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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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