Sha256: 90c0055b9b3ec46079fbb7068d17f3ba38eb5ad8a52834b32bf82a73ff52e269
Contents?: true
Size: 1.46 KB
Versions: 8
Compression:
Stored size: 1.46 KB
Contents
use crate::{Error, ErrorKind, ErrorType, SliceWriteError, Write};
use core::mem;
impl Error for SliceWriteError {
fn kind(&self) -> ErrorKind {
match self {
SliceWriteError::Full => ErrorKind::WriteZero,
}
}
}
impl ErrorType for &mut [u8] {
type Error = SliceWriteError;
}
impl core::fmt::Display for SliceWriteError {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
write!(f, "{self:?}")
}
}
#[cfg(feature = "std")]
#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
impl std::error::Error for SliceWriteError {}
/// Write is implemented for `&mut [u8]` by copying into the slice, overwriting
/// its data.
///
/// Note that writing updates the slice to point to the yet unwritten part.
/// The slice will be empty when it has been completely overwritten.
///
/// If the number of bytes to be written exceeds the size of the slice, write operations will
/// return short writes: ultimately, a `SliceWriteError::Full`.
impl Write for &mut [u8] {
#[inline]
fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
let amt = core::cmp::min(buf.len(), self.len());
if !buf.is_empty() && amt == 0 {
return Err(SliceWriteError::Full);
}
let (a, b) = mem::take(self).split_at_mut(amt);
a.copy_from_slice(&buf[..amt]);
*self = b;
Ok(amt)
}
#[inline]
fn flush(&mut self) -> Result<(), Self::Error> {
Ok(())
}
}
Version data entries
8 entries across 8 versions & 1 rubygems