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use core::ops::{Deref, DerefMut};
use core::str::FromStr;
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum Endian {
Little,
Big,
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ParseEndianError {}
impl Endian {
pub const fn new() -> Self {
#[cfg(target_endian = "little")]
let endian = Endian::Little;
#[cfg(target_endian = "big")]
let endian = Endian::Big;
endian
}
pub fn is_le(self) -> bool {
self == Endian::Little
}
pub fn is_be(self) -> bool {
self == Endian::Big
}
}
impl Default for Endian {
fn default() -> Self {
Self::new()
}
}
impl FromStr for Endian {
type Err = ParseEndianError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"little" => Ok(Endian::Little),
"big" => Ok(Endian::Big),
_ => Err(ParseEndianError {}),
}
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
pub struct Count(pub usize);
impl Into<usize> for Count {
fn into(self) -> usize {
self.0
}
}
impl From<usize> for Count {
fn from(n: usize) -> Self {
Self(n)
}
}
impl Deref for Count {
type Target = usize;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for Count {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
pub struct BitSize(pub usize);
impl BitSize {
pub fn with_byte_size(byte_size: usize) -> Self {
Self(byte_size.checked_mul(8).expect("bit size overflow"))
}
pub fn of<T>() -> Self {
Self::with_byte_size(core::mem::size_of::<T>())
}
pub fn of_val<T: ?Sized>(val: &T) -> Self {
Self::with_byte_size(core::mem::size_of_val(val))
}
}
impl Into<usize> for BitSize {
fn into(self) -> usize {
self.0
}
}
impl From<usize> for BitSize {
fn from(n: usize) -> Self {
Self(n)
}
}
impl Deref for BitSize {
type Target = usize;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for BitSize {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}