async_compression/
util.rs

1pub fn _assert_send<T: Send>() {}
2pub fn _assert_sync<T: Sync>() {}
3
4#[derive(Debug, Default)]
5pub struct PartialBuffer<B: AsRef<[u8]>> {
6    buffer: B,
7    index: usize,
8}
9
10impl<B: AsRef<[u8]>> PartialBuffer<B> {
11    pub(crate) fn new(buffer: B) -> Self {
12        Self { buffer, index: 0 }
13    }
14
15    pub(crate) fn written(&self) -> &[u8] {
16        &self.buffer.as_ref()[..self.index]
17    }
18
19    pub(crate) fn unwritten(&self) -> &[u8] {
20        &self.buffer.as_ref()[self.index..]
21    }
22
23    pub(crate) fn advance(&mut self, amount: usize) {
24        self.index += amount;
25    }
26
27    pub(crate) fn get_mut(&mut self) -> &mut B {
28        &mut self.buffer
29    }
30
31    pub(crate) fn into_inner(self) -> B {
32        self.buffer
33    }
34
35    pub(crate) fn reset(&mut self) {
36        self.index = 0;
37    }
38}
39
40impl<B: AsRef<[u8]> + AsMut<[u8]>> PartialBuffer<B> {
41    pub(crate) fn unwritten_mut(&mut self) -> &mut [u8] {
42        &mut self.buffer.as_mut()[self.index..]
43    }
44
45    pub(crate) fn copy_unwritten_from<C: AsRef<[u8]>>(
46        &mut self,
47        other: &mut PartialBuffer<C>,
48    ) -> usize {
49        let len = std::cmp::min(self.unwritten().len(), other.unwritten().len());
50
51        self.unwritten_mut()[..len].copy_from_slice(&other.unwritten()[..len]);
52
53        self.advance(len);
54        other.advance(len);
55        len
56    }
57}
58
59impl<B: AsRef<[u8]> + Default> PartialBuffer<B> {
60    pub(crate) fn take(&mut self) -> Self {
61        std::mem::replace(self, Self::new(B::default()))
62    }
63}
64
65impl<B: AsRef<[u8]> + AsMut<[u8]>> From<B> for PartialBuffer<B> {
66    fn from(buffer: B) -> Self {
67        Self::new(buffer)
68    }
69}
async_compression/util.rs

async_compression/
util.rs
