| commit | 8f52be2282e9abaad422a79116f77f33bf8e8015 | [log] [tgz] |
|---|---|---|
| author | Paul Berry <paulberry@google.com> | Thu May 03 23:27:14 2018 +0000 |
| committer | commit-bot@chromium.org <commit-bot@chromium.org> | Thu May 03 23:27:14 2018 +0000 |
| tree | f25f394285ebfe57cdbcd56400897f1f7c50bd77 | |
| parent | dfa661d4602a19abd5a854ffd99c0193fe47e3b2 [diff] |
Don't infer types when there's an irreconcilable type mismatch. Also fix the type inference algorithm so that when it explores multiple alternatives (as a result of the use of FutureOr<>), if one alternative generated some constraints but failed to produce a match, it rewinds those constraints and tries the other alternative. (Previously, it erroneously assumed that if any constraints were generated, the alternative matched successfully). Also add unit tests to verify the proper operation of the subtype match algorithm. Fixes #32305. Change-Id: I060b5d6d5247a68d2b27bba78819bae172e43d97 Reviewed-on: https://dart-review.googlesource.com/53685 Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Jenny Messerly <jmesserly@google.com>
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