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67 lines
2.2 KiB
JavaScript
67 lines
2.2 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case
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// - src/dstr-binding/default/for-await-of-async-func-const.template
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/*---
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description: SingleNameBinding assigns name to "anonymous" functions (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: [generated, async]
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info: |
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IterationStatement :
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for await ( ForDeclaration of AssignmentExpression ) Statement
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[...]
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2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
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lexicalBinding, labelSet, async).
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13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
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[...]
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3. Let destructuring be IsDestructuring of lhs.
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[...]
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5. Repeat
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[...]
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h. If destructuring is false, then
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[...]
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i. 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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[...]
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iii. Else,
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1. Assert: lhsKind is lexicalBinding.
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2. Assert: lhs is a ForDeclaration.
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3. Let status be the result of performing BindingInitialization
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for lhs passing nextValue and iterationEnv as arguments.
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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SingleNameBinding : BindingIdentifier Initializeropt
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[...]
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6. If Initializer is present and v is undefined, then
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a. Let defaultValue be the result of evaluating Initializer.
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b. Let v be GetValue(defaultValue).
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c. ReturnIfAbrupt(v).
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d. If IsAnonymousFunctionDefinition(Initializer) is true, then
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[...]
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7. If environment is undefined, return PutValue(lhs, v).
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8. Return InitializeReferencedBinding(lhs, v).
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---*/
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var iterCount = 0;
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async function fn() {
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for await (const [fn = function () {}, xFn = function x() {}] of [[]]) {
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assert.sameValue(fn.name, 'fn');
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assert.notSameValue(xFn.name, 'xFn');
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iterCount += 1;
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}
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}
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fn()
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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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