/*-----------------------------------------------------------------------------------------------
The MIT License (MIT)

Copyright (c) 2014-2015 Kim Kulling

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.
-----------------------------------------------------------------------------------------------*/

// Modified by Lasse Oorni for Urho3D

#pragma once

#include <cstddef>
#include <vector>
#include <string>

#include <string.h>
#ifndef _WIN32
#  include <inttypes.h>
#endif 

#ifdef _MSC_VER
#   define TAG_DLL_EXPORT __declspec(dllexport)
#   define TAG_DLL_IMPORT __declspec(dllimport )
#   ifdef OPENDDLPARSER_BUILD
#       define DLL_ODDLPARSER_EXPORT TAG_DLL_EXPORT
#   else
#       define DLL_ODDLPARSER_EXPORT TAG_DLL_IMPORT
#   endif // OPENDDLPARSER_BUILD
#   pragma warning( disable : 4251 )
#else
#   define DLL_ODDLPARSER_EXPORT
#endif // _WIN32

// Namespace declarations, override this to avoid any conflicts
#define BEGIN_ODDLPARSER_NS namespace ODDLParser {
#define END_ODDLPARSER_NS   } // namespace ODDLParser
#define USE_ODDLPARSER_NS   using namespace ODDLParser;

BEGIN_ODDLPARSER_NS

// Urho3D: modified to not use C++11
#define OPENDDL_NO_USE_CPP11

// We will use C++11 optional
#ifndef OPENDDL_NO_USE_CPP11
    // All C++11 constructs
#   define ddl_nullptr nullptr
#else
    // Fallback for older compilers
#   define ddl_nullptr NULL
#endif // OPENDDL_NO_USE_CPP11

class DDLNode;
class Value;

struct Name;
struct Identifier;
struct Reference;
struct Property;
struct DataArrayList;

#ifdef _WIN32
typedef signed __int64    int64_impl;
typedef unsigned __int64  uint64_impl;
#else
typedef int64_t           int64_impl;
typedef uint64_t          uint64_impl;
#endif

// OpenDDL-specific data typedefs
typedef signed char       int8;    ///< Signed integer, 1 byte
typedef signed short      int16;   ///< Signed integer, 2 byte
typedef signed int        int32;   ///< Signed integer, 4 byte
typedef int64_impl        int64;   ///< Signed integer, 8 byte
typedef unsigned char     uint8;   ///< Unsigned integer, 1 byte
typedef unsigned short    uint16;  ///< Unsigned integer, 2 byte
typedef unsigned int      uint32;  ///< Unsigned integer, 4 byte
typedef uint64_impl       uint64;  ///< Unsigned integer, 8 byte

///	@brief  Description of the type of a name.
enum NameType {
    GlobalName, ///< Name is global.
    LocalName   ///< Name is local.
};

///	@brief  Stores a text
struct Text {
    size_t m_capacity;
    size_t m_len;
    char *m_buffer;

    Text( const char *buffer, size_t numChars )
    : m_capacity( 0 )
    , m_len( 0 )
    , m_buffer( ddl_nullptr ) {
        set( buffer, numChars );
    }

    ~Text() {
        clear();
    }

    void clear() {
        delete[] m_buffer;
        m_buffer = ddl_nullptr;
        m_capacity = 0;
        m_len = 0;
    }

    void set( const char *buffer, size_t numChars ) {
        clear();
        if( numChars > 0 ) {
            m_len = numChars;
            m_capacity = m_len + 1;
            m_buffer = new char[ m_capacity ];
            strncpy( m_buffer, buffer, numChars );
            m_buffer[ numChars ] = '\0';
        }
    }

    bool operator == ( const std::string &name ) const {
        if( m_len != name.size() ) {
            return false;
        }
        const int res( strncmp( m_buffer, name.c_str(), name.size() ) );
        
        return ( 0 == res );
    }

    bool operator == ( const Text &rhs ) const {
        if( m_len != rhs.m_len ) {
            return false;
        }

        const int res( strncmp( m_buffer, rhs.m_buffer, m_len ) );
        
        return ( 0 == res );
    }

private:
    Text( const Text & );
    Text &operator = ( const Text & );
};

///	@brief  Stores an OpenDDL-specific identifier type.
struct Identifier {
    Text m_text;

    Identifier( char buffer[], size_t len )
        : m_text( buffer, len ) {
        // empty
    }

    Identifier( char buffer[] )
    : m_text( buffer, strlen( buffer ) ) {
        // empty
    }

    bool operator == ( const Identifier &rhs ) const {
        return m_text == rhs.m_text;
    }

private:
    Identifier( const Identifier & );
    Identifier &operator = ( const Identifier & );
};

///	@brief  Stores an OpenDDL-specific name
struct Name {
    NameType    m_type;
    Identifier *m_id;

    Name( NameType type, Identifier *id )
        : m_type( type )
        , m_id( id ) {
        // empty
    }

private:
    Name( const Name & );
    Name &operator = ( const Name& );
};

///	@brief  Stores a bundle of references.
struct Reference {
    size_t   m_numRefs;
    Name   **m_referencedName;

    Reference()
    : m_numRefs( 0 )
    , m_referencedName( ddl_nullptr ) {
        // empty
    }
     
    Reference( size_t numrefs, Name **names )
    : m_numRefs( numrefs )
    , m_referencedName( ddl_nullptr ) {
        m_referencedName = new Name *[ numrefs ];
        for( size_t i = 0; i < numrefs; i++ ) {
            Name *name = new Name( names[ i ]->m_type, names[ i ]->m_id );
            m_referencedName[ i ] = name;
        }
    }

    ~Reference() {
        for( size_t i = 0; i < m_numRefs; i++ ) {
            delete m_referencedName[ i ];
        }
        m_numRefs = 0;
        m_referencedName = ddl_nullptr;
    }

private:
    Reference( const Reference & );
    Reference &operator = ( const Reference & );
};

///	@brief  Stores a property list.
struct Property {
    Identifier *m_key;
    Value *m_value;
    Reference *m_ref;
    Property *m_next;

    Property( Identifier *id )
    : m_key( id )
    , m_value( ddl_nullptr )
    , m_ref( ddl_nullptr )
    , m_next( ddl_nullptr ) {
        // empty
    }

    ~Property() {
        m_key = ddl_nullptr;
        m_value = ddl_nullptr;
        m_ref = ddl_nullptr;;
        m_next = ddl_nullptr;;
    }

private:
    Property( const Property & );
    Property &operator = ( const Property & );
};

///	@brief  Stores a data array list.
struct DataArrayList {
    size_t m_numItems;
    Value *m_dataList;
    DataArrayList *m_next;

    DataArrayList()
        : m_numItems( 0 )
        , m_dataList( ddl_nullptr )
        , m_next( ddl_nullptr ) {
        // empty
    }

private:
    DataArrayList( const DataArrayList & ); 
    DataArrayList &operator = ( const DataArrayList & );
};

///	@brief  Stores the context of a parsed OpenDDL declaration.
struct Context {
    DDLNode *m_root;

    Context()
        : m_root( ddl_nullptr ) {
        // empty
    }

    ~Context() {
        m_root = ddl_nullptr;
    }

private:
    Context( const Context & );
    Context &operator = ( const Context & );
};

END_ODDLPARSER_NS
