/*=============================================================================
    Copyright (c) 2001-2014 Joel de Guzman

    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)
==============================================================================*/
#if !defined(BOOST_SPIRIT_X3_PROXY_FEBRUARY_1_2013_0211PM)
#define BOOST_SPIRIT_X3_PROXY_FEBRUARY_1_2013_0211PM

#include <boost/spirit/home/x3/core/parser.hpp>
#include <boost/spirit/home/x3/core/detail/parse_into_container.hpp>
#include <boost/spirit/home/x3/support/traits/attribute_category.hpp>

namespace boost {
namespace spirit {
namespace x3 {
template <typename Subject, typename Derived>
struct proxy : unary_parser<Subject, Derived>
{
    static bool const is_pass_through_unary = true;

    constexpr
    proxy(Subject const& subject)
        : unary_parser<Subject, Derived>(subject) {}

    // Overload this when appropriate. The proxy parser will pick up
    // the most derived overload.
    template <typename Iterator, typename Context
              , typename RuleContext, typename Attribute, typename Category>
    bool
    parse_subject(Iterator& first, Iterator const& last
                  , Context const& context, RuleContext& rcontext, Attribute& attr, Category) const
    {
        this->subject.parse(first, last, context, rcontext, attr);
        return true;
    }

    // Main entry point.
    template <typename Iterator, typename Context
              , typename RuleContext, typename Attribute>
    bool
    parse(Iterator& first, Iterator const& last
          , Context const& context, RuleContext& rcontext, Attribute& attr) const
    {
        return this->derived().parse_subject(first, last, context, rcontext, attr
                                             , typename traits::attribute_category<Attribute>::type());
    }
};

}
}
}

#endif
