.value); if ((idx + 1) > len) { pslen = get_shape_prop(p->shape); if (unlikely(!(pslen->flags & JS_PROP_WRITABLE))) return JS_ThrowTypeErrorReadOnly(ctx, flags, JS_ATOM_length); /* XXX: should update the length after defining the property */ len = idx + 1; set_value(ctx, &plen->u.value, js_uint32(len)); } } } else if (is_typed_array(p->class_id)) { ret = JS_AtomIsNumericIndex(ctx, prop); if (ret != 0) { if (ret < 0) return -1; return JS_ThrowTypeErrorOrFalse(ctx, flags, "cannot create numeric index in typed array"); } } else if (!(flags & JS_PROP_NO_EXOTIC)) { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; if (em) { if (em->define_own_property) { return em->define_own_property(ctx, JS_MKPTR(JS_TAG_OBJECT, p), prop, val, getter, setter, flags); } ret = JS_IsExtensible(ctx, JS_MKPTR(JS_TAG_OBJECT, p)); if (ret < 0) return -1; if (!ret) goto not_extensible; } } } if (!p->extensible) { not_extensible: return JS_ThrowTypeErrorOrFalse(ctx, flags, "object is not extensible"); } if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { prop_flags = (flags & (JS_PROP_CONFIGURABLE | JS_PROP_ENUMERABLE)) | JS_PROP_GETSET; } else { prop_flags = flags & JS_PROP_C_W_E; } pr = add_property(ctx, p, prop, prop_flags); if (unlikely(!pr)) return -1; if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { pr->u.getset.getter = NULL; if ((flags & JS_PROP_HAS_GET) && JS_IsFunction(ctx, getter)) { pr->u.getset.getter = JS_VALUE_GET_OBJ(js_dup(getter)); } pr->u.getset.setter = NULL; if ((flags & JS_PROP_HAS_SET) && JS_IsFunction(ctx, setter)) { pr->u.getset.setter = JS_VALUE_GET_OBJ(js_dup(setter)); } } else { if (flags & JS_PROP_HAS_VALUE) { pr->u.value = js_dup(val); } else { pr->u.value = JS_UNDEFINED; } } return true; } /* return false if not OK */ static bool check_define_prop_flags(int prop_flags, int flags) { bool has_accessor, is_getset; if (!(prop_flags & JS_PROP_CONFIGURABLE)) { if ((flags & (JS_PROP_HAS_CONFIGURABLE | JS_PROP_CONFIGURABLE)) == (JS_PROP_HAS_CONFIGURABLE | JS_PROP_CONFIGURABLE)) { return false; } if ((flags & JS_PROP_HAS_ENUMERABLE) && (flags & JS_PROP_ENUMERABLE) != (prop_flags & JS_PROP_ENUMERABLE)) return false; } if (flags & (JS_PROP_HAS_VALUE | JS_PROP_HAS_WRITABLE | JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { if (!(prop_flags & JS_PROP_CONFIGURABLE)) { has_accessor = ((flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) != 0); is_getset = ((prop_flags & JS_PROP_TMASK) == JS_PROP_GETSET); if (has_accessor != is_getset) return false; if (!has_accessor && !is_getset && !(prop_flags & JS_PROP_WRITABLE)) { /* not writable: cannot set the writable bit */ if ((flags & (JS_PROP_HAS_WRITABLE | JS_PROP_WRITABLE)) == (JS_PROP_HAS_WRITABLE | JS_PROP_WRITABLE)) return false; } } } return true; } /* ensure that the shape can be safely modified */ static int js_shape_prepare_update(JSContext *ctx, JSObject *p, JSShapeProperty **pprs) { JSShape *sh; uint32_t idx = 0; /* prevent warning */ sh = p->shape; if (sh->is_hashed) { if (sh->header.ref_count != 1) { if (pprs) idx = *pprs - get_shape_prop(sh); /* clone the shape (the resulting one is no longer hashed) */ sh = js_clone_shape(ctx, sh); if (!sh) return -1; js_free_shape(ctx->rt, p->shape); p->shape = sh; if (pprs) *pprs = get_shape_prop(sh) + idx; } else { js_shape_hash_unlink(ctx->rt, sh); sh->is_hashed = false; } } return 0; } static int js_update_property_flags(JSContext *ctx, JSObject *p, JSShapeProperty **pprs, int flags) { if (flags != (*pprs)->flags) { if (js_shape_prepare_update(ctx, p, pprs)) return -1; (*pprs)->flags = flags; } return 0; } /* allowed flags: JS_PROP_CONFIGURABLE, JS_PROP_WRITABLE, JS_PROP_ENUMERABLE JS_PROP_HAS_GET, JS_PROP_HAS_SET, JS_PROP_HAS_VALUE, JS_PROP_HAS_CONFIGURABLE, JS_PROP_HAS_WRITABLE, JS_PROP_HAS_ENUMERABLE, JS_PROP_THROW, JS_PROP_NO_EXOTIC. If JS_PROP_THROW is set, return an exception instead of false. if JS_PROP_NO_EXOTIC is set, do not call the exotic define_own_property callback. return -1 (exception), false or true. */ int JS_DefineProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; int mask, res; if (JS_VALUE_GET_TAG(this_obj) != JS_TAG_OBJECT) { JS_ThrowTypeErrorNotAnObject(ctx); return -1; } p = JS_VALUE_GET_OBJ(this_obj); redo_prop_update: prs = find_own_property(&pr, p, prop); if (prs) { /* the range of the Array length property is always tested before */ if ((prs->flags & JS_PROP_LENGTH) && (flags & JS_PROP_HAS_VALUE)) { uint32_t array_length; if (JS_ToArrayLengthFree(ctx, &array_length, js_dup(val), false)) { return -1; } /* this code relies on the fact that Uint32 are never allocated */ val = js_uint32(array_length); /* prs may have been modified */ prs = find_own_property(&pr, p, prop); assert(prs != NULL); } /* property already exists */ if (!check_define_prop_flags(prs->flags, flags)) { not_configurable: return JS_ThrowTypeErrorOrFalse(ctx, flags, "property is not configurable"); } if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { /* Instantiate property and retry */ if (JS_AutoInitProperty(ctx, p, prop, pr, prs)) return -1; goto redo_prop_update; } if (flags & (JS_PROP_HAS_VALUE | JS_PROP_HAS_WRITABLE | JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { JSObject *new_getter, *new_setter; if (JS_IsFunction(ctx, getter)) { new_getter = JS_VALUE_GET_OBJ(getter); } else { new_getter = NULL; } if (JS_IsFunction(ctx, setter)) { new_setter = JS_VALUE_GET_OBJ(setter); } else { new_setter = NULL; } if ((prs->flags & JS_PROP_TMASK) != JS_PROP_GETSET) { if (js_shape_prepare_update(ctx, p, &prs)) return -1; /* convert to getset */ if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { free_var_ref(ctx->rt, pr->u.var_ref); } else { JS_FreeValue(ctx, pr->u.value); } prs->flags = (prs->flags & (JS_PROP_CONFIGURABLE | JS_PROP_ENUMERABLE)) | JS_PROP_GETSET; pr->u.getset.getter = NULL; pr->u.getset.setter = NULL; } else { if (!(prs->flags & JS_PROP_CONFIGURABLE)) { if ((flags & JS_PROP_HAS_GET) && new_getter != pr->u.getset.getter) { goto not_configurable; } if ((flags & JS_PROP_HAS_SET) && new_setter != pr->u.getset.setter) { goto not_configurable; } } } if (flags & JS_PROP_HAS_GET) { if (pr->u.getset.getter) JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.getter)); if (new_getter) js_dup(getter); pr->u.getset.getter = new_getter; } if (flags & JS_PROP_HAS_SET) { if (pr->u.getset.setter) JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.setter)); if (new_setter) js_dup(setter); pr->u.getset.setter = new_setter; } } else { if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { /* convert to data descriptor */ if (js_shape_prepare_update(ctx, p, &prs)) return -1; if (pr->u.getset.getter) JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.getter)); if (pr->u.getset.setter) JS_FreeValue(ctx, JS_MKPTR(JS_TAG_OBJECT, pr->u.getset.setter)); prs->flags &= ~(JS_PROP_TMASK | JS_PROP_WRITABLE); pr->u.value = JS_UNDEFINED; } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { /* Note: JS_PROP_VARREF is always writable */ } else { if ((prs->flags & (JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE)) == 0 && (flags & JS_PROP_HAS_VALUE)) { if (!js_same_value(ctx, val, pr->u.value)) { goto not_configurable; } else { return true; } } } if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { if (flags & JS_PROP_HAS_VALUE) { if (p->class_id == JS_CLASS_MODULE_NS) { /* JS_PROP_WRITABLE is always true for variable references, but they are write protected in module name spaces. */ if (!js_same_value(ctx, val, *pr->u.var_ref->pvalue)) goto not_configurable; } /* update the reference */ set_value(ctx, pr->u.var_ref->pvalue, js_dup(val)); } /* if writable is set to false, no longer a reference (for mapped arguments) */ if ((flags & (JS_PROP_HAS_WRITABLE | JS_PROP_WRITABLE)) == JS_PROP_HAS_WRITABLE) { JSValue val1; if (js_shape_prepare_update(ctx, p, &prs)) return -1; val1 = js_dup(*pr->u.var_ref->pvalue); free_var_ref(ctx->rt, pr->u.var_ref); pr->u.value = val1; prs->flags &= ~(JS_PROP_TMASK | JS_PROP_WRITABLE); } } else if (prs->flags & JS_PROP_LENGTH) { if (flags & JS_PROP_HAS_VALUE) { /* Note: no JS code is executable because 'val' is guaranted to be a Uint32 */ res = set_array_length(ctx, p, js_dup(val), flags); } else { res = true; } /* still need to reset the writable flag if needed. The JS_PROP_LENGTH is kept because the Uint32 test is still done if the length property is read-only. */ if ((flags & (JS_PROP_HAS_WRITABLE | JS_PROP_WRITABLE)) == JS_PROP_HAS_WRITABLE) { prs = get_shape_prop(p->shape); if (js_update_property_flags(ctx, p, &prs, prs->flags & ~JS_PROP_WRITABLE)) return -1; } return res; } else { if (flags & JS_PROP_HAS_VALUE) { JS_FreeValue(ctx, pr->u.value); pr->u.value = js_dup(val); } if (flags & JS_PROP_HAS_WRITABLE) { if (js_update_property_flags(ctx, p, &prs, (prs->flags & ~JS_PROP_WRITABLE) | (flags & JS_PROP_WRITABLE))) return -1; } } } } mask = 0; if (flags & JS_PROP_HAS_CONFIGURABLE) mask |= JS_PROP_CONFIGURABLE; if (flags & JS_PROP_HAS_ENUMERABLE) mask |= JS_PROP_ENUMERABLE; if (js_update_property_flags(ctx, p, &prs, (prs->flags & ~mask) | (flags & mask))) return -1; return true; } /* handle modification of fast array elements */ if (p->fast_array) { uint32_t idx; uint32_t prop_flags; if (p->class_id == JS_CLASS_ARRAY) { if (__JS_AtomIsTaggedInt(prop)) { idx = __JS_AtomToUInt32(prop); if (idx < p->u.array.count) { prop_flags = get_prop_flags(flags, JS_PROP_C_W_E); if (prop_flags != JS_PROP_C_W_E) goto convert_to_slow_array; if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET)) { convert_to_slow_array: if (convert_fast_array_to_array(ctx, p)) return -1; else goto redo_prop_update; } if (flags & JS_PROP_HAS_VALUE) { set_value(ctx, &p->u.array.u.values[idx], js_dup(val)); } return true; } } } else if (is_typed_array(p->class_id)) { JSValue num; int ret; if (!__JS_AtomIsTaggedInt(prop)) { /* slow path with to handle all numeric indexes */ num = JS_AtomIsNumericIndex1(ctx, prop); if (JS_IsUndefined(num)) goto typed_array_done; if (JS_IsException(num)) return -1; ret = JS_NumberIsInteger(ctx, num); if (ret < 0) { JS_FreeValue(ctx, num); return -1; } if (!ret) { JS_FreeValue(ctx, num); return JS_ThrowTypeErrorOrFalse(ctx, flags, "non integer index in typed array"); } ret = JS_NumberIsNegativeOrMinusZero(ctx, num); JS_FreeValue(ctx, num); if (ret) { return JS_ThrowTypeErrorOrFalse(ctx, flags, "negative index in typed array"); } if (!__JS_AtomIsTaggedInt(prop)) goto typed_array_oob; } idx = __JS_AtomToUInt32(prop); /* if the typed array is detached, p->u.array.count = 0 */ if (idx >= typed_array_get_length(ctx, p)) { typed_array_oob: return JS_ThrowTypeErrorOrFalse(ctx, flags, "out-of-bound index in typed array"); } prop_flags = get_prop_flags(flags, JS_PROP_ENUMERABLE | JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); if (flags & (JS_PROP_HAS_GET | JS_PROP_HAS_SET) || prop_flags != (JS_PROP_ENUMERABLE | JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE)) { return JS_ThrowTypeErrorOrFalse(ctx, flags, "invalid descriptor flags"); } if (flags & JS_PROP_HAS_VALUE) { return JS_SetPropertyValue(ctx, this_obj, js_int32(idx), js_dup(val), flags); } return true; typed_array_done: ; } } return JS_CreateProperty(ctx, p, prop, val, getter, setter, flags); } static int JS_DefineAutoInitProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSAutoInitIDEnum id, void *opaque, int flags) { JSObject *p; JSProperty *pr; if (JS_VALUE_GET_TAG(this_obj) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(this_obj); if (find_own_property(&pr, p, prop)) { /* property already exists */ abort(); return false; } /* Specialized CreateProperty */ pr = add_property(ctx, p, prop, (flags & JS_PROP_C_W_E) | JS_PROP_AUTOINIT); if (unlikely(!pr)) return -1; pr->u.init.realm_and_id = (uintptr_t)JS_DupContext(ctx); assert((pr->u.init.realm_and_id & 3) == 0); assert(id <= 3); pr->u.init.realm_and_id |= id; pr->u.init.opaque = opaque; return true; } /* shortcut to add or redefine a new property value */ int JS_DefinePropertyValue(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue val, int flags) { int ret; ret = JS_DefineProperty(ctx, this_obj, prop, val, JS_UNDEFINED, JS_UNDEFINED, flags | JS_PROP_HAS_VALUE | JS_PROP_HAS_CONFIGURABLE | JS_PROP_HAS_WRITABLE | JS_PROP_HAS_ENUMERABLE); JS_FreeValue(ctx, val); return ret; } int JS_DefinePropertyValueValue(JSContext *ctx, JSValueConst this_obj, JSValue prop, JSValue val, int flags) { JSAtom atom; int ret; atom = JS_ValueToAtom(ctx, prop); JS_FreeValue(ctx, prop); if (unlikely(atom == JS_ATOM_NULL)) { JS_FreeValue(ctx, val); return -1; } ret = JS_DefinePropertyValue(ctx, this_obj, atom, val, flags); JS_FreeAtom(ctx, atom); return ret; } int JS_DefinePropertyValueUint32(JSContext *ctx, JSValueConst this_obj, uint32_t idx, JSValue val, int flags) { return JS_DefinePropertyValueValue(ctx, this_obj, js_uint32(idx), val, flags); } int JS_DefinePropertyValueInt64(JSContext *ctx, JSValueConst this_obj, int64_t idx, JSValue val, int flags) { return JS_DefinePropertyValueValue(ctx, this_obj, js_int64(idx), val, flags); } /* `prop` may be pure ASCII or UTF-8 encoded */ int JS_DefinePropertyValueStr(JSContext *ctx, JSValueConst this_obj, const char *prop, JSValue val, int flags) { JSAtom atom; int ret; atom = JS_NewAtom(ctx, prop); ret = JS_DefinePropertyValue(ctx, this_obj, atom, val, flags); JS_FreeAtom(ctx, atom); return ret; } /* shortcut to add getter & setter */ int JS_DefinePropertyGetSet(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValue getter, JSValue setter, int flags) { int ret; ret = JS_DefineProperty(ctx, this_obj, prop, JS_UNDEFINED, getter, setter, flags | JS_PROP_HAS_GET | JS_PROP_HAS_SET | JS_PROP_HAS_CONFIGURABLE | JS_PROP_HAS_ENUMERABLE); JS_FreeValue(ctx, getter); JS_FreeValue(ctx, setter); return ret; } static int JS_CreateDataPropertyUint32(JSContext *ctx, JSValueConst this_obj, int64_t idx, JSValue val, int flags) { return JS_DefinePropertyValueValue(ctx, this_obj, js_int64(idx), val, flags | JS_PROP_CONFIGURABLE | JS_PROP_ENUMERABLE | JS_PROP_WRITABLE); } /* return true if 'obj' has a non empty 'name' string */ static bool js_object_has_name(JSContext *ctx, JSValue obj) { JSProperty *pr; JSShapeProperty *prs; JSValue val; JSString *p; prs = find_own_property(&pr, JS_VALUE_GET_OBJ(obj), JS_ATOM_name); if (!prs) return false; if ((prs->flags & JS_PROP_TMASK) != JS_PROP_NORMAL) return true; val = pr->u.value; if (JS_VALUE_GET_TAG(val) != JS_TAG_STRING) return true; p = JS_VALUE_GET_STRING(val); return (p->len != 0); } static int JS_DefineObjectName(JSContext *ctx, JSValue obj, JSAtom name, int flags) { if (name != JS_ATOM_NULL && JS_IsObject(obj) && !js_object_has_name(ctx, obj) && JS_DefinePropertyValue(ctx, obj, JS_ATOM_name, JS_AtomToString(ctx, name), flags) < 0) { return -1; } return 0; } static int JS_DefineObjectNameComputed(JSContext *ctx, JSValue obj, JSValue str, int flags) { if (JS_IsObject(obj) && !js_object_has_name(ctx, obj)) { JSAtom prop; JSValue name_str; prop = JS_ValueToAtom(ctx, str); if (prop == JS_ATOM_NULL) return -1; name_str = js_get_function_name(ctx, prop); JS_FreeAtom(ctx, prop); if (JS_IsException(name_str)) return -1; if (JS_DefinePropertyValue(ctx, obj, JS_ATOM_name, name_str, flags) < 0) return -1; } return 0; } #define DEFINE_GLOBAL_LEX_VAR (1 << 7) #define DEFINE_GLOBAL_FUNC_VAR (1 << 6) static JSValue JS_ThrowSyntaxErrorVarRedeclaration(JSContext *ctx, JSAtom prop) { return JS_ThrowSyntaxErrorAtom(ctx, "redeclaration of '%s'", prop); } /* flags is 0, DEFINE_GLOBAL_LEX_VAR or DEFINE_GLOBAL_FUNC_VAR */ /* XXX: could support exotic global object. */ static int JS_CheckDefineGlobalVar(JSContext *ctx, JSAtom prop, int flags) { JSObject *p; JSShapeProperty *prs; p = JS_VALUE_GET_OBJ(ctx->global_obj); prs = find_own_property1(p, prop); /* XXX: should handle JS_PROP_AUTOINIT */ if (flags & DEFINE_GLOBAL_LEX_VAR) { if (prs && !(prs->flags & JS_PROP_CONFIGURABLE)) goto fail_redeclaration; } else { if (!prs && !p->extensible) goto define_error; if (flags & DEFINE_GLOBAL_FUNC_VAR) { if (prs) { if (!(prs->flags & JS_PROP_CONFIGURABLE) && ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET || ((prs->flags & (JS_PROP_WRITABLE | JS_PROP_ENUMERABLE)) != (JS_PROP_WRITABLE | JS_PROP_ENUMERABLE)))) { define_error: JS_ThrowTypeErrorAtom(ctx, "cannot define variable '%s'", prop); return -1; } } } } /* check if there already is a lexical declaration */ p = JS_VALUE_GET_OBJ(ctx->global_var_obj); prs = find_own_property1(p, prop); if (prs) { fail_redeclaration: JS_ThrowSyntaxErrorVarRedeclaration(ctx, prop); return -1; } return 0; } /* def_flags is (0, DEFINE_GLOBAL_LEX_VAR) | JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE */ /* XXX: could support exotic global object. */ static int JS_DefineGlobalVar(JSContext *ctx, JSAtom prop, int def_flags) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; JSValue val; int flags; if (def_flags & DEFINE_GLOBAL_LEX_VAR) { p = JS_VALUE_GET_OBJ(ctx->global_var_obj); flags = JS_PROP_ENUMERABLE | (def_flags & JS_PROP_WRITABLE) | JS_PROP_CONFIGURABLE; val = JS_UNINITIALIZED; } else { p = JS_VALUE_GET_OBJ(ctx->global_obj); flags = JS_PROP_ENUMERABLE | JS_PROP_WRITABLE | (def_flags & JS_PROP_CONFIGURABLE); val = JS_UNDEFINED; } prs = find_own_property1(p, prop); if (prs) return 0; if (!p->extensible) return 0; pr = add_property(ctx, p, prop, flags); if (unlikely(!pr)) return -1; pr->u.value = val; return 0; } /* 'def_flags' is 0 or JS_PROP_CONFIGURABLE. */ /* XXX: could support exotic global object. */ static int JS_DefineGlobalFunction(JSContext *ctx, JSAtom prop, JSValue func, int def_flags) { JSObject *p; JSShapeProperty *prs; int flags; p = JS_VALUE_GET_OBJ(ctx->global_obj); prs = find_own_property1(p, prop); flags = JS_PROP_HAS_VALUE | JS_PROP_THROW; if (!prs || (prs->flags & JS_PROP_CONFIGURABLE)) { flags |= JS_PROP_ENUMERABLE | JS_PROP_WRITABLE | def_flags | JS_PROP_HAS_CONFIGURABLE | JS_PROP_HAS_WRITABLE | JS_PROP_HAS_ENUMERABLE; } if (JS_DefineProperty(ctx, ctx->global_obj, prop, func, JS_UNDEFINED, JS_UNDEFINED, flags) < 0) return -1; return 0; } static JSValue JS_GetGlobalVar(JSContext *ctx, JSAtom prop, bool throw_ref_error) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; /* no exotic behavior is possible in global_var_obj */ p = JS_VALUE_GET_OBJ(ctx->global_var_obj); prs = find_own_property(&pr, p, prop); if (prs) { /* XXX: should handle JS_PROP_TMASK properties */ if (unlikely(JS_IsUninitialized(pr->u.value))) return JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return js_dup(pr->u.value); } return JS_GetPropertyInternal(ctx, ctx->global_obj, prop, ctx->global_obj, throw_ref_error); } /* construct a reference to a global variable */ static int JS_GetGlobalVarRef(JSContext *ctx, JSAtom prop, JSValue *sp) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; /* no exotic behavior is possible in global_var_obj */ p = JS_VALUE_GET_OBJ(ctx->global_var_obj); prs = find_own_property(&pr, p, prop); if (prs) { /* XXX: should handle JS_PROP_AUTOINIT properties? */ /* XXX: conformance: do these tests in OP_put_var_ref/OP_get_var_ref ? */ if (unlikely(JS_IsUninitialized(pr->u.value))) { JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return -1; } if (unlikely(!(prs->flags & JS_PROP_WRITABLE))) { return JS_ThrowTypeErrorReadOnly(ctx, JS_PROP_THROW, prop); } sp[0] = js_dup(ctx->global_var_obj); } else { int ret; ret = JS_HasProperty(ctx, ctx->global_obj, prop); if (ret < 0) return -1; if (ret) { sp[0] = js_dup(ctx->global_obj); } else { sp[0] = JS_UNDEFINED; } } sp[1] = JS_AtomToValue(ctx, prop); return 0; } /* use for strict variable access: test if the variable exists */ static int JS_CheckGlobalVar(JSContext *ctx, JSAtom prop) { JSObject *p; JSShapeProperty *prs; int ret; /* no exotic behavior is possible in global_var_obj */ p = JS_VALUE_GET_OBJ(ctx->global_var_obj); prs = find_own_property1(p, prop); if (prs) { ret = true; } else { ret = JS_HasProperty(ctx, ctx->global_obj, prop); if (ret < 0) return -1; } return ret; } /* flag = 0: normal variable write flag = 1: initialize lexical variable flag = 2: normal variable write, strict check was done before */ static int JS_SetGlobalVar(JSContext *ctx, JSAtom prop, JSValue val, int flag) { JSObject *p; JSShapeProperty *prs; JSProperty *pr; int flags; /* no exotic behavior is possible in global_var_obj */ p = JS_VALUE_GET_OBJ(ctx->global_var_obj); prs = find_own_property(&pr, p, prop); if (prs) { /* XXX: should handle JS_PROP_AUTOINIT properties? */ if (flag != 1) { if (unlikely(JS_IsUninitialized(pr->u.value))) { JS_FreeValue(ctx, val); JS_ThrowReferenceErrorUninitialized(ctx, prs->atom); return -1; } if (unlikely(!(prs->flags & JS_PROP_WRITABLE))) { JS_FreeValue(ctx, val); return JS_ThrowTypeErrorReadOnly(ctx, JS_PROP_THROW, prop); } } set_value(ctx, &pr->u.value, val); return 0; } flags = JS_PROP_THROW_STRICT; if (is_strict_mode(ctx)) flags |= JS_PROP_NO_ADD; return JS_SetPropertyInternal(ctx, ctx->global_obj, prop, val, flags); } /* return -1, false or true. return false if not configurable or invalid object. return -1 in case of exception. flags can be 0, JS_PROP_THROW or JS_PROP_THROW_STRICT */ int JS_DeleteProperty(JSContext *ctx, JSValueConst obj, JSAtom prop, int flags) { JSValue obj1; JSObject *p; int res; obj1 = JS_ToObject(ctx, obj); if (JS_IsException(obj1)) return -1; p = JS_VALUE_GET_OBJ(obj1); res = delete_property(ctx, p, prop); JS_FreeValue(ctx, obj1); if (res != false) return res; if ((flags & JS_PROP_THROW) || ((flags & JS_PROP_THROW_STRICT) && is_strict_mode(ctx))) { JS_ThrowTypeError(ctx, "could not delete property"); return -1; } return false; } int JS_DeletePropertyInt64(JSContext *ctx, JSValueConst obj, int64_t idx, int flags) { JSAtom prop; int res; if ((uint64_t)idx <= JS_ATOM_MAX_INT) { /* fast path for fast arrays */ return JS_DeleteProperty(ctx, obj, __JS_AtomFromUInt32(idx), flags); } prop = JS_NewAtomInt64(ctx, idx); if (prop == JS_ATOM_NULL) return -1; res = JS_DeleteProperty(ctx, obj, prop, flags); JS_FreeAtom(ctx, prop); return res; } bool JS_IsFunction(JSContext *ctx, JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(val); switch(p->class_id) { case JS_CLASS_BYTECODE_FUNCTION: return true; case JS_CLASS_PROXY: return p->u.proxy_data->is_func; default: return (ctx->rt->class_array[p->class_id].call != NULL); } } static bool JS_IsCFunction(JSContext *ctx, JSValueConst val, JSCFunction *func, int magic) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(val); if (p->class_id == JS_CLASS_C_FUNCTION) return (p->u.cfunc.c_function.generic == func && p->u.cfunc.magic == magic); else return false; } bool JS_IsConstructor(JSContext *ctx, JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(val); return p->is_constructor; } bool JS_SetConstructorBit(JSContext *ctx, JSValueConst func_obj, bool val) { JSObject *p; if (JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(func_obj); p->is_constructor = val; return true; } bool JS_IsRegExp(JSValueConst val) { if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; return JS_VALUE_GET_OBJ(val)->class_id == JS_CLASS_REGEXP; } bool JS_IsMap(JSValueConst val) { if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; return JS_VALUE_GET_OBJ(val)->class_id == JS_CLASS_MAP; } bool JS_IsError(JSContext *ctx, JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(val); return (p->class_id == JS_CLASS_ERROR); } /* used to avoid catching interrupt exceptions */ bool JS_IsUncatchableError(JSContext *ctx, JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(val); return p->class_id == JS_CLASS_ERROR && p->is_uncatchable_error; } static void js_set_uncatchable_error(JSContext *ctx, JSValueConst val, bool flag) { JSObject *p; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return; p = JS_VALUE_GET_OBJ(val); if (p->class_id == JS_CLASS_ERROR) p->is_uncatchable_error = flag; } void JS_SetUncatchableError(JSContext *ctx, JSValueConst val) { js_set_uncatchable_error(ctx, val, true); } void JS_ClearUncatchableError(JSContext *ctx, JSValueConst val) { js_set_uncatchable_error(ctx, val, false); } void JS_ResetUncatchableError(JSContext *ctx) { js_set_uncatchable_error(ctx, ctx->rt->current_exception, false); } int JS_SetOpaque(JSValueConst obj, void *opaque) { JSObject *p; if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { p = JS_VALUE_GET_OBJ(obj); // User code can't set the opaque of internal objects. if (p->class_id >= JS_CLASS_INIT_COUNT) { p->u.opaque = opaque; return 0; } } return -1; } /* |obj| must be a JSObject of an internal class. */ static void JS_SetOpaqueInternal(JSValueConst obj, void *opaque) { JSObject *p; assert(JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT); p = JS_VALUE_GET_OBJ(obj); assert(p->class_id < JS_CLASS_INIT_COUNT); p->u.opaque = opaque; } /* return NULL if not an object of class class_id */ void *JS_GetOpaque(JSValueConst obj, JSClassID class_id) { JSObject *p; if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) return NULL; p = JS_VALUE_GET_OBJ(obj); if (p->class_id != class_id) return NULL; return p->u.opaque; } void *JS_GetOpaque2(JSContext *ctx, JSValueConst obj, JSClassID class_id) { void *p = JS_GetOpaque(obj, class_id); if (unlikely(!p)) { JS_ThrowTypeErrorInvalidClass(ctx, class_id); } return p; } void *JS_GetAnyOpaque(JSValueConst obj, JSClassID *class_id) { JSObject *p; if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) { *class_id = 0; return NULL; } p = JS_VALUE_GET_OBJ(obj); *class_id = p->class_id; return p->u.opaque; } static JSValue JS_ToPrimitiveFree(JSContext *ctx, JSValue val, int hint) { int i; bool force_ordinary; JSAtom method_name; JSValue method, ret; if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT) return val; force_ordinary = hint & HINT_FORCE_ORDINARY; hint &= ~HINT_FORCE_ORDINARY; if (!force_ordinary) { method = JS_GetProperty(ctx, val, JS_ATOM_Symbol_toPrimitive); if (JS_IsException(method)) goto exception; /* ECMA says *If exoticToPrim is not undefined* but tests in test262 use null as a non callable converter */ if (!JS_IsUndefined(method) && !JS_IsNull(method)) { JSAtom atom; JSValue arg; switch(hint) { case HINT_STRING: atom = JS_ATOM_string; break; case HINT_NUMBER: atom = JS_ATOM_number; break; default: case HINT_NONE: atom = JS_ATOM_default; break; } arg = JS_AtomToString(ctx, atom); ret = JS_CallFree(ctx, method, val, 1, vc(&arg)); JS_FreeValue(ctx, arg); if (JS_IsException(ret)) goto exception; JS_FreeValue(ctx, val); if (JS_VALUE_GET_TAG(ret) != JS_TAG_OBJECT) return ret; JS_FreeValue(ctx, ret); return JS_ThrowTypeError(ctx, "toPrimitive"); } } if (hint != HINT_STRING) hint = HINT_NUMBER; for(i = 0; i < 2; i++) { if ((i ^ hint) == 0) { method_name = JS_ATOM_toString; } else { method_name = JS_ATOM_valueOf; } method = JS_GetProperty(ctx, val, method_name); if (JS_IsException(method)) goto exception; if (JS_IsFunction(ctx, method)) { ret = JS_CallFree(ctx, method, val, 0, NULL); if (JS_IsException(ret)) goto exception; if (JS_VALUE_GET_TAG(ret) != JS_TAG_OBJECT) { JS_FreeValue(ctx, val); return ret; } JS_FreeValue(ctx, ret); } else { JS_FreeValue(ctx, method); } } JS_ThrowTypeError(ctx, "toPrimitive"); exception: JS_FreeValue(ctx, val); return JS_EXCEPTION; } static JSValue JS_ToPrimitive(JSContext *ctx, JSValueConst val, int hint) { return JS_ToPrimitiveFree(ctx, js_dup(val), hint); } void JS_SetIsHTMLDDA(JSContext *ctx, JSValueConst obj) { JSObject *p; if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) return; p = JS_VALUE_GET_OBJ(obj); p->is_HTMLDDA = true; } static inline bool JS_IsHTMLDDA(JSContext *ctx, JSValueConst obj) { JSObject *p; if (JS_VALUE_GET_TAG(obj) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(obj); return p->is_HTMLDDA; } static int JS_ToBoolFree(JSContext *ctx, JSValue val) { uint32_t tag = JS_VALUE_GET_TAG(val); switch(tag) { case JS_TAG_INT: return JS_VALUE_GET_INT(val) != 0; case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: return JS_VALUE_GET_INT(val); case JS_TAG_EXCEPTION: return -1; case JS_TAG_STRING: { bool ret = JS_VALUE_GET_STRING(val)->len != 0; JS_FreeValue(ctx, val); return ret; } case JS_TAG_BIG_INT: { JSBigInt *p = JS_VALUE_GET_PTR(val); bool ret; ret = p->num.expn != BF_EXP_ZERO && p->num.expn != BF_EXP_NAN; JS_FreeValue(ctx, val); return ret; } case JS_TAG_OBJECT: { JSObject *p = JS_VALUE_GET_OBJ(val); bool ret = !p->is_HTMLDDA; JS_FreeValue(ctx, val); return ret; } break; default: if (JS_TAG_IS_FLOAT64(tag)) { double d = JS_VALUE_GET_FLOAT64(val); return !isnan(d) && d != 0; } else { JS_FreeValue(ctx, val); return true; } } } int JS_ToBool(JSContext *ctx, JSValueConst val) { return JS_ToBoolFree(ctx, js_dup(val)); } /* pc points to pure ASCII or UTF-8, null terminated contents */ static int skip_spaces(const char *pc) { const uint8_t *p, *p_next, *p_start; uint32_t c; p = p_start = (const uint8_t *)pc; for (;;) { c = *p++; if (c < 0x80) { if (!