1 | |
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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 | // The following can also be defined: when detected our implementation is greatly simplified. |
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36 | // Note that unlike the macros above these do not have default definitions, so we can use |
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37 | // #ifdef MACRONAME to detect when these are available. |
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38 | // |
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39 | // BOOST_IS_ABSTRACT(T) true if T is an abstract type |
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40 | // BOOST_IS_BASE_OF(T,U) true if T is a base class of U |
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41 | // BOOST_IS_CLASS(T) true if T is a class type |
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42 | // BOOST_IS_CONVERTIBLE(T,U) true if T is convertible to U |
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43 | // BOOST_IS_ENUM(T) true is T is an enum |
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44 | // BOOST_IS_POLYMORPHIC(T) true if T is a polymorphic type |
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45 | // BOOST_ALIGNMENT_OF(T) should evaluate to the alignment requirements of type T. |
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46 | |
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47 | #ifdef BOOST_HAS_SGI_TYPE_TRAITS |
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48 | // Hook into SGI's __type_traits class, this will pick up user supplied |
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49 | // specializations as well as SGI - compiler supplied specializations. |
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50 | # include <boost/type_traits/is_same.hpp> |
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51 | # ifdef __NetBSD__ |
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52 | // There are two different versions of type_traits.h on NetBSD on Spark |
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53 | // use an implicit include via algorithm instead, to make sure we get |
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54 | // the same version as the std lib: |
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55 | # include <algorithm> |
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56 | # else |
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57 | # include <type_traits.h> |
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58 | # endif |
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59 | # define BOOST_IS_POD(T) ::boost::is_same< typename ::__type_traits<T>::is_POD_type, ::__true_type>::value |
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60 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_default_constructor, ::__true_type>::value |
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61 | # define BOOST_HAS_TRIVIAL_COPY(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_copy_constructor, ::__true_type>::value |
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62 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_assignment_operator, ::__true_type>::value |
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63 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_destructor, ::__true_type>::value |
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64 | |
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65 | # ifdef __sgi |
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66 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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67 | # endif |
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68 | #endif |
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69 | |
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70 | #if defined(__MSL_CPP__) && (__MSL_CPP__ >= 0x8000) |
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71 | // Metrowerks compiler is acquiring intrinsic type traits support |
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72 | // post version 8. We hook into the published interface to pick up |
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73 | // user defined specializations as well as compiler intrinsics as |
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74 | // and when they become available: |
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75 | # include <msl_utility> |
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76 | # define BOOST_IS_UNION(T) BOOST_STD_EXTENSION_NAMESPACE::is_union<T>::value |
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77 | # define BOOST_IS_POD(T) BOOST_STD_EXTENSION_NAMESPACE::is_POD<T>::value |
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78 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_default_ctor<T>::value |
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79 | # define BOOST_HAS_TRIVIAL_COPY(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_copy_ctor<T>::value |
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80 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_assignment<T>::value |
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81 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_dtor<T>::value |
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82 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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83 | #endif |
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84 | |
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85 | #if defined(BOOST_MSVC) && defined(BOOST_MSVC_FULL_VER) && (BOOST_MSVC_FULL_VER >=140050215) |
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86 | # include <boost/type_traits/is_same.hpp> |
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87 | |
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88 | # define BOOST_IS_UNION(T) __is_union(T) |
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89 | # define BOOST_IS_POD(T) (__is_pod(T) && __has_trivial_constructor(T)) |
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90 | # define BOOST_IS_EMPTY(T) __is_empty(T) |
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91 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T) |
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92 | # define BOOST_HAS_TRIVIAL_COPY(T) __has_trivial_copy(T) |
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93 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) __has_trivial_assign(T) |
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94 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) |
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95 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) __has_nothrow_constructor(T) |
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96 | # define BOOST_HAS_NOTHROW_COPY(T) __has_nothrow_copy(T) |
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97 | # define BOOST_HAS_NOTHROW_ASSIGN(T) __has_nothrow_assign(T) |
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98 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) |
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99 | |
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100 | # define BOOST_IS_ABSTRACT(T) __is_abstract(T) |
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101 | # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) |
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102 | # define BOOST_IS_CLASS(T) __is_class(T) |
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103 | // This one doesn't quite always do the right thing: |
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104 | // # define BOOST_IS_CONVERTIBLE(T,U) __is_convertible_to(T,U) |
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105 | # define BOOST_IS_ENUM(T) __is_enum(T) |
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106 | // This one doesn't quite always do the right thing: |
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107 | // # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) |
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108 | // This one fails if the default alignment has been changed with /Zp: |
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109 | // # define BOOST_ALIGNMENT_OF(T) __alignof(T) |
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110 | |
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111 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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112 | #endif |
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113 | |
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114 | #if defined(__DMC__) && (__DMC__ >= 0x848) |
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115 | // For Digital Mars C++, www.digitalmars.com |
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116 | # define BOOST_IS_UNION(T) (__typeinfo(T) & 0x400) |
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117 | # define BOOST_IS_POD(T) (__typeinfo(T) & 0x800) |
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118 | # define BOOST_IS_EMPTY(T) (__typeinfo(T) & 0x1000) |
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119 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) (__typeinfo(T) & 0x10) |
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120 | # define BOOST_HAS_TRIVIAL_COPY(T) (__typeinfo(T) & 0x20) |
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121 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__typeinfo(T) & 0x40) |
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122 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__typeinfo(T) & 0x8) |
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123 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__typeinfo(T) & 0x80) |
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124 | # define BOOST_HAS_NOTHROW_COPY(T) (__typeinfo(T) & 0x100) |
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125 | # define BOOST_HAS_NOTHROW_ASSIGN(T) (__typeinfo(T) & 0x200) |
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126 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) (__typeinfo(T) & 0x4) |
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127 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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128 | #endif |
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129 | |
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130 | #if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3) && !defined(__GCCXML__))) |
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131 | # include <boost/type_traits/is_same.hpp> |
