tor-browser

The Tor Browser
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gen-meth-static-dflt-obj-ptrn-rest-getter.js (2807B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-rest-getter.case
      3 // - src/dstr-binding/default/cls-expr-gen-meth-static-dflt.template
      4 /*---
      5 description: Getter is called when obj is being deconstructed to a rest Object (static class expression generator method (default parameter))
      6 esid: sec-class-definitions-runtime-semantics-evaluation
      7 features: [object-rest, generators, destructuring-binding, default-parameters]
      8 flags: [generated]
      9 includes: [propertyHelper.js]
     10 info: |
     11    ClassExpression : class BindingIdentifieropt ClassTail
     12 
     13    1. If BindingIdentifieropt is not present, let className be undefined.
     14    2. Else, let className be StringValue of BindingIdentifier.
     15    3. Let value be the result of ClassDefinitionEvaluation of ClassTail
     16       with argument className.
     17    [...]
     18 
     19    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     20 
     21    21. For each ClassElement m in order from methods
     22        a. If IsStatic of m is false, then
     23        b. Else,
     24           Let status be the result of performing PropertyDefinitionEvaluation
     25           for m with arguments F and false.
     26    [...]
     27 
     28    14.4.13 Runtime Semantics: PropertyDefinitionEvaluation
     29 
     30    GeneratorMethod :
     31        * PropertyName ( StrictFormalParameters ) { GeneratorBody }
     32 
     33    1. Let propKey be the result of evaluating PropertyName.
     34    2. ReturnIfAbrupt(propKey).
     35    3. If the function code for this GeneratorMethod is strict mode code,
     36       let strict be true. Otherwise let strict be false.
     37    4. Let scope be the running execution context's LexicalEnvironment.
     38    5. Let closure be GeneratorFunctionCreate(Method,
     39       StrictFormalParameters, GeneratorBody, scope, strict).
     40 
     41    9.2.1 [[Call]] ( thisArgument, argumentsList)
     42 
     43    [...]
     44    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     45    [...]
     46 
     47    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     48 
     49    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     50    [...]
     51 
     52    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     53 
     54    [...]
     55    23. Let iteratorRecord be Record {[[iterator]]:
     56        CreateListIterator(argumentsList), [[done]]: false}.
     57    24. If hasDuplicates is true, then
     58        [...]
     59    25. Else,
     60        b. Let formalStatus be IteratorBindingInitialization for formals with
     61           iteratorRecord and env as arguments.
     62    [...]
     63 ---*/
     64 var count = 0;
     65 
     66 var callCount = 0;
     67 var C = class {
     68  static *method({...x} = { get v() { count++; return 2; } }) {
     69    assert.sameValue(count, 1);
     70 
     71    verifyProperty(x, "v", {
     72      enumerable: true,
     73      writable: true,
     74      configurable: true,
     75      value: 2
     76    });
     77    callCount = callCount + 1;
     78  }
     79 };
     80 
     81 C.method().next();
     82 assert.sameValue(callCount, 1, 'method invoked exactly once');
     83 
     84 reportCompare(0, 0);