2 // (C) Copyright Runar Undheim, Robert Ramey & John Maddock 2008.
3 // Use, modification and distribution are subject to the Boost Software License,
4 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt).
7 // See http://www.boost.org/libs/type_traits for most recent version including documentation.
9 #ifndef BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
10 #define BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
12 #include <new> // std::nothrow_t
13 #include <cstddef> // std::size_t
14 #include <boost/type_traits/config.hpp>
15 #include <boost/type_traits/detail/yes_no_type.hpp>
16 #include <boost/type_traits/detail/ice_or.hpp>
18 // should be the last #include
19 #include <boost/type_traits/detail/bool_trait_def.hpp>
23 template <class U, U x>
27 struct has_new_operator_impl {
29 static type_traits::yes_type check_sig1(
32 void *(*)(std::size_t),
37 static type_traits::no_type check_sig1(...);
40 static type_traits::yes_type check_sig2(
43 void *(*)(std::size_t, const std::nothrow_t&),
48 static type_traits::no_type check_sig2(...);
51 static type_traits::yes_type check_sig3(
54 void *(*)(std::size_t, void*),
59 static type_traits::no_type check_sig3(...);
63 static type_traits::yes_type check_sig4(
66 void *(*)(std::size_t),
71 static type_traits::no_type check_sig4(...);
74 static type_traits::yes_type check_sig5(
77 void *(*)(std::size_t, const std::nothrow_t&),
82 static type_traits::no_type check_sig5(...);
85 static type_traits::yes_type check_sig6(
88 void *(*)(std::size_t, void*),
93 static type_traits::no_type check_sig6(...);
95 // GCC2 won't even parse this template if we embed the computation
96 // of s1 in the computation of value.
98 BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(has_new_operator_impl<T>::template check_sig1<T>(0)));
99 BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(has_new_operator_impl<T>::template check_sig2<T>(0)));
100 BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(has_new_operator_impl<T>::template check_sig3<T>(0)));
101 BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(has_new_operator_impl<T>::template check_sig4<T>(0)));
102 BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(has_new_operator_impl<T>::template check_sig5<T>(0)));
103 BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(has_new_operator_impl<T>::template check_sig6<T>(0)));
105 #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
106 #pragma warning(push)
107 #pragma warning(disable:6334)
110 BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(check_sig1<T>(0)));
111 BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(check_sig2<T>(0)));
112 BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(check_sig3<T>(0)));
113 BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(check_sig4<T>(0)));
114 BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(check_sig5<T>(0)));
115 BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(check_sig6<T>(0)));
117 #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
121 BOOST_STATIC_CONSTANT(bool, value =
122 (::boost::type_traits::ice_or<
123 (s1 == sizeof(type_traits::yes_type)),
124 (s2 == sizeof(type_traits::yes_type)),
125 (s3 == sizeof(type_traits::yes_type)),
126 (s4 == sizeof(type_traits::yes_type)),
127 (s5 == sizeof(type_traits::yes_type)),
128 (s6 == sizeof(type_traits::yes_type))
132 } // namespace detail
134 BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_new_operator,T,::boost::detail::has_new_operator_impl<T>::value)
138 #include <boost/type_traits/detail/bool_trait_undef.hpp>
140 #endif // BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED