tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dflt-params-duplicates.js (1869B)

      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/func-decl.template
      5 /*---
      6 description: It is a Syntax Error if BoundNames of FormalParameters contains any duplicate elements. (function declaration)
      7 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
      8 features: [default-parameters]
      9 flags: [generated]
     10 negative:
     11  phase: parse
     12  type: SyntaxError
     13 info: |
     14    FunctionDeclaration :
     15        function BindingIdentifier ( FormalParameters ) { FunctionBody }
     16 
     17        [...]
     18        3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
     19           scope, strict).
     20        [...]
     21 
     22    9.2.1 [[Call]] ( thisArgument, argumentsList)
     23 
     24    [...]
     25    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     26    [...]
     27 
     28    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     29 
     30    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     31    [...]
     32 
     33    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     34 
     35    [...]
     36    23. Let iteratorRecord be Record {[[iterator]]:
     37        CreateListIterator(argumentsList), [[done]]: false}.
     38    24. If hasDuplicates is true, then
     39        [...]
     40    25. Else,
     41        b. Let formalStatus be IteratorBindingInitialization for formals with
     42           iteratorRecord and env as arguments.
     43    [...]
     44 
     45    14.1.2 Static Semantics: Early Errors
     46 
     47    StrictFormalParameters : FormalParameters
     48 
     49    - It is a Syntax Error if BoundNames of FormalParameters contains any
     50      duplicate elements.
     51 
     52    FormalParameters : FormalParameterList
     53 
     54    - It is a Syntax Error if IsSimpleParameterList of FormalParameterList is
     55      false and BoundNames of FormalParameterList contains any duplicate
     56      elements.
     57 
     58 ---*/
     59 $DONOTEVALUATE();
     60 
     61 function f(x = 0, x) {
     62  
     63 }