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// 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');
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