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// This file was procedurally generated from the following sources:
// - src/dstr-assignment/array-elem-trlg-iter-elision-iter-nrml-close-skip.case
// - src/dstr-assignment/default/for-of.template
/*---
description: IteratorClose not invoked when elision exhausts the iterator (For..of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [Symbol.iterator, destructuring-binding]
flags: [generated]
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.
[...]
ArrayAssignmentPattern :
[ AssignmentElementList , Elisionopt AssignmentRestElementopt ]
[...]
6. If Elision is present, then
a. Let status be the result of performing
IteratorDestructuringAssignmentEvaluation of Elision with
iteratorRecord as the argument.
b. If status is an abrupt completion, then
[...]
8. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
status).
9. Return Completion(status).
---*/
var nextCount = 0;
var returnCount = 0;
var iterable = {};
var x;
var iterator = {
next: function() {
nextCount += 1;
return { done: nextCount > 1 };
},
return: function() {
returnCount += 1;
}
};
iterable[Symbol.iterator] = function() {
return iterator;
};
var counter = 0;
for ([ x , , ] of [iterable]) {
assert.sameValue(nextCount, 2);
assert.sameValue(returnCount, 0);
counter += 1;
}
assert.sameValue(counter, 1);
reportCompare(0, 0);
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