ceph/src/boost/boost/xpressive/detail/core/matcher/range_matcher.hpp

   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)
  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
  23 namespace 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)
  84 # pragma warning(pop)
  85 #endif
  86
  87 #endif