tor-browser

The Tor Browser
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meth-obj-ptrn-prop-obj-init.js (2182B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/obj-ptrn-prop-obj-init.case
      3 // - src/dstr-binding/default/meth.template
      4 /*---
      5 description: Object binding pattern with "nested" object binding pattern using initializer (method)
      6 esid: sec-runtime-semantics-definemethod
      7 features: [destructuring-binding]
      8 flags: [generated]
      9 info: |
     10    MethodDefinition : PropertyName ( StrictFormalParameters ) { FunctionBody }
     11 
     12    [...]
     13    6. Let closure be FunctionCreate(kind, StrictFormalParameters,
     14       FunctionBody, scope, strict). If functionPrototype was passed as a
     15       parameter then pass its value as the functionPrototype optional argument
     16       of FunctionCreate.
     17    [...]
     18 
     19    9.2.1 [[Call]] ( thisArgument, argumentsList)
     20 
     21    [...]
     22    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     23    [...]
     24 
     25    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     26 
     27    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     28    [...]
     29 
     30    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     31 
     32    [...]
     33    23. Let iteratorRecord be Record {[[iterator]]:
     34        CreateListIterator(argumentsList), [[done]]: false}.
     35    24. If hasDuplicates is true, then
     36        [...]
     37    25. Else,
     38        b. Let formalStatus be IteratorBindingInitialization for formals with
     39           iteratorRecord and env as arguments.
     40    [...]
     41 
     42    13.3.3.7 Runtime Semantics: KeyedBindingInitialization
     43 
     44    [...]
     45    3. If Initializer is present and v is undefined, then
     46       a. Let defaultValue be the result of evaluating Initializer.
     47       b. Let v be GetValue(defaultValue).
     48       c. ReturnIfAbrupt(v).
     49    4. Return the result of performing BindingInitialization for BindingPattern
     50       passing v and environment as arguments.
     51 ---*/
     52 
     53 var callCount = 0;
     54 var obj = {
     55  method({ w: { x, y, z } = { x: 4, y: 5, z: 6 } }) {
     56    assert.sameValue(x, 4);
     57    assert.sameValue(y, 5);
     58    assert.sameValue(z, 6);
     59 
     60    assert.throws(ReferenceError, function() {
     61      w;
     62    });
     63    callCount = callCount + 1;
     64  }
     65 };
     66 
     67 obj.method({ w: undefined });
     68 assert.sameValue(callCount, 1, 'method invoked exactly once');
     69 
     70 reportCompare(0, 0);