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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 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