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1 | // Copyright (c) 2001-2011 Hartmut Kaiser |
2 | // Copyright (c) 2001-2011 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_LEX_REFERENCE_APR_20_2009_0827AM) | |
8 | #define BOOST_SPIRIT_LEX_REFERENCE_APR_20_2009_0827AM | |
9 | ||
10 | #if defined(_MSC_VER) | |
11 | #pragma once | |
12 | #endif | |
13 | ||
14 | #include <boost/spirit/home/lex/meta_compiler.hpp> | |
15 | #include <boost/spirit/home/lex/lexer_type.hpp> | |
16 | #include <boost/spirit/home/qi/reference.hpp> | |
17 | #include <boost/spirit/home/support/info.hpp> | |
18 | #include <boost/spirit/home/support/handles_container.hpp> | |
19 | #include <boost/ref.hpp> | |
20 | ||
21 | namespace boost { namespace spirit { namespace lex | |
22 | { | |
23 | /////////////////////////////////////////////////////////////////////////// | |
24 | // reference is a lexer that references another lexer (its Subject) | |
25 | // all lexer components are at the same time | |
26 | /////////////////////////////////////////////////////////////////////////// | |
27 | template <typename Subject, typename IdType = unused_type> | |
28 | struct reference; | |
29 | ||
30 | template <typename Subject> | |
31 | struct reference<Subject, unused_type> | |
32 | : qi::reference<Subject> | |
33 | , lexer_type<reference<Subject> > | |
34 | { | |
35 | reference(Subject& subject) | |
36 | : qi::reference<Subject>(subject) {} | |
37 | ||
38 | template <typename LexerDef, typename String> | |
39 | void collect(LexerDef& lexdef, String const& state | |
40 | , String const& targetstate) const | |
41 | { | |
42 | this->ref.get().collect(lexdef, state, targetstate); | |
43 | } | |
44 | ||
45 | template <typename LexerDef> | |
46 | void add_actions(LexerDef& lexdef) const | |
47 | { | |
48 | this->ref.get().add_actions(lexdef); | |
49 | } | |
50 | }; | |
51 | ||
52 | template <typename Subject, typename IdType> | |
53 | struct reference : reference<Subject> | |
54 | { | |
55 | reference(Subject& subject) | |
56 | : reference<Subject>(subject) {} | |
57 | ||
58 | IdType id() const | |
59 | { | |
60 | return this->ref.get().id(); | |
61 | } | |
62 | std::size_t unique_id() const | |
63 | { | |
64 | return this->ref.get().unique_id(); | |
65 | } | |
66 | std::size_t state() const | |
67 | { | |
68 | return this->ref.get().state(); | |
69 | } | |
70 | }; | |
71 | }}} | |
72 | ||
73 | namespace boost { namespace spirit { namespace traits | |
74 | { | |
75 | /////////////////////////////////////////////////////////////////////////// | |
76 | template <typename Subject, typename IdType | |
77 | , typename Attribute, typename Context, typename Iterator> | |
78 | struct handles_container<lex::reference<Subject, IdType> | |
79 | , Attribute, Context, Iterator> | |
80 | : handles_container< | |
81 | typename remove_const<Subject>::type, Attribute, Context, Iterator> | |
82 | {}; | |
83 | }}} | |
84 | ||
85 | #endif |