Source code

Revision control

Copy as Markdown

Other Tools

// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-obj-prop-id.case
// - src/dstr-binding/default/for-const.template
/*---
description: Rest element containing an object binding pattern (for statement)
esid: sec-for-statement-runtime-semantics-labelledevaluation
features: [destructuring-binding]
flags: [generated]
info: |
IterationStatement :
for ( LexicalDeclaration Expressionopt ; Expressionopt ) Statement
[...]
7. Let forDcl be the result of evaluating LexicalDeclaration.
[...]
LexicalDeclaration : LetOrConst BindingList ;
1. Let next be the result of evaluating BindingList.
2. ReturnIfAbrupt(next).
3. Return NormalCompletion(empty).
BindingList : BindingList , LexicalBinding
1. Let next be the result of evaluating BindingList.
2. ReturnIfAbrupt(next).
3. Return the result of evaluating LexicalBinding.
LexicalBinding : BindingPattern Initializer
1. Let rhs be the result of evaluating Initializer.
2. Let value be GetValue(rhs).
3. ReturnIfAbrupt(value).
4. Let env be the running execution context’s LexicalEnvironment.
5. Return the result of performing BindingInitialization for BindingPattern
using value and env as the arguments.
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
BindingRestElement : ... BindingPattern
1. Let A be ArrayCreate(0).
[...]
3. Repeat
[...]
b. If iteratorRecord.[[done]] is true, then
i. Return the result of performing BindingInitialization of
BindingPattern with A and environment as the arguments.
[...]
---*/
let length = "outer";
var iterCount = 0;
for (const [...{ 0: v, 1: w, 2: x, 3: y, length: z }] = [7, 8, 9]; iterCount < 1; ) {
assert.sameValue(v, 7);
assert.sameValue(w, 8);
assert.sameValue(x, 9);
assert.sameValue(y, undefined);
assert.sameValue(z, 3);
assert.sameValue(length, "outer", "the length prop is not set as a binding name");
iterCount += 1;
}
assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
reportCompare(0, 0);