bjoernager/rust
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Use ptr::Alignment for extra coolness points

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This commit is contained in:
Maybe Waffle 2023-04-14 12:29:10 +00:00
parent 36f5918bf1
commit 014c6f208e
8 changed files with 27 additions and 29 deletions
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10
compiler/rustc_data_structures/src/aligned.rs
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@ -1,10 +1,10 @@
use std::mem;
use std::ptr::Alignment;
/// Returns the ABI-required minimum alignment of a type in bytes.
///
/// This is equivalent to [`mem::align_of`], but also works for some unsized
/// types (e.g. slices or rustc's `List`s).
pub const fn align_of<T: ?Sized + Aligned>() -> usize {
pub const fn align_of<T: ?Sized + Aligned>() -> Alignment {
T::ALIGN
}
@ -19,13 +19,13 @@ pub const fn align_of<T: ?Sized + Aligned>() -> usize {
/// [`mem::align_of<Self>()`]: mem::align_of
pub unsafe trait Aligned {
/// Alignment of `Self`.
const ALIGN: usize;
const ALIGN: Alignment;
}
unsafe impl<T> Aligned for T {
const ALIGN: usize = mem::align_of::<Self>();
const ALIGN: Alignment = Alignment::of::<Self>();
}
unsafe impl<T> Aligned for [T] {
const ALIGN: usize = mem::align_of::<T>();
const ALIGN: Alignment = Alignment::of::<T>();
}