((c >= 0x09 && c <= 0x0d) || (c == 0x20))) break; } else { c = utf8_decode(p - 1, &p_next); /* no need to test for invalid UTF-8, 0xFFFD is not a space */ if (!lre_is_space(c)) break; p = p_next; } } return p - 1 - p_start; } static inline int to_digit(int c) { if (c >= '0' && c <= '9') return c - '0'; else if (c >= 'A' && c <= 'Z') return c - 'A' + 10; else if (c >= 'a' && c <= 'z') return c - 'a' + 10; else return 36; } /* XXX: remove */ static double js_strtod(const char *str, int radix, bool is_float) { double d; int c; if (!is_float || radix != 10) { const char *p = str; uint64_t n_max, n; int int_exp, is_neg; is_neg = 0; if (*p == '-') { is_neg = 1; p++; } /* skip leading zeros */ while (*p == '0') p++; n = 0; if (radix == 10) n_max = ((uint64_t)-1 - 9) / 10; /* most common case */ else n_max = ((uint64_t)-1 - (radix - 1)) / radix; /* XXX: could be more precise */ int_exp = 0; while ((c = to_digit(*p)) < radix) { if (n <= n_max) { n = n * radix + c; } else { if (radix == 10) goto strtod_case; int_exp++; } p++; } d = n; if (int_exp != 0) { d *= pow(radix, int_exp); } if (is_neg) d = -d; } else { strtod_case: d = strtod(str, NULL); } return d; } static JSValue js_string_to_bigint(JSContext *ctx, const char *buf, int radix) { bf_t *a; int ret; JSValue val; val = JS_NewBigInt(ctx); if (JS_IsException(val)) return val; a = JS_GetBigInt(val); ret = bf_atof(a, buf, NULL, radix, BF_PREC_INF, BF_RNDZ); if (ret & BF_ST_MEM_ERROR) { JS_FreeValue(ctx, val); return JS_ThrowOutOfMemory(ctx); } return JS_CompactBigInt1(ctx, val); } /* `js_atof(ctx, p, len, pp, radix, flags)` Convert the string pointed to by `p` to a number value. Return an exception in case of memory error. Return `JS_NAN` if invalid syntax. - `p` points to a null terminated UTF-8 encoded char array, - `len` the length of the array, - `pp` if not null receives a pointer to the next character, - `radix` must be in range 2 to 36, else return `JS_NAN`. - `flags` is a combination of the flags below. There is a null byte at `p[len]`, but there might be embedded null bytes between `p[0]` and `p[len]` which must produce `JS_NAN` if the `ATOD_NO_TRAILING_CHARS` flag is present. */ #define ATOD_TRIM_SPACES (1 << 0) /* trim white space */ #define ATOD_ACCEPT_EMPTY (1 << 1) /* accept an empty string, value is 0 */ #define ATOD_ACCEPT_FLOAT (1 << 2) /* parse decimal floating point syntax */ #define ATOD_ACCEPT_INFINITY (1 << 3) /* parse Infinity as a float point number */ #define ATOD_ACCEPT_BIN_OCT (1 << 4) /* accept 0o and 0b prefixes */ #define ATOD_ACCEPT_HEX_PREFIX (1 << 5) /* accept 0x prefix for radix 16 */ #define ATOD_ACCEPT_UNDERSCORES (1 << 6) /* accept _ between digits as a digit separator */ #define ATOD_ACCEPT_SUFFIX (1 << 7) /* allow 'n' suffix to produce BigInt */ #define ATOD_WANT_BIG_INT (1 << 8) /* return type must be BigInt */ #define ATOD_DECIMAL_AFTER_SIGN (1 << 9) /* only accept decimal number after sign */ #define ATOD_NO_TRAILING_CHARS (1 << 10) /* do not accept trailing characters */ static JSValue js_atof(JSContext *ctx, const char *p, size_t len, const char **pp, int radix, int flags) { const char *p_start; const char *end = p + len; int sep; bool is_float; char buf1[64], *buf = buf1; size_t i, j; JSValue val = JS_NAN; double d; char sign; if (radix < 2 || radix > 36) goto done; /* optional separator between digits */ sep = (flags & ATOD_ACCEPT_UNDERSCORES) ? '_' : 256; sign = 0; if (flags & ATOD_TRIM_SPACES) p += skip_spaces(p); if (p == end && (flags & ATOD_ACCEPT_EMPTY)) { if (pp) *pp = p; if (flags & ATOD_WANT_BIG_INT) return JS_NewBigInt64(ctx, 0); else return js_int32(0); } if (*p == '+' || *p == '-') { sign = *p; p++; if (flags & ATOD_DECIMAL_AFTER_SIGN) flags &= ~(ATOD_ACCEPT_HEX_PREFIX | ATOD_ACCEPT_BIN_OCT); } if (p[0] == '0') { if ((p[1] == 'x' || p[1] == 'X') && ((flags & ATOD_ACCEPT_HEX_PREFIX) || radix == 16)) { p += 2; radix = 16; } else if (flags & ATOD_ACCEPT_BIN_OCT) { if (p[1] == 'o' || p[1] == 'O') { p += 2; radix = 8; } else if (p[1] == 'b' || p[1] == 'B') { p += 2; radix = 2; } } } else { if (*p == 'I' && (flags & ATOD_ACCEPT_INFINITY) && js__strstart(p, "Infinity", &p)) { d = INF; if (sign == '-') d = -d; val = js_float64(d); goto done; } } is_float = false; p_start = p; while (to_digit(*p) < radix) { p++; if (*p == sep && to_digit(p[1]) < radix) p++; } if ((flags & ATOD_ACCEPT_FLOAT) && radix == 10) { if (*p == '.' && (p > p_start || to_digit(p[1]) < radix)) { is_float = true; p++; while (to_digit(*p) < radix) { p++; if (*p == sep && to_digit(p[1]) < radix) p++; } } if (p > p_start && (*p == 'e' || *p == 'E')) { i = 1; if (p[1] == '+' || p[1] == '-') { i++; } if (is_digit(p[i])) { is_float = true; p += i + 1; while (is_digit(*p) || (*p == sep && is_digit(p[1]))) p++; } } } if (p == p_start) goto done; len = p - p_start; if (unlikely((len + 2) > sizeof(buf1))) { buf = js_malloc_rt(ctx->rt, len + 2); /* no exception raised */ if (!buf) { if (pp) *pp = p; return JS_ThrowOutOfMemory(ctx); } } /* remove the separators and the radix prefix */ j = 0; if (sign == '-') buf[j++] = '-'; for (i = 0; i < len; i++) { if (p_start[i] != '_') buf[j++] = p_start[i]; } buf[j] = '\0'; if (flags & ATOD_ACCEPT_SUFFIX) { if (*p == 'n') { p++; flags |= ATOD_WANT_BIG_INT; } } if (flags & ATOD_WANT_BIG_INT) { if (!is_float) val = js_string_to_bigint(ctx, buf, radix); } else { d = js_strtod(buf, radix, is_float); val = js_number(d); /* return int or float64 */ } done: if (flags & ATOD_NO_TRAILING_CHARS) { if (flags & ATOD_TRIM_SPACES) p += skip_spaces(p); if (p != end) { JS_FreeValue(ctx, val); val = JS_NAN; } } if (buf != buf1) js_free_rt(ctx->rt, buf); if (pp) *pp = p; return val; } typedef enum JSToNumberHintEnum { TON_FLAG_NUMBER, TON_FLAG_NUMERIC, } JSToNumberHintEnum; static JSValue JS_ToNumberHintFree(JSContext *ctx, JSValue val, JSToNumberHintEnum flag) { uint32_t tag; JSValue ret; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_BIG_INT: if (flag != TON_FLAG_NUMERIC) { JS_FreeValue(ctx, val); return JS_ThrowTypeError(ctx, "cannot convert BigInt to number"); } ret = val; break; case JS_TAG_FLOAT64: case JS_TAG_INT: case JS_TAG_EXCEPTION: ret = val; break; case JS_TAG_BOOL: case JS_TAG_NULL: ret = js_int32(JS_VALUE_GET_INT(val)); break; case JS_TAG_UNDEFINED: ret = JS_NAN; break; case JS_TAG_OBJECT: val = JS_ToPrimitiveFree(ctx, val, HINT_NUMBER); if (JS_IsException(val)) return JS_EXCEPTION; goto redo; case JS_TAG_STRING: { const char *str; size_t len; int flags; str = JS_ToCStringLen(ctx, &len, val); JS_FreeValue(ctx, val); if (!str) return JS_EXCEPTION; flags = ATOD_TRIM_SPACES | ATOD_ACCEPT_EMPTY | ATOD_ACCEPT_FLOAT | ATOD_ACCEPT_INFINITY | ATOD_ACCEPT_HEX_PREFIX | ATOD_ACCEPT_BIN_OCT | ATOD_DECIMAL_AFTER_SIGN | ATOD_NO_TRAILING_CHARS; ret = js_atof(ctx, str, len, NULL, 10, flags); JS_FreeCString(ctx, str); } break; case JS_TAG_SYMBOL: JS_FreeValue(ctx, val); return JS_ThrowTypeError(ctx, "cannot convert symbol to number"); default: JS_FreeValue(ctx, val); ret = JS_NAN; break; } return ret; } static JSValue JS_ToNumberFree(JSContext *ctx, JSValue val) { return JS_ToNumberHintFree(ctx, val, TON_FLAG_NUMBER); } static JSValue JS_ToNumericFree(JSContext *ctx, JSValue val) { return JS_ToNumberHintFree(ctx, val, TON_FLAG_NUMERIC); } static JSValue JS_ToNumeric(JSContext *ctx, JSValueConst val) { return JS_ToNumericFree(ctx, js_dup(val)); } static __exception int __JS_ToFloat64Free(JSContext *ctx, double *pres, JSValue val) { double d; uint32_t tag; val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = NAN; return -1; } tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: d = JS_VALUE_GET_INT(val); break; case JS_TAG_FLOAT64: d = JS_VALUE_GET_FLOAT64(val); break; case JS_TAG_BIG_INT: { JSBigInt *p = JS_VALUE_GET_PTR(val); /* XXX: there can be a double rounding issue with some primitives (such as JS_ToUint8ClampFree()), but it is not critical to fix it. */ bf_get_float64(&p->num, &d, BF_RNDN); JS_FreeValue(ctx, val); } break; default: abort(); } *pres = d; return 0; } static inline int JS_ToFloat64Free(JSContext *ctx, double *pres, JSValue val) { uint32_t tag; tag = JS_VALUE_GET_TAG(val); if (tag <= JS_TAG_NULL) { *pres = JS_VALUE_GET_INT(val); return 0; } else if (JS_TAG_IS_FLOAT64(tag)) { *pres = JS_VALUE_GET_FLOAT64(val); return 0; } else { return __JS_ToFloat64Free(ctx, pres, val); } } int JS_ToFloat64(JSContext *ctx, double *pres, JSValueConst val) { return JS_ToFloat64Free(ctx, pres, js_dup(val)); } JSValue JS_ToNumber(JSContext *ctx, JSValueConst val) { return JS_ToNumberFree(ctx, js_dup(val)); } /* same as JS_ToNumber() but return 0 in case of NaN/Undefined */ static __maybe_unused JSValue JS_ToIntegerFree(JSContext *ctx, JSValue val) { uint32_t tag; JSValue ret; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: ret = js_int32(JS_VALUE_GET_INT(val)); break; case JS_TAG_FLOAT64: { double d = JS_VALUE_GET_FLOAT64(val); if (isnan(d)) { ret = js_int32(0); } else { /* convert -0 to +0 */ d = trunc(d) + 0.0; ret = js_number(d); } } break; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) return val; goto redo; } return ret; } /* Note: the integer value is satured to 32 bits */ static int JS_ToInt32SatFree(JSContext *ctx, int *pres, JSValue val) { uint32_t tag; int ret; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: ret = JS_VALUE_GET_INT(val); break; case JS_TAG_EXCEPTION: *pres = 0; return -1; case JS_TAG_FLOAT64: { double d = JS_VALUE_GET_FLOAT64(val); if (isnan(d)) { ret = 0; } else { if (d < INT32_MIN) ret = INT32_MIN; else if (d > INT32_MAX) ret = INT32_MAX; else ret = (int)d; } } break; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = 0; return -1; } goto redo; } *pres = ret; return 0; } static int JS_ToInt32Sat(JSContext *ctx, int *pres, JSValueConst val) { return JS_ToInt32SatFree(ctx, pres, js_dup(val)); } static int JS_ToInt32Clamp(JSContext *ctx, int *pres, JSValueConst val, int min, int max, int min_offset) { int res = JS_ToInt32SatFree(ctx, pres, js_dup(val)); if (res == 0) { if (*pres < min) { *pres += min_offset; if (*pres < min) *pres = min; } else { if (*pres > max) *pres = max; } } return res; } static int JS_ToInt64SatFree(JSContext *ctx, int64_t *pres, JSValue val) { uint32_t tag; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: *pres = JS_VALUE_GET_INT(val); return 0; case JS_TAG_EXCEPTION: *pres = 0; return -1; case JS_TAG_FLOAT64: { double d = JS_VALUE_GET_FLOAT64(val); if (isnan(d)) { *pres = 0; } else { if (d < INT64_MIN) *pres = INT64_MIN; else if (d >= 0x1p63) *pres = INT64_MAX; else *pres = (int64_t)d; } } return 0; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = 0; return -1; } goto redo; } } int JS_ToInt64Sat(JSContext *ctx, int64_t *pres, JSValueConst val) { return JS_ToInt64SatFree(ctx, pres, js_dup(val)); } int JS_ToInt64Clamp(JSContext *ctx, int64_t *pres, JSValueConst val, int64_t min, int64_t max, int64_t neg_offset) { int res = JS_ToInt64SatFree(ctx, pres, js_dup(val)); if (res == 0) { if (*pres < 0) *pres += neg_offset; if (*pres < min) *pres = min; else if (*pres > max) *pres = max; } return res; } /* Same as JS_ToInt32Free() but with a 64 bit result. Return (<0, 0) in case of exception */ static int JS_ToInt64Free(JSContext *ctx, int64_t *pres, JSValue val) { uint32_t tag; int64_t ret; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: ret = JS_VALUE_GET_INT(val); break; case JS_TAG_FLOAT64: { JSFloat64Union u; double d; int e; d = JS_VALUE_GET_FLOAT64(val); u.d = d; /* we avoid doing fmod(x, 2^64) */ e = (u.u64 >> 52) & 0x7ff; if (likely(e <= (1023 + 62))) { /* fast case */ ret = (int64_t)d; } else if (e <= (1023 + 62 + 53)) { uint64_t v; /* remainder modulo 2^64 */ v = (u.u64 & (((uint64_t)1 << 52) - 1)) | ((uint64_t)1 << 52); ret = v << ((e - 1023) - 52); /* take the sign into account */ if (u.u64 >> 63) if (ret != INT64_MIN) ret = -ret; } else { ret = 0; /* also handles NaN and +inf */ } } break; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = 0; return -1; } goto redo; } *pres = ret; return 0; } int JS_ToInt64(JSContext *ctx, int64_t *pres, JSValueConst val) { return JS_ToInt64Free(ctx, pres, js_dup(val)); } int JS_ToInt64Ext(JSContext *ctx, int64_t *pres, JSValueConst val) { if (JS_IsBigInt(ctx, val)) return JS_ToBigInt64(ctx, pres, val); else return JS_ToInt64(ctx, pres, val); } /* return (<0, 0) in case of exception */ static int JS_ToInt32Free(JSContext *ctx, int32_t *pres, JSValue val) { uint32_t tag; int32_t ret; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: ret = JS_VALUE_GET_INT(val); break; case JS_TAG_FLOAT64: { JSFloat64Union u; double d; int e; d = JS_VALUE_GET_FLOAT64(val); u.d = d; /* we avoid doing fmod(x, 2^32) */ e = (u.u64 >> 52) & 0x7ff; if (likely(e <= (1023 + 30))) { /* fast case */ ret = (int32_t)d; } else if (e <= (1023 + 30 + 53)) { uint64_t v; /* remainder modulo 2^32 */ v = (u.u64 & (((uint64_t)1 << 52) - 1)) | ((uint64_t)1 << 52); v = v << ((e - 1023) - 52 + 32); ret = v >> 32; /* take the sign into account */ if (u.u64 >> 63) if (ret != INT32_MIN) ret = -ret; } else { ret = 0; /* also handles NaN and +inf */ } } break; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = 0; return -1; } goto redo; } *pres = ret; return 0; } int JS_ToInt32(JSContext *ctx, int32_t *pres, JSValueConst val) { return JS_ToInt32Free(ctx, pres, js_dup(val)); } static inline int JS_ToUint32Free(JSContext *ctx, uint32_t *pres, JSValue val) { return JS_ToInt32Free(ctx, (int32_t *)pres, val); } static int JS_ToUint8ClampFree(JSContext *ctx, int32_t *pres, JSValue val) { uint32_t tag; int res; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: case JS_TAG_UNDEFINED: res = JS_VALUE_GET_INT(val); res = max_int(0, min_int(255, res)); break; case JS_TAG_FLOAT64: { double d = JS_VALUE_GET_FLOAT64(val); if (isnan(d)) { res = 0; } else { if (d < 0) res = 0; else if (d > 255) res = 255; else res = lrint(d); } } break; default: val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) { *pres = 0; return -1; } goto redo; } *pres = res; return 0; } static __exception int JS_ToArrayLengthFree(JSContext *ctx, uint32_t *plen, JSValue val, bool is_array_ctor) { uint32_t tag, len; tag = JS_VALUE_GET_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: { int v; v = JS_VALUE_GET_INT(val); if (v < 0) goto fail; len = v; } break; case JS_TAG_BIG_INT: { JSBigInt *p = JS_VALUE_GET_PTR(val); bf_t a; bool res; bf_get_int32((int32_t *)&len, &p->num, BF_GET_INT_MOD); bf_init(ctx->bf_ctx, &a); bf_set_ui(&a, len); res = bf_cmp_eq(&a, &p->num); bf_delete(&a); JS_FreeValue(ctx, val); if (!res) goto fail; } break; default: if (JS_TAG_IS_FLOAT64(tag)) { double d; d = JS_VALUE_GET_FLOAT64(val); if (!(d >= 0 && d <= UINT32_MAX)) goto fail; len = (uint32_t)d; if (len != d) goto fail; } else { uint32_t len1; if (is_array_ctor) { val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) return -1; /* cannot recurse because val is a number */ if (JS_ToArrayLengthFree(ctx, &len, val, true)) return -1; } else { /* legacy behavior: must do the conversion twice and compare */ if (JS_ToUint32(ctx, &len, val)) { JS_FreeValue(ctx, val); return -1; } val = JS_ToNumberFree(ctx, val); if (JS_IsException(val)) return -1; /* cannot recurse because val is a number */ if (JS_ToArrayLengthFree(ctx, &len1, val, false)) return -1; if (len1 != len) { fail: JS_ThrowRangeError(ctx, "invalid array length"); return -1; } } } break; } *plen = len; return 0; } #define MAX_SAFE_INTEGER (((int64_t)1 << 53) - 1) static bool is_safe_integer(double d) { return isfinite(d) && floor(d) == d && fabs(d) <= (double)MAX_SAFE_INTEGER; } int JS_ToIndex(JSContext *ctx, uint64_t *plen, JSValueConst val) { int64_t v; if (JS_ToInt64Sat(ctx, &v, val)) return -1; if (v < 0 || v > MAX_SAFE_INTEGER) { JS_ThrowRangeError(ctx, "invalid array index"); *plen = 0; return -1; } *plen = v; return 0; } /* convert a value to a length between 0 and MAX_SAFE_INTEGER. return -1 for exception */ static __exception int JS_ToLengthFree(JSContext *ctx, int64_t *plen, JSValue val) { int res = JS_ToInt64Clamp(ctx, plen, val, 0, MAX_SAFE_INTEGER, 0); JS_FreeValue(ctx, val); return res; } /* Note: can return an exception */ static int JS_NumberIsInteger(JSContext *ctx, JSValueConst val) { double d; if (!JS_IsNumber(val)) return false; if (unlikely(JS_ToFloat64(ctx, &d, val))) return -1; return isfinite(d) && floor(d) == d; } static bool JS_NumberIsNegativeOrMinusZero(JSContext *ctx, JSValueConst val) { uint32_t tag; tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: { int v; v = JS_VALUE_GET_INT(val); return (v < 0); } case JS_TAG_FLOAT64: { JSFloat64Union u; u.d = JS_VALUE_GET_FLOAT64(val); return (u.u64 >> 63); } case JS_TAG_BIG_INT: { JSBigInt *p = JS_VALUE_GET_PTR(val); /* Note: integer zeros are not necessarily positive */ return p->num.sign && !bf_is_zero(&p->num); } default: return false; } } static JSValue js_bigint_to_string1(JSContext *ctx, JSValueConst val, int radix) { JSValue ret; bf_t a_s, *a; char *str; int saved_sign; size_t len; a = JS_ToBigInt(ctx, &a_s, val); if (!a) return JS_EXCEPTION; saved_sign = a->sign; if (a->expn == BF_EXP_ZERO) a->sign = 0; str = bf_ftoa(&len, a, radix, 0, BF_RNDZ | BF_FTOA_FORMAT_FRAC | BF_FTOA_JS_QUIRKS); a->sign = saved_sign; JS_FreeBigInt(ctx, a, &a_s); if (!str) return JS_ThrowOutOfMemory(ctx); ret = js_new_string8_len(ctx, str, len); bf_free(ctx->bf_ctx, str); return ret; } static JSValue js_bigint_to_string(JSContext *ctx, JSValueConst val) { return js_bigint_to_string1(ctx, val, 10); } /*---- floating point number to string conversions ----*/ /* JavaScript rounding is specified as round to nearest tie away from zero (RNDNA), but in `printf` the "ties" case is not specified (in most cases it is RNDN, round to nearest, tie to even), so we must round manually. We generate 2 extra places and make an extra call to snprintf if these are exactly '50'. We set the current rounding mode to FE_DOWNWARD to check if the last 2 places become '49'. If not, we must round up, which is performed in place using the string digits. Note that we cannot rely on snprintf for rounding up: the code below fails on macOS for `0.5.toFixed(0)`: gives `0` expected `1` fesetround(FE_UPWARD); snprintf(dest, size, "%.*f", n_digits, d); fesetround(FE_TONEAREST); */ /* `js_fcvt` minimum buffer length: - up to 21 digits in integral part - 1 potential decimal point - up to 102 decimals - 1 null terminator */ #define JS_FCVT_BUF_SIZE (21+1+102+1) /* `js_ecvt` minimum buffer length: - 1 leading digit - 1 potential decimal point - up to 102 decimals - 5 exponent characters (from 'e-324' to 'e+308') - 1 null terminator */ #define JS_ECVT_BUF_SIZE (1+1+102+5+1) /* `js_dtoa` minimum buffer length: - 8 byte prefix - either JS_FCVT_BUF_SIZE or JS_ECVT_BUF_SIZE - JS_FCVT_BUF_SIZE is larger than JS_ECVT_BUF_SIZE */ #define JS_DTOA_BUF_SIZE (8+JS_FCVT_BUF_SIZE) /* `js_ecvt1`: compute the digits and decimal point spot for a double - `d` is finite, positive or zero - `n_digits` number of significant digits in range 1..103 - `buf` receives the printf result - `buf` has a fixed format: n_digits with a decimal point at offset 1 and exponent 'e{+/-}xx[x]' at offset n_digits+1 Return n_digits Store the position of the decimal point into `*decpt` */ static int js_ecvt1(double d, int n_digits, char dest[minimum_length(JS_ECVT_BUF_SIZE)], size_t size, int *decpt) { /* d is positive, ensure decimal point is always present */ snprintf(dest, size, "%#.*e", n_digits - 1, d); /* dest contents: 0: first digit 1: '.' decimal point (locale specific) 2..n_digits: (n_digits-1) additional digits n_digits+1: 'e' exponent mark n_digits+2..: exponent sign, value and null terminator */ /* extract the exponent (actually the position of the decimal point) */ *decpt = 1 + atoi(dest + n_digits + 2); return n_digits; } /* `js_ecvt`: compute the digits and decimal point spot for a double with proper javascript rounding. We cannot use `ecvt` for multiple resasons: portability, because of the number of digits is typically limited to 17, finally because the default rounding is inadequate. `d` is finite and positive or zero. `n_digits` number of significant digits in range 1..101 or 0 for automatic (only as many digits as necessary) Return the number of digits produced in `dest`. Store the position of the decimal point into `*decpt` */ static int js_ecvt(double d, int n_digits, char dest[minimum_length(JS_ECVT_BUF_SIZE)], size_t size, int *decpt) { if (n_digits == 0) { /* find the minimum number of digits (XXX: inefficient but simple) */ // TODO(chqrlie) use direct method from quickjs-printf unsigned int n_digits_min = 1; unsigned int n_digits_max = 17; for (;;) { n_digits = (n_digits_min + n_digits_max) / 2; js_ecvt1(d, n_digits, dest, size, decpt); if (n_digits_min == n_digits_max) return n_digits; /* dest contents: 0: first digit 1: '.' decimal point (locale specific) 2..n_digits: (n_digits-1) additional digits n_digits+1: 'e' exponent mark n_digits+2..: exponent sign, value and null terminator */ if (strtod(dest, NULL) == d) { unsigned int n0 = n_digits; /* enough digits */ /* strip the trailing zeros */ while (dest[n_digits] == '0') n_digits--; if (n_digits == n_digits_min) return n_digits; /* done if trailing zeros and not denormal or huge */ if (n_digits < n0 && d > 3e-308 && d < 8e307) return n_digits; n_digits_max = n_digits; } else { /* need at least one more digit */ n_digits_min = n_digits + 1; } } } else { #if defined(FE_DOWNWARD) && defined(FE_TONEAREST) int i; /* generate 2 extra digits: 99% chances to avoid 2 calls */ js_ecvt1(d, n_digits + 2, dest, size, decpt); if (dest[n_digits + 1] < '5') return n_digits; /* truncate the 2 extra digits */ if (dest[n_digits + 1] == '5' && dest[n_digits + 2] == '0') { /* close to half-way: try rounding toward 0 */ fesetround(FE_DOWNWARD); js_ecvt1(d, n_digits + 2, dest, size, decpt); fesetround(FE_TONEAREST); if (dest[n_digits + 1] < '5') return n_digits; /* truncate the 2 extra digits */ } /* round up in the string */ for(i = n_digits;; i--) { /* ignore the locale specific decimal point */ if (is_digit(dest[i])) { if (dest[i]++ < '9') break; dest[i] = '0'; if (i == 0) { dest[0] = '1'; (*decpt)++; break; } } } return n_digits; /* truncate the 2 extra digits */ #else /* No disambiguation available, eg: __wasi__ targets */ return js_ecvt1(d, n_digits, dest, size, decpt); #endif } } /* `js_fcvt`: convert a floating point value to %f format using RNDNA `d` is finite and positive or zero. `n_digits` number of decimal places in range 0..100 Return the number of characters produced in `dest`. */ static size_t js_fcvt(double d, int n_digits, char dest[minimum_length(JS_FCVT_BUF_SIZE)], size_t size) { #if defined(FE_DOWNWARD) && defined(FE_TONEAREST) int i, n1; /* generate 2 extra digits: 99% chances to avoid 2 calls */ n1 = snprintf(dest, size, "%.*f", n_digits + 2, d) - 2; if (dest[n1] >= '5') { if (dest[n1] == '5' && dest[n1 + 1] == '0') { /* close to half-way: try rounding toward 0 */ fesetround(FE_DOWNWARD); n1 = snprintf(dest, size, "%.*f", n_digits + 2, d) - 2; fesetround(FE_TONEAREST); } if (dest[n1] >= '5') { /* number should be rounded up */ /* d is either exactly half way or greater: round the string manually */ for (i = n1 - 1;; i--) { /* ignore the locale specific decimal point */ if (is_digit(dest[i])) { if (dest[i]++ < '9') break; dest[i] = '0'; if (i == 0) { dest[0] = '1'; dest[n1] = '0'; dest[n1 - n_digits - 1] = '0'; dest[n1 - n_digits] = '.'; n1++; break; } } } } } /* truncate the extra 2 digits and the decimal point if !n_digits */ n1 -= !n_digits; //dest[n1] = '\0'; // optional return n1; #else /* No disambiguation available, eg: __wasi__ targets */ return snprintf(dest, size, "%.*f", n_digits, d); #endif } static JSValue js_dtoa_infinite(JSContext *ctx, double d) { // TODO(chqrlie) use atoms for NaN and Infinite? if (isnan(d)) return js_new_string8(ctx, "NaN"); if (d < 0) return js_new_string8(ctx, "-Infinity"); else return js_new_string8(ctx, "Infinity"); } #define JS_DTOA_TOSTRING 0 /* use as many digits as necessary */ #define JS_DTOA_EXPONENTIAL 1 /* use exponential notation either fixed or variable digits */ #define JS_DTOA_FIXED 2 /* force fixed number of fractional digits */ #define JS_DTOA_PRECISION 3 /* use n_digits significant digits (1 <= n_digits <= 101) */ /* `js_dtoa`: convert a floating point number to a string - `mode`: one of the 4 supported formats - `n_digits`: digit number according to mode - TOSTRING: 0 only. As many digits as necessary - EXPONENTIAL: 0 as many decimals as necessary - 1..101 number of significant digits - FIXED: 0..100 number of decimal places - PRECISION: 1..101 number of significant digits */ // XXX: should use libbf or quickjs-printf. static JSValue js_dtoa(JSContext *ctx, double d, int n_digits, int mode) { char buf[JS_DTOA_BUF_SIZE]; size_t len; char *start; int sign, decpt, exp, i, k, n, n_max; if (!isfinite(d)) return js_dtoa_infinite(ctx, d); sign = (d < 0); start = buf + 8; d = fabs(d); /* also converts -0 to 0 */ if (mode != JS_DTOA_EXPONENTIAL && n_digits == 0) { /* fast path for exact integers in variable format: clip to MAX_SAFE_INTEGER because to ensure insignificant digits are generated as 0. used for JS_DTOA_TOSTRING and JS_DTOA_FIXED without decimals. */ if (d <= (double)MAX_SAFE_INTEGER) { uint64_t u64 = (uint64_t)d; if (d == u64) { len = u64toa(start, u64); goto done; } } } if (mode == JS_DTOA_FIXED) { len = js_fcvt(d, n_digits, start, sizeof(buf) - 8); // TODO(chqrlie) patch the locale specific decimal point goto done; } n_max = (n_digits > 0) ? n_digits : 21; /* the number has k digits (1 <= k <= n_max) */ k = js_ecvt(d, n_digits, start, sizeof(buf) - 8, &decpt); /* buffer contents: 0: first digit 1: '.' decimal point 2..k: (k-1) additional digits */ n = decpt; /* d=10^(n-k)*(buf1) i.e. d= < x.yyyy 10^(n-1) */ if (mode != JS_DTOA_EXPONENTIAL) { /* mode is JS_DTOA_PRECISION or JS_DTOA_TOSTRING */ if (n >= 1 && n <= n_max) { /* between 1 and n_max digits before the decimal point */ if (k <= n) { /* all digits before the point, append zeros */ start[1] = start[0]; start++; for(i = k; i < n; i++) start[i] = '0'; len = n; } else { /* k > n: move digits before the point */ for(i = 1; i < n; i++) start[i] = start[i + 1]; start[i] = '.'; len = 1 + k; } goto done; } if (n >= -5 && n <= 0) { /* insert -n leading 0 decimals and a '0.' prefix */ n = -n; start[1] = start[0]; start -= n + 1; start[0] = '0'; start[1] = '.'; for(i = 0; i < n; i++) start[2 + i] = '0'; len = 2 + k + n; goto done; } } /* exponential notation */ exp = n - 1; /* count the digits and the decimal point if at least one decimal */ len = k + (k > 1); start[1] = '.'; /* patch the locale specific decimal point */ start[len] = 'e'; start[len + 1] = '+'; if (exp < 0) { start[len + 1] = '-'; exp = -exp; } len += 2 + 1 + (exp > 9) + (exp > 99); for (i = len - 1; exp > 9;) { int quo = exp / 10; start[i--] = (char)('0' + exp % 10); exp = quo; } start[i] = (char)('0' + exp); done: start[-1] = '-'; /* prepend the sign if negative */ return js_new_string8_len(ctx, start - sign, len + sign); } /* `js_dtoa_radix`: convert a floating point number using a specific base - `d` must be finite - `radix` must be in range 2..36 */ static JSValue js_dtoa_radix(JSContext *ctx, double d, int radix) { char buf[2200], *ptr, *ptr2, *ptr3; int sign, digit; double frac, d0; int64_t n0; if (!isfinite(d)) return js_dtoa_infinite(ctx, d); sign = (d < 0); d = fabs(d); d0 = trunc(d); n0 = 0; frac = d - d0; ptr2 = buf + 1100; /* ptr2 points to the end of the string */ ptr = ptr2; /* ptr points to the beginning of the string */ if (d0 <= MAX_SAFE_INTEGER) { int64_t n = n0 = (int64_t)d0; while (n >= radix) { digit = n % radix; n = n / radix; *--ptr = digits36[digit]; } *--ptr = digits36[(size_t)n]; } else { /* no decimals */ while (d0 >= radix) { digit = fmod(d0, radix); d0 = trunc(d0 / radix); if (d0 >= MAX_SAFE_INTEGER) digit = 0; *--ptr = digits36[digit]; } *--ptr = digits36[(size_t)d0]; goto done; } if (frac != 0) { double log2_radix = log2(radix); double prec = 1023 + 51; // handle subnormals *ptr2++ = '.'; while (frac != 0 && n0 <= MAX_SAFE_INTEGER/2 && prec > 0) { frac *= radix; digit = trunc(frac); frac -= digit; *ptr2++ = digits36[digit]; n0 = n0 * radix + digit; prec -= log2_radix; } if (frac * radix >= radix / 2) { /* round up the string representation manually */ char nine = digits36[radix - 1]; while (ptr2[-1] == nine) { /* strip trailing '9' or equivalent digits */ ptr2--; } if (ptr2[-1] == '.') { /* strip the 'decimal' point */ ptr2--; /* increment the integral part */ for (ptr3 = ptr2;;) { if (ptr3[-1] != nine) { ptr3[-1] = (ptr3[-1] == '9') ? 'a' : ptr3[-1] + 1; break; } *--ptr3 = '0'; if (ptr3 <= ptr) { /* prepend a '1' if number was all nines */ *--ptr = '1'; break; } } } else { /* increment the last fractional digit */ ptr2[-1] = (ptr2[-1] == '9') ? 'a' : ptr2[-1] + 1; } } else { /* strip trailing fractional zeros */ while (ptr2[-1] == '0') ptr2--; /* strip the 'decimal' point if last */ ptr2 -= (ptr2[-1] == '.'); } } done: ptr[-1] = '-'; ptr -= sign; return js_new_string8_len(ctx, ptr, ptr2 - ptr); } JSValue JS_ToStringInternal(JSContext *ctx, JSValueConst val, bool is_ToPropertyKey) { uint32_t tag; char buf[32]; size_t len; tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_STRING: return js_dup(val); case JS_TAG_INT: len = i32toa(buf, JS_VALUE_GET_INT(val)); return js_new_string8_len(ctx, buf, len); case JS_TAG_BOOL: return JS_AtomToString(ctx, JS_VALUE_GET_BOOL(val) ? JS_ATOM_true : JS_ATOM_false); case JS_TAG_NULL: return JS_AtomToString(ctx, JS_ATOM_null); case JS_TAG_UNDEFINED: return JS_AtomToString(ctx, JS_ATOM_undefined); case JS_TAG_EXCEPTION: return JS_EXCEPTION; case JS_TAG_OBJECT: { JSValue val1, ret; val1 = JS_ToPrimitive(ctx, val, HINT_STRING); if (JS_IsException(val1)) return val1; ret = JS_ToStringInternal(ctx, val1, is_ToPropertyKey); JS_FreeValue(ctx, val1); return ret; } break; case JS_TAG_FUNCTION_BYTECODE: return js_new_string8(ctx, "[function bytecode]"); case JS_TAG_SYMBOL: if (is_ToPropertyKey) { return js_dup(val); } else { return JS_ThrowTypeError(ctx, "cannot convert symbol to string"); } case JS_TAG_FLOAT64: return js_dtoa(ctx, JS_VALUE_GET_FLOAT64(val), 0, JS_DTOA_TOSTRING); case JS_TAG_BIG_INT: return js_bigint_to_string(ctx, val); case JS_TAG_UNINITIALIZED: return js_new_string8(ctx, "[uninitialized]"); default: return js_new_string8(ctx, "[unsupported type]"); } } JSValue JS_ToString(JSContext *ctx, JSValueConst val) { return JS_ToStringInternal(ctx, val, false); } static JSValue JS_ToStringFree(JSContext *ctx, JSValue val) { JSValue ret; ret = JS_ToString(ctx, val); JS_FreeValue(ctx, val); return ret; } static JSValue JS_ToLocaleStringFree(JSContext *ctx, JSValue val) { if (JS_IsUndefined(val) || JS_IsNull(val)) return JS_ToStringFree(ctx, val); return JS_InvokeFree(ctx, val, JS_ATOM_toLocaleString, 0, NULL); } JSValue JS_ToPropertyKey(JSContext *ctx, JSValueConst val) { return JS_ToStringInternal(ctx, val, true); } static JSValue JS_ToStringCheckObject(JSContext *ctx, JSValueConst val) { uint32_t tag = JS_VALUE_GET_TAG(val); if (tag == JS_TAG_NULL || tag == JS_TAG_UNDEFINED) return JS_ThrowTypeError(ctx, "null or undefined are forbidden"); return JS_ToString(ctx, val); } static JSValue JS_ToQuotedString(JSContext *ctx, JSValueConst val1) { JSValue val; JSString *p; int i; uint32_t c; StringBuffer b_s, *b = &b_s; char buf[16]; val = JS_ToStringCheckObject(ctx, val1); if (JS_IsException(val)) return val; p = JS_VALUE_GET_STRING(val); if (string_buffer_init(ctx, b, p->len + 2)) goto fail; if (string_buffer_putc8(b, '\"')) goto fail; for(i = 0; i < p->len; ) { c = string_getc(p, &i); switch(c) { case '\t': c = 't'; goto quote; case '\r': c = 'r'; goto quote; case '\n': c = 'n'; goto quote; case '\b': c = 'b'; goto quote; case '\f': c = 'f'; goto quote; case '\"': case '\\': quote: if (string_buffer_putc8(b, '\\')) goto fail; if (string_buffer_putc8(b, c)) goto fail; break; default: if (c < 32 || is_surrogate(c)) { snprintf(buf, sizeof(buf), "\\u%04x", c); if (string_buffer_write8(b, (uint8_t*)buf, 6)) goto fail; } else { if (string_buffer_putc(b, c)) goto fail; } break; } } if (string_buffer_putc8(b, '\"')) goto fail; JS_FreeValue(ctx, val); return string_buffer_end(b); fail: JS_FreeValue(ctx, val); string_buffer_free(b); return JS_EXCEPTION; } static __maybe_unused void JS_DumpObjectHeader(JSRuntime *rt) { printf("%14s %4s %4s %14s %10s %s\n", "ADDRESS", "REFS", "SHRF", "PROTO", "CLASS", "PROPS"); } /* for debug only: dump an object without side effect */ static __maybe_unused void JS_DumpObject(JSRuntime *rt, JSObject *p) { uint32_t i; char atom_buf[ATOM_GET_STR_BUF_SIZE]; JSShape *sh; JSShapeProperty *prs; JSProperty *pr; bool is_first = true; /* XXX: should encode atoms with special characters */ sh = p->shape; /* the shape can be NULL while freeing an object */ printf("%14p %4d ", (void *)p, p->header.ref_count); if (sh) { printf("%3d%c %14p ", sh->header.ref_count, " *"[sh->is_hashed], (void *)sh->proto); } else { printf("%3s %14s ", "-", "-"); } printf("%10s ", JS_AtomGetStrRT(rt, atom_buf, sizeof(atom_buf), rt->class_array[p->class_id].class_name)); if (p->is_exotic && p->fast_array) { printf("[ "); for(i = 0; i < p->u.array.count; i++) { if (i != 0) printf(", "); switch (p->class_id) { case JS_CLASS_ARRAY: case JS_CLASS_ARGUMENTS: JS_DumpValue(rt, p->u.array.u.values[i]); break; case JS_CLASS_UINT8C_ARRAY: case JS_CLASS_INT8_ARRAY: case JS_CLASS_UINT8_ARRAY: case JS_CLASS_INT16_ARRAY: case JS_CLASS_UINT16_ARRAY: case JS_CLASS_INT32_ARRAY: case JS_CLASS_UINT32_ARRAY: case JS_CLASS_BIG_INT64_ARRAY: case JS_CLASS_BIG_UINT64_ARRAY: case JS_CLASS_FLOAT16_ARRAY: case JS_CLASS_FLOAT32_ARRAY: case JS_CLASS_FLOAT64_ARRAY: { int size = 1 << typed_array_size_log2(p->class_id); const uint8_t *b = p->u.array.u.uint8_ptr + i * size; while (size-- > 0) printf("%02X", *b++); } break; } } printf(" ] "); } if (sh) { printf("{ "); for(i = 0, prs = get_shape_prop(sh); i < sh->prop_count; i++, prs++) { if (prs->atom != JS_ATOM_NULL) { pr = &p->prop[i]; if (!is_first) printf(", "); printf("%s: ", JS_AtomGetStrRT(rt, atom_buf, sizeof(atom_buf), prs->atom)); if ((prs->flags & JS_PROP_TMASK) == JS_PROP_GETSET) { printf("[getset %p %p]", (void *)pr->u.getset.getter, (void *)pr->u.getset.setter); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_VARREF) { printf("[varref %p]", (void *)pr->u.var_ref); } else if ((prs->flags & JS_PROP_TMASK) == JS_PROP_AUTOINIT) { printf("[autoinit %p %d %p]", (void *)js_autoinit_get_realm(pr), js_autoinit_get_id(pr), (void *)pr->u.init.opaque); } else { JS_DumpValue(rt, pr->u.value); } is_first = false; } } printf(" }"); } if (js_class_has_bytecode(p->class_id)) { JSFunctionBytecode *b = p->u.func.function_bytecode; JSVarRef **var_refs; if (b->closure_var_count) { var_refs = p->u.func.var_refs; printf(" Closure:"); for(i = 0; i < b->closure_var_count; i++) { printf(" "); JS_DumpValue(rt, var_refs[i]->value); } if (p->u.func.home_object) { printf(" HomeObject: "); JS_DumpValue(rt, JS_MKPTR(JS_TAG_OBJECT, p->u.func.home_object)); } } } printf("\n"); } static __maybe_unused void JS_DumpGCObject(JSRuntime *rt, JSGCObjectHeader *p) { if (p->gc_obj_type == JS_GC_OBJ_TYPE_JS_OBJECT) { JS_DumpObject(rt, (JSObject *)p); } else { printf("%14p %4d ", (void *)p, p->ref_count); switch(p->gc_obj_type) { case JS_GC_OBJ_TYPE_FUNCTION_BYTECODE: printf("[function bytecode]"); break; case JS_GC_OBJ_TYPE_SHAPE: printf("[shape]"); break; case JS_GC_OBJ_TYPE_VAR_REF: printf("[var_ref]"); break; case JS_GC_OBJ_TYPE_ASYNC_FUNCTION: