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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
macro_rules! decoder {
($(#[$attr:meta])* $name:ident<$inner:ident> $({ $($inherent_methods:tt)* })*) => {
pin_project_lite::pin_project! {
$(#[$attr])*
///
/// This structure implements an [`AsyncRead`](tokio::io::AsyncRead) interface and will
/// read compressed data from an underlying stream and emit a stream of uncompressed data.
#[derive(Debug)]
pub struct $name<$inner> {
#[pin]
inner: crate::tokio::bufread::Decoder<$inner, crate::codecs::$name>,
}
}
impl<$inner: tokio::io::AsyncBufRead> $name<$inner> {
/// Creates a new decoder which will read compressed data from the given stream and
/// emit an uncompressed stream.
pub fn new(read: $inner) -> $name<$inner> {
$name {
inner: crate::tokio::bufread::Decoder::new(read, crate::codecs::$name::new()),
}
}
/// Creates a new decoder with the given codec, which will read compressed data from the given stream and
/// emit an uncompressed stream.
pub fn with_codec(read: $inner, codec: crate::codecs::$name) -> $name<$inner> {
$name {
inner: crate::tokio::bufread::Decoder::new(read, codec)
}
}
$($($inherent_methods)*)*
}
impl<$inner> $name<$inner> {
/// Configure multi-member/frame decoding, if enabled this will reset the decoder state
/// when reaching the end of a compressed member/frame and expect either EOF or another
/// compressed member/frame to follow it in the stream.
pub fn multiple_members(&mut self, enabled: bool) {
self.inner.multiple_members(enabled);
}
/// Acquires a reference to the underlying reader that this decoder is wrapping.
pub fn get_ref(&self) -> &$inner {
self.inner.get_ref()
}
/// Acquires a mutable reference to the underlying reader that this decoder is
/// wrapping.
///
/// Note that care must be taken to avoid tampering with the state of the reader which
/// may otherwise confuse this decoder.
pub fn get_mut(&mut self) -> &mut $inner {
self.inner.get_mut()
}
/// Acquires a pinned mutable reference to the underlying reader that this decoder is
/// wrapping.
///
/// Note that care must be taken to avoid tampering with the state of the reader which
/// may otherwise confuse this decoder.
pub fn get_pin_mut(self: std::pin::Pin<&mut Self>) -> std::pin::Pin<&mut $inner> {
self.project().inner.get_pin_mut()
}
/// Consumes this decoder returning the underlying reader.
///
/// Note that this may discard internal state of this decoder, so care should be taken
/// to avoid losing resources when this is called.
pub fn into_inner(self) -> $inner {
self.inner.into_inner()
}
}
impl<$inner: tokio::io::AsyncBufRead> tokio::io::AsyncRead for $name<$inner> {
fn poll_read(
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
buf: &mut tokio::io::ReadBuf<'_>,
) -> std::task::Poll<std::io::Result<()>> {
self.project().inner.poll_read(cx, buf)
}
}
impl<$inner: tokio::io::AsyncWrite> tokio::io::AsyncWrite for $name<$inner> {
fn poll_write(
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
buf: &[u8],
) -> std::task::Poll<std::io::Result<usize>> {
self.get_pin_mut().poll_write(cx, buf)
}
fn poll_flush(
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> std::task::Poll<std::io::Result<()>> {
self.get_pin_mut().poll_flush(cx)
}
fn poll_shutdown(
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
) -> std::task::Poll<std::io::Result<()>> {
self.get_pin_mut().poll_shutdown(cx)
}
fn poll_write_vectored(
self: std::pin::Pin<&mut Self>,
cx: &mut std::task::Context<'_>,
bufs: &[std::io::IoSlice<'_>],
) -> std::task::Poll<std::io::Result<usize>> {
self.get_pin_mut().poll_write_vectored(cx, bufs)
}
fn is_write_vectored(&self) -> bool {
self.get_ref().is_write_vectored()
}
}
const _: () = {
use crate::core::util::{_assert_send, _assert_sync};
use core::pin::Pin;
use tokio::io::AsyncBufRead;
_assert_send::<$name<Pin<Box<dyn AsyncBufRead + Send>>>>();
_assert_sync::<$name<Pin<Box<dyn AsyncBufRead + Sync>>>>();
};
}
}