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132 | # include <boost/type_traits/is_reference.hpp> |
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133 | # include <boost/type_traits/is_volatile.hpp> |
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134 | |
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135 | # define BOOST_IS_UNION(T) __is_union(T) |
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136 | # define BOOST_IS_POD(T) __is_pod(T) |
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137 | # define BOOST_IS_EMPTY(T) __is_empty(T) |
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138 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T) |
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139 | # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy(T) && !is_reference<T>::value) |
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140 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) __has_trivial_assign(T) |
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141 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) |
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142 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) __has_nothrow_constructor(T) |
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143 | # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy(T) && !is_volatile<T>::value && !is_reference<T>::value) |
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144 | # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) && !is_volatile<T>::value) |
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145 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) |
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146 | |
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147 | # define BOOST_IS_ABSTRACT(T) __is_abstract(T) |
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148 | # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) |
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149 | # define BOOST_IS_CLASS(T) __is_class(T) |
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150 | # define BOOST_IS_ENUM(T) __is_enum(T) |
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151 | # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) |
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152 | # if (!defined(unix) && !defined(__unix__)) || defined(__LP64__) |
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153 | // GCC sometimes lies about alignment requirements |
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154 | // of type double on 32-bit unix platforms, use the |
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155 | // old implementation instead in that case: |
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156 | # define BOOST_ALIGNMENT_OF(T) __alignof__(T) |
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157 | # endif |
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158 | |
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159 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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160 | #endif |
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161 | |
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162 | # if defined(__CODEGEARC__) |
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163 | # include <boost/type_traits/is_same.hpp> |
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164 | # include <boost/type_traits/is_reference.hpp> |
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165 | # include <boost/type_traits/is_volatile.hpp> |
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166 | # include <boost/type_traits/is_void.hpp> |
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167 | |
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168 | # define BOOST_IS_UNION(T) __is_union(T) |
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169 | # define BOOST_IS_POD(T) __is_pod(T) |
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170 | # define BOOST_IS_EMPTY(T) __is_empty(T) |
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171 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) (__has_trivial_default_constructor(T) || is_void<T>::value) |
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172 | # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy_constructor(T) && !is_volatile<T>::value && !is_reference<T>::value || is_void<T>::value) |
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173 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__has_trivial_assign(T) && !is_volatile<T>::value || is_void<T>::value) |
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174 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__has_trivial_destructor(T) || is_void<T>::value) |
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175 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__has_nothrow_default_constructor(T) || is_void<T>::value) |
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176 | # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy_constructor(T) && !is_volatile<T>::value && !is_reference<T>::value || is_void<T>::value) |
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177 | # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) && !is_volatile<T>::value || is_void<T>::value) |
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178 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) |
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179 | |
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180 | # define BOOST_IS_ABSTRACT(T) __is_abstract(T) |
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181 | # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_void<T>::value && !is_void<U>::value) |
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182 | # define BOOST_IS_CLASS(T) __is_class(T) |
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183 | # define BOOST_IS_CONVERTIBLE(T,U) (__is_convertible(T,U) || is_void<U>::value) |
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184 | # define BOOST_IS_ENUM(T) __is_enum(T) |
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185 | # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) |
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186 | # define BOOST_ALIGNMENT_OF(T) alignof(T) |
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187 | |
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188 | # define BOOST_HAS_TYPE_TRAITS_INTRINSICS |
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189 | #endif |
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190 | |
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191 | #ifndef BOOST_IS_UNION |
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192 | # define BOOST_IS_UNION(T) false |
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193 | #endif |
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194 | |
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195 | #ifndef BOOST_IS_POD |
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196 | # define BOOST_IS_POD(T) false |
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197 | #endif |
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198 | |
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199 | #ifndef BOOST_IS_EMPTY |
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200 | # define BOOST_IS_EMPTY(T) false |
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201 | #endif |
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202 | |
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203 | #ifndef BOOST_HAS_TRIVIAL_CONSTRUCTOR |
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204 | # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) false |
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205 | #endif |
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206 | |
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207 | #ifndef BOOST_HAS_TRIVIAL_COPY |
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208 | # define BOOST_HAS_TRIVIAL_COPY(T) false |
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209 | #endif |
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210 | |
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211 | #ifndef BOOST_HAS_TRIVIAL_ASSIGN |
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212 | # define BOOST_HAS_TRIVIAL_ASSIGN(T) false |
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213 | #endif |
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214 | |
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215 | #ifndef BOOST_HAS_TRIVIAL_DESTRUCTOR |
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216 | # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) false |
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217 | #endif |
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218 | |
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219 | #ifndef BOOST_HAS_NOTHROW_CONSTRUCTOR |
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220 | # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) false |
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221 | #endif |
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222 | |
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223 | #ifndef BOOST_HAS_NOTHROW_COPY |
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224 | # define BOOST_HAS_NOTHROW_COPY(T) false |
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225 | #endif |
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226 | |
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227 | #ifndef BOOST_HAS_NOTHROW_ASSIGN |
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228 | # define BOOST_HAS_NOTHROW_ASSIGN(T) false |
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229 | #endif |
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230 | |
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231 | #ifndef BOOST_HAS_VIRTUAL_DESTRUCTOR |
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232 | # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) false |
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233 | #endif |
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234 | |
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235 | #endif // BOOST_TT_INTRINSICS_HPP_INCLUDED |
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236 | |
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237 | |
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238 | |
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239 | |
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240 | |
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