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793b3326af
The rule changes are as follows: * All functions (introduced with the 'func' keyword) have argument labels for arguments beyond the first, by default. Methods are no longer special in this regard. * The presence of a default argument no longer implies an argument label. The actual changes to the parser and printer are fairly simple; the rest of the noise is updating the standard library, overlays, tests, etc. With the standard library, this change is intended to be API neutral: I've added/removed #'s and _'s as appropriate to keep the user interface the same. If we want to separately consider using argument labels for more free functions now that the defaults in the language have shifted, we can tackle that separately. Fixes rdar://problem/17218256. Swift SVN r27704
99 lines
2.3 KiB
Swift
99 lines
2.3 KiB
Swift
// RUN: %target-run-simple-swift | FileCheck %s
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struct S {}
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struct Q {}
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func printMetatype<T>(x: Any, _: T.Type) {
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println(x as! T.Type)
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}
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func printMetatypeConditional<T>(x: Any, _: T.Type) {
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if let y = x as? T.Type {
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println(y)
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} else {
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println("nope")
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}
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}
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var any: Any = S.self
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// CHECK: downcast in substituted context:
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println("downcast in substituted context:")
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// CHECK-NEXT: main.S
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println(any as! S.Type)
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// CHECK-NEXT: nope
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if let q = any as? Q.Type {
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println(q)
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} else {
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println("nope")
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}
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// CHECK-NEXT: downcast in generic context:
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println("downcast in generic context:")
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// CHECK-NEXT: main.S
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printMetatype(any, S.self)
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// CHECK-NEXT: main.S
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printMetatypeConditional(any, S.self)
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// CHECK-NEXT: nope
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printMetatypeConditional(any, Q.self)
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// Unspecialized wrapper around sizeof(T) to force us to get the runtime's idea
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// of the size of a type.
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@inline(never)
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func unspecializedSizeOf<T>(t: T.Type) -> Int {
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return sizeof(t)
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}
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struct ContainsTrivialMetatype<T> {
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var x: T
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var meta: S.Type
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}
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struct ContainsTupleOfTrivialMetatype<T> {
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var x: (T, S.Type)
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}
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// CHECK-NEXT: 8
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println(sizeof(ContainsTrivialMetatype<Int64>.self))
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// CHECK-NEXT: 8
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println(unspecializedSizeOf(ContainsTrivialMetatype<Int64>.self))
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// CHECK-NEXT: 8
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println(sizeof(ContainsTupleOfTrivialMetatype<Int64>.self))
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// CHECK-NEXT: 8
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println(unspecializedSizeOf(ContainsTupleOfTrivialMetatype<Int64>.self))
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struct ContainsTupleOfFunctions<T> {
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var x: (T, T -> T)
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func apply() -> T {
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return x.1(x.0)
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}
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}
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// CHECK-NEXT: 2
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println(sizeof(ContainsTupleOfFunctions<()>.self) / sizeof(Int.self))
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// CHECK-NEXT: 2
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println(unspecializedSizeOf(ContainsTupleOfFunctions<()>.self) / sizeof(Int.self))
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// CHECK-NEXT: 3
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println(sizeof(ContainsTupleOfFunctions<Int>.self) / sizeof(Int.self))
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// CHECK-NEXT: 3
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println(unspecializedSizeOf(ContainsTupleOfFunctions<Int>.self) / sizeof(Int.self))
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let x = ContainsTupleOfFunctions(x: (1, { $0 + 1 }))
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let y = ContainsTupleOfFunctions(x: ("foo", { $0 + "bar" }))
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// CHECK-NEXT: 2
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println(x.apply())
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// CHECK-NEXT: foobar
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println(y.apply())
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func callAny<T>(f: Any, _ x: T) -> T {
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return (f as! T -> T)(x)
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}
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any = {(x: Int) -> Int in x + x}
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// CHECK-NEXT: 24
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println((any as! Int -> Int)(12))
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// CHECK-NEXT: 24
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println(callAny(any, 12))
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