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/*
* LuaReference.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "LuaReference.h"
VCMI_LIB_NAMESPACE_BEGIN
namespace scripting
{
LuaReference::LuaReference(lua_State * L)
: l(L),
doCleanup(true)
{
key = luaL_ref(l, LUA_REGISTRYINDEX);
}
LuaReference::LuaReference(LuaReference && other)
: l(other.l),
key(other.key),
doCleanup(false)
{
std::swap(doCleanup, other.doCleanup);
}
LuaReference::~LuaReference()
{
if(doCleanup)
luaL_unref(l, LUA_REGISTRYINDEX, key);
}
void LuaReference::push()
{
lua_rawgeti(l, LUA_REGISTRYINDEX, key);
}
}
VCMI_LIB_NAMESPACE_END
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