mirror of https://github.com/tc39/test262.git
70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case
|
|
// - src/dstr-binding/default/for-await-of-async-gen-var-async.template
|
|
/*---
|
|
description: When DestructuringAssignmentTarget is an object literal, it should be parsed parsed as a DestructuringAssignmentPattern and evaluated as a destructuring assignment and object rest desconstruction is allowed in that case. (for-await-of statement)
|
|
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
|
|
features: [object-rest, destructuring-binding, async-iteration]
|
|
flags: [generated, async]
|
|
includes: [propertyHelper.js]
|
|
info: |
|
|
IterationStatement :
|
|
for await ( ForDeclaration of AssignmentExpression ) Statement
|
|
|
|
[...]
|
|
2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
|
|
lexicalBinding, labelSet, async).
|
|
|
|
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
|
|
|
|
[...]
|
|
4. Let destructuring be IsDestructuring of lhs.
|
|
[...]
|
|
6. Repeat
|
|
[...]
|
|
j. If destructuring is false, then
|
|
[...]
|
|
k. Else
|
|
i. If lhsKind is assignment, then
|
|
[...]
|
|
ii. Else if lhsKind is varBinding, then
|
|
[...]
|
|
iii. Else,
|
|
1. Assert: lhsKind is lexicalBinding.
|
|
2. Assert: lhs is a ForDeclaration.
|
|
3. Let status be the result of performing BindingInitialization
|
|
for lhs passing nextValue and iterationEnv as arguments.
|
|
[...]
|
|
---*/
|
|
|
|
var iterCount = 0;
|
|
var asyncIter = (async function*() {
|
|
yield* [{a: 1, b: 2, c: 3, d: 4, e: 5}];
|
|
})();
|
|
|
|
async function *fn() {
|
|
for await (var {a, b, ...{c, ...rest}} of asyncIter) {
|
|
assert.sameValue(a, 1);
|
|
assert.sameValue(b, 2);
|
|
assert.sameValue(c, 3);
|
|
|
|
assert.sameValue(rest.d, 4);
|
|
assert.sameValue(rest.e, 5);
|
|
|
|
verifyEnumerable(rest, "d");
|
|
verifyWritable(rest, "d");
|
|
verifyConfigurable(rest, "d");
|
|
|
|
verifyEnumerable(rest, "e");
|
|
verifyWritable(rest, "e");
|
|
verifyConfigurable(rest, "e");
|
|
|
|
|
|
iterCount += 1;
|
|
}
|
|
}
|
|
|
|
fn().next()
|
|
.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
|
|
.then($DONE, $DONE);
|