// This file was procedurally generated from the following sources: // - src/dstr-assignment/array-elem-trlg-iter-rest-nrml-close-skip.case // - src/dstr-assignment/default/for-of.template /*--- description: IteratorClose is not called when rest element evaluation has exhausted 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 ] [...] 7. If AssignmentRestElement is present, then a. Let status be the result of performing IteratorDestructuringAssignmentEvaluation of AssignmentRestElement with iteratorRecord as the argument. 8. If iteratorRecord.[[done]] is false, return IteratorClose(iterator, status). 9. Return Completion(status). ---*/ var nextCount = 0; var returnCount = 0; var iterable = {}; var x, y; var iterator = { next: function() { nextCount += 1; return { value: nextCount, done: nextCount > 1 }; }, return: function() { returnCount += 1; } }; iterable[Symbol.iterator] = function() { return iterator; }; var counter = 0; for ([ x , ...y ] of [iterable]) { counter += 1; } assert.sameValue(counter, 1); assert.sameValue(nextCount, 2, 'nextCount'); assert.sameValue(returnCount, 0, 'returnCount'); assert.sameValue(x, 1, 'x'); assert.sameValue(y.length, 0, 'y.length'); reportCompare(0, 0);