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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