3rdparty/boost/boost/type_traits/is_member_function_pointer.hpp

   1
   2 //  (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
   3 //  Hinnant & John Maddock 2000.
   4 //  Use, modification and distribution are subject to the Boost Software License,
   5 //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt).
   7 //
   8 //  See http://www.boost.org/libs/type_traits for most recent version including documentation.
   9
  10
  11 #ifndef BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED
  12 #define BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED
  13
  14 #include <boost/type_traits/detail/config.hpp>
  15 #include <boost/detail/workaround.hpp>
  16
  17 #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(BOOST_TT_TEST_MS_FUNC_SIGS)
  18    //
  19    // Note: we use the "workaround" version for MSVC because it works for
  20    // __stdcall etc function types, where as the partial specialisation
  21    // version does not do so.
  22    //
  23 #   include <boost/type_traits/detail/is_mem_fun_pointer_impl.hpp>
  24 #   include <boost/type_traits/remove_cv.hpp>
  25 #   include <boost/type_traits/integral_constant.hpp>
  26 #else
  27 #   include <boost/type_traits/is_reference.hpp>
  28 #   include <boost/type_traits/is_array.hpp>
  29 #   include <boost/type_traits/detail/yes_no_type.hpp>
  30 #   include <boost/type_traits/detail/is_mem_fun_pointer_tester.hpp>
  31 #endif
  32
  33 namespace boost {
  34
  35 #if defined( __CODEGEARC__ )
  36 template <class T> struct is_member_function_pointer : public integral_constant<bool, __is_member_function_pointer( T )> {};
  37 #elif !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(BOOST_TT_TEST_MS_FUNC_SIGS)
  38
  39 template <class T> struct is_member_function_pointer
  40    : public ::boost::integral_constant<bool, ::boost::type_traits::is_mem_fun_pointer_impl<typename remove_cv<T>::type>::value>{};
  41
  42 #else
  43
  44 namespace detail {
  45
  46 #ifndef __BORLANDC__
  47
  48 template <bool>
  49 struct is_mem_fun_pointer_select
  50 {
  51    template <class T> struct result_ : public false_type{};
  52 };
  53
  54 template <>
  55 struct is_mem_fun_pointer_select<false>
  56 {
  57     template <typename T> struct result_
  58     {
  59 #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
  60 #pragma warning(push)
  61 #pragma warning(disable:6334)
  62 #endif
  63         static T* make_t;
  64         typedef result_<T> self_type;
  65
  66         BOOST_STATIC_CONSTANT(
  67             bool, value = (
  68                 1 == sizeof(::boost::type_traits::is_mem_fun_pointer_tester(self_type::make_t))
  69             ));
  70 #if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
  71 #pragma warning(pop)
  72 #endif
  73     };
  74 };
  75
  76 template <typename T>
  77 struct is_member_function_pointer_impl
  78     : public is_mem_fun_pointer_select<
  79       ::boost::is_reference<T>::value || ::boost::is_array<T>::value>::template result_<T>{};
  80
  81 template <typename T>
  82 struct is_member_function_pointer_impl<T&> : public false_type{};
  83
  84 #else // Borland C++
  85
  86 template <typename T>
  87 struct is_member_function_pointer_impl
  88 {
  89    static T* m_t;
  90    BOOST_STATIC_CONSTANT(
  91               bool, value =
  92                (1 == sizeof(type_traits::is_mem_fun_pointer_tester(m_t))) );
  93 };
  94
  95 template <typename T>
  96 struct is_member_function_pointer_impl<T&>
  97 {
  98    BOOST_STATIC_CONSTANT(bool, value = false);
  99 };
 100
 101 #endif
 102
 103 template<> struct is_member_function_pointer_impl<void> : public false_type{};
 104 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
 105 template<> struct is_member_function_pointer_impl<void const> : public false_type{};
 106 template<> struct is_member_function_pointer_impl<void const volatile> : public false_type{};
 107 template<> struct is_member_function_pointer_impl<void volatile> : public false_type{};
 108 #endif
 109
 110 } // namespace detail
 111
 112 template <class T>
 113 struct is_member_function_pointer
 114    : public integral_constant<bool, ::boost::detail::is_member_function_pointer_impl<T>::value>{};
 115
 116 #endif
 117
 118 } // namespace boost
 119
 120 #endif // BOOST_TT_IS_MEMBER_FUNCTION_POINTER_HPP_INCLUDED