forked from NativeScript/NativeScript
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathtypes.ts
More file actions
101 lines (82 loc) · 2.71 KB
/
types.ts
File metadata and controls
101 lines (82 loc) · 2.71 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
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
export function isString(value: any): boolean {
return typeof value === "string";
}
export function isNumber(value: any): boolean {
return typeof value === "number";
}
export function isFunction(value: any): boolean {
if (!value) {
return false;
}
return typeof value === "function";
}
export function isUndefined(value: any): boolean {
return typeof value === "undefined";
}
export function isDefined(value: any): boolean {
return typeof value !== "undefined";
}
export function isNullOrUndefined(value: any): boolean {
return (typeof value === "undefined") || (value === null);
}
export function verifyCallback(value: any) {
if (value && !isFunction(value)) {
throw new TypeError("Callback must be a valid function.");
}
}
var classInfosMap = new Map<Function, ClassInfo>();
var funcNameRegex = /function (.{1,})\(/;
export function getClass(object: Object): string {
return getClassInfo(object).name;
}
export function getClassInfo(object: Object): ClassInfo {
var constructor = object.constructor;
var result = classInfosMap.get(constructor);
if (!result) {
result = new ClassInfo(constructor);
classInfosMap.set(constructor, result);
}
return result;
}
export function getBaseClasses(object): Array<string> {
var result = [];
var info = getClassInfo(object);
while (info) {
result.push(info.name);
info = info.baseClassInfo;
}
return result;
}
export class ClassInfo {
private _typeCosntructor: Function;
private _name: string;
private _baseClassInfo: ClassInfo;
constructor(typeCosntructor: Function) {
this._typeCosntructor = typeCosntructor;
}
get name(): string {
if (!this._name) {
var results = (funcNameRegex).exec(this._typeCosntructor.toString());
this._name = (results && results.length > 1) ? results[1] : "";
}
return this._name;
}
get baseClassInfo(): ClassInfo {
if (isUndefined(this._baseClassInfo)) {
this._baseClassInfo = ClassInfo._getBase(this);
// While extending some classes for platform specific versions results in duplicate class types in hierarchy.
if (this._baseClassInfo && this._baseClassInfo.name === this.name) {
this._baseClassInfo = ClassInfo._getBase(this._baseClassInfo);
}
}
return this._baseClassInfo;
}
private static _getBase(info: ClassInfo): ClassInfo {
var result = null;
var constructorProto = info._typeCosntructor.prototype;
if (constructorProto.__proto__) {
result = getClassInfo(constructorProto.__proto__);
}
return result;
}
}