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2 | // (C) Copyright Runar Undheim, Robert Ramey & John Maddock 2008.
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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_HAS_NEW_OPERATOR_HPP_INCLUDED
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10 | #define BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
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11 |
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12 | #include <new> // std::nothrow_t
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13 | #include <cstddef> // std::size_t
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14 | #include <boost/type_traits/config.hpp>
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15 | #include <boost/type_traits/detail/yes_no_type.hpp>
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16 | #include <boost/type_traits/detail/ice_or.hpp>
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17 |
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18 | // should be the last #include
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19 | #include <boost/type_traits/detail/bool_trait_def.hpp>
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20 |
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21 | namespace boost {
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22 | namespace detail {
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23 | template <class U, U x>
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24 | struct test;
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25 |
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26 | template <typename T>
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27 | struct has_new_operator_impl {
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28 | template<class U>
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29 | static type_traits::yes_type check_sig1(
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30 | U*,
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31 | test<
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32 | void *(*)(std::size_t),
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33 | &U::operator new
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34 | >* = NULL
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35 | );
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36 | template<class U>
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37 | static type_traits::no_type check_sig1(...);
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38 |
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39 | template<class U>
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40 | static type_traits::yes_type check_sig2(
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41 | U*,
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42 | test<
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43 | void *(*)(std::size_t, const std::nothrow_t&),
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44 | &U::operator new
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45 | >* = NULL
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46 | );
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47 | template<class U>
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48 | static type_traits::no_type check_sig2(...);
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49 |
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50 | template<class U>
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51 | static type_traits::yes_type check_sig3(
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52 | U*,
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53 | test<
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54 | void *(*)(std::size_t, void*),
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55 | &U::operator new
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56 | >* = NULL
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57 | );
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58 | template<class U>
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59 | static type_traits::no_type check_sig3(...);
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60 |
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61 |
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62 | template<class U>
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63 | static type_traits::yes_type check_sig4(
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64 | U*,
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65 | test<
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66 | void *(*)(std::size_t),
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67 | &U::operator new[]
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68 | >* = NULL
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69 | );
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70 | template<class U>
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71 | static type_traits::no_type check_sig4(...);
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72 |
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73 | template<class U>
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74 | static type_traits::yes_type check_sig5(
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75 | U*,
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76 | test<
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77 | void *(*)(std::size_t, const std::nothrow_t&),
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78 | &U::operator new[]
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79 | >* = NULL
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80 | );
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81 | template<class U>
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82 | static type_traits::no_type check_sig5(...);
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83 |
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84 | template<class U>
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85 | static type_traits::yes_type check_sig6(
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86 | U*,
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87 | test<
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88 | void *(*)(std::size_t, void*),
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89 | &U::operator new[]
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90 | >* = NULL
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91 | );
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92 | template<class U>
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93 | static type_traits::no_type check_sig6(...);
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94 |
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95 | // GCC2 won't even parse this template if we embed the computation
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96 | // of s1 in the computation of value.
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97 | #ifdef __GNUC__
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98 | BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(has_new_operator_impl<T>::template check_sig1<T>(0)));
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99 | BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(has_new_operator_impl<T>::template check_sig2<T>(0)));
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100 | BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(has_new_operator_impl<T>::template check_sig3<T>(0)));
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101 | BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(has_new_operator_impl<T>::template check_sig4<T>(0)));
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102 | BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(has_new_operator_impl<T>::template check_sig5<T>(0)));
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103 | BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(has_new_operator_impl<T>::template check_sig6<T>(0)));
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104 | #else
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105 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
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106 | #pragma warning(push)
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107 | #pragma warning(disable:6334)
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108 | #endif
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109 |
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110 | BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(check_sig1<T>(0)));
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111 | BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(check_sig2<T>(0)));
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112 | BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(check_sig3<T>(0)));
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113 | BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(check_sig4<T>(0)));
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114 | BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(check_sig5<T>(0)));
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115 | BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(check_sig6<T>(0)));
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116 |
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117 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
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118 | #pragma warning(pop)
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119 | #endif
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120 | #endif
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121 | BOOST_STATIC_CONSTANT(bool, value =
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122 | (::boost::type_traits::ice_or<
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123 | (s1 == sizeof(type_traits::yes_type)),
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124 | (s2 == sizeof(type_traits::yes_type)),
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125 | (s3 == sizeof(type_traits::yes_type)),
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126 | (s4 == sizeof(type_traits::yes_type)),
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127 | (s5 == sizeof(type_traits::yes_type)),
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128 | (s6 == sizeof(type_traits::yes_type))
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129 | >::value)
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130 | );
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131 | };
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132 | } // namespace detail
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133 |
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134 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_new_operator,T,::boost::detail::has_new_operator_impl<T>::value)
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135 |
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136 | } // namespace boost
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137 |
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138 | #include <boost/type_traits/detail/bool_trait_undef.hpp>
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139 |
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140 | #endif // BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
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