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46 lines
1.1 KiB
Swift
46 lines
1.1 KiB
Swift
// RUN: %target-swift-ide-test -print-indexed-symbols -source-filename %s | %FileCheck -check-prefix=CHECK %s
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struct Tagged<Tag, Entity> {
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let tag: Tag
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let entity: Entity
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}
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protocol Taggable {
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}
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extension Taggable {
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func tag<Tag>(_ tag: Tag) -> Tagged<Tag, Self> {
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return Tagged(tag: tag, entity: self)
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}
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}
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extension Int: Taggable { }
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extension String: Taggable { }
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extension Double: Taggable { }
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@_functionBuilder
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struct TaggedBuilder<Tag> {
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static func buildBlock() -> () { }
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static func buildBlock<T1>(_ t1: Tagged<Tag, T1>) -> Tagged<Tag, T1> {
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return t1
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}
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static func buildBlock<T1, T2>(_ t1: Tagged<Tag, T1>, _ t2: Tagged<Tag, T2>) -> (Tagged<Tag, T1>, Tagged<Tag, T2>) {
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return (t1, t2)
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}
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static func buildIf<T>(_ value: Tagged<Tag, T>?) -> Tagged<Tag, T>? { return value }
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}
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enum Color {
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case red, green, blue
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}
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func acceptColorTagged<Result>(@TaggedBuilder<Color> body: () -> Result) {
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print(body())
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}
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// CHECK: 40:33 | struct/Swift | TaggedBuilder | s:14swift_ide_test13TaggedBuilderV | Ref,RelCont | rel: 1
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// CHECK: 40:47 | enum/Swift | Color | s:14swift_ide_test5ColorO | Ref,RelCont | rel: 1
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