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annotate DEPENDENCIES/generic/include/boost/spirit/home/support/extended_variant.hpp @ 28:44d3e027d592

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Merge
author Chris Cannam
date Tue, 05 Aug 2014 17:21:42 +0100
parents 2665513ce2d3
children c530137014c0
rev   line source
Chris@16 1 /*=============================================================================
Chris@16 2 Copyright (c) 2001-2011 Joel de Guzman
Chris@16 3
Chris@16 4 Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16 5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16 6 ==============================================================================*/
Chris@16 7 #if !defined(BOOST_SPIRIT_EXTENDED_VARIANT_AUGUST_6_2011_0859AM)
Chris@16 8 #define BOOST_SPIRIT_EXTENDED_VARIANT_AUGUST_6_2011_0859AM
Chris@16 9
Chris@16 10 #if defined(_MSC_VER)
Chris@16 11 #pragma once
Chris@16 12 #endif
Chris@16 13
Chris@16 14 #include <boost/variant.hpp>
Chris@16 15 #include <boost/preprocessor/repetition/enum_params_with_a_default.hpp>
Chris@16 16
Chris@16 17 ///////////////////////////////////////////////////////////////////////////////
Chris@16 18 namespace boost { namespace spirit
Chris@16 19 {
Chris@16 20 template <
Chris@16 21 BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(
Chris@16 22 BOOST_VARIANT_LIMIT_TYPES,
Chris@16 23 typename T, boost::detail::variant::void_)
Chris@16 24 // We should not be depending on detail::variant::void_
Chris@16 25 // but I'm not sure if this can fixed. Any other way is
Chris@16 26 // clumsy at best.
Chris@16 27 >
Chris@16 28 struct extended_variant
Chris@16 29 {
Chris@16 30 // tell spirit that this is an adapted variant
Chris@16 31 struct adapted_variant_tag;
Chris@16 32
Chris@16 33 typedef boost::variant<
Chris@16 34 BOOST_VARIANT_ENUM_PARAMS(T)>
Chris@16 35 variant_type;
Chris@16 36 typedef typename variant_type::types types;
Chris@16 37
Chris@16 38 typedef extended_variant<BOOST_VARIANT_ENUM_PARAMS(T)> base_type;
Chris@16 39
Chris@16 40 extended_variant() : var() {}
Chris@16 41
Chris@16 42 template <typename T>
Chris@16 43 extended_variant(T const& var)
Chris@16 44 : var(var) {}
Chris@16 45
Chris@16 46 template <typename T>
Chris@16 47 extended_variant(T& var)
Chris@16 48 : var(var) {}
Chris@16 49
Chris@16 50 template <typename F>
Chris@16 51 typename F::result_type apply_visitor(F const& v)
Chris@16 52 {
Chris@16 53 return var.apply_visitor(v);
Chris@16 54 }
Chris@16 55
Chris@16 56 template <typename F>
Chris@16 57 typename F::result_type apply_visitor(F const& v) const
Chris@16 58 {
Chris@16 59 return var.apply_visitor(v);
Chris@16 60 }
Chris@16 61
Chris@16 62 template <typename F>
Chris@16 63 typename F::result_type apply_visitor(F& v)
Chris@16 64 {
Chris@16 65 return var.apply_visitor(v);
Chris@16 66 }
Chris@16 67
Chris@16 68 template <typename F>
Chris@16 69 typename F::result_type apply_visitor(F& v) const
Chris@16 70 {
Chris@16 71 return var.apply_visitor(v);
Chris@16 72 }
Chris@16 73
Chris@16 74 variant_type const& get() const
Chris@16 75 {
Chris@16 76 return var;
Chris@16 77 }
Chris@16 78
Chris@16 79 variant_type& get()
Chris@16 80 {
Chris@16 81 return var;
Chris@16 82 }
Chris@16 83
Chris@16 84 variant_type var;
Chris@16 85 };
Chris@16 86 }}
Chris@16 87
Chris@16 88 namespace boost
Chris@16 89 {
Chris@16 90 template <typename T, BOOST_VARIANT_ENUM_PARAMS(typename T)>
Chris@16 91 inline T const&
Chris@16 92 get(boost::spirit::extended_variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& x)
Chris@16 93 {
Chris@16 94 return boost::get<T>(x.get());
Chris@16 95 }
Chris@16 96
Chris@16 97 template <typename T, BOOST_VARIANT_ENUM_PARAMS(typename T)>
Chris@16 98 inline T&
Chris@16 99 get(boost::spirit::extended_variant<BOOST_VARIANT_ENUM_PARAMS(T)>& x)
Chris@16 100 {
Chris@16 101 return boost::get<T>(x.get());
Chris@16 102 }
Chris@16 103
Chris@16 104 template <typename T, BOOST_VARIANT_ENUM_PARAMS(typename T)>
Chris@16 105 inline T const*
Chris@16 106 get(boost::spirit::extended_variant<BOOST_VARIANT_ENUM_PARAMS(T)> const* x)
Chris@16 107 {
Chris@16 108 return boost::get<T>(&x->get());
Chris@16 109 }
Chris@16 110
Chris@16 111 template <typename T, BOOST_VARIANT_ENUM_PARAMS(typename T)>
Chris@16 112 inline T*
Chris@16 113 get(boost::spirit::extended_variant<BOOST_VARIANT_ENUM_PARAMS(T)>* x)
Chris@16 114 {
Chris@16 115 return boost::get<T>(&x->get());
Chris@16 116 }
Chris@16 117 }
Chris@16 118
Chris@16 119 #endif