mirror of https://github.com/tc39/test262.git
71 lines
2.0 KiB
JavaScript
71 lines
2.0 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case
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// - src/dstr-binding/default/arrow-function.template
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/*---
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description: BindingElement with array binding pattern and initializer is used (arrow function expression)
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esid: sec-arrow-function-definitions-runtime-semantics-evaluation
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es6id: 14.2.16
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features: [generators, destructuring-binding]
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flags: [generated]
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info: |
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ArrowFunction : ArrowParameters => ConciseBody
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[...]
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4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
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[...]
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9.2.1 [[Call]] ( thisArgument, argumentsList)
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[...]
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7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
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[...]
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9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
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1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
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[...]
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9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
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[...]
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23. Let iteratorRecord be Record {[[iterator]]:
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CreateListIterator(argumentsList), [[done]]: false}.
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24. If hasDuplicates is true, then
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[...]
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25. Else,
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b. Let formalStatus be IteratorBindingInitialization for formals with
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iteratorRecord and env as arguments.
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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BindingElement : BindingPatternInitializer opt
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[...]
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2. If iteratorRecord.[[done]] is true, let v be undefined.
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3. If Initializer is present and v is undefined, then
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a. Let defaultValue be the result of evaluating Initializer.
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b. Let v be ? GetValue(defaultValue).
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4. Return the result of performing BindingInitialization of BindingPattern
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with v and environment as the arguments.
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---*/
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var first = 0;
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var second = 0;
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function* g() {
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first += 1;
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yield;
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second += 1;
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};
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var callCount = 0;
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var f;
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f = ([[,] = g()]) => {
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assert.sameValue(first, 1);
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assert.sameValue(second, 0);
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callCount = callCount + 1;
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};
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f([]);
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assert.sameValue(callCount, 1, 'arrow function invoked exactly once');
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