array-rest-iter-get-err.js (1508B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-assignment/array-rest-iter-get-err.case 3 // - src/dstr-assignment/error/for-of.template 4 /*--- 5 description: Abrupt completion returned from GetIterator (For..of statement) 6 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 7 features: [Symbol.iterator, destructuring-binding] 8 flags: [generated] 9 info: | 10 IterationStatement : 11 for ( LeftHandSideExpression of AssignmentExpression ) Statement 12 13 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », 14 AssignmentExpression, iterate). 15 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, 16 keyResult, assignment, labelSet). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. If destructuring is true and if lhsKind is assignment, then 22 a. Assert: lhs is a LeftHandSideExpression. 23 b. Let assignmentPattern be the parse of the source text corresponding to 24 lhs using AssignmentPattern as the goal symbol. 25 [...] 26 27 ArrayAssignmentPattern : [ Elisionopt AssignmentRestElement ] 28 29 1. Let iterator be GetIterator(value). 30 2. ReturnIfAbrupt(iterator). 31 32 ---*/ 33 var iterable = {}; 34 var x; 35 iterable[Symbol.iterator] = function() { 36 throw new Test262Error(); 37 }; 38 39 var counter = 0; 40 41 assert.throws(Test262Error, function() { 42 for ([...x] of [iterable]) { 43 counter += 1; 44 } 45 counter += 1; 46 }); 47 48 assert.sameValue(counter, 0); 49 50 reportCompare(0, 0);