mirror of https://github.com/tc39/test262.git
59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-rest-id.case
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// - src/dstr-binding/default/for-of-var.template
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/*---
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description: Lone rest element (for-of statement)
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esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
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es6id: 13.7.5.11
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features: [destructuring-binding]
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flags: [generated]
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info: |
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IterationStatement :
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for ( var ForBinding of AssignmentExpression ) Statement
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[...]
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3. Return ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
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varBinding, labelSet).
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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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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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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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BindingRestElement : ... BindingIdentifier
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[...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
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[...]
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f. Let status be CreateDataProperty(A, ToString (n), nextValue).
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[...]
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---*/
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var values = [1, 2, 3];
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var iterCount = 0;
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for (var [...x] of [values]) {
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assert(Array.isArray(x));
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assert.sameValue(x.length, 3);
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assert.sameValue(x[0], 1);
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assert.sameValue(x[1], 2);
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assert.sameValue(x[2], 3);
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assert.notSameValue(x, values);
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iterCount += 1;
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}
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assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
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