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Add inline tags to UninitSlice methods #443

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Apr 10, 2021
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7 changes: 7 additions & 0 deletions src/buf/uninit_slice.rs
Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ impl UninitSlice {
///
/// let slice = unsafe { UninitSlice::from_raw_parts_mut(ptr, len) };
/// ```
#[inline]
pub unsafe fn from_raw_parts_mut<'a>(ptr: *mut u8, len: usize) -> &'a mut UninitSlice {
let maybe_init: &mut [MaybeUninit<u8>] =
core::slice::from_raw_parts_mut(ptr as *mut _, len);
Expand All @@ -64,6 +65,7 @@ impl UninitSlice {
///
/// assert_eq!(b"boo", &data[..]);
/// ```
#[inline]
pub fn write_byte(&mut self, index: usize, byte: u8) {
assert!(index < self.len());

Expand All @@ -90,6 +92,7 @@ impl UninitSlice {
///
/// assert_eq!(b"bar", &data[..]);
/// ```
#[inline]
pub fn copy_from_slice(&mut self, src: &[u8]) {
use core::ptr;

Expand All @@ -116,6 +119,7 @@ impl UninitSlice {
/// let mut slice = &mut data[..];
/// let ptr = BufMut::bytes_mut(&mut slice).as_mut_ptr();
/// ```
#[inline]
pub fn as_mut_ptr(&mut self) -> *mut u8 {
self.0.as_mut_ptr() as *mut _
}
Expand All @@ -133,6 +137,7 @@ impl UninitSlice {
///
/// assert_eq!(len, 3);
/// ```
#[inline]
pub fn len(&self) -> usize {
self.0.len()
}
Expand All @@ -150,13 +155,15 @@ macro_rules! impl_index {
impl Index<$t> for UninitSlice {
type Output = UninitSlice;

#[inline]
fn index(&self, index: $t) -> &UninitSlice {
let maybe_uninit: &[MaybeUninit<u8>] = &self.0[index];
unsafe { &*(maybe_uninit as *const [MaybeUninit<u8>] as *const UninitSlice) }
}
}

impl IndexMut<$t> for UninitSlice {
#[inline]
fn index_mut(&mut self, index: $t) -> &mut UninitSlice {
let maybe_uninit: &mut [MaybeUninit<u8>] = &mut self.0[index];
unsafe { &mut *(maybe_uninit as *mut [MaybeUninit<u8>] as *mut UninitSlice) }
Expand Down