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Filename : assert_line_base.hpp
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///////////////////////////////////////////////////////////////////////////////
// assert_line_base.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_DETAIL_ASSERT_LINE_BASE_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_CORE_MATCHER_DETAIL_ASSERT_LINE_BASE_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>

namespace boost { namespace xpressive { namespace detail
{

    ///////////////////////////////////////////////////////////////////////////////
    // assert_line_base
    //
    template<typename Traits>
    struct assert_line_base
        : quant_style_assertion
    {
        typedef typename Traits::char_type char_type;
        typedef typename Traits::char_class_type char_class_type;

    protected:
        assert_line_base(Traits const &tr)
            : newline_(lookup_classname(tr, "newline"))
            , nl_(tr.widen('\n'))
            , cr_(tr.widen('\r'))
        {
        }

        char_class_type newline_;
        char_type nl_, cr_;
    };

}}}

#endif