Although these error conditions are not reported by the parser, the
language grammar does not permit them, so from a customer perspective
they are parser errors. Accordingly, they have been assigned
ParserErrorCodes and reported by the AstBuilder, as we do for other
similar errors.
Change-Id: I79d0ad1dcad518981b8b649c117df326279008f7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/157800
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Paul Berry
87f0d5d9dc