true_matcher.hpp

来自「Boost provides free peer-reviewed portab」· HPP 代码 · 共 39 行

///////////////////////////////////////////////////////////////////////////////
// true_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_TRUE_MATCHER_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_TRUE_MATCHER_HPP_EAN_10_04_2005

// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# 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>

namespace boost { namespace xpressive { namespace detail
{

    ///////////////////////////////////////////////////////////////////////////////
    // true_matcher
    //
    struct true_matcher
      : quant_style_assertion
    {
        template<typename BidiIter, typename Next>
        static bool match(match_state<BidiIter> &, Next const &)
        {
            return true;
        }
    };

}}}

#endif