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1 | /*============================================================================= |
2 | Copyright (c) 2001-2014 Joel de Guzman | |
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_PROXY_FEBRUARY_1_2013_0211PM) | |
8 | #define BOOST_SPIRIT_X3_PROXY_FEBRUARY_1_2013_0211PM | |
9 | ||
10 | #include <boost/spirit/home/x3/core/parser.hpp> | |
11 | #include <boost/spirit/home/x3/core/detail/parse_into_container.hpp> | |
12 | #include <boost/spirit/home/x3/support/traits/attribute_category.hpp> | |
13 | ||
14 | namespace boost { namespace spirit { namespace x3 | |
15 | { | |
16 | template <typename Subject, typename Derived> | |
17 | struct proxy : unary_parser<Subject, Derived> | |
18 | { | |
19 | static bool const is_pass_through_unary = true; | |
20 | ||
21 | proxy(Subject const& subject) | |
22 | : unary_parser<Subject, Derived>(subject) {} | |
23 | ||
24 | // Overload this when appropriate. The proxy parser will pick up | |
25 | // the most derived overload. | |
26 | template <typename Iterator, typename Context | |
27 | , typename RuleContext, typename Attribute, typename Category> | |
28 | bool parse_subject(Iterator& first, Iterator const& last | |
29 | , Context const& context, RuleContext& rcontext, Attribute& attr, Category) const | |
30 | { | |
31 | this->subject.parse(first, last, context, rcontext, attr); | |
32 | return true; | |
33 | } | |
34 | ||
35 | // Main entry point. | |
36 | template <typename Iterator, typename Context | |
37 | , typename RuleContext, typename Attribute> | |
38 | bool parse(Iterator& first, Iterator const& last | |
39 | , Context const& context, RuleContext& rcontext, Attribute& attr) const | |
40 | { | |
41 | return this->derived().parse_subject(first, last, context, rcontext, attr | |
42 | , typename traits::attribute_category<Attribute>::type()); | |
43 | } | |
44 | }; | |
45 | ||
46 | }}} | |
47 | ||
48 | #endif |