CrystalSpace

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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 CS
00026 {
00027 namespace Utility
00028 {
00029 namespace Implementation
00030 {
00031   
00032   template <bool x> 
00033   struct CompileAssertFailure;
00034 
00035   template <> 
00036   struct CompileAssertFailure<true>
00037   {
00038     enum { value = 1};
00039   };
00040 
00041   template <int x>
00042   struct CompileAssertTest
00043   {
00044   };
00045 
00046 } // namespace Implementation
00047 } // namespace Utility
00048 } // namespace CS
00049 
00050 
00051 #define CS_JOIN( X, Y ) CS_DO_JOIN( X, Y )
00052 #define CS_DO_JOIN( X, Y ) CS_DO_JOIN2(X,Y)
00053 #define CS_DO_JOIN2( X, Y ) X##Y
00054 
00055 #define CS_COMPILE_ASSERT(B) \
00056   typedef CS::Utility::Implementation::CompileAssertTest< \
00057     sizeof(CS::Utility::Implementation::CompileAssertFailure<(bool)(B)>)> \
00058     CS_JOIN(CrystalSpaceCompileAssertTypedef, __LINE__)
00059 
00060 
00061 #endif // __CSUTIL_COMPILEASSERT_H__

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