tor-browser

The Tor Browser
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async-gen-meth-ary-ptrn-rest-id-iter-val-err.js (2500B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
      3 // - src/dstr-binding/error/cls-decl-async-gen-meth.template
      4 /*---
      5 description: Error forwarding when IteratorValue returns an abrupt completion (class expression method)
      6 esid: sec-class-definitions-runtime-semantics-evaluation
      7 features: [Symbol.iterator, 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           i. Let status be the result of performing
     22              PropertyDefinitionEvaluation for m with arguments proto and
     23              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    BindingRestElement : ... BindingIdentifier
     43    1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
     44       environment).
     45    2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
     46       [...]
     47       c. Let nextValue be IteratorValue(next).
     48       d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
     49          true.
     50       e. ReturnIfAbrupt(nextValue).
     51 
     52 ---*/
     53 var poisonedValue = Object.defineProperty({}, 'value', {
     54  get: function() {
     55    throw new Test262Error();
     56  }
     57 });
     58 var iter = {};
     59 iter[Symbol.iterator] = function() {
     60  return {
     61    next: function() {
     62      return poisonedValue;
     63    }
     64  };
     65 };
     66 
     67 
     68 class C {
     69  async *method([...x]) {
     70    
     71  }
     72 };
     73 
     74 var method = C.prototype.method;
     75 
     76 assert.throws(Test262Error, function() {
     77  method(iter);
     78 });
     79 
     80 reportCompare(0, 0);