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:
|
|
// - src/dstr-binding/ary-init-iter-close.case
|
|
// - src/dstr-binding/default/func-decl.template
|
|
/*---
|
|
description: Iterator is closed when not exhausted by pattern evaluation (function declaration)
|
|
esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
|
|
es6id: 14.1.19
|
|
features: [Symbol.iterator, destructuring-binding]
|
|
flags: [generated]
|
|
info: |
|
|
FunctionDeclaration :
|
|
function BindingIdentifier ( FormalParameters ) { FunctionBody }
|
|
|
|
[...]
|
|
3. Let F be FunctionCreate(Normal, FormalParameters, FunctionBody,
|
|
scope, strict).
|
|
[...]
|
|
|
|
9.2.1 [[Call]] ( thisArgument, argumentsList)
|
|
|
|
[...]
|
|
7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
|
|
[...]
|
|
|
|
9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
|
|
|
|
1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
|
|
[...]
|
|
|
|
9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
|
|
|
|
[...]
|
|
23. Let iteratorRecord be Record {[[iterator]]:
|
|
CreateListIterator(argumentsList), [[done]]: false}.
|
|
24. If hasDuplicates is true, then
|
|
[...]
|
|
25. Else,
|
|
b. Let formalStatus be IteratorBindingInitialization for formals with
|
|
iteratorRecord and env as arguments.
|
|
[...]
|
|
|
|
13.3.3.5 Runtime Semantics: BindingInitialization
|
|
|
|
BindingPattern : ArrayBindingPattern
|
|
|
|
[...]
|
|
4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
|
|
result).
|
|
[...]
|
|
|
|
---*/
|
|
var doneCallCount = 0;
|
|
var iter = {};
|
|
iter[Symbol.iterator] = function() {
|
|
return {
|
|
next: function() {
|
|
return { value: null, done: false };
|
|
},
|
|
return: function() {
|
|
doneCallCount += 1;
|
|
return {};
|
|
}
|
|
};
|
|
};
|
|
|
|
var callCount = 0;
|
|
function f([x]) {
|
|
assert.sameValue(doneCallCount, 1);
|
|
callCount = callCount + 1;
|
|
};
|
|
f(iter);
|
|
assert.sameValue(callCount, 1, 'function invoked exactly once');
|