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async-gen-meth-static-dflt-ary-ptrn-elision-step-err.js (2557B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-elision-step-err.case
      3 // - src/dstr-binding/error/cls-decl-async-gen-meth-static-dflt.template
      4 /*---
      5 description: Elision advances iterator and forwards abrupt completions (static class expression async generator method (default parameter))
      6 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      7 features: [generators, async-iteration]
      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    Runtime Semantics: PropertyDefinitionEvaluation
     27 
     28    AsyncGeneratorMethod :
     29        async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
     30            { AsyncGeneratorBody }
     31 
     32    1. Let propKey be the result of evaluating PropertyName.
     33    2. ReturnIfAbrupt(propKey).
     34    3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
     35       Otherwise let strict be false.
     36    4. Let scope be the running execution context's LexicalEnvironment.
     37    5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
     38       AsyncGeneratorBody, scope, strict).
     39    [...]
     40 
     41    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     42 
     43    ArrayBindingPattern : [ Elision ]
     44 
     45    1. Return the result of performing
     46       IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
     47       as the argument.
     48 
     49    12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
     50 
     51    Elision : ,
     52 
     53    1. If iteratorRecord.[[done]] is false, then
     54       a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
     55       b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
     56       c. ReturnIfAbrupt(next).
     57 
     58 ---*/
     59 var following = 0;
     60 var iter =function* () {
     61  throw new Test262Error();
     62  following += 1;
     63 }();
     64 
     65 
     66 class C {
     67  static async *method([,] = iter) {
     68    
     69  }
     70 };
     71 
     72 var method = C.method;
     73 
     74 assert.throws(Test262Error, function() {
     75  method();
     76 });
     77 
     78 iter.next();
     79 assert.sameValue(following, 0, 'Iterator was properly closed.');
     80 
     81 reportCompare(0, 0);