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50 lines
1.4 KiB
Plaintext
50 lines
1.4 KiB
Plaintext
// Copyright (C) 2017 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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path: language/statements/for-await-of/async-gen-dstr-var-
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name: for-await-of statement
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esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
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features: [destructuring-binding, async-iteration]
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flags: [async]
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info: |
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IterationStatement :
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for await ( var ForBinding of AssignmentExpression ) Statement
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[...]
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2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
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varBinding, labelSet, async).
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13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
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[...]
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4. Let destructuring be IsDestructuring of lhs.
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[...]
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6. Repeat
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[...]
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j. If destructuring is false, then
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[...]
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k. Else
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i. If lhsKind is assignment, then
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[...]
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ii. Else if lhsKind is varBinding, then
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1. Assert: lhs is a ForBinding.
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2. Let status be the result of performing BindingInitialization
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for lhs passing nextValue and undefined as the arguments.
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[...]
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---*/
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var iterCount = 0;
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async function *fn() {
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for await (var /*{ elems }*/ of [/*{ vals }*/]) {
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/*{ body }*/
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iterCount += 1;
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}
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}
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fn().next()
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.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
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.then($DONE, $DONE);
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