mirror of https://github.com/tc39/test262.git
64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-rest-ary-elem.case
|
|
// - src/dstr-binding/default/async-gen-func-decl.template
|
|
/*---
|
|
description: Rest element containing an array BindingElementList pattern (async generator function declaration)
|
|
esid: sec-asyncgenerator-definitions-instantiatefunctionobject
|
|
features: [async-iteration]
|
|
flags: [generated, async]
|
|
info: |
|
|
AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
|
|
( FormalParameters ) { AsyncGeneratorBody }
|
|
|
|
[...]
|
|
3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
|
|
scope, strict).
|
|
[...]
|
|
|
|
|
|
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
|
|
|
|
SingleNameBinding : BindingIdentifier Initializeropt
|
|
|
|
[...]
|
|
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).
|
|
---*/
|
|
|
|
|
|
var callCount = 0;
|
|
async function* f([...[x, y, z]]) {
|
|
assert.sameValue(x, 3);
|
|
assert.sameValue(y, 4);
|
|
assert.sameValue(z, 5);
|
|
callCount = callCount + 1;
|
|
};
|
|
f([3, 4, 5]).next().then(() => {
|
|
assert.sameValue(callCount, 1, 'invoked exactly once');
|
|
}).then($DONE, $DONE);
|