It's a badly designed class, but this change makes it slightly better.
(We should consider moving it to package:collection and removing it from
the platform libraries. Eventually.)
The changes decouples the public `DoubleLinkedQueueEntry` class from
the actual queue implementation classes, avoiding the latter having
to share a generic `_Link<DoubleLinkedQueueEntry>` interface
which would force them to do otherwise unnecessary casts.
The public class should have been abstract, but isn't.
It's mainly used as the API of the entries exposed by DoubleLinkedQueue,
but it can also be used by itself to build double-linked lists that are
not part of a Queue, and the class can be extended.
If anyone does either, it should keep working, so it needs to be a concrete,
self-contained class with a generative constructor.
That class is moved to dart:_internal to avoid its private
implementation fields from interfering with the queue implementation classes,
which have similar fields, but can now have them at different types.
That's a hack, but it works.
The internal implementation of the DoubleLinkedQueue and its entries
are updated to better follow current programming idioms, and avoids
having fields on classes which don't need them.
Also fixes#27920
(`clear`ing a list now detaches each entry from the list so later `.contains`
won't give the wrong answer).
And moves queue tests from tests/corelib to tests/lib/collection,
since Queue isn't exposed by `dart:core`.
BUG= https://github.com/dart-lang/sdk/issues/27920
Change-Id: Ia3bb340a75886de160cc0e449947e8e7ee587061
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/211265
Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
Made it explicit in the documentation that elements of the `LinkedList`
are compared using identity, not `operator==`, even if they choose to
override that.
The linked list entries are directly linked to their containing list,
which is what defined their containing list. Merely being equal to an entry
of a list does not make another entry belong to that list.
The `contains` method now simply checks that the `list` property of the
the provided entry is the list itself, which matches the existing behavior
of `remove`.
Fixes#44189.
Bug: https://github.com/dart-lang/sdk/issues/44189
Change-Id: Ia6a7fd461ddf18f99121662f87e83415746e1ca4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/172161
Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
This deletes:
tests/co19
tests/corelib
tests/html
tests/isolate
tests/language
tests/lib
It does not delete tests/standalone because apparently there are tests
in there that are not in standalone_2. (I assume they were added after
the test migration. I don't know why they were added there.)
I have tried to remove references to the old tests from various scripts
and tools but may have missed some. (As you can imagine, grepping for
"lib" does not have the best signal-to-noise ratio.)
"It was a pleasure to burn. It was a special pleasure to see things
eaten, to see things blackened and changed. With the brass nozzle in his
fists, with this great python spitting its venomous kerosene upon the
world, the blood pounded in his head, and his hands were the hands of
some amazing conductor playing all the symphonies of blazing and burning
to bring down the tatters and charcoal ruins of history."
- Ray Bradbury, Fahrenheit 451
Change-Id: If3db4a50e7a5ee25aff8058b1483e2ce8e68424e
Reviewed-on: https://dart-review.googlesource.com/c/75420
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Terry Lucas <terry@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
There are far too many files here to review everyone carefully.
Spot checking most of the diffs look good as test code is generally written
with less care than application code so lots of ugly formatting get through.
If people notice files where the automated formatting bothers them feel free
to comment indicating file names and I'll move spaces within comments to make
the formatting cleaner and use comments to force block formatting as I have
done for other case where formatting looked bad.
BUG=
R=efortuna@google.com
Review-Url: https://codereview.chromium.org/2771453003 .
