Source code
Revision control
Copy as Markdown
Other Tools
// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-ary-empty.case
// - src/dstr-binding/default/for-var.template
/*---
description: Rest element containing an "empty" array pattern (for statement)
esid: sec-for-statement-runtime-semantics-labelledevaluation
features: [generators, destructuring-binding]
flags: [generated]
info: |
IterationStatement :
for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement
1. Let varDcl be the result of evaluating VariableDeclarationList.
[...]
13.3.2.4 Runtime Semantics: Evaluation
VariableDeclarationList : VariableDeclarationList , VariableDeclaration
1. Let next be the result of evaluating VariableDeclarationList.
2. ReturnIfAbrupt(next).
3. Return the result of evaluating VariableDeclaration.
VariableDeclaration : BindingPattern Initializer
1. Let rhs be the result of evaluating Initializer.
2. Let rval be GetValue(rhs).
3. ReturnIfAbrupt(rval).
4. Return the result of performing BindingInitialization for BindingPattern
passing rval and undefined as 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.
[...]
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
ArrayBindingPattern : [ ]
1. Return NormalCompletion(empty).
---*/
var iterations = 0;
var iter = function*() {
iterations += 1;
}();
var iterCount = 0;
for (var [...[]] = iter; iterCount < 1; ) {
assert.sameValue(iterations, 1);
iterCount += 1;
}
assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
reportCompare(0, 0);