|
1
|
var cloneArrayBuffer = require('./_cloneArrayBuffer'),
|
|
2
|
cloneDataView = require('./_cloneDataView'),
|
|
3
|
cloneRegExp = require('./_cloneRegExp'),
|
|
4
|
cloneSymbol = require('./_cloneSymbol'),
|
|
5
|
cloneTypedArray = require('./_cloneTypedArray');
|
|
6
|
|
|
7
|
/** `Object#toString` result references. */
|
|
8
|
var boolTag = '[object Boolean]',
|
|
9
|
dateTag = '[object Date]',
|
|
10
|
mapTag = '[object Map]',
|
|
11
|
numberTag = '[object Number]',
|
|
12
|
regexpTag = '[object RegExp]',
|
|
13
|
setTag = '[object Set]',
|
|
14
|
stringTag = '[object String]',
|
|
15
|
symbolTag = '[object Symbol]';
|
|
16
|
|
|
17
|
var arrayBufferTag = '[object ArrayBuffer]',
|
|
18
|
dataViewTag = '[object DataView]',
|
|
19
|
float32Tag = '[object Float32Array]',
|
|
20
|
float64Tag = '[object Float64Array]',
|
|
21
|
int8Tag = '[object Int8Array]',
|
|
22
|
int16Tag = '[object Int16Array]',
|
|
23
|
int32Tag = '[object Int32Array]',
|
|
24
|
uint8Tag = '[object Uint8Array]',
|
|
25
|
uint8ClampedTag = '[object Uint8ClampedArray]',
|
|
26
|
uint16Tag = '[object Uint16Array]',
|
|
27
|
uint32Tag = '[object Uint32Array]';
|
|
28
|
|
|
29
|
/**
|
|
30
|
* Initializes an object clone based on its `toStringTag`.
|
|
31
|
*
|
|
32
|
* **Note:** This function only supports cloning values with tags of
|
|
33
|
* `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
|
|
34
|
*
|
|
35
|
* @private
|
|
36
|
* @param {Object} object The object to clone.
|
|
37
|
* @param {string} tag The `toStringTag` of the object to clone.
|
|
38
|
* @param {boolean} [isDeep] Specify a deep clone.
|
|
39
|
* @returns {Object} Returns the initialized clone.
|
|
40
|
*/
|
|
41
|
function initCloneByTag(object, tag, isDeep) {
|
|
42
|
var Ctor = object.constructor;
|
|
43
|
switch (tag) {
|
|
44
|
case arrayBufferTag:
|
|
45
|
return cloneArrayBuffer(object);
|
|
46
|
|
|
47
|
case boolTag:
|
|
48
|
case dateTag:
|
|
49
|
return new Ctor(+object);
|
|
50
|
|
|
51
|
case dataViewTag:
|
|
52
|
return cloneDataView(object, isDeep);
|
|
53
|
|
|
54
|
case float32Tag: case float64Tag:
|
|
55
|
case int8Tag: case int16Tag: case int32Tag:
|
|
56
|
case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
|
|
57
|
return cloneTypedArray(object, isDeep);
|
|
58
|
|
|
59
|
case mapTag:
|
|
60
|
return new Ctor;
|
|
61
|
|
|
62
|
case numberTag:
|
|
63
|
case stringTag:
|
|
64
|
return new Ctor(object);
|
|
65
|
|
|
66
|
case regexpTag:
|
|
67
|
return cloneRegExp(object);
|
|
68
|
|
|
69
|
case setTag:
|
|
70
|
return new Ctor;
|
|
71
|
|
|
72
|
case symbolTag:
|
|
73
|
return cloneSymbol(object);
|
|
74
|
}
|
|
75
|
}
|
|
76
|
|
|
77
|
module.exports = initCloneByTag;
|