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4ddac3fbbd
* Eradicate IndexDistance associated type, replacing with Int everywhere * Consistently use Int for ExistentialCollection’s IndexDistance type. * Fix test for IndexDistance removal * Remove a handful of no-longer-needed explicit types * Add compatibility shims for non-Int index distances * Test compatibility shim * Move IndexDistance typealias into the Collection protocol
27 lines
1006 B
Swift
27 lines
1006 B
Swift
// RUN: %target-swift-frontend -typecheck -primary-file %s
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protocol AnyCodeUnits_ {
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typealias Index = Int64
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typealias Element = UInt32
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var startIndex: Index { get }
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var endIndex: Index { get }
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func index(after: Index) -> Index
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func index(before: Index) -> Index
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func index(_ i: Index, offsetBy: Int64) -> Index
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subscript(i: Index) -> Element { get }
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subscript(r: Range<Index>) -> AnyCodeUnits { get }
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}
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struct AnyCodeUnits : RandomAccessCollection, AnyCodeUnits_ {
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let me: AnyCodeUnits_
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typealias Indices = DefaultRandomAccessIndices<AnyCodeUnits>
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var startIndex: Int64 { return me.startIndex }
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var endIndex: Int64 { return me.endIndex }
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func index(after i: Index) -> Index { return me.index(after: i) }
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func index(before i: Index) -> Index { return me.index(before: i) }
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func index(_ i: Index, offsetBy: Int64) -> Index { return me.index(i, offsetBy: i) }
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subscript(i: Index) -> Element { return me[i] }
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subscript(r: Range<Index>) -> AnyCodeUnits { return me[r] }
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}
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