tor-browser

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

dflt-params-arg-val-not-undefined.js (2831B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/function-forms/dflt-params-arg-val-not-undefined.case
      3 // - src/function-forms/default/func-expr.template
      4 /*---
      5 description: Use of initializer when argument value is not `undefined` (function expression)
      6 esid: sec-function-definitions-runtime-semantics-evaluation
      7 features: [default-parameters]
      8 flags: [generated]
      9 info: |
     10    FunctionExpression : function ( FormalParameters ) { FunctionBody }
     11 
     12        [...]
     13        3. Let closure be FunctionCreate(Normal, FormalParameters, FunctionBody,
     14           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    14.1.19 Runtime Semantics: IteratorBindingInitialization
     41 
     42    FormalsList : FormalsList , FormalParameter
     43 
     44    [...]
     45    23. Let iteratorRecord be Record {[[Iterator]]:
     46        CreateListIterator(argumentsList), [[Done]]: false}.
     47    24. If hasDuplicates is true, then
     48        [...]
     49    25. Else,
     50        a. Perform ? IteratorBindingInitialization for formals with
     51           iteratorRecord and env as arguments.
     52    [...]
     53 
     54 ---*/
     55 var obj = {};
     56 var falseCount = 0;
     57 var stringCount = 0;
     58 var nanCount = 0;
     59 var zeroCount = 0;
     60 var nullCount = 0;
     61 var objCount = 0;
     62 
     63 var callCount = 0;
     64 // Stores a reference `ref` for case evaluation
     65 var ref;
     66 ref = function(aFalse = falseCount +=1, aString = stringCount += 1, aNaN = nanCount += 1, a0 = zeroCount += 1, aNull = nullCount += 1, aObj = objCount +=1) {
     67  assert.sameValue(aFalse, false);
     68  assert.sameValue(aString, '');
     69  assert.sameValue(aNaN, NaN);
     70  assert.sameValue(a0, 0);
     71  assert.sameValue(aNull, null);
     72  assert.sameValue(aObj, obj);
     73  callCount = callCount + 1;
     74 };
     75 
     76 ref(false, '', NaN, 0, null, obj);
     77 
     78 assert.sameValue(callCount, 1, 'function invoked exactly once');
     79 
     80 assert.sameValue(falseCount, 0, 'initializer not evaluated: false');
     81 assert.sameValue(stringCount, 0, 'initializer not evaluated: string');
     82 assert.sameValue(nanCount, 0, 'initializer not evaluated: NaN');
     83 assert.sameValue(zeroCount, 0, 'initializer not evaluated: 0');
     84 assert.sameValue(nullCount, 0, 'initializer not evaluated: null');
     85 assert.sameValue(objCount, 0, 'initializer not evaluated: object');
     86 
     87 reportCompare(0, 0);