crates/hir_ty/src/db.rs

   1 //! The home of `HirDatabase`, which is the Salsa database containing all the
   2 //! type inference-related queries.
   3
   4 use std::sync::Arc;
   5
   6 use base_db::{impl_intern_key, salsa, CrateId, Upcast};
   7 use hir_def::{
   8     db::DefDatabase, expr::ExprId, ConstParamId, DefWithBodyId, FunctionId, GenericDefId, ImplId,
   9     LifetimeParamId, LocalFieldId, TypeParamId, VariantId,
  10 };
  11 use la_arena::ArenaMap;
  12
  13 use crate::{
  14     chalk_db,
  15     method_resolution::{InherentImpls, TraitImpls},
  16     Binders, CallableDefId, FnDefId, ImplTraitId, InferenceResult, Interner, PolyFnSig,
  17     QuantifiedWhereClause, ReturnTypeImplTraits, TraitRef, Ty, TyDefId, ValueTyDefId,
  18 };
  19 use hir_expand::name::Name;
  20
  21 #[salsa::query_group(HirDatabaseStorage)]
  22 pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
  23     #[salsa::invoke(infer_wait)]
  24     #[salsa::transparent]
  25     fn infer(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
  26
  27     #[salsa::invoke(crate::infer::infer_query)]
  28     fn infer_query(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
  29
  30     #[salsa::invoke(crate::lower::ty_query)]
  31     #[salsa::cycle(crate::lower::ty_recover)]
  32     fn ty(&self, def: TyDefId) -> Binders<Ty>;
  33
  34     #[salsa::invoke(crate::lower::value_ty_query)]
  35     fn value_ty(&self, def: ValueTyDefId) -> Binders<Ty>;
  36
  37     #[salsa::invoke(crate::lower::impl_self_ty_query)]
  38     #[salsa::cycle(crate::lower::impl_self_ty_recover)]
  39     fn impl_self_ty(&self, def: ImplId) -> Binders<Ty>;
  40
  41     #[salsa::invoke(crate::lower::const_param_ty_query)]
  42     fn const_param_ty(&self, def: ConstParamId) -> Ty;
  43
  44     #[salsa::invoke(crate::lower::impl_trait_query)]
  45     fn impl_trait(&self, def: ImplId) -> Option<Binders<TraitRef>>;
  46
  47     #[salsa::invoke(crate::lower::field_types_query)]
  48     fn field_types(&self, var: VariantId) -> Arc<ArenaMap<LocalFieldId, Binders<Ty>>>;
  49
  50     #[salsa::invoke(crate::callable_item_sig)]
  51     fn callable_item_signature(&self, def: CallableDefId) -> PolyFnSig;
  52
  53     #[salsa::invoke(crate::lower::return_type_impl_traits)]
  54     fn return_type_impl_traits(
  55         &self,
  56         def: FunctionId,
  57     ) -> Option<Arc<Binders<ReturnTypeImplTraits>>>;
  58
  59     #[salsa::invoke(crate::lower::generic_predicates_for_param_query)]
  60     #[salsa::cycle(crate::lower::generic_predicates_for_param_recover)]
  61     fn generic_predicates_for_param(
  62         &self,
  63         param_id: TypeParamId,
  64     ) -> Arc<[Binders<QuantifiedWhereClause>]>;
  65
  66     #[salsa::invoke(crate::lower::generic_predicates_query)]
  67     fn generic_predicates(&self, def: GenericDefId) -> Arc<[Binders<QuantifiedWhereClause>]>;
  68
  69     #[salsa::invoke(crate::lower::trait_environment_query)]
  70     fn trait_environment(&self, def: GenericDefId) -> Arc<crate::TraitEnvironment>;
  71
  72     #[salsa::invoke(crate::lower::generic_defaults_query)]
