This CL adds support for anonymous block bodies (as in `e.{...}`) by
generalizing the flow analysis to handle begin/end of anonymous block
bodies and treating them similarly to labeled statements (and treating
`return` statements using `handleBreak`). It generalizes `handleBreak`
and the internal make `_StatementToContext` to handle `Node` keys rather
than just `Statement` keys, such that an anonymous block body can be the
context. It adds a `bodyContext` instance variable to
`AnonymousBodyImpl` to be used during flow analysis of anonymous block
bodies. `BodyInferenceContext` gets a new factory constructor in order
to allow an anonymous block body to be the context. Finally,
`ErrorVerifier` is generalized to handle the case where a return
statement is returning from an anonymous block body.
Change-Id: I04bc3c852611dbefb885afce655dc00054709fb7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/482786
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Erik Ernst <eernst@google.com>
Erik Ernst
9d2e96b25f