mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
e59cb97048
Since samePosition(in:) now unconditionally returns optionals, String.UTF16View.Index.distance(to: String.UTF16View.Index) must accept an optional to keep some code working. Fixes <rdar://33307780>.
34 lines
1.2 KiB
Swift
34 lines
1.2 KiB
Swift
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See https://swift.org/LICENSE.txt for license information
|
|
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
extension String.UTF16View.Index {
|
|
/// Construct from an integer offset.
|
|
@available(swift, deprecated: 3.2)
|
|
@available(swift, obsoleted: 4.0)
|
|
public init(_ offset: Int) {
|
|
_precondition(offset >= 0, "Negative UTF16 index offset not allowed")
|
|
self.init(_offset: offset)
|
|
}
|
|
|
|
@available(swift, deprecated: 3.2)
|
|
@available(swift, obsoleted: 4.0)
|
|
public func distance(to other: String.UTF16View.Index?) -> Int {
|
|
return _offset.distance(to: other!._offset)
|
|
}
|
|
|
|
@available(swift, deprecated: 3.2)
|
|
@available(swift, obsoleted: 4.0)
|
|
public func advanced(by n: Int) -> String.UTF16View.Index {
|
|
return String.UTF16View.Index(_offset.advanced(by: n))
|
|
}
|
|
}
|