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Extend internal _mangledTypeName() function to take non-copyable types. (#76041)

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`_mangledTypeName()` returns the Swift-mangled typename of a given type. This PR extends it to take non-copyable types as well.

Related to our use case in Swift Testing, but not to the PR directly: #69146 #69147 #71112

Resolves rdar://134278607.
This commit is contained in:
Jonathan Grynspan
2024-09-11 16:11:58 -04:00
committed by GitHub
parent 1ce178bc11
commit db7a030a71
2 changed files with 11 additions and 2 deletions
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6
stdlib/public/core/Misc.swift
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@@ -97,14 +97,16 @@ func _typeName(_ type: Any.Type, qualified: Bool = true) -> String {
@available(SwiftStdlib 5.3, *) @available(SwiftStdlib 5.3, *)
@_silgen_name("swift_getMangledTypeName") @_silgen_name("swift_getMangledTypeName")
public func _getMangledTypeName(_ type: Any.Type) @_preInverseGenerics
public func _getMangledTypeName(_ type: any ~Copyable.Type)
-> (UnsafePointer<UInt8>, Int) -> (UnsafePointer<UInt8>, Int)
/// Returns the mangled name for a given type. /// Returns the mangled name for a given type.
@available(SwiftStdlib 5.3, *) @available(SwiftStdlib 5.3, *)
@_unavailableInEmbedded @_unavailableInEmbedded
@_preInverseGenerics
public // SPI public // SPI
func _mangledTypeName(_ type: Any.Type) -> String? { func _mangledTypeName(_ type: any ~Copyable.Type) -> String? {
let (stringPtr, count) = _getMangledTypeName(type) let (stringPtr, count) = _getMangledTypeName(type)
guard count > 0 else { guard count > 0 else {
return nil return nil

7
test/Runtime/demangleToMetadata.swift
View File

@@ -493,6 +493,8 @@ DemangleToMetadataTests.test("Nested types in same-type-constrained extensions")
// V !: P3 in InnerTEqualsConformsToP1 // V !: P3 in InnerTEqualsConformsToP1
} }
struct NonCopyable: ~Copyable {}
if #available(SwiftStdlib 5.3, *) { if #available(SwiftStdlib 5.3, *) {
DemangleToMetadataTests.test("Round-trip with _mangledTypeName and _typeByName") { DemangleToMetadataTests.test("Round-trip with _mangledTypeName and _typeByName") {
func roundTrip<T>(_ type: T.Type) { func roundTrip<T>(_ type: T.Type) {
@@ -524,6 +526,11 @@ if #available(SwiftStdlib 5.3, *) {
let type: Any.Type = Int.self let type: Any.Type = Int.self
expectEqual("Si", _mangledTypeName(type)) expectEqual("Si", _mangledTypeName(type))
} }
DemangleToMetadataTests.test("Check _MangledTypeName with any ~Copyable.Type") {
let type: any ~Copyable.Type = NonCopyable.self
expectEqual("4main11NonCopyableV", _mangledTypeName(type))
}
} }
if #available(SwiftStdlib 5.1, *) { if #available(SwiftStdlib 5.1, *) {