1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
/*!
Higher level communication abstractions.
*/
#![allow(missing_doc)]
use std::comm;
/// An extension of `pipes::stream` that allows both sending and receiving.
pub struct DuplexStream<S, R> {
priv tx: Sender<S>,
priv rx: Receiver<R>,
}
/// Creates a bidirectional stream.
pub fn duplex<S: Send, R: Send>() -> (DuplexStream<S, R>, DuplexStream<R, S>) {
let (tx1, rx1) = channel();
let (tx2, rx2) = channel();
(DuplexStream { tx: tx1, rx: rx2 },
DuplexStream { tx: tx2, rx: rx1 })
}
// Allow these methods to be used without import:
impl<S:Send,R:Send> DuplexStream<S, R> {
pub fn send(&self, x: S) {
self.tx.send(x)
}
pub fn try_send(&self, x: S) -> bool {
self.tx.try_send(x)
}
pub fn recv(&self) -> R {
self.rx.recv()
}
pub fn try_recv(&self) -> comm::TryRecvResult<R> {
self.rx.try_recv()
}
pub fn recv_opt(&self) -> Option<R> {
self.rx.recv_opt()
}
}
#[cfg(test)]
mod test {
use comm::{duplex};
#[test]
pub fn DuplexStream1() {
let (left, right) = duplex();
left.send(~"abc");
right.send(123);
assert!(left.recv() == 123);
assert!(right.recv() == ~"abc");
}
}
|
