GDCM  2.4.5
gdcmStaticAssert.h
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1 /*=========================================================================
2 
3  Program: GDCM (Grassroots DICOM). A DICOM library
4 
5  Copyright (c) 2006-2011 Mathieu Malaterre
6  All rights reserved.
7  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
8 
9  This software is distributed WITHOUT ANY WARRANTY; without even
10  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11  PURPOSE. See the above copyright notice for more information.
12 
13 =========================================================================*/
14 #ifndef GDCMSTATICASSERT_H
15 #define GDCMSTATICASSERT_H
16 
17 
18 // the following was shamelessly borowed from BOOST static assert:
19 namespace gdcm
20 {
21  template <bool x>
23 
24  template <>
25  struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
26 
27  template <int x>
28  struct static_assert_test {};
29 }
30 
31 #define GDCM_JOIN( X, Y ) GDCM_DO_JOIN( X, Y )
32 #define GDCM_DO_JOIN( X, Y ) GDCM_DO_JOIN2(X,Y)
33 #define GDCM_DO_JOIN2( X, Y ) X##Y
34 
36 #define GDCM_STATIC_ASSERT( B ) \
37  typedef ::gdcm::static_assert_test<\
38  sizeof(::gdcm::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
39  GDCM_JOIN(gdcm_static_assert_typedef_, __LINE__)
40 
41 
42 /* Example of use:
43  *
44  * template <class T>
45  * struct must_not_be_instantiated
46  * {
47  * // this will be triggered if this type is instantiated
48  * GDCM_STATIC_ASSERT(sizeof(T) == 0);
49  * };
50  *
51  */
52 #endif // GDCMSTATICASSERT_H
Definition: gdcmStaticAssert.h:28
Definition: gdcmStaticAssert.h:22
Definition: gdcmASN1.h:20

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