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// (C) Copyright Runar Undheim, Robert Ramey & John Maddock 2008.
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt).
//
// See http://www.boost.org/libs/type_traits for most recent version including documentation.
#ifndef BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
#define BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
#include <new> // std::nothrow_t
#include <cstddef> // std::size_t
#include <boost/type_traits/config.hpp>
#include <boost/type_traits/detail/yes_no_type.hpp>
#include <boost/type_traits/detail/ice_or.hpp>
// should be the last #include
#include <boost/type_traits/detail/bool_trait_def.hpp>
#if defined(new)
# if BOOST_WORKAROUND(BOOST_MSVC, >= 1310)
# define BOOST_TT_AUX_MACRO_NEW_DEFINED
# pragma push_macro("new")
# undef new
# else
# error "Sorry but you can't include this header if 'new' is defined as a macro."
# endif
#endif
namespace boost {
namespace detail {
template <class U, U x>
struct test;
template <typename T>
struct has_new_operator_impl {
template<class U>
static type_traits::yes_type check_sig1(
U*,
test<
void *(*)(std::size_t),
&U::operator new
>* = NULL
);
template<class U>
static type_traits::no_type check_sig1(...);
template<class U>
static type_traits::yes_type check_sig2(
U*,
test<
void *(*)(std::size_t, const std::nothrow_t&),
&U::operator new
>* = NULL
);
template<class U>
static type_traits::no_type check_sig2(...);
template<class U>
static type_traits::yes_type check_sig3(
U*,
test<
void *(*)(std::size_t, void*),
&U::operator new
>* = NULL
);
template<class U>
static type_traits::no_type check_sig3(...);
template<class U>
static type_traits::yes_type check_sig4(
U*,
test<
void *(*)(std::size_t),
&U::operator new[]
>* = NULL
);
template<class U>
static type_traits::no_type check_sig4(...);
template<class U>
static type_traits::yes_type check_sig5(
U*,
test<
void *(*)(std::size_t, const std::nothrow_t&),
&U::operator new[]
>* = NULL
);
template<class U>
static type_traits::no_type check_sig5(...);
template<class U>
static type_traits::yes_type check_sig6(
U*,
test<
void *(*)(std::size_t, void*),
&U::operator new[]
>* = NULL
);
template<class U>
static type_traits::no_type check_sig6(...);
// GCC2 won't even parse this template if we embed the computation
// of s1 in the computation of value.
#ifdef __GNUC__
BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(has_new_operator_impl<T>::template check_sig1<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(has_new_operator_impl<T>::template check_sig2<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(has_new_operator_impl<T>::template check_sig3<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(has_new_operator_impl<T>::template check_sig4<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(has_new_operator_impl<T>::template check_sig5<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(has_new_operator_impl<T>::template check_sig6<T>(0)));
#else
#if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
#pragma warning(push)
#pragma warning(disable:6334)
#endif
BOOST_STATIC_CONSTANT(unsigned, s1 = sizeof(check_sig1<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s2 = sizeof(check_sig2<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s3 = sizeof(check_sig3<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s4 = sizeof(check_sig4<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s5 = sizeof(check_sig5<T>(0)));
BOOST_STATIC_CONSTANT(unsigned, s6 = sizeof(check_sig6<T>(0)));
#if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
#pragma warning(pop)
#endif
#endif
BOOST_STATIC_CONSTANT(bool, value =
(::boost::type_traits::ice_or<
(s1 == sizeof(type_traits::yes_type)),
(s2 == sizeof(type_traits::yes_type)),
(s3 == sizeof(type_traits::yes_type)),
(s4 == sizeof(type_traits::yes_type)),
(s5 == sizeof(type_traits::yes_type)),
(s6 == sizeof(type_traits::yes_type))
>::value)
);
};
} // namespace detail
BOOST_TT_AUX_BOOL_TRAIT_DEF1(has_new_operator,T,::boost::detail::has_new_operator_impl<T>::value)
} // namespace boost
#if defined(BOOST_TT_AUX_MACRO_NEW_DEFINED)
# pragma pop_macro("new")
#endif
#include <boost/type_traits/detail/bool_trait_undef.hpp>
#endif // BOOST_TT_HAS_NEW_OPERATOR_HPP_INCLUDED
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