1 | |
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2 | // (C) Copyright John Maddock 2005. |
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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 | |
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10 | #ifndef BOOST_TT_EXTENT_HPP_INCLUDED |
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11 | #define BOOST_TT_EXTENT_HPP_INCLUDED |
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12 | |
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13 | // should be the last #include |
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14 | #include <boost/type_traits/detail/size_t_trait_def.hpp> |
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15 | |
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16 | namespace boost { |
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17 | |
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18 | namespace detail{ |
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19 | |
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20 | #if defined( __CODEGEARC__ ) |
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21 | // wrap the impl as main trait provides additional MPL lambda support |
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22 | template < typename T, std::size_t N > |
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23 | struct extent_imp { |
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24 | static const std::size_t value = __array_extent(T, N); |
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25 | }; |
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26 | |
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27 | #else |
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28 | |
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29 | template <class T, std::size_t N> |
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30 | struct extent_imp |
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31 | { |
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32 | BOOST_STATIC_CONSTANT(std::size_t, value = 0); |
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33 | }; |
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34 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS) |
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35 | template <class T, std::size_t R, std::size_t N> |
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36 | struct extent_imp<T[R], N> |
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37 | { |
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38 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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39 | }; |
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40 | |
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41 | template <class T, std::size_t R, std::size_t N> |
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42 | struct extent_imp<T const[R], N> |
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43 | { |
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44 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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45 | }; |
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46 | |
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47 | template <class T, std::size_t R, std::size_t N> |
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48 | struct extent_imp<T volatile[R], N> |
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49 | { |
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50 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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51 | }; |
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52 | |
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53 | template <class T, std::size_t R, std::size_t N> |
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54 | struct extent_imp<T const volatile[R], N> |
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55 | { |
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56 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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57 | }; |
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58 | |
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59 | template <class T, std::size_t R> |
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60 | struct extent_imp<T[R],0> |
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61 | { |
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62 | BOOST_STATIC_CONSTANT(std::size_t, value = R); |
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63 | }; |
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64 | |
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65 | template <class T, std::size_t R> |
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66 | struct extent_imp<T const[R], 0> |
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67 | { |
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68 | BOOST_STATIC_CONSTANT(std::size_t, value = R); |
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69 | }; |
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70 | |
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71 | template <class T, std::size_t R> |
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72 | struct extent_imp<T volatile[R], 0> |
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73 | { |
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74 | BOOST_STATIC_CONSTANT(std::size_t, value = R); |
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75 | }; |
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76 | |
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77 | template <class T, std::size_t R> |
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78 | struct extent_imp<T const volatile[R], 0> |
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79 | { |
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80 | BOOST_STATIC_CONSTANT(std::size_t, value = R); |
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81 | }; |
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82 | |
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83 | #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) && !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840)) && !defined(__MWERKS__) |
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84 | template <class T, std::size_t N> |
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85 | struct extent_imp<T[], N> |
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86 | { |
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87 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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88 | }; |
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89 | template <class T, std::size_t N> |
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90 | struct extent_imp<T const[], N> |
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91 | { |
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92 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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93 | }; |
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94 | template <class T, std::size_t N> |
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95 | struct extent_imp<T volatile[], N> |
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96 | { |
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97 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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98 | }; |
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99 | template <class T, std::size_t N> |
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100 | struct extent_imp<T const volatile[], N> |
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101 | { |
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102 | BOOST_STATIC_CONSTANT(std::size_t, value = (::boost::detail::extent_imp<T, N-1>::value)); |
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103 | }; |
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104 | template <class T> |
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105 | struct extent_imp<T[], 0> |
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106 | { |
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107 | BOOST_STATIC_CONSTANT(std::size_t, value = 0); |
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108 | }; |
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109 | template <class T> |
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110 | struct extent_imp<T const[], 0> |
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111 | { |
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112 | BOOST_STATIC_CONSTANT(std::size_t, value = 0); |
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113 | }; |
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114 | template <class T> |
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115 | struct extent_imp<T volatile[], 0> |
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116 | { |
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117 | BOOST_STATIC_CONSTANT(std::size_t, value = 0); |
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118 | }; |
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119 | template <class T> |
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120 | struct extent_imp<T const volatile[], 0> |
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121 | { |
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122 | BOOST_STATIC_CONSTANT(std::size_t, value = 0); |
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123 | }; |
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124 | #endif |
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125 | #endif |
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126 | |
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127 | #endif // non-CodeGear implementation |
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128 | } // ::boost::detail |
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129 | |
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130 | template <class T, std::size_t N = 0> |
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131 | struct extent |
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132 | : public ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value> |
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133 | { |
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134 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) |
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135 | typedef ::boost::integral_constant<std::size_t, ::boost::detail::extent_imp<T,N>::value> base_; |
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136 | using base_::value; |
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137 | #endif |
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138 | BOOST_MPL_AUX_LAMBDA_SUPPORT(1,extent,(T)) |
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139 | }; |
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140 | |
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141 | } // namespace boost |
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142 | |
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143 | #include <boost/type_traits/detail/size_t_trait_undef.hpp> |
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144 | |
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145 | #endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED |
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