CrystalSpace

Public API Reference

csutil/compileassert.h

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00001 /*
00002   Copyright (C) 2006 by Marten Svanfeldt
00003 
00004   This library is free software; you can redistribute it and/or
00005   modify it under the terms of the GNU Library General Public
00006   License as published by the Free Software Foundation; either
00007   version 2 of the License, or (at your option) any later version.
00008 
00009   This library is distributed in the hope that it will be useful,
00010   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012   Library General Public License for more details.
00013 
00014   You should have received a copy of the GNU Library General Public
00015   License along with this library; if not, write to the Free
00016   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CSUTIL_COMPILEASSERT_H__
00020 #define __CSUTIL_COMPILEASSERT_H__
00021 
00025 namespace CrystalSpace
00026 {
00027 
00028 template <bool x> 
00029 struct COMPILE_ASSERT_FAILURE
00030 {
00031 };
00032 
00033 template <> 
00034 struct COMPILE_ASSERT_FAILURE<true>
00035 {
00036   enum { value = 1};
00037 };
00038 
00039 template <int x>
00040 struct CompileAssertTest
00041 {
00042 };
00043 }
00044 
00045 
00046 #define CS_JOIN( X, Y ) CS_DO_JOIN( X, Y )
00047 #define CS_DO_JOIN( X, Y ) CS_DO_JOIN2(X,Y)
00048 #define CS_DO_JOIN2( X, Y ) X##Y
00049 
00050 #define CS_COMPILE_ASSERT(B) \
00051   typedef CrystalSpace::CompileAssertTest< \
00052     sizeof(CrystalSpace::COMPILE_ASSERT_FAILURE<(bool)(B)>)> \
00053     CS_JOIN(CrystalSpaceCompileAssertTypedef, __LINE__)
00054 
00055 
00056 #endif

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