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#ifndef BOOST_MPL_SET_AUX_ITERATOR_HPP_INCLUDED
#define BOOST_MPL_SET_AUX_ITERATOR_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2003-2007
// Copyright David Abrahams 2003-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id$
// $Date$
// $Revision$
#include <boost/mpl/set/aux_/set0.hpp>
#include <boost/mpl/has_key.hpp>
#include <boost/mpl/iterator_tags.hpp>
#include <boost/mpl/next.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/aux_/config/ctps.hpp>
namespace boost { namespace mpl {
// used by 's_iter_get'
template< typename Set, typename Tail > struct s_iter;
template< typename Set, typename Tail > struct s_iter_get
: eval_if<
has_key< Set,typename Tail::item_type_ >
, identity< s_iter<Set,Tail> >
, next< s_iter<Set,Tail> >
>
{
};
template< typename Set, typename Tail > struct s_iter_impl
{
typedef Tail tail_;
typedef forward_iterator_tag category;
typedef typename Tail::item_type_ type;
#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
typedef typename s_iter_get< Set,typename Tail::base >::type next;
#endif
};
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
template< typename Set, typename Tail >
struct next< s_iter<Set,Tail> >
: s_iter_get< Set,typename Tail::base >
{
};
template< typename Set >
struct next< s_iter<Set,set0<> > >
{
typedef s_iter<Set,set0<> > type;
};
template< typename Set, typename Tail > struct s_iter
: s_iter_impl<Set,Tail>
{
};
template< typename Set > struct s_iter<Set, set0<> >
{
typedef forward_iterator_tag category;
};
#else
template< typename Set >
struct s_end_iter
{
typedef forward_iterator_tag category;
typedef s_iter<Set,set0<> > next;
};
template< typename Set, typename Tail > struct s_iter
: if_<
is_same< Tail,set0<> >
, s_end_iter<Set>
, s_iter_impl<Set,Tail>
>::type
{
};
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
}}
#endif // BOOST_MPL_SET_AUX_ITERATOR_HPP_INCLUDED
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