[PATCH] D39855: [ADT] Rewrite mapped_iterator in terms of iterator_adaptor_base.

[Lang Hames via Phabricator via llvm-commits]

lhames created this revision.
Herald added a subscriber: mgorny.

This eliminates the boilerplate implementation of the iterator interface in
mapped_iterator.

This patch also adds unit tests that verify that the mapped function is applied
by operator* and operator->, and that references returned by the map function
are returned via operator*.


https://reviews.llvm.org/D39855

Files:
  include/llvm/ADT/STLExtras.h
  unittests/ADT/CMakeLists.txt
  unittests/ADT/MappedIteratorTest.cpp

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