[857] | 1 |
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| 2 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes,
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| 3 | // Howard Hinnant and John Maddock 2000.
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| 4 | // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001
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| 5 |
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| 6 | // Use, modification and distribution are subject to the Boost Software License,
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| 7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 8 | // http://www.boost.org/LICENSE_1_0.txt).
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| 9 | //
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| 10 | // See http://www.boost.org/libs/type_traits for most recent version including documentation.
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| 11 |
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| 12 | // Fixed is_pointer, is_reference, is_const, is_volatile, is_same,
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| 13 | // is_member_pointer based on the Simulated Partial Specialization work
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| 14 | // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or
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| 15 | // http://groups.yahoo.com/group/boost/message/5441
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| 16 | // Some workarounds in here use ideas suggested from "Generic<Programming>:
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| 17 | // Mappings between Types and Values"
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| 18 | // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html).
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| 19 |
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| 20 |
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| 21 | #ifndef BOOST_TT_IS_MEMBER_POINTER_HPP_INCLUDED
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| 22 | #define BOOST_TT_IS_MEMBER_POINTER_HPP_INCLUDED
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| 23 |
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| 24 | #include "boost/type_traits/config.hpp"
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| 25 | #include "boost/detail/workaround.hpp"
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| 26 |
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| 27 | #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !BOOST_WORKAROUND(__BORLANDC__, < 0x600)
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| 28 | # include "boost/type_traits/is_member_function_pointer.hpp"
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| 29 | #else
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| 30 | # include "boost/type_traits/is_reference.hpp"
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| 31 | # include "boost/type_traits/is_array.hpp"
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| 32 | # include "boost/type_traits/detail/is_mem_fun_pointer_tester.hpp"
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| 33 | # include "boost/type_traits/detail/yes_no_type.hpp"
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| 34 | # include "boost/type_traits/detail/false_result.hpp"
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| 35 | # include "boost/type_traits/detail/ice_or.hpp"
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| 36 | #endif
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| 37 |
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| 38 | // should be the last #include
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| 39 | #include "boost/type_traits/detail/bool_trait_def.hpp"
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| 40 |
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| 41 | namespace boost {
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| 42 |
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| 43 | #if BOOST_WORKAROUND(__BORLANDC__, < 0x600)
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| 44 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_member_pointer,T,false)
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| 45 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,typename U,is_member_pointer,U T::*,true)
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| 46 |
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| 47 | #elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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| 48 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_member_pointer,T,::boost::is_member_function_pointer<T>::value)
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| 49 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,typename U,is_member_pointer,U T::*,true)
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| 50 |
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| 51 | #else // no partial template specialization
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| 52 |
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| 53 | namespace detail {
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| 54 |
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| 55 | template <typename R, typename T>
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| 56 | ::boost::type_traits::yes_type BOOST_TT_DECL is_member_pointer_tester(R T::*const volatile*);
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| 57 | ::boost::type_traits::no_type BOOST_TT_DECL is_member_pointer_tester(...);
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| 58 |
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| 59 | template <bool>
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| 60 | struct is_member_pointer_select
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| 61 | : ::boost::type_traits::false_result
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| 62 | {
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| 63 | };
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| 64 |
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| 65 | template <>
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| 66 | struct is_member_pointer_select<false>
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| 67 | {
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| 68 | template <typename T> struct result_
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| 69 | {
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| 70 | static T* make_t();
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| 71 | BOOST_STATIC_CONSTANT(
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| 72 | bool, value =
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| 73 | (::boost::type_traits::ice_or<
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| 74 | (1 == sizeof(::boost::type_traits::is_mem_fun_pointer_tester(make_t()))),
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| 75 | (1 == sizeof(is_member_pointer_tester(make_t())))
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| 76 | >::value) );
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| 77 | };
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| 78 | };
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| 79 |
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| 80 | template <typename T>
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| 81 | struct is_member_pointer_impl
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| 82 | : is_member_pointer_select<
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| 83 | ::boost::type_traits::ice_or<
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| 84 | ::boost::is_reference<T>::value
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| 85 | , ::boost::is_array<T>::value
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| 86 | >::value
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| 87 | >::template result_<T>
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| 88 | {
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| 89 | };
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| 90 |
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| 91 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_member_pointer,void,false)
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| 92 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
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| 93 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_member_pointer,void const,false)
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| 94 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_member_pointer,void volatile,false)
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| 95 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_member_pointer,void const volatile,false)
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| 96 | #endif
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| 97 |
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| 98 | } // namespace detail
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| 99 |
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| 100 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_member_pointer,T,::boost::detail::is_member_pointer_impl<T>::value)
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| 101 |
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| 102 | #endif // __BORLANDC__
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| 103 |
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| 104 | } // namespace boost
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| 105 |
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| 106 | #include "boost/type_traits/detail/bool_trait_undef.hpp"
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| 107 |
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| 108 | #endif // BOOST_TT_IS_MEMBER_POINTER_HPP_INCLUDED
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