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Diffstat (limited to 'boost/spirit/home/x3/directive/matches.hpp')
-rw-r--r-- | boost/spirit/home/x3/directive/matches.hpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/directive/matches.hpp b/boost/spirit/home/x3/directive/matches.hpp new file mode 100644 index 0000000000..2aae43b50d --- /dev/null +++ b/boost/spirit/home/x3/directive/matches.hpp @@ -0,0 +1,51 @@ +/*============================================================================= + 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; + + 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> + matches_directive<typename extension::as_parser<Subject>::value_type> + operator[](Subject const& subject) const + { + return { as_parser(subject) }; + } + }; + + auto const matches = matches_gen{}; +}}} + +#endif |