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b119407966
In Swift 6 and later, whitespace is no longer permitted between an
attribute name and the opening parenthesis. Update the parser so that
in Swift 6+, a `(` without preceding whitespace is always treated as
the start of the argument list, while a '(' with preceding whitespace is
considered the start of the argument list _only when_ it is unambiguous.
This change makes the following closure be parsed correctly:
{ @MainActor (arg: Int) in ... }
rdar://147785544
73 lines
1.8 KiB
Swift
73 lines
1.8 KiB
Swift
// RUN: %target-typecheck-verify-swift -enable-experimental-feature DefaultIsolationPerFile
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// REQUIRES: swift_feature_DefaultIsolationPerFile
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// REQUIRES: concurrency
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using @MainActor
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// expected-note@-1 {{default isolation was previously declared here}}
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using nonisolated
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// expected-error@-1 {{invalid redeclaration of file-level default actor isolation}}
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using @Test // expected-error {{default isolation can only be set to '@MainActor' or 'nonisolated'}}
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using test // expected-error {{default isolation can only be set to '@MainActor' or 'nonisolated'}}
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do {
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using // expected-warning {{expression of type 'Int' is unused}}
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@MainActor
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// expected-error@+1 {{expected declaration}}
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}
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do {
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using // expected-warning {{expression of type 'Int' is unused}}
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nonisolated // expected-error {{cannot find 'nonisolated' in scope}}
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}
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do {
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func
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using (x: Int) {}
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using(x: 42)
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}
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do {
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func
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using
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(x: Int) {}
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using(x: 42)
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}
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let
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using = 42
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let (x: Int, using: String) = (x: 42, using: "")
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do {
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using @MainActor // expected-error {{declaration is only valid at file scope}}
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}
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func test() {
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using @MainActor // expected-error {{declaration is only valid at file scope}}
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}
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struct S {
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var x: Int {
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using @MainActor // expected-error {{declaration is only valid at file scope}}
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}
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using @MainActor func test() {}
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// expected-error@-1 {{declaration is only valid at file scope}}
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// expected-error@-2 {{consecutive declarations on a line must be separated by ';'}}
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using nonisolated subscript(a: Int) -> Bool { false }
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// expected-error@-1 {{declaration is only valid at file scope}}
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// expected-error@-2 {{consecutive declarations on a line must be separated by ';'}}
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}
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do {
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@objc using @MainActor
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// expected-error@-1 {{declaration is only valid at file scope}}
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}
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