tor-browser

The Tor Browser
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gen-meth-ary-ptrn-elem-id-iter-val.js (2679B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
      3 // - src/dstr-binding/default/gen-meth.template
      4 /*---
      5 description: SingleNameBinding when value iteration was completed previously (generator method)
      6 esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation
      7 features: [generators, destructuring-binding]
      8 flags: [generated]
      9 info: |
     10    GeneratorMethod :
     11        * PropertyName ( StrictFormalParameters ) { GeneratorBody }
     12 
     13    1. Let propKey be the result of evaluating PropertyName.
     14    2. ReturnIfAbrupt(propKey).
     15    3. If the function code for this GeneratorMethod is strict mode code,
     16       let strict be true. Otherwise let strict be false.
     17    4. Let scope be the running execution context's LexicalEnvironment.
     18    5. Let closure be GeneratorFunctionCreate(Method,
     19       StrictFormalParameters, GeneratorBody, scope, strict).
     20    [...]
     21 
     22    9.2.1 [[Call]] ( thisArgument, argumentsList)
     23 
     24    [...]
     25    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     26    [...]
     27 
     28    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     29 
     30    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     31    [...]
     32 
     33    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     34 
     35    [...]
     36    23. Let iteratorRecord be Record {[[iterator]]:
     37        CreateListIterator(argumentsList), [[done]]: false}.
     38    24. If hasDuplicates is true, then
     39        [...]
     40    25. Else,
     41        b. Let formalStatus be IteratorBindingInitialization for formals with
     42           iteratorRecord and env as arguments.
     43    [...]
     44 
     45    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     46 
     47    SingleNameBinding : BindingIdentifier Initializeropt
     48 
     49    [...]
     50    4. If iteratorRecord.[[done]] is false, then
     51       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     52       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
     53       c. ReturnIfAbrupt(next).
     54       d. If next is false, set iteratorRecord.[[done]] to true.
     55       e. Else,
     56          [...]
     57          i. Let v be IteratorValue(next).
     58          ii. If v is an abrupt completion, set
     59              iteratorRecord.[[done]] to true.
     60          iii. ReturnIfAbrupt(v).
     61    5. If iteratorRecord.[[done]] is true, let v be undefined.
     62    [...]
     63    8. Return InitializeReferencedBinding(lhs, v).
     64 ---*/
     65 
     66 var callCount = 0;
     67 var obj = {
     68  *method([x, y, z]) {
     69    assert.sameValue(x, 1);
     70    assert.sameValue(y, 2);
     71    assert.sameValue(z, 3);
     72    callCount = callCount + 1;
     73  }
     74 };
     75 
     76 obj.method([1, 2, 3]).next();
     77 assert.sameValue(callCount, 1, 'generator method invoked exactly once');
     78 
     79 reportCompare(0, 0);