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9c91d1b705
Calling `getInnermostDeclContext()->getParentSourceFile()` on a macro-produced decl does not seem to be a reliable way to obtain the macro expansion source file, because `PatternBindingDecl` is not a `DeclContext` and `getInnermostDeclContext()` falls back outside the macro expansion file. This patch switches to using `getSourceFileContainingLocation` when possible. Resolves rdar://109376568.
44 lines
1.5 KiB
Swift
44 lines
1.5 KiB
Swift
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public protocol Observable {}
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public protocol Observer<Subject> {
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associatedtype Subject: Observable
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}
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public struct ObservationRegistrar<Subject: Observable> {
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public init() {}
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public func addObserver(_ observer: some Observer<Subject>) {}
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public func removeObserver(_ observer: some Observer<Subject>) {}
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public func beginAccess<Value>(_ keyPath: KeyPath<Subject, Value>) {}
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public func beginAccess() {}
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public func endAccess() {}
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public func register<Value>(observable: Subject, willSet: KeyPath<Subject, Value>, to: Value) {}
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public func register<Value>(observable: Subject, didSet: KeyPath<Subject, Value>) {}
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}
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@attached(
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member,
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names: named(_registrar), named(addObserver), named(removeObserver), named(withTransaction), named(Storage), named(_storage)
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)
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@attached(memberAttribute)
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public macro Observable() = #externalMacro(module: "MacroDefinition", type: "ObservableMacro")
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@attached(accessor)
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public macro ObservableProperty() = #externalMacro(module: "MacroDefinition", type: "ObservablePropertyMacro")
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@attached(peer, names: overloaded)
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public macro addCompletionHandler() = #externalMacro(module: "MacroDefinition", type: "AddCompletionHandler")
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@attached(peer, names: suffixed(Builder))
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public macro AddClassReferencingSelf() = #externalMacro(module: "MacroDefinition", type: "AddClassReferencingSelfMacro")
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@attached(peer, names: named(value))
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public macro declareVarValuePeer() = #externalMacro(module: "MacroDefinition", type: "VarValueMacro")
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