tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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meth-ary-ptrn-rest-ary-empty.js (2197B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-ary-empty.case
      3 // - src/dstr-binding/default/meth.template
      4 /*---
      5 description: Rest element containing an "empty" array pattern (method)
      6 esid: sec-runtime-semantics-definemethod
      7 features: [generators, 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    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     43 
     44    BindingRestElement : ... BindingPattern
     45 
     46    1. Let A be ArrayCreate(0).
     47    [...]
     48    3. Repeat
     49       [...]
     50       b. If iteratorRecord.[[done]] is true, then
     51          i. Return the result of performing BindingInitialization of
     52             BindingPattern with A and environment as the arguments.
     53       [...]
     54 
     55    13.3.3.6 Runtime Semantics: IteratorBindingInitialization
     56 
     57    ArrayBindingPattern : [ ]
     58 
     59    1. Return NormalCompletion(empty).
     60 
     61 ---*/
     62 var iterations = 0;
     63 var iter = function*() {
     64  iterations += 1;
     65 }();
     66 
     67 var callCount = 0;
     68 var obj = {
     69  method([...[]]) {
     70    assert.sameValue(iterations, 1);
     71    callCount = callCount + 1;
     72  }
     73 };
     74 
     75 obj.method(iter);
     76 assert.sameValue(callCount, 1, 'method invoked exactly once');
     77 
     78 reportCompare(0, 0);