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
|
// RUN: %target-typecheck-verify-swift -verify-ignore-unknown -swift-version 4
enum Conditional<T> {
case a(x: T, y: T?)
case b(z: [T])
func foo() {
// They should receive a synthesized CodingKeys enum.
let _ = Conditional.CodingKeys.self
let _ = Conditional.ACodingKeys.self
let _ = Conditional.BCodingKeys.self
// The enum should have a case for each of the cases.
let _ = Conditional.CodingKeys.a
let _ = Conditional.CodingKeys.b
// The enum should have a case for each of the vars.
let _ = Conditional.ACodingKeys.x
let _ = Conditional.ACodingKeys.y
let _ = Conditional.BCodingKeys.z
}
}
extension Conditional: Encodable where T: Encodable { // expected-note {{where 'T' = 'OnlyDec'}}
}
extension Conditional: Decodable where T: Decodable { // expected-note {{where 'T' = 'OnlyEnc'}}
}
struct OnlyEnc: Encodable {}
struct OnlyDec: Decodable {}
// They should receive synthesized init(from:) and an encode(to:).
let _ = Conditional<OnlyDec>.init(from:)
let _ = Conditional<OnlyEnc>.encode(to:)
// but only for the appropriately *codable parameters.
let _ = Conditional<OnlyEnc>.init(from:) // expected-error {{referencing initializer 'init(from:)' on 'Conditional' requires that 'OnlyEnc' conform to 'Decodable'}}
let _ = Conditional<OnlyDec>.encode(to:) // expected-error {{referencing instance method 'encode(to:)' on 'Conditional' requires that 'OnlyDec' conform to 'Encodable'}}
// The synthesized CodingKeys type should not be accessible from outside the
// enum.
let _ = Conditional<Int>.CodingKeys.self // expected-error {{'CodingKeys' is inaccessible due to 'private' protection level}}
let _ = Conditional<Int>.ACodingKeys.self // expected-error {{'ACodingKeys' is inaccessible due to 'private' protection level}}
let _ = Conditional<Int>.BCodingKeys.self // expected-error {{'BCodingKeys' is inaccessible due to 'private' protection level}}
|
