1 /*=============================================================================
2 Copyright (c) 2001-2011 Hartmut Kaiser
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 =============================================================================*/
7 #if !defined(SPIRIT_MATCHES_JAN_07_2010_0745PM)
8 #define SPIRIT_MATCHES_JAN_07_2010_0745PM
14 #include <boost/spirit/home/qi/meta_compiler.hpp>
15 #include <boost/spirit/home/qi/parser.hpp>
16 #include <boost/spirit/home/qi/detail/assign_to.hpp>
17 #include <boost/spirit/home/support/unused.hpp>
18 #include <boost/spirit/home/support/info.hpp>
19 #include <boost/spirit/home/support/common_terminals.hpp>
20 #include <boost/spirit/home/support/has_semantic_action.hpp>
21 #include <boost/spirit/home/support/handles_container.hpp>
23 namespace boost { namespace spirit
25 ///////////////////////////////////////////////////////////////////////////
27 ///////////////////////////////////////////////////////////////////////////
29 struct use_directive<qi::domain, tag::matches> // enables matches
33 namespace boost { namespace spirit { namespace qi
35 #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
36 using spirit::matches;
38 using spirit::matches_type;
40 ///////////////////////////////////////////////////////////////////////////
41 // matches_directive returns whether the embedded parser matched
42 ///////////////////////////////////////////////////////////////////////////
43 template <typename Subject>
44 struct matches_directive : unary_parser<matches_directive<Subject> >
46 typedef Subject subject_type;
47 matches_directive(Subject const& subject_)
48 : subject(subject_) {}
50 template <typename Context, typename Iterator>
56 template <typename Iterator, typename Context
57 , typename Skipper, typename Attribute>
58 bool parse(Iterator& first, Iterator const& last
59 , Context& context, Skipper const& skipper, Attribute& attr_) const
61 bool result = subject.parse(first, last, context, skipper, unused);
62 spirit::traits::assign_to(result, attr_);
66 template <typename Context>
67 info what(Context& context) const
69 return info("matches", subject.what(context));
75 // silence MSVC warning C4512: assignment operator could not be generated
76 matches_directive& operator= (matches_directive const&);
79 ///////////////////////////////////////////////////////////////////////////
80 // Parser generators: make_xxx function (objects)
81 ///////////////////////////////////////////////////////////////////////////
82 template <typename Subject, typename Modifiers>
83 struct make_directive<tag::matches, Subject, Modifiers>
85 typedef matches_directive<Subject> result_type;
86 result_type operator()(unused_type, Subject const& subject, unused_type) const
88 return result_type(subject);
93 namespace boost { namespace spirit { namespace traits
95 ///////////////////////////////////////////////////////////////////////////
96 template <typename Subject>
97 struct has_semantic_action<qi::matches_directive<Subject> >
98 : unary_has_semantic_action<Subject> {};
100 ///////////////////////////////////////////////////////////////////////////
101 template <typename Subject, typename Attribute, typename Context
103 struct handles_container<qi::matches_directive<Subject>, Attribute
105 : unary_handles_container<Subject, Attribute, Context, Iterator> {};