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/* Copyright 2015-2018 Egor Yusov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
#ifdef _DEBUG
class LuaStackHeightTracker
{
public:
LuaStackHeightTracker( lua_State *L ) :
m_L( L ),
m_StackTop(0)
{
Record();
}
void Record()
{
m_StackTop = lua_gettop( m_L );
}
void Check(int Adjustment = 0)
{
auto CurrHeight = lua_gettop( m_L );
VERIFY( CurrHeight == m_StackTop + Adjustment, "Unexpected stack height" );
}
private:
lua_State *m_L;
int m_StackTop;
};
#define INIT_LUA_STACK_TRACKING(L) LuaStackHeightTracker LuaStackHeightTracker(L)
#define RECORD_LUA_STACK_HEIGHT() LuaStackHeightTracker.Record()
#define CHECK_LUA_STACK_HEIGHT(...) LuaStackHeightTracker.Check(__VA_ARGS__)
#else
#define INIT_LUA_STACK_TRACKING(L)
#define RECORD_LUA_STACK_HEIGHT()
#define CHECK_LUA_STACK_HEIGHT(...)
#endif
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