src/libjin-lua/common/l_reference.cpp


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#include "common/je_lua.h"

#include "l_reference.h"

namespace JinEngine
{
	namespace Lua
	{

		LuaRef::LuaRef(lua_State* L, int i)
			: mL(L)
		{
			// Get value.
			luax_pushvalue(mL, i);
			// Set reference.
			luax_getreferencestable(L);
			luax_pushvalue(mL, -2);
			mIndex = luax_ref(mL, -2);
			luax_pop(L, 3);
		}

		LuaRef::~LuaRef()
		{
			unref();
		}

		void LuaRef::unref()
		{
			luax_getreferencestable(mL);
			luax_unref(mL, -1, mIndex);
			luax_pop(mL, 1);
		}

		void LuaRef::push()
		{
			luax_getreferencestable(mL);
			luax_rawgeti(mL, -1, mIndex);
			luax_remove(mL, -2);
		}

	}
}