mirror of https://github.com/tc39/test262.git
67 lines
2.0 KiB
JavaScript
67 lines
2.0 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case
|
|
// - src/dstr-binding/default/gen-func-decl.template
|
|
/*---
|
|
description: BindingElement with array binding pattern and initializer is not used (generator function declaration)
|
|
esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
|
|
es6id: 14.4.12
|
|
features: [generators, destructuring-binding]
|
|
flags: [generated]
|
|
info: |
|
|
GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }
|
|
|
|
[...]
|
|
2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
|
|
GeneratorBody, 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.
|
|
[...]
|
|
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
|
|
|
BindingElement : BindingPatternInitializer opt
|
|
|
|
1. If iteratorRecord.[[done]] is false, then
|
|
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
|
|
[...]
|
|
e. Else,
|
|
i. Let v be IteratorValue(next).
|
|
[...]
|
|
4. Return the result of performing BindingInitialization of BindingPattern
|
|
with v and environment as the arguments.
|
|
|
|
---*/
|
|
var callCount = 0;
|
|
function* g() {
|
|
callCount += 1;
|
|
};
|
|
|
|
var callCount = 0;
|
|
function* f([[,] = g()]) {
|
|
assert.sameValue(callCount, 0);
|
|
callCount = callCount + 1;
|
|
};
|
|
f([[]]).next();
|
|
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
|