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[cxx-interop] Make some CxxSequence methods inlinable #61484

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Merged
merged 1 commit into from
Oct 13, 2022
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[cxx-interop] Make some CxxSequence methods inlinable #61484

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12 changes: 9 additions & 3 deletions stdlib/public/Cxx/CxxSequence.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -85,16 +85,21 @@ public class CxxIterator<T>: IteratorProtocol where T: CxxSequence {
// which would result in dangling pointers for some C++ sequence types.

public typealias Element = T.RawIterator.Pointee
private var sequence: T
private var rawIterator: T.RawIterator
private let endIterator: T.RawIterator

@usableFromInline
internal var sequence: T
@usableFromInline
internal var rawIterator: T.RawIterator
@usableFromInline
internal let endIterator: T.RawIterator

public init(sequence: T) {
self.sequence = sequence
self.rawIterator = self.sequence.__beginUnsafe()
self.endIterator = self.sequence.__endUnsafe()
}

@inlinable
public func next() -> Element? {
if self.rawIterator == self.endIterator {
return nil
Expand All @@ -106,6 +111,7 @@ public class CxxIterator<T>: IteratorProtocol where T: CxxSequence {
}

extension CxxSequence {
@inlinable
public func makeIterator() -> CxxIterator<Self> {
return CxxIterator(sequence: self)
}
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