File: dstr-ary-ptrn-rest-id.js

package info (click to toggle)
qtdeclarative-opensource-src 5.15.8%2Bdfsg-3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 259,256 kB
  • sloc: javascript: 512,396; cpp: 495,775; xml: 8,892; python: 3,304; ansic: 2,764; sh: 206; makefile: 62; php: 27
file content (35 lines) | stat: -rw-r--r-- 1,136 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
// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-id.case
// - src/dstr-binding/default/var-stmt.template
/*---
description: Lone rest element (`var` statement)
esid: sec-variable-statement-runtime-semantics-evaluation
es6id: 13.3.2.4
features: [destructuring-binding]
flags: [generated]
info: |
    VariableDeclaration : BindingPattern Initializer

    1. Let rhs be the result of evaluating Initializer.
    2. Let rval be GetValue(rhs).
    3. ReturnIfAbrupt(rval).
    4. Return the result of performing BindingInitialization for
       BindingPattern passing rval and undefined as arguments.

    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
    BindingRestElement : ... BindingIdentifier
    [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
       [...]
       f. Let status be CreateDataProperty(A, ToString (n), nextValue).
       [...]
---*/
var values = [1, 2, 3];

var [...x] = values;

assert(Array.isArray(x));
assert.sameValue(x.length, 3);
assert.sameValue(x[0], 1);
assert.sameValue(x[1], 2);
assert.sameValue(x[2], 3);
assert.notSameValue(x, values);