File: panic.rs

package info (click to toggle)
rust-git2 0.13.11-2
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye
  • size: 1,076 kB
  • sloc: makefile: 6
file content (33 lines) | stat: -rw-r--r-- 775 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
use std::any::Any;
use std::cell::RefCell;

thread_local!(static LAST_ERROR: RefCell<Option<Box<dyn Any + Send>>> = {
    RefCell::new(None)
});

pub fn wrap<T, F: FnOnce() -> T + std::panic::UnwindSafe>(f: F) -> Option<T> {
    use std::panic;
    if LAST_ERROR.with(|slot| slot.borrow().is_some()) {
        return None;
    }
    match panic::catch_unwind(f) {
        Ok(ret) => Some(ret),
        Err(e) => {
            LAST_ERROR.with(move |slot| {
                *slot.borrow_mut() = Some(e);
            });
            None
        }
    }
}

pub fn check() {
    let err = LAST_ERROR.with(|slot| slot.borrow_mut().take());
    if let Some(err) = err {
        panic!(err)
    }
}

pub fn panicked() -> bool {
    LAST_ERROR.with(|slot| slot.borrow().is_some())
}