mirror of
https://github.com/servo/servo.git
synced 2025-10-12 06:20:26 +01:00
648ce1e44e
This allows us to get rid of a bunch of lifetimes and simplify a lot of code. It also lets us get rid of that nasty lifetime transmute, which is awesome. The situation with thread-local contexts is still suboptimal, but we fix that in subsequent patches.
27 lines
1 KiB
Rust
27 lines
1 KiB
Rust
/* 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 http://mozilla.org/MPL/2.0/. */
|
|
|
|
use context::{SharedStyleContext, ThreadLocalStyleContext};
|
|
use std::cell::RefCell;
|
|
use std::rc::Rc;
|
|
|
|
thread_local!(static LOCAL_CONTEXT_KEY: RefCell<Option<Rc<ThreadLocalStyleContext>>> = RefCell::new(None));
|
|
|
|
// Keep this implementation in sync with the one in components/layout/context.rs.
|
|
pub fn create_or_get_local_context(shared: &SharedStyleContext) -> Rc<ThreadLocalStyleContext> {
|
|
LOCAL_CONTEXT_KEY.with(|r| {
|
|
let mut r = r.borrow_mut();
|
|
if let Some(context) = r.clone() {
|
|
context
|
|
} else {
|
|
let context = Rc::new(ThreadLocalStyleContext::new(&shared.local_context_creation_data.lock().unwrap()));
|
|
*r = Some(context.clone());
|
|
context
|
|
}
|
|
})
|
|
}
|
|
|
|
pub fn clear_local_context() {
|
|
LOCAL_CONTEXT_KEY.with(|r| *r.borrow_mut() = None);
|
|
}
|