This converts `return e` in async methods in opt-in libraries into
return let v = e in v is Future<FTV> ? await v ; v
where FTV is the future value type of the enclosing function.
Closes#44395Closes#44396Closes#44397Closes#44399
TEST=existing tests
Change-Id: I59687039bfe4a97ffdaa55ac0f193ca4fb208f44
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/175310
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
This CL adds stub for each concrete mixed in member into mixin
applications. The body of the stub calls the original member via
a super call.
This addition means that resolution of super access now use the
stub and not the original declaration as the target, which means
that it will be correct even when mixed in members are cloned. For
this reason, dart2js no longer needs to perform its own super
member resolution.
When a super call targets a mixin super stub (after cloning) it
can be optimized away by redirecting the call to the `stubTarget`
of the call. This optimization is performed in dart2js.
Since dart2js now uses the correct super target, its runtime
mixin application needs to avoid overriding members already
declared in the mixin application. These members are the
forwarding super stubs which ensure that correct runtime types
when members with covariant parameters are implemented.
Change-Id: Iab71ffcc400aa6a683987bc20b9553a263ebc8e1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/176526
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
asiva