l_base.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
#pragma once
 
#include "common/c_types.h"
#include "common/c_internal.h"
#include "common/helper.h"
#include "gamedef.h"
#include <unordered_map>
 
extern "C" {
#include <lua.h>
#include <lauxlib.h>
}
 
#if CHECK_CLIENT_BUILD()
class Client;
class GUIEngine;
#endif
class EmergeThread;
class ScriptApiBase;
class Server;
class Environment;
class ServerInventoryManager;
 
class ModApiBase : protected LuaHelper {
public:
        static ScriptApiBase*   getScriptApiBase(lua_State *L);
        static Server*          getServer(lua_State *L);
        static ServerInventoryManager *getServerInventoryMgr(lua_State *L);
        #if CHECK_CLIENT_BUILD()
        static Client*          getClient(lua_State *L);
        static GUIEngine*       getGuiEngine(lua_State *L);
        #endif // !SERVER
        static EmergeThread*    getEmergeThread(lua_State *L);
 
        static IGameDef*        getGameDef(lua_State *L);
 
        static Environment*     getEnv(lua_State *L);
 
        // When we are not loading the mod, this function returns "."
        static std::string      getCurrentModPath(lua_State *L);
 
        // Get an arbitrary subclass of ScriptApiBase
        // by using dynamic_cast<> on getScriptApiBase()
        template<typename T>
        static T* getScriptApi(lua_State *L) {
                ScriptApiBase *scriptIface = getScriptApiBase(L);
                T *scriptIfaceDowncast = dynamic_cast<T*>(scriptIface);
                if (!scriptIfaceDowncast) {
                        throw LuaError("Requested unavailable ScriptApi - core engine bug!");
                }
                return scriptIfaceDowncast;
        }
 
        static bool registerFunction(lua_State *L,
                        const char* name,
                        lua_CFunction func,
                        int top);
 
        static void registerClass(lua_State *L, const char *name,
                        const luaL_Reg *methods,
                        const luaL_Reg *metamethods);
 
        template<typename T>
        static inline T *checkObject(lua_State *L, int narg)
        {
                return *reinterpret_cast<T**>(luaL_checkudata(L, narg, T::className));
        }
 
        static int l_deprecated_function(lua_State *L, const char *good, const char *bad, lua_CFunction func);
};