1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
//===--- ShadowProtocols.swift - Protocols for decoupled ObjC bridging ----===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// To implement bridging, the core standard library needs to interact
// a little bit with Cocoa. Because we want to keep the core
// decoupled from the Foundation module, we can't use foundation
// classes such as NSArray directly. We _can_, however, use an @objc
// protocols whose API is "layout-compatible" with that of NSArray,
// and use unsafe casts to treat NSArray instances as instances of
// that protocol.
//
//===----------------------------------------------------------------------===//
#if _runtime(_ObjC)
import SwiftShims
@objc
internal protocol _ShadowProtocol {}
/// A shadow for the `NSFastEnumeration` protocol.
@objc
internal protocol _NSFastEnumeration: _ShadowProtocol {
@objc(countByEnumeratingWithState:objects:count:)
func countByEnumerating(
with state: UnsafeMutablePointer<_SwiftNSFastEnumerationState>,
objects: UnsafeMutablePointer<AnyObject>?, count: Int
) -> Int
}
/// A shadow for the `NSEnumerator` class.
@objc
internal protocol _NSEnumerator: _ShadowProtocol {
init()
func nextObject() -> AnyObject?
}
/// A token that can be used for `NSZone*`.
internal typealias _SwiftNSZone = OpaquePointer
/// A shadow for the `NSCopying` protocol.
@objc
internal protocol _NSCopying: _ShadowProtocol {
@objc(copyWithZone:)
func copy(with zone: _SwiftNSZone?) -> AnyObject
}
/// A shadow for the "core operations" of NSArray.
///
/// Covers a set of operations everyone needs to implement in order to
/// be a useful `NSArray` subclass.
@unsafe_no_objc_tagged_pointer @objc
internal protocol _NSArrayCore: _NSCopying, _NSFastEnumeration {
@objc(objectAtIndex:)
func objectAt(_ index: Int) -> AnyObject
func getObjects(_: UnsafeMutablePointer<AnyObject>, range: _SwiftNSRange)
@objc(countByEnumeratingWithState:objects:count:)
override func countByEnumerating(
with state: UnsafeMutablePointer<_SwiftNSFastEnumerationState>,
objects: UnsafeMutablePointer<AnyObject>?, count: Int
) -> Int
var count: Int { get }
}
/// A shadow for the "core operations" of NSDictionary.
///
/// Covers a set of operations everyone needs to implement in order to
/// be a useful `NSDictionary` subclass.
@objc
internal protocol _NSDictionaryCore: _NSCopying, _NSFastEnumeration {
// The following methods should be overridden when implementing an
// NSDictionary subclass.
// The designated initializer of `NSDictionary`.
init(
objects: UnsafePointer<AnyObject?>,
forKeys: UnsafeRawPointer, count: Int)
var count: Int { get }
@objc(objectForKey:)
func object(forKey aKey: AnyObject) -> AnyObject?
func keyEnumerator() -> _NSEnumerator
// We also override the following methods for efficiency.
@objc(copyWithZone:)
override func copy(with zone: _SwiftNSZone?) -> AnyObject
@objc(getObjects:andKeys:count:)
func getObjects(
_ objects: UnsafeMutablePointer<AnyObject>?,
andKeys keys: UnsafeMutablePointer<AnyObject>?,
count: Int
)
@objc(countByEnumeratingWithState:objects:count:)
override func countByEnumerating(
with state: UnsafeMutablePointer<_SwiftNSFastEnumerationState>,
objects: UnsafeMutablePointer<AnyObject>?, count: Int
) -> Int
}
/// A shadow for the API of `NSDictionary` we will use in the core
/// stdlib.
///
/// `NSDictionary` operations, in addition to those on
/// `_NSDictionaryCore`, that we need to use from the core stdlib.
/// Distinct from `_NSDictionaryCore` because we don't want to be
/// forced to implement operations that `NSDictionary` already
/// supplies.
@unsafe_no_objc_tagged_pointer @objc
internal protocol _NSDictionary: _NSDictionaryCore {
// Note! This API's type is different from what is imported by the clang
// importer.
override func getObjects(
_ objects: UnsafeMutablePointer<AnyObject>?,
andKeys keys: UnsafeMutablePointer<AnyObject>?,
count: Int)
}
/// A shadow for the "core operations" of NSSet.
///
/// Covers a set of operations everyone needs to implement in order to
/// be a useful `NSSet` subclass.
@objc
internal protocol _NSSetCore: _NSCopying, _NSFastEnumeration {
// The following methods should be overridden when implementing an
// NSSet subclass.
// The designated initializer of `NSSet`.
init(objects: UnsafePointer<AnyObject?>, count: Int)
var count: Int { get }
func member(_ object: AnyObject) -> AnyObject?
func objectEnumerator() -> _NSEnumerator
// We also override the following methods for efficiency.
@objc(copyWithZone:)
override func copy(with zone: _SwiftNSZone?) -> AnyObject
@objc(countByEnumeratingWithState:objects:count:)
override func countByEnumerating(
with state: UnsafeMutablePointer<_SwiftNSFastEnumerationState>,
objects: UnsafeMutablePointer<AnyObject>?, count: Int
) -> Int
}
/// A shadow for the API of NSSet we will use in the core
/// stdlib.
///
/// `NSSet` operations, in addition to those on
/// `_NSSetCore`, that we need to use from the core stdlib.
/// Distinct from `_NSSetCore` because we don't want to be
/// forced to implement operations that `NSSet` already
/// supplies.
@unsafe_no_objc_tagged_pointer @objc
internal protocol _NSSet: _NSSetCore {
@objc(getObjects:count:) func getObjects(
_ buffer: UnsafeMutablePointer<AnyObject>,
count: Int
)
@objc(getObjects:) func getObjects(
_ buffer: UnsafeMutablePointer<AnyObject>
)
}
/// A shadow for the API of NSNumber we will use in the core
/// stdlib.
@objc
internal protocol _NSNumber {
var doubleValue: Double { get }
var floatValue: Float { get }
var unsignedLongLongValue: UInt64 { get }
var longLongValue: Int64 { get }
var objCType: UnsafePointer<Int8> { get }
}
#else
internal protocol _NSSetCore {}
internal protocol _NSDictionaryCore {}
#endif
|
