File: super-property.js

package info (click to toggle)
qt6-declarative 6.8.2%2Bdfsg-7
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 305,852 kB
  • sloc: cpp: 760,684; javascript: 514,174; xml: 10,618; python: 2,806; ansic: 2,253; java: 815; sh: 213; makefile: 41; php: 27
file content (35 lines) | stat: -rw-r--r-- 941 bytes parent folder | download | duplicates (11)
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
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-delete-operator-runtime-semantics-evaluation
es6id: 12.5.4.2
description: SuperReferences may not be deleted
info: |
  [...]
  5.If IsPropertyReference(ref) is true, then
    a. If IsSuperReference(ref) is true, throw a ReferenceError exception.
features: [class]
---*/

var caught;

class C extends Object {
  constructor() {
    try {
      delete super.x;
    } catch (err) {
      caught = err;
    }
  }
}

// When the "construct" invocation completes and the "this" value is
// uninitialized, the specification dictates that a ReferenceError must be
// thrown. That behavior is tested elsewhere, so the error is ignored (if it is
// produced at all).
try {
  new C();
} catch (_) {}

assert.sameValue(typeof caught, 'object');
assert.sameValue(caught.constructor, ReferenceError);