1e98184f-0522-4515-a343-e44e919e1313

Committed 08 Dec 2023 07:22AM UTC coverage: 55.49% (-10.3%) from 65.775%

Build # 1e98184f-0522-4515-a343-e44e919e1313

Build Type

push

circleci

Committed by

Haixing-Hu

Commit Message

style: fix coding style

Run Details

274 of 513 branches covered (0.0%)

Branch coverage included in aggregate %.

1 of 1 new or added line in 1 file covered. (100.0%)

47 existing lines in 7 files now uncovered.

287 of 498 relevant lines covered (57.63%)

12.93 hits per line

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87.1

/src/get-declaring-class.js

////////////////////////////////////////////////////////////////////////////////
//
//    Copyright (c) 2022 - 2023.
//    Haixing Hu, Qubit Co. Ltd.
//
//    All rights reserved.
//
////////////////////////////////////////////////////////////////////////////////

/**
 * Gets the declaring class of the specified property from the ancestor tree of
 * the specified class.
 *
 * All classes in the ancestor tree of the specified class must have a default
 * constructor.
 *
 * If the specified property is declared in multiple places in the ancestor tree
 * of the specified class, this function returns the earliest declaring class.
 *
 * @param {function} Class
 *     The constructor of the specified class.
 * @param {string} property
 *     The name of the specified property.
 * @return {function}
 *     The earliest declaring class of the specified property in the ancestor
 *     tree of the specified class; or `null` if there is no such declaring
 *     class.
 * @deprecated This function **CANNOT** correctly handle the class fields, and
 * we haven't found a correct way to implement it. Do **NOT** use it.
 */
function getDeclaringClass(Class, property) {
  if (typeof Class !== 'function') {
    throw new TypeError('The parameter "Class" must be the constructor of a class.');
  }
  if (typeof property !== 'string') {
    throw new TypeError('The parameter "property" must be a string.');
  }
  let Current = Class;
  let Last = null;
  while (Current !== Function.prototype) {
    // Tests whether property is defined in the prototype of Current
    if (Object.hasOwn(Current.prototype, property)) {
      return Current;
    }
    // Tests whether property is defined in the instance of Current
    const instance = new Current();
    if (!(property in instance)) {
      return Last;
    }
    Last = Current;
    // Go backward in the ancestor tree
    Current = Object.getPrototypeOf(Current);
  }
  if (Object.hasOwn(Last.prototype, property)) {
    return Last;
  } else if (Object.hasOwn(Object.prototype, property)) {
    // deal with the special cases that the property is declared in Object
    return Object;
  } else {
    return Last;
  }
}

export default getDeclaringClass;

1	////////////////////////////////////////////////////////////////////////////////
2	//
3	// Copyright (c) 2022 - 2023.
4	// Haixing Hu, Qubit Co. Ltd.
5	//
6	// All rights reserved.
7	//
8	////////////////////////////////////////////////////////////////////////////////
9
10	/**
11	* Gets the declaring class of the specified property from the ancestor tree of
12	* the specified class.
13	*
14	* All classes in the ancestor tree of the specified class must have a default
15	* constructor.
16	*
17	* If the specified property is declared in multiple places in the ancestor tree
18	* of the specified class, this function returns the earliest declaring class.
19	*
20	* @param {function} Class
21	* The constructor of the specified class.
22	* @param {string} property
23	* The name of the specified property.
24	* @return {function}
25	* The earliest declaring class of the specified property in the ancestor
26	* tree of the specified class; or `null` if there is no such declaring
27	* class.
28	* @deprecated This function CANNOT correctly handle the class fields, and
29	* we haven't found a correct way to implement it. Do NOT use it.
30	*/
31	function getDeclaringClass(Class, property) {
32	if (typeof Class !== 'function') {	21✔
33	throw new TypeError('The parameter "Class" must be the constructor of a class.');	3✔
34	}
35	if (typeof property !== 'string') {	18!
UNCOV 36	throw new TypeError('The parameter "property" must be a string.');	×
37	}
38	let Current = Class;	18✔
39	let Last = null;	18✔
40	while (Current !== Function.prototype) {	18✔
41	// Tests whether property is defined in the prototype of Current
42	if (Object.hasOwn(Current.prototype, property)) {	32✔
43	return Current;	10✔
44	}
45	// Tests whether property is defined in the instance of Current
46	const instance = new Current();	22✔
47	if (!(property in instance)) {	22✔
48	return Last;	5✔
49	}
50	Last = Current;	17✔
51	// Go backward in the ancestor tree
52	Current = Object.getPrototypeOf(Current);	17✔
53	}
54	if (Object.hasOwn(Last.prototype, property)) {	3!
UNCOV 55	return Last;	×
56	} else if (Object.hasOwn(Object.prototype, property)) {	3✔
57	// deal with the special cases that the property is declared in Object
58	return Object;	1✔
59	} else {
60	return Last;	2✔
61	}
62	}
63
64	export default getDeclaringClass;

Haixing-Hu / js-common-util / 1e98184f-0522-4515-a343-e44e919e1313

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