diff options
Diffstat (limited to 'boost/container/detail/copy_move_algo.hpp')
| -rw-r--r-- | boost/container/detail/copy_move_algo.hpp | 71 |
1 files changed, 40 insertions, 31 deletions
diff --git a/boost/container/detail/copy_move_algo.hpp b/boost/container/detail/copy_move_algo.hpp index 79cbde80a9..23fa730838 100644 --- a/boost/container/detail/copy_move_algo.hpp +++ b/boost/container/detail/copy_move_algo.hpp @@ -123,48 +123,49 @@ struct are_elements_contiguous< ::boost::interprocess::offset_ptr<PointedType, D template <typename I, typename O> struct are_contiguous_and_same -{ - static const bool is_same_io = - is_same< typename remove_const< typename ::boost::container::iterator_traits<I>::value_type >::type - , typename ::boost::container::iterator_traits<O>::value_type - >::value; - static const bool value = is_same_io && - are_elements_contiguous<I>::value && - are_elements_contiguous<O>::value; -}; + : boost::move_detail::and_ + < are_elements_contiguous<I> + , are_elements_contiguous<O> + , is_same< typename remove_const< typename ::boost::container::iterator_traits<I>::value_type >::type + , typename ::boost::container::iterator_traits<O>::value_type + > + > +{}; template <typename I, typename O> struct is_memtransfer_copy_assignable -{ - static const bool value = are_contiguous_and_same<I, O>::value && - container_detail::is_trivially_copy_assignable< typename ::boost::container::iterator_traits<I>::value_type >::value; -}; + : boost::move_detail::and_ + < are_contiguous_and_same<I, O> + , container_detail::is_trivially_copy_assignable< typename ::boost::container::iterator_traits<I>::value_type > + > +{}; template <typename I, typename O> struct is_memtransfer_copy_constructible -{ - static const bool value = are_contiguous_and_same<I, O>::value && - container_detail::is_trivially_copy_constructible< typename ::boost::container::iterator_traits<I>::value_type >::value; -}; + : boost::move_detail::and_ + < are_contiguous_and_same<I, O> + , container_detail::is_trivially_copy_constructible< typename ::boost::container::iterator_traits<I>::value_type > + > +{}; template <typename I, typename O, typename R> struct enable_if_memtransfer_copy_constructible - : enable_if_c<container_detail::is_memtransfer_copy_constructible<I, O>::value, R> + : enable_if<container_detail::is_memtransfer_copy_constructible<I, O>, R> {}; template <typename I, typename O, typename R> struct disable_if_memtransfer_copy_constructible - : enable_if_c<!container_detail::is_memtransfer_copy_constructible<I, O>::value, R> + : disable_if<container_detail::is_memtransfer_copy_constructible<I, O>, R> {}; template <typename I, typename O, typename R> struct enable_if_memtransfer_copy_assignable - : enable_if_c<container_detail::is_memtransfer_copy_assignable<I, O>::value, R> + : enable_if<container_detail::is_memtransfer_copy_assignable<I, O>, R> {}; template <typename I, typename O, typename R> struct disable_if_memtransfer_copy_assignable - : enable_if_c<!container_detail::is_memtransfer_copy_assignable<I, O>::value, R> + : disable_if<container_detail::is_memtransfer_copy_assignable<I, O>, R> {}; template @@ -174,8 +175,10 @@ inline F memmove(I f, I l, F r) BOOST_NOEXCEPT_OR_NOTHROW { typedef typename boost::container::iterator_traits<I>::value_type value_type; typename boost::container::iterator_traits<I>::difference_type n = boost::container::iterator_distance(f, l); - std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); - boost::container::iterator_advance(r, n); + if(n){ + std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); + boost::container::iterator_advance(r, n); + } return r; } @@ -185,8 +188,10 @@ template F memmove_n(I f, typename boost::container::iterator_traits<I>::difference_type n, F r) BOOST_NOEXCEPT_OR_NOTHROW { typedef typename boost::container::iterator_traits<I>::value_type value_type; - std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); - boost::container::iterator_advance(r, n); + if(n){ + std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); + boost::container::iterator_advance(r, n); + } return r; } @@ -195,9 +200,11 @@ template typename F> // F models ForwardIterator I memmove_n_source(I f, typename boost::container::iterator_traits<I>::difference_type n, F r) BOOST_NOEXCEPT_OR_NOTHROW { - typedef typename boost::container::iterator_traits<I>::value_type value_type; - std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); - boost::container::iterator_advance(f, n); + if(n){ + typedef typename boost::container::iterator_traits<I>::value_type value_type; + std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); + boost::container::iterator_advance(f, n); + } return f; } @@ -207,9 +214,11 @@ template I memmove_n_source_dest(I f, typename boost::container::iterator_traits<I>::difference_type n, F &r) BOOST_NOEXCEPT_OR_NOTHROW { typedef typename boost::container::iterator_traits<I>::value_type value_type; - std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); - boost::container::iterator_advance(f, n); - boost::container::iterator_advance(r, n); + if(n){ + std::memmove((iterator_to_raw_pointer)(r), (iterator_to_raw_pointer)(f), sizeof(value_type)*n); + boost::container::iterator_advance(f, n); + boost::container::iterator_advance(r, n); + } return f; } |