test262/test/language/statements/const/dstr-ary-name-iter-val.js

44 lines
1.5 KiB
JavaScript
Raw Normal View History

// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-name-iter-val.case
// - src/dstr-binding/default/const-stmt.template
/*---
description: SingleNameBinding with normal value iteration (`const` statement)
es6id: 13.3.1.4
flags: [generated]
2016-04-26 19:48:22 +02:00
info: |
LexicalBinding : BindingPattern Initializer
2016-04-26 19:48:22 +02:00
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
2016-04-26 19:48:22 +02:00
SingleNameBinding : BindingIdentifier Initializeropt
2016-04-26 19:48:22 +02:00
[...]
4. 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.
e. Else,
[...]
i. Let v be IteratorValue(next).
ii. If v is an abrupt completion, set
iteratorRecord.[[done]] to true.
iii. ReturnIfAbrupt(v).
5. If iteratorRecord.[[done]] is true, let v be undefined.
[...]
8. Return InitializeReferencedBinding(lhs, v).
---*/
const [x, y, z] = [1, 2, 3];
assert.sameValue(x, 1);
assert.sameValue(y, 2);
assert.sameValue(z, 3);