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// -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
// vim:tabstop=4:shiftwidth=4:expandtab:
/*
* Copyright (C) 2004-2008 Wu Yongwei <adah at users dot sourceforge dot net>
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute
* it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must
* not claim that you wrote the original software. If you use this
* software in a product, an acknowledgement in the product
* documentation would be appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must
* not be misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source
* distribution.
*
* This file is part of Stones of Nvwa:
* http://sourceforge.net/projects/nvwa
*
*/
/**
* @file static_assert.h
*
* Template class to check validity duing compile time (adapted from Loki).
*
* @version 1.2, 2005/11/22
* @author Wu Yongwei
*
*/
#ifndef STATIC_ASSERT
template <bool> struct __nvwa_compile_time_error;
template <> struct __nvwa_compile_time_error<true> {};
#define STATIC_ASSERT(_Expr, _Msg) \
{ \
__nvwa_compile_time_error<((_Expr) != 0)> ERROR_##_Msg; \
(void)ERROR_##_Msg; \
}
#endif // STATIC_ASSERT
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