Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations
1 // (C) Copyright John Maddock 2000.
2 // Use, modification and distribution are subject to the
3 // Boost Software License, Version 1.0. (See accompanying file
4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 // See http://www.boost.org/libs/static_assert for documentation.
14 #ifndef BOOST_STATIC_ASSERT_HPP
15 #define BOOST_STATIC_ASSERT_HPP
17 #include <boost/config.hpp>
18 #include <boost/detail/workaround.hpp>
22 // workaround for buggy integral-constant expression support:
23 #define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS
26 #if defined(__GNUC__) && (__GNUC__ == 3) && ((__GNUC_MINOR__ == 3) || (__GNUC_MINOR__ == 4))
27 // gcc 3.3 and 3.4 don't produce good error messages with the default version:
28 # define BOOST_SA_GCC_WORKAROUND
33 // HP aCC cannot deal with missing names for template value parameters
34 template <bool x> struct STATIC_ASSERTION_FAILURE;
36 template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
38 // HP aCC cannot deal with missing names for template value parameters
39 template<int x> struct static_assert_test{};
44 // Implicit instantiation requires that all member declarations be
45 // instantiated, but that the definitions are *not* instantiated.
47 // It's not particularly clear how this applies to enum's or typedefs;
48 // both are described as declarations [7.1.3] and [7.2] in the standard,
49 // however some compilers use "delayed evaluation" of one or more of
50 // these when implicitly instantiating templates. We use typedef declarations
51 // by default, but try defining BOOST_USE_ENUM_STATIC_ASSERT if the enum
52 // version gets better results from your compiler...
55 // Both of these versions rely on sizeof(incomplete_type) generating an error
56 // message containing the name of the incomplete type. We use
57 // "STATIC_ASSERTION_FAILURE" as the type name here to generate
58 // an eye catching error message. The result of the sizeof expression is either
59 // used as an enum initialiser, or as a template argument depending which version
61 // Note that the argument to the assert is explicitly cast to bool using old-
62 // style casts: too many compilers currently have problems with static_cast
63 // when used inside integral constant expressions.
65 #if !defined(BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS)
67 #if defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
68 // __LINE__ macro broken when -ZI is used see Q199057
69 // fortunately MSVC ignores duplicate typedef's.
70 #define BOOST_STATIC_ASSERT( B ) \
71 typedef ::boost::static_assert_test<\
72 sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)\
73 > boost_static_assert_typedef_
74 #elif defined(BOOST_MSVC)
75 #define BOOST_STATIC_ASSERT( B ) \
76 typedef ::boost::static_assert_test<\
77 sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
78 BOOST_JOIN(boost_static_assert_typedef_, __COUNTER__)
79 #elif defined(BOOST_INTEL_CXX_VERSION) || defined(BOOST_SA_GCC_WORKAROUND)
80 // agurt 15/sep/02: a special care is needed to force Intel C++ issue an error
81 // instead of warning in case of failure
82 # define BOOST_STATIC_ASSERT( B ) \
83 typedef char BOOST_JOIN(boost_static_assert_typedef_, __LINE__) \
84 [ ::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >::value ]
86 // special version for SGI MIPSpro compiler
87 #define BOOST_STATIC_ASSERT( B ) \
88 BOOST_STATIC_CONSTANT(bool, \
89 BOOST_JOIN(boost_static_assert_test_, __LINE__) = ( B )); \
90 typedef ::boost::static_assert_test<\
91 sizeof(::boost::STATIC_ASSERTION_FAILURE< \
92 BOOST_JOIN(boost_static_assert_test_, __LINE__) >)>\
93 BOOST_JOIN(boost_static_assert_typedef_, __LINE__)
94 #elif BOOST_WORKAROUND(__MWERKS__, <= 0x3003)
95 // special version for CodeWarrior <= 8.x
96 #define BOOST_STATIC_ASSERT( B ) \
97 BOOST_STATIC_CONSTANT(int, \
98 BOOST_JOIN(boost_static_assert_test_, __LINE__) = \
99 sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >) )
102 #define BOOST_STATIC_ASSERT( B ) \
103 typedef ::boost::static_assert_test<\
104 sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >)>\
105 BOOST_JOIN(boost_static_assert_typedef_, __LINE__)
109 // alternative enum based implementation:
110 #define BOOST_STATIC_ASSERT( B ) \
111 enum { BOOST_JOIN(boost_static_assert_enum_, __LINE__) \
112 = sizeof(::boost::STATIC_ASSERTION_FAILURE< (bool)( B ) >) }
116 #endif // BOOST_STATIC_ASSERT_HPP