ceph/src/boost/libs/xpressive/include/boost/xpressive/detail/core/matcher/regex_matcher.hpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // regex_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_REGEX_MATCHER_HPP_EAN_10_04_2005
   9 #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_REGEX_MATCHER_HPP_EAN_10_04_2005
  10
  11 // MS compatible compilers support #pragma once
  12 #if defined(_MSC_VER)
  13 # pragma once
  14 #endif
  15
  16 #include <boost/mpl/assert.hpp>
  17 #include <boost/xpressive/regex_error.hpp>
  18 #include <boost/xpressive/regex_constants.hpp>
  19 #include <boost/xpressive/detail/core/regex_impl.hpp>
  20 #include <boost/xpressive/detail/detail_fwd.hpp>
  21 #include <boost/xpressive/detail/core/quant_style.hpp>
  22 #include <boost/xpressive/detail/core/state.hpp>
  23 #include <boost/xpressive/detail/core/adaptor.hpp>
  24
  25 namespace boost { namespace xpressive { namespace detail
  26 {
  27
  28     ///////////////////////////////////////////////////////////////////////////////
  29     // regex_matcher
  30     //
  31     template<typename BidiIter>
  32     struct regex_matcher
  33       : quant_style<quant_variable_width, unknown_width::value, false>
  34     {
  35         regex_impl<BidiIter> impl_;
  36
  37         regex_matcher(shared_ptr<regex_impl<BidiIter> > const &impl)
  38           : impl_()
  39         {
  40             this->impl_.xpr_ = impl->xpr_;
  41             this->impl_.traits_ = impl->traits_;
  42             this->impl_.mark_count_ = impl->mark_count_;
  43             this->impl_.hidden_mark_count_ = impl->hidden_mark_count_;
  44
  45             BOOST_XPR_ENSURE_(this->impl_.xpr_, regex_constants::error_badref, "bad regex reference");
  46         }
  47
  48         template<typename Next>
  49         bool match(match_state<BidiIter> &state, Next const &next) const
  50         {
  51             // regex_matcher is used for embeding a dynamic regex in a static regex. As such,
  52             // Next will always point to a static regex.
  53             BOOST_MPL_ASSERT((is_static_xpression<Next>));
  54
  55             // wrap the static xpression in a matchable interface
  56             xpression_adaptor<reference_wrapper<Next const>, matchable<BidiIter> > adaptor(boost::cref(next));
  57             return push_context_match(this->impl_, state, adaptor);
  58         }
  59     };
  60
  61 }}}
  62
  63 #endif