tor-browser

The Tor Browser
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dflt-params-duplicates.js (2582B)

      1 // |reftest| error:SyntaxError
      2 // This file was procedurally generated from the following sources:
      3 // - src/function-forms/dflt-params-duplicates.case
      4 // - src/function-forms/syntax/cls-decl-meth.template
      5 /*---
      6 description: It is a Syntax Error if BoundNames of FormalParameters contains any duplicate elements. (class expression method)
      7 esid: sec-runtime-semantics-bindingclassdeclarationevaluation
      8 features: [default-parameters]
      9 flags: [generated]
     10 negative:
     11  phase: parse
     12  type: SyntaxError
     13 info: |
     14    ClassDeclaration : class BindingIdentifier ClassTail
     15 
     16    1. Let className be StringValue of BindingIdentifier.
     17    2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
     18       argument className.
     19    [...]
     20 
     21    14.5.14 Runtime Semantics: ClassDefinitionEvaluation
     22 
     23    21. For each ClassElement m in order from methods
     24        a. If IsStatic of m is false, then
     25           i. Let status be the result of performing
     26              PropertyDefinitionEvaluation for m with arguments proto and
     27              false.
     28        [...]
     29 
     30    14.3.8 Runtime Semantics: DefineMethod
     31 
     32    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     33 
     34    [...]
     35    6. Let closure be FunctionCreate(kind, StrictFormalParameters, FunctionBody,
     36       scope, strict). If functionPrototype was passed as a parameter then pass its
     37       value as the functionPrototype optional argument of FunctionCreate.
     38    [...]
     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    14.1.2 Static Semantics: Early Errors
     64 
     65    StrictFormalParameters : FormalParameters
     66 
     67    - It is a Syntax Error if BoundNames of FormalParameters contains any
     68      duplicate elements.
     69 
     70    FormalParameters : FormalParameterList
     71 
     72    - It is a Syntax Error if IsSimpleParameterList of FormalParameterList is
     73      false and BoundNames of FormalParameterList contains any duplicate
     74      elements.
     75 
     76 ---*/
     77 $DONOTEVALUATE();
     78 
     79 class C {
     80  method(x = 0, x) {
     81    
     82  }
     83 }