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26 lines
721 B
Rust
26 lines
721 B
Rust
use std::io;
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use bytes::BufMut;
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/// An `io::Write`r that only requires mutable reference and assumes that there is space available
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/// in the buffer for every write operation or that it can be extended implicitly (like
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/// `bytes::BytesMut`, for example).
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///
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/// This is slightly faster (~10%) than `bytes::buf::Writer` in such cases because it does not
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/// perform a remaining length check before writing.
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pub(crate) struct MutWriter<'a, B>(pub(crate) &'a mut B);
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impl<'a, B> io::Write for MutWriter<'a, B>
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where
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B: BufMut,
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{
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fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
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self.0.put_slice(buf);
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Ok(buf.len())
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}
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fn flush(&mut self) -> io::Result<()> {
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Ok(())
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}
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}
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