/*=============================================================================

    Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com)

    http://spirit.sourceforge.net/



    Use, modification and distribution is subject to 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_SPIRIT_ACTOR_PUSH_FRONT_ACTOR_HPP

#define BOOST_SPIRIT_ACTOR_PUSH_FRONT_ACTOR_HPP



#include <boost/spirit/actor/ref_value_actor.hpp>

#include <boost/spirit/actor/ref_const_ref_actor.hpp>



namespace boost { namespace spirit {



    ///////////////////////////////////////////////////////////////////////////

    //  Summary:

    //

    //  A semantic action policy that appends a value to the front of a

    //  container.

    //  (This doc uses convention available in actors.hpp)

    //

    //  Actions (what it does and what ref, value_ref must support):

    //      ref.push_front( value );

    //      ref.push_front( T::value_type(first,last) );

    //      ref.push_front( value_ref );

    //

    //  Policy name:

    //      push_front_action

    //

    //  Policy holder, corresponding helper method:

    //      ref_value_actor, push_front_a( ref );

    //      ref_const_ref_actor, push_front_a( ref, value_ref );

    //

    //  () operators: both

    //

    //  See also ref_value_actor and ref_const_ref_actor for more details.

    ///////////////////////////////////////////////////////////////////////////

    struct push_front_action

    {

        template<

            typename T,

            typename ValueT

        >

        void act(T& ref_, ValueT const& value_) const

        {

            ref_.push_front( value_ );

        }

        template<

            typename T,

            typename IteratorT

        >

        void act(

            T& ref_,

            IteratorT const& first_,

            IteratorT const& last_

            ) const

        {

            typedef typename T::value_type value_type;

            value_type value(first_,last_);



            ref_.push_front( value );

        }

    };



    template<typename T>

    inline ref_value_actor<T,push_front_action> push_front_a(T& ref_)

    {

        return ref_value_actor<T,push_front_action>(ref_);

    }



    template<

        typename T,

        typename ValueT

    >

    inline ref_const_ref_actor<T,ValueT,push_front_action> push_front_a(

        T& ref_,

        ValueT const& value_

    )

    {

        return ref_const_ref_actor<T,ValueT,push_front_action>(ref_,value_);

    }



}}



#endif

