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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on Broken Sword 2.5 engine
*
* Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
*
* Licensed under GNU GPL v2
*
*/
#ifndef SWORD25_LUABINDHELPER_H
#define SWORD25_LUABINDHELPER_H
#include "sword25/kernel/common.h"
#include "common/lua/lua.h"
#include "common/lua/lauxlib.h"
namespace Sword25 {
#define lua_pushbooleancpp(L, b) (lua_pushboolean(L, b ? 1 : 0))
#define lua_tobooleancpp(L, i) (lua_toboolean(L, i) != 0)
struct lua_constant_reg {
const char *Name;
lua_Number Value;
};
class LuaBindhelper {
public:
/**
* Registers a set of functions into a Lua library.
* @param L A pointer to the Lua VM
* @param LibName The name of the library.
* If this is an empty string, the functions will be added to the global namespace.
* @param Functions An array of function pointers along with their names.
* The array must be terminated with the enry (0, 0)
* @return Returns true if successful, otherwise false.
*/
static bool addFunctionsToLib(lua_State *L, const Common::String &libName, const luaL_reg *functions);
/**
* Adds a set of constants to the Lua library
* @param L A pointer to the Lua VM
* @param LibName The name of the library.
* If this is an empty string, the functions will be added to the global namespace.
* @param Constants An array of the constant values along with their names.
* The array must be terminated with the enry (0, 0)
* @return Returns true if successful, otherwise false.
*/
static bool addConstantsToLib(lua_State *L, const Common::String &libName, const lua_constant_reg *constants);
/**
* Adds a set of methods to a Lua class
* @param L A pointer to the Lua VM
* @param ClassName The name of the class
* When the class name specified does not exist, it is created.
* @param Methods An array of function pointers along with their method names.
* The array must be terminated with the enry (0, 0)
* @return Returns true if successful, otherwise false.
*/
static bool addMethodsToClass(lua_State *L, const Common::String &className, const luaL_reg *methods);
/**
* Sets the garbage collector callback method when items of a particular class are deleted
* @param L A pointer to the Lua VM
* @param ClassName The name of the class
* When the class name specified does not exist, it is created.
* @param GCHandler A function pointer
* @return Returns true if successful, otherwise false.
*/
static bool setClassGCHandler(lua_State *L, const Common::String &className, lua_CFunction GCHandler);
/**
* Returns a string containing a stack dump of the Lua stack
* @param L A pointer to the Lua VM
*/
static Common::String stackDump(lua_State *L);
/**
* Returns a string that describes the contents of a table
* @param L A pointer to the Lua VM
* @remark The table must be on the Lua stack to be read out.
*/
static Common::String tableDump(lua_State *L);
static bool getMetatable(lua_State *L, const Common::String &tableName);
static void *my_checkudata(lua_State *L, int ud, const char *tname);
private:
static bool createTable(lua_State *L, const Common::String &tableName);
};
} // End of namespace Sword25
#endif
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