File: lazy_witness_table_cycle.swift

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (32 lines) | stat: -rw-r--r-- 783 bytes parent folder | download 
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
 
// RUN: %target-run-simple-swift
// REQUIRES: executable_test
// REQUIRES: foundation

// https://github.com/apple/swift/issues/48517

import Foundation

public struct Property: Equatable, Hashable, Codable {
    public var value: PropertyValue<Property>
}

public enum PropertyValue<P>: Equatable, Hashable where P: Equatable & Hashable {
    case invalid
    case date(date: Date?)
}

extension PropertyValue: Codable where P: Codable {
    public func encode(to encoder: Encoder) throws {}
    public init(from decoder: Decoder) throws { self = .invalid }
}

extension String: Error {}

let encoder = JSONEncoder()
let json = try! encoder.encode(
  Property(value: .invalid)
)

let decoder = JSONDecoder()
let result = try! decoder.decode(Property.self, from: json)
print(result)