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synced 2025-12-14 20:36:38 +01:00
f1a8740ba5
Previously, typechecking and SILGen would treat a function body as fragile as long as the declaration had a `@backDeployed` attribute, regardless of the platform specified by the attribute. This was overly conservative since back deployed functions are only emitted into the client on specific platforms. Now a `@backDeployed` function can reference non-`public` declarations on the platforms it is resilient on:
```
@backDeployed(before: iOS 15)
public func foo() {
#if os(iOS)
// Fragile; this code may be emitted into the client.
#else
// Resilient; this code won't ever be exposed to clients.
#endif
}
```
Resolves rdar://105298520
87 lines
3.1 KiB
Swift
87 lines
3.1 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-emit-module-interface(%t/Test.swiftinterface) %s \
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// RUN: -define-availability "_macOS12_1:macOS 12.1" \
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// RUN: -define-availability "_myProject 1.0:macOS 12.1, iOS 15.1"
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// RUN: %target-swift-typecheck-module-from-interface(%t/Test.swiftinterface)
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// RUN: %FileCheck %s < %t/Test.swiftinterface
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// REQUIRES: OS=macosx
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public struct TopLevelStruct {
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// TODO: Print `@backDeployed` in swiftinterfaces (rdar://104920183)
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// CHECK: @_backDeploy(before: macOS 12.0)
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// CHECK: public func backDeployedFunc_SinglePlatform() -> Swift.Int { return 41 }
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@backDeployed(before: macOS 12.0)
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public func backDeployedFunc_SinglePlatform() -> Int { return 41 }
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// CHECK: @_backDeploy(before: macOS 12.0, iOS 15.0)
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// CHECK: public func backDeployedFunc_MultiPlatform() -> Swift.Int { return 42 }
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@backDeployed(before: macOS 12.0, iOS 15.0)
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public func backDeployedFunc_MultiPlatform() -> Int { return 42 }
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// CHECK: @_backDeploy(before: macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0)
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// CHECK: public func backDeployedFunc_MultiPlatformSeparate() -> Swift.Int { return 43 }
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@backDeployed(before: macOS 12.0)
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@backDeployed(before: iOS 15.0)
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@backDeployed(before: watchOS 8.0)
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@backDeployed(before: tvOS 15.0)
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public func backDeployedFunc_MultiPlatformSeparate() -> Int { return 43 }
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// CHECK: @_backDeploy(before: macOS 12.0)
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// CHECK: public var backDeployedComputedProperty: Swift.Int {
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// CHECK-NEXT: get { 44 }
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// CHECK-NEXT: }
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@backDeployed(before: macOS 12.0)
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public var backDeployedComputedProperty: Int { 44 }
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// CHECK: @_backDeploy(before: macOS 12.0)
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// CHECK: public var backDeployedPropertyWithAccessors: Swift.Int {
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// CHECK-NEXT: get { 45 }
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// CHECK-NEXT: }
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@backDeployed(before: macOS 12.0)
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public var backDeployedPropertyWithAccessors: Int {
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get { 45 }
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}
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// CHECK: @_backDeploy(before: macOS 12.0)
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// CHECK: public subscript(index: Swift.Int) -> Swift.Int {
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// CHECK-NEXT: get { 46 }
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// CHECK-NEXT: }
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@backDeployed(before: macOS 12.0)
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public subscript(index: Int) -> Int {
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get { 46 }
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}
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}
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// CHECK: @_backDeploy(before: iOS 15.0)
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// CHECK: public func backDeployedFunc_iOSOnly() -> Swift.Int
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// CHECK-NOT: return 99
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@backDeployed(before: iOS 15.0)
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public func backDeployedFunc_iOSOnly() -> Int { return 99 }
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// CHECK: @_backDeploy(before: macOS 12.0)
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// CHECK: public func backDeployTopLevelFunc_macOS() -> Swift.Int {
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// CHECK-NEXT: return 47
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// CHECK-NEXT: }
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// CHECK-NOT: fatalError()
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@backDeployed(before: macOS 12.0)
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public func backDeployTopLevelFunc_macOS() -> Int {
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#if os(macOS)
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return 47
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#else
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fatalError()
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#endif
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}
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// MARK: - Availability macros
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// CHECK: @_backDeploy(before: macOS 12.1)
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// CHECK: public func backDeployTopLevelFunc_macOS12_1() -> Swift.Int { return 48 }
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@backDeployed(before: _macOS12_1)
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public func backDeployTopLevelFunc_macOS12_1() -> Int { return 48 }
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// CHECK: @_backDeploy(before: macOS 12.1, iOS 15.1)
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// CHECK: public func backDeployTopLevelFunc_myProject() -> Swift.Int { return 49 }
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@backDeployed(before: _myProject 1.0)
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public func backDeployTopLevelFunc_myProject() -> Int { return 49 }
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