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Fix eviction in MonoCache::find_or_create

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This commit is contained in:
Keegan McAllister 2013-10-11 13:44:48 -07:00
parent fc9fdf30a6
commit 5289d35145
1 changed files with 4 additions and 6 deletions
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10
src/components/util/cache.rs
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@ -34,13 +34,13 @@ impl<K: Clone + Eq, V: Clone> Cache<K,V> for MonoCache<K,V> {
}
fn find_or_create(&mut self, key: &K, blk: &fn(&K) -> V) -> V {
match self.entry {
None => {
match self.find(key) {
Some(value) => value,
None => {
let value = blk(key);
self.entry = Some((key.clone(), value.clone()));
value
},
Some((ref _k, ref v)) => v.clone()
}
}
}
@ -58,11 +58,9 @@ fn test_monocache() {
assert!(cache.find(&1).is_some());
assert!(cache.find(&2).is_none());
/* FIXME: clarify behavior here:
cache.find_or_create(&2, |_v| { two });
assert!(cache.find(&2).is_some());
assert!(cache.find(&1).is_none());
*/
}
pub struct HashCache<K, V> {