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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 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
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
@_spi(ExperimentalLanguageFeatures) import SwiftParser
import SwiftSyntax
import XCTest
final class ValueGenericsTests: ParserTestCase {
func testBasic() {
// Note: This is structurally illegal, but we don't diagnose that it is
// until type checking.
assertParse(
"""
func requirement<let T>() {}
"""
)
assertParse(
"""
func requirement<let T: Int>() {}
"""
)
assertParse(
"""
func requirement<let T1️⃣...>() {}
""",
diagnostics: [
DiagnosticSpec(
message: "ellipsis operator cannot be used with a type parameter pack",
fixIts: ["remove '...'"]
)
],
fixedSource: """
func requirement<let T>() {}
"""
)
}
func testCombination() {
assertParse(
"""
func requirementℹ️<each 1️⃣let T2️⃣>() {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected name in generic parameter",
fixIts: ["insert name"]
),
DiagnosticSpec(
message: "expected '>' to end generic parameter clause",
notes: [
NoteSpec(
message: "to match this opening '<'"
)
],
fixIts: ["insert '>'"]
),
DiagnosticSpec(
message: "expected parameter clause in function signature",
fixIts: ["insert parameter clause"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "extraneous code '>() {}' at top level"
),
],
fixedSource: """
func requirement<each <#identifier#>>()let T>() {}
"""
)
assertParse(
"""
func requirementℹ️<let each1️⃣ 2️⃣T>() {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected '>' to end generic parameter clause",
notes: [
NoteSpec(
message: "to match this opening '<'"
)
],
fixIts: ["insert '>'"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "unexpected code 'T>' before parameter clause"
),
],
fixedSource: """
func requirement<let each>T>() {}
"""
)
}
func testIntegers() {
assertParse(
"""
let x: 1️⃣123
""",
diagnostics: [
DiagnosticSpec(
message: "expected type in type annotation",
fixIts: ["insert type"]
),
DiagnosticSpec(
message: "expected '=' in variable",
fixIts: ["insert '='"]
),
],
fixedSource: """
let x: <#type#> = 123
"""
)
assertParse(
"""
let x: Generic<123>
"""
)
assertParse(
"""
let x: Generic<-123>
"""
)
assertParse(
"""
let x = Generic<123>.self
"""
)
assertParse(
"""
let x = Generic<-123>.self
"""
)
assertParse(
"""
let x = Generic<123, Int>.self
"""
)
assertParse(
"""
let x = Generic<-123, Int>.self
"""
)
assertParse(
"""
let x = Generic<Int, 123>.self
"""
)
assertParse(
"""
let x: Generic<Int, -123>.self
"""
)
assertParse(
"""
typealias One = 1️⃣1
""",
diagnostics: [
DiagnosticSpec(
message: "expected type in typealias declaration",
fixIts: ["insert type"]
)
],
fixedSource: """
typealias One = <#type#>1
"""
)
assertParse(
"""
extension Vector where N == 123 {}
"""
)
assertParse(
"""
extension Vector where 123 == N {}
"""
)
assertParse(
"""
extension Vector where N == -123 {}
"""
)
assertParse(
"""
extension Vector where -123 == N {}
"""
)
assertParse(
"""
extension Vector where N: 1️⃣123 {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected type in conformance requirement",
fixIts: ["insert type"]
),
DiagnosticSpec(
message: "unexpected code '123' in extension"
),
],
fixedSource: """
extension Vector where N: <#type#> 123 {}
"""
)
assertParse(
"""
extension Vector where N: 1️⃣-123 {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected type in conformance requirement",
fixIts: ["insert type"]
),
DiagnosticSpec(
message: "unexpected code '-123' in extension"
),
],
fixedSource: """
extension Vector where N: <#type#> -123 {}
"""
)
assertParse(
"""
extension Vector where 1231️⃣: N {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected ':' or '==' to indicate a conformance or same-type requirement"
),
DiagnosticSpec(
message: "unexpected code ': N' in extension"
),
]
)
assertParse(
"""
extension Vector where -1231️⃣: N {}
""",
diagnostics: [
DiagnosticSpec(
message: "expected ':' or '==' to indicate a conformance or same-type requirement"
),
DiagnosticSpec(
message: "unexpected code ': N' in extension"
),
]
)
assertParse(
"func foo() -> (1️⃣-1) X",
diagnostics: [
DiagnosticSpec(
message: "expected type in tuple type",
fixIts: ["insert type"]
),
DiagnosticSpec(message: "unexpected code '-1' in tuple type"),
],
fixedSource: "func foo() -> (<#type#>-1) X"
)
}
func testOperatorFunc() {
assertParse(
"""
func *<let X: Int, let Y: Int>(l: A<X>, r: A<Y>) -> Int { l.int * r.int }
"""
)
}
}
|
