54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
// Copyright 2016 chacha20-poly1305-aead Developers
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//
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// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
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// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
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// http://opensource.org/licenses/MIT>, at your option. This file may not be
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// copied, modified, or distributed except according to those terms.
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use std::mem;
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use std::slice;
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#[allow(clippy::missing_safety_doc)]
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pub unsafe trait Safe {}
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pub trait AsBytes {
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fn as_bytes(&self) -> &[u8];
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fn as_mut_bytes(&mut self) -> &mut [u8];
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}
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impl<T: Safe> AsBytes for [T] {
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#[inline]
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fn as_bytes(&self) -> &[u8] {
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unsafe {
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#[allow(clippy::manual_slice_size_calculation)]
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slice::from_raw_parts(self.as_ptr() as *const u8,
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self.len() * mem::size_of::<T>())
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}
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}
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#[inline]
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fn as_mut_bytes(&mut self) -> &mut [u8] {
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unsafe {
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#[allow(clippy::manual_slice_size_calculation)]
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slice::from_raw_parts_mut(self.as_mut_ptr() as *mut u8,
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self.len() * mem::size_of::<T>())
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}
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}
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}
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unsafe impl Safe for u8 {}
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unsafe impl Safe for u16 {}
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unsafe impl Safe for u32 {}
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unsafe impl Safe for u64 {}
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unsafe impl Safe for i8 {}
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unsafe impl Safe for i16 {}
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unsafe impl Safe for i32 {}
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unsafe impl Safe for i64 {}
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