printf("[async_function]"); break; case JS_GC_OBJ_TYPE_JS_CONTEXT: printf("[js_context]"); break; default: printf("[unknown %d]", p->gc_obj_type); break; } printf("\n"); } } static __maybe_unused void JS_DumpValue(JSRuntime *rt, JSValueConst val) { uint32_t tag = JS_VALUE_GET_NORM_TAG(val); const char *str; switch(tag) { case JS_TAG_INT: printf("%d", JS_VALUE_GET_INT(val)); break; case JS_TAG_BOOL: if (JS_VALUE_GET_BOOL(val)) str = "true"; else str = "false"; goto print_str; case JS_TAG_NULL: str = "null"; goto print_str; case JS_TAG_EXCEPTION: str = "exception"; goto print_str; case JS_TAG_UNINITIALIZED: str = "uninitialized"; goto print_str; case JS_TAG_UNDEFINED: str = "undefined"; print_str: printf("%s", str); break; case JS_TAG_FLOAT64: printf("%.14g", JS_VALUE_GET_FLOAT64(val)); break; case JS_TAG_BIG_INT: { JSBigInt *p = JS_VALUE_GET_PTR(val); char *str; str = bf_ftoa(NULL, &p->num, 10, 0, BF_RNDZ | BF_FTOA_FORMAT_FRAC); printf("%sn", str); bf_realloc(&rt->bf_ctx, str, 0); } break; case JS_TAG_STRING: { JSString *p; p = JS_VALUE_GET_STRING(val); JS_DumpString(rt, p); } break; case JS_TAG_FUNCTION_BYTECODE: { JSFunctionBytecode *b = JS_VALUE_GET_PTR(val); char buf[ATOM_GET_STR_BUF_SIZE]; if (b->func_name) { printf("[bytecode %s]", JS_AtomGetStrRT(rt, buf, sizeof(buf), b->func_name)); } else { printf("[bytecode (anonymous)]"); } } break; case JS_TAG_OBJECT: { JSObject *p = JS_VALUE_GET_OBJ(val); JSAtom atom = rt->class_array[p->class_id].class_name; char atom_buf[ATOM_GET_STR_BUF_SIZE]; printf("[%s %p]", JS_AtomGetStrRT(rt, atom_buf, sizeof(atom_buf), atom), (void *)p); } break; case JS_TAG_SYMBOL: { JSAtomStruct *p = JS_VALUE_GET_PTR(val); char atom_buf[ATOM_GET_STR_BUF_SIZE]; printf("Symbol(%s)", JS_AtomGetStrRT(rt, atom_buf, sizeof(atom_buf), js_get_atom_index(rt, p))); } break; case JS_TAG_MODULE: printf("[module]"); break; default: printf("[unknown tag %d]", tag); break; } } bool JS_IsArray(JSValueConst val) { if (JS_VALUE_GET_TAG(val) == JS_TAG_OBJECT) { JSObject *p = JS_VALUE_GET_OBJ(val); return p->class_id == JS_CLASS_ARRAY; } return false; } /* return -1 if exception (proxy case) or true/false */ static int js_is_array(JSContext *ctx, JSValueConst val) { JSObject *p; if (JS_VALUE_GET_TAG(val) == JS_TAG_OBJECT) { p = JS_VALUE_GET_OBJ(val); if (unlikely(p->class_id == JS_CLASS_PROXY)) return js_proxy_isArray(ctx, val); else return p->class_id == JS_CLASS_ARRAY; } else { return false; } } static double js_math_pow(double a, double b) { if (unlikely(!isfinite(b)) && fabs(a) == 1) { /* not compatible with IEEE 754 */ return NAN; } else { return pow(a, b); } } JSValue JS_NewBigInt64(JSContext *ctx, int64_t v) { JSValue val; bf_t *a; val = JS_NewBigInt(ctx); if (JS_IsException(val)) return val; a = JS_GetBigInt(val); if (bf_set_si(a, v)) { JS_FreeValue(ctx, val); return JS_ThrowOutOfMemory(ctx); } return val; } JSValue JS_NewBigUint64(JSContext *ctx, uint64_t v) { JSValue val; bf_t *a; val = JS_NewBigInt(ctx); if (JS_IsException(val)) return val; a = JS_GetBigInt(val); if (bf_set_ui(a, v)) { JS_FreeValue(ctx, val); return JS_ThrowOutOfMemory(ctx); } return val; } /* if the returned bigint is allocated it is equal to 'buf'. Otherwise it is a pointer to the bigint in 'val'. Return NULL in case of error. */ // TODO(bnoordhuis) Merge with JS_ToBigInt() static bf_t *JS_ToBigInt1(JSContext *ctx, bf_t *buf, JSValueConst val) { uint32_t tag; bf_t *r; JSBigInt *p; tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_BOOL: case JS_TAG_NULL: r = buf; bf_init(ctx->bf_ctx, r); if (bf_set_si(r, JS_VALUE_GET_INT(val))) goto fail; break; case JS_TAG_FLOAT64: r = buf; bf_init(ctx->bf_ctx, r); if (bf_set_float64(r, JS_VALUE_GET_FLOAT64(val))) { fail: bf_delete(r); return NULL; } break; case JS_TAG_BIG_INT: p = JS_VALUE_GET_PTR(val); r = &p->num; break; case JS_TAG_UNDEFINED: default: r = buf; bf_init(ctx->bf_ctx, r); bf_set_nan(r); break; } return r; } /* return NaN if bad bigint literal */ static JSValue JS_StringToBigInt(JSContext *ctx, JSValue val) { const char *str; size_t len; int flags; str = JS_ToCStringLen(ctx, &len, val); JS_FreeValue(ctx, val); if (!str) return JS_EXCEPTION; flags = ATOD_WANT_BIG_INT | ATOD_TRIM_SPACES | ATOD_ACCEPT_EMPTY | ATOD_ACCEPT_HEX_PREFIX | ATOD_ACCEPT_BIN_OCT | ATOD_DECIMAL_AFTER_SIGN | ATOD_NO_TRAILING_CHARS; val = js_atof(ctx, str, len, NULL, 10, flags); JS_FreeCString(ctx, str); return val; } static JSValue JS_StringToBigIntErr(JSContext *ctx, JSValue val) { val = JS_StringToBigInt(ctx, val); if (JS_VALUE_IS_NAN(val)) return JS_ThrowSyntaxError(ctx, "invalid BigInt literal"); return val; } /* if the returned bigint is allocated it is equal to 'buf'. Otherwise it is a pointer to the bigint in 'val'. */ static bf_t *JS_ToBigIntFree(JSContext *ctx, bf_t *buf, JSValue val) { uint32_t tag; bf_t *r; JSBigInt *p; redo: tag = JS_VALUE_GET_NORM_TAG(val); switch(tag) { case JS_TAG_INT: case JS_TAG_NULL: case JS_TAG_UNDEFINED: case JS_TAG_FLOAT64: goto fail; case JS_TAG_BOOL: r = buf; bf_init(ctx->bf_ctx, r); bf_set_si(r, JS_VALUE_GET_INT(val)); break; case JS_TAG_BIG_INT: p = JS_VALUE_GET_PTR(val); r = &p->num; break; case JS_TAG_STRING: val = JS_StringToBigIntErr(ctx, val); if (JS_IsException(val)) return NULL; goto redo; case JS_TAG_OBJECT: val = JS_ToPrimitiveFree(ctx, val, HINT_NUMBER); if (JS_IsException(val)) return NULL; goto redo; default: fail: JS_FreeValue(ctx, val); JS_ThrowTypeError(ctx, "cannot convert to BigInt"); return NULL; } return r; } static bf_t *JS_ToBigInt(JSContext *ctx, bf_t *buf, JSValueConst val) { return JS_ToBigIntFree(ctx, buf, js_dup(val)); } static __maybe_unused JSValue JS_ToBigIntValueFree(JSContext *ctx, JSValue val) { if (JS_VALUE_GET_TAG(val) == JS_TAG_BIG_INT) { return val; } else { bf_t a_s, *a, *r; int ret; JSValue res; res = JS_NewBigInt(ctx); if (JS_IsException(res)) return JS_EXCEPTION; a = JS_ToBigIntFree(ctx, &a_s, val); if (!a) { JS_FreeValue(ctx, res); return JS_EXCEPTION; } r = JS_GetBigInt(res); ret = bf_set(r, a); JS_FreeBigInt(ctx, a, &a_s); if (ret) { JS_FreeValue(ctx, res); return JS_ThrowOutOfMemory(ctx); } return JS_CompactBigInt(ctx, res); } } /* free the bf_t allocated by JS_ToBigInt */ static void JS_FreeBigInt(JSContext *ctx, bf_t *a, bf_t *buf) { if (a == buf) { bf_delete(a); } else { JSBigInt *p = (JSBigInt *)((uint8_t *)a - offsetof(JSBigInt, num)); JS_FreeValue(ctx, JS_MKPTR(JS_TAG_BIG_INT, p)); } } /* XXX: merge with JS_ToInt64Free with a specific flag */ static int JS_ToBigInt64Free(JSContext *ctx, int64_t *pres, JSValue val) { bf_t a_s, *a; a = JS_ToBigIntFree(ctx, &a_s, val); if (!a) { *pres = 0; return -1; } bf_get_int64(pres, a, BF_GET_INT_MOD); JS_FreeBigInt(ctx, a, &a_s); return 0; } int JS_ToBigInt64(JSContext *ctx, int64_t *pres, JSValueConst val) { return JS_ToBigInt64Free(ctx, pres, js_dup(val)); } int JS_ToBigUint64(JSContext *ctx, uint64_t *pres, JSValueConst val) { return JS_ToBigInt64Free(ctx, (int64_t *)pres, js_dup(val)); } static JSValue JS_NewBigInt(JSContext *ctx) { JSBigInt *p; p = js_malloc(ctx, sizeof(*p)); if (!p) return JS_EXCEPTION; p->header.ref_count = 1; bf_init(ctx->bf_ctx, &p->num); return JS_MKPTR(JS_TAG_BIG_INT, p); } static JSValue JS_CompactBigInt1(JSContext *ctx, JSValue val) { if (JS_VALUE_GET_TAG(val) != JS_TAG_BIG_INT) return val; /* fail safe */ bf_t *a = JS_GetBigInt(val); if (a->expn == BF_EXP_ZERO && a->sign) { assert(((JSBigInt*)JS_VALUE_GET_PTR(val))->header.ref_count == 1); a->sign = 0; } return val; } /* Nnormalize the zero representation. Could also be used to convert the bigint to a short bigint value. The reference count of the value must be 1. Cannot fail */ static JSValue JS_CompactBigInt(JSContext *ctx, JSValue val) { return JS_CompactBigInt1(ctx, val); } static JSValue throw_bf_exception(JSContext *ctx, int status) { const char *str; if (status & BF_ST_MEM_ERROR) return JS_ThrowOutOfMemory(ctx); if (status & BF_ST_DIVIDE_ZERO) { str = "division by zero"; } else if (status & BF_ST_INVALID_OP) { str = "invalid operation"; } else { str = "integer overflow"; } return JS_ThrowRangeError(ctx, "%s", str); } static int js_unary_arith_bigint(JSContext *ctx, JSValue *pres, OPCodeEnum op, JSValue op1) { bf_t a_s, *r, *a; int ret, v; JSValue res; if (op == OP_plus) { JS_ThrowTypeError(ctx, "BigInt argument with unary +"); JS_FreeValue(ctx, op1); return -1; } res = JS_NewBigInt(ctx); if (JS_IsException(res)) { JS_FreeValue(ctx, op1); return -1; } r = JS_GetBigInt(res); a = JS_ToBigIntFree(ctx, &a_s, op1); // infallible, always a bigint ret = 0; switch(op) { case OP_inc: case OP_dec: v = 2 * (op - OP_dec) - 1; ret = bf_add_si(r, a, v, BF_PREC_INF, BF_RNDZ); break; case OP_plus: ret = bf_set(r, a); break; case OP_neg: ret = bf_set(r, a); bf_neg(r); break; case OP_not: ret = bf_add_si(r, a, 1, BF_PREC_INF, BF_RNDZ); bf_neg(r); break; default: abort(); } JS_FreeBigInt(ctx, a, &a_s); if (unlikely(ret)) { JS_FreeValue(ctx, res); throw_bf_exception(ctx, ret); return -1; } res = JS_CompactBigInt(ctx, res); *pres = res; return 0; } static no_inline __exception int js_unary_arith_slow(JSContext *ctx, JSValue *sp, OPCodeEnum op) { JSValue op1; int v; uint32_t tag; op1 = sp[-1]; /* fast path for float64 */ if (JS_TAG_IS_FLOAT64(JS_VALUE_GET_TAG(op1))) goto handle_float64; op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) goto exception; tag = JS_VALUE_GET_TAG(op1); switch(tag) { case JS_TAG_INT: { int64_t v64; v64 = JS_VALUE_GET_INT(op1); switch(op) { case OP_inc: case OP_dec: v = 2 * (op - OP_dec) - 1; v64 += v; break; case OP_plus: break; case OP_neg: if (v64 == 0) { sp[-1] = js_float64(-0.0); return 0; } else { v64 = -v64; } break; default: abort(); } sp[-1] = js_int64(v64); } break; case JS_TAG_BIG_INT: if (js_unary_arith_bigint(ctx, sp - 1, op, op1)) goto exception; break; default: handle_float64: { double d = JS_VALUE_GET_FLOAT64(op1); switch(op) { case OP_inc: case OP_dec: v = 2 * (op - OP_dec) - 1; d += v; break; case OP_plus: break; case OP_neg: d = -d; break; default: abort(); } sp[-1] = js_float64(d); } break; } return 0; exception: sp[-1] = JS_UNDEFINED; return -1; } static __exception int js_post_inc_slow(JSContext *ctx, JSValue *sp, OPCodeEnum op) { JSValue op1; /* XXX: allow custom operators */ op1 = sp[-1]; op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { sp[-1] = JS_UNDEFINED; return -1; } sp[-1] = op1; sp[0] = js_dup(op1); return js_unary_arith_slow(ctx, sp + 1, op - OP_post_dec + OP_dec); } static no_inline int js_not_slow(JSContext *ctx, JSValue *sp) { JSValue op1; op1 = JS_ToNumericFree(ctx, sp[-1]); if (JS_IsException(op1)) goto exception; if (JS_VALUE_GET_TAG(op1) == JS_TAG_BIG_INT) { if (js_unary_arith_bigint(ctx, sp - 1, OP_not, op1)) goto exception; } else { int32_t v1; if (unlikely(JS_ToInt32Free(ctx, &v1, op1))) goto exception; sp[-1] = js_int32(~v1); } return 0; exception: sp[-1] = JS_UNDEFINED; return -1; } static int js_binary_arith_bigint(JSContext *ctx, OPCodeEnum op, JSValue *pres, JSValue op1, JSValue op2) { bf_t a_s, b_s, *r, *a, *b; int ret; JSValue res; a = JS_ToBigIntFree(ctx, &a_s, op1); if (!a) { JS_FreeValue(ctx, op2); return -1; } b = JS_ToBigIntFree(ctx, &b_s, op2); if (!b) { JS_FreeBigInt(ctx, a, &a_s); return -1; } res = JS_NewBigInt(ctx); if (JS_IsException(res)) { JS_FreeBigInt(ctx, a, &a_s); JS_FreeBigInt(ctx, b, &b_s); return -1; } r = JS_GetBigInt(res); ret = 0; switch(op) { case OP_add: ret = bf_add(r, a, b, BF_PREC_INF, BF_RNDZ); break; case OP_sub: ret = bf_sub(r, a, b, BF_PREC_INF, BF_RNDZ); break; case OP_mul: ret = bf_mul(r, a, b, BF_PREC_INF, BF_RNDZ); break; case OP_div: { bf_t rem_s, *rem = &rem_s; bf_init(ctx->bf_ctx, rem); ret = bf_divrem(r, rem, a, b, BF_PREC_INF, BF_RNDZ, BF_RNDZ); bf_delete(rem); } break; case OP_mod: ret = bf_rem(r, a, b, BF_PREC_INF, BF_RNDZ, BF_RNDZ) & BF_ST_INVALID_OP; break; case OP_pow: if (b->sign) { ret = BF_ST_INVALID_OP; } else { ret = bf_pow(r, a, b, BF_PREC_INF, BF_RNDZ | BF_POW_JS_QUIRKS); } break; /* logical operations */ case OP_shl: case OP_sar: { slimb_t v2; #if LIMB_BITS == 32 bf_get_int32(&v2, b, 0); if (v2 == INT32_MIN) v2 = INT32_MIN + 1; #else bf_get_int64(&v2, b, 0); if (v2 == INT64_MIN) v2 = INT64_MIN + 1; #endif if (op == OP_sar) v2 = -v2; ret = bf_set(r, a); ret |= bf_mul_2exp(r, v2, BF_PREC_INF, BF_RNDZ); if (v2 < 0) { ret |= bf_rint(r, BF_RNDD) & (BF_ST_OVERFLOW | BF_ST_MEM_ERROR); } } break; case OP_and: ret = bf_logic_and(r, a, b); break; case OP_or: ret = bf_logic_or(r, a, b); break; case OP_xor: ret = bf_logic_xor(r, a, b); break; default: abort(); } JS_FreeBigInt(ctx, a, &a_s); JS_FreeBigInt(ctx, b, &b_s); if (unlikely(ret)) { JS_FreeValue(ctx, res); throw_bf_exception(ctx, ret); return -1; } *pres = JS_CompactBigInt(ctx, res); return 0; } static no_inline __exception int js_binary_arith_slow(JSContext *ctx, JSValue *sp, OPCodeEnum op) { JSValue op1, op2; uint32_t tag1, tag2; double d1, d2; op1 = sp[-2]; op2 = sp[-1]; tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); /* fast path for float operations */ if (tag1 == JS_TAG_FLOAT64 && tag2 == JS_TAG_FLOAT64) { d1 = JS_VALUE_GET_FLOAT64(op1); d2 = JS_VALUE_GET_FLOAT64(op2); goto handle_float64; } op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); if (tag1 == JS_TAG_INT && tag2 == JS_TAG_INT) { int32_t v1, v2; int64_t v; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2); switch(op) { case OP_sub: v = (int64_t)v1 - (int64_t)v2; break; case OP_mul: v = (int64_t)v1 * (int64_t)v2; if (v == 0 && (v1 | v2) < 0) { sp[-2] = js_float64(-0.0); return 0; } break; case OP_div: sp[-2] = js_float64((double)v1 / (double)v2); return 0; case OP_mod: if (v1 < 0 || v2 <= 0) { sp[-2] = js_number(fmod(v1, v2)); return 0; } else { v = (int64_t)v1 % (int64_t)v2; } break; case OP_pow: sp[-2] = js_number(js_math_pow(v1, v2)); return 0; default: abort(); } sp[-2] = js_int64(v); } else if (tag1 == JS_TAG_BIG_INT || tag2 == JS_TAG_BIG_INT) { if (js_binary_arith_bigint(ctx, op, sp - 2, op1, op2)) goto exception; } else { double dr; /* float64 result */ if (JS_ToFloat64Free(ctx, &d1, op1)) { JS_FreeValue(ctx, op2); goto exception; } if (JS_ToFloat64Free(ctx, &d2, op2)) goto exception; handle_float64: switch(op) { case OP_sub: dr = d1 - d2; break; case OP_mul: dr = d1 * d2; break; case OP_div: dr = d1 / d2; break; case OP_mod: dr = fmod(d1, d2); break; case OP_pow: dr = js_math_pow(d1, d2); break; default: abort(); } sp[-2] = js_float64(dr); } return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static no_inline __exception int js_add_slow(JSContext *ctx, JSValue *sp) { JSValue op1, op2; uint32_t tag1, tag2; op1 = sp[-2]; op2 = sp[-1]; tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); /* fast path for float64 */ if (tag1 == JS_TAG_FLOAT64 && tag2 == JS_TAG_FLOAT64) { double d1, d2; d1 = JS_VALUE_GET_FLOAT64(op1); d2 = JS_VALUE_GET_FLOAT64(op2); sp[-2] = js_float64(d1 + d2); return 0; } if (tag1 == JS_TAG_OBJECT || tag2 == JS_TAG_OBJECT) { op1 = JS_ToPrimitiveFree(ctx, op1, HINT_NONE); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToPrimitiveFree(ctx, op2, HINT_NONE); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); } if (tag1 == JS_TAG_STRING || tag2 == JS_TAG_STRING) { sp[-2] = JS_ConcatString(ctx, op1, op2); if (JS_IsException(sp[-2])) goto exception; return 0; } op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); if (tag1 == JS_TAG_INT && tag2 == JS_TAG_INT) { int32_t v1, v2; int64_t v; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2); v = (int64_t)v1 + (int64_t)v2; sp[-2] = js_int64(v); } else if (tag1 == JS_TAG_BIG_INT || tag2 == JS_TAG_BIG_INT) { if (js_binary_arith_bigint(ctx, OP_add, sp - 2, op1, op2)) goto exception; } else { double d1, d2; /* float64 result */ if (JS_ToFloat64Free(ctx, &d1, op1)) { JS_FreeValue(ctx, op2); goto exception; } if (JS_ToFloat64Free(ctx, &d2, op2)) goto exception; sp[-2] = js_float64(d1 + d2); } return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static no_inline __exception int js_binary_logic_slow(JSContext *ctx, JSValue *sp, OPCodeEnum op) { JSValue op1, op2; uint32_t tag1, tag2; uint32_t v1, v2, r; op1 = sp[-2]; op2 = sp[-1]; tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } tag1 = JS_VALUE_GET_TAG(op1); tag2 = JS_VALUE_GET_TAG(op2); if (tag1 == JS_TAG_BIG_INT || tag2 == JS_TAG_BIG_INT) { if (tag1 != tag2) { JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); JS_ThrowTypeError(ctx, "both operands must be BigInt"); goto exception; } else if (js_binary_arith_bigint(ctx, op, sp - 2, op1, op2)) { goto exception; } } else { if (unlikely(JS_ToInt32Free(ctx, (int32_t *)&v1, op1))) { JS_FreeValue(ctx, op2); goto exception; } if (unlikely(JS_ToInt32Free(ctx, (int32_t *)&v2, op2))) goto exception; switch(op) { case OP_shl: r = v1 << (v2 & 0x1f); break; case OP_sar: r = (int)v1 >> (v2 & 0x1f); break; case OP_and: r = v1 & v2; break; case OP_or: r = v1 | v2; break; case OP_xor: r = v1 ^ v2; break; default: abort(); } sp[-2] = js_int32(r); } return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static int js_compare_bigint(JSContext *ctx, OPCodeEnum op, JSValue op1, JSValue op2) { bf_t a_s, b_s, *a, *b; int res; a = JS_ToBigInt1(ctx, &a_s, op1); if (!a) { JS_FreeValue(ctx, op2); return -1; } b = JS_ToBigInt1(ctx, &b_s, op2); if (!b) { if (a == &a_s) bf_delete(a); JS_FreeValue(ctx, op1); return -1; } switch(op) { case OP_lt: res = bf_cmp_lt(a, b); /* if NaN return false */ break; case OP_lte: res = bf_cmp_le(a, b); /* if NaN return false */ break; case OP_gt: res = bf_cmp_lt(b, a); /* if NaN return false */ break; case OP_gte: res = bf_cmp_le(b, a); /* if NaN return false */ break; case OP_eq: res = bf_cmp_eq(a, b); /* if NaN return false */ break; default: abort(); } if (a == &a_s) bf_delete(a); if (b == &b_s) bf_delete(b); JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); return res; } static no_inline int js_relational_slow(JSContext *ctx, JSValue *sp, OPCodeEnum op) { JSValue op1, op2; int res; uint32_t tag1, tag2; op1 = sp[-2]; op2 = sp[-1]; tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); op1 = JS_ToPrimitiveFree(ctx, op1, HINT_NUMBER); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToPrimitiveFree(ctx, op2, HINT_NUMBER); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); if (tag1 == JS_TAG_STRING && tag2 == JS_TAG_STRING) { JSString *p1, *p2; p1 = JS_VALUE_GET_STRING(op1); p2 = JS_VALUE_GET_STRING(op2); res = js_string_compare(p1, p2); switch(op) { case OP_lt: res = (res < 0); break; case OP_lte: res = (res <= 0); break; case OP_gt: res = (res > 0); break; default: case OP_gte: res = (res >= 0); break; } JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); } else if ((tag1 <= JS_TAG_NULL || tag1 == JS_TAG_FLOAT64) && (tag2 <= JS_TAG_NULL || tag2 == JS_TAG_FLOAT64)) { /* fast path for float64/int */ goto float64_compare; } else { if (((tag1 == JS_TAG_BIG_INT && tag2 == JS_TAG_STRING) || (tag2 == JS_TAG_BIG_INT && tag1 == JS_TAG_STRING))) { if (tag1 == JS_TAG_STRING) { op1 = JS_StringToBigInt(ctx, op1); if (JS_VALUE_GET_TAG(op1) != JS_TAG_BIG_INT) goto invalid_bigint_string; } if (tag2 == JS_TAG_STRING) { op2 = JS_StringToBigInt(ctx, op2); if (JS_VALUE_GET_TAG(op2) != JS_TAG_BIG_INT) { invalid_bigint_string: JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); res = false; goto done; } } } else { op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } } tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); if (tag1 == JS_TAG_BIG_INT || tag2 == JS_TAG_BIG_INT) { res = js_compare_bigint(ctx, op, op1, op2); if (res < 0) goto exception; } else { double d1, d2; float64_compare: /* can use floating point comparison */ if (tag1 == JS_TAG_FLOAT64) { d1 = JS_VALUE_GET_FLOAT64(op1); } else { d1 = JS_VALUE_GET_INT(op1); } if (tag2 == JS_TAG_FLOAT64) { d2 = JS_VALUE_GET_FLOAT64(op2); } else { d2 = JS_VALUE_GET_INT(op2); } switch(op) { case OP_lt: res = (d1 < d2); /* if NaN return false */ break; case OP_lte: res = (d1 <= d2); /* if NaN return false */ break; case OP_gt: res = (d1 > d2); /* if NaN return false */ break; default: case OP_gte: res = (d1 >= d2); /* if NaN return false */ break; } } } done: sp[-2] = js_bool(res); return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static bool tag_is_number(uint32_t tag) { return (tag == JS_TAG_INT || tag == JS_TAG_BIG_INT || tag == JS_TAG_FLOAT64); } static no_inline __exception int js_eq_slow(JSContext *ctx, JSValue *sp, bool is_neq) { JSValue op1, op2; int res; uint32_t tag1, tag2; op1 = sp[-2]; op2 = sp[-1]; redo: tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); if (tag_is_number(tag1) && tag_is_number(tag2)) { if (tag1 == JS_TAG_INT && tag2 == JS_TAG_INT) { res = JS_VALUE_GET_INT(op1) == JS_VALUE_GET_INT(op2); } else if ((tag1 == JS_TAG_FLOAT64 && (tag2 == JS_TAG_INT || tag2 == JS_TAG_FLOAT64)) || (tag2 == JS_TAG_FLOAT64 && (tag1 == JS_TAG_INT || tag1 == JS_TAG_FLOAT64))) { double d1, d2; if (tag1 == JS_TAG_FLOAT64) { d1 = JS_VALUE_GET_FLOAT64(op1); } else { d1 = JS_VALUE_GET_INT(op1); } if (tag2 == JS_TAG_FLOAT64) { d2 = JS_VALUE_GET_FLOAT64(op2); } else { d2 = JS_VALUE_GET_INT(op2); } res = (d1 == d2); } else { res = js_compare_bigint(ctx, OP_eq, op1, op2); if (res < 0) goto exception; } } else if (tag1 == tag2) { res = js_strict_eq2(ctx, op1, op2, JS_EQ_STRICT); } else if ((tag1 == JS_TAG_NULL && tag2 == JS_TAG_UNDEFINED) || (tag2 == JS_TAG_NULL && tag1 == JS_TAG_UNDEFINED)) { res = true; } else if ((tag1 == JS_TAG_STRING && tag_is_number(tag2)) || (tag2 == JS_TAG_STRING && tag_is_number(tag1))) { if ((tag1 == JS_TAG_BIG_INT || tag2 == JS_TAG_BIG_INT)) { if (tag1 == JS_TAG_STRING) { op1 = JS_StringToBigInt(ctx, op1); if (JS_VALUE_GET_TAG(op1) != JS_TAG_BIG_INT) goto invalid_bigint_string; } if (tag2 == JS_TAG_STRING) { op2 = JS_StringToBigInt(ctx, op2); if (JS_VALUE_GET_TAG(op2) != JS_TAG_BIG_INT) { invalid_bigint_string: JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); res = false; goto done; } } } else { op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } } res = js_strict_eq(ctx, op1, op2); } else if (tag1 == JS_TAG_BOOL) { op1 = js_int32(JS_VALUE_GET_INT(op1)); goto redo; } else if (tag2 == JS_TAG_BOOL) { op2 = js_int32(JS_VALUE_GET_INT(op2)); goto redo; } else if ((tag1 == JS_TAG_OBJECT && (tag_is_number(tag2) || tag2 == JS_TAG_STRING || tag2 == JS_TAG_SYMBOL)) || (tag2 == JS_TAG_OBJECT && (tag_is_number(tag1) || tag1 == JS_TAG_STRING || tag1 == JS_TAG_SYMBOL))) { op1 = JS_ToPrimitiveFree(ctx, op1, HINT_NONE); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToPrimitiveFree(ctx, op2, HINT_NONE); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } goto redo; } else { /* IsHTMLDDA object is equivalent to undefined for '==' and '!=' */ if ((JS_IsHTMLDDA(ctx, op1) && (tag2 == JS_TAG_NULL || tag2 == JS_TAG_UNDEFINED)) || (JS_IsHTMLDDA(ctx, op2) && (tag1 == JS_TAG_NULL || tag1 == JS_TAG_UNDEFINED))) { res = true; } else { res = false; } JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); } done: sp[-2] = js_bool(res ^ is_neq); return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static no_inline int js_shr_slow(JSContext *ctx, JSValue *sp) { JSValue op1, op2; uint32_t v1, v2, r; op1 = sp[-2]; op2 = sp[-1]; op1 = JS_ToNumericFree(ctx, op1); if (JS_IsException(op1)) { JS_FreeValue(ctx, op2); goto exception; } op2 = JS_ToNumericFree(ctx, op2); if (JS_IsException(op2)) { JS_FreeValue(ctx, op1); goto exception; } if ((JS_VALUE_GET_TAG(op1) == JS_TAG_BIG_INT || JS_VALUE_GET_TAG(op2) == JS_TAG_BIG_INT)) { JS_ThrowTypeError(ctx, "BigInt operands are forbidden for >>>"); JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); goto exception; } /* cannot give an exception */ JS_ToUint32Free(ctx, &v1, op1); JS_ToUint32Free(ctx, &v2, op2); r = v1 >> (v2 & 0x1f); sp[-2] = js_uint32(r); return 0; exception: sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static bool js_strict_eq2(JSContext *ctx, JSValue op1, JSValue op2, JSStrictEqModeEnum eq_mode) { bool res; int tag1, tag2; double d1, d2; tag1 = JS_VALUE_GET_NORM_TAG(op1); tag2 = JS_VALUE_GET_NORM_TAG(op2); switch(tag1) { case JS_TAG_BOOL: if (tag1 != tag2) { res = false; } else { res = JS_VALUE_GET_INT(op1) == JS_VALUE_GET_INT(op2); goto done_no_free; } break; case JS_TAG_NULL: case JS_TAG_UNDEFINED: res = (tag1 == tag2); break; case JS_TAG_STRING: { JSString *p1, *p2; if (tag1 != tag2) { res = false; } else { p1 = JS_VALUE_GET_STRING(op1); p2 = JS_VALUE_GET_STRING(op2); res = js_string_eq(p1, p2); } } break; case JS_TAG_SYMBOL: { JSAtomStruct *p1, *p2; if (tag1 != tag2) { res = false; } else { p1 = JS_VALUE_GET_PTR(op1); p2 = JS_VALUE_GET_PTR(op2); res = (p1 == p2); } } break; case JS_TAG_OBJECT: if (tag1 != tag2) res = false; else res = JS_VALUE_GET_OBJ(op1) == JS_VALUE_GET_OBJ(op2); break; case JS_TAG_INT: d1 = JS_VALUE_GET_INT(op1); if (tag2 == JS_TAG_INT) { d2 = JS_VALUE_GET_INT(op2); goto number_test; } else if (tag2 == JS_TAG_FLOAT64) { d2 = JS_VALUE_GET_FLOAT64(op2); goto number_test; } else { res = false; } break; case JS_TAG_FLOAT64: d1 = JS_VALUE_GET_FLOAT64(op1); if (tag2 == JS_TAG_FLOAT64) { d2 = JS_VALUE_GET_FLOAT64(op2); } else if (tag2 == JS_TAG_INT) { d2 = JS_VALUE_GET_INT(op2); } else { res = false; break; } number_test: if (unlikely(eq_mode >= JS_EQ_SAME_VALUE)) { JSFloat64Union u1, u2; /* NaN is not always normalized, so this test is necessary */ if (isnan(d1) || isnan(d2)) { res = isnan(d1) == isnan(d2); } else if (eq_mode == JS_EQ_SAME_VALUE_ZERO) { res = (d1 == d2); /* +0 == -0 */ } else { u1.d = d1; u2.d = d2; res = (u1.u64 == u2.u64); /* +0 != -0 */ } } else { res = (d1 == d2); /* if NaN return false and +0 == -0 */ } goto done_no_free; case JS_TAG_BIG_INT: { bf_t a_s, *a, b_s, *b; if (tag1 != tag2) { res = false; break; } a = JS_ToBigInt1(ctx, &a_s, op1); b = JS_ToBigInt1(ctx, &b_s, op2); res = bf_cmp_eq(a, b); if (a == &a_s) bf_delete(a); if (b == &b_s) bf_delete(b); } break; default: res = false; break; } JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); done_no_free: return res; } static bool js_strict_eq(JSContext *ctx, JSValue op1, JSValue op2) { return js_strict_eq2(ctx, op1, op2, JS_EQ_STRICT); } static bool js_same_value(JSContext *ctx, JSValueConst op1, JSValueConst op2) { return js_strict_eq2(ctx, js_dup(op1), js_dup(op2), JS_EQ_SAME_VALUE); } static bool js_same_value_zero(JSContext *ctx, JSValueConst op1, JSValueConst op2) { return js_strict_eq2(ctx, js_dup(op1), js_dup(op2), JS_EQ_SAME_VALUE_ZERO); } static no_inline int js_strict_eq_slow(JSContext *ctx, JSValue *sp, bool is_neq) { bool res; res = js_strict_eq(ctx, sp[-2], sp[-1]); sp[-2] = js_bool(res ^ is_neq); return 0; } static __exception int js_operator_in(JSContext *ctx, JSValue *sp) { JSValue op1, op2; JSAtom atom; int ret; op1 = sp[-2]; op2 = sp[-1]; if (JS_VALUE_GET_TAG(op2) != JS_TAG_OBJECT) { JS_ThrowTypeError(ctx, "invalid 'in' operand"); return -1; } atom = JS_ValueToAtom(ctx, op1); if (unlikely(atom == JS_ATOM_NULL)) return -1; ret = JS_HasProperty(ctx, op2, atom); JS_FreeAtom(ctx, atom); if (ret < 0) return -1; JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); sp[-2] = js_bool(ret); return 0; } static __exception int js_operator_private_in(JSContext *ctx, JSValue *sp) { JSValue op1, op2; int ret; op1 = sp[-2]; /* object */ op2 = sp[-1]; /* field name or method function */ if (JS_VALUE_GET_TAG(op1) != JS_TAG_OBJECT) { JS_ThrowTypeError(ctx, "invalid 'in' operand"); return -1; } if (JS_IsObject(op2)) { /* method: use the brand */ ret = JS_CheckBrand(ctx, op1, op2); if (ret < 0) return -1; } else { JSAtom atom; JSObject *p; JSShapeProperty *prs; JSProperty *pr; /* field */ atom = JS_ValueToAtom(ctx, op2); if (unlikely(atom == JS_ATOM_NULL)) return -1; p = JS_VALUE_GET_OBJ(op1); prs = find_own_property(&pr, p, atom); JS_FreeAtom(ctx, atom); ret = (prs != NULL); } JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); sp[-2] = JS_NewBool(ctx, ret); return 0; } static __exception int js_has_unscopable(JSContext *ctx, JSValue obj, JSAtom atom) { JSValue arr, val; int ret; arr = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_unscopables); if (JS_IsException(arr)) return -1; ret = 0; if (JS_IsObject(arr)) { val = JS_GetProperty(ctx, arr, atom); ret = JS_ToBoolFree(ctx, val); } JS_FreeValue(ctx, arr); return ret; } static __exception int js_operator_instanceof(JSContext *ctx, JSValue *sp) { JSValue op1, op2; int ret; op1 = sp[-2]; op2 = sp[-1]; ret = JS_IsInstanceOf(ctx, op1, op2); if (ret < 0) return ret; JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); sp[-2] = js_bool(ret); return 0; } static __exception int js_operator_typeof(JSContext *ctx, JSValue op1) { JSAtom atom; uint32_t tag; tag = JS_VALUE_GET_NORM_TAG(op1); switch(tag) { case JS_TAG_BIG_INT: atom = JS_ATOM_bigint; break; case JS_TAG_INT: case JS_TAG_FLOAT64: atom = JS_ATOM_number; break; case JS_TAG_UNDEFINED: atom = JS_ATOM_undefined; break; case JS_TAG_BOOL: atom = JS_ATOM_boolean; break; case JS_TAG_STRING: atom = JS_ATOM_string; break; case JS_TAG_OBJECT: { JSObject *p; p = JS_VALUE_GET_OBJ(op1); if (unlikely(p->is_HTMLDDA)) atom = JS_ATOM_undefined; else if (JS_IsFunction(ctx, op1)) atom = JS_ATOM_function; else goto obj_type; } break; case JS_TAG_NULL: obj_type: atom = JS_ATOM_object; break; case JS_TAG_SYMBOL: atom = JS_ATOM_symbol; break; default: atom = JS_ATOM_unknown; break; } return atom; } static __exception int js_operator_delete(JSContext *ctx, JSValue *sp) { JSValue op1, op2; JSAtom atom; int ret; op1 = sp[-2]; op2 = sp[-1]; atom = JS_ValueToAtom(ctx, op2); if (unlikely(atom == JS_ATOM_NULL)) return -1; ret = JS_DeleteProperty(ctx, op1, atom, JS_PROP_THROW_STRICT); JS_FreeAtom(ctx, atom); if (unlikely(ret < 0)) return -1; JS_FreeValue(ctx, op1); JS_FreeValue(ctx, op2); sp[-2] = js_bool(ret); return 0; } static JSValue js_throw_type_error(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv) { return JS_ThrowTypeError(ctx, "invalid property access"); } /* XXX: not 100% compatible, but mozilla seems to use a similar implementation to ensure that caller in non strict mode does not throw (ES5 compatibility) */ static JSValue js_function_proto_caller(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv) { JSFunctionBytecode *b = JS_GetFunctionBytecode(this_val); if (!b || b->is_strict_mode || !b->has_prototype) { return js_throw_type_error(ctx, this_val, 0, NULL); } return JS_UNDEFINED; } static JSValue js_function_proto_fileName(JSContext *ctx, JSValueConst this_val) { JSFunctionBytecode *b = JS_GetFunctionBytecode(this_val); if (b) { return JS_AtomToString(ctx, b->filename); } return JS_UNDEFINED; } static JSValue js_function_proto_int32(JSContext *ctx, JSValueConst this_val, int magic) { JSFunctionBytecode *b = JS_GetFunctionBytecode(this_val); if (b) { int *field = (int *) ((char *)b + magic); return js_int32(*field); } return JS_UNDEFINED; } static int js_arguments_define_own_property(JSContext *ctx, JSValueConst this_obj, JSAtom prop, JSValueConst val, JSValueConst getter, JSValueConst setter, int flags) { JSObject *p; uint32_t idx; p = JS_VALUE_GET_OBJ(this_obj); /* convert to normal array when redefining an existing numeric field */ if (p->fast_array && JS_AtomIsArrayIndex(ctx, &idx, prop) && idx < p->u.array.count) { if (convert_fast_array_to_array(ctx, p)) return -1; } /* run the default define own property */ return JS_DefineProperty(ctx, this_obj, prop, val, getter, setter, flags | JS_PROP_NO_EXOTIC); } static const JSClassExoticMethods js_arguments_exotic_methods = { .define_own_property = js_arguments_define_own_property, }; static JSValue js_build_arguments(JSContext *ctx, int argc, JSValueConst *argv) { JSValue val, *tab; JSProperty *pr; JSObject *p; int i; val = JS_NewObjectProtoClass(ctx, ctx->class_proto[JS_CLASS_OBJECT], JS_CLASS_ARGUMENTS); if (JS_IsException(val)) return val; p = JS_VALUE_GET_OBJ(val); /* add the length field (cannot fail) */ pr = add_property(ctx, p, JS_ATOM_length, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); if (!pr) { JS_FreeValue(ctx, val); return JS_EXCEPTION; } pr->u.value = js_int32(argc); /* initialize the fast array part */ tab = NULL; if (argc > 0) { tab = js_malloc(ctx, sizeof(tab[0]) * argc); if (!tab) { JS_FreeValue(ctx, val); return JS_EXCEPTION; } for(i = 0; i < argc; i++) { tab[i] = js_dup(argv[i]); } } p->u.array.u.values = tab; p->u.array.count = argc; JS_DefinePropertyValue(ctx, val, JS_ATOM_Symbol_iterator, js_dup(ctx->array_proto_values), JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE); /* add callee property to throw a TypeError in strict mode */ JS_DefineProperty(ctx, val, JS_ATOM_callee, JS_UNDEFINED, ctx->throw_type_error, ctx->throw_type_error, JS_PROP_HAS_GET | JS_PROP_HAS_SET); return val; } #define GLOBAL_VAR_OFFSET 0x40000000 #define ARGUMENT_VAR_OFFSET 0x20000000 /* legacy arguments object: add references to the function arguments */ static JSValue js_build_mapped_arguments(JSContext *ctx, int argc, JSValueConst *argv, JSStackFrame *sf, int arg_count) { JSValue val; JSProperty *pr; JSObject *p; int i; val = JS_NewObjectProtoClass(ctx, ctx->class_proto[JS_CLASS_OBJECT], JS_CLASS_MAPPED_ARGUMENTS); if (JS_IsException(val)) return val; p = JS_VALUE_GET_OBJ(val); /* add the length field (cannot fail) */ pr = add_property(ctx, p, JS_ATOM_length, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); if (!pr) goto fail; pr->u.value = js_int32(argc); for(i = 0; i < arg_count; i++) { JSVarRef *var_ref; var_ref = get_var_ref(ctx, sf, i, true); if (!var_ref) goto fail; pr = add_property(ctx, p, __JS_AtomFromUInt32(i), JS_PROP_C_W_E | JS_PROP_VARREF); if (!pr) { free_var_ref(ctx->rt, var_ref); goto fail; } pr->u.var_ref = var_ref; } /* the arguments not mapped to the arguments of the function can be normal properties */ for(i = arg_count; i < argc; i++) { if (JS_DefinePropertyValueUint32(ctx, val, i, js_dup(argv[i]), JS_PROP_C_W_E) < 0) goto fail; } JS_DefinePropertyValue(ctx, val, JS_ATOM_Symbol_iterator, js_dup(ctx->array_proto_values), JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE); /* callee returns this function in non strict mode */ JS_DefinePropertyValue(ctx, val, JS_ATOM_callee, js_dup(ctx->rt->current_stack_frame->cur_func), JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE); return val; fail: JS_FreeValue(ctx, val); return JS_EXCEPTION; } static JSValue build_for_in_iterator(JSContext *ctx, JSValue obj) { JSObject *p; JSPropertyEnum *tab_atom; int i; JSValue enum_obj, obj1; JSForInIterator *it; uint32_t tag, tab_atom_count; tag = JS_VALUE_GET_TAG(obj); if (tag != JS_TAG_OBJECT && tag != JS_TAG_NULL && tag != JS_TAG_UNDEFINED) { obj = JS_ToObjectFree(ctx, obj); } it = js_malloc(ctx, sizeof(*it)); if (!it) { JS_FreeValue(ctx, obj); return JS_EXCEPTION; } enum_obj = JS_NewObjectProtoClass(ctx, JS_NULL, JS_CLASS_FOR_IN_ITERATOR); if (JS_IsException(enum_obj)) { js_free(ctx, it); JS_FreeValue(ctx, obj); return JS_EXCEPTION; } it->is_array = false; it->obj = obj; it->idx = 0; p = JS_VALUE_GET_OBJ(enum_obj); p->u.for_in_iterator = it; if (tag == JS_TAG_NULL || tag == JS_TAG_UNDEFINED) return enum_obj; /* fast path: assume no enumerable properties in the prototype chain */ obj1 = js_dup(obj); for(;;) { obj1 = JS_GetPrototypeFree(ctx, obj1); if (JS_IsNull(obj1)) break; if (JS_IsException(obj1)) goto fail; if (JS_GetOwnPropertyNamesInternal(ctx, &tab_atom, &tab_atom_count, JS_VALUE_GET_OBJ(obj1), JS_GPN_STRING_MASK | JS_GPN_ENUM_ONLY)) { JS_FreeValue(ctx, obj1); goto fail; } js_free_prop_enum(ctx, tab_atom, tab_atom_count); if (tab_atom_count != 0) { JS_FreeValue(ctx, obj1); goto slow_path; } /* must check for timeout to avoid infinite loop */ if (js_poll_interrupts(ctx)) { JS_FreeValue(ctx, obj1); goto fail; } } p = JS_VALUE_GET_OBJ(obj); if (p->fast_array) { JSShape *sh; JSShapeProperty *prs; /* check that there are no enumerable normal fields */ sh = p->shape; for(i = 0, prs = get_shape_prop(sh); i < sh->prop_count; i++, prs++) { if (prs->flags & JS_PROP_ENUMERABLE) goto normal_case; } /* for fast arrays, we only store the number of elements */ it->is_array = true; it->array_length = p->u.array.count; } else { normal_case: if (JS_GetOwnPropertyNamesInternal(ctx, &tab_atom, &tab_atom_count, p, JS_GPN_STRING_MASK | JS_GPN_ENUM_ONLY)) goto fail; for(i = 0; i < tab_atom_count; i++) { JS_SetPropertyInternal(ctx, enum_obj, tab_atom[i].atom, JS_NULL, 0); } js_free_prop_enum(ctx, tab_atom, tab_atom_count); } return enum_obj; slow_path: /* non enumerable properties hide the enumerables ones in the prototype chain */ obj1 = js_dup(obj); for(;;) { if (JS_GetOwnPropertyNamesInternal(ctx, &tab_atom, &tab_atom_count, JS_VALUE_GET_OBJ(obj1), JS_GPN_STRING_MASK | JS_GPN_SET_ENUM)) { JS_FreeValue(ctx, obj1); goto fail; } for(i = 0; i < tab_atom_count; i++) { JS_DefinePropertyValue(ctx, enum_obj, tab_atom[i].atom, JS_NULL, (tab_atom[i].is_enumerable ? JS_PROP_ENUMERABLE : 0)); } js_free_prop_enum(ctx, tab_atom, tab_atom_count); obj1 = JS_GetPrototypeFree(ctx, obj1); if (JS_IsNull(obj1)) break; if (JS_IsException(obj1)) goto fail; /* must check for timeout to avoid infinite loop */ if (js_poll_interrupts(ctx)) { JS_FreeValue(ctx, obj1); goto fail; } } return enum_obj; fail: JS_FreeValue(ctx, enum_obj); return JS_EXCEPTION; } /* obj -> enum_obj */ static __exception int js_for_in_start(JSContext *ctx, JSValue *sp) { sp[-1] = build_for_in_iterator(ctx, sp[-1]); if (JS_IsException(sp[-1])) return -1; return 0; } /* enum_obj -> enum_obj value done */ static __exception int js_for_in_next(JSContext *ctx, JSValue *sp) { JSValue enum_obj; JSObject *p; JSAtom prop; JSForInIterator *it; int ret; enum_obj = sp[-1]; /* fail safe */ if (JS_VALUE_GET_TAG(enum_obj) != JS_TAG_OBJECT) goto done; p = JS_VALUE_GET_OBJ(enum_obj); if (p->class_id != JS_CLASS_FOR_IN_ITERATOR) goto done; it = p->u.for_in_iterator; for(;;) { if (it->is_array) { if (it->idx >= it->array_length) goto done; prop = __JS_AtomFromUInt32(it->idx); it->idx++; } else { JSShape *sh = p->shape; JSShapeProperty *prs; if (it->idx >= sh->prop_count) goto done; prs = get_shape_prop(sh) + it->idx; prop = prs->atom; it->idx++; if (prop == JS_ATOM_NULL || !(prs->flags & JS_PROP_ENUMERABLE)) continue; } // check if the property was deleted unless we're dealing with a proxy JSValue obj = it->obj; if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { JSObject *p = JS_VALUE_GET_OBJ(obj); if (p->class_id == JS_CLASS_PROXY) break; } ret = JS_HasProperty(ctx, obj, prop); if (ret < 0) return ret; if (ret) break; } /* return the property */ sp[0] = JS_AtomToValue(ctx, prop); sp[1] = JS_FALSE; return 0; done: /* return the end */ sp[0] = JS_UNDEFINED; sp[1] = JS_TRUE; return 0; } static JSValue JS_GetIterator2(JSContext *ctx, JSValueConst obj, JSValueConst method) { JSValue enum_obj; enum_obj = JS_Call(ctx, method, obj, 0, NULL); if (JS_IsException(enum_obj)) return enum_obj; if (!JS_IsObject(enum_obj)) { JS_FreeValue(ctx, enum_obj); return JS_ThrowTypeErrorNotAnObject(ctx); } return enum_obj; } static JSValue JS_GetIterator(JSContext *ctx, JSValueConst obj, bool is_async) { JSValue method, ret, sync_iter; if (is_async) { method = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_asyncIterator); if (JS_IsException(method)) return method; if (JS_IsUndefined(method) || JS_IsNull(method)) { method = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_iterator); if (JS_IsException(method)) return method; sync_iter = JS_GetIterator2(ctx, obj, method); JS_FreeValue(ctx, method); if (JS_IsException(sync_iter)) return sync_iter; ret = JS_CreateAsyncFromSyncIterator(ctx, sync_iter); JS_FreeValue(ctx, sync_iter); return ret; } } else { method = JS_GetProperty(ctx, obj, JS_ATOM_Symbol_iterator); if (JS_IsException(method)) return method; } if (!JS_IsFunction(ctx, method)) { JS_FreeValue(ctx, method); return JS_ThrowTypeError(ctx, "value is not iterable"); } ret = JS_GetIterator2(ctx, obj, method); JS_FreeValue(ctx, method); return ret; } /* return *pdone = 2 if the iterator object is not parsed */ static JSValue JS_IteratorNext2(JSContext *ctx, JSValueConst enum_obj, JSValueConst method, int argc, JSValueConst *argv, int *pdone) { JSValue obj; /* fast path for the built-in iterators (avoid creating the intermediate result object) */ if (JS_IsObject(method)) { JSObject *p = JS_VALUE_GET_OBJ(method); if (p->class_id == JS_CLASS_C_FUNCTION && p->u.cfunc.cproto == JS_CFUNC_iterator_next) { JSCFunctionType func; JSValueConst args[1]; /* in case the function expects one argument */ if (argc == 0) { args[0] = JS_UNDEFINED; argv = args; } func = p->u.cfunc.c_function; return func.iterator_next(ctx, enum_obj, argc, argv, pdone, p->u.cfunc.magic); } } obj = JS_Call(ctx, method, enum_obj, argc, argv); if (JS_IsException(obj)) goto fail; if (!JS_IsObject(obj)) { JS_FreeValue(ctx, obj); JS_ThrowTypeError(ctx, "iterator must return an object"); goto fail; } *pdone = 2; return obj; fail: *pdone = false; return JS_EXCEPTION; } static JSValue JS_IteratorNext(JSContext *ctx, JSValueConst enum_obj, JSValueConst method, int argc, JSValueConst *argv, int *pdone) { JSValue obj, value, done_val; int done; obj = JS_IteratorNext2(ctx, enum_obj, method, argc, argv, &done); if (JS_IsException(obj)) goto fail; if (done != 2) { *pdone = done; return obj; } else { done_val = JS_GetProperty(ctx, obj, JS_ATOM_done); if (JS_IsException(done_val)) goto fail; *pdone = JS_ToBoolFree(ctx, done_val); value = JS_UNDEFINED; if (!*pdone) { value = JS_GetProperty(ctx, obj, JS_ATOM_value); } JS_FreeValue(ctx, obj); return value; } fail: JS_FreeValue(ctx, obj); *pdone = false; return JS_EXCEPTION; } /* return < 0 in case of exception */ static int JS_IteratorClose(JSContext *ctx, JSValueConst enum_obj, bool is_exception_pending) { JSValue method, ret, ex_obj; int res; if (is_exception_pending) { ex_obj = ctx->rt->current_exception; ctx->rt->current_exception = JS_UNINITIALIZED; res = -1; } else { ex_obj = JS_UNDEFINED; res = 0; } method = JS_GetProperty(ctx, enum_obj, JS_ATOM_return); if (JS_IsException(method)) { res = -1; goto done; } if (JS_IsUndefined(method) || JS_IsNull(method)) { goto done; } ret = JS_CallFree(ctx, method, enum_obj, 0, NULL); if (!is_exception_pending) { if (JS_IsException(ret)) { res = -1; } else if (!JS_IsObject(ret)) { JS_ThrowTypeErrorNotAnObject(ctx); res = -1; } } JS_FreeValue(ctx, ret); done: if (is_exception_pending) { JS_Throw(ctx, ex_obj); } return res; } /* obj -> enum_rec (3 slots) */ static __exception int js_for_of_start(JSContext *ctx, JSValue *sp, bool is_async) { JSValue op1, obj, method; op1 = sp[-1]; obj = JS_GetIterator(ctx, op1, is_async); if (JS_IsException(obj)) return -1; JS_FreeValue(ctx, op1); sp[-1] = obj; method = JS_GetProperty(ctx, obj, JS_ATOM_next); if (JS_IsException(method)) return -1; sp[0] = method; return 0; } /* enum_rec [objs] -> enum_rec [objs] value done. There are 'offset' objs. If 'done' is true or in case of exception, 'enum_rec' is set to undefined. If 'done' is true, 'value' is always set to undefined. */ static __exception int js_for_of_next(JSContext *ctx, JSValue *sp, int offset) { JSValue value = JS_UNDEFINED; int done = 1; if (likely(!JS_IsUndefined(sp[offset]))) { value = JS_IteratorNext(ctx, sp[offset], sp[offset + 1], 0, NULL, &done); if (JS_IsException(value)) done = -1; if (done) { /* value is JS_UNDEFINED or JS_EXCEPTION */ /* replace the iteration object with undefined */ JS_FreeValue(ctx, sp[offset]); sp[offset] = JS_UNDEFINED; if (done < 0) { return -1; } else { JS_FreeValue(ctx, value); value = JS_UNDEFINED; } } } sp[0] = value; sp[1] = js_bool(done); return 0; } static JSValue JS_IteratorGetCompleteValue(JSContext *ctx, JSValue obj, int *pdone) { JSValue done_val, value; int done; done_val = JS_GetProperty(ctx, obj, JS_ATOM_done); if (JS_IsException(done_val)) goto fail; done = JS_ToBoolFree(ctx, done_val); value = JS_GetProperty(ctx, obj, JS_ATOM_value); if (JS_IsException(value)) goto fail; *pdone = done; return value; fail: *pdone = false; return JS_EXCEPTION; } static __exception int js_iterator_get_value_done(JSContext *ctx, JSValue *sp) { JSValue obj, value; int done; obj = sp[-1]; if (!JS_IsObject(obj)) { JS_ThrowTypeError(ctx, "iterator must return an object"); return -1; } value = JS_IteratorGetCompleteValue(ctx, obj, &done); if (JS_IsException(value)) return -1; JS_FreeValue(ctx, obj); sp[-1] = value; sp[0] = js_bool(done); return 0; } static JSValue js_create_iterator_result(JSContext *ctx, JSValue val, bool done) { JSValue obj; obj = JS_NewObject(ctx); if (JS_IsException(obj)) { JS_FreeValue(ctx, val); return obj; } if (JS_DefinePropertyValue(ctx, obj, JS_ATOM_value, val, JS_PROP_C_W_E) < 0) { goto fail; } if (JS_DefinePropertyValue(ctx, obj, JS_ATOM_done, js_bool(done), JS_PROP_C_W_E) < 0) { fail: JS_FreeValue(ctx, obj); return JS_EXCEPTION; } return obj; } static JSValue js_array_iterator_next(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int *pdone, int magic); static JSValue js_create_array_iterator(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic); static bool js_is_fast_array(JSContext *ctx, JSValue obj) { /* Try and handle fast arrays explicitly */ if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { JSObject *p = JS_VALUE_GET_OBJ(obj); if (p->class_id == JS_CLASS_ARRAY && p->fast_array) { return true; } } return false; } /* Access an Array's internal JSValue array if available */ static bool js_get_fast_array(JSContext *ctx, JSValue obj, JSValue **arrpp, uint32_t *countp) { /* Try and handle fast arrays explicitly */ if (JS_VALUE_GET_TAG(obj) == JS_TAG_OBJECT) { JSObject *p = JS_VALUE_GET_OBJ(obj); if (p->class_id == JS_CLASS_ARRAY && p->fast_array) { *countp = p->u.array.count; *arrpp = p->u.array.u.values; return true; } } return false; } static __exception int js_append_enumerate(JSContext *ctx, JSValue *sp) { JSValue iterator, enumobj, method, value; int is_array_iterator; JSValue *arrp; uint32_t i, count32, pos; if (JS_VALUE_GET_TAG(sp[-2]) != JS_TAG_INT) { JS_ThrowInternalError(ctx, "invalid index for append"); return -1; } pos = JS_VALUE_GET_INT(sp[-2]); /* XXX: further optimisations: - use ctx->array_proto_values? - check if array_iterator_prototype next method is built-in and avoid constructing actual iterator object? - build this into js_for_of_start and use in all `for (x of o)` loops */ iterator = JS_GetProperty(ctx, sp[-1], JS_ATOM_Symbol_iterator); if (JS_IsException(iterator)) return -1; /* Used to squelch a -Wcast-function-type warning. */ JSCFunctionType ft = { .generic_magic = js_create_array_iterator }; is_array_iterator = JS_IsCFunction(ctx, iterator, ft.generic, JS_ITERATOR_KIND_VALUE); JS_FreeValue(ctx, iterator); enumobj = JS_GetIterator(ctx, sp[-1], false); if (JS_IsException(enumobj)) return -1; method = JS_GetProperty(ctx, enumobj, JS_ATOM_next); if (JS_IsException(method)) { JS_FreeValue(ctx, enumobj); return -1; } /* Used to squelch a -Wcast-function-type warning. */ JSCFunctionType ft2 = { .iterator_next = js_array_iterator_next }; if (is_array_iterator && JS_IsCFunction(ctx, method, ft2.generic, 0) && js_get_fast_array(ctx, sp[-1], &arrp, &count32)) { uint32_t len; if (js_get_length32(ctx, &len, sp[-1])) goto exception; /* if len > count32, the elements >= count32 might be read in the prototypes and might have side effects */ if (len != count32) goto general_case; /* Handle fast arrays explicitly */ for (i = 0; i < count32; i++) { if (JS_DefinePropertyValueUint32(ctx, sp[-3], pos++, js_dup(arrp[i]), JS_PROP_C_W_E) < 0) goto exception; } } else { general_case: for (;;) { int done; value = JS_IteratorNext(ctx, enumobj, method, 0, NULL, &done); if (JS_IsException(value)) goto exception; if (done) { /* value is JS_UNDEFINED */ break; } if (JS_DefinePropertyValueUint32(ctx, sp[-3], pos++, value, JS_PROP_C_W_E) < 0) goto exception; } } /* Note: could raise an error if too many elements */ sp[-2] = js_int32(pos); JS_FreeValue(ctx, enumobj); JS_FreeValue(ctx, method); return 0; exception: JS_IteratorClose(ctx, enumobj, true); JS_FreeValue(ctx, enumobj); JS_FreeValue(ctx, method); return -1; } static __exception int JS_CopyDataProperties(JSContext *ctx, JSValue target, JSValue source, JSValue excluded, bool setprop) { JSPropertyEnum *tab_atom; JSValue val; uint32_t i, tab_atom_count; JSObject *p; JSObject *pexcl = NULL; int ret, gpn_flags; JSPropertyDescriptor desc; bool is_enumerable; if (JS_VALUE_GET_TAG(source) != JS_TAG_OBJECT) return 0; if (JS_VALUE_GET_TAG(excluded) == JS_TAG_OBJECT) pexcl = JS_VALUE_GET_OBJ(excluded); p = JS_VALUE_GET_OBJ(source); gpn_flags = JS_GPN_STRING_MASK | JS_GPN_SYMBOL_MASK | JS_GPN_ENUM_ONLY; if (p->is_exotic) { const JSClassExoticMethods *em = ctx->rt->class_array[p->class_id].exotic; /* cannot use JS_GPN_ENUM_ONLY with e.g. proxies because it introduces a visible change */ if (em && em->get_own_property_names) { gpn_flags &= ~JS_GPN_ENUM_ONLY; } } if (JS_GetOwnPropertyNamesInternal(ctx, &tab_atom, &tab_atom_count, p, gpn_flags)) return -1; for (i = 0; i < tab_atom_count; i++) { if (pexcl) { ret = JS_GetOwnPropertyInternal(ctx, NULL, pexcl, tab_atom[i].atom); if (ret) { if (ret < 0) goto exception; continue; } } if (!(gpn_flags & JS_GPN_ENUM_ONLY)) { /* test if the property is enumerable */ ret = JS_GetOwnPropertyInternal(ctx, &desc, p, tab_atom[i].atom); if (ret < 0) goto exception; if (!ret) continue; is_enumerable = (desc.flags & JS_PROP_ENUMERABLE) != 0; js_free_desc(ctx, &desc); if (!is_enumerable) continue; } val = JS_GetProperty(ctx, source, tab_atom[i].atom); if (JS_IsException(val)) goto exception; if (setprop) ret = JS_SetProperty(ctx, target, tab_atom[i].atom, val); else ret = JS_DefinePropertyValue(ctx, target, tab_atom[i].atom, val, JS_PROP_C_W_E); if (ret < 0) goto exception; } js_free_prop_enum(ctx, tab_atom, tab_atom_count); return 0; exception: js_free_prop_enum(ctx, tab_atom, tab_atom_count); return -1; } /* only valid inside C functions */ static JSValueConst JS_GetActiveFunction(JSContext *ctx) { return ctx->rt->current_stack_frame->cur_func; } static JSVarRef *get_var_ref(JSContext *ctx, JSStackFrame *sf, int var_idx, bool is_arg) { JSVarRef *var_ref; struct list_head *el; list_for_each(el, &sf->var_ref_list) { var_ref = list_entry(el, JSVarRef, header.link); if (var_ref->var_idx == var_idx && var_ref->is_arg == is_arg) { var_ref->header.ref_count++; return var_ref; } } /* create a new one */ var_ref = js_malloc(ctx, sizeof(JSVarRef)); if (!var_ref) return NULL; var_ref->header.ref_count = 1; var_ref->is_detached = false; var_ref->is_arg = is_arg; var_ref->var_idx = var_idx; list_add_tail(&var_ref->header.link, &sf->var_ref_list); if (is_arg) var_ref->pvalue = &sf->arg_buf[var_idx]; else var_ref->pvalue = &sf->var_buf[var_idx]; var_ref->value = JS_UNDEFINED; return var_ref; } static JSValue js_closure2(JSContext *ctx, JSValue func_obj, JSFunctionBytecode *b, JSVarRef **cur_var_refs, JSStackFrame *sf) { JSObject *p; JSVarRef **var_refs; int i; p = JS_VALUE_GET_OBJ(func_obj); p->u.func.function_bytecode = b; p->u.func.home_object = NULL; p->u.func.var_refs = NULL; if (b->closure_var_count) { var_refs = js_mallocz(ctx, sizeof(var_refs[0]) * b->closure_var_count); if (!var_refs) goto fail; p->u.func.var_refs = var_refs; for(i = 0; i < b->closure_var_count; i++) { JSClosureVar *cv = &b->closure_var[i]; JSVarRef *var_ref; if (cv->is_local) { /* reuse the existing variable reference if it already exists */ var_ref = get_var_ref(ctx, sf, cv->var_idx, cv->is_arg); if (!var_ref) goto fail; } else { var_ref = cur_var_refs[cv->var_idx]; var_ref->header.ref_count++; } var_refs[i] = var_ref; } } return func_obj; fail: /* bfunc is freed when func_obj is freed */ JS_FreeValue(ctx, func_obj); return JS_EXCEPTION; } static JSValue js_instantiate_prototype(JSContext *ctx, JSObject *p, JSAtom atom, void *opaque) { JSValue obj, this_val; int ret; this_val = JS_MKPTR(JS_TAG_OBJECT, p); obj = JS_NewObject(ctx); if (JS_IsException(obj)) return JS_EXCEPTION; set_cycle_flag(ctx, obj); set_cycle_flag(ctx, this_val); ret = JS_DefinePropertyValue(ctx, obj, JS_ATOM_constructor, js_dup(this_val), JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE); if (ret < 0) { JS_FreeValue(ctx, obj); return JS_EXCEPTION; } return obj; } static const uint16_t func_kind_to_class_id[] = { [JS_FUNC_NORMAL] = JS_CLASS_BYTECODE_FUNCTION, [JS_FUNC_GENERATOR] = JS_CLASS_GENERATOR_FUNCTION, [JS_FUNC_ASYNC] = JS_CLASS_ASYNC_FUNCTION, [JS_FUNC_ASYNC_GENERATOR] = JS_CLASS_ASYNC_GENERATOR_FUNCTION, }; static JSValue js_closure(JSContext *ctx, JSValue bfunc, JSVarRef **cur_var_refs, JSStackFrame *sf) { JSFunctionBytecode *b; JSValue func_obj; JSAtom name_atom; b = JS_VALUE_GET_PTR(bfunc); func_obj = JS_NewObjectClass(ctx, func_kind_to_class_id[b->func_kind]); if (JS_IsException(func_obj)) { JS_FreeValue(ctx, bfunc); return JS_EXCEPTION; } func_obj = js_closure2(ctx, func_obj, b, cur_var_refs, sf); if (JS_IsException(func_obj)) { /* bfunc has been freed */ goto fail; } name_atom = b->func_name; if (name_atom == JS_ATOM_NULL) name_atom = JS_ATOM_empty_string; js_function_set_properties(ctx, func_obj, name_atom, b->defined_arg_count); if (b->func_kind & JS_FUNC_GENERATOR) { JSValue proto; int proto_class_id; /* generators have a prototype field which is used as prototype for the generator object */ if (b->func_kind == JS_FUNC_ASYNC_GENERATOR) proto_class_id = JS_CLASS_ASYNC_GENERATOR; else proto_class_id = JS_CLASS_GENERATOR; proto = JS_NewObjectProto(ctx, ctx->class_proto[proto_class_id]); if (JS_IsException(proto)) goto fail; JS_DefinePropertyValue(ctx, func_obj, JS_ATOM_prototype, proto, JS_PROP_WRITABLE); } else if (b->has_prototype) { /* add the 'prototype' property: delay instantiation to avoid creating cycles for every javascript function. The prototype object is created on the fly when first accessed */ JS_SetConstructorBit(ctx, func_obj, true); JS_DefineAutoInitProperty(ctx, func_obj, JS_ATOM_prototype, JS_AUTOINIT_ID_PROTOTYPE, NULL, JS_PROP_WRITABLE); } return func_obj; fail: /* bfunc is freed when func_obj is freed */ JS_FreeValue(ctx, func_obj); return JS_EXCEPTION; } #define JS_DEFINE_CLASS_HAS_HERITAGE (1 << 0) static int js_op_define_class(JSContext *ctx, JSValue *sp, JSAtom class_name, int class_flags, JSVarRef **cur_var_refs, JSStackFrame *sf, bool is_computed_name) { JSValue bfunc, parent_class, proto = JS_UNDEFINED; JSValue ctor = JS_UNDEFINED, parent_proto = JS_UNDEFINED; JSFunctionBytecode *b; parent_class = sp[-2]; bfunc = sp[-1]; if (class_flags & JS_DEFINE_CLASS_HAS_HERITAGE) { if (JS_IsNull(parent_class)) { parent_proto = JS_NULL; parent_class = js_dup(ctx->function_proto); } else { if (!JS_IsConstructor(ctx, parent_class)) { JS_ThrowTypeError(ctx, "parent class must be constructor"); goto fail; } parent_proto = JS_GetProperty(ctx, parent_class, JS_ATOM_prototype); if (JS_IsException(parent_proto)) goto fail; if (!JS_IsNull(parent_proto) && !JS_IsObject(parent_proto)) { JS_ThrowTypeError(ctx, "parent prototype must be an object or null"); goto fail; } } } else { /* parent_class is JS_UNDEFINED in this case */ parent_proto = js_dup(ctx->class_proto[JS_CLASS_OBJECT]); parent_class = js_dup(ctx->function_proto); } proto = JS_NewObjectProto(ctx, parent_proto); if (JS_IsException(proto)) goto fail; b = JS_VALUE_GET_PTR(bfunc); assert(b->func_kind == JS_FUNC_NORMAL); ctor = JS_NewObjectProtoClass(ctx, parent_class, JS_CLASS_BYTECODE_FUNCTION); if (JS_IsException(ctor)) goto fail; ctor = js_closure2(ctx, ctor, b, cur_var_refs, sf); bfunc = JS_UNDEFINED; if (JS_IsException(ctor)) goto fail; js_method_set_home_object(ctx, ctor, proto); JS_SetConstructorBit(ctx, ctor, true); JS_DefinePropertyValue(ctx, ctor, JS_ATOM_length, js_int32(b->defined_arg_count), JS_PROP_CONFIGURABLE); if (is_computed_name) { if (JS_DefineObjectNameComputed(ctx, ctor, sp[-3], JS_PROP_CONFIGURABLE) < 0) goto fail; } else { if (JS_DefineObjectName(ctx, ctor, class_name, JS_PROP_CONFIGURABLE) < 0) goto fail; } /* the constructor property must be first. It can be overriden by computed property names */ if (JS_DefinePropertyValue(ctx, proto, JS_ATOM_constructor, js_dup(ctor), JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE | JS_PROP_THROW) < 0) goto fail; /* set the prototype property */ if (JS_DefinePropertyValue(ctx, ctor, JS_ATOM_prototype, js_dup(proto), JS_PROP_THROW) < 0) goto fail; set_cycle_flag(ctx, ctor); set_cycle_flag(ctx, proto); JS_FreeValue(ctx, parent_proto); JS_FreeValue(ctx, parent_class); sp[-2] = ctor; sp[-1] = proto; return 0; fail: JS_FreeValue(ctx, parent_class); JS_FreeValue(ctx, parent_proto); JS_FreeValue(ctx, bfunc); JS_FreeValue(ctx, proto); JS_FreeValue(ctx, ctor); sp[-2] = JS_UNDEFINED; sp[-1] = JS_UNDEFINED; return -1; } static void close_var_refs(JSRuntime *rt, JSStackFrame *sf) { struct list_head *el, *el1; JSVarRef *var_ref; int var_idx; list_for_each_safe(el, el1, &sf->var_ref_list) { var_ref = list_entry(el, JSVarRef, header.link); var_idx = var_ref->var_idx; if (var_ref->is_arg) var_ref->value = js_dup(sf->arg_buf[var_idx]); else var_ref->value = js_dup(sf->var_buf[var_idx]); var_ref->pvalue = &var_ref->value; /* the reference is no longer to a local variable */ var_ref->is_detached = true; add_gc_object(rt, &var_ref->header, JS_GC_OBJ_TYPE_VAR_REF); } } static void close_lexical_var(JSContext *ctx, JSStackFrame *sf, int var_idx) { struct list_head *el, *el1; JSVarRef *var_ref; list_for_each_safe(el, el1, &sf->var_ref_list) { var_ref = list_entry(el, JSVarRef, header.link); if (var_idx == var_ref->var_idx && !var_ref->is_arg) { var_ref->value = js_dup(sf->var_buf[var_idx]); var_ref->pvalue = &var_ref->value; list_del(&var_ref->header.link); /* the reference is no longer to a local variable */ var_ref->is_detached = true; add_gc_object(ctx->rt, &var_ref->header, JS_GC_OBJ_TYPE_VAR_REF); } } } #define JS_CALL_FLAG_COPY_ARGV (1 << 1) #define JS_CALL_FLAG_GENERATOR (1 << 2) static JSValue js_call_c_function(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSRuntime *rt = ctx->rt; JSCFunctionType func; JSObject *p; JSStackFrame sf_s, *sf = &sf_s, *prev_sf; JSValue ret_val; JSValueConst *arg_buf; int arg_count, i; JSCFunctionEnum cproto; p = JS_VALUE_GET_OBJ(func_obj); cproto = p->u.cfunc.cproto; arg_count = p->u.cfunc.length; /* better to always check stack overflow */ if (js_check_stack_overflow(rt, sizeof(arg_buf[0]) * arg_count)) return JS_ThrowStackOverflow(ctx); prev_sf = rt->current_stack_frame; sf->prev_frame = prev_sf; rt->current_stack_frame = sf; ctx = p->u.cfunc.realm; /* change the current realm */ sf->is_strict_mode = false; sf->cur_func = unsafe_unconst(func_obj); sf->arg_count = argc; arg_buf = argv; if (unlikely(argc < arg_count)) { /* ensure that at least argc_count arguments are readable */ arg_buf = alloca(sizeof(arg_buf[0]) * arg_count); for(i = 0; i < argc; i++) arg_buf[i] = argv[i]; for(i = argc; i < arg_count; i++) arg_buf[i] = JS_UNDEFINED; sf->arg_count = arg_count; } sf->arg_buf = (JSValue *)arg_buf; func = p->u.cfunc.c_function; switch(cproto) { case JS_CFUNC_constructor: case JS_CFUNC_constructor_or_func: if (!(flags & JS_CALL_FLAG_CONSTRUCTOR)) { if (cproto == JS_CFUNC_constructor) { not_a_constructor: ret_val = JS_ThrowTypeError(ctx, "must be called with new"); break; } else { this_obj = JS_UNDEFINED; } } /* here this_obj is new_target */ /* fall thru */ case JS_CFUNC_generic: ret_val = func.generic(ctx, this_obj, argc, arg_buf); break; case JS_CFUNC_constructor_magic: case JS_CFUNC_constructor_or_func_magic: if (!(flags & JS_CALL_FLAG_CONSTRUCTOR)) { if (cproto == JS_CFUNC_constructor_magic) { goto not_a_constructor; } else { this_obj = JS_UNDEFINED; } } /* fall thru */ case JS_CFUNC_generic_magic: ret_val = func.generic_magic(ctx, this_obj, argc, arg_buf, p->u.cfunc.magic); break; case JS_CFUNC_getter: ret_val = func.getter(ctx, this_obj); break; case JS_CFUNC_setter: ret_val = func.setter(ctx, this_obj, arg_buf[0]); break; case JS_CFUNC_getter_magic: ret_val = func.getter_magic(ctx, this_obj, p->u.cfunc.magic); break; case JS_CFUNC_setter_magic: ret_val = func.setter_magic(ctx, this_obj, arg_buf[0], p->u.cfunc.magic); break; case JS_CFUNC_f_f: { double d1; if (unlikely(JS_ToFloat64(ctx, &d1, arg_buf[0]))) { ret_val = JS_EXCEPTION; break; } ret_val = js_number(func.f_f(d1)); } break; case JS_CFUNC_f_f_f: { double d1, d2; if (unlikely(JS_ToFloat64(ctx, &d1, arg_buf[0]))) { ret_val = JS_EXCEPTION; break; } if (unlikely(JS_ToFloat64(ctx, &d2, arg_buf[1]))) { ret_val = JS_EXCEPTION; break; } ret_val = js_number(func.f_f_f(d1, d2)); } break; case JS_CFUNC_iterator_next: { int done; ret_val = func.iterator_next(ctx, this_obj, argc, arg_buf, &done, p->u.cfunc.magic); if (!JS_IsException(ret_val) && done != 2) { ret_val = js_create_iterator_result(ctx, ret_val, done); } } break; default: abort(); } rt->current_stack_frame = sf->prev_frame; return ret_val; } static JSValue js_call_bound_function(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSObject *p; JSBoundFunction *bf; JSValueConst *arg_buf, new_target; int arg_count, i; p = JS_VALUE_GET_OBJ(func_obj); bf = p->u.bound_function; arg_count = bf->argc + argc; if (js_check_stack_overflow(ctx->rt, sizeof(JSValue) * arg_count)) return JS_ThrowStackOverflow(ctx); arg_buf = alloca(sizeof(JSValue) * arg_count); for(i = 0; i < bf->argc; i++) { arg_buf[i] = bf->argv[i]; } for(i = 0; i < argc; i++) { arg_buf[bf->argc + i] = argv[i]; } if (flags & JS_CALL_FLAG_CONSTRUCTOR) { new_target = this_obj; if (js_same_value(ctx, func_obj, new_target)) new_target = bf->func_obj; return JS_CallConstructor2(ctx, bf->func_obj, new_target, arg_count, arg_buf); } else { return JS_Call(ctx, bf->func_obj, bf->this_val, arg_count, arg_buf); } } /* argument of OP_special_object */ typedef enum { OP_SPECIAL_OBJECT_ARGUMENTS, OP_SPECIAL_OBJECT_MAPPED_ARGUMENTS, OP_SPECIAL_OBJECT_THIS_FUNC, OP_SPECIAL_OBJECT_NEW_TARGET, OP_SPECIAL_OBJECT_HOME_OBJECT, OP_SPECIAL_OBJECT_VAR_OBJECT, OP_SPECIAL_OBJECT_IMPORT_META, } OPSpecialObjectEnum; #define FUNC_RET_AWAIT 0 #define FUNC_RET_YIELD 1 #define FUNC_RET_YIELD_STAR 2 #ifdef ENABLE_DUMPS // JS_DUMP_BYTECODE_* static void dump_single_byte_code(JSContext *ctx, const uint8_t *pc, JSFunctionBytecode *b, int start_pos); static void print_func_name(JSFunctionBytecode *b); #endif static bool needs_backtrace(JSValue exc) { JSObject *p; if (JS_VALUE_GET_TAG(exc) != JS_TAG_OBJECT) return false; p = JS_VALUE_GET_OBJ(exc); if (p->class_id != JS_CLASS_ERROR) return false; return !find_own_property1(p, JS_ATOM_stack); } /* argv[] is modified if (flags & JS_CALL_FLAG_COPY_ARGV) = 0. */ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValueConst func_obj, JSValueConst this_obj, JSValueConst new_target, int argc, JSValueConst *argv, int flags) { JSRuntime *rt = caller_ctx->rt; JSContext *ctx; JSObject *p; JSFunctionBytecode *b; JSStackFrame sf_s, *sf = &sf_s; uint8_t *pc; int opcode, arg_allocated_size, i; JSValue *local_buf, *stack_buf, *var_buf, *arg_buf, *sp, ret_val, *pval; JSVarRef **var_refs; size_t alloca_size; #ifdef ENABLE_DUMPS // JS_DUMP_BYTECODE_STEP #define DUMP_BYTECODE_OR_DONT(pc) \ if (check_dump_flag(ctx->rt, JS_DUMP_BYTECODE_STEP)) dump_single_byte_code(ctx, pc, b, 0); #else #define DUMP_BYTECODE_OR_DONT(pc) #endif #if !DIRECT_DISPATCH #define SWITCH(pc) DUMP_BYTECODE_OR_DONT(pc) switch (opcode = *pc++) #define CASE(op) case op #define DEFAULT default #define BREAK break #else __extension__ static const void * const dispatch_table[256] = { #define DEF(id, size, n_pop, n_push, f) && case_OP_ ## id, #define def(id, size, n_pop, n_push, f) /* * QuickJS opcode definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef FMT FMT(none) FMT(none_int) FMT(none_loc) FMT(none_arg) FMT(none_var_ref) FMT(u8) FMT(i8) FMT(loc8) FMT(const8) FMT(label8) FMT(u16) FMT(i16) FMT(label16) FMT(npop) FMT(npopx) FMT(npop_u16) FMT(loc) FMT(arg) FMT(var_ref) FMT(u32) FMT(u32x2) FMT(i32) FMT(const) FMT(label) FMT(atom) FMT(atom_u8) FMT(atom_u16) FMT(atom_label_u8) FMT(atom_label_u16) FMT(label_u16) #undef FMT #endif /* FMT */ #ifdef DEF #ifndef def #define def(id, size, n_pop, n_push, f) DEF(id, size, n_pop, n_push, f) #endif DEF(invalid, 1, 0, 0, none) /* never emitted */ /* push values */ DEF( push_i32, 5, 0, 1, i32) DEF( push_const, 5, 0, 1, const) DEF( fclosure, 5, 0, 1, const) /* must follow push_const */ DEF(push_atom_value, 5, 0, 1, atom) DEF( private_symbol, 5, 0, 1, atom) DEF( undefined, 1, 0, 1, none) DEF( null, 1, 0, 1, none) DEF( push_this, 1, 0, 1, none) /* only used at the start of a function */ DEF( push_false, 1, 0, 1, none) DEF( push_true, 