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| 2 | // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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| 3 | // Use, modification and distribution are subject to the Boost Software License,
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| 4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 5 | // http://www.boost.org/LICENSE_1_0.txt).
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| 6 | //
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| 7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation.
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| 8 |
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| 9 | #ifndef BOOST_TT_INTRINSICS_HPP_INCLUDED
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| 10 | #define BOOST_TT_INTRINSICS_HPP_INCLUDED
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| 11 |
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| 12 | #ifndef BOOST_TT_CONFIG_HPP_INCLUDED
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| 13 | #include "boost/type_traits/config.hpp"
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| 14 | #endif
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| 15 |
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| 16 | //
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| 17 | // Helper macros for builtin compiler support.
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| 18 | // If your compiler has builtin support for any of the following
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| 19 | // traits concepts, then redefine the appropriate macros to pick
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| 20 | // up on the compiler support:
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| 21 | //
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| 22 | // (these should largely ignore cv-qualifiers)
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| 23 | // BOOST_IS_UNION(T) should evaluate to true if T is a union type
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| 24 | // BOOST_IS_POD(T) should evaluate to true if T is a POD type
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| 25 | // BOOST_IS_EMPTY(T) should evaluate to true if T is an empty struct or union
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| 26 | // BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) should evaluate to true if "T x;" has no effect
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| 27 | // BOOST_HAS_TRIVIAL_COPY(T) should evaluate to true if T(t) <==> memcpy
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| 28 | // BOOST_HAS_TRIVIAL_ASSIGN(T) should evaluate to true if t = u <==> memcpy
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| 29 | // BOOST_HAS_TRIVIAL_DESTRUCTOR(T) should evaluate to true if ~T() has no effect
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| 30 | // BOOST_HAS_NOTHROW_CONSTRUCTOR(T) should evaluate to true if "T x;" can not throw
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| 31 | // BOOST_HAS_NOTHROW_COPY(T) should evaluate to true if T(t) can not throw
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| 32 | // BOOST_HAS_NOTHROW_ASSIGN(T) should evaluate to true if t = u can not throw
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| 33 | // BOOST_HAS_VIRTUAL_DESTRUCTOR(T) should evaluate to true T has a virtual destructor
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| 34 |
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| 35 | #ifdef BOOST_HAS_SGI_TYPE_TRAITS
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| 36 | // Hook into SGI's __type_traits class, this will pick up user supplied
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| 37 | // specializations as well as SGI - compiler supplied specializations.
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| 38 | # include "boost/type_traits/is_same.hpp"
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| 39 | # include <type_traits.h>
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| 40 | # define BOOST_IS_POD(T) ::boost::is_same< typename ::__type_traits<T>::is_POD_type, ::__true_type>::value
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| 41 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_default_constructor, ::__true_type>::value
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| 42 | # define BOOST_HAS_TRIVIAL_COPY(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_copy_constructor, ::__true_type>::value
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| 43 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_assignment_operator, ::__true_type>::value
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| 44 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_destructor, ::__true_type>::value
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| 45 |
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| 46 | # ifdef __sgi
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| 47 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS
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| 48 | # endif
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| 49 | #endif
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| 50 |
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| 51 | #if defined(__MSL_CPP__) && (__MSL_CPP__ >= 0x8000)
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| 52 | // Metrowerks compiler is acquiring intrinsic type traits support
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| 53 | // post version 8. We hook into the published interface to pick up
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| 54 | // user defined specializations as well as compiler intrinsics as
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| 55 | // and when they become available:
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| 56 | # include <msl_utility>
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| 57 | # define BOOST_IS_UNION(T) BOOST_STD_EXTENSION_NAMESPACE::is_union<T>::value
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| 58 | # define BOOST_IS_POD(T) BOOST_STD_EXTENSION_NAMESPACE::is_POD<T>::value
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| 59 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_default_ctor<T>::value
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| 60 | # define BOOST_HAS_TRIVIAL_COPY(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_copy_ctor<T>::value
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| 61 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_assignment<T>::value
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| 62 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_dtor<T>::value
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| 63 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS
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| 64 | #endif
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| 65 |
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| 66 | #if defined(BOOST_MSVC) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >=140050215)
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| 67 | # define BOOST_IS_UNION(T) __is_union(T)
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| 68 | # define BOOST_IS_POD(T) __is_pod(T)
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| 69 | # define BOOST_IS_EMPTY(T) __is_empty(T)
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| 70 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T)
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| 71 | # define BOOST_HAS_TRIVIAL_COPY(T) __has_trivial_copy(T)
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| 72 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) __has_trivial_assign(T)
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| 73 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T)
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| 74 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) __has_nothrow_constructor(T)
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| 75 | # define BOOST_HAS_NOTHROW_COPY(T) __has_nothrow_copy(T)
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| 76 | # define BOOST_HAS_NOTHROW_ASSIGN(T) __has_nothrow_assign(T)
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| 77 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T)
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| 78 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS
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| 79 | #endif
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| 80 |
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| 81 |
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| 82 | #ifndef BOOST_IS_UNION
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| 83 | # define BOOST_IS_UNION(T) false
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| 84 | #endif
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| 85 |
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| 86 | #ifndef BOOST_IS_POD
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| 87 | # define BOOST_IS_POD(T) false
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| 88 | #endif
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| 89 |
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| 90 | #ifndef BOOST_IS_EMPTY
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| 91 | # define BOOST_IS_EMPTY(T) false
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| 92 | #endif
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| 93 |
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| 94 | #ifndef BOOST_HAS_TRIVIAL_CONSTRUCTOR
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| 95 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) false
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| 96 | #endif
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| 97 |
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| 98 | #ifndef BOOST_HAS_TRIVIAL_COPY
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| 99 | # define BOOST_HAS_TRIVIAL_COPY(T) false
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| 100 | #endif
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| 101 |
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| 102 | #ifndef BOOST_HAS_TRIVIAL_ASSIGN
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| 103 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) false
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| 104 | #endif
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| 105 |
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| 106 | #ifndef BOOST_HAS_TRIVIAL_DESTRUCTOR
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| 107 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) false
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| 108 | #endif
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| 109 |
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| 110 | #ifndef BOOST_HAS_NOTHROW_CONSTRUCTOR
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| 111 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) false
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| 112 | #endif
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| 113 |
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| 114 | #ifndef BOOST_HAS_NOTHROW_COPY
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| 115 | # define BOOST_HAS_NOTHROW_COPY(T) false
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| 116 | #endif
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| 117 |
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| 118 | #ifndef BOOST_HAS_NOTHROW_ASSIGN
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| 119 | # define BOOST_HAS_NOTHROW_ASSIGN(T) false
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| 120 | #endif
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| 121 |
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| 122 | #ifndef BOOST_HAS_VIRTUAL_DESTRUCTOR
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| 123 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) false
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| 124 | #endif
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| 125 |
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| 126 | #endif // BOOST_TT_INTRINSICS_HPP_INCLUDED
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| 127 |
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| 128 |
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| 129 |
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| 130 |
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