mirror of https://github.com/tc39/test262.git
36 lines
1.0 KiB
JavaScript
36 lines
1.0 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.
|
|
/*---
|
|
esid: sec-generatorfunction
|
|
es6id: 25.2.1.1
|
|
description: Definition of instance `length` property
|
|
info: |
|
|
[...]
|
|
3. Return CreateDynamicFunction(C, NewTarget, "generator", args).
|
|
|
|
19.2.1.1.1 Runtime Semantics: CreateDynamicFunction
|
|
|
|
[...]
|
|
20. If kind is "generator", then
|
|
a. If parameters Contains YieldExpression is true, throw a SyntaxError
|
|
exception.
|
|
features: [generators]
|
|
---*/
|
|
|
|
var GeneratorFunction = Object.getPrototypeOf(function* () {}).constructor;
|
|
|
|
// YieldExpression is permitted in function body.
|
|
GeneratorFunction('x = yield');
|
|
|
|
assert.throws(SyntaxError, function() {
|
|
GeneratorFunction('x = yield', '');
|
|
}, 'YieldExpression not permitted generally');
|
|
|
|
var withinGenerator = function*() {
|
|
GeneratorFunction('x = yield', '');
|
|
};
|
|
|
|
assert.throws(SyntaxError, function() {
|
|
withinGenerator().next();
|
|
}, 'YieldExpression not permitted when calling context is a generator');
|