forked from swiftwasm/JavaScriptKit
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathJSBridgedType.swift
More file actions
46 lines (37 loc) · 1.57 KB
/
JSBridgedType.swift
File metadata and controls
46 lines (37 loc) · 1.57 KB
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
/// Use this protocol when your type has no single JavaScript class.
/// For example, a union type of multiple classes or primitive values.
public protocol JSBridgedType: JSValueCompatible, CustomStringConvertible {
/// This is the value your class wraps.
var value: JSValue { get }
/// If your class is incompatible with the provided value, return `nil`.
init?(from value: JSValue)
}
extension JSBridgedType {
public static func construct(from value: JSValue) -> Self? {
return Self.init(from: value)
}
public func jsValue() -> JSValue { value }
public var description: String { value.description }
}
/// Conform to this protocol when your Swift class wraps a JavaScript class.
public protocol JSBridgedClass: JSBridgedType {
/// The constructor function for the JavaScript class
static var constructor: JSFunction { get }
/// The JavaScript object wrapped by this instance.
/// You may assume that `jsObject instanceof Self.constructor == true`
var jsObject: JSObject { get }
/// Create an instance wrapping the given JavaScript object.
/// You may assume that `jsObject instanceof Self.constructor`
init(unsafelyWrapping jsObject: JSObject)
}
extension JSBridgedClass {
public var value: JSValue { jsObject.jsValue() }
public init?(from value: JSValue) {
guard let object = value.object else { return nil }
self.init(from: object)
}
public init?(from object: JSObject) {
guard object.isInstanceOf(Self.constructor) else { return nil }
self.init(unsafelyWrapping: object)
}
}