[3428] | 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 | #ifndef BOOST_TT_REMOVE_CONST_HPP_INCLUDED |
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| 12 | #define BOOST_TT_REMOVE_CONST_HPP_INCLUDED |
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| 13 | |
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| 14 | #include <boost/type_traits/is_volatile.hpp> |
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| 15 | #include <boost/type_traits/broken_compiler_spec.hpp> |
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| 16 | #include <boost/type_traits/detail/cv_traits_impl.hpp> |
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| 17 | #include <boost/config.hpp> |
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| 18 | #include <boost/detail/workaround.hpp> |
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| 19 | |
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| 20 | #include <cstddef> |
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| 21 | |
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| 22 | #if BOOST_WORKAROUND(BOOST_MSVC,<=1300) |
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| 23 | #include <boost/type_traits/msvc/remove_const.hpp> |
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| 24 | #endif |
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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/type_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 | namespace detail { |
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| 34 | |
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| 35 | template <typename T, bool is_vol> |
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| 36 | struct remove_const_helper |
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| 37 | { |
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| 38 | typedef T type; |
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| 39 | }; |
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| 40 | |
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| 41 | template <typename T> |
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| 42 | struct remove_const_helper<T, true> |
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| 43 | { |
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| 44 | typedef T volatile type; |
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| 45 | }; |
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| 46 | |
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| 47 | |
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| 48 | template <typename T> |
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| 49 | struct remove_const_impl |
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| 50 | { |
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| 51 | typedef typename remove_const_helper< |
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| 52 | typename cv_traits_imp<T*>::unqualified_type |
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| 53 | , ::boost::is_volatile<T>::value |
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| 54 | >::type type; |
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| 55 | }; |
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| 56 | |
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| 57 | #ifndef BOOST_NO_RVALUE_REFERENCES |
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| 58 | // |
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| 59 | // We can't filter out rvalue_references at the same level as |
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| 60 | // references or we get ambiguities from msvc: |
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| 61 | // |
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| 62 | template <typename T> |
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| 63 | struct remove_const_impl<T&&> |
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| 64 | { |
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| 65 | typedef T&& type; |
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| 66 | }; |
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| 67 | #endif |
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| 68 | |
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| 69 | } // namespace detail |
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| 70 | |
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| 71 | // * convert a type T to non-const type - remove_const<T> |
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| 72 | |
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| 73 | BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_const,T,typename boost::detail::remove_const_impl<T>::type) |
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| 74 | BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_1(typename T,remove_const,T&,T&) |
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| 75 | #if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS) |
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| 76 | BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_const,T const[N],T type[N]) |
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| 77 | BOOST_TT_AUX_TYPE_TRAIT_PARTIAL_SPEC1_2(typename T,std::size_t N,remove_const,T const volatile[N],T volatile type[N]) |
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| 78 | #endif |
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| 79 | |
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| 80 | #elif !BOOST_WORKAROUND(BOOST_MSVC,<=1300) |
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| 81 | |
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| 82 | BOOST_TT_AUX_TYPE_TRAIT_DEF1(remove_const,T,typename boost::detail::remove_const_impl<T>::type) |
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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/type_trait_undef.hpp> |
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| 89 | |
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| 90 | #endif // BOOST_TT_REMOVE_CONST_HPP_INCLUDED |
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