mirror of https://github.com/tc39/test262.git
57 lines
1.9 KiB
JavaScript
57 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elem-id-init-hole.case
|
|
// - src/dstr-binding/default/gen-func-decl.template
|
|
/*---
|
|
description: Destructuring initializer with a "hole" (generator function declaration)
|
|
esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
|
|
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
|
|
SingleNameBinding : BindingIdentifier Initializeropt
|
|
[...] 6. If Initializer is present and v is undefined, then
|
|
a. Let defaultValue be the result of evaluating Initializer.
|
|
b. Let v be GetValue(defaultValue).
|
|
[...]
|
|
7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v).
|
|
---*/
|
|
|
|
var callCount = 0;
|
|
function* f([x = 23]) {
|
|
assert.sameValue(x, 23);
|
|
// another statement
|
|
callCount = callCount + 1;
|
|
};
|
|
f([,]).next();
|
|
assert.sameValue(callCount, 1, 'generator function invoked exactly once');
|