mirror of https://github.com/tc39/test262.git
54 lines
2.1 KiB
JavaScript
54 lines
2.1 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
description: >
|
|
Imported binding reflects state of exported default binding ("anonymous"
|
|
generator function declaration)
|
|
esid: sec-moduledeclarationinstantiation
|
|
info: |
|
|
[...]
|
|
17. For each element d in lexDeclarations do
|
|
a. For each element dn of the BoundNames of d do
|
|
i. If IsConstantDeclaration of d is true, then
|
|
[...]
|
|
ii. Else,
|
|
1. Perform ! envRec.CreateMutableBinding(dn, false).
|
|
iii. If d is a GeneratorDeclaration production or a
|
|
FunctionDeclaration production, then
|
|
1. Let fo be the result of performing InstantiateFunctionObject
|
|
for d with argument env.
|
|
2. Call envRec.InitializeBinding(dn, fo).
|
|
[...]
|
|
|
|
14.4.12 Runtime Semantics: InstantiateFunctionObject
|
|
|
|
GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }
|
|
|
|
1. If the function code for GeneratorDeclaration is strict mode code, let
|
|
strict be true. Otherwise let strict be false.
|
|
2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
|
|
GeneratorBody, scope, strict).
|
|
3. Let prototype be ObjectCreate(%GeneratorPrototype%).
|
|
4. Perform DefinePropertyOrThrow(F, "prototype",
|
|
PropertyDescriptor{[[Value]]: prototype, [[Writable]]: true,
|
|
[[Enumerable]]: false, [[Configurable]]: false}).
|
|
5. Perform SetFunctionName(F, "default").
|
|
6. Return F.
|
|
|
|
14.4 Generator Function Definitions
|
|
|
|
Syntax
|
|
|
|
GeneratorDeclaration[Yield, Default] :
|
|
function * BindingIdentifier[?Yield] ( FormalParameters[Yield] ) { GeneratorBody }
|
|
[+Default] function * ( FormalParameters[Yield] ) { GeneratorBody }
|
|
flags: [module]
|
|
features: [generators]
|
|
---*/
|
|
|
|
assert.sameValue(g().next().value, 23, 'generator function value is hoisted');
|
|
assert.sameValue(g.name, 'default', 'correct name is assigned');
|
|
|
|
import g from './instn-named-bndng-dflt-gen-anon.js';
|
|
export default function* () { return 23; };
|