no need for two different implementations for equality (one raw and

one with metamethods)

lapi.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.144 2010/12/29 18:00:23 roberto Exp roberto $
+** $Id: lapi.c,v 2.145 2011/04/05 14:26:23 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -278,7 +278,7 @@ LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {
   StkId o1 = index2addr(L, index1);
   StkId o2 = index2addr(L, index2);
   return (o1 == luaO_nilobject || o2 == luaO_nilobject) ? 0
-         : luaO_rawequalObj(o1, o2);
+         : luaV_rawequalObj(o1, o2);
 }
 
 

lcode.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.c,v 2.53 2011/04/19 16:22:13 roberto Exp roberto $
+** $Id: lcode.c,v 2.54 2011/04/28 14:00:11 roberto Exp roberto $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -23,6 +23,7 @@
 #include "lparser.h"
 #include "lstring.h"
 #include "ltable.h"
+#include "lvm.h"
 
 
 #define hasjumps(e)	((e)->t != (e)->f)
@@ -295,7 +296,7 @@ static int addk (FuncState *fs, TValue *key, TValue *v) {
   if (ttisnumber(idx)) {
     lua_Number n = nvalue(idx);
     lua_number2int(k, n);
-    if (luaO_rawequalObj(&f->k[k], v))
+    if (luaV_rawequalObj(&f->k[k], v))
       return k;
     /* else may be a collision (e.g., between 0.0 and "\0\0\0\0\0\0\0\0");
        go through and create a new entry for this value */

lobject.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 2.47 2011/04/05 18:32:06 roberto Exp roberto $
+** $Id: lobject.c,v 2.48 2011/05/03 16:01:57 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -70,28 +70,6 @@ int luaO_ceillog2 (unsigned int x) {
 }
 
 
-int luaO_rawequalObj (const TValue *t1, const TValue *t2) {
-  if (!ttisequal(t1, t2)) return 0;
-  else switch (ttype(t1)) {
-    case LUA_TNIL:
-      return 1;
-    case LUA_TNUMBER:
-      return luai_numeq(nvalue(t1), nvalue(t2));
-    case LUA_TBOOLEAN:
-      return bvalue(t1) == bvalue(t2);  /* boolean true must be 1 !! */
-    case LUA_TLIGHTUSERDATA:
-      return pvalue(t1) == pvalue(t2);
-    case LUA_TSTRING:
-      return rawtsvalue(t1) == rawtsvalue(t2);
-    case LUA_TLCF:
-      return fvalue(t1) == fvalue(t2);
-    default:
-      lua_assert(iscollectable(t1));
-      return gcvalue(t1) == gcvalue(t2);
-  }
-}
-
-
 lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {
   switch (op) {
     case LUA_OPADD: return luai_numadd(NULL, v1, v2);

lobject.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 2.53 2011/05/05 19:43:14 roberto Exp roberto $
+** $Id: lobject.h,v 2.54 2011/05/26 17:12:31 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -431,11 +431,11 @@ typedef struct Table {
 
 LUAI_DDEC const TValue luaO_nilobject_;
 
+
 LUAI_FUNC int luaO_int2fb (unsigned int x);
 LUAI_FUNC int luaO_fb2int (int x);
 LUAI_FUNC int luaO_ceillog2 (unsigned int x);
 LUAI_FUNC lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2);
-LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
 LUAI_FUNC int luaO_str2d (const char *s, size_t len, lua_Number *result);
 LUAI_FUNC int luaO_hexavalue (int c);
 LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,

ltable.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.c,v 2.54 2011/04/05 18:32:28 roberto Exp roberto $
+** $Id: ltable.c,v 2.55 2011/05/02 16:45:32 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -33,6 +33,7 @@
 #include "lstate.h"
 #include "lstring.h"
 #include "ltable.h"
+#include "lvm.h"
 
 
 /*
@@ -148,7 +149,7 @@ static int findindex (lua_State *L, Table *t, StkId key) {
     Node *n = mainposition(t, key);
     do {  /* check whether `key' is somewhere in the chain */
       /* key may be dead already, but it is ok to use it in `next' */
-      if (luaO_rawequalObj(gkey(n), key) ||
+      if (luaV_rawequalObj(gkey(n), key) ||
             (ttisdeadkey(gkey(n)) && iscollectable(key) &&
              gcvalue(gkey(n)) == gcvalue(key))) {
         i = cast_int(n - gnode(t, 0));  /* key index in hash table */
@@ -481,7 +482,7 @@ const TValue *luaH_get (Table *t, const TValue *key) {
     default: {
       Node *n = mainposition(t, key);
       do {  /* check whether `key' is somewhere in the chain */
-        if (luaO_rawequalObj(gkey(n), key))
+        if (luaV_rawequalObj(gkey(n), key))
           return gval(n);  /* that's it */
         else n = gnext(n);
       } while (n);

lvm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.c,v 2.136 2011/04/19 16:22:13 roberto Exp roberto $
+** $Id: lvm.c,v 2.137 2011/05/05 16:16:33 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -174,7 +174,7 @@ static const TValue *get_equalTM (lua_State *L, Table *mt1, Table *mt2,
   if (mt1 == mt2) return tm1;  /* same metatables => same metamethods */
   tm2 = fasttm(L, mt2, event);
   if (tm2 == NULL) return NULL;  /* no metamethod */
-  if (luaO_rawequalObj(tm1, tm2))  /* same metamethods? */
+  if (luaV_rawequalObj(tm1, tm2))  /* same metamethods? */
     return tm1;
   return NULL;
 }
@@ -237,6 +237,9 @@ int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r) {
 }
 
 
+/*
+** equality of Lua values. L == NULL means raw equality (no metamethods)
+*/
 int luaV_equalval_ (lua_State *L, const TValue *t1, const TValue *t2) {
   const TValue *tm;
   lua_assert(ttisequal(t1, t2));
@@ -249,15 +252,19 @@ int luaV_equalval_ (lua_State *L, const TValue *t1, const TValue *t2) {
     case LUA_TSTRING: return eqstr(rawtsvalue(t1), rawtsvalue(t2));
     case LUA_TUSERDATA: {
       if (uvalue(t1) == uvalue(t2)) return 1;
+      else if (L == NULL) return 0;
       tm = get_equalTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable, TM_EQ);
       break;  /* will try TM */
     }
     case LUA_TTABLE: {
       if (hvalue(t1) == hvalue(t2)) return 1;
+      else if (L == NULL) return 0;
       tm = get_equalTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
       break;  /* will try TM */
     }
-    default: return gcvalue(t1) == gcvalue(t2);
+    default:
+      lua_assert(iscollectable(t1));
+      return gcvalue(t1) == gcvalue(t2);
   }
   if (tm == NULL) return 0;  /* no TM? */
   callTM(L, tm, t1, t2, L->top, 1);  /* call TM */

lvm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.h,v 2.14 2009/12/17 16:20:01 roberto Exp roberto $
+** $Id: lvm.h,v 2.15 2011/04/05 18:32:06 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -19,10 +19,14 @@
 
 #define equalobj(L,o1,o2)  (ttisequal(o1, o2) && luaV_equalval_(L, o1, o2))
 
+#define luaV_rawequalObj(t1,t2)  \
+        (ttisequal(t1,t2) && luaV_equalval_(NULL,t1,t2))
+
 
 /* not to called directly */
 LUAI_FUNC int luaV_equalval_ (lua_State *L, const TValue *t1, const TValue *t2);
 
+
 LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC const TValue *luaV_tonumber (const TValue *obj, TValue *n);