File: dstr-ary-ptrn-elem-id-iter-val.js

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qtdeclarative-opensource-src 5.15.8%2Bdfsg-3
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// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
// - src/dstr-binding/default/async-gen-func-expr.template
/*---
description: SingleNameBinding when value iteration was completed previously (async generator function expression)
esid: sec-asyncgenerator-definitions-evaluation
features: [async-iteration]
flags: [generated, async]
info: |
    AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) {
        AsyncGeneratorBody }

        [...]
        3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
           AsyncGeneratorBody, scope, strict).
        [...]


    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;
var f;
f = async function*([x, y, z]) {
  assert.sameValue(x, 1);
  assert.sameValue(y, 2);
  assert.sameValue(z, 3);
  callCount = callCount + 1;
};

f([1, 2, 3]).next().then(() => {
    assert.sameValue(callCount, 1, 'invoked exactly once');
}).then($DONE, $DONE);