tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

gen-meth-dflt-params-ref-later.js (2334B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/function-forms/dflt-params-ref-later.case
      3 // - src/function-forms/error/gen-meth.template
      4 /*---
      5 description: Referencing a parameter that occurs later in the ParameterList (generator method)
      6 esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation
      7 features: [default-parameters, generators]
      8 flags: [generated]
      9 info: |
     10    GeneratorMethod :
     11        * PropertyName ( StrictFormalParameters ) { GeneratorBody }
     12 
     13    1. Let propKey be the result of evaluating PropertyName.
     14    2. ReturnIfAbrupt(propKey).
     15    3. If the function code for this GeneratorMethod is strict mode code,
     16       let strict be true. Otherwise let strict be false.
     17    4. Let scope be the running execution context's LexicalEnvironment.
     18    5. Let closure be GeneratorFunctionCreate(Method,
     19       StrictFormalParameters, GeneratorBody, 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 
     46    14.1.19 Runtime Semantics: IteratorBindingInitialization
     47 
     48    FormalsList : FormalsList , FormalParameter
     49 
     50    1. Let status be the result of performing IteratorBindingInitialization for
     51       FormalsList using iteratorRecord and environment as the arguments.
     52    2. ReturnIfAbrupt(status).
     53    3. Return the result of performing IteratorBindingInitialization for
     54       FormalParameter using iteratorRecord and environment as the arguments.
     55 
     56 ---*/
     57 var x = 0;
     58 
     59 var callCount = 0;
     60 var obj = {
     61  *method(x = y, y) {
     62    
     63    callCount = callCount + 1;
     64  }
     65 };
     66 
     67 assert.throws(ReferenceError, function() {
     68  obj.method();
     69 });
     70 assert.sameValue(callCount, 0, 'generator method body not evaluated');
     71 
     72 reportCompare(0, 0);