tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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eval-var-scope-syntax-err.js (1831B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/function-forms/eval-var-scope-syntax-err.case
      3 // - src/function-forms/error-no-strict/gen-func-expr.template
      4 /*---
      5 description: sloppy direct eval in params introduces var (generator function expression in sloppy code)
      6 esid: sec-generator-function-definitions-runtime-semantics-evaluation
      7 features: [default-parameters, generators]
      8 flags: [generated, noStrict]
      9 info: |
     10    GeneratorExpression : function * ( FormalParameters ) { GeneratorBody }
     11 
     12        [...]
     13        3. Let closure be GeneratorFunctionCreate(Normal, FormalParameters,
     14           GeneratorBody, scope, strict).
     15        [...]
     16 
     17    9.2.1 [[Call]] ( thisArgument, argumentsList)
     18 
     19    [...]
     20    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     21    [...]
     22 
     23    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     24 
     25    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     26    [...]
     27 
     28    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     29 
     30    [...]
     31    23. Let iteratorRecord be Record {[[iterator]]:
     32        CreateListIterator(argumentsList), [[done]]: false}.
     33    24. If hasDuplicates is true, then
     34        [...]
     35    25. Else,
     36        b. Let formalStatus be IteratorBindingInitialization for formals with
     37           iteratorRecord and env as arguments.
     38    [...]
     39 
     40 
     41    
     42    Runtime Semantics: IteratorBindingInitialization
     43    FormalParameter : BindingElement
     44 
     45    1. Return the result of performing IteratorBindingInitialization for BindingElement with arguments iteratorRecord and environment.
     46 
     47 ---*/
     48 
     49 var callCount = 0;
     50 var f;
     51 f = function*(a = eval("var a = 42")) {
     52  
     53  callCount = callCount + 1;
     54 };
     55 
     56 assert.throws(SyntaxError, function() {
     57  f();
     58 });
     59 assert.sameValue(callCount, 0, 'generator function body not evaluated');
     60 
     61 reportCompare(0, 0);