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private-gen-meth-static-dflt-ary-ptrn-rest-ary-elision.js (3851B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-ary-elision.case
      3 // - src/dstr-binding/default/cls-expr-private-gen-meth-static-dflt.template
      4 /*---
      5 description: Rest element containing an elision (private static class expression generator method (default parameter))
      6 esid: sec-class-definitions-runtime-semantics-evaluation
      7 features: [generators, class, class-static-methods-private, destructuring-binding, default-parameters]
      8 flags: [generated]
      9 info: |
     10    ClassExpression : class BindingIdentifieropt ClassTail
     11 
     12    1. If BindingIdentifieropt is not present, let className be undefined.
     13    2. Else, let className be StringValue of BindingIdentifier.
     14    3. Let value be the result of ClassDefinitionEvaluation of ClassTail
     15       with argument className.
     16    [...]
     17 
     18    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     19 
     20    21. For each ClassElement m in order from methods
     21        a. If IsStatic of m is false, then
     22        b. Else,
     23           Let status be the result of performing PropertyDefinitionEvaluation
     24           for m with arguments F and false.
     25    [...]
     26 
     27    14.4.13 Runtime Semantics: PropertyDefinitionEvaluation
     28 
     29    GeneratorMethod :
     30        * PropertyName ( StrictFormalParameters ) { GeneratorBody }
     31 
     32    1. Let propKey be the result of evaluating PropertyName.
     33    2. ReturnIfAbrupt(propKey).
     34    3. If the function code for this GeneratorMethod is strict mode code,
     35       let strict be true. Otherwise let strict be false.
     36    4. Let scope be the running execution context's LexicalEnvironment.
     37    5. Let closure be GeneratorFunctionCreate(Method,
     38       StrictFormalParameters, GeneratorBody, scope, strict).
     39 
     40    9.2.1 [[Call]] ( thisArgument, argumentsList)
     41 
     42    [...]
     43    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     44    [...]
     45 
     46    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     47 
     48    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     49    [...]
     50 
     51    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     52 
     53    [...]
     54    23. Let iteratorRecord be Record {[[iterator]]:
     55        CreateListIterator(argumentsList), [[done]]: false}.
     56    24. If hasDuplicates is true, then
     57        [...]
     58    25. Else,
     59        b. Let formalStatus be IteratorBindingInitialization for formals with
     60           iteratorRecord and env as arguments.
     61    [...]
     62 
     63    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     64 
     65    BindingRestElement : ... BindingPattern
     66 
     67    1. Let A be ArrayCreate(0).
     68    [...]
     69    3. Repeat
     70       [...]
     71       b. If iteratorRecord.[[done]] is true, then
     72          i. Return the result of performing BindingInitialization of
     73             BindingPattern with A and environment as the arguments.
     74       [...]
     75 
     76    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     77 
     78    ArrayBindingPattern : [ Elision ]
     79 
     80    1. Return the result of performing
     81       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
     82       as the argument.
     83 
     84    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
     85 
     86    Elision : ,
     87 
     88    1. If iteratorRecord.[[done]] is false, then
     89       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     90       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
     91       c. ReturnIfAbrupt(next).
     92       d. If next is false, set iteratorRecord.[[done]] to true.
     93    2. Return NormalCompletion(empty).
     94 
     95 ---*/
     96 var first = 0;
     97 var second = 0;
     98 function* g() {
     99  first += 1;
    100  yield;
    101  second += 1;
    102 };
    103 
    104 var callCount = 0;
    105 var C = class {
    106  static * #method([...[,]] = g()) {
    107    assert.sameValue(first, 1);
    108    assert.sameValue(second, 1);
    109    callCount = callCount + 1;
    110  }
    111 
    112  static get method() {
    113    return this.#method;
    114  }
    115 };
    116 
    117 C.method().next();
    118 assert.sameValue(callCount, 1, 'method invoked exactly once');
    119 
    120 reportCompare(0, 0);