ary-ptrn-elision-step-err.js (1527B)
1 // This file was procedurally generated from the following sources: 2 // - src/dstr-binding/ary-ptrn-elision-step-err.case 3 // - src/dstr-binding/error/var-stmt.template 4 /*--- 5 description: Elision advances iterator and forwards abrupt completions (`var` statement) 6 esid: sec-variable-statement-runtime-semantics-evaluation 7 features: [generators, destructuring-binding] 8 flags: [generated] 9 info: | 10 VariableDeclaration : BindingPattern Initializer 11 12 1. Let rhs be the result of evaluating Initializer. 13 2. Let rval be GetValue(rhs). 14 3. ReturnIfAbrupt(rval). 15 4. Return the result of performing BindingInitialization for 16 BindingPattern passing rval and undefined as arguments. 17 18 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 19 20 ArrayBindingPattern : [ Elision ] 21 22 1. Return the result of performing 23 IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord 24 as the argument. 25 26 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation 27 28 Elision : , 29 30 1. If iteratorRecord.[[done]] is false, then 31 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 32 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 33 c. ReturnIfAbrupt(next). 34 35 ---*/ 36 var following = 0; 37 var iter =function* () { 38 throw new Test262Error(); 39 following += 1; 40 }(); 41 42 assert.throws(Test262Error, function() { 43 var [,] = iter; 44 }); 45 46 iter.next(); 47 assert.sameValue(following, 0, 'Iterator was properly closed.'); 48 49 reportCompare(0, 0);