mirror of
https://github.com/love2d/love.git
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rude
71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
/**
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* Copyright (c) 2006-2010 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "Reference.h"
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namespace love
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{
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Reference::Reference()
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: L(0), idx(LUA_REFNIL)
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{
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}
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Reference::Reference(lua_State * L)
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: L(0), idx(LUA_REFNIL)
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{
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ref(L);
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}
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Reference::~Reference()
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{
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unref();
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}
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void Reference::ref(lua_State * L)
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{
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unref(); // Just to be safe.
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this->L = L;
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idx = luaL_ref(L, LUA_GLOBALSINDEX);
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}
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void Reference::unref()
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{
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if(idx != LUA_REFNIL)
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{
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luaL_unref(L, LUA_GLOBALSINDEX, idx);
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idx = LUA_REFNIL;
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}
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}
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void Reference::push()
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{
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if(idx != LUA_REFNIL)
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lua_rawgeti(L, LUA_GLOBALSINDEX, idx);
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else
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lua_pushnil(L);
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}
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lua_State * Reference::getL()
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{
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return L;
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}
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} // love
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