async-func-dstr-var-ary-ptrn-elem-id-iter-val.js (2330B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-ptrn-elem-id-iter-val.case 4 // - src/dstr-binding-for-await/default/for-await-of-async-func-var.template 5 /*--- 6 description: SingleNameBinding when value iteration was completed previously (for-await-of statement) 7 esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation 8 features: [destructuring-binding, async-iteration] 9 flags: [generated, async] 10 info: | 11 IterationStatement : 12 for await ( var ForBinding of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult, 16 varBinding, labelSet, async). 17 18 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation 19 20 [...] 21 4. Let destructuring be IsDestructuring of lhs. 22 [...] 23 6. Repeat 24 [...] 25 j. If destructuring is false, then 26 [...] 27 k. Else 28 i. If lhsKind is assignment, then 29 [...] 30 ii. Else if lhsKind is varBinding, then 31 1. Assert: lhs is a ForBinding. 32 2. Let status be the result of performing BindingInitialization 33 for lhs passing nextValue and undefined as the arguments. 34 [...] 35 36 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 37 38 SingleNameBinding : BindingIdentifier Initializer_opt 39 40 [...] 41 3. If iteratorRecord.[[done]] is false, then 42 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 43 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 44 c. ReturnIfAbrupt(next). 45 d. If next is false, set iteratorRecord.[[done]] to true. 46 e. Else, 47 i. Let v be IteratorValue(next). 48 ii. If v is an abrupt completion, set 49 iteratorRecord.[[done]] to true. 50 iii. ReturnIfAbrupt(v). 51 4. If iteratorRecord.[[done]] is true, let v be undefined. 52 [...] 53 7. Return InitializeReferencedBinding(lhs, v). 54 ---*/ 55 56 var iterCount = 0; 57 58 async function fn() { 59 for await (var [x, y, z] of [[1, 2, 3]]) { 60 assert.sameValue(x, 1); 61 assert.sameValue(y, 2); 62 assert.sameValue(z, 3); 63 64 iterCount += 1; 65 } 66 } 67 68 fn() 69 .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) 70 .then($DONE, $DONE);