[857] | 1 |
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| 2 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, Howard
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| 3 | // Hinnant & John Maddock 2000.
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| 4 | // Use, modification and distribution are subject to the Boost Software License,
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| 5 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 6 | // http://www.boost.org/LICENSE_1_0.txt).
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| 7 | //
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| 8 | // See http://www.boost.org/libs/type_traits for most recent version including documentation.
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| 9 |
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| 10 |
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| 11 | // Some fixes for is_array are based on a newgroup posting by Jonathan Lundquist.
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| 12 |
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| 13 |
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| 14 | #ifndef BOOST_TT_IS_ARRAY_HPP_INCLUDED
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| 15 | #define BOOST_TT_IS_ARRAY_HPP_INCLUDED
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| 16 |
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| 17 | #include "boost/type_traits/config.hpp"
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| 18 |
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| 19 | #ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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| 20 | # include "boost/type_traits/detail/yes_no_type.hpp"
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| 21 | # include "boost/type_traits/detail/wrap.hpp"
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| 22 | #endif
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| 23 |
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| 24 | #include <cstddef>
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| 25 |
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| 26 | // should be the last #include
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| 27 | #include "boost/type_traits/detail/bool_trait_def.hpp"
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| 28 |
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| 29 | namespace boost {
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| 30 |
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| 31 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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| 32 |
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| 33 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_array,T,false)
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| 34 | #if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
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| 35 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,is_array,T[N],true)
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| 36 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,is_array,T const[N],true)
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| 37 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,is_array,T volatile[N],true)
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| 38 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,is_array,T const volatile[N],true)
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| 39 | #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && !defined(__IBMCPP__) && !BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840))
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| 40 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_array,T[],true)
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| 41 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_array,T const[],true)
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| 42 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_array,T volatile[],true)
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| 43 | BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_array,T const volatile[],true)
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| 44 | #endif
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| 45 | #endif
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| 46 |
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| 47 | #else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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| 48 |
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| 49 | namespace detail {
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| 50 |
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| 51 | using ::boost::type_traits::yes_type;
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| 52 | using ::boost::type_traits::no_type;
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| 53 | using ::boost::type_traits::wrap;
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| 54 |
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| 55 | template< typename T > T(* is_array_tester1(wrap<T>) )(wrap<T>);
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| 56 | char BOOST_TT_DECL is_array_tester1(...);
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| 57 |
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| 58 | template< typename T> no_type is_array_tester2(T(*)(wrap<T>));
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| 59 | yes_type BOOST_TT_DECL is_array_tester2(...);
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| 60 |
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| 61 | template< typename T >
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| 62 | struct is_array_impl
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| 63 | {
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| 64 | BOOST_STATIC_CONSTANT(bool, value =
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| 65 | sizeof(::boost::detail::is_array_tester2(
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| 66 | ::boost::detail::is_array_tester1(
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| 67 | ::boost::type_traits::wrap<T>()
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| 68 | )
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| 69 | )) == 1
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| 70 | );
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| 71 | };
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| 72 |
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| 73 | #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
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| 74 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_array,void,false)
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| 75 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_array,void const,false)
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| 76 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_array,void volatile,false)
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| 77 | BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_array,void const volatile,false)
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| 78 | #endif
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| 79 |
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| 80 | } // namespace detail
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| 81 |
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| 82 | BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_array,T,::boost::detail::is_array_impl<T>::value)
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| 83 |
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| 84 | #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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| 85 |
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| 86 | } // namespace boost
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| 87 |
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| 88 | #include "boost/type_traits/detail/bool_trait_undef.hpp"
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| 89 |
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| 90 | #endif // BOOST_TT_IS_ARRAY_HPP_INCLUDED
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