classrep.h

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/***************************************************************************
 *   Copyright (C) 2004-2005 by Reality Rift Studios                       *
 *   http://www.realityrift.com  -  mattias@realityrift.com                *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef neo_script_lua_classrep_h
#define neo_script_lua_classrep_h

#include "../../core/platform.h"

#if NEO_ENABLE_SCRIPT_LUA

#include "../../core/hashtable.h"
#include "../../core/type.h"
#include "constructor.h"

extern "C" { struct lua_State; }

namespace neo {
namespace script {
namespace lua {

class ClassBase;
class Object;
class ClassRegistry;
class GetSetBase;
class MethodRep;

typedef void ( *Destructor )( void* );

class RuntimeTypeCast
{
    public:
    inline virtual ~RuntimeTypeCast() {};
    virtual ptrdiff_t castPointerOffset( char* p_ptr ) = 0;
    virtual RuntimeTypeCast* clone() = 0;
};

template < class Derived, class Base > class RuntimeTypeCastImpl : public RuntimeTypeCast
{
    public:
    inline virtual ptrdiff_t castPointerOffset( char* p_ptr ) { return core::castPointerOffset< Derived, Base >( reinterpret_cast< Derived* >( p_ptr ) ); }
    virtual RuntimeTypeCast* clone() { return new RuntimeTypeCastImpl; }
};

class BaseClassDesc
{
    public:

    const std::type_info*                                   _p_type;
    int                                                     _offset;
    RuntimeTypeCast*                                        _p_caster;
    ClassRep*                                               _p_crep;
    inline                                                  BaseClassDesc( const std::type_info* p_type = 0, int offset = 0, RuntimeTypeCast* p_caster = 0, ClassRep* p_crep = 0 );
    inline                                                  BaseClassDesc( const BaseClassDesc& desc );
    inline                                                 ~BaseClassDesc();
};

class ClassRep
{
    public:


                                                            ClassRep( lua_State* p_state, const std::type_info* p_type, const char* p_name, Destructor destructor );

                                                           ~ClassRep();


    int                                                     isOfType( const std::type_info* p_type ) const;


    int                                                     getConversionOffset( const std::type_info* p_type, char* p_ptr ) const;

    int                                                     getTable( lua_State* p_state );

    bool                                                    setTable( lua_State* p_state );

    inline const char*                                      getName() const { return _p_name; }
    
    static int                                              dispatchGetTable( lua_State* p_state );

    static int                                              dispatchSetTable( lua_State* p_state );

    static int                                              dispatchOperator( lua_State* p_state );

    static int                                              dispatchConstructor( lua_State* p_state );

    static int                                              dispatchMethod( lua_State* p_state );

    static int                                              getTableStatic( lua_State* p_state );
    int                                                     getTableStaticClass( lua_State* p_state );

    static ClassRep*                                        isClass( lua_State* p_state, int index );
    
    private:

    int                                                     _refSelf;

    const char*                                             _p_name;

    const std::type_info*                                   _p_type;

    core::HashTable< const char*, MethodRep >               _methods;

    core::HashTable< const char*, MethodRep >               _methodsStatic;

    ConstructorRep                                          _ctor;

    core::Array< MethodRep >                                _operators;

    core::HashTable< const char*, GetSetBase* >             _getters;

    core::HashTable< const char*, GetSetBase* >             _setters;

    core::HashTable< const char*, int >                     _enums;

    core::HashTable< const char*, GetSetBase* >             _statics;
    
    core::Array< BaseClassDesc >                            _bases;

    Destructor                                              _dtor;

    friend class ClassBase;
    friend class Object;
    friend class ClassRegistry;
};

#include "classrep.inl"

}
}
}

#endif

#endif

---