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replace horrible hack with a slightly less horrible one

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This commit is contained in:
Aleksey Kladov
2019-09-27 20:47:36 +03:00
parent 2b69c84396
commit 35f1655b0b
2 changed files with 5 additions and 3 deletions
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5
crates/ra_db/src/lib.rs
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@@ -32,11 +32,10 @@ pub trait CheckCanceled {
fn catch_canceled<F, T>(&self, f: F) -> Result<T, Canceled>
where
Self: Sized,
Self: Sized + panic::RefUnwindSafe,
F: FnOnce(&Self) -> T + panic::UnwindSafe,
{
let this = panic::AssertUnwindSafe(self);
panic::catch_unwind(|| f(*this)).map_err(|err| match err.downcast::<Canceled>() {
panic::catch_unwind(|| f(self)).map_err(|err| match err.downcast::<Canceled>() {
Ok(canceled) => *canceled,
Err(payload) => panic::resume_unwind(payload),
})