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#[allow(dead_code)]
pub mod channel {
#[cfg(feature = "crossbeam-channel")]
mod inner {
pub type Tx<T> = crossbeam_channel::Sender<T>;
pub type Rx<T> = crossbeam_channel::Receiver<T>;
pub use crossbeam_channel::SendError;
}
#[cfg(not(feature = "crossbeam-channel"))]
mod inner {
pub type Tx<T> = std::sync::mpsc::Sender<T>;
pub type Rx<T> = std::sync::mpsc::Receiver<T>;
pub use std::sync::mpsc::SendError;
}
pub use inner::*;
#[cfg(feature = "crossbeam-channel")]
pub fn channel<T>() -> (Tx<T>, Rx<T>) {
crossbeam_channel::unbounded()
}
#[cfg(not(feature = "crossbeam-channel"))]
pub fn channel<T>() -> (Tx<T>, Rx<T>) {
std::sync::mpsc::channel()
}
}
use channel::*;
use std::io::{Error, ErrorKind, Write};
pub type SyncWriter = crate::Encoder<SyncMpscWriter>;
pub struct SyncMpscWriter {
tx: Tx<Vec<u8>>,
buf: Vec<u8>,
}
impl std::fmt::Debug for SyncMpscWriter {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("SyncMpscWriter").finish()
}
}
impl Clone for SyncMpscWriter {
fn clone(&self) -> Self {
Self {
tx: self.tx.clone(),
buf: Vec::new(),
}
}
}
impl SyncMpscWriter {
pub fn new(tx: Tx<Vec<u8>>) -> Self {
Self {
tx,
buf: Vec::new(),
}
}
}
impl Write for SyncMpscWriter {
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
self.buf.extend_from_slice(buf);
Ok(buf.len())
}
fn flush(&mut self) -> std::io::Result<()> {
self.tx
.send(std::mem::take(&mut self.buf))
.map_err(|_| Error::new(ErrorKind::UnexpectedEof, "cannot write, other half dropped"))
}
}