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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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