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
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Collections open source project
//
// Copyright (c) 2022 - 2024 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
//
//===----------------------------------------------------------------------===//
// #############################################################################
// # #
// # DO NOT EDIT THIS FILE; IT IS AUTOGENERATED. #
// # #
// #############################################################################
// In single module mode, we need these declarations to be internal,
// but in regular builds we want them to be public. Unfortunately
// the current best way to do this is to duplicate all definitions.
#if COLLECTIONS_SINGLE_MODULE
#if compiler(<5.7) || (os(macOS) && compiler(<5.8)) // SE-0334
extension UnsafeRawPointer {
/// Obtain the next pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
internal func alignedUp<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = (UInt(bitPattern: self) &+ mask) & ~mask
return Self(bitPattern: bits)!
}
/// Obtain the preceding pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
internal func alignedDown<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = UInt(bitPattern: self) & ~mask
return Self(bitPattern: bits)!
}
}
extension UnsafeMutableRawPointer {
/// Obtain the next pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
internal func alignedUp<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = (UInt(bitPattern: self) &+ mask) & ~mask
return Self(bitPattern: bits)!
}
/// Obtain the preceding pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
internal func alignedDown<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = UInt(bitPattern: self) & ~mask
return Self(bitPattern: bits)!
}
}
#endif
#else // !COLLECTIONS_SINGLE_MODULE
#if compiler(<5.7) || (os(macOS) && compiler(<5.8)) // SE-0334
extension UnsafeRawPointer {
/// Obtain the next pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
public func alignedUp<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = (UInt(bitPattern: self) &+ mask) & ~mask
return Self(bitPattern: bits)!
}
/// Obtain the preceding pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
public func alignedDown<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = UInt(bitPattern: self) & ~mask
return Self(bitPattern: bits)!
}
}
extension UnsafeMutableRawPointer {
/// Obtain the next pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
public func alignedUp<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = (UInt(bitPattern: self) &+ mask) & ~mask
return Self(bitPattern: bits)!
}
/// Obtain the preceding pointer properly aligned to store a value of type `T`.
///
/// If `self` is properly aligned for accessing `T`,
/// this function returns `self`.
///
/// - Parameters:
/// - type: the type to be stored at the returned address.
/// - Returns: a pointer properly aligned to store a value of type `T`.
@inlinable
@_alwaysEmitIntoClient
public func alignedDown<T>(for type: T.Type) -> Self {
let mask = UInt(MemoryLayout<T>.alignment) &- 1
let bits = UInt(bitPattern: self) & ~mask
return Self(bitPattern: bits)!
}
}
#endif
#endif // COLLECTIONS_SINGLE_MODULE
|
