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Work around a retroactive conformance bug in Swift 6.2 #3177

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Merged
merged 1 commit into from
Oct 28, 2025
Merged

Work around a retroactive conformance bug in Swift 6.2 #3177

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2 changes: 2 additions & 0 deletions ...templates/swiftsyntaxbuilder/SyntaxExpressibleByStringInterpolationConformancesFile.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,8 @@ let syntaxExpressibleByStringInterpolationConformancesFile = SourceFileSyntax(le
"""
#if compiler(>=6)
extension \(type): Swift.ExpressibleByStringInterpolation {}
// Work around https://github.com/swiftlang/swift/issues/85153 by restating the implicit conformances.
extension \(type): Swift.ExpressibleByStringLiteral, Swift.ExpressibleByExtendedGraphemeClusterLiteral, Swift.ExpressibleByUnicodeScalarLiteral {}
#endif
"""
)
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10 changes: 10 additions & 0 deletions Sources/SwiftSyntaxBuilder/Syntax+StringInterpolation.swift
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Expand Up @@ -467,6 +467,10 @@ extension TokenSyntax: SyntaxExpressibleByStringInterpolation {
// Silence warning that TokenSyntax has a retroactive conformance to `ExpressibleByStringInterpolation` through
// `SyntaxExpressibleByStringInterpolation`.
extension TokenSyntax: Swift.ExpressibleByStringInterpolation {}
// Work around https://github.com/swiftlang/swift/issues/85153 by restating the implicit conformances.
extension TokenSyntax: Swift.ExpressibleByStringLiteral {}
extension TokenSyntax: Swift.ExpressibleByExtendedGraphemeClusterLiteral {}
extension TokenSyntax: Swift.ExpressibleByUnicodeScalarLiteral {}
#endif

// MARK: - Trivia expressible as string
Expand Down Expand Up @@ -515,7 +519,13 @@ extension Trivia {
}

#if compiler(>=6)
// Silence warning that Trivia has a retroactive conformance to `ExpressibleByStringInterpolation` through
// `SyntaxExpressibleByStringInterpolation`.
extension Trivia: Swift.ExpressibleByStringInterpolation {}
// Work around https://github.com/swiftlang/swift/issues/85153 by restating the implicit conformances.
extension Trivia: Swift.ExpressibleByStringLiteral {}
extension Trivia: Swift.ExpressibleByExtendedGraphemeClusterLiteral {}
extension Trivia: Swift.ExpressibleByUnicodeScalarLiteral {}
#else
extension Trivia: ExpressibleByStringInterpolation {}
#endif
84 changes: 84 additions & 0 deletions ...ces/SwiftSyntaxBuilder/generated/SyntaxExpressibleByStringInterpolationConformances.swift
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