mirror of https://github.com/tc39/test262.git
73 lines
1.9 KiB
JavaScript
73 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-init-iter-no-close.case
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// - src/dstr-binding/default/func-decl.template
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/*---
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description: Iterator is not closed when exhausted by pattern evaluation (function declaration)
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esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
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es6id: 14.1.19
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features: [Symbol.iterator, destructuring-binding]
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flags: [generated]
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info: |
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FunctionDeclaration :
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function BindingIdentifier ( FormalParameters ) { FunctionBody }
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[...]
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3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
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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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13.3.3.5 Runtime Semantics: BindingInitialization
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BindingPattern : ArrayBindingPattern
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[...]
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4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
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result).
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[...]
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---*/
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var doneCallCount = 0;
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var iter = {};
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iter[Symbol.iterator] = function() {
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return {
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next: function() {
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return { value: null, done: true };
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},
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return: function() {
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doneCallCount += 1;
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return {};
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}
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};
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};
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var callCount = 0;
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function f([x]) {
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assert.sameValue(doneCallCount, 0);
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callCount = callCount + 1;
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};
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f(iter);
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assert.sameValue(callCount, 1, 'function invoked exactly once');
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