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66ffae1bb9
We also track whether reset is required at the ingredient level. For tracked struct fields, we were not using `push_mut`, and I think that was an oversight. The plan is to do a "dependent ingredient" interlinking pass once the database is constructed.
94 lines
2.4 KiB
Rust
94 lines
2.4 KiB
Rust
use crate::{
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cycle::CycleRecoveryStrategy,
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ingredient::{Ingredient, IngredientRequiresReset},
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key::{DatabaseKeyIndex, DependencyIndex},
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runtime::{local_state::QueryOrigin, Runtime},
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AsId, IngredientIndex, Revision,
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};
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pub trait InputId: AsId {}
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impl<T: AsId> InputId for T {}
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pub struct InputIngredient<Id>
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where
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Id: InputId,
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{
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ingredient_index: IngredientIndex,
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counter: u32,
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_phantom: std::marker::PhantomData<Id>,
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}
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impl<Id> InputIngredient<Id>
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where
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Id: InputId,
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{
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pub fn new(index: IngredientIndex) -> Self {
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Self {
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ingredient_index: index,
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counter: Default::default(),
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_phantom: std::marker::PhantomData,
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}
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}
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pub fn database_key_index(&self, id: Id) -> DatabaseKeyIndex {
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DatabaseKeyIndex {
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ingredient_index: self.ingredient_index,
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key_index: id.as_id(),
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}
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}
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pub fn new_input(&mut self, _runtime: &mut Runtime) -> Id {
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let next_id = self.counter;
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self.counter += 1;
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Id::from_id(crate::Id::from_u32(next_id))
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}
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}
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impl<DB: ?Sized, Id> Ingredient<DB> for InputIngredient<Id>
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where
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Id: InputId,
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{
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fn maybe_changed_after(&self, _db: &DB, _input: DependencyIndex, _revision: Revision) -> bool {
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// Input ingredients are just a counter, they store no data, they are immortal.
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// Their *fields* are stored in function ingredients elsewhere.
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false
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}
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fn cycle_recovery_strategy(&self) -> CycleRecoveryStrategy {
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CycleRecoveryStrategy::Panic
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}
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fn origin(&self, _key_index: crate::Id) -> Option<QueryOrigin> {
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None
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}
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fn mark_validated_output(&self, _db: &DB, executor: DatabaseKeyIndex, output_key: crate::Id) {
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unreachable!(
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"mark_validated_output({:?}, {:?}): input cannot be the output of a tracked function",
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executor, output_key
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);
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}
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fn remove_stale_output(
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&self,
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_db: &DB,
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executor: DatabaseKeyIndex,
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stale_output_key: crate::Id,
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) {
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unreachable!(
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"remove_stale_output({:?}, {:?}): input cannot be the output of a tracked function",
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executor, stale_output_key
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);
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}
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fn reset_for_new_revision(&mut self) {
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panic!("unexpected call to `reset_for_new_revision`")
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}
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}
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impl<Id> IngredientRequiresReset for InputIngredient<Id>
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where
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Id: InputId,
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{
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const RESET_ON_NEW_REVISION: bool = false;
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}
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