tor-browser

The Tor Browser
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dflt-ary-ptrn-elem-id-iter-complete.js (2075B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-elem-id-iter-complete.case
      3 // - src/dstr-binding/default/arrow-function-dflt.template
      4 /*---
      5 description: SingleNameBinding when value iteration completes (arrow function expression (default parameter))
      6 esid: sec-arrow-function-definitions-runtime-semantics-evaluation
      7 features: [destructuring-binding, default-parameters]
      8 flags: [generated]
      9 info: |
     10    ArrowFunction : ArrowParameters => ConciseBody
     11 
     12    [...]
     13    4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
     14    [...]
     15 
     16    9.2.1 [[Call]] ( thisArgument, argumentsList)
     17 
     18    [...]
     19    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     20    [...]
     21 
     22    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     23 
     24    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     25    [...]
     26 
     27    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     28 
     29    [...]
     30    23. Let iteratorRecord be Record {[[iterator]]:
     31        CreateListIterator(argumentsList), [[done]]: false}.
     32    24. If hasDuplicates is true, then
     33        [...]
     34    25. Else,
     35        b. Let formalStatus be IteratorBindingInitialization for formals with
     36           iteratorRecord and env as arguments.
     37    [...]
     38 
     39    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     40 
     41    SingleNameBinding : BindingIdentifier Initializeropt
     42 
     43    [...]
     44    4. If iteratorRecord.[[done]] is false, then
     45       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     46       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
     47       c. ReturnIfAbrupt(next).
     48       d. If next is false, set iteratorRecord.[[done]] to true.
     49       e. Else,
     50          [...]
     51    5. If iteratorRecord.[[done]] is true, let v be undefined.
     52    [...]
     53    8. Return InitializeReferencedBinding(lhs, v).
     54 ---*/
     55 
     56 var callCount = 0;
     57 var f;
     58 f = ([x] = []) => {
     59  assert.sameValue(x, undefined);
     60  callCount = callCount + 1;
     61 };
     62 
     63 f();
     64 assert.sameValue(callCount, 1, 'arrow function invoked exactly once');
     65 
     66 reportCompare(0, 0);