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1 | // Copyright (c) 2001-2011 Hartmut Kaiser |
2 | // | |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #if !defined(BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM) | |
7 | #define BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM | |
8 | ||
9 | #if defined(_MSC_VER) | |
10 | #pragma once | |
11 | #endif | |
12 | ||
13 | #include <boost/spirit/home/support/common_terminals.hpp> | |
14 | #include <boost/spirit/home/support/info.hpp> | |
15 | #include <boost/spirit/home/support/container.hpp> | |
16 | #include <boost/spirit/home/support/detail/hold_any.hpp> | |
17 | #include <boost/spirit/home/qi/domain.hpp> | |
18 | #include <boost/spirit/home/qi/meta_compiler.hpp> | |
19 | #include <boost/spirit/home/qi/skip_over.hpp> | |
20 | #include <boost/spirit/home/qi/parser.hpp> | |
21 | #include <boost/spirit/home/qi/auto/create_parser.hpp> | |
22 | #include <boost/mpl/bool.hpp> | |
23 | ||
24 | /////////////////////////////////////////////////////////////////////////////// | |
25 | namespace boost { namespace spirit | |
26 | { | |
27 | /////////////////////////////////////////////////////////////////////////// | |
28 | // Enablers | |
29 | /////////////////////////////////////////////////////////////////////////// | |
30 | template <> | |
31 | struct use_terminal<qi::domain, tag::auto_> // enables auto_ | |
32 | : mpl::true_ {}; | |
33 | }} | |
34 | ||
35 | /////////////////////////////////////////////////////////////////////////////// | |
36 | namespace boost { namespace spirit { namespace qi | |
37 | { | |
38 | #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS | |
39 | using spirit::auto_; | |
40 | #endif | |
41 | using spirit::auto_type; | |
42 | ||
43 | /////////////////////////////////////////////////////////////////////////// | |
44 | template <typename Modifiers> | |
45 | struct auto_parser | |
46 | : parser<auto_parser<Modifiers> > | |
47 | { | |
48 | template <typename Context, typename Iterator> | |
49 | struct attribute | |
50 | { | |
51 | typedef spirit::hold_any type; | |
52 | }; | |
53 | ||
54 | auto_parser(Modifiers const& modifiers) | |
55 | : modifiers_(modifiers) {} | |
56 | ||
57 | template <typename Iterator, typename Context, typename Skipper | |
58 | , typename Attribute> | |
59 | bool parse(Iterator& first, Iterator const& last | |
60 | , Context& context, Skipper const& skipper, Attribute& attr) const | |
61 | { | |
62 | return compile<qi::domain>(create_parser<Attribute>(), modifiers_) | |
63 | .parse(first, last, context, skipper, attr); | |
64 | } | |
65 | ||
66 | template <typename Context> | |
67 | info what(Context& /*context*/) const | |
68 | { | |
69 | return info("auto_"); | |
70 | } | |
71 | ||
72 | Modifiers modifiers_; | |
73 | }; | |
74 | ||
75 | /////////////////////////////////////////////////////////////////////////// | |
76 | // Generator generators: make_xxx function (objects) | |
77 | /////////////////////////////////////////////////////////////////////////// | |
78 | template <typename Modifiers> | |
79 | struct make_primitive<tag::auto_, Modifiers> | |
80 | { | |
81 | typedef auto_parser<Modifiers> result_type; | |
82 | ||
83 | result_type operator()(unused_type, Modifiers const& modifiers) const | |
84 | { | |
85 | return result_type(modifiers); | |
86 | } | |
87 | }; | |
88 | }}} | |
89 | ||
90 | #endif |