tree dc002615dc5055f47b3a0eb914648aeeec9864cb
parent 90b55959a43d99c7fe17f300368f2d9faa8d9e2e
author Dan Rubel <danrubel@google.com> 1560444806 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1560444806 +0000

update scanner/parser to handle null-aware index operator

This adds support for the nnbd `?.[` operator as specified in
https://github.com/dart-lang/language/pull/293/files#diff-dbeaf678924df9f8a2ca9f5d12e26d3eR11513

Change-Id: I11547cf875439fef9fe22d4f4ac5ab912b3759d1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/105902
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>