dencode 0.3.0

Utilities for decoding and encoding frames from readers and writers.
Documentation 
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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101

use std::{
    io,
    ops::{Deref, DerefMut},
};

#[cfg_attr(feature = "async", pin_project::pin_project)]
#[derive(Debug)]
pub(crate) struct Fuse<T, U> {
    #[cfg_attr(feature = "async", pin)]
    pub(crate) io: T,
    pub(crate) codec: U,
}

impl<T, U> Fuse<T, U> {
    pub(crate) fn new(t: T, u: U) -> Self {
        Self { io: t, codec: u }
    }
}

impl<T, U> Deref for Fuse<T, U> {
    type Target = T;

    fn deref(&self) -> &T {
        &self.io
    }
}

impl<T, U> DerefMut for Fuse<T, U> {
    fn deref_mut(&mut self) -> &mut T {
        &mut self.io
    }
}

impl<T, U> io::Read for Fuse<T, U>
where
    T: io::Read,
{
    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
        self.io.read(buf)
    }
}

impl<T, U> io::Write for Fuse<T, U>
where
    T: io::Write,
{
    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
        self.io.write(buf)
    }

    fn flush(&mut self) -> io::Result<()> {
        self.io.flush()
    }
}

#[cfg(feature = "async")]
mod if_async {
    use std::{
        marker::Unpin,
        pin::Pin,
        task::{Context, Poll},
    };

    use futures_util::io::{AsyncRead, AsyncWrite};

    use super::*;

    impl<T, U> AsyncRead for Fuse<T, U>
    where
        T: AsyncRead + Unpin,
    {
        fn poll_read(
            self: Pin<&mut Self>,
            cx: &mut Context<'_>,
            buf: &mut [u8],
        ) -> Poll<io::Result<usize>> {
            self.project().io.poll_read(cx, buf)
        }
    }

    impl<T, U> AsyncWrite for Fuse<T, U>
    where
        T: AsyncWrite + Unpin,
    {
        fn poll_write(
            self: Pin<&mut Self>,
            cx: &mut Context<'_>,
            buf: &[u8],
        ) -> Poll<io::Result<usize>> {
            self.project().io.poll_write(cx, buf)
        }

        fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
            self.project().io.poll_flush(cx)
        }

        fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
            self.project().io.poll_close(cx)
        }
    }
}