1, 0, 1, none) DEF( object, 1, 0, 1, none) DEF( special_object, 2, 0, 1, u8) /* only used at the start of a function */ DEF( rest, 3, 0, 1, u16) /* only used at the start of a function */ DEF( drop, 1, 1, 0, none) /* a -> */ DEF( nip, 1, 2, 1, none) /* a b -> b */ DEF( nip1, 1, 3, 2, none) /* a b c -> b c */ DEF( dup, 1, 1, 2, none) /* a -> a a */ DEF( dup1, 1, 2, 3, none) /* a b -> a a b */ DEF( dup2, 1, 2, 4, none) /* a b -> a b a b */ DEF( dup3, 1, 3, 6, none) /* a b c -> a b c a b c */ DEF( insert2, 1, 2, 3, none) /* obj a -> a obj a (dup_x1) */ DEF( insert3, 1, 3, 4, none) /* obj prop a -> a obj prop a (dup_x2) */ DEF( insert4, 1, 4, 5, none) /* this obj prop a -> a this obj prop a */ DEF( perm3, 1, 3, 3, none) /* obj a b -> a obj b */ DEF( perm4, 1, 4, 4, none) /* obj prop a b -> a obj prop b */ DEF( perm5, 1, 5, 5, none) /* this obj prop a b -> a this obj prop b */ DEF( swap, 1, 2, 2, none) /* a b -> b a */ DEF( swap2, 1, 4, 4, none) /* a b c d -> c d a b */ DEF( rot3l, 1, 3, 3, none) /* x a b -> a b x */ DEF( rot3r, 1, 3, 3, none) /* a b x -> x a b */ DEF( rot4l, 1, 4, 4, none) /* x a b c -> a b c x */ DEF( rot5l, 1, 5, 5, none) /* x a b c d -> a b c d x */ DEF(call_constructor, 3, 2, 1, npop) /* func new.target args -> ret. arguments are not counted in n_pop */ DEF( call, 3, 1, 1, npop) /* arguments are not counted in n_pop */ DEF( tail_call, 3, 1, 0, npop) /* arguments are not counted in n_pop */ DEF( call_method, 3, 2, 1, npop) /* arguments are not counted in n_pop */ DEF(tail_call_method, 3, 2, 0, npop) /* arguments are not counted in n_pop */ DEF( array_from, 3, 0, 1, npop) /* arguments are not counted in n_pop */ DEF( apply, 3, 3, 1, u16) DEF( return, 1, 1, 0, none) DEF( return_undef, 1, 0, 0, none) DEF(check_ctor_return, 1, 1, 2, none) DEF( check_ctor, 1, 0, 0, none) DEF( init_ctor, 1, 0, 1, none) DEF( check_brand, 1, 2, 2, none) /* this_obj func -> this_obj func */ DEF( add_brand, 1, 2, 0, none) /* this_obj home_obj -> */ DEF( return_async, 1, 1, 0, none) DEF( throw, 1, 1, 0, none) DEF( throw_error, 6, 0, 0, atom_u8) DEF( eval, 5, 1, 1, npop_u16) /* func args... -> ret_val */ DEF( apply_eval, 3, 2, 1, u16) /* func array -> ret_eval */ DEF( regexp, 1, 2, 1, none) /* create a RegExp object from the pattern and a bytecode string */ DEF( get_super, 1, 1, 1, none) DEF( import, 1, 1, 1, none) /* dynamic module import */ DEF( check_var, 5, 0, 1, atom) /* check if a variable exists */ DEF( get_var_undef, 5, 0, 1, atom) /* push undefined if the variable does not exist */ DEF( get_var, 5, 0, 1, atom) /* throw an exception if the variable does not exist */ DEF( put_var, 5, 1, 0, atom) /* must come after get_var */ DEF( put_var_init, 5, 1, 0, atom) /* must come after put_var. Used to initialize a global lexical variable */ DEF( put_var_strict, 5, 2, 0, atom) /* for strict mode variable write */ DEF( get_ref_value, 1, 2, 3, none) DEF( put_ref_value, 1, 3, 0, none) DEF( define_var, 6, 0, 0, atom_u8) DEF(check_define_var, 6, 0, 0, atom_u8) DEF( define_func, 6, 1, 0, atom_u8) // order matters, see IC counterparts DEF( get_field, 5, 1, 1, atom) DEF( get_field2, 5, 1, 2, atom) DEF( put_field, 5, 2, 0, atom) DEF( get_private_field, 1, 2, 1, none) /* obj prop -> value */ DEF( put_private_field, 1, 3, 0, none) /* obj value prop -> */ DEF(define_private_field, 1, 3, 1, none) /* obj prop value -> obj */ DEF( get_array_el, 1, 2, 1, none) DEF( get_array_el2, 1, 2, 2, none) /* obj prop -> obj value */ DEF( put_array_el, 1, 3, 0, none) DEF(get_super_value, 1, 3, 1, none) /* this obj prop -> value */ DEF(put_super_value, 1, 4, 0, none) /* this obj prop value -> */ DEF( define_field, 5, 2, 1, atom) DEF( set_name, 5, 1, 1, atom) DEF(set_name_computed, 1, 2, 2, none) DEF( set_proto, 1, 2, 1, none) DEF(set_home_object, 1, 2, 2, none) DEF(define_array_el, 1, 3, 2, none) DEF( append, 1, 3, 2, none) /* append enumerated object, update length */ DEF(copy_data_properties, 2, 3, 3, u8) DEF( define_method, 6, 2, 1, atom_u8) DEF(define_method_computed, 2, 3, 1, u8) /* must come after define_method */ DEF( define_class, 6, 2, 2, atom_u8) /* parent ctor -> ctor proto */ DEF( define_class_computed, 6, 3, 3, atom_u8) /* field_name parent ctor -> field_name ctor proto (class with computed name) */ DEF( get_loc, 3, 0, 1, loc) DEF( put_loc, 3, 1, 0, loc) /* must come after get_loc */ DEF( set_loc, 3, 1, 1, loc) /* must come after put_loc */ DEF( get_arg, 3, 0, 1, arg) DEF( put_arg, 3, 1, 0, arg) /* must come after get_arg */ DEF( set_arg, 3, 1, 1, arg) /* must come after put_arg */ DEF( get_var_ref, 3, 0, 1, var_ref) DEF( put_var_ref, 3, 1, 0, var_ref) /* must come after get_var_ref */ DEF( set_var_ref, 3, 1, 1, var_ref) /* must come after put_var_ref */ DEF(set_loc_uninitialized, 3, 0, 0, loc) DEF( get_loc_check, 3, 0, 1, loc) DEF( put_loc_check, 3, 1, 0, loc) /* must come after get_loc_check */ DEF( put_loc_check_init, 3, 1, 0, loc) DEF(get_var_ref_check, 3, 0, 1, var_ref) DEF(put_var_ref_check, 3, 1, 0, var_ref) /* must come after get_var_ref_check */ DEF(put_var_ref_check_init, 3, 1, 0, var_ref) DEF( close_loc, 3, 0, 0, loc) DEF( if_false, 5, 1, 0, label) DEF( if_true, 5, 1, 0, label) /* must come after if_false */ DEF( goto, 5, 0, 0, label) /* must come after if_true */ DEF( catch, 5, 0, 1, label) DEF( gosub, 5, 0, 0, label) /* used to execute the finally block */ DEF( ret, 1, 1, 0, none) /* used to return from the finally block */ DEF( nip_catch, 1, 2, 1, none) /* catch ... a -> a */ DEF( to_object, 1, 1, 1, none) //DEF( to_string, 1, 1, 1, none) DEF( to_propkey, 1, 1, 1, none) DEF( to_propkey2, 1, 2, 2, none) DEF( with_get_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_put_var, 10, 2, 1, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_delete_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_make_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_get_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_get_ref_undef, 10, 1, 0, atom_label_u8) DEF( make_loc_ref, 7, 0, 2, atom_u16) DEF( make_arg_ref, 7, 0, 2, atom_u16) DEF(make_var_ref_ref, 7, 0, 2, atom_u16) DEF( make_var_ref, 5, 0, 2, atom) DEF( for_in_start, 1, 1, 1, none) DEF( for_of_start, 1, 1, 3, none) DEF(for_await_of_start, 1, 1, 3, none) DEF( for_in_next, 1, 1, 3, none) DEF( for_of_next, 2, 3, 5, u8) DEF(iterator_check_object, 1, 1, 1, none) DEF(iterator_get_value_done, 1, 1, 2, none) DEF( iterator_close, 1, 3, 0, none) DEF( iterator_next, 1, 4, 4, none) DEF( iterator_call, 2, 4, 5, u8) DEF( initial_yield, 1, 0, 0, none) DEF( yield, 1, 1, 2, none) DEF( yield_star, 1, 1, 2, none) DEF(async_yield_star, 1, 1, 2, none) DEF( await, 1, 1, 1, none) /* arithmetic/logic operations */ DEF( neg, 1, 1, 1, none) DEF( plus, 1, 1, 1, none) DEF( dec, 1, 1, 1, none) DEF( inc, 1, 1, 1, none) DEF( post_dec, 1, 1, 2, none) DEF( post_inc, 1, 1, 2, none) DEF( dec_loc, 2, 0, 0, loc8) DEF( inc_loc, 2, 0, 0, loc8) DEF( add_loc, 2, 1, 0, loc8) DEF( not, 1, 1, 1, none) DEF( lnot, 1, 1, 1, none) DEF( typeof, 1, 1, 1, none) DEF( delete, 1, 2, 1, none) DEF( delete_var, 5, 0, 1, atom) /* warning: order matters (see js_parse_assign_expr) */ DEF( mul, 1, 2, 1, none) DEF( div, 1, 2, 1, none) DEF( mod, 1, 2, 1, none) DEF( add, 1, 2, 1, none) DEF( sub, 1, 2, 1, none) DEF( shl, 1, 2, 1, none) DEF( sar, 1, 2, 1, none) DEF( shr, 1, 2, 1, none) DEF( and, 1, 2, 1, none) DEF( xor, 1, 2, 1, none) DEF( or, 1, 2, 1, none) DEF( pow, 1, 2, 1, none) DEF( lt, 1, 2, 1, none) DEF( lte, 1, 2, 1, none) DEF( gt, 1, 2, 1, none) DEF( gte, 1, 2, 1, none) DEF( instanceof, 1, 2, 1, none) DEF( in, 1, 2, 1, none) DEF( eq, 1, 2, 1, none) DEF( neq, 1, 2, 1, none) DEF( strict_eq, 1, 2, 1, none) DEF( strict_neq, 1, 2, 1, none) DEF(is_undefined_or_null, 1, 1, 1, none) DEF( private_in, 1, 2, 1, none) /* must be the last non short and non temporary opcode */ DEF( nop, 1, 0, 0, none) /* temporary opcodes: never emitted in the final bytecode */ def( enter_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( leave_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( label, 5, 0, 0, label) /* emitted in phase 1, removed in phase 3 */ def(scope_get_var_undef, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_put_var, 7, 1, 0, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_delete_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_make_ref, 11, 0, 2, atom_label_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_ref, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_put_var_init, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_get_private_field, 7, 1, 1, atom_u16) /* obj -> value, emitted in phase 1, removed in phase 2 */ def(scope_get_private_field2, 7, 1, 2, atom_u16) /* obj -> obj value, emitted in phase 1, removed in phase 2 */ def(scope_put_private_field, 7, 2, 0, atom_u16) /* obj value ->, emitted in phase 1, removed in phase 2 */ def(scope_in_private_field, 7, 1, 1, atom_u16) /* obj -> res emitted in phase 1, removed in phase 2 */ def(get_field_opt_chain, 5, 1, 1, atom) /* emitted in phase 1, removed in phase 2 */ def(get_array_el_opt_chain, 1, 2, 1, none) /* emitted in phase 1, removed in phase 2 */ def( set_class_name, 5, 1, 1, u32) /* emitted in phase 1, removed in phase 2 */ def( source_loc, 9, 0, 0, u32x2) /* emitted in phase 1, removed in phase 3 */ DEF( push_minus1, 1, 0, 1, none_int) DEF( push_0, 1, 0, 1, none_int) DEF( push_1, 1, 0, 1, none_int) DEF( push_2, 1, 0, 1, none_int) DEF( push_3, 1, 0, 1, none_int) DEF( push_4, 1, 0, 1, none_int) DEF( push_5, 1, 0, 1, none_int) DEF( push_6, 1, 0, 1, none_int) DEF( push_7, 1, 0, 1, none_int) DEF( push_i8, 2, 0, 1, i8) DEF( push_i16, 3, 0, 1, i16) DEF( push_const8, 2, 0, 1, const8) DEF( fclosure8, 2, 0, 1, const8) /* must follow push_const8 */ DEF(push_empty_string, 1, 0, 1, none) DEF( get_loc8, 2, 0, 1, loc8) DEF( put_loc8, 2, 1, 0, loc8) DEF( set_loc8, 2, 1, 1, loc8) DEF( get_loc0_loc1, 1, 0, 2, none_loc) DEF( get_loc0, 1, 0, 1, none_loc) DEF( get_loc1, 1, 0, 1, none_loc) DEF( get_loc2, 1, 0, 1, none_loc) DEF( get_loc3, 1, 0, 1, none_loc) DEF( put_loc0, 1, 1, 0, none_loc) DEF( put_loc1, 1, 1, 0, none_loc) DEF( put_loc2, 1, 1, 0, none_loc) DEF( put_loc3, 1, 1, 0, none_loc) DEF( set_loc0, 1, 1, 1, none_loc) DEF( set_loc1, 1, 1, 1, none_loc) DEF( set_loc2, 1, 1, 1, none_loc) DEF( set_loc3, 1, 1, 1, none_loc) DEF( get_arg0, 1, 0, 1, none_arg) DEF( get_arg1, 1, 0, 1, none_arg) DEF( get_arg2, 1, 0, 1, none_arg) DEF( get_arg3, 1, 0, 1, none_arg) DEF( put_arg0, 1, 1, 0, none_arg) DEF( put_arg1, 1, 1, 0, none_arg) DEF( put_arg2, 1, 1, 0, none_arg) DEF( put_arg3, 1, 1, 0, none_arg) DEF( set_arg0, 1, 1, 1, none_arg) DEF( set_arg1, 1, 1, 1, none_arg) DEF( set_arg2, 1, 1, 1, none_arg) DEF( set_arg3, 1, 1, 1, none_arg) DEF( get_var_ref0, 1, 0, 1, none_var_ref) DEF( get_var_ref1, 1, 0, 1, none_var_ref) DEF( get_var_ref2, 1, 0, 1, none_var_ref) DEF( get_var_ref3, 1, 0, 1, none_var_ref) DEF( put_var_ref0, 1, 1, 0, none_var_ref) DEF( put_var_ref1, 1, 1, 0, none_var_ref) DEF( put_var_ref2, 1, 1, 0, none_var_ref) DEF( put_var_ref3, 1, 1, 0, none_var_ref) DEF( set_var_ref0, 1, 1, 1, none_var_ref) DEF( set_var_ref1, 1, 1, 1, none_var_ref) DEF( set_var_ref2, 1, 1, 1, none_var_ref) DEF( set_var_ref3, 1, 1, 1, none_var_ref) DEF( get_length, 1, 1, 1, none) DEF( if_false8, 2, 1, 0, label8) DEF( if_true8, 2, 1, 0, label8) /* must come after if_false8 */ DEF( goto8, 2, 0, 0, label8) /* must come after if_true8 */ DEF( goto16, 3, 0, 0, label16) DEF( call0, 1, 1, 1, npopx) DEF( call1, 1, 1, 1, npopx) DEF( call2, 1, 1, 1, npopx) DEF( call3, 1, 1, 1, npopx) DEF( is_undefined, 1, 1, 1, none) DEF( is_null, 1, 1, 1, none) DEF(typeof_is_undefined, 1, 1, 1, none) DEF( typeof_is_function, 1, 1, 1, none) #undef DEF #undef def #endif /* DEF */ [ OP_COUNT ... 255 ] = &&case_default }; #define SWITCH(pc) DUMP_BYTECODE_OR_DONT(pc) __extension__ ({ goto *dispatch_table[opcode = *pc++]; }); #define CASE(op) case_ ## op #define DEFAULT case_default #define BREAK SWITCH(pc) #endif if (js_poll_interrupts(caller_ctx)) return JS_EXCEPTION; if (unlikely(JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT)) { if (flags & JS_CALL_FLAG_GENERATOR) { JSAsyncFunctionState *s = JS_VALUE_GET_PTR(func_obj); /* func_obj get contains a pointer to JSFuncAsyncState */ /* the stack frame is already allocated */ sf = &s->frame; p = JS_VALUE_GET_OBJ(sf->cur_func); b = p->u.func.function_bytecode; ctx = b->realm; var_refs = p->u.func.var_refs; local_buf = arg_buf = sf->arg_buf; var_buf = sf->var_buf; stack_buf = sf->var_buf + b->var_count; sp = sf->cur_sp; sf->cur_sp = NULL; /* cur_sp is NULL if the function is running */ pc = sf->cur_pc; sf->prev_frame = rt->current_stack_frame; rt->current_stack_frame = sf; if (s->throw_flag) goto exception; else goto restart; } else { goto not_a_function; } } p = JS_VALUE_GET_OBJ(func_obj); if (unlikely(p->class_id != JS_CLASS_BYTECODE_FUNCTION)) { JSClassCall *call_func; call_func = rt->class_array[p->class_id].call; if (!call_func) { not_a_function: return JS_ThrowTypeErrorNotAFunction(caller_ctx); } return call_func(caller_ctx, func_obj, this_obj, argc, argv, flags); } b = p->u.func.function_bytecode; if (unlikely(argc < b->arg_count || (flags & JS_CALL_FLAG_COPY_ARGV))) { arg_allocated_size = b->arg_count; } else { arg_allocated_size = 0; } alloca_size = sizeof(JSValue) * (arg_allocated_size + b->var_count + b->stack_size); if (js_check_stack_overflow(rt, alloca_size)) return JS_ThrowStackOverflow(caller_ctx); sf->is_strict_mode = b->is_strict_mode; arg_buf = (JSValue *)argv; sf->arg_count = argc; sf->cur_func = unsafe_unconst(func_obj); init_list_head(&sf->var_ref_list); var_refs = p->u.func.var_refs; local_buf = alloca(alloca_size); if (unlikely(arg_allocated_size)) { int n = min_int(argc, b->arg_count); arg_buf = local_buf; for(i = 0; i < n; i++) arg_buf[i] = js_dup(argv[i]); for(; i < b->arg_count; i++) arg_buf[i] = JS_UNDEFINED; sf->arg_count = b->arg_count; } var_buf = local_buf + arg_allocated_size; sf->var_buf = var_buf; sf->arg_buf = arg_buf; for(i = 0; i < b->var_count; i++) var_buf[i] = JS_UNDEFINED; stack_buf = var_buf + b->var_count; sp = stack_buf; pc = b->byte_code_buf; /* sf->cur_pc must we set to pc before any recursive calls to JS_CallInternal. */ sf->cur_pc = NULL; sf->prev_frame = rt->current_stack_frame; rt->current_stack_frame = sf; ctx = b->realm; /* set the current realm */ #ifdef ENABLE_DUMPS // JS_DUMP_BYTECODE_STEP if (check_dump_flag(ctx->rt, JS_DUMP_BYTECODE_STEP)) print_func_name(b); #endif restart: for(;;) { int call_argc; JSValue *call_argv; SWITCH(pc) { CASE(OP_push_i32): *sp++ = js_int32(get_u32(pc)); pc += 4; BREAK; CASE(OP_push_const): *sp++ = js_dup(b->cpool[get_u32(pc)]); pc += 4; BREAK; CASE(OP_push_minus1): CASE(OP_push_0): CASE(OP_push_1): CASE(OP_push_2): CASE(OP_push_3): CASE(OP_push_4): CASE(OP_push_5): CASE(OP_push_6): CASE(OP_push_7): *sp++ = js_int32(opcode - OP_push_0); BREAK; CASE(OP_push_i8): *sp++ = js_int32(get_i8(pc)); pc += 1; BREAK; CASE(OP_push_i16): *sp++ = js_int32(get_i16(pc)); pc += 2; BREAK; CASE(OP_push_const8): *sp++ = js_dup(b->cpool[*pc++]); BREAK; CASE(OP_fclosure8): *sp++ = js_closure(ctx, js_dup(b->cpool[*pc++]), var_refs, sf); if (unlikely(JS_IsException(sp[-1]))) goto exception; BREAK; CASE(OP_push_empty_string): *sp++ = JS_AtomToString(ctx, JS_ATOM_empty_string); BREAK; CASE(OP_get_length): { JSValue val; sf->cur_pc = pc; val = JS_GetProperty(ctx, sp[-1], JS_ATOM_length); if (unlikely(JS_IsException(val))) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = val; } BREAK; CASE(OP_push_atom_value): *sp++ = JS_AtomToValue(ctx, get_u32(pc)); pc += 4; BREAK; CASE(OP_undefined): *sp++ = JS_UNDEFINED; BREAK; CASE(OP_null): *sp++ = JS_NULL; BREAK; CASE(OP_push_this): /* OP_push_this is only called at the start of a function */ { JSValue val; if (!b->is_strict_mode) { uint32_t tag = JS_VALUE_GET_TAG(this_obj); if (likely(tag == JS_TAG_OBJECT)) goto normal_this; if (tag == JS_TAG_NULL || tag == JS_TAG_UNDEFINED) { val = js_dup(ctx->global_obj); } else { val = JS_ToObject(ctx, this_obj); if (JS_IsException(val)) goto exception; } } else { normal_this: val = js_dup(this_obj); } *sp++ = val; } BREAK; CASE(OP_push_false): *sp++ = JS_FALSE; BREAK; CASE(OP_push_true): *sp++ = JS_TRUE; BREAK; CASE(OP_object): *sp++ = JS_NewObject(ctx); if (unlikely(JS_IsException(sp[-1]))) goto exception; BREAK; CASE(OP_special_object): { int arg = *pc++; switch(arg) { case OP_SPECIAL_OBJECT_ARGUMENTS: *sp++ = js_build_arguments(ctx, argc, argv); if (unlikely(JS_IsException(sp[-1]))) goto exception; break; case OP_SPECIAL_OBJECT_MAPPED_ARGUMENTS: *sp++ = js_build_mapped_arguments(ctx, argc, argv, sf, min_int(argc, b->arg_count)); if (unlikely(JS_IsException(sp[-1]))) goto exception; break; case OP_SPECIAL_OBJECT_THIS_FUNC: *sp++ = js_dup(sf->cur_func); break; case OP_SPECIAL_OBJECT_NEW_TARGET: *sp++ = js_dup(new_target); break; case OP_SPECIAL_OBJECT_HOME_OBJECT: { JSObject *p1; p1 = p->u.func.home_object; if (unlikely(!p1)) *sp++ = JS_UNDEFINED; else *sp++ = js_dup(JS_MKPTR(JS_TAG_OBJECT, p1)); } break; case OP_SPECIAL_OBJECT_VAR_OBJECT: *sp++ = JS_NewObjectProto(ctx, JS_NULL); if (unlikely(JS_IsException(sp[-1]))) goto exception; break; case OP_SPECIAL_OBJECT_IMPORT_META: *sp++ = js_import_meta(ctx); if (unlikely(JS_IsException(sp[-1]))) goto exception; break; default: abort(); } } BREAK; CASE(OP_rest): { int i, n, first = get_u16(pc); pc += 2; i = min_int(first, argc); n = argc - i; *sp++ = js_create_array(ctx, n, &argv[i]); if (unlikely(JS_IsException(sp[-1]))) goto exception; } BREAK; CASE(OP_drop): JS_FreeValue(ctx, sp[-1]); sp--; BREAK; CASE(OP_nip): JS_FreeValue(ctx, sp[-2]); sp[-2] = sp[-1]; sp--; BREAK; CASE(OP_nip1): /* a b c -> b c */ JS_FreeValue(ctx, sp[-3]); sp[-3] = sp[-2]; sp[-2] = sp[-1]; sp--; BREAK; CASE(OP_dup): sp[0] = js_dup(sp[-1]); sp++; BREAK; CASE(OP_dup2): /* a b -> a b a b */ sp[0] = js_dup(sp[-2]); sp[1] = js_dup(sp[-1]); sp += 2; BREAK; CASE(OP_dup3): /* a b c -> a b c a b c */ sp[0] = js_dup(sp[-3]); sp[1] = js_dup(sp[-2]); sp[2] = js_dup(sp[-1]); sp += 3; BREAK; CASE(OP_dup1): /* a b -> a a b */ sp[0] = sp[-1]; sp[-1] = js_dup(sp[-2]); sp++; BREAK; CASE(OP_insert2): /* obj a -> a obj a (dup_x1) */ sp[0] = sp[-1]; sp[-1] = sp[-2]; sp[-2] = js_dup(sp[0]); sp++; BREAK; CASE(OP_insert3): /* obj prop a -> a obj prop a (dup_x2) */ sp[0] = sp[-1]; sp[-1] = sp[-2]; sp[-2] = sp[-3]; sp[-3] = js_dup(sp[0]); sp++; BREAK; CASE(OP_insert4): /* this obj prop a -> a this obj prop a */ sp[0] = sp[-1]; sp[-1] = sp[-2]; sp[-2] = sp[-3]; sp[-3] = sp[-4]; sp[-4] = js_dup(sp[0]); sp++; BREAK; CASE(OP_perm3): /* obj a b -> a obj b (213) */ { JSValue tmp; tmp = sp[-2]; sp[-2] = sp[-3]; sp[-3] = tmp; } BREAK; CASE(OP_rot3l): /* x a b -> a b x (231) */ { JSValue tmp; tmp = sp[-3]; sp[-3] = sp[-2]; sp[-2] = sp[-1]; sp[-1] = tmp; } BREAK; CASE(OP_rot4l): /* x a b c -> a b c x */ { JSValue tmp; tmp = sp[-4]; sp[-4] = sp[-3]; sp[-3] = sp[-2]; sp[-2] = sp[-1]; sp[-1] = tmp; } BREAK; CASE(OP_rot5l): /* x a b c d -> a b c d x */ { JSValue tmp; tmp = sp[-5]; sp[-5] = sp[-4]; sp[-4] = sp[-3]; sp[-3] = sp[-2]; sp[-2] = sp[-1]; sp[-1] = tmp; } BREAK; CASE(OP_rot3r): /* a b x -> x a b (312) */ { JSValue tmp; tmp = sp[-1]; sp[-1] = sp[-2]; sp[-2] = sp[-3]; sp[-3] = tmp; } BREAK; CASE(OP_perm4): /* obj prop a b -> a obj prop b */ { JSValue tmp; tmp = sp[-2]; sp[-2] = sp[-3]; sp[-3] = sp[-4]; sp[-4] = tmp; } BREAK; CASE(OP_perm5): /* this obj prop a b -> a this obj prop b */ { JSValue tmp; tmp = sp[-2]; sp[-2] = sp[-3]; sp[-3] = sp[-4]; sp[-4] = sp[-5]; sp[-5] = tmp; } BREAK; CASE(OP_swap): /* a b -> b a */ { JSValue tmp; tmp = sp[-2]; sp[-2] = sp[-1]; sp[-1] = tmp; } BREAK; CASE(OP_swap2): /* a b c d -> c d a b */ { JSValue tmp1, tmp2; tmp1 = sp[-4]; tmp2 = sp[-3]; sp[-4] = sp[-2]; sp[-3] = sp[-1]; sp[-2] = tmp1; sp[-1] = tmp2; } BREAK; CASE(OP_fclosure): { JSValue bfunc = js_dup(b->cpool[get_u32(pc)]); pc += 4; *sp++ = js_closure(ctx, bfunc, var_refs, sf); if (unlikely(JS_IsException(sp[-1]))) goto exception; } BREAK; CASE(OP_call0): CASE(OP_call1): CASE(OP_call2): CASE(OP_call3): call_argc = opcode - OP_call0; goto has_call_argc; CASE(OP_call): CASE(OP_tail_call): { call_argc = get_u16(pc); pc += 2; goto has_call_argc; has_call_argc: call_argv = sp - call_argc; sf->cur_pc = pc; ret_val = JS_CallInternal(ctx, call_argv[-1], JS_UNDEFINED, JS_UNDEFINED, call_argc, vc(call_argv), 0); if (unlikely(JS_IsException(ret_val))) goto exception; if (opcode == OP_tail_call) goto done; for(i = -1; i < call_argc; i++) JS_FreeValue(ctx, call_argv[i]); sp -= call_argc + 1; *sp++ = ret_val; } BREAK; CASE(OP_call_constructor): { call_argc = get_u16(pc); pc += 2; call_argv = sp - call_argc; sf->cur_pc = pc; ret_val = JS_CallConstructorInternal(ctx, call_argv[-2], call_argv[-1], call_argc, vc(call_argv), 0); if (unlikely(JS_IsException(ret_val))) goto exception; for(i = -2; i < call_argc; i++) JS_FreeValue(ctx, call_argv[i]); sp -= call_argc + 2; *sp++ = ret_val; } BREAK; CASE(OP_call_method): CASE(OP_tail_call_method): { call_argc = get_u16(pc); pc += 2; call_argv = sp - call_argc; sf->cur_pc = pc; ret_val = JS_CallInternal(ctx, call_argv[-1], call_argv[-2], JS_UNDEFINED, call_argc, vc(call_argv), 0); if (unlikely(JS_IsException(ret_val))) goto exception; if (opcode == OP_tail_call_method) goto done; for(i = -2; i < call_argc; i++) JS_FreeValue(ctx, call_argv[i]); sp -= call_argc + 2; *sp++ = ret_val; } BREAK; CASE(OP_array_from): { call_argc = get_u16(pc); pc += 2; call_argv = sp - call_argc; ret_val = JS_NewArrayFrom(ctx, call_argc, call_argv); if (unlikely(JS_IsException(ret_val))) goto exception; sp -= call_argc; *sp++ = ret_val; } BREAK; CASE(OP_apply): { int magic; magic = get_u16(pc); pc += 2; sf->cur_pc = pc; ret_val = js_function_apply(ctx, sp[-3], 2, vc(&sp[-2]), magic); if (unlikely(JS_IsException(ret_val))) goto exception; JS_FreeValue(ctx, sp[-3]); JS_FreeValue(ctx, sp[-2]); JS_FreeValue(ctx, sp[-1]); sp -= 3; *sp++ = ret_val; } BREAK; CASE(OP_return): ret_val = *--sp; goto done; CASE(OP_return_undef): ret_val = JS_UNDEFINED; goto done; CASE(OP_check_ctor_return): /* return true if 'this' should be returned */ if (!JS_IsObject(sp[-1])) { if (!JS_IsUndefined(sp[-1])) { JS_ThrowTypeError(caller_ctx, "derived class constructor must return an object or undefined"); goto exception; } sp[0] = JS_TRUE; } else { sp[0] = JS_FALSE; } sp++; BREAK; CASE(OP_check_ctor): if (JS_IsUndefined(new_target)) { non_ctor_call: JS_ThrowTypeError(ctx, "class constructors must be invoked with 'new'"); goto exception; } BREAK; CASE(OP_init_ctor): { JSValue super, ret; sf->cur_pc = pc; if (JS_IsUndefined(new_target)) goto non_ctor_call; super = JS_GetPrototype(ctx, func_obj); if (JS_IsException(super)) goto exception; ret = JS_CallConstructor2(ctx, super, new_target, argc, argv); JS_FreeValue(ctx, super); if (JS_IsException(ret)) goto exception; *sp++ = ret; } BREAK; CASE(OP_check_brand): { int ret = JS_CheckBrand(ctx, sp[-2], sp[-1]); if (ret < 0) goto exception; if (!ret) { JS_ThrowTypeError(ctx, "invalid brand on object"); goto exception; } } BREAK; CASE(OP_add_brand): if (JS_AddBrand(ctx, sp[-2], sp[-1]) < 0) goto exception; JS_FreeValue(ctx, sp[-2]); JS_FreeValue(ctx, sp[-1]); sp -= 2; BREAK; CASE(OP_throw): JS_Throw(ctx, *--sp); goto exception; CASE(OP_throw_error): #define JS_THROW_VAR_RO 0 #define JS_THROW_VAR_REDECL 1 #define JS_THROW_VAR_UNINITIALIZED 2 #define JS_THROW_ERROR_DELETE_SUPER 3 #define JS_THROW_ERROR_ITERATOR_THROW 4 { JSAtom atom; int type; atom = get_u32(pc); type = pc[4]; pc += 5; if (type == JS_THROW_VAR_RO) JS_ThrowTypeErrorReadOnly(ctx, JS_PROP_THROW, atom); else if (type == JS_THROW_VAR_REDECL) JS_ThrowSyntaxErrorVarRedeclaration(ctx, atom); else if (type == JS_THROW_VAR_UNINITIALIZED) JS_ThrowReferenceErrorUninitialized(ctx, atom); else if (type == JS_THROW_ERROR_DELETE_SUPER) JS_ThrowReferenceError(ctx, "unsupported reference to 'super'"); else if (type == JS_THROW_ERROR_ITERATOR_THROW) JS_ThrowTypeError(ctx, "iterator does not have a throw method"); else JS_ThrowInternalError(ctx, "invalid throw var type %d", type); } goto exception; CASE(OP_eval): { JSValue obj; int scope_idx; call_argc = get_u16(pc); scope_idx = get_u16(pc + 2) - 1; pc += 4; call_argv = sp - call_argc; sf->cur_pc = pc; if (js_same_value(ctx, call_argv[-1], ctx->eval_obj)) { if (call_argc >= 1) obj = call_argv[0]; else obj = JS_UNDEFINED; ret_val = JS_EvalObject(ctx, JS_UNDEFINED, obj, JS_EVAL_TYPE_DIRECT, scope_idx); } else { ret_val = JS_CallInternal(ctx, call_argv[-1], JS_UNDEFINED, JS_UNDEFINED, call_argc, vc(call_argv), 0); } if (unlikely(JS_IsException(ret_val))) goto exception; for(i = -1; i < call_argc; i++) JS_FreeValue(ctx, call_argv[i]); sp -= call_argc + 1; *sp++ = ret_val; } BREAK; /* could merge with OP_apply */ CASE(OP_apply_eval): { int scope_idx; uint32_t len; JSValue *tab; JSValue obj; scope_idx = get_u16(pc) - 1; pc += 2; sf->cur_pc = pc; tab = build_arg_list(ctx, &len, sp[-1]); if (!tab) goto exception; if (js_same_value(ctx, sp[-2], ctx->eval_obj)) { if (len >= 1) obj = tab[0]; else obj = JS_UNDEFINED; ret_val = JS_EvalObject(ctx, JS_UNDEFINED, obj, JS_EVAL_TYPE_DIRECT, scope_idx); } else { ret_val = JS_Call(ctx, sp[-2], JS_UNDEFINED, len, vc(tab)); } free_arg_list(ctx, tab, len); if (unlikely(JS_IsException(ret_val))) goto exception; JS_FreeValue(ctx, sp[-2]); JS_FreeValue(ctx, sp[-1]); sp -= 2; *sp++ = ret_val; } BREAK; CASE(OP_regexp): { sp[-2] = js_regexp_constructor_internal(ctx, JS_UNDEFINED, sp[-2], sp[-1]); sp--; } BREAK; CASE(OP_get_super): { JSValue proto; proto = JS_GetPrototype(ctx, sp[-1]); if (JS_IsException(proto)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = proto; } BREAK; CASE(OP_import): { JSValue val; sf->cur_pc = pc; val = js_dynamic_import(ctx, sp[-1]); if (JS_IsException(val)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = val; } BREAK; CASE(OP_check_var): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; ret = JS_CheckGlobalVar(ctx, atom); if (ret < 0) goto exception; *sp++ = js_bool(ret); } BREAK; CASE(OP_get_var_undef): CASE(OP_get_var): { JSValue val; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; val = JS_GetGlobalVar(ctx, atom, opcode - OP_get_var_undef); if (unlikely(JS_IsException(val))) goto exception; *sp++ = val; } BREAK; CASE(OP_put_var): CASE(OP_put_var_init): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; ret = JS_SetGlobalVar(ctx, atom, sp[-1], opcode - OP_put_var); sp--; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_put_var_strict): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; /* sp[-2] is JS_TRUE or JS_FALSE */ if (unlikely(!JS_VALUE_GET_INT(sp[-2]))) { JS_ThrowReferenceErrorNotDefined(ctx, atom); goto exception; } ret = JS_SetGlobalVar(ctx, atom, sp[-1], 2); sp -= 2; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_check_define_var): { JSAtom atom; int flags; atom = get_u32(pc); flags = pc[4]; pc += 5; if (JS_CheckDefineGlobalVar(ctx, atom, flags)) goto exception; } BREAK; CASE(OP_define_var): { JSAtom atom; int flags; atom = get_u32(pc); flags = pc[4]; pc += 5; if (JS_DefineGlobalVar(ctx, atom, flags)) goto exception; } BREAK; CASE(OP_define_func): { JSAtom atom; int flags; atom = get_u32(pc); flags = pc[4]; pc += 5; if (JS_DefineGlobalFunction(ctx, atom, sp[-1], flags)) goto exception; JS_FreeValue(ctx, sp[-1]); sp--; } BREAK; CASE(OP_get_loc): { int idx; idx = get_u16(pc); pc += 2; sp[0] = js_dup(var_buf[idx]); sp++; } BREAK; CASE(OP_put_loc): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, &var_buf[idx], sp[-1]); sp--; } BREAK; CASE(OP_set_loc): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, &var_buf[idx], js_dup(sp[-1])); } BREAK; CASE(OP_get_arg): { int idx; idx = get_u16(pc); pc += 2; sp[0] = js_dup(arg_buf[idx]); sp++; } BREAK; CASE(OP_put_arg): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, &arg_buf[idx], sp[-1]); sp--; } BREAK; CASE(OP_set_arg): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, &arg_buf[idx], js_dup(sp[-1])); } BREAK; CASE(OP_get_loc8): *sp++ = js_dup(var_buf[*pc++]); BREAK; CASE(OP_put_loc8): set_value(ctx, &var_buf[*pc++], *--sp); BREAK; CASE(OP_set_loc8): set_value(ctx, &var_buf[*pc++], js_dup(sp[-1])); BREAK; // Observation: get_loc0 and get_loc1 are individually very // frequent opcodes _and_ they are very often paired together, // making them ideal candidates for opcode fusion. CASE(OP_get_loc0_loc1): *sp++ = js_dup(var_buf[0]); *sp++ = js_dup(var_buf[1]); BREAK; CASE(OP_get_loc0): *sp++ = js_dup(var_buf[0]); BREAK; CASE(OP_get_loc1): *sp++ = js_dup(var_buf[1]); BREAK; CASE(OP_get_loc2): *sp++ = js_dup(var_buf[2]); BREAK; CASE(OP_get_loc3): *sp++ = js_dup(var_buf[3]); BREAK; CASE(OP_put_loc0): set_value(ctx, &var_buf[0], *--sp); BREAK; CASE(OP_put_loc1): set_value(ctx, &var_buf[1], *--sp); BREAK; CASE(OP_put_loc2): set_value(ctx, &var_buf[2], *--sp); BREAK; CASE(OP_put_loc3): set_value(ctx, &var_buf[3], *--sp); BREAK; CASE(OP_set_loc0): set_value(ctx, &var_buf[0], js_dup(sp[-1])); BREAK; CASE(OP_set_loc1): set_value(ctx, &var_buf[1], js_dup(sp[-1])); BREAK; CASE(OP_set_loc2): set_value(ctx, &var_buf[2], js_dup(sp[-1])); BREAK; CASE(OP_set_loc3): set_value(ctx, &var_buf[3], js_dup(sp[-1])); BREAK; CASE(OP_get_arg0): *sp++ = js_dup(arg_buf[0]); BREAK; CASE(OP_get_arg1): *sp++ = js_dup(arg_buf[1]); BREAK; CASE(OP_get_arg2): *sp++ = js_dup(arg_buf[2]); BREAK; CASE(OP_get_arg3): *sp++ = js_dup(arg_buf[3]); BREAK; CASE(OP_put_arg0): set_value(ctx, &arg_buf[0], *--sp); BREAK; CASE(OP_put_arg1): set_value(ctx, &arg_buf[1], *--sp); BREAK; CASE(OP_put_arg2): set_value(ctx, &arg_buf[2], *--sp); BREAK; CASE(OP_put_arg3): set_value(ctx, &arg_buf[3], *--sp); BREAK; CASE(OP_set_arg0): set_value(ctx, &arg_buf[0], js_dup(sp[-1])); BREAK; CASE(OP_set_arg1): set_value(ctx, &arg_buf[1], js_dup(sp[-1])); BREAK; CASE(OP_set_arg2): set_value(ctx, &arg_buf[2], js_dup(sp[-1])); BREAK; CASE(OP_set_arg3): set_value(ctx, &arg_buf[3], js_dup(sp[-1])); BREAK; CASE(OP_get_var_ref0): *sp++ = js_dup(*var_refs[0]->pvalue); BREAK; CASE(OP_get_var_ref1): *sp++ = js_dup(*var_refs[1]->pvalue); BREAK; CASE(OP_get_var_ref2): *sp++ = js_dup(*var_refs[2]->pvalue); BREAK; CASE(OP_get_var_ref3): *sp++ = js_dup(*var_refs[3]->pvalue); BREAK; CASE(OP_put_var_ref0): set_value(ctx, var_refs[0]->pvalue, *--sp); BREAK; CASE(OP_put_var_ref1): set_value(ctx, var_refs[1]->pvalue, *--sp); BREAK; CASE(OP_put_var_ref2): set_value(ctx, var_refs[2]->pvalue, *--sp); BREAK; CASE(OP_put_var_ref3): set_value(ctx, var_refs[3]->pvalue, *--sp); BREAK; CASE(OP_set_var_ref0): set_value(ctx, var_refs[0]->pvalue, js_dup(sp[-1])); BREAK; CASE(OP_set_var_ref1): set_value(ctx, var_refs[1]->pvalue, js_dup(sp[-1])); BREAK; CASE(OP_set_var_ref2): set_value(ctx, var_refs[2]->pvalue, js_dup(sp[-1])); BREAK; CASE(OP_set_var_ref3): set_value(ctx, var_refs[3]->pvalue, js_dup(sp[-1])); BREAK; CASE(OP_get_var_ref): { int idx; JSValue val; idx = get_u16(pc); pc += 2; val = *var_refs[idx]->pvalue; sp[0] = js_dup(val); sp++; } BREAK; CASE(OP_put_var_ref): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, var_refs[idx]->pvalue, sp[-1]); sp--; } BREAK; CASE(OP_set_var_ref): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, var_refs[idx]->pvalue, js_dup(sp[-1])); } BREAK; CASE(OP_get_var_ref_check): { int idx; JSValue val; idx = get_u16(pc); pc += 2; val = *var_refs[idx]->pvalue; if (unlikely(JS_IsUninitialized(val))) { JS_ThrowReferenceErrorUninitialized2(ctx, b, idx, true); goto exception; } sp[0] = js_dup(val); sp++; } BREAK; CASE(OP_put_var_ref_check): { int idx; idx = get_u16(pc); pc += 2; if (unlikely(JS_IsUninitialized(*var_refs[idx]->pvalue))) { JS_ThrowReferenceErrorUninitialized2(ctx, b, idx, true); goto exception; } set_value(ctx, var_refs[idx]->pvalue, sp[-1]); sp--; } BREAK; CASE(OP_put_var_ref_check_init): { int idx; idx = get_u16(pc); pc += 2; if (unlikely(!JS_IsUninitialized(*var_refs[idx]->pvalue))) { JS_ThrowReferenceErrorUninitialized2(ctx, b, idx, true); goto exception; } set_value(ctx, var_refs[idx]->pvalue, sp[-1]); sp--; } BREAK; CASE(OP_set_loc_uninitialized): { int idx; idx = get_u16(pc); pc += 2; set_value(ctx, &var_buf[idx], JS_UNINITIALIZED); } BREAK; CASE(OP_get_loc_check): { int idx; idx = get_u16(pc); pc += 2; if (unlikely(JS_IsUninitialized(var_buf[idx]))) { JS_ThrowReferenceErrorUninitialized2(caller_ctx, b, idx, false); goto exception; } sp[0] = js_dup(var_buf[idx]); sp++; } BREAK; CASE(OP_put_loc_check): { int idx; idx = get_u16(pc); pc += 2; if (unlikely(JS_IsUninitialized(var_buf[idx]))) { JS_ThrowReferenceErrorUninitialized2(caller_ctx, b, idx, false); goto exception; } set_value(ctx, &var_buf[idx], sp[-1]); sp--; } BREAK; CASE(OP_put_loc_check_init): { int idx; idx = get_u16(pc); pc += 2; if (unlikely(!JS_IsUninitialized(var_buf[idx]))) { JS_ThrowReferenceError(caller_ctx, "'this' can be initialized only once"); goto exception; } set_value(ctx, &var_buf[idx], sp[-1]); sp--; } BREAK; CASE(OP_close_loc): { int idx; idx = get_u16(pc); pc += 2; close_lexical_var(ctx, sf, idx); } BREAK; CASE(OP_make_loc_ref): CASE(OP_make_arg_ref): CASE(OP_make_var_ref_ref): { JSVarRef *var_ref; JSProperty *pr; JSAtom atom; int idx; atom = get_u32(pc); idx = get_u16(pc + 4); pc += 6; *sp++ = JS_NewObjectProto(ctx, JS_NULL); if (unlikely(JS_IsException(sp[-1]))) goto exception; if (opcode == OP_make_var_ref_ref) { var_ref = var_refs[idx]; var_ref->header.ref_count++; } else { var_ref = get_var_ref(ctx, sf, idx, opcode == OP_make_arg_ref); if (!var_ref) goto exception; } pr = add_property(ctx, JS_VALUE_GET_OBJ(sp[-1]), atom, JS_PROP_WRITABLE | JS_PROP_VARREF); if (!pr) { free_var_ref(rt, var_ref); goto exception; } pr->u.var_ref = var_ref; *sp++ = JS_AtomToValue(ctx, atom); } BREAK; CASE(OP_make_var_ref): { JSAtom atom; atom = get_u32(pc); pc += 4; if (JS_GetGlobalVarRef(ctx, atom, sp)) goto exception; sp += 2; } BREAK; CASE(OP_goto): pc += (int32_t)get_u32(pc); if (unlikely(js_poll_interrupts(ctx))) goto exception; BREAK; CASE(OP_goto16): pc += (int16_t)get_u16(pc); if (unlikely(js_poll_interrupts(ctx))) goto exception; BREAK; CASE(OP_goto8): pc += (int8_t)pc[0]; if (unlikely(js_poll_interrupts(ctx))) goto exception; BREAK; CASE(OP_if_true): { int res; JSValue op1; op1 = sp[-1]; pc += 4; if ((uint32_t)JS_VALUE_GET_TAG(op1) <= JS_TAG_UNDEFINED) { res = JS_VALUE_GET_INT(op1); } else { res = JS_ToBoolFree(ctx, op1); } sp--; if (res) { pc += (int32_t)get_u32(pc - 4) - 4; } if (unlikely(js_poll_interrupts(ctx))) goto exception; } BREAK; CASE(OP_if_false): { int res; JSValue op1; op1 = sp[-1]; pc += 4; if ((uint32_t)JS_VALUE_GET_TAG(op1) <= JS_TAG_UNDEFINED) { res = JS_VALUE_GET_INT(op1); } else { res = JS_ToBoolFree(ctx, op1); } sp--; if (!res) { pc += (int32_t)get_u32(pc - 4) - 4; } if (unlikely(js_poll_interrupts(ctx))) goto exception; } BREAK; CASE(OP_if_true8): { int res; JSValue op1; op1 = sp[-1]; pc += 1; if ((uint32_t)JS_VALUE_GET_TAG(op1) <= JS_TAG_UNDEFINED) { res = JS_VALUE_GET_INT(op1); } else { res = JS_ToBoolFree(ctx, op1); } sp--; if (res) { pc += (int8_t)pc[-1] - 1; } if (unlikely(js_poll_interrupts(ctx))) goto exception; } BREAK; CASE(OP_if_false8): { int res; JSValue op1; op1 = sp[-1]; pc += 1; if ((uint32_t)JS_VALUE_GET_TAG(op1) <= JS_TAG_UNDEFINED) { res = JS_VALUE_GET_INT(op1); } else { res = JS_ToBoolFree(ctx, op1); } sp--; if (!res) { pc += (int8_t)pc[-1] - 1; } if (unlikely(js_poll_interrupts(ctx))) goto exception; } BREAK; CASE(OP_catch): { int32_t diff; diff = get_u32(pc); sp[0] = JS_NewCatchOffset(ctx, pc + diff - b->byte_code_buf); sp++; pc += 4; } BREAK; CASE(OP_gosub): { int32_t diff; diff = get_u32(pc); /* XXX: should have a different tag to avoid security flaw */ sp[0] = js_int32(pc + 4 - b->byte_code_buf); sp++; pc += diff; } BREAK; CASE(OP_ret): { JSValue op1; uint32_t pos; op1 = sp[-1]; if (unlikely(JS_VALUE_GET_TAG(op1) != JS_TAG_INT)) goto ret_fail; pos = JS_VALUE_GET_INT(op1); if (unlikely(pos >= b->byte_code_len)) { ret_fail: JS_ThrowInternalError(ctx, "invalid ret value"); goto exception; } sp--; pc = b->byte_code_buf + pos; } BREAK; CASE(OP_for_in_start): sf->cur_pc = pc; if (js_for_in_start(ctx, sp)) goto exception; BREAK; CASE(OP_for_in_next): sf->cur_pc = pc; if (js_for_in_next(ctx, sp)) goto exception; sp += 2; BREAK; CASE(OP_for_of_start): sf->cur_pc = pc; if (js_for_of_start(ctx, sp, false)) goto exception; sp += 1; *sp++ = JS_NewCatchOffset(ctx, 0); BREAK; CASE(OP_for_of_next): { int offset = -3 - pc[0]; pc += 1; sf->cur_pc = pc; if (js_for_of_next(ctx, sp, offset)) goto exception; sp += 2; } BREAK; CASE(OP_for_await_of_start): sf->cur_pc = pc; if (js_for_of_start(ctx, sp, true)) goto exception; sp += 1; *sp++ = JS_NewCatchOffset(ctx, 0); BREAK; CASE(OP_iterator_get_value_done): sf->cur_pc = pc; if (js_iterator_get_value_done(ctx, sp)) goto exception; sp += 1; BREAK; CASE(OP_iterator_check_object): if (unlikely(!JS_IsObject(sp[-1]))) { JS_ThrowTypeError(ctx, "iterator must return an object"); goto exception; } BREAK; CASE(OP_iterator_close): /* iter_obj next catch_offset -> */ sp--; /* drop the catch offset to avoid getting caught by exception */ JS_FreeValue(ctx, sp[-1]); /* drop the next method */ sp--; if (!JS_IsUndefined(sp[-1])) { sf->cur_pc = pc; if (JS_IteratorClose(ctx, sp[-1], false)) goto exception; JS_FreeValue(ctx, sp[-1]); } sp--; BREAK; CASE(OP_nip_catch): { JSValue ret_val; /* catch_offset ... ret_val -> ret_eval */ ret_val = *--sp; while (sp > stack_buf && JS_VALUE_GET_TAG(sp[-1]) != JS_TAG_CATCH_OFFSET) { JS_FreeValue(ctx, *--sp); } if (unlikely(sp == stack_buf)) { JS_ThrowInternalError(ctx, "nip_catch"); JS_FreeValue(ctx, ret_val); goto exception; } sp[-1] = ret_val; } BREAK; CASE(OP_iterator_next): /* stack: iter_obj next catch_offset val */ { JSValue ret; sf->cur_pc = pc; ret = JS_Call(ctx, sp[-3], sp[-4], 1, vc(sp - 1)); if (JS_IsException(ret)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = ret; } BREAK; CASE(OP_iterator_call): /* stack: iter_obj next catch_offset val */ { JSValue method, ret; bool ret_flag; int flags; flags = *pc++; sf->cur_pc = pc; method = JS_GetProperty(ctx, sp[-4], (flags & 1) ? JS_ATOM_throw : JS_ATOM_return); if (JS_IsException(method)) goto exception; if (JS_IsUndefined(method) || JS_IsNull(method)) { ret_flag = true; } else { if (flags & 2) { /* no argument */ ret = JS_CallFree(ctx, method, sp[-4], 0, NULL); } else { ret = JS_CallFree(ctx, method, sp[-4], 1, vc(sp - 1)); } if (JS_IsException(ret)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = ret; ret_flag = false; } sp[0] = js_bool(ret_flag); sp += 1; } BREAK; CASE(OP_lnot): { int res; JSValue op1; op1 = sp[-1]; if ((uint32_t)JS_VALUE_GET_TAG(op1) <= JS_TAG_UNDEFINED) { res = JS_VALUE_GET_INT(op1) != 0; } else { res = JS_ToBoolFree(ctx, op1); } sp[-1] = js_bool(!res); } BREAK; CASE(OP_get_field): { JSValue val; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; val = JS_GetPropertyInternal(ctx, sp[-1], atom, sp[-1], false); if (unlikely(JS_IsException(val))) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = val; } BREAK; CASE(OP_get_field2): { JSValue val; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; val = JS_GetPropertyInternal(ctx, sp[-1], atom, sp[-1], false); if (unlikely(JS_IsException(val))) goto exception; *sp++ = val; } BREAK; CASE(OP_put_field): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; ret = JS_SetPropertyInternal2(ctx, sp[-2], atom, sp[-1], sp[-2], JS_PROP_THROW_STRICT); JS_FreeValue(ctx, sp[-2]); sp -= 2; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_private_symbol): { JSAtom atom; JSValue val; atom = get_u32(pc); pc += 4; val = JS_NewSymbolFromAtom(ctx, atom, JS_ATOM_TYPE_PRIVATE); if (JS_IsException(val)) goto exception; *sp++ = val; } BREAK; CASE(OP_get_private_field): { JSValue val; sf->cur_pc = pc; val = JS_GetPrivateField(ctx, sp[-2], sp[-1]); JS_FreeValue(ctx, sp[-1]); JS_FreeValue(ctx, sp[-2]); sp[-2] = val; sp--; if (unlikely(JS_IsException(val))) goto exception; } BREAK; CASE(OP_put_private_field): { int ret; sf->cur_pc = pc; ret = JS_SetPrivateField(ctx, sp[-3], sp[-1], sp[-2]); JS_FreeValue(ctx, sp[-3]); JS_FreeValue(ctx, sp[-1]); sp -= 3; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_define_private_field): { int ret; ret = JS_DefinePrivateField(ctx, sp[-3], sp[-2], sp[-1]); JS_FreeValue(ctx, sp[-2]); sp -= 2; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_define_field): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; ret = JS_DefinePropertyValue(ctx, sp[-2], atom, sp[-1], JS_PROP_C_W_E | JS_PROP_THROW); sp--; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_set_name): { int ret; JSAtom atom; atom = get_u32(pc); pc += 4; ret = JS_DefineObjectName(ctx, sp[-1], atom, JS_PROP_CONFIGURABLE); if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_set_name_computed): { int ret; ret = JS_DefineObjectNameComputed(ctx, sp[-1], sp[-2], JS_PROP_CONFIGURABLE); if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_set_proto): { JSValue proto; proto = sp[-1]; if (JS_IsObject(proto) || JS_IsNull(proto)) { if (JS_SetPrototypeInternal(ctx, sp[-2], proto, true) < 0) goto exception; } JS_FreeValue(ctx, proto); sp--; } BREAK; CASE(OP_set_home_object): js_method_set_home_object(ctx, sp[-1], sp[-2]); BREAK; CASE(OP_define_method): CASE(OP_define_method_computed): { JSValue getter, setter, value; JSValue obj; JSAtom atom; int flags, ret, op_flags; bool is_computed; #define OP_DEFINE_METHOD_METHOD 0 #define OP_DEFINE_METHOD_GETTER 1 #define OP_DEFINE_METHOD_SETTER 2 #define OP_DEFINE_METHOD_ENUMERABLE 4 is_computed = (opcode == OP_define_method_computed); if (is_computed) { atom = JS_ValueToAtom(ctx, sp[-2]); if (unlikely(atom == JS_ATOM_NULL)) goto exception; opcode += OP_define_method - OP_define_method_computed; } else { atom = get_u32(pc); pc += 4; } op_flags = *pc++; obj = sp[-2 - is_computed]; flags = JS_PROP_HAS_CONFIGURABLE | JS_PROP_CONFIGURABLE | JS_PROP_HAS_ENUMERABLE | JS_PROP_THROW; if (op_flags & OP_DEFINE_METHOD_ENUMERABLE) flags |= JS_PROP_ENUMERABLE; op_flags &= 3; value = JS_UNDEFINED; getter = JS_UNDEFINED; setter = JS_UNDEFINED; if (op_flags == OP_DEFINE_METHOD_METHOD) { value = sp[-1]; flags |= JS_PROP_HAS_VALUE | JS_PROP_HAS_WRITABLE | JS_PROP_WRITABLE; } else if (op_flags == OP_DEFINE_METHOD_GETTER) { getter = sp[-1]; flags |= JS_PROP_HAS_GET; } else { setter = sp[-1]; flags |= JS_PROP_HAS_SET; } ret = js_method_set_properties(ctx, sp[-1], atom, flags, obj); if (ret >= 0) { ret = JS_DefineProperty(ctx, obj, atom, value, getter, setter, flags); } JS_FreeValue(ctx, sp[-1]); if (is_computed) { JS_FreeAtom(ctx, atom); JS_FreeValue(ctx, sp[-2]); } sp -= 1 + is_computed; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_define_class): CASE(OP_define_class_computed): { int class_flags; JSAtom atom; atom = get_u32(pc); class_flags = pc[4]; pc += 5; if (js_op_define_class(ctx, sp, atom, class_flags, var_refs, sf, (opcode == OP_define_class_computed)) < 0) goto exception; } BREAK; CASE(OP_get_array_el): { JSValue val; sf->cur_pc = pc; val = JS_GetPropertyValue(ctx, sp[-2], sp[-1]); JS_FreeValue(ctx, sp[-2]); sp[-2] = val; sp--; if (unlikely(JS_IsException(val))) goto exception; } BREAK; CASE(OP_get_array_el2): { JSValue val; sf->cur_pc = pc; val = JS_GetPropertyValue(ctx, sp[-2], sp[-1]); sp[-1] = val; if (unlikely(JS_IsException(val))) goto exception; } BREAK; CASE(OP_get_ref_value): { JSValue val; sf->cur_pc = pc; if (unlikely(JS_IsUndefined(sp[-2]))) { JSAtom atom = JS_ValueToAtom(ctx, sp[-1]); if (atom != JS_ATOM_NULL) { JS_ThrowReferenceErrorNotDefined(ctx, atom); JS_FreeAtom(ctx, atom); } goto exception; } val = JS_GetPropertyValue(ctx, sp[-2], js_dup(sp[-1])); if (unlikely(JS_IsException(val))) goto exception; sp[0] = val; sp++; } BREAK; CASE(OP_get_super_value): { JSValue val; JSAtom atom; sf->cur_pc = pc; atom = JS_ValueToAtom(ctx, sp[-1]); if (unlikely(atom == JS_ATOM_NULL)) goto exception; val = JS_GetPropertyInternal(ctx, sp[-2], atom, sp[-3], false); JS_FreeAtom(ctx, atom); if (unlikely(JS_IsException(val))) goto exception; JS_FreeValue(ctx, sp[-1]); JS_FreeValue(ctx, sp[-2]); JS_FreeValue(ctx, sp[-3]); sp[-3] = val; sp -= 2; } BREAK; CASE(OP_put_array_el): { int ret; sf->cur_pc = pc; ret = JS_SetPropertyValue(ctx, sp[-3], sp[-2], sp[-1], JS_PROP_THROW_STRICT); JS_FreeValue(ctx, sp[-3]); sp -= 3; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_put_ref_value): { int ret, flags; sf->cur_pc = pc; flags = JS_PROP_THROW_STRICT; if (unlikely(JS_IsUndefined(sp[-3]))) { if (is_strict_mode(ctx)) { JSAtom atom = JS_ValueToAtom(ctx, sp[-2]); if (atom != JS_ATOM_NULL) { JS_ThrowReferenceErrorNotDefined(ctx, atom); JS_FreeAtom(ctx, atom); } goto exception; } else { sp[-3] = js_dup(ctx->global_obj); } } else { if (is_strict_mode(ctx)) flags |= JS_PROP_NO_ADD; } ret = JS_SetPropertyValue(ctx, sp[-3], sp[-2], sp[-1], flags); JS_FreeValue(ctx, sp[-3]); sp -= 3; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_put_super_value): { int ret; JSAtom atom; sf->cur_pc = pc; if (JS_VALUE_GET_TAG(sp[-3]) != JS_TAG_OBJECT) { JS_ThrowTypeErrorNotAnObject(ctx); goto exception; } atom = JS_ValueToAtom(ctx, sp[-2]); if (unlikely(atom == JS_ATOM_NULL)) goto exception; ret = JS_SetPropertyInternal2(ctx, sp[-3], atom, sp[-1], sp[-4], JS_PROP_THROW_STRICT); JS_FreeAtom(ctx, atom); JS_FreeValue(ctx, sp[-4]); JS_FreeValue(ctx, sp[-3]); JS_FreeValue(ctx, sp[-2]); sp -= 4; if (ret < 0) goto exception; } BREAK; CASE(OP_define_array_el): { int ret; ret = JS_DefinePropertyValueValue(ctx, sp[-3], js_dup(sp[-2]), sp[-1], JS_PROP_C_W_E | JS_PROP_THROW); sp -= 1; if (unlikely(ret < 0)) goto exception; } BREAK; CASE(OP_append): /* array pos enumobj -- array pos */ { sf->cur_pc = pc; if (js_append_enumerate(ctx, sp)) goto exception; JS_FreeValue(ctx, *--sp); } BREAK; CASE(OP_copy_data_properties): /* target source excludeList */ { /* stack offsets (-1 based): 2 bits for target, 3 bits for source, 2 bits for exclusionList */ int mask; mask = *pc++; sf->cur_pc = pc; if (JS_CopyDataProperties(ctx, sp[-1 - (mask & 3)], sp[-1 - ((mask >> 2) & 7)], sp[-1 - ((mask >> 5) & 7)], 0)) goto exception; } BREAK; CASE(OP_add): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { int64_t r; r = (int64_t)JS_VALUE_GET_INT(op1) + JS_VALUE_GET_INT(op2); if (unlikely((int)r != r)) goto add_slow; sp[-2] = js_int32(r); sp--; } else if (JS_VALUE_IS_BOTH_FLOAT(op1, op2)) { sp[-2] = js_float64(JS_VALUE_GET_FLOAT64(op1) + JS_VALUE_GET_FLOAT64(op2)); sp--; } else { add_slow: sf->cur_pc = pc; if (js_add_slow(ctx, sp)) goto exception; sp--; } } BREAK; CASE(OP_add_loc): { JSValue *pv; int idx; idx = *pc; pc += 1; pv = &var_buf[idx]; if (likely(JS_VALUE_IS_BOTH_INT(*pv, sp[-1]))) { int64_t r; r = (int64_t)JS_VALUE_GET_INT(*pv) + JS_VALUE_GET_INT(sp[-1]); if (unlikely((int)r != r)) goto add_loc_slow; *pv = js_int32(r); sp--; } else if (JS_VALUE_GET_TAG(*pv) == JS_TAG_STRING) { JSValue op1; op1 = sp[-1]; sp--; sf->cur_pc = pc; op1 = JS_ToPrimitiveFree(ctx, op1, HINT_NONE); if (JS_IsException(op1)) goto exception; op1 = JS_ConcatString(ctx, js_dup(*pv), op1); if (JS_IsException(op1)) goto exception; set_value(ctx, pv, op1); } else { JSValue ops[2]; add_loc_slow: /* In case of exception, js_add_slow frees ops[0] and ops[1], so we must duplicate *pv */ sf->cur_pc = pc; ops[0] = js_dup(*pv); ops[1] = sp[-1]; sp--; if (js_add_slow(ctx, ops + 2)) goto exception; set_value(ctx, pv, ops[0]); } } BREAK; CASE(OP_sub): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { int64_t r; r = (int64_t)JS_VALUE_GET_INT(op1) - JS_VALUE_GET_INT(op2); if (unlikely((int)r != r)) goto binary_arith_slow; sp[-2] = js_int32(r); sp--; } else if (JS_VALUE_IS_BOTH_FLOAT(op1, op2)) { sp[-2] = js_float64(JS_VALUE_GET_FLOAT64(op1) - JS_VALUE_GET_FLOAT64(op2)); sp--; } else { goto binary_arith_slow; } } BREAK; CASE(OP_mul): { JSValue op1, op2; double d; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { int32_t v1, v2; int64_t r; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2); r = (int64_t)v1 * v2; if (unlikely((int)r != r)) { d = (double)r; goto mul_fp_res; } /* need to test zero case for -0 result */ if (unlikely(r == 0 && (v1 | v2) < 0)) { d = -0.0; goto mul_fp_res; } sp[-2] = js_int32(r); sp--; } else if (JS_VALUE_IS_BOTH_FLOAT(op1, op2)) { d = JS_VALUE_GET_FLOAT64(op1) * JS_VALUE_GET_FLOAT64(op2); mul_fp_res: sp[-2] = js_float64(d); sp--; } else { goto binary_arith_slow; } } BREAK; CASE(OP_div): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { int v1, v2; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2); sp[-2] = js_number((double)v1 / (double)v2); sp--; } else { goto binary_arith_slow; } } BREAK; CASE(OP_mod): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { int v1, v2, r; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2); /* We must avoid v2 = 0, v1 = INT32_MIN and v2 = -1 and the cases where the result is -0. */ if (unlikely(v1 < 0 || v2 <= 0)) goto binary_arith_slow; r = v1 % v2; sp[-2] = js_int32(r); sp--; } else { goto binary_arith_slow; } } BREAK; CASE(OP_pow): binary_arith_slow: sf->cur_pc = pc; if (js_binary_arith_slow(ctx, sp, opcode)) goto exception; sp--; BREAK; CASE(OP_plus): { JSValue op1; uint32_t tag; op1 = sp[-1]; tag = JS_VALUE_GET_TAG(op1); if (tag == JS_TAG_INT || JS_TAG_IS_FLOAT64(tag)) { } else { sf->cur_pc = pc; if (js_unary_arith_slow(ctx, sp, opcode)) goto exception; } } BREAK; CASE(OP_neg): { JSValue op1; uint32_t tag; int val; double d; op1 = sp[-1]; tag = JS_VALUE_GET_TAG(op1); if (tag == JS_TAG_INT) { val = JS_VALUE_GET_INT(op1); /* Note: -0 cannot be expressed as integer */ if (unlikely(val == 0)) { d = -0.0; goto neg_fp_res; } if (unlikely(val == INT32_MIN)) { d = -(double)val; goto neg_fp_res; } sp[-1] = js_int32(-val); } else if (JS_TAG_IS_FLOAT64(tag)) { d = -JS_VALUE_GET_FLOAT64(op1); neg_fp_res: sp[-1] = js_float64(d); } else { sf->cur_pc = pc; if (js_unary_arith_slow(ctx, sp, opcode)) goto exception; } } BREAK; CASE(OP_inc): { JSValue op1; int val; op1 = sp[-1]; if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) { val = JS_VALUE_GET_INT(op1); if (unlikely(val == INT32_MAX)) goto inc_slow; sp[-1] = js_int32(val + 1); } else { inc_slow: sf->cur_pc = pc; if (js_unary_arith_slow(ctx, sp, opcode)) goto exception; } } BREAK; CASE(OP_dec): { JSValue op1; int val; op1 = sp[-1]; if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) { val = JS_VALUE_GET_INT(op1); if (unlikely(val == INT32_MIN)) goto dec_slow; sp[-1] = js_int32(val - 1); } else { dec_slow: sf->cur_pc = pc; if (js_unary_arith_slow(ctx, sp, opcode)) goto exception; } } BREAK; CASE(OP_post_inc): CASE(OP_post_dec): sf->cur_pc = pc; if (js_post_inc_slow(ctx, sp, opcode)) goto exception; sp++; BREAK; CASE(OP_inc_loc): { JSValue op1; int val; int idx; idx = *pc; pc += 1; op1 = var_buf[idx]; if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) { val = JS_VALUE_GET_INT(op1); if (unlikely(val == INT32_MAX)) goto inc_loc_slow; var_buf[idx] = js_int32(val + 1); } else { inc_loc_slow: sf->cur_pc = pc; /* must duplicate otherwise the variable value may be destroyed before JS code accesses it */ op1 = js_dup(op1); if (js_unary_arith_slow(ctx, &op1 + 1, OP_inc)) goto exception; set_value(ctx, &var_buf[idx], op1); } } BREAK; CASE(OP_dec_loc): { JSValue op1; int val; int idx; idx = *pc; pc += 1; op1 = var_buf[idx]; if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) { val = JS_VALUE_GET_INT(op1); if (unlikely(val == INT32_MIN)) goto dec_loc_slow; var_buf[idx] = js_int32(val - 1); } else { dec_loc_slow: sf->cur_pc = pc; /* must duplicate otherwise the variable value may be destroyed before JS code accesses it */ op1 = js_dup(op1); if (js_unary_arith_slow(ctx, &op1 + 1, OP_dec)) goto exception; set_value(ctx, &var_buf[idx], op1); } } BREAK; CASE(OP_not): { JSValue op1; op1 = sp[-1]; if (JS_VALUE_GET_TAG(op1) == JS_TAG_INT) { sp[-1] = js_int32(~JS_VALUE_GET_INT(op1)); } else { sf->cur_pc = pc; if (js_not_slow(ctx, sp)) goto exception; } } BREAK; CASE(OP_shl): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { uint32_t v1, v2; v1 = JS_VALUE_GET_INT(op1); v2 = JS_VALUE_GET_INT(op2) & 0x1f; sp[-2] = js_int32(v1 << v2); sp--; } else { sf->cur_pc = pc; if (js_binary_logic_slow(ctx, sp, opcode)) goto exception; sp--; } } BREAK; CASE(OP_shr): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { uint32_t v2; v2 = JS_VALUE_GET_INT(op2); v2 &= 0x1f; sp[-2] = js_uint32((uint32_t)JS_VALUE_GET_INT(op1) >> v2); sp--; } else { sf->cur_pc = pc; if (js_shr_slow(ctx, sp)) goto exception; sp--; } } BREAK; CASE(OP_sar): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { uint32_t v2; v2 = JS_VALUE_GET_INT(op2); if (unlikely(v2 > 0x1f)) { v2 &= 0x1f; } sp[-2] = js_int32((int)JS_VALUE_GET_INT(op1) >> v2); sp--; } else { sf->cur_pc = pc; if (js_binary_logic_slow(ctx, sp, opcode)) goto exception; sp--; } } BREAK; CASE(OP_and): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { sp[-2] = js_int32(JS_VALUE_GET_INT(op1) & JS_VALUE_GET_INT(op2)); sp--; } else { sf->cur_pc = pc; if (js_binary_logic_slow(ctx, sp, opcode)) goto exception; sp--; } } BREAK; CASE(OP_or): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { sp[-2] = js_int32(JS_VALUE_GET_INT(op1) | JS_VALUE_GET_INT(op2)); sp--; } else { sf->cur_pc = pc; if (js_binary_logic_slow(ctx, sp, opcode)) goto exception; sp--; } } BREAK; CASE(OP_xor): { JSValue op1, op2; op1 = sp[-2]; op2 = sp[-1]; if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { sp[-2] = js_int32(JS_VALUE_GET_INT(op1) ^ JS_VALUE_GET_INT(op2)); sp--; } else { sf->cur_pc = pc; if (js_binary_logic_slow(ctx, sp, opcode)) goto exception; sp--; } } BREAK; #define OP_CMP(opcode, binary_op, slow_call) \ CASE(opcode): \ { \ JSValue op1, op2; \ op1 = sp[-2]; \ op2 = sp[-1]; \ if (likely(JS_VALUE_IS_BOTH_INT(op1, op2))) { \ sp[-2] = js_bool(JS_VALUE_GET_INT(op1) binary_op JS_VALUE_GET_INT(op2)); \ sp--; \ } else { \ sf->cur_pc = pc; \ if (slow_call) \ goto exception; \ sp--; \ } \ } \ BREAK OP_CMP(OP_lt, <, js_relational_slow(ctx, sp, opcode)); OP_CMP(OP_lte, <=, js_relational_slow(ctx, sp, opcode)); OP_CMP(OP_gt, >, js_relational_slow(ctx, sp, opcode)); OP_CMP(OP_gte, >=, js_relational_slow(ctx, sp, opcode)); OP_CMP(OP_eq, ==, js_eq_slow(ctx, sp, 0)); OP_CMP(OP_neq, !=, js_eq_slow(ctx, sp, 1)); OP_CMP(OP_strict_eq, ==, js_strict_eq_slow(ctx, sp, 0)); OP_CMP(OP_strict_neq, !=, js_strict_eq_slow(ctx, sp, 1)); CASE(OP_in): sf->cur_pc = pc; if (js_operator_in(ctx, sp)) goto exception; sp--; BREAK; CASE(OP_private_in): if (js_operator_private_in(ctx, sp)) goto exception; sp--; BREAK; CASE(OP_instanceof): sf->cur_pc = pc; if (js_operator_instanceof(ctx, sp)) goto exception; sp--; BREAK; CASE(OP_typeof): { JSValue op1; JSAtom atom; op1 = sp[-1]; atom = js_operator_typeof(ctx, op1); JS_FreeValue(ctx, op1); sp[-1] = JS_AtomToString(ctx, atom); } BREAK; CASE(OP_delete): sf->cur_pc = pc; if (js_operator_delete(ctx, sp)) goto exception; sp--; BREAK; CASE(OP_delete_var): { JSAtom atom; int ret; atom = get_u32(pc); pc += 4; sf->cur_pc = pc; ret = JS_DeleteProperty(ctx, ctx->global_obj, atom, 0); if (unlikely(ret < 0)) goto exception; *sp++ = js_bool(ret); } BREAK; CASE(OP_to_object): if (JS_VALUE_GET_TAG(sp[-1]) != JS_TAG_OBJECT) { sf->cur_pc = pc; ret_val = JS_ToObject(ctx, sp[-1]); if (JS_IsException(ret_val)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = ret_val; } BREAK; CASE(OP_to_propkey): switch (JS_VALUE_GET_TAG(sp[-1])) { case JS_TAG_INT: case JS_TAG_STRING: case JS_TAG_SYMBOL: break; default: sf->cur_pc = pc; ret_val = JS_ToPropertyKey(ctx, sp[-1]); if (JS_IsException(ret_val)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = ret_val; break; } BREAK; CASE(OP_to_propkey2): /* must be tested first */ if (unlikely(JS_IsUndefined(sp[-2]) || JS_IsNull(sp[-2]))) { JS_ThrowTypeError(ctx, "value has no property"); goto exception; } switch (JS_VALUE_GET_TAG(sp[-1])) { case JS_TAG_INT: case JS_TAG_STRING: case JS_TAG_SYMBOL: break; default: sf->cur_pc = pc; ret_val = JS_ToPropertyKey(ctx, sp[-1]); if (JS_IsException(ret_val)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = ret_val; break; } BREAK; CASE(OP_with_get_var): CASE(OP_with_put_var): CASE(OP_with_delete_var): CASE(OP_with_make_ref): CASE(OP_with_get_ref): CASE(OP_with_get_ref_undef): { JSAtom atom; int32_t diff; JSValue obj, val; int ret, is_with; atom = get_u32(pc); diff = get_u32(pc + 4); is_with = pc[8]; pc += 9; sf->cur_pc = pc; obj = sp[-1]; ret = JS_HasProperty(ctx, obj, atom); if (unlikely(ret < 0)) goto exception; if (ret) { if (is_with) { ret = js_has_unscopable(ctx, obj, atom); if (unlikely(ret < 0)) goto exception; if (ret) goto no_with; } switch (opcode) { case OP_with_get_var: val = JS_GetProperty(ctx, obj, atom); if (unlikely(JS_IsException(val))) goto exception; set_value(ctx, &sp[-1], val); break; case OP_with_put_var: /* XXX: check if strict mode */ ret = JS_SetPropertyInternal(ctx, obj, atom, sp[-2], JS_PROP_THROW_STRICT); JS_FreeValue(ctx, sp[-1]); sp -= 2; if (unlikely(ret < 0)) goto exception; break; case OP_with_delete_var: ret = JS_DeleteProperty(ctx, obj, atom, 0); if (unlikely(ret < 0)) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = js_bool(ret); break; case OP_with_make_ref: /* produce a pair object/propname on the stack */ *sp++ = JS_AtomToValue(ctx, atom); break; case OP_with_get_ref: /* produce a pair object/method on the stack */ val = JS_GetProperty(ctx, obj, atom); if (unlikely(JS_IsException(val))) goto exception; *sp++ = val; break; case OP_with_get_ref_undef: /* produce a pair undefined/function on the stack */ val = JS_GetProperty(ctx, obj, atom); if (unlikely(JS_IsException(val))) goto exception; JS_FreeValue(ctx, sp[-1]); sp[-1] = JS_UNDEFINED; *sp++ = val; break; } pc += diff - 5; } else { no_with: /* if not jumping, drop the object argument */ JS_FreeValue(ctx, sp[-1]); sp--; } } BREAK; CASE(OP_await): ret_val = js_int32(FUNC_RET_AWAIT); goto done_generator; CASE(OP_yield): ret_val = js_int32(FUNC_RET_YIELD); goto done_generator; CASE(OP_yield_star): CASE(OP_async_yield_star): ret_val = js_int32(FUNC_RET_YIELD_STAR); goto done_generator; CASE(OP_return_async): CASE(OP_initial_yield): ret_val = JS_UNDEFINED; goto done_generator; CASE(OP_nop): BREAK; CASE(OP_is_undefined_or_null): if (JS_VALUE_GET_TAG(sp[-1]) == JS_TAG_UNDEFINED || JS_VALUE_GET_TAG(sp[-1]) == JS_TAG_NULL) { goto set_true; } else { goto free_and_set_false; } CASE(OP_is_undefined): if (JS_VALUE_GET_TAG(sp[-1]) == JS_TAG_UNDEFINED) { goto set_true; } else { goto free_and_set_false; } CASE(OP_is_null): if (JS_VALUE_GET_TAG(sp[-1]) == JS_TAG_NULL) { goto set_true; } else { goto free_and_set_false; } /* XXX: could merge to a single opcode */ CASE(OP_typeof_is_undefined): /* different from OP_is_undefined because of isHTMLDDA */ if (js_operator_typeof(ctx, sp[-1]) == JS_ATOM_undefined) { goto free_and_set_true; } else { goto free_and_set_false; } CASE(OP_typeof_is_function): if (js_operator_typeof(ctx, sp[-1]) == JS_ATOM_function) { goto free_and_set_true; } else { goto free_and_set_false; } free_and_set_true: JS_FreeValue(ctx, sp[-1]); set_true: sp[-1] = JS_TRUE; BREAK; free_and_set_false: JS_FreeValue(ctx, sp[-1]); sp[-1] = JS_FALSE; BREAK; CASE(OP_invalid): DEFAULT: JS_ThrowInternalError(ctx, "invalid opcode: pc=%u opcode=0x%02x", (int)(pc - b->byte_code_buf - 1), opcode); goto exception; } } exception: if (needs_backtrace(rt->current_exception) || JS_IsUndefined(ctx->error_back_trace)) { sf->cur_pc = pc; build_backtrace(ctx, rt->current_exception, JS_UNDEFINED, NULL, 0, 0, 0); } if (!JS_IsUncatchableError(ctx, rt->current_exception)) { while (sp > stack_buf) { JSValue val = *--sp; JS_FreeValue(ctx, val); if (JS_VALUE_GET_TAG(val) == JS_TAG_CATCH_OFFSET) { int pos = JS_VALUE_GET_INT(val); if (pos == 0) { /* enumerator: close it with a throw */ JS_FreeValue(ctx, sp[-1]); /* drop the next method */ sp--; JS_IteratorClose(ctx, sp[-1], true); } else { *sp++ = rt->current_exception; rt->current_exception = JS_UNINITIALIZED; JS_FreeValueRT(rt, ctx->error_back_trace); ctx->error_back_trace = JS_UNDEFINED; pc = b->byte_code_buf + pos; goto restart; } } } } ret_val = JS_EXCEPTION; /* the local variables are freed by the caller in the generator case. Hence the label 'done' should never be reached in a generator function. */ if (b->func_kind != JS_FUNC_NORMAL) { done_generator: sf->cur_pc = pc; sf->cur_sp = sp; } else { done: if (unlikely(!list_empty(&sf->var_ref_list))) { /* variable references reference the stack: must close them */ close_var_refs(rt, sf); } /* free the local variables and stack */ for(pval = local_buf; pval < sp; pval++) { JS_FreeValue(ctx, *pval); } } rt->current_stack_frame = sf->prev_frame; return ret_val; } JSValue JS_Call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv) { return JS_CallInternal(ctx, func_obj, this_obj, JS_UNDEFINED, argc, argv, JS_CALL_FLAG_COPY_ARGV); } static JSValue JS_CallFree(JSContext *ctx, JSValue func_obj, JSValueConst this_obj, int argc, JSValueConst *argv) { JSValue res = JS_CallInternal(ctx, func_obj, this_obj, JS_UNDEFINED, argc, argv, JS_CALL_FLAG_COPY_ARGV); JS_FreeValue(ctx, func_obj); return res; } /* warning: the refcount of the context is not incremented. Return NULL in case of exception (case of revoked proxy only) */ static JSContext *JS_GetFunctionRealm(JSContext *ctx, JSValueConst func_obj) { JSObject *p; JSContext *realm; if (JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT) return ctx; p = JS_VALUE_GET_OBJ(func_obj); switch(p->class_id) { case JS_CLASS_C_FUNCTION: realm = p->u.cfunc.realm; break; case JS_CLASS_BYTECODE_FUNCTION: case JS_CLASS_GENERATOR_FUNCTION: case JS_CLASS_ASYNC_FUNCTION: case JS_CLASS_ASYNC_GENERATOR_FUNCTION: { JSFunctionBytecode *b; b = p->u.func.function_bytecode; realm = b->realm; } break; case JS_CLASS_PROXY: { JSProxyData *s = p->u.opaque; if (!s) return ctx; if (s->is_revoked) { JS_ThrowTypeErrorRevokedProxy(ctx); return NULL; } else { realm = JS_GetFunctionRealm(ctx, s->target); } } break; case JS_CLASS_BOUND_FUNCTION: { JSBoundFunction *bf = p->u.bound_function; realm = JS_GetFunctionRealm(ctx, bf->func_obj); } break; default: realm = ctx; break; } return realm; } static JSValue js_create_from_ctor(JSContext *ctx, JSValueConst ctor, int class_id) { JSValue proto, obj; JSContext *realm; if (JS_IsUndefined(ctor)) { proto = js_dup(ctx->class_proto[class_id]); } else { proto = JS_GetProperty(ctx, ctor, JS_ATOM_prototype); if (JS_IsException(proto)) return proto; if (!JS_IsObject(proto)) { JS_FreeValue(ctx, proto); realm = JS_GetFunctionRealm(ctx, ctor); if (!realm) return JS_EXCEPTION; proto = js_dup(realm->class_proto[class_id]); } } obj = JS_NewObjectProtoClass(ctx, proto, class_id); JS_FreeValue(ctx, proto); return obj; } /* argv[] is modified if (flags & JS_CALL_FLAG_COPY_ARGV) = 0. */ static JSValue JS_CallConstructorInternal(JSContext *ctx, JSValueConst func_obj, JSValueConst new_target, int argc, JSValueConst *argv, int flags) { JSObject *p; JSFunctionBytecode *b; if (js_poll_interrupts(ctx)) return JS_EXCEPTION; flags |= JS_CALL_FLAG_CONSTRUCTOR; if (unlikely(JS_VALUE_GET_TAG(func_obj) != JS_TAG_OBJECT)) goto not_a_function; p = JS_VALUE_GET_OBJ(func_obj); if (unlikely(!p->is_constructor)) return JS_ThrowTypeError(ctx, "not a constructor"); if (unlikely(p->class_id != JS_CLASS_BYTECODE_FUNCTION)) { JSClassCall *call_func; call_func = ctx->rt->class_array[p->class_id].call; if (!call_func) { not_a_function: return JS_ThrowTypeErrorNotAFunction(ctx); } return call_func(ctx, func_obj, new_target, argc, argv, flags); } b = p->u.func.function_bytecode; if (b->is_derived_class_constructor) { return JS_CallInternal(ctx, func_obj, JS_UNDEFINED, new_target, argc, argv, flags); } else { JSValue obj, ret; /* legacy constructor behavior */ obj = js_create_from_ctor(ctx, new_target, JS_CLASS_OBJECT); if (JS_IsException(obj)) return JS_EXCEPTION; ret = JS_CallInternal(ctx, func_obj, obj, new_target, argc, argv, flags); if (JS_VALUE_GET_TAG(ret) == JS_TAG_OBJECT || JS_IsException(ret)) { JS_FreeValue(ctx, obj); return ret; } else { JS_FreeValue(ctx, ret); return obj; } } } JSValue JS_CallConstructor2(JSContext *ctx, JSValueConst func_obj, JSValueConst new_target, int argc, JSValueConst *argv) { return JS_CallConstructorInternal(ctx, func_obj, new_target, argc, argv, JS_CALL_FLAG_COPY_ARGV); } JSValue JS_CallConstructor(JSContext *ctx, JSValueConst func_obj, int argc, JSValueConst *argv) { return JS_CallConstructorInternal(ctx, func_obj, func_obj, argc, argv, JS_CALL_FLAG_COPY_ARGV); } JSValue JS_Invoke(JSContext *ctx, JSValueConst this_val, JSAtom atom, int argc, JSValueConst *argv) { JSValue func_obj; func_obj = JS_GetProperty(ctx, this_val, atom); if (JS_IsException(func_obj)) return func_obj; return JS_CallFree(ctx, func_obj, this_val, argc, argv); } static JSValue JS_InvokeFree(JSContext *ctx, JSValue this_val, JSAtom atom, int argc, JSValueConst *argv) { JSValue res = JS_Invoke(ctx, this_val, atom, argc, argv); JS_FreeValue(ctx, this_val); return res; } /* JSAsyncFunctionState (used by generator and async functions) */ static __exception int async_func_init(JSContext *ctx, JSAsyncFunctionState *s, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv) { JSObject *p; JSFunctionBytecode *b; JSStackFrame *sf; int local_count, i, arg_buf_len, n; sf = &s->frame; init_list_head(&sf->var_ref_list); p = JS_VALUE_GET_OBJ(func_obj); b = p->u.func.function_bytecode; sf->is_strict_mode = b->is_strict_mode; sf->cur_pc = b->byte_code_buf; arg_buf_len = max_int(b->arg_count, argc); local_count = arg_buf_len + b->var_count + b->stack_size; sf->arg_buf = js_malloc(ctx, sizeof(JSValue) * max_int(local_count, 1)); if (!sf->arg_buf) return -1; sf->cur_func = js_dup(func_obj); s->this_val = js_dup(this_obj); s->argc = argc; sf->arg_count = arg_buf_len; sf->var_buf = sf->arg_buf + arg_buf_len; sf->cur_sp = sf->var_buf + b->var_count; for(i = 0; i < argc; i++) sf->arg_buf[i] = js_dup(argv[i]); n = arg_buf_len + b->var_count; for(i = argc; i < n; i++) sf->arg_buf[i] = JS_UNDEFINED; return 0; } static void async_func_mark(JSRuntime *rt, JSAsyncFunctionState *s, JS_MarkFunc *mark_func) { JSStackFrame *sf; JSValue *sp; sf = &s->frame; JS_MarkValue(rt, sf->cur_func, mark_func); JS_MarkValue(rt, s->this_val, mark_func); if (sf->cur_sp) { /* if the function is running, cur_sp is not known so we cannot mark the stack. Marking the variables is not needed because a running function cannot be part of a removable cycle */ for(sp = sf->arg_buf; sp < sf->cur_sp; sp++) JS_MarkValue(rt, *sp, mark_func); } } static void async_func_free(JSRuntime *rt, JSAsyncFunctionState *s) { JSStackFrame *sf; JSValue *sp; sf = &s->frame; /* close the closure variables. */ close_var_refs(rt, sf); if (sf->arg_buf) { /* cannot free the function if it is running */ assert(sf->cur_sp != NULL); for(sp = sf->arg_buf; sp < sf->cur_sp; sp++) { JS_FreeValueRT(rt, *sp); } js_free_rt(rt, sf->arg_buf); } JS_FreeValueRT(rt, sf->cur_func); JS_FreeValueRT(rt, s->this_val); } static JSValue async_func_resume(JSContext *ctx, JSAsyncFunctionState *s) { JSValue func_obj; if (js_check_stack_overflow(ctx->rt, 0)) return JS_ThrowStackOverflow(ctx); /* the tag does not matter provided it is not an object */ func_obj = JS_MKPTR(JS_TAG_INT, s); return JS_CallInternal(ctx, func_obj, s->this_val, JS_UNDEFINED, s->argc, vc(s->frame.arg_buf), JS_CALL_FLAG_GENERATOR); } /* Generators */ typedef enum JSGeneratorStateEnum { JS_GENERATOR_STATE_SUSPENDED_START, JS_GENERATOR_STATE_SUSPENDED_YIELD, JS_GENERATOR_STATE_SUSPENDED_YIELD_STAR, JS_GENERATOR_STATE_EXECUTING, JS_GENERATOR_STATE_COMPLETED, } JSGeneratorStateEnum; typedef struct JSGeneratorData { JSGeneratorStateEnum state; JSAsyncFunctionState func_state; } JSGeneratorData; static void free_generator_stack_rt(JSRuntime *rt, JSGeneratorData *s) { if (s->state == JS_GENERATOR_STATE_COMPLETED) return; async_func_free(rt, &s->func_state); s->state = JS_GENERATOR_STATE_COMPLETED; } static void js_generator_finalizer(JSRuntime *rt, JSValueConst obj) { JSGeneratorData *s = JS_GetOpaque(obj, JS_CLASS_GENERATOR); if (s) { free_generator_stack_rt(rt, s); js_free_rt(rt, s); } } static void free_generator_stack(JSContext *ctx, JSGeneratorData *s) { free_generator_stack_rt(ctx->rt, s); } static void js_generator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JSGeneratorData *s = p->u.generator_data; if (!s || s->state == JS_GENERATOR_STATE_COMPLETED) return; async_func_mark(rt, &s->func_state, mark_func); } /* XXX: use enum */ #define GEN_MAGIC_NEXT 0 #define GEN_MAGIC_RETURN 1 #define GEN_MAGIC_THROW 2 static JSValue js_generator_next(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int *pdone, int magic) { JSGeneratorData *s = JS_GetOpaque(this_val, JS_CLASS_GENERATOR); JSStackFrame *sf; JSValue ret, func_ret; *pdone = true; if (!s) return JS_ThrowTypeError(ctx, "not a generator"); sf = &s->func_state.frame; switch(s->state) { default: case JS_GENERATOR_STATE_SUSPENDED_START: if (magic == GEN_MAGIC_NEXT) { goto exec_no_arg; } else { free_generator_stack(ctx, s); goto done; } break; case JS_GENERATOR_STATE_SUSPENDED_YIELD_STAR: case JS_GENERATOR_STATE_SUSPENDED_YIELD: /* cur_sp[-1] was set to JS_UNDEFINED in the previous call */ ret = js_dup(argv[0]); if (magic == GEN_MAGIC_THROW && s->state == JS_GENERATOR_STATE_SUSPENDED_YIELD) { JS_Throw(ctx, ret); s->func_state.throw_flag = true; } else { sf->cur_sp[-1] = ret; sf->cur_sp[0] = js_int32(magic); sf->cur_sp++; exec_no_arg: s->func_state.throw_flag = false; } s->state = JS_GENERATOR_STATE_EXECUTING; func_ret = async_func_resume(ctx, &s->func_state); s->state = JS_GENERATOR_STATE_SUSPENDED_YIELD; if (JS_IsException(func_ret)) { /* finalize the execution in case of exception */ free_generator_stack(ctx, s); return func_ret; } if (JS_VALUE_GET_TAG(func_ret) == JS_TAG_INT) { /* get the returned yield value at the top of the stack */ ret = sf->cur_sp[-1]; sf->cur_sp[-1] = JS_UNDEFINED; if (JS_VALUE_GET_INT(func_ret) == FUNC_RET_YIELD_STAR) { s->state = JS_GENERATOR_STATE_SUSPENDED_YIELD_STAR; /* return (value, done) object */ *pdone = 2; } else { *pdone = false; } } else { /* end of iterator */ ret = sf->cur_sp[-1]; sf->cur_sp[-1] = JS_UNDEFINED; JS_FreeValue(ctx, func_ret); free_generator_stack(ctx, s); } break; case JS_GENERATOR_STATE_COMPLETED: done: /* execution is finished */ switch(magic) { default: case GEN_MAGIC_NEXT: ret = JS_UNDEFINED; break; case GEN_MAGIC_RETURN: ret = js_dup(argv[0]); break; case GEN_MAGIC_THROW: ret = JS_Throw(ctx, js_dup(argv[0])); break; } break; case JS_GENERATOR_STATE_EXECUTING: ret = JS_ThrowTypeError(ctx, "cannot invoke a running generator"); break; } return ret; } static JSValue js_generator_function_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSValue obj, func_ret; JSGeneratorData *s; s = js_mallocz(ctx, sizeof(*s)); if (!s) return JS_EXCEPTION; s->state = JS_GENERATOR_STATE_SUSPENDED_START; if (async_func_init(ctx, &s->func_state, func_obj, this_obj, argc, argv)) { s->state = JS_GENERATOR_STATE_COMPLETED; goto fail; } /* execute the function up to 'OP_initial_yield' */ func_ret = async_func_resume(ctx, &s->func_state); if (JS_IsException(func_ret)) goto fail; JS_FreeValue(ctx, func_ret); obj = js_create_from_ctor(ctx, func_obj, JS_CLASS_GENERATOR); if (JS_IsException(obj)) goto fail; JS_SetOpaqueInternal(obj, s); return obj; fail: free_generator_stack_rt(ctx->rt, s); js_free(ctx, s); return JS_EXCEPTION; } /* AsyncFunction */ static void js_async_function_terminate(JSRuntime *rt, JSAsyncFunctionData *s) { if (s->is_active) { async_func_free(rt, &s->func_state); s->is_active = false; } } static void js_async_function_free0(JSRuntime *rt, JSAsyncFunctionData *s) { js_async_function_terminate(rt, s); JS_FreeValueRT(rt, s->resolving_funcs[0]); JS_FreeValueRT(rt, s->resolving_funcs[1]); remove_gc_object(&s->header); js_free_rt(rt, s); } static void js_async_function_free(JSRuntime *rt, JSAsyncFunctionData *s) { if (--s->header.ref_count == 0) { js_async_function_free0(rt, s); } } static void js_async_function_resolve_finalizer(JSRuntime *rt, JSValueConst val) { JSObject *p = JS_VALUE_GET_OBJ(val); JSAsyncFunctionData *s = p->u.async_function_data; if (s) { js_async_function_free(rt, s); } } static void js_async_function_resolve_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSObject *p = JS_VALUE_GET_OBJ(val); JSAsyncFunctionData *s = p->u.async_function_data; if (s) { mark_func(rt, &s->header); } } static int js_async_function_resolve_create(JSContext *ctx, JSAsyncFunctionData *s, JSValue *resolving_funcs) { int i; JSObject *p; for(i = 0; i < 2; i++) { resolving_funcs[i] = JS_NewObjectProtoClass(ctx, ctx->function_proto, JS_CLASS_ASYNC_FUNCTION_RESOLVE + i); if (JS_IsException(resolving_funcs[i])) { if (i == 1) JS_FreeValue(ctx, resolving_funcs[0]); return -1; } p = JS_VALUE_GET_OBJ(resolving_funcs[i]); s->header.ref_count++; p->u.async_function_data = s; } return 0; } static bool js_async_function_resume(JSContext *ctx, JSAsyncFunctionData *s) { bool is_success = true; JSValue func_ret, ret2; func_ret = async_func_resume(ctx, &s->func_state); if (JS_IsException(func_ret)) { fail: if (unlikely(JS_IsUncatchableError(ctx, ctx->rt->current_exception))) { is_success = false; } else { JSValue error = JS_GetException(ctx); ret2 = JS_Call(ctx, s->resolving_funcs[1], JS_UNDEFINED, 1, vc(&error)); JS_FreeValue(ctx, error); resolved: if (unlikely(JS_IsException(ret2))) { if (JS_IsUncatchableError(ctx, ctx->rt->current_exception)) { is_success = false; } else { abort(); /* BUG */ } } JS_FreeValue(ctx, ret2); } js_async_function_terminate(ctx->rt, s); } else { JSValue value; value = s->func_state.frame.cur_sp[-1]; s->func_state.frame.cur_sp[-1] = JS_UNDEFINED; if (JS_IsUndefined(func_ret)) { /* function returned */ ret2 = JS_Call(ctx, s->resolving_funcs[0], JS_UNDEFINED, 1, vc(&value)); JS_FreeValue(ctx, value); goto resolved; } else { JSValue promise, resolving_funcs[2], resolving_funcs1[2]; int i, res; /* await */ JS_FreeValue(ctx, func_ret); /* not used */ promise = js_promise_resolve(ctx, ctx->promise_ctor, 1, vc(&value), 0); JS_FreeValue(ctx, value); if (JS_IsException(promise)) goto fail; if (js_async_function_resolve_create(ctx, s, resolving_funcs)) { JS_FreeValue(ctx, promise); goto fail; } /* Note: no need to create 'thrownawayCapability' as in the spec */ for(i = 0; i < 2; i++) resolving_funcs1[i] = JS_UNDEFINED; res = perform_promise_then(ctx, promise, vc(resolving_funcs), vc(resolving_funcs1)); JS_FreeValue(ctx, promise); for(i = 0; i < 2; i++) JS_FreeValue(ctx, resolving_funcs[i]); if (res) goto fail; } } return is_success; } static JSValue js_async_function_resolve_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSObject *p = JS_VALUE_GET_OBJ(func_obj); JSAsyncFunctionData *s = p->u.async_function_data; bool is_reject = p->class_id - JS_CLASS_ASYNC_FUNCTION_RESOLVE; JSValueConst arg; if (argc > 0) arg = argv[0]; else arg = JS_UNDEFINED; s->func_state.throw_flag = is_reject; if (is_reject) { JS_Throw(ctx, js_dup(arg)); } else { /* return value of await */ s->func_state.frame.cur_sp[-1] = js_dup(arg); } if (!js_async_function_resume(ctx, s)) return JS_EXCEPTION; return JS_UNDEFINED; } static JSValue js_async_function_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSValue promise; JSAsyncFunctionData *s; s = js_mallocz(ctx, sizeof(*s)); if (!s) return JS_EXCEPTION; s->header.ref_count = 1; add_gc_object(ctx->rt, &s->header, JS_GC_OBJ_TYPE_ASYNC_FUNCTION); s->is_active = false; s->resolving_funcs[0] = JS_UNDEFINED; s->resolving_funcs[1] = JS_UNDEFINED; promise = JS_NewPromiseCapability(ctx, s->resolving_funcs); if (JS_IsException(promise)) goto fail; if (async_func_init(ctx, &s->func_state, func_obj, this_obj, argc, argv)) { fail: JS_FreeValue(ctx, promise); js_async_function_free(ctx->rt, s); return JS_EXCEPTION; } s->is_active = true; if (!js_async_function_resume(ctx, s)) goto fail; js_async_function_free(ctx->rt, s); return promise; } /* AsyncGenerator */ typedef enum JSAsyncGeneratorStateEnum { JS_ASYNC_GENERATOR_STATE_SUSPENDED_START, JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD, JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD_STAR, JS_ASYNC_GENERATOR_STATE_EXECUTING, JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN, JS_ASYNC_GENERATOR_STATE_COMPLETED, } JSAsyncGeneratorStateEnum; typedef struct JSAsyncGeneratorRequest { struct list_head link; /* completion */ int completion_type; /* GEN_MAGIC_x */ JSValue result; /* promise capability */ JSValue promise; JSValue resolving_funcs[2]; } JSAsyncGeneratorRequest; typedef struct JSAsyncGeneratorData { JSObject *generator; /* back pointer to the object (const) */ JSAsyncGeneratorStateEnum state; JSAsyncFunctionState func_state; struct list_head queue; /* list of JSAsyncGeneratorRequest.link */ } JSAsyncGeneratorData; static void js_async_generator_free(JSRuntime *rt, JSAsyncGeneratorData *s) { struct list_head *el, *el1; JSAsyncGeneratorRequest *req; list_for_each_safe(el, el1, &s->queue) { req = list_entry(el, JSAsyncGeneratorRequest, link); JS_FreeValueRT(rt, req->result); JS_FreeValueRT(rt, req->promise); JS_FreeValueRT(rt, req->resolving_funcs[0]); JS_FreeValueRT(rt, req->resolving_funcs[1]); js_free_rt(rt, req); } if (s->state != JS_ASYNC_GENERATOR_STATE_COMPLETED && s->state != JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN) { async_func_free(rt, &s->func_state); } js_free_rt(rt, s); } static void js_async_generator_finalizer(JSRuntime *rt, JSValueConst obj) { JSAsyncGeneratorData *s = JS_GetOpaque(obj, JS_CLASS_ASYNC_GENERATOR); if (s) { js_async_generator_free(rt, s); } } static void js_async_generator_mark(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func) { JSAsyncGeneratorData *s = JS_GetOpaque(val, JS_CLASS_ASYNC_GENERATOR); struct list_head *el; JSAsyncGeneratorRequest *req; if (s) { list_for_each(el, &s->queue) { req = list_entry(el, JSAsyncGeneratorRequest, link); JS_MarkValue(rt, req->result, mark_func); JS_MarkValue(rt, req->promise, mark_func); JS_MarkValue(rt, req->resolving_funcs[0], mark_func); JS_MarkValue(rt, req->resolving_funcs[1], mark_func); } if (s->state != JS_ASYNC_GENERATOR_STATE_COMPLETED && s->state != JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN) { async_func_mark(rt, &s->func_state, mark_func); } } } static JSValue js_async_generator_resolve_function(JSContext *ctx, JSValueConst this_obj, int argc, JSValueConst *argv, int magic, JSValueConst *func_data); static int js_async_generator_resolve_function_create(JSContext *ctx, JSValue generator, JSValue *resolving_funcs, bool is_resume_next) { int i; JSValue func; for(i = 0; i < 2; i++) { func = JS_NewCFunctionData(ctx, js_async_generator_resolve_function, 1, i + is_resume_next * 2, 1, vc(&generator)); if (JS_IsException(func)) { if (i == 1) JS_FreeValue(ctx, resolving_funcs[0]); return -1; } resolving_funcs[i] = func; } return 0; } static int js_async_generator_await(JSContext *ctx, JSAsyncGeneratorData *s, JSValue value) { JSValue promise, resolving_funcs[2], resolving_funcs1[2]; int i, res; promise = js_promise_resolve(ctx, ctx->promise_ctor, 1, vc(&value), 0); if (JS_IsException(promise)) goto fail; if (js_async_generator_resolve_function_create(ctx, JS_MKPTR(JS_TAG_OBJECT, s->generator), resolving_funcs, false)) { JS_FreeValue(ctx, promise); goto fail; } /* Note: no need to create 'thrownawayCapability' as in the spec */ for(i = 0; i < 2; i++) resolving_funcs1[i] = JS_UNDEFINED; res = perform_promise_then(ctx, promise, vc(resolving_funcs), vc(resolving_funcs1)); JS_FreeValue(ctx, promise); for(i = 0; i < 2; i++) JS_FreeValue(ctx, resolving_funcs[i]); if (res) goto fail; return 0; fail: return -1; } static void js_async_generator_resolve_or_reject(JSContext *ctx, JSAsyncGeneratorData *s, JSValueConst result, int is_reject) { JSAsyncGeneratorRequest *next; JSValue ret; next = list_entry(s->queue.next, JSAsyncGeneratorRequest, link); list_del(&next->link); ret = JS_Call(ctx, next->resolving_funcs[is_reject], JS_UNDEFINED, 1, &result); JS_FreeValue(ctx, ret); JS_FreeValue(ctx, next->result); JS_FreeValue(ctx, next->promise); JS_FreeValue(ctx, next->resolving_funcs[0]); JS_FreeValue(ctx, next->resolving_funcs[1]); js_free(ctx, next); } static void js_async_generator_resolve(JSContext *ctx, JSAsyncGeneratorData *s, JSValueConst value, bool done) { JSValue result; result = js_create_iterator_result(ctx, js_dup(value), done); /* XXX: better exception handling ? */ js_async_generator_resolve_or_reject(ctx, s, result, 0); JS_FreeValue(ctx, result); } static void js_async_generator_reject(JSContext *ctx, JSAsyncGeneratorData *s, JSValueConst exception) { js_async_generator_resolve_or_reject(ctx, s, exception, 1); } static void js_async_generator_complete(JSContext *ctx, JSAsyncGeneratorData *s) { if (s->state != JS_ASYNC_GENERATOR_STATE_COMPLETED) { s->state = JS_ASYNC_GENERATOR_STATE_COMPLETED; async_func_free(ctx->rt, &s->func_state); } } static int js_async_generator_completed_return(JSContext *ctx, JSAsyncGeneratorData *s, JSValue value) { JSValue promise, resolving_funcs[2], resolving_funcs1[2]; int res; // Can fail looking up JS_ATOM_constructor when is_reject==0. promise = js_promise_resolve(ctx, ctx->promise_ctor, 1, vc(&value), /*is_reject*/0); // A poisoned .constructor property is observable and the resulting // exception should be delivered to the catch handler. if (JS_IsException(promise)) { JSValue err = JS_GetException(ctx); promise = js_promise_resolve(ctx, ctx->promise_ctor, 1, vc(&err), /*is_reject*/1); JS_FreeValue(ctx, err); if (JS_IsException(promise)) return -1; } if (js_async_generator_resolve_function_create(ctx, JS_MKPTR(JS_TAG_OBJECT, s->generator), resolving_funcs1, true)) { JS_FreeValue(ctx, promise); return -1; } resolving_funcs[0] = JS_UNDEFINED; resolving_funcs[1] = JS_UNDEFINED; res = perform_promise_then(ctx, promise, vc(resolving_funcs1), vc(resolving_funcs)); JS_FreeValue(ctx, resolving_funcs1[0]); JS_FreeValue(ctx, resolving_funcs1[1]); JS_FreeValue(ctx, promise); return res; } static void js_async_generator_resume_next(JSContext *ctx, JSAsyncGeneratorData *s) { JSAsyncGeneratorRequest *next; JSValue func_ret, value; for(;;) { if (list_empty(&s->queue)) break; next = list_entry(s->queue.next, JSAsyncGeneratorRequest, link); switch(s->state) { case JS_ASYNC_GENERATOR_STATE_EXECUTING: /* only happens when restarting execution after await() */ goto resume_exec; case JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN: goto done; case JS_ASYNC_GENERATOR_STATE_SUSPENDED_START: if (next->completion_type == GEN_MAGIC_NEXT) { goto exec_no_arg; } else { js_async_generator_complete(ctx, s); } break; case JS_ASYNC_GENERATOR_STATE_COMPLETED: if (next->completion_type == GEN_MAGIC_NEXT) { js_async_generator_resolve(ctx, s, JS_UNDEFINED, true); } else if (next->completion_type == GEN_MAGIC_RETURN) { s->state = JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN; js_async_generator_completed_return(ctx, s, next->result); } else { js_async_generator_reject(ctx, s, next->result); } goto done; case JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD: case JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD_STAR: value = js_dup(next->result); if (next->completion_type == GEN_MAGIC_THROW && s->state == JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD) { JS_Throw(ctx, value); s->func_state.throw_flag = true; } else { /* 'yield' returns a value. 'yield *' also returns a value in case the 'throw' method is called */ s->func_state.frame.cur_sp[-1] = value; s->func_state.frame.cur_sp[0] = js_int32(next->completion_type); s->func_state.frame.cur_sp++; exec_no_arg: s->func_state.throw_flag = false; } s->state = JS_ASYNC_GENERATOR_STATE_EXECUTING; resume_exec: func_ret = async_func_resume(ctx, &s->func_state); if (JS_IsException(func_ret)) { value = JS_GetException(ctx); js_async_generator_complete(ctx, s); js_async_generator_reject(ctx, s, value); JS_FreeValue(ctx, value); } else if (JS_VALUE_GET_TAG(func_ret) == JS_TAG_INT) { int func_ret_code, ret; value = s->func_state.frame.cur_sp[-1]; s->func_state.frame.cur_sp[-1] = JS_UNDEFINED; func_ret_code = JS_VALUE_GET_INT(func_ret); switch(func_ret_code) { case FUNC_RET_YIELD: case FUNC_RET_YIELD_STAR: if (func_ret_code == FUNC_RET_YIELD_STAR) s->state = JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD_STAR; else s->state = JS_ASYNC_GENERATOR_STATE_SUSPENDED_YIELD; js_async_generator_resolve(ctx, s, value, false); JS_FreeValue(ctx, value); break; case FUNC_RET_AWAIT: ret = js_async_generator_await(ctx, s, value); JS_FreeValue(ctx, value); if (ret < 0) { /* exception: throw it */ s->func_state.throw_flag = true; goto resume_exec; } goto done; default: abort(); } } else { assert(JS_IsUndefined(func_ret)); /* end of function */ value = s->func_state.frame.cur_sp[-1]; s->func_state.frame.cur_sp[-1] = JS_UNDEFINED; js_async_generator_complete(ctx, s); js_async_generator_resolve(ctx, s, value, true); JS_FreeValue(ctx, value); } break; default: abort(); } } done: ; } static JSValue js_async_generator_resolve_function(JSContext *ctx, JSValueConst this_obj, int argc, JSValueConst *argv, int magic, JSValueConst *func_data) { bool is_reject = magic & 1; JSAsyncGeneratorData *s = JS_GetOpaque(func_data[0], JS_CLASS_ASYNC_GENERATOR); JSValueConst arg = argv[0]; /* XXX: what if s == NULL */ if (magic >= 2) { /* resume next case in AWAITING_RETURN state */ assert(s->state == JS_ASYNC_GENERATOR_STATE_AWAITING_RETURN || s->state == JS_ASYNC_GENERATOR_STATE_COMPLETED); s->state = JS_ASYNC_GENERATOR_STATE_COMPLETED; if (is_reject) { js_async_generator_reject(ctx, s, arg); } else { js_async_generator_resolve(ctx, s, arg, true); } } else { /* restart function execution after await() */ assert(s->state == JS_ASYNC_GENERATOR_STATE_EXECUTING); s->func_state.throw_flag = is_reject; if (is_reject) { JS_Throw(ctx, js_dup(arg)); } else { /* return value of await */ s->func_state.frame.cur_sp[-1] = js_dup(arg); } js_async_generator_resume_next(ctx, s); } return JS_UNDEFINED; } /* magic = GEN_MAGIC_x */ static JSValue js_async_generator_next(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic) { JSAsyncGeneratorData *s = JS_GetOpaque(this_val, JS_CLASS_ASYNC_GENERATOR); JSValue promise, resolving_funcs[2]; JSAsyncGeneratorRequest *req; promise = JS_NewPromiseCapability(ctx, resolving_funcs); if (JS_IsException(promise)) return JS_EXCEPTION; if (!s) { JSValue err, res2; JS_ThrowTypeError(ctx, "not an AsyncGenerator object"); err = JS_GetException(ctx); res2 = JS_Call(ctx, resolving_funcs[1], JS_UNDEFINED, 1, vc(&err)); JS_FreeValue(ctx, err); JS_FreeValue(ctx, res2); JS_FreeValue(ctx, resolving_funcs[0]); JS_FreeValue(ctx, resolving_funcs[1]); return promise; } req = js_mallocz(ctx, sizeof(*req)); if (!req) goto fail; req->completion_type = magic; req->result = js_dup(argv[0]); req->promise = js_dup(promise); req->resolving_funcs[0] = resolving_funcs[0]; req->resolving_funcs[1] = resolving_funcs[1]; list_add_tail(&req->link, &s->queue); if (s->state != JS_ASYNC_GENERATOR_STATE_EXECUTING) { js_async_generator_resume_next(ctx, s); } return promise; fail: JS_FreeValue(ctx, resolving_funcs[0]); JS_FreeValue(ctx, resolving_funcs[1]); JS_FreeValue(ctx, promise); return JS_EXCEPTION; } static JSValue js_async_generator_function_call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj, int argc, JSValueConst *argv, int flags) { JSValue obj, func_ret; JSAsyncGeneratorData *s; s = js_mallocz(ctx, sizeof(*s)); if (!s) return JS_EXCEPTION; s->state = JS_ASYNC_GENERATOR_STATE_SUSPENDED_START; init_list_head(&s->queue); if (async_func_init(ctx, &s->func_state, func_obj, this_obj, argc, argv)) { s->state = JS_ASYNC_GENERATOR_STATE_COMPLETED; goto fail; } /* execute the function up to 'OP_initial_yield' (no yield nor await are possible) */ func_ret = async_func_resume(ctx, &s->func_state); if (JS_IsException(func_ret)) goto fail; JS_FreeValue(ctx, func_ret); obj = js_create_from_ctor(ctx, func_obj, JS_CLASS_ASYNC_GENERATOR); if (JS_IsException(obj)) goto fail; s->generator = JS_VALUE_GET_OBJ(obj); JS_SetOpaqueInternal(obj, s); return obj; fail: js_async_generator_free(ctx->rt, s); return JS_EXCEPTION; } /* JS parser */ enum { TOK_NUMBER = -128, TOK_STRING, TOK_TEMPLATE, TOK_IDENT, TOK_REGEXP, /* warning: order matters (see js_parse_assign_expr) */ TOK_MUL_ASSIGN, TOK_DIV_ASSIGN, TOK_MOD_ASSIGN, TOK_PLUS_ASSIGN, TOK_MINUS_ASSIGN, TOK_SHL_ASSIGN, TOK_SAR_ASSIGN, TOK_SHR_ASSIGN, TOK_AND_ASSIGN, TOK_XOR_ASSIGN, TOK_OR_ASSIGN, TOK_POW_ASSIGN, TOK_LAND_ASSIGN, TOK_LOR_ASSIGN, TOK_DOUBLE_QUESTION_MARK_ASSIGN, TOK_DEC, TOK_INC, TOK_SHL, TOK_SAR, TOK_SHR, TOK_LT, TOK_LTE, TOK_GT, TOK_GTE, TOK_EQ, TOK_STRICT_EQ, TOK_NEQ, TOK_STRICT_NEQ, TOK_LAND, TOK_LOR, TOK_POW, TOK_ARROW, TOK_ELLIPSIS, TOK_DOUBLE_QUESTION_MARK, TOK_QUESTION_MARK_DOT, TOK_ERROR, TOK_PRIVATE_NAME, TOK_EOF, /* keywords: WARNING: same order as atoms */ TOK_NULL, /* must be first */ TOK_FALSE, TOK_TRUE, TOK_IF, TOK_ELSE, TOK_RETURN, TOK_VAR, TOK_THIS, TOK_DELETE, TOK_VOID, TOK_TYPEOF, TOK_NEW, TOK_IN, TOK_INSTANCEOF, TOK_DO, TOK_WHILE, TOK_FOR, TOK_BREAK, TOK_CONTINUE, TOK_SWITCH, TOK_CASE, TOK_DEFAULT, TOK_THROW, TOK_TRY, TOK_CATCH, TOK_FINALLY, TOK_FUNCTION, TOK_DEBUGGER, TOK_WITH, /* FutureReservedWord */ TOK_CLASS, TOK_CONST, TOK_ENUM, TOK_EXPORT, TOK_EXTENDS, TOK_IMPORT, TOK_SUPER, /* FutureReservedWords when parsing strict mode code */ TOK_IMPLEMENTS, TOK_INTERFACE, TOK_LET, TOK_PACKAGE, TOK_PRIVATE, TOK_PROTECTED, TOK_PUBLIC, TOK_STATIC, TOK_YIELD, TOK_AWAIT, /* must be last */ TOK_OF, /* only used for js_parse_skip_parens_token() */ }; #define TOK_FIRST_KEYWORD TOK_NULL #define TOK_LAST_KEYWORD TOK_AWAIT /* unicode code points */ #define CP_NBSP 0x00a0 #define CP_BOM 0xfeff #define CP_LS 0x2028 #define CP_PS 0x2029 typedef struct BlockEnv { struct BlockEnv *prev; JSAtom label_name; /* JS_ATOM_NULL if none */ int label_break; /* -1 if none */ int label_cont; /* -1 if none */ int drop_count; /* number of stack elements to drop */ int label_finally; /* -1 if none */ int scope_level; uint8_t has_iterator : 1; uint8_t is_regular_stmt : 1; // i.e. not a loop statement } BlockEnv; typedef struct JSGlobalVar { int cpool_idx; /* if >= 0, index in the constant pool for hoisted function defintion*/ uint8_t force_init : 1; /* force initialization to undefined */ uint8_t is_lexical : 1; /* global let/const definition */ uint8_t is_const : 1; /* const definition */ int scope_level; /* scope of definition */ JSAtom var_name; /* variable name */ } JSGlobalVar; typedef struct RelocEntry { struct RelocEntry *next; uint32_t addr; /* address to patch */ int size; /* address size: 1, 2 or 4 bytes */ } RelocEntry; typedef struct JumpSlot { int op; int size; int pos; int label; } JumpSlot; typedef struct LabelSlot { int ref_count; int pos; /* phase 1 address, -1 means not resolved yet */ int pos2; /* phase 2 address, -1 means not resolved yet */ int addr; /* phase 3 address, -1 means not resolved yet */ RelocEntry *first_reloc; } LabelSlot; typedef struct SourceLocSlot { uint32_t pc; int line_num; int col_num; } SourceLocSlot; typedef enum JSParseFunctionEnum { JS_PARSE_FUNC_STATEMENT, JS_PARSE_FUNC_VAR, JS_PARSE_FUNC_EXPR, JS_PARSE_FUNC_ARROW, JS_PARSE_FUNC_GETTER, JS_PARSE_FUNC_SETTER, JS_PARSE_FUNC_METHOD, JS_PARSE_FUNC_CLASS_STATIC_INIT, JS_PARSE_FUNC_CLASS_CONSTRUCTOR, JS_PARSE_FUNC_DERIVED_CLASS_CONSTRUCTOR, } JSParseFunctionEnum; typedef enum JSParseExportEnum { JS_PARSE_EXPORT_NONE, JS_PARSE_EXPORT_NAMED, JS_PARSE_EXPORT_DEFAULT, } JSParseExportEnum; typedef struct JSFunctionDef { JSContext *ctx; struct JSFunctionDef *parent; int parent_cpool_idx; /* index in the constant pool of the parent or -1 if none */ int parent_scope_level; /* scope level in parent at point of definition */ struct list_head child_list; /* list of JSFunctionDef.link */ struct list_head link; bool is_eval; /* true if eval code */ int eval_type; /* only valid if is_eval = true */ bool is_global_var; /* true if variables are not defined locally: eval global, eval module or non strict eval */ bool is_func_expr; /* true if function expression */ bool has_home_object; /* true if the home object is available */ bool has_prototype; /* true if a prototype field is necessary */ bool has_simple_parameter_list; bool has_parameter_expressions; /* if true, an argument scope is created */ bool has_use_strict; /* to reject directive in special cases */ bool has_eval_call; /* true if the function contains a call to eval() */ bool has_arguments_binding; /* true if the 'arguments' binding is available in the function */ bool has_this_binding; /* true if the 'this' and new.target binding are available in the function */ bool new_target_allowed; /* true if the 'new.target' does not throw a syntax error */ bool super_call_allowed; /* true if super() is allowed */ bool super_allowed; /* true if super. or super[] is allowed */ bool arguments_allowed; /* true if the 'arguments' identifier is allowed */ bool is_derived_class_constructor; bool in_function_body; bool backtrace_barrier; JSFunctionKindEnum func_kind : 8; JSParseFunctionEnum func_type : 7; uint8_t is_strict_mode : 1; JSAtom func_name; /* JS_ATOM_NULL if no name */ JSVarDef *vars; uint32_t *vars_htab; // indexes into vars[] int var_size; /* allocated size for vars[] */ int var_count; JSVarDef *args; int arg_size; /* allocated size for args[] */ int arg_count; /* number of arguments */ int defined_arg_count; int var_object_idx; /* -1 if none */ int arg_var_object_idx; /* -1 if none (var object for the argument scope) */ int arguments_var_idx; /* -1 if none */ int arguments_arg_idx; /* argument variable definition in argument scope, -1 if none */ int func_var_idx; /* variable containing the current function (-1 if none, only used if is_func_expr is true) */ int eval_ret_idx; /* variable containing the return value of the eval, -1 if none */ int this_var_idx; /* variable containg the 'this' value, -1 if none */ int new_target_var_idx; /* variable containg the 'new.target' value, -1 if none */ int this_active_func_var_idx; /* variable containg the 'this.active_func' value, -1 if none */ int home_object_var_idx; bool need_home_object; int scope_level; /* index into fd->scopes if the current lexical scope */ int scope_first; /* index into vd->vars of first lexically scoped variable */ int scope_size; /* allocated size of fd->scopes array */ int scope_count; /* number of entries used in the fd->scopes array */ JSVarScope *scopes; JSVarScope def_scope_array[4]; int body_scope; /* scope of the body of the function or eval */ int global_var_count; int global_var_size; JSGlobalVar *global_vars; DynBuf byte_code; int last_opcode_pos; /* -1 if no last opcode */ bool use_short_opcodes; /* true if short opcodes are used in byte_code */ LabelSlot *label_slots; int label_size; /* allocated size for label_slots[] */ int label_count; BlockEnv *top_break; /* break/continue label stack */ /* constant pool (strings, functions, numbers) */ JSValue *cpool; int cpool_count; int cpool_size; /* list of variables in the closure */ int closure_var_count; int closure_var_size; JSClosureVar *closure_var; JumpSlot *jump_slots; int jump_size; int jump_count; SourceLocSlot *source_loc_slots; int source_loc_size; int source_loc_count; int line_number_last; int line_number_last_pc; int col_number_last; /* pc2line table */ JSAtom filename; int line_num; int col_num; DynBuf pc2line; char *source; /* raw source, utf-8 encoded */ int source_len; JSModuleDef *module; /* != NULL when parsing a module */ bool has_await; /* true if await is used (used in module eval) */ } JSFunctionDef; typedef struct JSToken { int val; int line_num; /* line number of token start */ int col_num; /* column number of token start */ const uint8_t *ptr; union { struct { JSValue str; int sep; } str; struct { JSValue val; } num; struct { JSAtom atom; bool has_escape; bool is_reserved; } ident; struct { JSValue body; JSValue flags; } regexp; } u; } JSToken; typedef struct JSParseState { JSContext *ctx; int last_line_num; /* line number of last token */ int last_col_num; /* column number of last token */ int line_num; /* line number of current offset */ int col_num; /* column number of current offset */ const char *filename; JSToken token; bool got_lf; /* true if got line feed before the current token */ const uint8_t *last_ptr; const uint8_t *buf_start; const uint8_t *buf_ptr; const uint8_t *buf_end; const uint8_t *eol; // most recently seen end-of-line character const uint8_t *mark; // first token character, invariant: eol < mark /* current function code */ JSFunctionDef *cur_func; bool is_module; /* parsing a module */ bool allow_html_comments; } JSParseState; typedef struct JSOpCode { #ifdef ENABLE_DUMPS // JS_DUMP_BYTECODE_* const