mirror of https://github.com/tc39/test262.git
58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
|
// This file was procedurally generated from the following sources:
|
||
|
|
// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
|
||
|
|
// - src/dstr-binding/default/for-of-var.template
|
||
|
|
/*---
|
||
|
|
description: RestElement applied to an exhausted iterator (for-of statement)
|
||
|
|
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
|
||
|
|
es6id: 13.7.5.11
|
||
|
|
features: [Symbol.iterator, destructuring-binding]
|
||
|
|
flags: [generated]
|
||
|
|
info: |
|
||
|
|
IterationStatement :
|
||
|
|
for ( var ForBinding of AssignmentExpression ) Statement
|
||
|
|
|
||
|
|
[...]
|
||
|
|
3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
|
||
|
|
varBinding, labelSet).
|
||
|
|
|
||
|
|
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
|
||
|
|
|
||
|
|
[...]
|
||
|
|
3. Let destructuring be IsDestructuring of lhs.
|
||
|
|
[...]
|
||
|
|
5. Repeat
|
||
|
|
[...]
|
||
|
|
h. If destructuring is false, then
|
||
|
|
[...]
|
||
|
|
i. Else
|
||
|
|
i. If lhsKind is assignment, then
|
||
|
|
[...]
|
||
|
|
ii. Else if lhsKind is varBinding, then
|
||
|
|
1. Assert: lhs is a ForBinding.
|
||
|
|
2. Let status be the result of performing BindingInitialization
|
||
|
|
for lhs passing nextValue and undefined as the arguments.
|
||
|
|
[...]
|
||
|
|
|
||
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
||
|
|
BindingRestElement : ... BindingIdentifier
|
||
|
|
1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
|
||
|
|
environment).
|
||
|
|
2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
|
||
|
|
[...]
|
||
|
|
b. If iteratorRecord.[[done]] is true, then
|
||
|
|
i. If environment is undefined, return PutValue(lhs, A).
|
||
|
|
ii. Return InitializeReferencedBinding(lhs, A).
|
||
|
|
|
||
|
|
---*/
|
||
|
|
|
||
|
|
var iterCount = 0;
|
||
|
|
|
||
|
|
for (var [, , ...x] of [[1, 2]]) {
|
||
|
|
assert(Array.isArray(x));
|
||
|
|
assert.sameValue(x.length, 0);
|
||
|
|
|
||
|
|
iterCount += 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
|