/* * Copyright (c) 2013 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ #pragma once #include <lua.hpp> #include <string> #include <Swiften/Base/Override.h> #include <Sluift/LuaElementConvertor.h> #include <Sluift/Lua/Check.h> #include <Sluift/Lua/LuaUtils.h> namespace Swift { template<typename T> class GenericLuaElementConvertor : public LuaElementConvertor { public: GenericLuaElementConvertor(const std::string& type) : type(type) { } virtual ~GenericLuaElementConvertor() {} virtual boost::shared_ptr<Element> convertFromLua(lua_State* L, int index, const std::string& payloadType) SWIFTEN_OVERRIDE { if (payloadType == type) { Lua::checkType(L, index, LUA_TTABLE); lua_pushvalue(L, index); boost::shared_ptr<Element> result = doConvertFromLua(L); lua_pop(L, 1); return result; } return boost::shared_ptr<Element>(); } virtual boost::optional<std::string> convertToLua( lua_State* L, boost::shared_ptr<Element> payload) SWIFTEN_OVERRIDE { if (boost::shared_ptr<T> actualPayload = boost::dynamic_pointer_cast<T>(payload)) { doConvertToLua(L, actualPayload); assert(lua_type(L, -1) == LUA_TTABLE); return type; } return NO_RESULT; } protected: virtual boost::shared_ptr<T> doConvertFromLua(lua_State*) = 0; virtual void doConvertToLua(lua_State*, boost::shared_ptr<T>) = 0; private: std::string type; }; }