// -*- 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 * * original version changed for ManaPlus * * Copyright (C) 2011 ManaPlus developers */ /** * @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