char *name; #endif uint8_t size; /* in bytes */ /* the opcodes remove n_pop items from the top of the stack, then pushes n_push items */ uint8_t n_pop; uint8_t n_push; uint8_t fmt; } JSOpCode; static const JSOpCode opcode_info[OP_COUNT + (OP_TEMP_END - OP_TEMP_START)] = { #define FMT(f) #ifdef ENABLE_DUMPS // JS_DUMP_BYTECODE_* #define DEF(id, size, n_pop, n_push, f) { #id, size, n_pop, n_push, OP_FMT_ ## f }, #else #define DEF(id, size, n_pop, n_push, f) { size, n_pop, n_push, OP_FMT_ ## f }, #endif /* * QuickJS opcode definitions * * Copyright (c) 2017-2018 Fabrice Bellard * Copyright (c) 2017-2018 Charlie Gordon * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifdef FMT FMT(none) FMT(none_int) FMT(none_loc) FMT(none_arg) FMT(none_var_ref) FMT(u8) FMT(i8) FMT(loc8) FMT(const8) FMT(label8) FMT(u16) FMT(i16) FMT(label16) FMT(npop) FMT(npopx) FMT(npop_u16) FMT(loc) FMT(arg) FMT(var_ref) FMT(u32) FMT(u32x2) FMT(i32) FMT(const) FMT(label) FMT(atom) FMT(atom_u8) FMT(atom_u16) FMT(atom_label_u8) FMT(atom_label_u16) FMT(label_u16) #undef FMT #endif /* FMT */ #ifdef DEF #ifndef def #define def(id, size, n_pop, n_push, f) DEF(id, size, n_pop, n_push, f) #endif DEF(invalid, 1, 0, 0, none) /* never emitted */ /* push values */ DEF( push_i32, 5, 0, 1, i32) DEF( push_const, 5, 0, 1, const) DEF( fclosure, 5, 0, 1, const) /* must follow push_const */ DEF(push_atom_value, 5, 0, 1, atom) DEF( private_symbol, 5, 0, 1, atom) DEF( undefined, 1, 0, 1, none) DEF( null, 1, 0, 1, none) DEF( push_this, 1, 0, 1, none) /* only used at the start of a function */ DEF( push_false, 1, 0, 1, none) DEF( push_true, 1, 0, 1, none) DEF( object, 1, 0, 1, none) DEF( special_object, 2, 0, 1, u8) /* only used at the start of a function */ DEF( rest, 3, 0, 1, u16) /* only used at the start of a function */ DEF( drop, 1, 1, 0, none) /* a -> */ DEF( nip, 1, 2, 1, none) /* a b -> b */ DEF( nip1, 1, 3, 2, none) /* a b c -> b c */ DEF( dup, 1, 1, 2, none) /* a -> a a */ DEF( dup1, 1, 2, 3, none) /* a b -> a a b */ DEF( dup2, 1, 2, 4, none) /* a b -> a b a b */ DEF( dup3, 1, 3, 6, none) /* a b c -> a b c a b c */ DEF( insert2, 1, 2, 3, none) /* obj a -> a obj a (dup_x1) */ DEF( insert3, 1, 3, 4, none) /* obj prop a -> a obj prop a (dup_x2) */ DEF( insert4, 1, 4, 5, none) /* this obj prop a -> a this obj prop a */ DEF( perm3, 1, 3, 3, none) /* obj a b -> a obj b */ DEF( perm4, 1, 4, 4, none) /* obj prop a b -> a obj prop b */ DEF( perm5, 1, 5, 5, none) /* this obj prop a b -> a this obj prop b */ DEF( swap, 1, 2, 2, none) /* a b -> b a */ DEF( swap2, 1, 4, 4, none) /* a b c d -> c d a b */ DEF( rot3l, 1, 3, 3, none) /* x a b -> a b x */ DEF( rot3r, 1, 3, 3, none) /* a b x -> x a b */ DEF( rot4l, 1, 4, 4, none) /* x a b c -> a b c x */ DEF( rot5l, 1, 5, 5, none) /* x a b c d -> a b c d x */ DEF(call_constructor, 3, 2, 1, npop) /* func new.target args -> ret. arguments are not counted in n_pop */ DEF( call, 3, 1, 1, npop) /* arguments are not counted in n_pop */ DEF( tail_call, 3, 1, 0, npop) /* arguments are not counted in n_pop */ DEF( call_method, 3, 2, 1, npop) /* arguments are not counted in n_pop */ DEF(tail_call_method, 3, 2, 0, npop) /* arguments are not counted in n_pop */ DEF( array_from, 3, 0, 1, npop) /* arguments are not counted in n_pop */ DEF( apply, 3, 3, 1, u16) DEF( return, 1, 1, 0, none) DEF( return_undef, 1, 0, 0, none) DEF(check_ctor_return, 1, 1, 2, none) DEF( check_ctor, 1, 0, 0, none) DEF( init_ctor, 1, 0, 1, none) DEF( check_brand, 1, 2, 2, none) /* this_obj func -> this_obj func */ DEF( add_brand, 1, 2, 0, none) /* this_obj home_obj -> */ DEF( return_async, 1, 1, 0, none) DEF( throw, 1, 1, 0, none) DEF( throw_error, 6, 0, 0, atom_u8) DEF( eval, 5, 1, 1, npop_u16) /* func args... -> ret_val */ DEF( apply_eval, 3, 2, 1, u16) /* func array -> ret_eval */ DEF( regexp, 1, 2, 1, none) /* create a RegExp object from the pattern and a bytecode string */ DEF( get_super, 1, 1, 1, none) DEF( import, 1, 1, 1, none) /* dynamic module import */ DEF( check_var, 5, 0, 1, atom) /* check if a variable exists */ DEF( get_var_undef, 5, 0, 1, atom) /* push undefined if the variable does not exist */ DEF( get_var, 5, 0, 1, atom) /* throw an exception if the variable does not exist */ DEF( put_var, 5, 1, 0, atom) /* must come after get_var */ DEF( put_var_init, 5, 1, 0, atom) /* must come after put_var. Used to initialize a global lexical variable */ DEF( put_var_strict, 5, 2, 0, atom) /* for strict mode variable write */ DEF( get_ref_value, 1, 2, 3, none) DEF( put_ref_value, 1, 3, 0, none) DEF( define_var, 6, 0, 0, atom_u8) DEF(check_define_var, 6, 0, 0, atom_u8) DEF( define_func, 6, 1, 0, atom_u8) // order matters, see IC counterparts DEF( get_field, 5, 1, 1, atom) DEF( get_field2, 5, 1, 2, atom) DEF( put_field, 5, 2, 0, atom) DEF( get_private_field, 1, 2, 1, none) /* obj prop -> value */ DEF( put_private_field, 1, 3, 0, none) /* obj value prop -> */ DEF(define_private_field, 1, 3, 1, none) /* obj prop value -> obj */ DEF( get_array_el, 1, 2, 1, none) DEF( get_array_el2, 1, 2, 2, none) /* obj prop -> obj value */ DEF( put_array_el, 1, 3, 0, none) DEF(get_super_value, 1, 3, 1, none) /* this obj prop -> value */ DEF(put_super_value, 1, 4, 0, none) /* this obj prop value -> */ DEF( define_field, 5, 2, 1, atom) DEF( set_name, 5, 1, 1, atom) DEF(set_name_computed, 1, 2, 2, none) DEF( set_proto, 1, 2, 1, none) DEF(set_home_object, 1, 2, 2, none) DEF(define_array_el, 1, 3, 2, none) DEF( append, 1, 3, 2, none) /* append enumerated object, update length */ DEF(copy_data_properties, 2, 3, 3, u8) DEF( define_method, 6, 2, 1, atom_u8) DEF(define_method_computed, 2, 3, 1, u8) /* must come after define_method */ DEF( define_class, 6, 2, 2, atom_u8) /* parent ctor -> ctor proto */ DEF( define_class_computed, 6, 3, 3, atom_u8) /* field_name parent ctor -> field_name ctor proto (class with computed name) */ DEF( get_loc, 3, 0, 1, loc) DEF( put_loc, 3, 1, 0, loc) /* must come after get_loc */ DEF( set_loc, 3, 1, 1, loc) /* must come after put_loc */ DEF( get_arg, 3, 0, 1, arg) DEF( put_arg, 3, 1, 0, arg) /* must come after get_arg */ DEF( set_arg, 3, 1, 1, arg) /* must come after put_arg */ DEF( get_var_ref, 3, 0, 1, var_ref) DEF( put_var_ref, 3, 1, 0, var_ref) /* must come after get_var_ref */ DEF( set_var_ref, 3, 1, 1, var_ref) /* must come after put_var_ref */ DEF(set_loc_uninitialized, 3, 0, 0, loc) DEF( get_loc_check, 3, 0, 1, loc) DEF( put_loc_check, 3, 1, 0, loc) /* must come after get_loc_check */ DEF( put_loc_check_init, 3, 1, 0, loc) DEF(get_var_ref_check, 3, 0, 1, var_ref) DEF(put_var_ref_check, 3, 1, 0, var_ref) /* must come after get_var_ref_check */ DEF(put_var_ref_check_init, 3, 1, 0, var_ref) DEF( close_loc, 3, 0, 0, loc) DEF( if_false, 5, 1, 0, label) DEF( if_true, 5, 1, 0, label) /* must come after if_false */ DEF( goto, 5, 0, 0, label) /* must come after if_true */ DEF( catch, 5, 0, 1, label) DEF( gosub, 5, 0, 0, label) /* used to execute the finally block */ DEF( ret, 1, 1, 0, none) /* used to return from the finally block */ DEF( nip_catch, 1, 2, 1, none) /* catch ... a -> a */ DEF( to_object, 1, 1, 1, none) //DEF( to_string, 1, 1, 1, none) DEF( to_propkey, 1, 1, 1, none) DEF( to_propkey2, 1, 2, 2, none) DEF( with_get_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_put_var, 10, 2, 1, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_delete_var, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_make_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF( with_get_ref, 10, 1, 0, atom_label_u8) /* must be in the same order as scope_xxx */ DEF(with_get_ref_undef, 10, 1, 0, atom_label_u8) DEF( make_loc_ref, 7, 0, 2, atom_u16) DEF( make_arg_ref, 7, 0, 2, atom_u16) DEF(make_var_ref_ref, 7, 0, 2, atom_u16) DEF( make_var_ref, 5, 0, 2, atom) DEF( for_in_start, 1, 1, 1, none) DEF( for_of_start, 1, 1, 3, none) DEF(for_await_of_start, 1, 1, 3, none) DEF( for_in_next, 1, 1, 3, none) DEF( for_of_next, 2, 3, 5, u8) DEF(iterator_check_object, 1, 1, 1, none) DEF(iterator_get_value_done, 1, 1, 2, none) DEF( iterator_close, 1, 3, 0, none) DEF( iterator_next, 1, 4, 4, none) DEF( iterator_call, 2, 4, 5, u8) DEF( initial_yield, 1, 0, 0, none) DEF( yield, 1, 1, 2, none) DEF( yield_star, 1, 1, 2, none) DEF(async_yield_star, 1, 1, 2, none) DEF( await, 1, 1, 1, none) /* arithmetic/logic operations */ DEF( neg, 1, 1, 1, none) DEF( plus, 1, 1, 1, none) DEF( dec, 1, 1, 1, none) DEF( inc, 1, 1, 1, none) DEF( post_dec, 1, 1, 2, none) DEF( post_inc, 1, 1, 2, none) DEF( dec_loc, 2, 0, 0, loc8) DEF( inc_loc, 2, 0, 0, loc8) DEF( add_loc, 2, 1, 0, loc8) DEF( not, 1, 1, 1, none) DEF( lnot, 1, 1, 1, none) DEF( typeof, 1, 1, 1, none) DEF( delete, 1, 2, 1, none) DEF( delete_var, 5, 0, 1, atom) /* warning: order matters (see js_parse_assign_expr) */ DEF( mul, 1, 2, 1, none) DEF( div, 1, 2, 1, none) DEF( mod, 1, 2, 1, none) DEF( add, 1, 2, 1, none) DEF( sub, 1, 2, 1, none) DEF( shl, 1, 2, 1, none) DEF( sar, 1, 2, 1, none) DEF( shr, 1, 2, 1, none) DEF( and, 1, 2, 1, none) DEF( xor, 1, 2, 1, none) DEF( or, 1, 2, 1, none) DEF( pow, 1, 2, 1, none) DEF( lt, 1, 2, 1, none) DEF( lte, 1, 2, 1, none) DEF( gt, 1, 2, 1, none) DEF( gte, 1, 2, 1, none) DEF( instanceof, 1, 2, 1, none) DEF( in, 1, 2, 1, none) DEF( eq, 1, 2, 1, none) DEF( neq, 1, 2, 1, none) DEF( strict_eq, 1, 2, 1, none) DEF( strict_neq, 1, 2, 1, none) DEF(is_undefined_or_null, 1, 1, 1, none) DEF( private_in, 1, 2, 1, none) /* must be the last non short and non temporary opcode */ DEF( nop, 1, 0, 0, none) /* temporary opcodes: never emitted in the final bytecode */ def( enter_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( leave_scope, 3, 0, 0, u16) /* emitted in phase 1, removed in phase 2 */ def( label, 5, 0, 0, label) /* emitted in phase 1, removed in phase 3 */ def(scope_get_var_undef, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_put_var, 7, 1, 0, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_delete_var, 7, 0, 1, atom_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_make_ref, 11, 0, 2, atom_label_u16) /* emitted in phase 1, removed in phase 2 */ def( scope_get_ref, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_put_var_init, 7, 0, 2, atom_u16) /* emitted in phase 1, removed in phase 2 */ def(scope_get_private_field, 7, 1, 1, atom_u16) /* obj -> value, emitted in phase 1, removed in phase 2 */ def(scope_get_private_field2, 7, 1, 2, atom_u16) /* obj -> obj value, emitted in phase 1, removed in phase 2 */ def(scope_put_private_field, 7, 2, 0, atom_u16) /* obj value ->, emitted in phase 1, removed in phase 2 */ def(scope_in_private_field, 7, 1, 1, atom_u16) /* obj -> res emitted in phase 1, removed in phase 2 */ def(get_field_opt_chain, 5, 1, 1, atom) /* emitted in phase 1, removed in phase 2 */ def(get_array_el_opt_chain, 1, 2, 1, none) /* emitted in phase 1, removed in phase 2 */ def( set_class_name, 5, 1, 1, u32) /* emitted in phase 1, removed in phase 2 */ def( source_loc, 9, 0, 0, u32x2) /* emitted in phase 1, removed in phase 3 */ DEF( push_minus1, 1, 0, 1, none_int) DEF( push_0, 1, 0, 1, none_int) DEF( push_1, 1, 0, 1, none_int) DEF( push_2, 1, 0, 1, none_int) DEF( push_3, 1, 0, 1, none_int) DEF( push_4, 1, 0, 1, none_int) DEF( push_5, 1, 0, 1, none_int) DEF( push_6, 1, 0, 1, none_int) DEF( push_7, 1, 0, 1, none_int) DEF( push_i8, 2, 0, 1, i8) DEF( push_i16, 3, 0, 1, i16) DEF( push_const8, 2, 0, 1, const8) DEF( fclosure8, 2, 0, 1, const8) /* must follow push_const8 */ DEF(push_empty_string, 1, 0, 1, none) DEF( get_loc8, 2, 0, 1, loc8) DEF( put_loc8, 2, 1, 0, loc8) DEF( set_loc8, 2, 1, 1, loc8) DEF( get_loc0_loc1, 1, 0, 2, none_loc) DEF( get_loc0, 1, 0, 1, none_loc) DEF( get_loc1, 1, 0, 1, none_loc) DEF( get_loc2, 1, 0, 1, none_loc) DEF( get_loc3, 1, 0, 1, none_loc) DEF( put_loc0, 1, 1, 0, none_loc) DEF( put_loc1, 1, 1, 0, none_loc) DEF( put_loc2, 1, 1, 0, none_loc) DEF( put_loc3, 1, 1, 0, none_loc) DEF( set_loc0, 1, 1, 1, none_loc) DEF( set_loc1, 1, 1, 1, none_loc) DEF( set_loc2, 1, 1, 1, none_loc) DEF( set_loc3, 1, 1, 1, none_loc) DEF( get_arg0, 1, 0, 1, none_arg) DEF( get_arg1, 1, 0, 1, none_arg) DEF( get_arg2, 1, 0, 1, none_arg) DEF( get_arg3, 1, 0, 1, none_arg) DEF( put_arg0, 1, 1, 0, none_arg) DEF( put_arg1, 1, 1, 0, none_arg) DEF( put_arg2, 1, 1, 0, none_arg) DEF( put_arg3, 1, 1, 0, none_arg) DEF( set_arg0, 1, 1, 1, none_arg) DEF( set_arg1, 1, 1, 1, none_arg) DEF( set_arg2, 1, 1, 1, none_arg) DEF( set_arg3, 1, 1, 1, none_arg) DEF( get_var_ref0, 1, 0, 1, none_var_ref) DEF( get_var_ref1, 1, 0, 1, none_var_ref) DEF( get_var_ref2, 1, 0, 1, none_var_ref) DEF( get_var_ref3, 1, 0, 1, none_var_ref) DEF( put_var_ref0, 1, 1, 0, none_var_ref) DEF( put_var_ref1, 1, 1, 0, none_var_ref) DEF( put_var_ref2, 1, 1, 0, none_var_ref) DEF( put_var_ref3, 1, 1, 0, none_var_ref) DEF( set_var_ref0, 1, 1, 1, none_var_ref) DEF( set_var_ref1, 1, 1, 1, none_var_ref) DEF( set_var_ref2, 1, 1, 1, none_var_ref) DEF( set_var_ref3, 1, 1, 1, none_var_ref) DEF( get_length, 1, 1, 1, none) DEF( if_false8, 2, 1, 0, label8) DEF( if_true8, 2, 1, 0, label8) /* must come after if_false8 */ DEF( goto8, 2, 0, 0, label8) /* must come after if_true8 */ DEF( goto16, 3, 0, 0, label16) DEF( call0, 1, 1, 1, npopx) DEF( call1, 1, 1, 1, npopx) DEF( call2, 1, 1, 1, npopx) DEF( call3, 1, 1, 1, npopx) DEF( is_undefined, 1, 1, 1, none) DEF( is_null, 1, 1, 1, none) DEF(typeof_is_undefined, 1, 1, 1, none) DEF( typeof_is_function, 1, 1, 1, none) #undef DEF #undef def #endif /* DEF */ #undef DEF #undef FMT }; /* After the final compilation pass, short opcodes are used. Their opcodes overlap with the temporary opcodes which cannot appear in the final bytecode. Their description is after the temporary opcodes in opcode_info[]. */ #define short_opcode_info(op) \ opcode_info[(op) >= OP_TEMP_START ? \ (op) + (OP_TEMP_END - OP_TEMP_START) : (op)] static __exception int next_token(JSParseState *s); static void free_token(JSParseState *s, JSToken *token) { switch(token->val) { case TOK_NUMBER: JS_FreeValue(s->ctx, token->u.num.val); break; case TOK_STRING: case TOK_TEMPLATE: JS_FreeValue(s->ctx, token->u.str.str); break; case TOK_REGEXP: JS_FreeValue(s->ctx, token->u.regexp.body); JS_FreeValue(s->ctx, token->u.regexp.flags); break; case TOK_IDENT: case TOK_PRIVATE_NAME: JS_FreeAtom(s->ctx, token->u.ident.atom); break; default: if (token->val >= TOK_FIRST_KEYWORD && token->val <= TOK_LAST_KEYWORD) { JS_FreeAtom(s->ctx, token->u.ident.atom); } break; } } static void __attribute((unused)) dump_token(JSParseState *s, const JSToken *token) { printf("%d:%d ", token->line_num, token->col_num); switch(token->val) { case TOK_NUMBER: { double d; JS_ToFloat64(s->ctx, &d, token->u.num.val); /* no exception possible */ printf("number: %.14g\n", d); } break; case TOK_IDENT: dump_atom: { char buf[ATOM_GET_STR_BUF_SIZE]; printf("ident: '%s'\n", JS_AtomGetStr(s->ctx, buf, sizeof(buf), token->u.ident.atom)); } break; case TOK_STRING: { const char *str; /* XXX: quote the string */ str = JS_ToCString(s->ctx, token->u.str.str); printf("string: '%s'\n", str); JS_FreeCString(s->ctx, str); } break; case TOK_TEMPLATE: { const char *str; str = JS_ToCString(s->ctx, token->u.str.str); printf("template: `%s`\n", str); JS_FreeCString(s->ctx, str); } break; case TOK_REGEXP: { const char *str, *str2; str = JS_ToCString(s->ctx, token->u.regexp.body); str2 = JS_ToCString(s->ctx, token->u.regexp.flags); printf("regexp: '%s' '%s'\n", str, str2); JS_FreeCString(s->ctx, str); JS_FreeCString(s->ctx, str2); } break; case TOK_EOF: printf("eof\n"); break; default: if (s->token.val >= TOK_NULL && s->token.val <= TOK_LAST_KEYWORD) { goto dump_atom; } else if (s->token.val >= 256) { printf("token: %d\n", token->val); } else { printf("token: '%c'\n", token->val); } break; } } int JS_PRINTF_FORMAT_ATTR(2, 3) js_parse_error(JSParseState *s, JS_PRINTF_FORMAT const char *fmt, ...) { JSContext *ctx = s->ctx; va_list ap; int backtrace_flags; va_start(ap, fmt); JS_ThrowError2(ctx, JS_SYNTAX_ERROR, false, fmt, ap); va_end(ap); backtrace_flags = 0; if (s->cur_func && s->cur_func->backtrace_barrier) backtrace_flags = JS_BACKTRACE_FLAG_SINGLE_LEVEL; build_backtrace(ctx, ctx->rt->current_exception, JS_UNDEFINED, s->filename, s->line_num, s->col_num, backtrace_flags); return -1; } static int js_parse_expect(JSParseState *s, int tok) { char buf[ATOM_GET_STR_BUF_SIZE]; if (s->token.val == tok) return next_token(s); switch(s->token.val) { case TOK_EOF: return js_parse_error(s, "Unexpected end of input"); case TOK_NUMBER: return js_parse_error(s, "Unexpected number"); case TOK_STRING: return js_parse_error(s, "Unexpected string"); case TOK_TEMPLATE: return js_parse_error(s, "Unexpected string template"); case TOK_REGEXP: return js_parse_error(s, "Unexpected regexp"); case TOK_IDENT: return js_parse_error(s, "Unexpected identifier '%s'", JS_AtomGetStr(s->ctx, buf, sizeof(buf), s->token.u.ident.atom)); case TOK_ERROR: return js_parse_error(s, "Invalid or unexpected token"); default: return js_parse_error(s, "Unexpected token '%.*s'", (int)(s->buf_ptr - s->token.ptr), (const char *)s->token.ptr); } } static int js_parse_expect_semi(JSParseState *s) { if (s->token.val != ';') { /* automatic insertion of ';' */ if (s->token.val == TOK_EOF || s->token.val == '}' || s->got_lf) { return 0; } return js_parse_error(s, "expecting '%c'", ';'); } return next_token(s); } static int js_parse_error_reserved_identifier(JSParseState *s) { char buf1[ATOM_GET_STR_BUF_SIZE]; return js_parse_error(s, "'%s' is a reserved identifier", JS_AtomGetStr(s->ctx, buf1, sizeof(buf1), s->token.u.ident.atom)); } static __exception int js_parse_template_part(JSParseState *s, const uint8_t *p) { const uint8_t *p_next; uint32_t c; StringBuffer b_s, *b = &b_s; /* p points to the first byte of the template part */ if (string_buffer_init(s->ctx, b, 32)) goto fail; for(;;) { if (p >= s->buf_end) goto unexpected_eof; c = *p++; if (c == '`') { /* template end part */ break; } if (c == '$' && *p == '{') { /* template start or middle part */ p++; break; } if (c == '\\') { if (string_buffer_putc8(b, c)) goto fail; if (p >= s->buf_end) goto unexpected_eof; c = *p++; } /* newline sequences are normalized as single '\n' bytes */ if (c == '\r') { if (*p == '\n') p++; c = '\n'; } if (c == '\n') { s->line_num++; s->eol = &p[-1]; s->mark = p; } else if (c >= 0x80) { c = utf8_decode(p - 1, &p_next); if (p_next == p) { js_parse_error(s, "invalid UTF-8 sequence"); goto fail; } p = p_next; } if (string_buffer_putc(b, c)) goto fail; } s->token.val = TOK_TEMPLATE; s->token.u.str.sep = c; s->token.u.str.str = string_buffer_end(b); s->buf_ptr = p; return 0; unexpected_eof: js_parse_error(s, "unexpected end of string"); fail: string_buffer_free(b); return -1; } static __exception int js_parse_string(JSParseState *s, int sep, bool do_throw, const uint8_t *p, JSToken *token, const uint8_t **pp) { const uint8_t *p_next; int ret; uint32_t c; StringBuffer b_s, *b = &b_s; /* string */ if (string_buffer_init(s->ctx, b, 32)) goto fail; for(;;) { if (p >= s->buf_end) goto invalid_char; c = *p; if (c < 0x20) { if (sep == '`') { if (c == '\r') { if (p[1] == '\n') p++; c = '\n'; } /* do not update s->line_num */ } else if (c == '\n' || c == '\r') goto invalid_char; } p++; if (c == sep) break; if (c == '$' && *p == '{' && sep == '`') { /* template start or middle part */ p++; break; } if (c == '\\') { c = *p; switch(c) { case '\0': if (p >= s->buf_end) { if (sep != '`') goto invalid_char; if (do_throw) js_parse_error(s, "Unexpected end of input"); goto fail; } p++; break; case '\'': case '\"': case '\\': p++; break; case '\r': /* accept DOS and MAC newline sequences */ if (p[1] == '\n') { p++; } /* fall thru */ case '\n': /* ignore escaped newline sequence */ p++; if (sep != '`') { s->line_num++; s->eol = &p[-1]; s->mark = p; } continue; default: if (c == '0' && !(p[1] >= '0' && p[1] <= '9')) { /* accept isolated \0 */ p++; c = '\0'; } else if ((c >= '0' && c <= '9') && (s->cur_func->is_strict_mode || sep == '`')) { if (do_throw) { js_parse_error(s, "%s are not allowed in %s", (c >= '8') ? "\\8 and \\9" : "Octal escape sequences", (sep == '`') ? "template strings" : "strict mode"); } goto fail; } else if (c >= 0x80) { c = utf8_decode(p, &p_next); if (p_next == p + 1) { goto invalid_utf8; } p = p_next; /* LS or PS are skipped */ if (c == CP_LS || c == CP_PS) continue; } else { ret = lre_parse_escape(&p, true); if (ret == -1) { if (do_throw) { js_parse_error(s, "Invalid %s escape sequence", c == 'u' ? "Unicode" : "hexadecimal"); } goto fail; } else if (ret < 0) { /* ignore the '\' (could output a warning) */ p++; } else { c = ret; } } break; } } else if (c >= 0x80) { c = utf8_decode(p - 1, &p_next); if (p_next == p) goto invalid_utf8; p = p_next; } if (string_buffer_putc(b, c)) goto fail; } token->val = TOK_STRING; token->u.str.sep = c; token->u.str.str = string_buffer_end(b); *pp = p; return 0; invalid_utf8: if (do_throw) js_parse_error(s, "invalid UTF-8 sequence"); goto fail; invalid_char: if (do_throw) js_parse_error(s, "unexpected end of string"); fail: string_buffer_free(b); return -1; } static inline bool token_is_pseudo_keyword(JSParseState *s, JSAtom atom) { return s->token.val == TOK_IDENT && s->token.u.ident.atom == atom && !s->token.u.ident.has_escape; } static __exception int js_parse_regexp(JSParseState *s) { const uint8_t *p, *p_next; bool in_class; StringBuffer b_s, *b = &b_s; StringBuffer b2_s, *b2 = &b2_s; uint32_t c; p = s->buf_ptr; p++; in_class = false; if (string_buffer_init(s->ctx, b, 32)) return -1; if (string_buffer_init(s->ctx, b2, 1)) goto fail; for(;;) { if (p >= s->buf_end) { eof_error: js_parse_error(s, "unexpected end of regexp"); goto fail; } c = *p++; if (c == '\n' || c == '\r') { goto eol_error; } else if (c == '/') { if (!in_class) break; } else if (c == '[') { in_class = true; } else if (c == ']') { /* XXX: incorrect as the first character in a class */ in_class = false; } else if (c == '\\') { if (string_buffer_putc8(b, c)) goto fail; c = *p++; if (c == '\n' || c == '\r') goto eol_error; else if (c == '\0' && p >= s->buf_end) goto eof_error; else if (c >= 0x80) { c = utf8_decode(p - 1, &p_next); if (p_next == p) { goto invalid_utf8; } p = p_next; if (c == CP_LS || c == CP_PS) goto eol_error; } } else if (c >= 0x80) { c = utf8_decode(p - 1, &p_next); if (p_next == p) { invalid_utf8: js_parse_error(s, "invalid UTF-8 sequence"); goto fail; } p = p_next; /* LS or PS are considered as line terminator */ if (c == CP_LS || c == CP_PS) { eol_error: js_parse_error(s, "unexpected line terminator in regexp"); goto fail; } } if (string_buffer_putc(b, c)) goto fail; } /* flags */ for(;;) { c = utf8_decode(p, &p_next); /* no need to test for invalid UTF-8, 0xFFFD is not ident_next */ if (!lre_js_is_ident_next(c)) break; if (string_buffer_putc(b2, c)) goto fail; p = p_next; } s->token.val = TOK_REGEXP; s->token.u.regexp.body = string_buffer_end(b); s->token.u.regexp.flags = string_buffer_end(b2); s->buf_ptr = p; return 0; fail: string_buffer_free(b); string_buffer_free(b2); return -1; } static __exception int ident_realloc(JSContext *ctx, char **pbuf, size_t *psize, char *static_buf) { char *buf, *new_buf; size_t size, new_size; buf = *pbuf; size = *psize; if (size >= (SIZE_MAX / 3) * 2) new_size = SIZE_MAX; else new_size = size + (size >> 1); if (buf == static_buf) { new_buf = js_malloc(ctx, new_size); if (!new_buf) return -1; memcpy(new_buf, buf, size); } else { new_buf = js_realloc(ctx, buf, new_size); if (!new_buf) return -1; } *pbuf = new_buf; *psize = new_size; return 0; } /* convert a TOK_IDENT to a keyword when needed */ static void update_token_ident(JSParseState *s) { if (s->token.u.ident.atom <= JS_ATOM_LAST_KEYWORD || (s->token.u.ident.atom <= JS_ATOM_LAST_STRICT_KEYWORD && s->cur_func->is_strict_mode) || (s->token.u.ident.atom == JS_ATOM_yield && ((s->cur_func->func_kind & JS_FUNC_GENERATOR) || (s->cur_func->func_type == JS_PARSE_FUNC_ARROW && !s->cur_func->in_function_body && s->cur_func->parent && (s->cur_func->parent->func_kind & JS_FUNC_GENERATOR)))) || (s->token.u.ident.atom == JS_ATOM_await && (s->is_module || (s->cur_func->func_kind & JS_FUNC_ASYNC) || s->cur_func->func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT || (s->cur_func->func_type == JS_PARSE_FUNC_ARROW && !s->cur_func->in_function_body && s->cur_func->parent && ((s->cur_func->parent->func_kind & JS_FUNC_ASYNC) || s->cur_func->parent->func_type == JS_PARSE_FUNC_CLASS_STATIC_INIT))))) { if (s->token.u.ident.has_escape) { s->token.u.ident.is_reserved = true; s->token.val = TOK_IDENT; } else { /* The keywords atoms are pre allocated */ s->token.val = s->token.u.ident.atom - 1 + TOK_FIRST_KEYWORD; } } } /* if the current token is an identifier or keyword, reparse it according to the current function type */ static void reparse_ident_token(JSParseState *s) { if (s->token.val == TOK_IDENT || (s->token.val >= TOK_FIRST_KEYWORD && s->token.val <= TOK_LAST_KEYWORD)) { s->token.val = TOK_IDENT; s->token.u.ident.is_reserved = false; update_token_ident(s); } } /* 'c' is the first character. Return JS_ATOM_NULL in case of error */ static JSAtom parse_ident(JSParseState *s, const uint8_t **pp, bool *pident_has_escape, int c, bool is_private) { const uint8_t *p, *p_next; char ident_buf[128], *buf; size_t ident_size, ident_pos; JSAtom atom = JS_ATOM_NULL; p = *pp; buf = ident_buf; ident_size = sizeof(ident_buf); ident_pos = 0; if (is_private) buf[ident_pos++] = '#'; for(;;) { if (c < 0x80) { buf[ident_pos++] = c; } else { ident_pos += utf8_encode((uint8_t*)buf + ident_pos, c); } c = *p; p_next = p + 1; if (c == '\\' && *p_next == 'u') { c = lre_parse_escape(&p_next, true); *pident_has_escape = true; } else if (c >= 0x80) { c = utf8_decode(p, &p_next); /* no need to test for invalid UTF-8, 0xFFFD is not ident_next */ } if (!lre_js_is_ident_next(c)) break; p = p_next; if (unlikely(ident_pos >= ident_size - UTF8_CHAR_LEN_MAX)) { if (ident_realloc(s->ctx, &buf, &ident_size, ident_buf)) goto done; } } /* buf is pure ASCII or UTF-8 encoded */ atom = JS_NewAtomLen(s->ctx, buf, ident_pos); done: if (unlikely(buf != ident_buf)) js_free(s->ctx, buf); *pp = p; return atom; } static __exception int next_token(JSParseState *s) { const uint8_t *p, *p_next; int c; bool ident_has_escape; JSAtom atom; int flags, radix; if (js_check_stack_overflow(s->ctx->rt, 1000)) { JS_ThrowStackOverflow(s->ctx); return -1; } free_token(s, &s->token); p = s->last_ptr = s->buf_ptr; s->got_lf = false; s->last_line_num = s->token.line_num; s->last_col_num = s->token.col_num; redo: s->token.line_num = s->line_num; s->token.col_num = s->col_num; s->token.ptr = p; c = *p; switch(c) { case 0: if (p >= s->buf_end) { s->token.val = TOK_EOF; } else { goto def_token; } break; case '`': if (js_parse_template_part(s, p + 1)) goto fail; p = s->buf_ptr; break; case '\'': case '\"': if (js_parse_string(s, c, true, p + 1, &s->token, &p)) goto fail; break; case '\r': /* accept DOS and MAC newline sequences */ if (p[1] == '\n') { p++; } /* fall thru */ case '\n': p++; line_terminator: s->eol = &p[-1]; s->mark = p; s->got_lf = true; s->line_num++; goto redo; case '\f': case '\v': case ' ': case '\t': s->mark = ++p; goto redo; case '/': if (p[1] == '*') { /* comment */ p += 2; for(;;) { if (*p == '\0' && p >= s->buf_end) { js_parse_error(s, "unexpected end of comment"); goto fail; } if (p[0] == '*' && p[1] == '/') { p += 2; break; } if (*p == '\n') { s->line_num++; s->got_lf = true; /* considered as LF for ASI */ s->eol = p++; s->mark = p; } else if (*p == '\r') { s->got_lf = true; /* considered as LF for ASI */ p++; } else if (*p >= 0x80) { c = utf8_decode(p, &p); /* ignore invalid UTF-8 in comments */ if (c == CP_LS || c == CP_PS) { s->got_lf = true; /* considered as LF for ASI */ } } else { p++; } } s->mark = p; goto redo; } else if (p[1] == '/') { /* line comment */ p += 2; skip_line_comment: for(;;) { if (*p == '\0' && p >= s->buf_end) break; if (*p == '\r' || *p == '\n') break; if (*p >= 0x80) { c = utf8_decode(p, &p); /* ignore invalid UTF-8 in comments */ /* LS or PS are considered as line terminator */ if (c == CP_LS || c == CP_PS) { break; } } else { p++; } } s->mark = p; goto redo; } else if (p[1] == '=') { p += 2; s->token.val = TOK_DIV_ASSIGN; } else { p++; s->token.val = c; } break; case '\\': if (p[1] == 'u') { const uint8_t *p1 = p + 1; int c1 = lre_parse_escape(&p1, true); if (c1 >= 0 && lre_js_is_ident_first(c1)) { c = c1; p = p1; ident_has_escape = true; goto has_ident; } else { /* XXX: syntax error? */ } } goto def_token; case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u': case 'v': case 'w': case 'x': case 'y': case 'z': case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': case 'Y': case 'Z': case '_': case '$': /* identifier */ s->mark = p; p++; ident_has_escape = false; has_ident: atom = parse_ident(s, &p, &ident_has_escape, c, false); if (atom == JS_ATOM_NULL) goto fail; s->token.u.ident.atom = atom; s->token.u.ident.has_escape = ident_has_escape; s->token.u.ident.is_reserved = false; s->token.val = TOK_IDENT; update_token_ident(s); break; case '#': /* private name */ { p++; c = *p; p_next = p + 1; if (c == '\\' && *p_next == 'u') { c = lre_parse_escape(&p_next, true); } else if (c >= 0x80) { c = utf8_decode(p, &p_next); if (p_next == p + 1) goto invalid_utf8; } if (!lre_js_is_ident_first(c)) { js_parse_error(s, "invalid first character of private name"); goto fail; } p = p_next; ident_has_escape = false; /* not used */ atom = parse_ident(s, &p, &ident_has_escape, c, true); if (atom == JS_ATOM_NULL) goto fail; s->token.u.ident.atom = atom; s->token.val = TOK_PRIVATE_NAME; } break; case '.': if (p[1] == '.' && p[2] == '.') { p += 3; s->token.val = TOK_ELLIPSIS; break; } if (p[1] >= '0' && p[1] <= '9') { flags = ATOD_ACCEPT_UNDERSCORES | ATOD_ACCEPT_FLOAT; radix = 10; goto parse_number; } goto def_token; case '0': if (is_digit(p[1])) { /* handle legacy octal */ if (s->cur_func->is_strict_mode) { js_parse_error(s, "Octal literals are not allowed in strict mode"); goto fail; } /* Legacy octal: no separators, no suffix, no floats, base 8 unless non octal digits are detected */ flags = 0; radix = 8; while (is_digit(*p)) { if (*p >= '8' && *p <= '9') radix = 10; p++; } p = s->token.ptr; goto parse_number; } if (p[1] == '_') { js_parse_error(s, "Numeric separator can not be used after leading 0"); goto fail; } flags = ATOD_ACCEPT_HEX_PREFIX | ATOD_ACCEPT_BIN_OCT | ATOD_ACCEPT_FLOAT | ATOD_ACCEPT_UNDERSCORES | ATOD_ACCEPT_SUFFIX; radix = 10; goto parse_number; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': /* number */ { JSValue ret; const char *p1; flags = ATOD_ACCEPT_FLOAT | ATOD_ACCEPT_UNDERSCORES | ATOD_ACCEPT_SUFFIX; radix = 10; parse_number: p1 = (const char *)p; ret = js_atof(s->ctx, p1, s->buf_end - p, &p1, radix, flags); p = (const uint8_t *)p1; if (JS_IsException(ret)) goto fail; /* reject `10instanceof Number` */ if (JS_VALUE_IS_NAN(ret) || lre_js_is_ident_next(utf8_decode(p, &p_next))) { JS_FreeValue(s->ctx, ret); js_parse_error(s, "invalid number literal"); goto fail; } s->token.val = TOK_NUMBER; s->token.u.num.val = ret; } break; case '*': if (p[1] == '=') { p += 2; s->token.val = TOK_MUL_ASSIGN; } else if (p[1] == '*') { if (p[2] == '=') { p += 3; s->token.val = TOK_POW_ASSIGN; } else { p += 2; s->token.val = TOK_POW; } } else { goto def_token; } break; case '%': if (p[1] == '=') { p += 2; s->token.val = TOK_MOD_ASSIGN; } else { goto def_token; } break; case '+': if (p[1] == '=') { p += 2; s->token.val = TOK_PLUS_ASSIGN; } else if (p[1] == '+') { p += 2; s->token.val = TOK_INC; } else { goto def_token; } break; case '-': if (p[1] == '=') { p += 2; s->token.val = TOK_MINUS_ASSIGN; } else if (p[1] == '-') { if (s->allow_html_comments && p[2] == '>' && (s->got_lf || s->last_ptr == s->buf_start)) { /* Annex B: `-->` at beginning of line is an html comment end. It extends to the end of the line. */ goto skip_line_comment; } p += 2; s->token.val = TOK_DEC; } else { goto def_token; } break; case '<': if (p[1] == '=') { p += 2; s->token.val = TOK_LTE; } else if (p[1] == '<') { if (p[2] == '=') { p += 3; s->token.val = TOK_SHL_ASSIGN; } else { p += 2; s->token.val = TOK_SHL; } } else if (s->allow_html_comments && p[1] == '!' && p[2] == '-' && p[3] == '-') { /* Annex B: handle `