private void YieldNext()
{
if (this.State != GeneratorState.Closed)
{
try {
this.State = GeneratorState.Running;
if (TryYieldNext(out EcmaValue result))
{
Promise.Resolve(result, ResolveFromYield, RejectFromYield);
return;
}
} catch (GeneratorClosedException ex) {
Resolve(ex.ReturnValue, true);
} catch (Exception ex) {
Reject(EcmaValueUtility.GetValueFromException(ex));
}
if (this.State != GeneratorState.AwaitingReturn)
{
Close();
}
}
}
private void AwaitReturn(EcmaValue value, bool resume)
{
this.State = GeneratorState.AwaitingReturn;
Promise.Resolve(value, resume ? (PromiseCallback)ResumeFromReturn : ResolveFromReturn, RejectFromYield);
}