FM / matcher

/usr/include/boost/xpressive/detail/core/matcher/

/usr/include/boost/xpressive/detail/core/matcher

Name	Size	Mode	Actions
action_matcher.hpp	16313	0644	edit dl rm
alternate_end_matcher.hpp	1437	0644	edit dl rm
alternate_matcher.hpp	4164	0644	edit dl rm
any_matcher.hpp	1368	0644	edit dl rm
assert_bol_matcher.hpp	2182	0644	edit dl rm
assert_bos_matcher.hpp	1235	0644	edit dl rm
assert_eol_matcher.hpp	2223	0644	edit dl rm
assert_eos_matcher.hpp	1229	0644	edit dl rm
assert_line_base.hpp	1394	0644	edit dl rm
assert_word_matcher.hpp	3763	0644	edit dl rm
attr_begin_matcher.hpp	1575	0644	edit dl rm
attr_end_matcher.hpp	1427	0644	edit dl rm
attr_matcher.hpp	3451	0644	edit dl rm
charset_matcher.hpp	1851	0644	edit dl rm
end_matcher.hpp	3167	0644	edit dl rm
epsilon_matcher.hpp	1162	0644	edit dl rm
keeper_matcher.hpp	3026	0644	edit dl rm
literal_matcher.hpp	1949	0644	edit dl rm
logical_newline_matcher.hpp	2385	0644	edit dl rm
lookahead_matcher.hpp	4806	0644	edit dl rm
lookbehind_matcher.hpp	5772	0644	edit dl rm
mark_begin_matcher.hpp	1619	0644	edit dl rm
mark_end_matcher.hpp	1788	0644	edit dl rm
mark_matcher.hpp	2427	0644	edit dl rm
optional_matcher.hpp	3954	0644	edit dl rm
posix_charset_matcher.hpp	2036	0644	edit dl rm
predicate_matcher.hpp	5929	0644	edit dl rm
range_matcher.hpp	2462	0644	edit dl rm
regex_byref_matcher.hpp	2760	0644	edit dl rm
regex_matcher.hpp	2299	0644	edit dl rm
repeat_begin_matcher.hpp	2162	0644	edit dl rm
repeat_end_matcher.hpp	3737	0644	edit dl rm
set_matcher.hpp	2623	0644	edit dl rm
simple_repeat_matcher.hpp	7924	0644	edit dl rm
string_matcher.hpp	2859	0644	edit dl rm
true_matcher.hpp	1103	0644	edit dl rm

Edit: /usr/include/boost/xpressive/detail/core/matcher/optional_matcher.hpp (3954B)

///////////////////////////////////////////////////////////////////////////////
// optional_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_OPTIONAL_MATCHER_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_OPTIONAL_MATCHER_HPP_EAN_10_04_2005

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

#include <boost/mpl/bool.hpp>
#include <boost/xpressive/detail/detail_fwd.hpp>
#include <boost/xpressive/detail/core/quant_style.hpp>
#include <boost/xpressive/detail/core/state.hpp>

namespace boost { namespace xpressive { namespace detail
{

///////////////////////////////////////////////////////////////////////////////
    // optional_matcher
    template<typename Xpr, typename Greedy>
    struct optional_matcher
      : quant_style<quant_variable_width, unknown_width::value, Xpr::pure>
    {
        Xpr xpr_;

explicit optional_matcher(Xpr const &xpr)
          : xpr_(xpr)
        {
        }

template<typename BidiIter, typename Next>
        bool match(match_state<BidiIter> &state, Next const &next) const
        {
            return this->match_(state, next, Greedy());
        }

private:
        template<typename BidiIter, typename Next>
        bool match_(match_state<BidiIter> &state, Next const &next, mpl::true_) const // Greedy
        {
            return this->xpr_.BOOST_NESTED_TEMPLATE push_match<Next>(state)
                || next.match(state);
        }

template<typename BidiIter, typename Next>
        bool match_(match_state<BidiIter> &state, Next const &next, mpl::false_) const // Non-greedy
        {
            return next.match(state)
                || this->xpr_.BOOST_NESTED_TEMPLATE push_match<Next>(state);
        }

optional_matcher &operator =(optional_matcher const &);
    };

///////////////////////////////////////////////////////////////////////////////
    // optional_mark_matcher
    template<typename BidiIter, typename Next>
    inline bool match_next(match_state<BidiIter> &state, Next const &next, int mark_number)
    {
        sub_match_impl<BidiIter> &br = state.sub_match(mark_number);

bool old_matched = br.matched;
        br.matched = false;

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

br.matched = old_matched;
        return false;
    }

///////////////////////////////////////////////////////////////////////////////
    // optional_mark_matcher
    template<typename Xpr, typename Greedy>
    struct optional_mark_matcher
      : quant_style<quant_variable_width, unknown_width::value, Xpr::pure>
    {
        Xpr xpr_;
        int mark_number_;

explicit optional_mark_matcher(Xpr const &xpr, int mark_number)
          : xpr_(xpr)
          , mark_number_(mark_number)
        {
        }

template<typename BidiIter, typename Next>
        bool match(match_state<BidiIter> &state, Next const &next) const
        {
            return this->match_(state, next, Greedy());
        }

template<typename BidiIter, typename Next>
        bool match_(match_state<BidiIter> &state, Next const &next, mpl::false_) const // Non-greedy
        {
            return match_next(state, next, this->mark_number_)
                || this->xpr_.BOOST_NESTED_TEMPLATE push_match<Next>(state);
        }

optional_mark_matcher &operator =(optional_mark_matcher const &);
    };

}}}

#endif

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