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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
48 lines
1.5 KiB
Swift
48 lines
1.5 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 6
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@ MainActor // expected-error {{extraneous whitespace between '@' and attribute name}}
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class Foo {
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func funcWithEscapingClosure(_ x: @ escaping () -> Int) {} // expected-error {{extraneous whitespace between '@' and attribute name}}
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}
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@available (*, deprecated) // expected-error {{extraneous whitespace between attribute name and '('}}
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func deprecated() {}
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@propertyWrapper
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struct MyPropertyWrapper {
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var wrappedValue: Int = 1
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init(param: Int) {}
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}
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struct PropertyWrapperTest {
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@MyPropertyWrapper (param: 2) // expected-error {{extraneous whitespace between attribute name and '('}}
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var x: Int
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@MyPropertyWrapper
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(param: 2) // expected-error {{expected 'var' keyword in property declaration}} expected-error {{property declaration does not bind any variables}} expected-error {{expected pattern}}
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var y: Int
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}
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let closure1 = { @MainActor (a, b) in
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// expected-error@-1 {{cannot infer type of closure parameter 'a' without a type annotation}}
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// expected-error@-2 {{cannot infer type of closure parameter 'b' without a type annotation}}
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}
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let closure2 = { @MainActor
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(a: Int, b: Int) in
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let _: Int = a
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}
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// expected-error@+1 {{extraneous whitespace between '@' and attribute name}}
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@
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MainActor
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func mainActorFunc() {}
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@inline // expected-error {{expected '(' in 'inline' attribute}}
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(never) func neverInline() {} // expected-error {{expected declaration}}
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@objc
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(whatever) func whateverObjC() {} // expected-error {{expected declaration}}
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