| /*============================================================================= |
| Copyright (c) 2015 Mario Lang |
| Copyright (c) 2001-2011 Hartmut Kaiser |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| =============================================================================*/ |
| #if !defined(BOOST_SPIRIT_HOME_X3_EXTENSIONS_MATCHES_HPP) |
| #define BOOST_SPIRIT_HOME_X3_EXTENSIONS_MATCHES_HPP |
| |
| #include <boost/spirit/home/x3/core/parser.hpp> |
| #include <boost/spirit/home/x3/support/traits/move_to.hpp> |
| #include <boost/spirit/home/x3/support/unused.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 |
| { |
| template <typename Subject> |
| struct matches_directive : unary_parser<Subject, matches_directive<Subject>> |
| { |
| using base_type = unary_parser<Subject, matches_directive<Subject>>; |
| static bool const has_attribute = true; |
| using attribute_type = bool; |
| |
| constexpr matches_directive(Subject const& subject) : base_type(subject) {} |
| |
| template <typename Iterator, typename Context |
| , typename RContext, typename Attribute> |
| bool parse(Iterator& first, Iterator const& last |
| , Context const& context, RContext& rcontext, Attribute& attr) const |
| { |
| bool const result = this->subject.parse( |
| first, last, context, rcontext, unused); |
| traits::move_to(result, attr); |
| return true; |
| } |
| }; |
| |
| struct matches_gen |
| { |
| template <typename Subject> |
| constexpr matches_directive<typename extension::as_parser<Subject>::value_type> |
| operator[](Subject const& subject) const |
| { |
| return { as_parser(subject) }; |
| } |
| }; |
| |
| constexpr auto matches = matches_gen{}; |
| }}} |
| |
| #endif |