Struct rustc_query_system::query::caches::SingleCache

pub struct SingleCache<V> {
    cache: OnceLock<(V, DepNodeIndex)>,
}

Fields

cache: OnceLock<(V, DepNodeIndex)>

Trait Implementations

impl<V> Default for SingleCache<V>

fn default() -> Self

Returns the “default value” for a type.

impl<V> QueryCache for SingleCache<V>where V: Copy,

type Key = ()

type Value = V

fn lookup(&self, _key: &()) -> Option<(V, DepNodeIndex)>

Checks if the query is already computed and in the cache.

fn complete(&self, _key: (), value: V, index: DepNodeIndex)

fn iter(&self, f: &mut dyn FnMut(&Self::Key, &Self::Value, DepNodeIndex))

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.