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/Src/Dependencies/Boost/boost/spirit/home/qi/detail/parse.hpp

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C++ Header | 97 lines | 64 code | 12 blank | 21 comment | 3 complexity | 6ed2683ac14b7a58c1faf580063e32a8 MD5 | raw file
 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
21namespace 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