Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/include/boost/xpressive/detail/core/matcher/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

///////////////////////////////////////////////////////////////////////////////
// mark_matcher.hpp
//
//  Copyright 2008 Eric Niebler. Distributed under the Boost
//  Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_MARK_MATCHER_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_MARK_MATCHER_HPP_EAN_10_04_2005

// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif

#include <boost/assert.hpp>
#include <boost/xpressive/detail/detail_fwd.hpp>
#include <boost/xpressive/detail/core/quant_style.hpp>
#include <boost/xpressive/detail/core/state.hpp>
#include <boost/xpressive/detail/utility/traits_utils.hpp>

namespace boost { namespace xpressive { namespace detail
{

    // TODO: the mark matcher is acually a fixed-width matcher, but the width is
    // not known until pattern match time.

    ///////////////////////////////////////////////////////////////////////////////
    // mark_matcher
    //
    template<typename Traits, typename ICase>
    struct mark_matcher
      : quant_style_variable_width
    {
        typedef ICase icase_type;
        int mark_number_;

        mark_matcher(int mark_number, Traits const &)
          : mark_number_(mark_number)
        {
        }

        template<typename BidiIter, typename Next>
        bool match(match_state<BidiIter> &state, Next const &next) const
        {
            BOOST_ASSERT(this->mark_number_ < static_cast<int>(state.mark_count_));
            sub_match_impl<BidiIter> const &br = state.sub_match(this->mark_number_);

            if(!br.matched)
            {
                return false;
            }

            BidiIter const tmp = state.cur_;
            for(BidiIter begin = br.first, end = br.second; begin != end; ++begin, ++state.cur_)
            {
                if(state.eos()
                    || detail::translate(*state.cur_, traits_cast<Traits>(state), icase_type())
                    != detail::translate(*begin, traits_cast<Traits>(state), icase_type()))
                {
                    state.cur_ = tmp;
                    return false;
                }
            }

            if(next.match(state))
            {
                return true;
            }

            state.cur_ = tmp;
            return false;
        }
    };

}}}

#endif