[SwiftParser] SE-0478: Implement using declaration under an experim…
#3087
Conversation
xedin
requested review from
ahoppen,
bnbarham,
hamishknight and
rintaro
as code owners
|
swiftlang/swift#81863 |
|
swiftlang/swift#81863 |
|
swiftlang/swift#81863 |
| precondition(attrs.attributes.isEmpty) | ||
| precondition(attrs.modifiers.isEmpty) | ||
|
|
There was a problem hiding this comment.
I don’t think we necessarily need to crash the parser if attrs.attributes or attrs.modifiers is not empty. instead, we can shove them into unexpectedBeforeUsingKeyword. If for some reason they end up being non-nil that gives the user a better diagnostic that they can go off (plus doesn’t crash source tooling).
There was a problem hiding this comment.
Sure, I can look into that, thanks!
There was a problem hiding this comment.
@ahoppen does https://github.com/swiftlang/swift-syntax/pull/3087/files#diff-c777f9d3f9b258a7fc0c0f38f58e174c935a477c5bc8612a46c78bb23beba172R472-R493 makes sense or there is a better way?
…ental feature This is an alternative spelling of `typealias DefaultIsolation = (MainActor | nonisolated)` that was proposed as part of SE-0478. `using` declaration accepts an attribute or a modifier and currently could be used to set a default actor isolation per file, but could be extended to support other use-cases in the future. Implementation uses `DefaultIsolationPerFile` experimental feature flag to hide the syntax.
|
swiftlang/swift#81863 |
|
swiftlang/swift#81863 |
…ental feature
This is an alternative spelling of
typealias DefaultIsolation = (MainActor | nonisolated)that was proposed as part of SE-0478.usingdeclaration accepts an attribute or a modifier and currently could be used to set a default actor isolation per file, but could be extended to support other use-cases in the future.Implementation uses
DefaultIsolationPerFileexperimental feature flag to hide the syntax.