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/*
* Copyright (c) 2013-2017 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#pragma once
#include <string>
#include <lua.hpp>
#include <Sluift/Lua/Check.h>
#include <Sluift/Lua/LuaUtils.h>
#include <Sluift/LuaElementConvertor.h>
namespace Swift {
template<typename T>
class GenericLuaElementConvertor : public LuaElementConvertor {
public:
GenericLuaElementConvertor(const std::string& type) : type(type) {
}
virtual ~GenericLuaElementConvertor() override {}
virtual std::shared_ptr<Element> convertFromLua(lua_State* L, int index, const std::string& payloadType) override {
if (payloadType == type) {
Lua::checkType(L, index, LUA_TTABLE);
lua_pushvalue(L, index);
std::shared_ptr<Element> result = doConvertFromLua(L);
lua_pop(L, 1);
return result;
}
return std::shared_ptr<Element>();
}
virtual boost::optional<std::string> convertToLua(
lua_State* L, std::shared_ptr<Element> payload) override {
if (std::shared_ptr<T> actualPayload = std::dynamic_pointer_cast<T>(payload)) {
doConvertToLua(L, actualPayload);
assert(lua_type(L, -1) == LUA_TTABLE);
return type;
}
return NO_RESULT;
}
protected:
virtual std::shared_ptr<T> doConvertFromLua(lua_State*) = 0;
virtual void doConvertToLua(lua_State*, std::shared_ptr<T>) = 0;
private:
std::string type;
};
}
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