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- ///////////////////////////////////////////////////////////////////////////////
- // literal_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_LITERAL_MATCHER_HPP_EAN_10_04_2005
- #define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_LITERAL_MATCHER_HPP_EAN_10_04_2005
- // MS compatible compilers support #pragma once
- #if defined(_MSC_VER)
- # pragma once
- #endif
- #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
- {
- ///////////////////////////////////////////////////////////////////////////////
- // literal_matcher
- //
- template<typename Traits, typename ICase, typename Not>
- struct literal_matcher
- : quant_style_fixed_width<1>
- {
- typedef typename Traits::char_type char_type;
- typedef Not not_type;
- typedef ICase icase_type;
- char_type ch_;
- explicit literal_matcher(char_type ch)
- : ch_(ch)
- {}
- literal_matcher(char_type ch, Traits const &tr)
- : ch_(detail::translate(ch, tr, icase_type()))
- {}
- template<typename BidiIter, typename Next>
- bool match(match_state<BidiIter> &state, Next const &next) const
- {
- if(state.eos() || Not::value ==
- (detail::translate(*state.cur_, traits_cast<Traits>(state), icase_type()) == this->ch_))
- {
- return false;
- }
- ++state.cur_;
- if(next.match(state))
- {
- return true;
- }
- --state.cur_;
- return false;
- }
- };
- }}}
- #endif
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