tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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dflt-ary-ptrn-rest-id-direct.js (1893B)

      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/func-decl-dflt.template
      4 /*---
      5 description: Lone rest element (direct binding) (function declaration (default parameter))
      6 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
      7 features: [destructuring-binding, default-parameters]
      8 flags: [generated]
      9 includes: [compareArray.js]
     10 info: |
     11    FunctionDeclaration :
     12        function BindingIdentifier ( FormalParameters ) { FunctionBody }
     13 
     14        [...]
     15        3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
     16           scope, strict).
     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    Runtime Semantics: IteratorBindingInitialization
     43 
     44    BindingRestElement : ... BindingIdentifier
     45 
     46    [...]
     47    2. Let A be ! ArrayCreate(0).
     48    3. Let n be 0.
     49    4. Repeat,
     50        [...]
     51        f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue).
     52        g. Set n to n + 1.
     53 
     54 ---*/
     55 
     56 var callCount = 0;
     57 function f([...x] = [1]) {
     58  assert(Array.isArray(x));
     59  assert.compareArray(x, [1]);
     60  callCount = callCount + 1;
     61 };
     62 f();
     63 assert.sameValue(callCount, 1, 'function invoked exactly once');
     64 
     65 reportCompare(0, 0);