mirror of https://github.com/tc39/test262.git
51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elision.case
|
|
// - src/dstr-binding/default/var-stmt.template
|
|
/*---
|
|
description: Elision advances iterator (`var` statement)
|
|
esid: sec-variable-statement-runtime-semantics-evaluation
|
|
es6id: 13.3.2.4
|
|
features: [generators, destructuring-binding]
|
|
flags: [generated]
|
|
info: |
|
|
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 [,] = g();
|
|
|
|
assert.sameValue(first, 1);
|
|
assert.sameValue(second, 0);
|