1 files changed, 116 insertions, 0 deletions

diff --git a/crates/ra_hir_ty/src/db.rs b/crates/ra_hir_ty/src/db.rs
new file mode 100644
index 000000000..aa2659c4b
--- /dev/null
+++ b/crates/ra_hir_ty/src/db.rs
@@ -0,0 +1,116 @@
+//! FIXME: write short doc here
+
+use std::sync::Arc;
+
+use hir_def::{
+    db::DefDatabase, DefWithBodyId, GenericDefId, ImplId, LocalStructFieldId, TraitId, VariantId,
+};
+use ra_arena::map::ArenaMap;
+use ra_db::{salsa, CrateId};
+
+use crate::{
+    method_resolution::CrateImplBlocks,
+    traits::{AssocTyValue, Impl},
+    CallableDef, FnSig, GenericPredicate, InferenceResult, Substs, Ty, TyDefId, TypeCtor,
+    ValueTyDefId,
+};
+
+#[salsa::query_group(HirDatabaseStorage)]
+#[salsa::requires(salsa::Database)]
+pub trait HirDatabase: DefDatabase {
+    #[salsa::invoke(crate::infer_query)]
+    fn infer(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
+
+    #[salsa::invoke(crate::lower::ty_query)]
+    fn ty(&self, def: TyDefId) -> Ty;
+
+    #[salsa::invoke(crate::lower::value_ty_query)]
+    fn value_ty(&self, def: ValueTyDefId) -> Ty;
+
+    #[salsa::invoke(crate::lower::field_types_query)]
+    fn field_types(&self, var: VariantId) -> Arc<ArenaMap<LocalStructFieldId, Ty>>;
+
+    #[salsa::invoke(crate::callable_item_sig)]
+    fn callable_item_signature(&self, def: CallableDef) -> FnSig;
+
+    #[salsa::invoke(crate::lower::generic_predicates_for_param_query)]
+    fn generic_predicates_for_param(
+        &self,
+        def: GenericDefId,
+        param_idx: u32,
+    ) -> Arc<[GenericPredicate]>;
+
+    #[salsa::invoke(crate::lower::generic_predicates_query)]
+    fn generic_predicates(&self, def: GenericDefId) -> Arc<[GenericPredicate]>;
+
+    #[salsa::invoke(crate::lower::generic_defaults_query)]
+    fn generic_defaults(&self, def: GenericDefId) -> Substs;
+
+    #[salsa::invoke(crate::method_resolution::CrateImplBlocks::impls_in_crate_query)]
+    fn impls_in_crate(&self, krate: CrateId) -> Arc<CrateImplBlocks>;
+
+    #[salsa::invoke(crate::traits::impls_for_trait_query)]
+    fn impls_for_trait(&self, krate: CrateId, trait_: TraitId) -> Arc<[ImplId]>;
+
+    /// This provides the Chalk trait solver instance. Because Chalk always
+    /// works from a specific crate, this query is keyed on the crate; and
+    /// because Chalk does its own internal caching, the solver is wrapped in a
+    /// Mutex and the query does an untracked read internally, to make sure the
+    /// cached state is thrown away when input facts change.
+    #[salsa::invoke(crate::traits::trait_solver_query)]
+    fn trait_solver(&self, krate: CrateId) -> crate::traits::TraitSolver;
+
+    // Interned IDs for Chalk integration
+    #[salsa::interned]
+    fn intern_type_ctor(&self, type_ctor: TypeCtor) -> crate::TypeCtorId;
+    #[salsa::interned]
+    fn intern_chalk_impl(&self, impl_: Impl) -> crate::traits::GlobalImplId;
+    #[salsa::interned]
+    fn intern_assoc_ty_value(&self, assoc_ty_value: AssocTyValue) -> crate::traits::AssocTyValueId;
+
+    #[salsa::invoke(crate::traits::chalk::associated_ty_data_query)]
+    fn associated_ty_data(
+        &self,
+        id: chalk_ir::TypeId,
+    ) -> Arc<chalk_rust_ir::AssociatedTyDatum<chalk_ir::family::ChalkIr>>;
+
+    #[salsa::invoke(crate::traits::chalk::trait_datum_query)]
+    fn trait_datum(
+        &self,
+        krate: CrateId,
+        trait_id: chalk_ir::TraitId,
+    ) -> Arc<chalk_rust_ir::TraitDatum<chalk_ir::family::ChalkIr>>;
+
+    #[salsa::invoke(crate::traits::chalk::struct_datum_query)]
+    fn struct_datum(
+        &self,
+        krate: CrateId,
+        struct_id: chalk_ir::StructId,
+    ) -> Arc<chalk_rust_ir::StructDatum<chalk_ir::family::ChalkIr>>;
+
+    #[salsa::invoke(crate::traits::chalk::impl_datum_query)]
+    fn impl_datum(
+        &self,
+        krate: CrateId,
+        impl_id: chalk_ir::ImplId,
+    ) -> Arc<chalk_rust_ir::ImplDatum<chalk_ir::family::ChalkIr>>;
+
+    #[salsa::invoke(crate::traits::chalk::associated_ty_value_query)]
+    fn associated_ty_value(
+        &self,
+        krate: CrateId,
+        id: chalk_rust_ir::AssociatedTyValueId,
+    ) -> Arc<chalk_rust_ir::AssociatedTyValue<chalk_ir::family::ChalkIr>>;
+
+    #[salsa::invoke(crate::traits::trait_solve_query)]
+    fn trait_solve(
+        &self,
+        krate: CrateId,
+        goal: crate::Canonical<crate::InEnvironment<crate::Obligation>>,
+    ) -> Option<crate::traits::Solution>;
+}
+
+#[test]
+fn hir_database_is_object_safe() {
+    fn _assert_object_safe(_: &dyn HirDatabase) {}
+}