0c90e06932
This CL changes $SDK/tools/spec_parser/Dart.g to include grammar rules associated with the upcoming feature 'patterns'. Change-Id: I3c8a5404471b0957d8e2a2b833156e02bbd3607b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/266628 Commit-Queue: William Hesse <whesse@google.com> Auto-Submit: Erik Ernst <eernst@google.com> Reviewed-by: William Hesse <whesse@google.com>