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annotate DEPENDENCIES/generic/include/boost/proto/detail/as_expr.hpp @ 133:4acb5d8d80b6 tip

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Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents c530137014c0
children
rev   line source
Chris@16 1 ///////////////////////////////////////////////////////////////////////////////
Chris@16 2 /// \file as_expr.hpp
Chris@16 3 /// Contains definition of the as_expr\<\> and as_child\<\> helper class
Chris@16 4 /// templates used to implement proto::domain's as_expr\<\> and as_child\<\>
Chris@16 5 /// member templates.
Chris@16 6 //
Chris@16 7 // Copyright 2010 Eric Niebler. Distributed under the Boost
Chris@16 8 // Software License, Version 1.0. (See accompanying file
Chris@16 9 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16 10
Chris@16 11 #ifndef BOOST_PROTO_DETAIL_AS_EXPR_HPP_EAN_06_09_2010
Chris@16 12 #define BOOST_PROTO_DETAIL_AS_EXPR_HPP_EAN_06_09_2010
Chris@16 13
Chris@16 14 #include <boost/config.hpp>
Chris@16 15 #include <boost/detail/workaround.hpp>
Chris@16 16 #include <boost/type_traits/remove_const.hpp>
Chris@16 17 #include <boost/proto/proto_fwd.hpp>
Chris@16 18 #include <boost/proto/args.hpp>
Chris@16 19
Chris@101 20 #if defined(_MSC_VER)
Chris@16 21 # pragma warning(push)
Chris@16 22 # pragma warning(disable : 4714) // function 'xxx' marked as __forceinline not inlined
Chris@16 23 #endif
Chris@16 24
Chris@16 25 namespace boost { namespace proto { namespace detail
Chris@16 26 {
Chris@16 27
Chris@16 28 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 29 template<typename Generator>
Chris@16 30 struct base_generator
Chris@16 31 {
Chris@16 32 typedef Generator type;
Chris@16 33 };
Chris@16 34
Chris@16 35 template<typename Generator>
Chris@16 36 struct base_generator<use_basic_expr<Generator> >
Chris@16 37 {
Chris@16 38 typedef Generator type;
Chris@16 39 };
Chris@16 40
Chris@16 41 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 42 template<typename T, typename Generator, bool WantsBasicExpr>
Chris@16 43 struct as_expr;
Chris@16 44
Chris@16 45 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 46 template<typename T, typename Generator>
Chris@16 47 struct as_expr<T, Generator, false>
Chris@16 48 {
Chris@16 49 typedef typename term_traits<T &>::value_type value_type;
Chris@16 50 typedef proto::expr<proto::tag::terminal, term<value_type>, 0> expr_type;
Chris@16 51 typedef typename Generator::template result<Generator(expr_type)>::type result_type;
Chris@16 52
Chris@16 53 BOOST_FORCEINLINE
Chris@16 54 result_type operator()(T &t) const
Chris@16 55 {
Chris@16 56 return Generator()(expr_type::make(t));
Chris@16 57 }
Chris@16 58 };
Chris@16 59
Chris@16 60 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 61 template<typename T, typename Generator>
Chris@16 62 struct as_expr<T, Generator, true>
Chris@16 63 {
Chris@16 64 typedef typename term_traits<T &>::value_type value_type;
Chris@16 65 typedef proto::basic_expr<proto::tag::terminal, term<value_type>, 0> expr_type;
Chris@16 66 typedef typename Generator::template result<Generator(expr_type)>::type result_type;
Chris@16 67
Chris@16 68 BOOST_FORCEINLINE
Chris@16 69 result_type operator()(T &t) const
Chris@16 70 {
Chris@16 71 return Generator()(expr_type::make(t));
Chris@16 72 }
Chris@16 73 };
Chris@16 74
Chris@16 75 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 76 template<typename T>
Chris@16 77 struct as_expr<T, proto::default_generator, false>
Chris@16 78 {
Chris@16 79 typedef typename term_traits<T &>::value_type value_type;
Chris@16 80 typedef proto::expr<proto::tag::terminal, term<value_type>, 0> result_type;
Chris@16 81
Chris@16 82 BOOST_FORCEINLINE
Chris@16 83 result_type operator()(T &t) const
Chris@16 84 {
Chris@16 85 return result_type::make(t);
Chris@16 86 }
