mirror of
https://github.com/tc39/test262.git
synced 2025-10-31 11:44:31 +01:00
70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elision.case
|
|
// - src/dstr-binding/default/for-var.template
|
|
/*---
|
|
description: Elision advances iterator (for statement)
|
|
esid: sec-for-statement-runtime-semantics-labelledevaluation
|
|
es6id: 13.7.4.7
|
|
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
|
|
|
|
ArrayBindingPattern : [ Elision ]
|
|
|
|
1. Return the result of performing
|
|
IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
|
|
as the argument.
|
|
|
|
12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
|
|
|
|
Elision : ,
|
|
|
|
1. If iteratorRecord.[[done]] is false, then
|
|
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
|
|
b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
|
|
c. ReturnIfAbrupt(next).
|
|
d. If next is false, set iteratorRecord.[[done]] to true.
|
|
2. Return NormalCompletion(empty).
|
|
|
|
---*/
|
|
var first = 0;
|
|
var second = 0;
|
|
function* g() {
|
|
first += 1;
|
|
yield;
|
|
second += 1;
|
|
};
|
|
|
|
var iterCount = 0;
|
|
|
|
for (var [,] = g(); iterCount < 1; ) {
|
|
assert.sameValue(first, 1);
|
|
assert.sameValue(second, 0);
|
|
iterCount += 1;
|
|
}
|
|
|
|
assert.sameValue(iterCount, 1, 'Iteration occurred as expected');
|