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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Hartmut Kaiser | |
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_DETAIL_PARSE_DEC_02_2009_0411PM) | |
8 | #define BOOST_SPIRIT_DETAIL_PARSE_DEC_02_2009_0411PM | |
9 | ||
10 | #if defined(_MSC_VER) | |
11 | #pragma once | |
12 | #endif | |
13 | ||
14 | #include <boost/spirit/home/qi/meta_compiler.hpp> | |
15 | #include <boost/spirit/home/qi/skip_flag.hpp> | |
16 | #include <boost/spirit/home/qi/skip_over.hpp> | |
17 | #include <boost/spirit/home/support/unused.hpp> | |
18 | #include <boost/mpl/assert.hpp> | |
19 | #include <boost/mpl/bool.hpp> | |
20 | ||
21 | namespace boost { namespace spirit { namespace qi { namespace detail | |
22 | { | |
23 | /////////////////////////////////////////////////////////////////////////// | |
24 | template <typename Expr, typename Enable = void> | |
25 | struct parse_impl | |
26 | { | |
27 | // Report invalid expression error as early as possible. | |
28 | // If you got an error_invalid_expression error message here, | |
29 | // then the expression (expr) is not a valid spirit qi expression. | |
30 | // Did you intend to use the auto_ facilities while forgetting to | |
31 | // #include <boost/spirit/include/qi_auto.hpp>? | |
32 | BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Expr); | |
33 | }; | |
34 | ||
35 | template <typename Expr> | |
36 | struct parse_impl<Expr | |
37 | , typename enable_if<traits::matches<qi::domain, Expr> >::type> | |
38 | { | |
39 | template <typename Iterator> | |
40 | static bool call( | |
41 | Iterator& first | |
42 | , Iterator last | |
43 | , Expr const& expr) | |
44 | { | |
45 | return compile<qi::domain>(expr).parse( | |
46 | first, last, unused, unused, unused); | |
47 | } | |
48 | }; | |
49 | ||
50 | /////////////////////////////////////////////////////////////////////////// | |
51 | template <typename Expr, typename Enable = void> | |
52 | struct phrase_parse_impl | |
53 | { | |
54 | // Report invalid expression error as early as possible. | |
55 | // If you got an error_invalid_expression error message here, | |
56 | // then the expression (expr) is not a valid spirit qi expression. | |
57 | // Did you intend to use the auto_ facilities while forgetting to | |
58 | // #include <boost/spirit/include/qi_auto.hpp>? | |
59 | BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Expr); | |
60 | }; | |
61 | ||
62 | template <typename Expr> | |
63 | struct phrase_parse_impl<Expr | |
64 | , typename enable_if<traits::matches<qi::domain, Expr> >::type> | |
65 | { | |
66 | template <typename Iterator, typename Skipper> | |
67 | static bool call( | |
68 | Iterator& first | |
69 | , Iterator last | |
70 | , Expr const& expr | |
71 | , Skipper const& skipper | |
72 | , BOOST_SCOPED_ENUM(skip_flag) post_skip) | |
73 | { | |
74 | // Report invalid expression error as early as possible. | |
75 | // If you got an error_invalid_expression error message here, | |
76 | // then the skipper is not a valid spirit qi expression. | |
77 | BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Skipper); | |
78 | ||
79 | typedef | |
80 | typename result_of::compile<qi::domain, Skipper>::type | |
81 | skipper_type; | |
82 | skipper_type const skipper_ = compile<qi::domain>(skipper); | |
83 | ||
84 | if (!compile<qi::domain>(expr).parse( | |
85 | first, last, unused, skipper_, unused)) | |
86 | return false; | |
87 | ||
88 | if (post_skip == skip_flag::postskip) | |
89 | qi::skip_over(first, last, skipper_); | |
90 | return true; | |
91 | } | |
92 | }; | |
93 | ||
94 | }}}} | |
95 | ||
96 | #endif | |
97 |