GDCM
2.0.18
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00001 /*========================================================================= 00002 00003 Program: GDCM (Grassroots DICOM). A DICOM library 00004 00005 Copyright (c) 2006-2011 Mathieu Malaterre 00006 All rights reserved. 00007 See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details. 00008 00009 This software is distributed WITHOUT ANY WARRANTY; without even 00010 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 00011 PURPOSE. See the above copyright notice for more information. 00012 00013 =========================================================================*/ 00014 #ifndef GDCMSTATICASSERT_H 00015 #define GDCMSTATICASSERT_H 00016 00017 00018 // the following was shamelessly borowed from BOOST static assert: 00019 namespace gdcm 00020 { 00021 template <bool x> 00022 struct STATIC_ASSERTION_FAILURE; 00023 00024 template <> 00025 struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; }; 00026 00027 template <int x> 00028 struct static_assert_test {}; 00029 } 00030 00031 #define GDCM_JOIN( X, Y ) GDCM_DO_JOIN( X, Y ) 00032 #define GDCM_DO_JOIN( X, Y ) GDCM_DO_JOIN2(X,Y) 00033 #define GDCM_DO_JOIN2( X, Y ) X##Y 00034 00036 #define GDCM_STATIC_ASSERT( B ) \ 00037 typedef ::gdcm::static_assert_test<\ 00038 sizeof(::gdcm::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\ 00039 GDCM_JOIN(gdcm_static_assert_typedef_, __LINE__) 00040 00041 00042 /* Example of use: 00043 * 00044 * template <class T> 00045 * struct must_not_be_instantiated 00046 * { 00047 * // this will be triggered if this type is instantiated 00048 * GDCM_STATIC_ASSERT(sizeof(T) == 0); 00049 * }; 00050 * 00051 */ 00052 #endif // GDCMSTATICASSERT_H