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// Copyright © 2017-2018 Mozilla Foundation
//
// This program is made available under an ISC-style license. See the
// accompanying file LICENSE for details.
use std::ops;
#[repr(C)]
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct CorkState(u32);
const UNCORK: u32 = 0b00;
const CORK: u32 = 0b01;
const NOTIFY: u32 = 0b10;
const ALL: u32 = 0b11;
impl CorkState {
#[inline]
pub fn uncork() -> Self {
CorkState(UNCORK)
}
#[inline]
pub fn cork() -> Self {
CorkState(CORK)
}
#[inline]
pub fn notify() -> Self {
CorkState(NOTIFY)
}
#[inline]
pub fn is_cork(&self) -> bool {
self.contains(CorkState::cork())
}
#[inline]
pub fn is_notify(&self) -> bool {
self.contains(CorkState::notify())
}
#[inline]
pub fn contains(&self, other: Self) -> bool {
(*self & other) == other
}
}
impl ops::BitOr for CorkState {
type Output = CorkState;
#[inline]
fn bitor(self, other: Self) -> Self {
CorkState(self.0 | other.0)
}
}
impl ops::BitXor for CorkState {
type Output = CorkState;
#[inline]
fn bitxor(self, other: Self) -> Self {
CorkState(self.0 ^ other.0)
}
}
impl ops::BitAnd for CorkState {
type Output = CorkState;
#[inline]
fn bitand(self, other: Self) -> Self {
CorkState(self.0 & other.0)
}
}
impl ops::Sub for CorkState {
type Output = CorkState;
#[inline]
fn sub(self, other: Self) -> Self {
CorkState(self.0 & !other.0)
}
}
impl ops::Not for CorkState {
type Output = CorkState;
#[inline]
fn not(self) -> Self {
CorkState(!self.0 & ALL)
}
}