tor-browser

The Tor Browser
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gen-meth-ary-ptrn-rest-id-direct.js (2195B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/dstr-binding/ary-ptrn-rest-id-direct.case
      3 // - src/dstr-binding/default/gen-meth.template
      4 /*---
      5 description: Lone rest element (direct binding) (generator method)
      6 esid: sec-generator-function-definitions-runtime-semantics-propertydefinitionevaluation
      7 features: [generators, destructuring-binding]
      8 flags: [generated]
      9 includes: [compareArray.js]
     10 info: |
     11    GeneratorMethod :
     12        * PropertyName ( StrictFormalParameters ) { GeneratorBody }
     13 
     14    1. Let propKey be the result of evaluating PropertyName.
     15    2. ReturnIfAbrupt(propKey).
     16    3. If the function code for this GeneratorMethod is strict mode code,
     17       let strict be true. Otherwise let strict be false.
     18    4. Let scope be the running execution context's LexicalEnvironment.
     19    5. Let closure be GeneratorFunctionCreate(Method,
     20       StrictFormalParameters, GeneratorBody, scope, strict).
     21    [...]
     22 
     23    9.2.1 [[Call]] ( thisArgument, argumentsList)
     24 
     25    [...]
     26    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
     27    [...]
     28 
     29    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
     30 
     31    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
     32    [...]
     33 
     34    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
     35 
     36    [...]
     37    23. Let iteratorRecord be Record {[[iterator]]:
     38        CreateListIterator(argumentsList), [[done]]: false}.
     39    24. If hasDuplicates is true, then
     40        [...]
     41    25. Else,
     42        b. Let formalStatus be IteratorBindingInitialization for formals with
     43           iteratorRecord and env as arguments.
     44    [...]
     45 
     46    Runtime Semantics: IteratorBindingInitialization
     47 
     48    BindingRestElement : ... BindingIdentifier
     49 
     50    [...]
     51    2. Let A be ! ArrayCreate(0).
     52    3. Let n be 0.
     53    4. Repeat,
     54        [...]
     55        f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue).
     56        g. Set n to n + 1.
     57 
     58 ---*/
     59 
     60 var callCount = 0;
     61 var obj = {
     62  *method([...x]) {
     63    assert(Array.isArray(x));
     64    assert.compareArray(x, [1]);
     65    callCount = callCount + 1;
     66  }
     67 };
     68 
     69 obj.method([1]).next();
     70 assert.sameValue(callCount, 1, 'generator method invoked exactly once');
     71 
     72 reportCompare(0, 0);