63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
// Boost.Range library
|
|
//
|
|
// Copyright Neil Groves 2010. 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)
|
|
//
|
|
// For more information, see http://www.boost.org/libs/range/
|
|
//
|
|
#ifndef BOOST_RANGE_HAS_ITERATOR_HPP_INCLUDED
|
|
#define BOOST_RANGE_HAS_ITERATOR_HPP_INCLUDED
|
|
|
|
#include <boost/mpl/bool.hpp>
|
|
#include <boost/mpl/has_xxx.hpp>
|
|
#include <boost/range/iterator.hpp>
|
|
#include <boost/utility.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace range_detail
|
|
{
|
|
BOOST_MPL_HAS_XXX_TRAIT_DEF(type)
|
|
|
|
template<class T, class Enabler = void>
|
|
struct has_range_iterator_impl
|
|
: boost::mpl::false_
|
|
{
|
|
};
|
|
|
|
template<class T>
|
|
struct has_range_iterator_impl<T, BOOST_DEDUCED_TYPENAME enable_if< has_type< range_mutable_iterator<T> > >::type>
|
|
: boost::mpl::true_
|
|
{
|
|
};
|
|
|
|
template<class T, class Enabler = void>
|
|
struct has_range_const_iterator_impl
|
|
: boost::mpl::false_
|
|
{
|
|
};
|
|
|
|
template<class T>
|
|
struct has_range_const_iterator_impl<T, BOOST_DEDUCED_TYPENAME enable_if< has_type< range_const_iterator<T> > >::type>
|
|
: boost::mpl::true_
|
|
{
|
|
};
|
|
|
|
} // namespace range_detail
|
|
|
|
template<class T>
|
|
struct has_range_iterator
|
|
: range_detail::has_range_iterator_impl<T>
|
|
{};
|
|
|
|
template<class T>
|
|
struct has_range_const_iterator
|
|
: range_detail::has_range_const_iterator_impl<T>
|
|
{};
|
|
} // namespace boost
|
|
|
|
#endif // include guard
|
|
|