use core::{
cmp::PartialEq,
ops::{BitAnd, BitOr, Not},
};
pub trait Io {
type Value: Copy
+ PartialEq
+ BitAnd<Output = Self::Value>
+ BitOr<Output = Self::Value>
+ Not<Output = Self::Value>;
fn read(&self) -> Self::Value;
fn write(&mut self, value: Self::Value);
#[inline(always)]
fn readf(&self, flags: Self::Value) -> bool {
(self.read() & flags) as Self::Value == flags
}
#[inline(always)]
fn writef(&mut self, flags: Self::Value, value: bool) {
let tmp: Self::Value = match value {
true => self.read() | flags,
false => self.read() & !flags,
};
self.write(tmp);
}
}
pub struct ReadOnly<I> {
inner: I,
}
impl<I> ReadOnly<I> {
pub const fn new(inner: I) -> ReadOnly<I> {
ReadOnly { inner: inner }
}
}
impl<I: Io> ReadOnly<I> {
#[inline(always)]
pub fn read(&self) -> I::Value {
self.inner.read()
}
#[inline(always)]
pub fn readf(&self, flags: I::Value) -> bool {
self.inner.readf(flags)
}
}
pub struct WriteOnly<I> {
inner: I,
}
impl<I> WriteOnly<I> {
pub const fn new(inner: I) -> WriteOnly<I> {
WriteOnly { inner: inner }
}
}
impl<I: Io> WriteOnly<I> {
#[inline(always)]
pub fn write(&mut self, value: I::Value) {
self.inner.write(value)
}
#[inline(always)]
pub fn writef(&mut self, flags: I::Value, value: bool) {
self.inner.writef(flags, value)
}
}