| use crate::dep_graph::SerializedDepNodeIndex; |
| use crate::dep_graph::{DepKind, DepNode}; |
| use crate::hir::def_id::{CrateNum, DefId}; |
| use crate::ty::TyCtxt; |
| use crate::ty::query::queries; |
| use crate::ty::query::{Query, QueryName}; |
| use crate::ty::query::QueryCache; |
| use crate::ty::query::plumbing::CycleError; |
| use rustc_data_structures::profiling::ProfileCategory; |
| |
| use std::borrow::Cow; |
| use std::hash::Hash; |
| use std::fmt::Debug; |
| use rustc_data_structures::sharded::Sharded; |
| use rustc_data_structures::fingerprint::Fingerprint; |
| use crate::ich::StableHashingContext; |
| |
| // Query configuration and description traits. |
| |
| // FIXME(eddyb) false positive, the lifetime parameter is used for `Key`/`Value`. |
| #[allow(unused_lifetimes)] |
| pub trait QueryConfig<'tcx> { |
| const NAME: QueryName; |
| const CATEGORY: ProfileCategory; |
| |
| type Key: Eq + Hash + Clone + Debug; |
| type Value: Clone; |
| } |
| |
| pub(crate) trait QueryAccessors<'tcx>: QueryConfig<'tcx> { |
| const ANON: bool; |
| const EVAL_ALWAYS: bool; |
| |
| fn query(key: Self::Key) -> Query<'tcx>; |
| |
| // Don't use this method to access query results, instead use the methods on TyCtxt |
| fn query_cache<'a>(tcx: TyCtxt<'tcx>) -> &'a Sharded<QueryCache<'tcx, Self>>; |
| |
| fn to_dep_node(tcx: TyCtxt<'tcx>, key: &Self::Key) -> DepNode; |
| |
| fn dep_kind() -> DepKind; |
| |
| // Don't use this method to compute query results, instead use the methods on TyCtxt |
| fn compute(tcx: TyCtxt<'tcx>, key: Self::Key) -> Self::Value; |
| |
| fn hash_result( |
| hcx: &mut StableHashingContext<'_>, |
| result: &Self::Value |
| ) -> Option<Fingerprint>; |
| |
| fn handle_cycle_error(tcx: TyCtxt<'tcx>, error: CycleError<'tcx>) -> Self::Value; |
| } |
| |
| pub(crate) trait QueryDescription<'tcx>: QueryAccessors<'tcx> { |
| fn describe(tcx: TyCtxt<'_>, key: Self::Key) -> Cow<'static, str>; |
| |
| #[inline] |
| fn cache_on_disk(_: TyCtxt<'tcx>, _: Self::Key, _: Option<&Self::Value>) -> bool { |
| false |
| } |
| |
| fn try_load_from_disk(_: TyCtxt<'tcx>, _: SerializedDepNodeIndex) -> Option<Self::Value> { |
| bug!("QueryDescription::load_from_disk() called for an unsupported query.") |
| } |
| } |
| |
| impl<'tcx, M: QueryAccessors<'tcx, Key = DefId>> QueryDescription<'tcx> for M { |
| default fn describe(tcx: TyCtxt<'_>, def_id: DefId) -> Cow<'static, str> { |
| if !tcx.sess.verbose() { |
| format!("processing `{}`", tcx.def_path_str(def_id)).into() |
| } else { |
| let name = ::std::any::type_name::<M>(); |
| format!("processing {:?} with query `{}`", def_id, name).into() |
| } |
| } |
| |
| default fn cache_on_disk(_: TyCtxt<'tcx>, _: Self::Key, _: Option<&Self::Value>) -> bool { |
| false |
| } |
| |
| default fn try_load_from_disk( |
| _: TyCtxt<'tcx>, |
| _: SerializedDepNodeIndex, |
| ) -> Option<Self::Value> { |
| bug!("QueryDescription::load_from_disk() called for an unsupported query.") |
| } |
| } |
| |
| impl<'tcx> QueryDescription<'tcx> for queries::analysis<'tcx> { |
| fn describe(_tcx: TyCtxt<'_>, _: CrateNum) -> Cow<'static, str> { |
| "running analysis passes on this crate".into() |
| } |
| } |