| |
| // Copyright 2000 John Maddock (john@johnmaddock.co.uk) |
| // Copyright 2002 Aleksey Gurtovoy (agurtovoy@meta-comm.com) |
| // |
| // 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_IS_FUNCTION_HPP_INCLUDED |
| #define BOOST_TT_IS_FUNCTION_HPP_INCLUDED |
| |
| #include <boost/type_traits/is_reference.hpp> |
| #include <boost/type_traits/detail/false_result.hpp> |
| #include <boost/config.hpp> |
| |
| #if !defined(BOOST_TT_TEST_MS_FUNC_SIGS) |
| # include <boost/type_traits/detail/is_function_ptr_helper.hpp> |
| #else |
| # include <boost/type_traits/detail/is_function_ptr_tester.hpp> |
| # include <boost/type_traits/detail/yes_no_type.hpp> |
| #endif |
| |
| // should be the last #include |
| #include <boost/type_traits/detail/bool_trait_def.hpp> |
| |
| // is a type a function? |
| // Please note that this implementation is unnecessarily complex: |
| // we could just use !is_convertible<T*, const volatile void*>::value, |
| // except that some compilers erroneously allow conversions from |
| // function pointers to void*. |
| |
| namespace boost { |
| |
| #if !defined( __CODEGEARC__ ) |
| |
| namespace detail { |
| |
| #if !defined(BOOST_TT_TEST_MS_FUNC_SIGS) |
| template<bool is_ref = true> |
| struct is_function_chooser |
| : public ::boost::type_traits::false_result |
| { |
| }; |
| |
| template <> |
| struct is_function_chooser<false> |
| { |
| template< typename T > struct result_ |
| : public ::boost::type_traits::is_function_ptr_helper<T*> |
| { |
| }; |
| }; |
| |
| template <typename T> |
| struct is_function_impl |
| : public is_function_chooser< ::boost::is_reference<T>::value > |
| ::BOOST_NESTED_TEMPLATE result_<T> |
| { |
| }; |
| |
| #else |
| |
| template <typename T> |
| struct is_function_impl |
| { |
| #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| #pragma warning(push) |
| #pragma warning(disable:6334) |
| #endif |
| static T* t; |
| BOOST_STATIC_CONSTANT( |
| bool, value = sizeof(::boost::type_traits::is_function_ptr_tester(t)) |
| == sizeof(::boost::type_traits::yes_type) |
| ); |
| #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| #pragma warning(pop) |
| #endif |
| }; |
| |
| template <typename T> |
| struct is_function_impl<T&> : public false_type |
| {}; |
| #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| template <typename T> |
| struct is_function_impl<T&&> : public false_type |
| {}; |
| #endif |
| |
| #endif |
| |
| } // namespace detail |
| |
| #endif // !defined( __CODEGEARC__ ) |
| |
| #if defined( __CODEGEARC__ ) |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_function,T,__is_function(T)) |
| #else |
| BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_function,T,::boost::detail::is_function_impl<T>::value) |
| #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_function,T&&,false) |
| #endif |
| #endif |
| } // namespace boost |
| |
| #include <boost/type_traits/detail/bool_trait_undef.hpp> |
| |
| #endif // BOOST_TT_IS_FUNCTION_HPP_INCLUDED |