mirror of https://github.com/tc39/test262.git
71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-assignment/array-rest-elision-iter-abpt.case
|
|
// - src/dstr-assignment/error/for-of.template
|
|
/*---
|
|
description: IteratorClose is not called when assignment evaluation produces an abrupt completion (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 ( 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 : [ Elisionopt AssignmentRestElement ]
|
|
|
|
[...]
|
|
4. 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
|
|
i. If iteratorRecord.[[done]] is false, return
|
|
IteratorClose(iterator, status).
|
|
ii. Return Completion(status).
|
|
|
|
---*/
|
|
var nextCount = 0;
|
|
var returnCount = 0;
|
|
var iterable = {};
|
|
var iterator = {
|
|
next: function() {
|
|
nextCount += 1;
|
|
throw new Test262Error();
|
|
},
|
|
return: function() {
|
|
returnCount += 1;
|
|
}
|
|
};
|
|
iterable[Symbol.iterator] = function() {
|
|
return iterator;
|
|
};
|
|
var x;
|
|
|
|
var counter = 0;
|
|
|
|
assert.throws(Test262Error, function() {
|
|
for ([ , ...x] of [iterable]) {
|
|
counter += 1;
|
|
}
|
|
counter += 1;
|
|
});
|
|
|
|
assert.sameValue(counter, 0);
|
|
|
|
assert.sameValue(nextCount, 1);
|
|
assert.sameValue(returnCount, 0);
|