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Use as_deref in compiler (but only where it makes sense)

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This commit is contained in:
Maybe Waffle 2022-11-16 21:58:58 +00:00
parent e702534763
commit 94470f4efd
27 changed files with 45 additions and 63 deletions
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6
compiler/rustc_interface/src/queries.rs
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@ -33,11 +33,7 @@ pub struct Query<T> {
impl<T> Query<T> {
fn compute<F: FnOnce() -> Result<T>>(&self, f: F) -> Result<&Query<T>> {
let mut result = self.result.borrow_mut();
if result.is_none() {
*result = Some(f());
}
result.as_ref().unwrap().as_ref().map(|_| self).map_err(|err| *err)
self.result.borrow_mut().get_or_insert_with(f).as_ref().map(|_| self).map_err(|&err| err)
}
/// Takes ownership of the query result. Further attempts to take or peek the query