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use super::*;
use tokio::io::{AsyncRead, AsyncWrite};
use tcp::Tcp;
impl<R: AsyncRead + AsyncWrite, H: Handler> Connection<R, H> {
pub fn wait<F: Fn(&Connection<R, H>) -> bool>(self, f: F) -> Wait<R, H, F> {
Wait {
connection: Some(self),
condition: f,
first_round: true,
}
}
pub fn wait_flush(self) -> WaitFlush<R, H> {
WaitFlush {
connection: Some(self),
first_round: true,
}
}
}
pub struct Wait<R: AsyncRead + AsyncWrite, H: Handler, F> {
connection: Option<Connection<R, H>>,
condition: F,
first_round: bool,
}
impl<R: AsyncRead + AsyncWrite + Tcp, H: Handler, F: Fn(&Connection<R, H>) -> bool> Future
for Wait<R, H, F> {
type Item = Connection<R, H>;
type Error = HandlerError<H::Error>;
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
if self.first_round {
if let Some(ref mut c) = self.connection {
c.abort_read()?
}
self.first_round = false
}
loop {
debug!("wait loop");
if let Some(mut connection) = self.connection.take() {
if connection.handler.is_some() && (self.condition)(&connection) &&
connection.is_reading()
{
return Ok(Async::Ready(connection));
} else {
match try!(connection.atomic_poll()) {
Async::Ready(Status::Ok) => {
self.connection = Some(connection);
}
Async::Ready(Status::Disconnect) => return Ok(Async::Ready(connection)),
Async::NotReady => {
self.connection = Some(connection);
return Ok(Async::NotReady);
}
}
}
}
}
}
}
pub struct WaitFlush<R: AsyncRead + AsyncWrite, H: Handler> {
connection: Option<Connection<R, H>>,
first_round: bool,
}
impl<R: AsyncRead + AsyncWrite + Tcp, H: Handler> Future for WaitFlush<R, H> {
type Item = Connection<R, H>;
type Error = HandlerError<H::Error>;
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
if self.first_round {
if let Some(ref mut c) = self.connection {
c.abort_read()?
}
self.first_round = false
}
loop {
debug!("WaitFlush loop");
if let Some(mut c) = self.connection.take() {
match try!(c.atomic_poll()) {
Async::Ready(Status::Disconnect) => return Ok(Async::Ready(c)),
Async::NotReady => {
self.connection = Some(c);
return Ok(Async::NotReady);
}
Async::Ready(Status::Ok) => {
match c.state {
Some(ConnectionState::Read(_)) => return Ok(Async::Ready(c)),
_ => self.connection = Some(c),
}
}
}
} else {
unreachable!()
}
}
}
}