tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dflt-params-arg-val-undefined.js (2125B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/function-forms/dflt-params-arg-val-undefined.case
      3 // - src/function-forms/default/func-decl.template
      4 /*---
      5 description: Use of initializer when argument value is `undefined` (function declaration)
      6 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
      7 features: [default-parameters]
      8 flags: [generated]
      9 info: |
     10    FunctionDeclaration :
     11        function BindingIdentifier ( FormalParameters ) { FunctionBody }
     12 
     13        [...]
     14        3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
     15           scope, strict).
     16        [...]
     17 
     18    9.2.1 [[Call]] ( thisArgument, argumentsList)
     19 
     20    [...]
     21    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     22    [...]
     23 
     24    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     25 
     26    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     27    [...]
     28 
     29    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     30 
     31    [...]
     32    23. Let iteratorRecord be Record {[[iterator]]:
     33        CreateListIterator(argumentsList), [[done]]: false}.
     34    24. If hasDuplicates is true, then
     35        [...]
     36    25. Else,
     37        b. Let formalStatus be IteratorBindingInitialization for formals with
     38           iteratorRecord and env as arguments.
     39    [...]
     40 
     41    14.1.19 Runtime Semantics: IteratorBindingInitialization
     42 
     43    FormalsList : FormalsList , FormalParameter
     44 
     45    [...]
     46    23. Let iteratorRecord be Record {[[Iterator]]:
     47        CreateListIterator(argumentsList), [[Done]]: false}.
     48    24. If hasDuplicates is true, then
     49        [...]
     50    25. Else,
     51        a. Perform ? IteratorBindingInitialization for formals with
     52           iteratorRecord and env as arguments.
     53    [...]
     54 
     55 ---*/
     56 
     57 var callCount = 0;
     58 // Stores a reference `ref` for case evaluation
     59 function ref(fromLiteral = 23, fromExpr = 45, fromHole = 99) {
     60  assert.sameValue(fromLiteral, 23);
     61  assert.sameValue(fromExpr, 45);
     62  assert.sameValue(fromHole, 99);
     63  callCount = callCount + 1;
     64 }
     65 
     66 ref(undefined, void 0);
     67 
     68 assert.sameValue(callCount, 1, 'function invoked exactly once');
     69 
     70 reportCompare(0, 0);