| /*============================================================================= |
| Copyright (c) 2014 Thomas Bernard |
| |
| 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_NO_CASE_SEPT_16_2014_0912PM) |
| #define BOOST_SPIRIT_X3_NO_CASE_SEPT_16_2014_0912PM |
| |
| #include <boost/spirit/home/x3/support/context.hpp> |
| #include <boost/spirit/home/x3/support/unused.hpp> |
| #include <boost/spirit/home/x3/support/no_case.hpp> |
| #include <boost/spirit/home/x3/core/parser.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 |
| { |
| // propagate no_case information through the context |
| template <typename Subject> |
| struct no_case_directive : unary_parser<Subject, no_case_directive<Subject>> |
| { |
| typedef unary_parser<Subject, no_case_directive<Subject> > base_type; |
| static bool const is_pass_through_unary = true; |
| static bool const handles_container = Subject::handles_container; |
| |
| constexpr no_case_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 |
| { |
| return this->subject.parse( |
| first, last |
| , make_context<no_case_tag>(no_case_compare_, context) |
| , rcontext |
| , attr); |
| } |
| }; |
| |
| struct no_case_gen |
| { |
| template <typename Subject> |
| constexpr no_case_directive<typename extension::as_parser<Subject>::value_type> |
| operator[](Subject const& subject) const |
| { |
| return { as_parser(subject) }; |
| } |
| }; |
| |
| constexpr auto no_case = no_case_gen{}; |
| }}} |
| |
| #endif |