Enum salsa_2022::runtime::local_state::QueryOrigin

pub enum QueryOrigin {
    Assigned(DatabaseKeyIndex),
    BaseInput,
    Derived(QueryEdges),
    DerivedUntracked(QueryEdges),
}

Tracks the way that a memoized value for a query was created.

Variants

Assigned(DatabaseKeyIndex)

The value was assigned as the output of another query (e.g., using specify). The DatabaseKeyIndex is the identity of the assigning query.

BaseInput

This value was set as a base input to the computation.

Derived(QueryEdges)

The value was derived by executing a function and we were able to track ALL of that function’s inputs. Those inputs are described in QueryEdges.

DerivedUntracked(QueryEdges)

The value was derived by executing a function but that function also reported that it read untracked inputs. The QueryEdges argument contains a listing of all the inputs we saw (but we know there were more).

Trait Implementations

impl Clone for QueryOrigin

fn clone(&self) -> QueryOrigin

Returns a copy of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryOrigin

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.