woody.fm
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1//
2// StringCodingKey.swift
3// URLQueryItemCoder
4//
5// Created by Kyle Hughes on 1/15/23.
6//
7
8/// A basic coding key implementation for stringly-keyed collections.
9internal struct StringCodingKey {
10 /// The value to use in an integer-indexed collection (e.g. an int-keyed dictionary).
11 internal let intValue: Int?
12
13 /// The string to use in a named collection (e.g. a string-keyed dictionary).
14 internal let stringValue: String
15
16 // MARK: Private Initialization
17
18 private init(intValue: Int?, stringValue: String) {
19 self.intValue = intValue
20 self.stringValue = stringValue
21 }
22}
23
24// MARK: - CodingKey Extension
25
26extension StringCodingKey: CodingKey {
27 // MARK: Internal Initialization
28
29 /// Creates a new instance from the specified integer.
30 ///
31 /// - Parameter intValue: The integer value of the desired key.
32 internal init(intValue: Int) {
33 self.intValue = intValue
34
35 stringValue = String(intValue)
36 }
37
38 /// Creates a new instance from the given string.
39 ///
40 /// - Parameter stringValue: The string value of the desired key.
41 internal init(stringValue: String) {
42 self.stringValue = stringValue
43
44 intValue = nil
45 }
46}
47
48// MARK: - ExpressibleByStringLiteral Extension
49
50extension StringCodingKey: ExpressibleByStringLiteral {
51 // MARK: Internal Initialization
52
53 /// Creates an instance initialized to the given string value.
54 ///
55 /// - Parameter stringLiteral: The value of the new instance.
56 @inlinable
57 internal init(stringLiteral value: String) {
58 self.init(stringValue: value)
59 }
60}