Chris@16 87 };
Chris@16 88
Chris@16 89 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 90 template<typename T>
Chris@16 91 struct as_expr<T, proto::default_generator, true>
Chris@16 92 {
Chris@16 93 typedef typename term_traits<T &>::value_type value_type;
Chris@16 94 typedef proto::basic_expr<proto::tag::terminal, term<value_type>, 0> result_type;
Chris@16 95
Chris@16 96 BOOST_FORCEINLINE
Chris@16 97 result_type operator()(T &t) const
Chris@16 98 {
Chris@16 99 return result_type::make(t);
Chris@16 100 }
Chris@16 101 };
Chris@16 102
Chris@16 103 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 104 template<typename T, typename Generator, bool WantsBasicExpr>
Chris@16 105 struct as_child;
Chris@16 106
Chris@16 107 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 108 template<typename T, typename Generator>
Chris@16 109 struct as_child<T, Generator, false>
Chris@16 110 {
Chris@16 111 #if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
Chris@16 112 typedef typename term_traits<T &>::reference reference;
Chris@16 113 #else
Chris@16 114 typedef T &reference;
Chris@16 115 #endif
Chris@16 116 typedef proto::expr<proto::tag::terminal, term<reference>, 0> expr_type;
Chris@16 117 typedef typename Generator::template result<Generator(expr_type)>::type result_type;
Chris@16 118
Chris@16 119 BOOST_FORCEINLINE
Chris@16 120 result_type operator()(T &t) const
Chris@16 121 {
Chris@16 122 return Generator()(expr_type::make(t));
Chris@16 123 }
Chris@16 124 };
Chris@16 125
Chris@16 126 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 127 template<typename T, typename Generator>
Chris@16 128 struct as_child<T, Generator, true>
Chris@16 129 {
Chris@16 130 #if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
Chris@16 131 typedef typename term_traits<T &>::reference reference;
Chris@16 132 #else
Chris@16 133 typedef T &reference;
Chris@16 134 #endif
Chris@16 135 typedef proto::basic_expr<proto::tag::terminal, term<reference>, 0> expr_type;
Chris@16 136 typedef typename Generator::template result<Generator(expr_type)>::type result_type;
Chris@16 137
Chris@16 138 BOOST_FORCEINLINE
Chris@16 139 result_type operator()(T &t) const
Chris@16 140 {
Chris@16 141 return Generator()(expr_type::make(t));
Chris@16 142 }
Chris@16 143 };
Chris@16 144
Chris@16 145 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 146 template<typename T>
Chris@16 147 struct as_child<T, proto::default_generator, false>
Chris@16 148 {
Chris@16 149 #if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
Chris@16 150 typedef typename term_traits<T &>::reference reference;
Chris@16 151 #else
Chris@16 152 typedef T &reference;
Chris@16 153 #endif
Chris@16 154 typedef proto::expr<proto::tag::terminal, term<reference>, 0> result_type;
Chris@16 155
Chris@16 156 BOOST_FORCEINLINE
Chris@16 157 result_type operator()(T &t) const
Chris@16 158 {
Chris@16 159 return result_type::make(t);
Chris@16 160 }
Chris@16 161 };
Chris@16 162
Chris@16 163 ////////////////////////////////////////////////////////////////////////////////////////////////
Chris@16 164 template<typename T>
Chris@16 165 struct as_child<T, proto::default_generator, true>
Chris@16 166 {
Chris@16 167 #if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
Chris@16 168 typedef typename term_traits<T &>::reference reference;
Chris@16 169 #else
Chris@16 170 typedef T &reference;
Chris@16 171 #endif
Chris@16 172 typedef proto::basic_expr<proto::tag::terminal, term<reference>, 0> result_type;
Chris@16 173
Chris@16 174 BOOST_FORCEINLINE
Chris@16 175 result_type operator()(T &t) const
Chris@16 176 {
Chris@16 177 return result_type::make(t);
Chris@16 178 }
Chris@16 179 };
Chris@16 180
Chris@16 181 }}}
Chris@16 182
Chris@101 183 #if defined(_MSC_VER)
Chris@16 184 # pragma warning(pop)
Chris@16 185 #endif
Chris@16 186
Chris@16 187 #endif