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98 lines
3.4 KiB
Swift
98 lines
3.4 KiB
Swift
//===--- StringCharacterView.swift - String's Collection of Characters ----===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// String is-not-a Sequence or Collection, but it exposes a
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// collection of characters.
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//
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//===----------------------------------------------------------------------===//
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// FIXME(ABI)#70 : The character string view should have a custom iterator type
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// to allow performance optimizations of linear traversals.
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import SwiftShims
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extension String {
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/// A view of a string's contents as a collection of characters.
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///
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/// Previous versions of Swift provided this view since String
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/// itself was not a collection. String is now a collection of
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/// characters, so this type is now just an alias for String.
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please use String directly")
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public typealias CharacterView = String
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/// A view of the string's contents as a collection of characters.
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@inlinable // FIXME(sil-serialize-all)
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please use String directly")
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public var characters: String {
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get {
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return self
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}
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set {
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self = newValue
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}
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}
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/// Applies the given closure to a mutable view of the string's characters.
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///
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/// Previous versions of Swift provided this view since String
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/// itself was not a collection. String is now a collection of
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/// characters, so this type is now just an alias for String.
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@inlinable // FIXME(sil-serialize-all)
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please mutate the String directly")
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public mutating func withMutableCharacters<R>(
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_ body: (inout String) -> R
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) -> R {
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return body(&self)
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}
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}
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extension Substring {
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/// A view of a string's contents as a collection of characters.
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///
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/// Previous versions of Swift provided this view since String
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/// itself was not a collection. String is now a collection of
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/// characters, so this type is now just an alias for String.
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please use Substring directly")
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public typealias CharacterView = Substring
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/// A view of the string's contents as a collection of characters.
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@inlinable // FIXME(sil-serialize-all)
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please use Substring directly")
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public var characters: Substring {
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get {
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return self
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}
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set {
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self = newValue
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}
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}
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/// Applies the given closure to a mutable view of the string's characters.
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///
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/// Previous versions of Swift provided this view since String
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/// itself was not a collection. String is now a collection of
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/// characters, so this type is now just an alias for String.
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@inlinable // FIXME(sil-serialize-all)
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@available(swift, deprecated: 3.2, obsoleted: 5.0,
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message: "Please mutate the Substring directly")
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public mutating func withMutableCharacters<R>(
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_ body: (inout Substring) -> R
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) -> R {
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return body(&self)
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}
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}
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