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
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
//
//===----------------------------------------------------------------------===//
import MacroExamplesImplementation
import SwiftSyntaxMacros
import SwiftSyntaxMacrosTestSupport
import XCTest
final class ObservableMacroTests: XCTestCase {
private let macros: [String: Macro.Type] = [
"Observable": ObservableMacro.self,
"ObservableProperty": ObservablePropertyMacro.self,
]
func testExpansion() {
assertMacroExpansion(
"""
@Observable
final class Dog {
var name: String?
var treat: Treat?
var isHappy: Bool = true
init() {}
func bark() {
print("bork bork")
}
}
""",
expandedSource: #"""
final class Dog {
var name: String? {
get {
_registrar.beginAccess(\.name)
defer {
_registrar.endAccess()
}
return _storage.name
}
set {
_registrar.beginAccess(\.name)
_registrar.register(observable: self, willSet: \.name, to: newValue)
defer {
_registrar.register(observable: self, didSet: \.name)
_registrar.endAccess()
}
_storage.name = newValue
}
}
var treat: Treat? {
get {
_registrar.beginAccess(\.treat)
defer {
_registrar.endAccess()
}
return _storage.treat
}
set {
_registrar.beginAccess(\.treat)
_registrar.register(observable: self, willSet: \.treat, to: newValue)
defer {
_registrar.register(observable: self, didSet: \.treat)
_registrar.endAccess()
}
_storage.treat = newValue
}
}
var isHappy: Bool {
get {
_registrar.beginAccess(\.isHappy)
defer {
_registrar.endAccess()
}
return _storage.isHappy
}
set {
_registrar.beginAccess(\.isHappy)
_registrar.register(observable: self, willSet: \.isHappy, to: newValue)
defer {
_registrar.register(observable: self, didSet: \.isHappy)
_registrar.endAccess()
}
_storage.isHappy = newValue
}
}
init() {}
func bark() {
print("bork bork")
}
let _registrar = ObservationRegistrar<Dog >()
public nonisolated func addObserver(_ observer: some Observer<Dog >) {
_registrar.addObserver(observer)
}
public nonisolated func removeObserver(_ observer: some Observer<Dog >) {
_registrar.removeObserver(observer)
}
private func withTransaction<T>(_ apply: () throws -> T) rethrows -> T {
_registrar.beginAccess()
defer {
_registrar.endAccess()
}
return try apply()
}
private struct Storage {
var name: String?
var treat: Treat?
var isHappy: Bool = true
}
private var _storage = Storage()
}
extension Dog: Observable {
}
"""#,
macros: macros,
indentationWidth: .spaces(2)
)
}
}
|
