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
|
// This file was procedurally generated from the following sources:
// - src/dstr-assignment/obj-rest-non-string-computed-property-array-1.case
// - src/dstr-assignment/default/for-of.template
/*---
description: Destructuring field can be a non-string computed property, i.e it can be defined only at runtime. Rest operation needs to skip these properties as well. (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [object-rest, destructuring-binding]
flags: [generated]
includes: [compareArray.js, propertyHelper.js]
info: |
IterationStatement :
for ( LeftHandSideExpression of AssignmentExpression ) Statement
1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« »,
AssignmentExpression, iterate).
2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement,
keyResult, assignment, labelSet).
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
[...]
4. If destructuring is true and if lhsKind is assignment, then
a. Assert: lhs is a LeftHandSideExpression.
b. Let assignmentPattern be the parse of the source text corresponding to
lhs using AssignmentPattern as the goal symbol.
[...]
---*/
var a = 1.;
var b, rest;
var counter = 0;
for ({[a]:b, ...rest} of [{[a]: [1], bar: 2 }]) {
assert.compareArray(b, [1]);
assert.sameValue(Object.getOwnPropertyDescriptor(rest, "1"), undefined);
verifyProperty(rest, "bar", {
value: 2,
enumerable: true,
writable: true,
configurable: true
});
counter += 1;
}
assert.sameValue(counter, 1);
reportCompare(0, 0);
|
