| /*============================================================================= |
| Copyright (c) 2001-2014 Joel de Guzman |
| |
| 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_X3_NOT_PREDICATE_MARCH_23_2007_0618PM) |
| #define BOOST_SPIRIT_X3_NOT_PREDICATE_MARCH_23_2007_0618PM |
| |
| #include <boost/spirit/home/x3/core/parser.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 |
| { |
| template <typename Subject> |
| struct not_predicate : unary_parser<Subject, not_predicate<Subject>> |
| { |
| typedef unary_parser<Subject, not_predicate<Subject>> base_type; |
| |
| typedef unused_type attribute_type; |
| static bool const has_attribute = false; |
| |
| constexpr not_predicate(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 |
| { |
| Iterator i = first; |
| return !this->subject.parse(i, last, context, rcontext, unused); |
| } |
| }; |
| |
| template <typename Subject> |
| constexpr not_predicate<typename extension::as_parser<Subject>::value_type> |
| operator!(Subject const& subject) |
| { |
| return { as_parser(subject) }; |
| } |
| }}} |
| |
| #endif |
