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ba6158d74e
Create a _StringRepresentation struct to standardize internal testing on. Internalize much of _StringGuts, except for some SPI hacks, and update tests to use _StringRepresentation.
67 lines
1.8 KiB
Swift
67 lines
1.8 KiB
Swift
//===----------------------------------------------------------------------===//
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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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// Declarations to enable ease-of-testing
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public // @testable
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struct _StringRepresentation {
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public var _isASCII: Bool
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public var _count: Int
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public var _capacity: Int
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public enum _Form {
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case _small
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case _cocoa(object: AnyObject)
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case _native(object: AnyObject)
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case _immortal(address: UInt)
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}
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public var _form: _Form
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public var _objectIdentifier: ObjectIdentifier? {
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switch _form {
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case ._cocoa(let object): return ObjectIdentifier(object)
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case ._native(let object): return ObjectIdentifier(object)
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default: return nil
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}
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}
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}
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extension String {
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public // @testable
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func _classify() -> _StringRepresentation {
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var result = _StringRepresentation(
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_isASCII: _guts._isASCIIOrSmallASCII,
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_count: _guts.count,
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_capacity: _guts.capacity,
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_form: ._small
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)
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if _guts._isSmall {
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return result
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}
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if _guts._isNative {
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result._form = ._native(object: _guts._owner!)
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return result
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}
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if _guts._isCocoa {
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result._form = ._cocoa(object: _guts._owner!)
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return result
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}
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if _guts._isUnmanaged {
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result._form = ._immortal(
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address: UInt(bitPattern: _guts._unmanagedRawStart))
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return result
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}
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fatalError()
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}
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}
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