// Copyright Neil Groves 2009. 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_ALGORITHM_SWAP_RANGES_HPP_INCLUDED | |
#define BOOST_RANGE_ALGORITHM_SWAP_RANGES_HPP_INCLUDED | |
#include <boost/assert.hpp> | |
#include <boost/concept_check.hpp> | |
#include <boost/iterator/iterator_categories.hpp> | |
#include <boost/range/begin.hpp> | |
#include <boost/range/end.hpp> | |
#include <boost/range/concepts.hpp> | |
#include <boost/range/iterator.hpp> | |
#include <algorithm> | |
namespace boost | |
{ | |
namespace range_detail | |
{ | |
template<class Iterator1, class Iterator2> | |
void swap_ranges_impl(Iterator1 it1, Iterator1 last1, | |
Iterator2 it2, Iterator2 last2, | |
single_pass_traversal_tag, | |
single_pass_traversal_tag) | |
{ | |
ignore_unused_variable_warning(last2); | |
for (; it1 != last1; ++it1, ++it2) | |
{ | |
BOOST_ASSERT( it2 != last2 ); | |
std::iter_swap(it1, it2); | |
} | |
} | |
template<class Iterator1, class Iterator2> | |
void swap_ranges_impl(Iterator1 it1, Iterator1 last1, | |
Iterator2 it2, Iterator2 last2, | |
random_access_traversal_tag, | |
random_access_traversal_tag) | |
{ | |
ignore_unused_variable_warning(last2); | |
BOOST_ASSERT( last2 - it2 >= last1 - it1 ); | |
std::swap_ranges(it1, last1, it2); | |
} | |
template<class Iterator1, class Iterator2> | |
void swap_ranges_impl(Iterator1 first1, Iterator1 last1, | |
Iterator2 first2, Iterator2 last2) | |
{ | |
swap_ranges_impl(first1, last1, first2, last2, | |
BOOST_DEDUCED_TYPENAME iterator_traversal<Iterator1>::type(), | |
BOOST_DEDUCED_TYPENAME iterator_traversal<Iterator2>::type()); | |
} | |
} // namespace range_detail | |
namespace range | |
{ | |
/// \brief template function swap_ranges | |
/// | |
/// range-based version of the swap_ranges std algorithm | |
/// | |
/// \pre SinglePassRange1 is a model of the SinglePassRangeConcept | |
/// \pre SinglePassRange2 is a model of the SinglePassRangeConcept | |
template< class SinglePassRange1, class SinglePassRange2 > | |
inline SinglePassRange2& | |
swap_ranges(SinglePassRange1& range1, SinglePassRange2& range2) | |
{ | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<SinglePassRange1>)); | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<SinglePassRange2>)); | |
boost::range_detail::swap_ranges_impl( | |
boost::begin(range1), boost::end(range1), | |
boost::begin(range2), boost::end(range2)); | |
return range2; | |
} | |
/// \overload | |
template< class SinglePassRange1, class SinglePassRange2 > | |
inline SinglePassRange2& | |
swap_ranges(const SinglePassRange1& range1, SinglePassRange2& range2) | |
{ | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange1>)); | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<SinglePassRange2>)); | |
boost::range_detail::swap_ranges_impl( | |
boost::begin(range1), boost::end(range1), | |
boost::begin(range2), boost::end(range2)); | |
return range2; | |
} | |
/// \overload | |
template< class SinglePassRange1, class SinglePassRange2 > | |
inline const SinglePassRange2& | |
swap_ranges(SinglePassRange1& range1, const SinglePassRange2& range2) | |
{ | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<SinglePassRange1>)); | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange2>)); | |
boost::range_detail::swap_ranges_impl( | |
boost::begin(range1), boost::end(range1), | |
boost::begin(range2), boost::end(range2)); | |
return range2; | |
} | |
/// \overload | |
template< class SinglePassRange1, class SinglePassRange2 > | |
inline const SinglePassRange2& | |
swap_ranges(const SinglePassRange1& range1, const SinglePassRange2& range2) | |
{ | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange1>)); | |
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange2>)); | |
boost::range_detail::swap_ranges_impl( | |
boost::begin(range1), boost::end(range1), | |
boost::begin(range2), boost::end(range2)); | |
return range2; | |
} | |
} // namespace range | |
using range::swap_ranges; | |
} // namespace boost | |
#endif // include guard |