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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#![deny(unsafe_code)]
//! A crate to hold very common types in Servo.
//!
//! You should almost never need to add a data type to this crate. Instead look for
//! a more shared crate that has fewer dependents.
pub mod cross_process_instant;
pub mod generic_channel;
pub mod id;
pub mod print_tree;
pub mod text;
mod unicode_block;
use serde::{Deserialize, Serialize};
use webrender_api::Epoch as WebRenderEpoch;
/// A struct for denoting the age of messages; prevents race conditions.
#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
pub struct Epoch(pub u32);
impl Epoch {
pub fn next(&mut self) {
self.0 += 1;
}
}
impl From<Epoch> for WebRenderEpoch {
fn from(val: Epoch) -> Self {
WebRenderEpoch(val.0)
}
}
pub trait WebRenderEpochToU16 {
fn as_u16(&self) -> u16;
}
impl WebRenderEpochToU16 for WebRenderEpoch {
/// The value of this [`Epoch`] as a u16 value. Note that if this Epoch's
/// value is more than u16::MAX, then the return value will be modulo
/// u16::MAX.
fn as_u16(&self) -> u16 {
(self.0 % u16::MAX as u32) as u16
}
}
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