tor-browser

The Tor Browser
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meth-static-dflt-ary-init-iter-no-close.js (2766B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-init-iter-no-close.case
      3 // - src/dstr-binding/default/cls-decl-meth-static-dflt.template
      4 /*---
      5 description: Iterator is not closed when exhausted by pattern evaluation (static class expression method (default parameter))
      6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      7 features: [Symbol.iterator, destructuring-binding, default-parameters]
      8 flags: [generated]
      9 info: |
     10    ClassDeclaration : class BindingIdentifier ClassTail
     11 
     12    1. Let className be StringValue of BindingIdentifier.
     13    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
     14       argument className.
     15    [...]
     16 
     17    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     18 
     19    21. For each ClassElement m in order from methods
     20        a. If IsStatic of m is false, then
     21        b. Else,
     22           Let status be the result of performing PropertyDefinitionEvaluation for
     23           m with arguments F and false.
     24    [...]
     25 
     26    14.3.8 Runtime Semantics: DefineMethod
     27 
     28    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     29 
     30    [...]
     31    6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
     32       scope, strict). If functionPrototype was passed as a parameter then pass its
     33       value as the functionPrototype optional argument of FunctionCreate.
     34    [...]
     35 
     36    9.2.1 [[Call]] ( thisArgument, argumentsList)
     37 
     38    [...]
     39    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     40    [...]
     41 
     42    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     43 
     44    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     45    [...]
     46 
     47    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     48 
     49    [...]
     50    23. Let iteratorRecord be Record {[[iterator]]:
     51        CreateListIterator(argumentsList), [[done]]: false}.
     52    24. If hasDuplicates is true, then
     53        [...]
     54    25. Else,
     55        b. Let formalStatus be IteratorBindingInitialization for formals with
     56           iteratorRecord and env as arguments.
     57    [...]
     58 
     59    13.3.3.5 Runtime Semantics: BindingInitialization
     60 
     61    BindingPattern : ArrayBindingPattern
     62 
     63    [...]
     64    4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
     65       result).
     66    [...]
     67 
     68 ---*/
     69 var doneCallCount = 0;
     70 var iter = {};
     71 iter[Symbol.iterator] = function() {
     72  return {
     73    next: function() {
     74      return { value: null, done: true };
     75    },
     76    return: function() {
     77      doneCallCount += 1;
     78      return {};
     79    }
     80  };
     81 };
     82 
     83 var callCount = 0;
     84 class C {
     85  static method([x] = iter) {
     86    assert.sameValue(doneCallCount, 0);
     87    callCount = callCount + 1;
     88  }
     89 };
     90 
     91 C.method();
     92 assert.sameValue(callCount, 1, 'method invoked exactly once');
     93 
     94 reportCompare(0, 0);