PageRenderTime 7ms CodeModel.GetById 1ms app.highlight 4ms RepoModel.GetById 1ms app.codeStats 0ms

/Src/Dependencies/Boost/boost/xpressive/detail/core/matcher/range_matcher.hpp

http://hadesmem.googlecode.com/
C++ Header | 87 lines | 62 code | 15 blank | 10 comment | 5 complexity | c23148d8cb4aea9f8269389954e6b3b9 MD5 | raw file
 1///////////////////////////////////////////////////////////////////////////////
 2// range_matcher.hpp
 3//
 4//  Copyright 2008 Eric Niebler. Distributed under the Boost
 5//  Software License, Version 1.0. (See accompanying file
 6//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 7
 8#ifndef BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_RANGE_MATCHER_HPP_EAN_10_04_2005
 9#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_RANGE_MATCHER_HPP_EAN_10_04_2005
10
11// MS compatible compilers support #pragma once
12#if defined(_MSC_VER) && (_MSC_VER >= 1020)
13# pragma once
14# pragma warning(push)
15# pragma warning(disable : 4100) // unreferenced formal parameter
16#endif
17
18#include <boost/mpl/bool.hpp>
19#include <boost/xpressive/detail/detail_fwd.hpp>
20#include <boost/xpressive/detail/core/quant_style.hpp>
21#include <boost/xpressive/detail/core/state.hpp>
22
23namespace boost { namespace xpressive { namespace detail
24{
25
26    ///////////////////////////////////////////////////////////////////////////////
27    // range_matcher
28    //
29    template<typename Traits, typename ICase>
30    struct range_matcher
31      : quant_style_fixed_width<1>
32    {
33        typedef typename Traits::char_type char_type;
34        typedef ICase icase_type;
35        char_type ch_min_;
36        char_type ch_max_;
37        bool not_;
38
39        range_matcher(char_type ch_min, char_type ch_max, bool no, Traits const &)
40          : ch_min_(ch_min)
41          , ch_max_(ch_max)
42          , not_(no)
43        {
44        }
45
46        void inverse()
47        {
48            this->not_ = !this->not_;
49        }
50
51        bool in_range(Traits const &tr, char_type ch, mpl::false_) const // case-sensitive
52        {
53            return tr.in_range(this->ch_min_, this->ch_max_, ch);
54        }
55
56        bool in_range(Traits const &tr, char_type ch, mpl::true_) const // case-insensitive
57        {
58            return tr.in_range_nocase(this->ch_min_, this->ch_max_, ch);
59        }
60
61        template<typename BidiIter, typename Next>
62        bool match(match_state<BidiIter> &state, Next const &next) const
63        {
64            if(state.eos() || this->not_ ==
65                this->in_range(traits_cast<Traits>(state), *state.cur_, icase_type()))
66            {
67                return false;
68            }
69
70            ++state.cur_;
71            if(next.match(state))
72            {
73                return true;
74            }
75
76            --state.cur_;
77            return false;
78        }
79    };
80
81}}}
82
83#if defined(_MSC_VER) && (_MSC_VER >= 1020)
84# pragma warning(pop)
85#endif
86
87#endif