157c14a387
This is another piece of P1206R7, adding from_range constructor, append_range, prepend_range, insert_range, and assign_range members to std::deque. For append_front of input non-sized range, we are emplacing element at the front and then reverse inserted elements. This does not existing elements, and properly handle aliasing ranges. For insert_range, the handling of insertion in the middle of input-only ranges that are sized could be optimized, we still insert nodes one-by-one in such case. For forward and stronger ranges, we reduce them to common_range case, by computing the iterator when computing the distance. This is slightly suboptimal, as it require range to be iterated for non-common forward ranges that are sized, but reduces number of instantiations. This patch extract _M_range_prepend, _M_range_append helper functions that accepts (iterator, sentinel) pair. This all used in all standard modes. PR libstdc++/111055 libstdc++-v3/ChangeLog: * include/bits/deque.tcc (deque::prepend_range, deque::append_range) (deque::insert_range, __advance_dist): Define. (deque::_M_range_prepend, deque::_M_range_append): Extract from _M_range_insert_aux for _ForwardIterator(s). * include/bits/stl_deque.h (deque::assign_range): Define. (deque::prepend_range, deque::append_range, deque::insert_range): Declare. (deque(from_range_t, _Rg&&, const allocator_type&)): Define constructor and deduction guide. * include/debug/deque (deque::prepend_range, deque::append_range) (deque::assign_range): Define. (deque(from_range_t, _Rg&&, const allocator_type&)): Define constructor and deduction guide. * testsuite/23_containers/deque/cons/from_range.cc: New test. * testsuite/23_containers/deque/modifiers/append_range.cc: New test. * testsuite/23_containers/deque/modifiers/assign/assign_range.cc: New test. * testsuite/23_containers/deque/modifiers/prepend_range.cc: New test. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> Signed-off-by: Tomasz Kamiński <tkaminsk@redhat.com> |
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