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use crate::transport::{Transport, TransportError, ListenerEvent};
use crate::Multiaddr;
use std::{fmt, io, marker::PhantomData};
pub struct DummyTransport<TOut = DummyStream>(PhantomData<TOut>);
impl<TOut> DummyTransport<TOut> {
pub fn new() -> Self {
DummyTransport(PhantomData)
}
}
impl<TOut> Default for DummyTransport<TOut> {
fn default() -> Self {
DummyTransport::new()
}
}
impl<TOut> fmt::Debug for DummyTransport<TOut> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "DummyTransport")
}
}
impl<TOut> Clone for DummyTransport<TOut> {
fn clone(&self) -> Self {
DummyTransport(PhantomData)
}
}
impl<TOut> Transport for DummyTransport<TOut> {
type Output = TOut;
type Error = io::Error;
type Listener = futures::stream::Empty<ListenerEvent<Self::ListenerUpgrade>, io::Error>;
type ListenerUpgrade = futures::future::Empty<Self::Output, io::Error>;
type Dial = futures::future::Empty<Self::Output, io::Error>;
fn listen_on(self, addr: Multiaddr) -> Result<Self::Listener, TransportError<Self::Error>> {
Err(TransportError::MultiaddrNotSupported(addr))
}
fn dial(self, addr: Multiaddr) -> Result<Self::Dial, TransportError<Self::Error>> {
Err(TransportError::MultiaddrNotSupported(addr))
}
}
pub struct DummyStream(());
impl fmt::Debug for DummyStream {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "DummyStream")
}
}
impl io::Read for DummyStream {
fn read(&mut self, _: &mut [u8]) -> io::Result<usize> {
Err(io::ErrorKind::Other.into())
}
}
impl io::Write for DummyStream {
fn write(&mut self, _: &[u8]) -> io::Result<usize> {
Err(io::ErrorKind::Other.into())
}
fn flush(&mut self) -> io::Result<()> {
Err(io::ErrorKind::Other.into())
}
}
impl tokio_io::AsyncRead for DummyStream {
unsafe fn prepare_uninitialized_buffer(&self, _: &mut [u8]) -> bool {
false
}
}
impl tokio_io::AsyncWrite for DummyStream {
fn shutdown(&mut self) -> futures::Poll<(), io::Error> {
Err(io::ErrorKind::Other.into())
}
}