csutil/compileassert.h Source File (Crystal Space 2.0 Public API Reference)

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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__