Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 1 | |
| 2 | // Copyright 2000 John Maddock (john@johnmaddock.co.uk) |
| 3 | // Copyright 2002 Aleksey Gurtovoy (agurtovoy@meta-comm.com) |
| 4 | // |
| 5 | // Use, modification and distribution are subject to the Boost Software License, |
| 6 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 7 | // http://www.boost.org/LICENSE_1_0.txt). |
| 8 | // |
| 9 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. |
| 10 | |
| 11 | #ifndef BOOST_TT_IS_FUNCTION_HPP_INCLUDED |
| 12 | #define BOOST_TT_IS_FUNCTION_HPP_INCLUDED |
| 13 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 14 | #include <ndnboost/type_traits/is_reference.hpp> |
| 15 | #include <ndnboost/type_traits/detail/false_result.hpp> |
| 16 | #include <ndnboost/config.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 17 | |
| 18 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_TT_TEST_MS_FUNC_SIGS) |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 19 | # include <ndnboost/type_traits/detail/is_function_ptr_helper.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 20 | #else |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 21 | # include <ndnboost/type_traits/detail/is_function_ptr_tester.hpp> |
| 22 | # include <ndnboost/type_traits/detail/yes_no_type.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 23 | #endif |
| 24 | |
| 25 | // should be the last #include |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 26 | #include <ndnboost/type_traits/detail/bool_trait_def.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 27 | |
| 28 | // is a type a function? |
| 29 | // Please note that this implementation is unnecessarily complex: |
| 30 | // we could just use !is_convertible<T*, const volatile void*>::value, |
| 31 | // except that some compilers erroneously allow conversions from |
| 32 | // function pointers to void*. |
| 33 | |
| 34 | namespace ndnboost { |
| 35 | |
| 36 | #if !defined( __CODEGEARC__ ) |
| 37 | |
| 38 | namespace detail { |
| 39 | |
| 40 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_TT_TEST_MS_FUNC_SIGS) |
| 41 | template<bool is_ref = true> |
| 42 | struct is_function_chooser |
| 43 | : public ::ndnboost::type_traits::false_result |
| 44 | { |
| 45 | }; |
| 46 | |
| 47 | template <> |
| 48 | struct is_function_chooser<false> |
| 49 | { |
| 50 | template< typename T > struct result_ |
| 51 | : public ::ndnboost::type_traits::is_function_ptr_helper<T*> |
| 52 | { |
| 53 | }; |
| 54 | }; |
| 55 | |
| 56 | template <typename T> |
| 57 | struct is_function_impl |
| 58 | : public is_function_chooser< ::ndnboost::is_reference<T>::value > |
| 59 | ::BOOST_NESTED_TEMPLATE result_<T> |
| 60 | { |
| 61 | }; |
| 62 | |
| 63 | #else |
| 64 | |
| 65 | template <typename T> |
| 66 | struct is_function_impl |
| 67 | { |
| 68 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| 69 | #pragma warning(push) |
| 70 | #pragma warning(disable:6334) |
| 71 | #endif |
| 72 | static T* t; |
| 73 | BOOST_STATIC_CONSTANT( |
| 74 | bool, value = sizeof(::ndnboost::type_traits::is_function_ptr_tester(t)) |
| 75 | == sizeof(::ndnboost::type_traits::yes_type) |
| 76 | ); |
| 77 | #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000) |
| 78 | #pragma warning(pop) |
| 79 | #endif |
| 80 | }; |
| 81 | |
| 82 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| 83 | template <typename T> |
| 84 | struct is_function_impl<T&> : public false_type |
| 85 | {}; |
| 86 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 87 | template <typename T> |
| 88 | struct is_function_impl<T&&> : public false_type |
| 89 | {}; |
| 90 | #endif |
| 91 | #endif |
| 92 | |
| 93 | #endif |
| 94 | |
| 95 | } // namespace detail |
| 96 | |
| 97 | #endif // !defined( __CODEGEARC__ ) |
| 98 | |
| 99 | #if defined( __CODEGEARC__ ) |
| 100 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_function,T,__is_function(T)) |
| 101 | #else |
| 102 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_function,T,::ndnboost::detail::is_function_impl<T>::value) |
| 103 | #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES |
| 104 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_function,T&&,false) |
| 105 | #endif |
| 106 | #endif |
| 107 | } // namespace ndnboost |
| 108 | |
Jeff Thompson | 2277ce5 | 2013-08-01 17:34:11 -0700 | [diff] [blame] | 109 | #include <ndnboost/type_traits/detail/bool_trait_undef.hpp> |
Jeff Thompson | f7d4994 | 2013-08-01 16:47:40 -0700 | [diff] [blame] | 110 | |
| 111 | #endif // BOOST_TT_IS_FUNCTION_HPP_INCLUDED |