1/*=============================================================================
2 Copyright (c) 2014 Thomas Bernard
3
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(BOOST_SPIRIT_X3_NO_CASE_SEPT_16_2014_0912PM)
8#define BOOST_SPIRIT_X3_NO_CASE_SEPT_16_2014_0912PM
9
10#include <boost/spirit/home/x3/support/context.hpp>
11#include <boost/spirit/home/x3/support/unused.hpp>
12#include <boost/spirit/home/x3/support/no_case.hpp>
13#include <boost/spirit/home/x3/core/parser.hpp>
14
15namespace boost { namespace spirit { namespace x3
16{
17 // propagate no_case information through the context
18 template <typename Subject>
19 struct no_case_directive : unary_parser<Subject, no_case_directive<Subject>>
20 {
21 typedef unary_parser<Subject, no_case_directive<Subject> > base_type;
22 static bool const is_pass_through_unary = true;
23 static bool const handles_container = Subject::handles_container;
24
25 constexpr no_case_directive(Subject const& subject)
26 : base_type(subject) {}
27
28 template <typename Iterator, typename Context
29 , typename RContext, typename Attribute>
30 bool parse(Iterator& first, Iterator const& last
31 , Context const& context, RContext& rcontext, Attribute& attr) const
32 {
33 return this->subject.parse(
34 first, last
35 , make_context<no_case_tag>(no_case_compare_, context)
36 , rcontext
37 , attr);
38 }
39 };
40
41 struct no_case_gen
42 {
43 template <typename Subject>
44 constexpr no_case_directive<typename extension::as_parser<Subject>::value_type>
45 operator[](Subject const& subject) const
46 {
47 return { as_parser(subject) };
48 }
49 };
50
51 constexpr auto no_case = no_case_gen{};
52}}}
53
54#endif
55

source code of boost/libs/spirit/include/boost/spirit/home/x3/directive/no_case.hpp