async-func-dstr-var-async-ary-name-iter-val.js (2480B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/dstr-binding-for-await/ary-name-iter-val.case 4 // - src/dstr-binding-for-await/default/for-await-of-async-func-var-async.template 5 /*--- 6 description: SingleNameBinding with normal value iteration (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 ( ForDeclaration of AssignmentExpression ) Statement 13 14 [...] 15 2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, 16 lexicalBinding, 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 [...] 32 iii. Else, 33 1. Assert: lhsKind is lexicalBinding. 34 2. Assert: lhs is a ForDeclaration. 35 3. Let status be the result of performing BindingInitialization 36 for lhs passing nextValue and iterationEnv as arguments. 37 [...] 38 39 13.3.3.6 Runtime Semantics: IteratorBindingInitialization 40 41 SingleNameBinding : BindingIdentifier Initializer_opt 42 43 [...] 44 3. If iteratorRecord.[[done]] is false, then 45 a. Let next be IteratorStep(iteratorRecord.[[iterator]]). 46 b. If next is an abrupt completion, set iteratorRecord.[[done]] to true. 47 c. ReturnIfAbrupt(next). 48 d. If next is false, set iteratorRecord.[[done]] to true. 49 e. Else, 50 i. Let v be IteratorValue(next). 51 ii. If v is an abrupt completion, set 52 iteratorRecord.[[done]] to true. 53 iii. ReturnIfAbrupt(v). 54 4. If iteratorRecord.[[done]] is true, let v be undefined. 55 [...] 56 7. Return InitializeReferencedBinding(lhs, v). 57 ---*/ 58 59 var iterCount = 0; 60 var asyncIter = (async function*() { 61 yield* [[1, 2, 3]]; 62 })(); 63 64 async function fn() { 65 for await (var [x, y, z] of asyncIter) { 66 assert.sameValue(x, 1); 67 assert.sameValue(y, 2); 68 assert.sameValue(z, 3); 69 70 iterCount += 1; 71 } 72 } 73 74 fn() 75 .then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE) 76 .then($DONE, $DONE);