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35 lines
1.5 KiB
Swift
35 lines
1.5 KiB
Swift
// RUN: %target-swift-frontend -dump-ast %s | %FileCheck %s
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func doSomething<T>(_ t: T) {}
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// CHECK: func_decl{{.*}}"outerGeneric(t:x:)" "<T>" interface type="<T> (t: T, x: AnyObject) -> ()"
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func outerGeneric<T>(t: T, x: AnyObject) {
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// Simple case -- closure captures outer generic parameter
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// CHECK: closure_expr type="() -> ()" {{.*}} discriminator=0 nonisolated captures=(<generic> t<direct>) escaping single_expression
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_ = { doSomething(t) }
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// Special case -- closure does not capture outer generic parameters
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// CHECK: closure_expr type="() -> ()" {{.*}} discriminator=1 nonisolated captures=(x<direct>) escaping single_expression
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_ = { doSomething(x) }
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// Special case -- closure captures outer generic parameter, but it does not
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// appear as the type of any expression
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// CHECK: closure_expr type="() -> ()" {{.*}} discriminator=2 nonisolated captures=(<generic> x<direct>)
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_ = { if x is T {} }
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// Nested generic functions always capture outer generic parameters, even if
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// they're not mentioned in the function body
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// CHECK: func_decl{{.*}}"innerGeneric(u:)" "<U>" interface type="<T, U> (u: U) -> ()" {{.*}} captures=(<generic> )
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func innerGeneric<U>(u: U) {}
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// Make sure we look through typealiases
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typealias TT = (a: T, b: T)
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// CHECK: func_decl{{.*}}"localFunction(tt:)" interface type="<T> (tt: TT) -> ()" {{.*}} captures=(<generic> )
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func localFunction(tt: TT) {}
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// CHECK: closure_expr type="(TT) -> ()" {{.*}} captures=(<generic> )
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let _: (TT) -> () = { _ in }
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}
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