diff options
Diffstat (limited to 'engine/src/stackvec.rs')
| -rw-r--r-- | engine/src/stackvec.rs | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/engine/src/stackvec.rs b/engine/src/stackvec.rs deleted file mode 100644 index cfdef2b..0000000 --- a/engine/src/stackvec.rs +++ /dev/null @@ -1,64 +0,0 @@ -use std::mem::MaybeUninit; -use std::ops::{Deref, DerefMut}; - -pub struct StackVec<T, const CAPACITY: usize> { - values: [MaybeUninit<T>; CAPACITY], - len: usize, -} - -impl<T, const CAPACITY: usize> Deref for StackVec<T, CAPACITY> { - type Target = [T]; - - fn deref(&self) -> &Self::Target { - self.as_slice() - } -} - -impl<T, const CAPACITY: usize> DerefMut for StackVec<T, CAPACITY> { - fn deref_mut(&mut self) -> &mut Self::Target { - self.as_mut_slice() - } -} - -impl<T, const CAPACITY: usize> FromIterator<T> for StackVec<T, CAPACITY> { - fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self { - let mut this = Self::new(); - for item in iter { - this.push(item); - } - - this - } -} - -impl<T, const CAPACITY: usize> StackVec<T, CAPACITY> { - pub fn new() -> Self { - Self { - values: MaybeUninit::uninit_array(), - len: 0, - } - } - - pub fn len(&self) -> usize { - self.len - } - - pub fn is_empty(&self) -> bool { - self.len == 0 - } - - pub fn as_slice(&self) -> &[T] { - // safety: the first `len` elements are guaranteed to be initialized - unsafe { MaybeUninit::slice_assume_init_ref(&self.values[..self.len]) } - } - - pub fn as_mut_slice(&mut self) -> &mut [T] { - // safety: the first `len` elements are guaranteed to be initialized - unsafe { MaybeUninit::slice_assume_init_mut(&mut self.values[..self.len]) } - } - - pub fn push(&mut self, value: T) { - self.values[self.len].write(value); - self.len += 1; - } -} |
