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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 | =============================================================================*/ | |
11fdf7f2 TL |
7 | #if !defined(BOOST_SPIRIT_X3_NO_CASE_SEPT_16_2014_0912PM) |
8 | #define BOOST_SPIRIT_X3_NO_CASE_SEPT_16_2014_0912PM | |
7c673cae FG |
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 | ||
15 | namespace 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 | ||
f67539c2 | 25 | constexpr no_case_directive(Subject const& subject) |
7c673cae FG |
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> | |
f67539c2 | 44 | constexpr no_case_directive<typename extension::as_parser<Subject>::value_type> |
7c673cae FG |
45 | operator[](Subject const& subject) const |
46 | { | |
47 | return { as_parser(subject) }; | |
48 | } | |
49 | }; | |
50 | ||
f67539c2 | 51 | constexpr auto no_case = no_case_gen{}; |
7c673cae FG |
52 | }}} |
53 | ||
54 | #endif |