  73     fn generic_defaults(&self, def: GenericDefId) -> Arc<[Binders<Ty>]>;
  74
  75     #[salsa::invoke(InherentImpls::inherent_impls_in_crate_query)]
  76     fn inherent_impls_in_crate(&self, krate: CrateId) -> Arc<InherentImpls>;
  77
  78     #[salsa::invoke(TraitImpls::trait_impls_in_crate_query)]
  79     fn trait_impls_in_crate(&self, krate: CrateId) -> Arc<TraitImpls>;
  80
  81     #[salsa::invoke(TraitImpls::trait_impls_in_deps_query)]
  82     fn trait_impls_in_deps(&self, krate: CrateId) -> Arc<TraitImpls>;
  83
  84     // Interned IDs for Chalk integration
  85     #[salsa::interned]
  86     fn intern_callable_def(&self, callable_def: CallableDefId) -> InternedCallableDefId;
  87     #[salsa::interned]
  88     fn intern_type_param_id(&self, param_id: TypeParamId) -> InternedTypeParamId;
  89     #[salsa::interned]
  90     fn intern_lifetime_param_id(&self, param_id: LifetimeParamId) -> InternedLifetimeParamId;
  91     #[salsa::interned]
  92     fn intern_const_param_id(&self, param_id: ConstParamId) -> InternedConstParamId;
  93     #[salsa::interned]
  94     fn intern_impl_trait_id(&self, id: ImplTraitId) -> InternedOpaqueTyId;
  95     #[salsa::interned]
  96     fn intern_closure(&self, id: (DefWithBodyId, ExprId)) -> InternedClosureId;
  97
  98     #[salsa::invoke(chalk_db::associated_ty_data_query)]
  99     fn associated_ty_data(&self, id: chalk_db::AssocTypeId) -> Arc<chalk_db::AssociatedTyDatum>;
 100
 101     #[salsa::invoke(chalk_db::trait_datum_query)]
 102     fn trait_datum(&self, krate: CrateId, trait_id: chalk_db::TraitId)
 103         -> Arc<chalk_db::TraitDatum>;
 104
 105     #[salsa::invoke(chalk_db::struct_datum_query)]
 106     fn struct_datum(
 107         &self,
 108         krate: CrateId,
 109         struct_id: chalk_db::AdtId,
 110     ) -> Arc<chalk_db::StructDatum>;
 111
 112     #[salsa::invoke(chalk_db::impl_datum_query)]
 113     fn impl_datum(&self, krate: CrateId, impl_id: chalk_db::ImplId) -> Arc<chalk_db::ImplDatum>;
 114
 115     #[salsa::invoke(chalk_db::fn_def_datum_query)]
 116     fn fn_def_datum(&self, krate: CrateId, fn_def_id: FnDefId) -> Arc<chalk_db::FnDefDatum>;
 117
 118     #[salsa::invoke(chalk_db::fn_def_variance_query)]
 119     fn fn_def_variance(&self, krate: CrateId, fn_def_id: FnDefId) -> chalk_db::Variances;
 120
 121     #[salsa::invoke(chalk_db::adt_variance_query)]
 122     fn adt_variance(&self, krate: CrateId, adt_id: chalk_db::AdtId) -> chalk_db::Variances;
 123
 124     #[salsa::invoke(chalk_db::associated_ty_value_query)]
 125     fn associated_ty_value(
 126         &self,
 127         krate: CrateId,
 128         id: chalk_db::AssociatedTyValueId,
 129     ) -> Arc<chalk_db::AssociatedTyValue>;
 130
 131     #[salsa::invoke(trait_solve_wait)]
 132     #[salsa::transparent]
 133     fn trait_solve(
 134         &self,
 135         krate: CrateId,
 136         goal: crate::Canonical<crate::InEnvironment<crate::DomainGoal>>,
 137     ) -> Option<crate::Solution>;
 138
 139     #[salsa::invoke(crate::traits::trait_solve_query)]
 140     fn trait_solve_query(
 141         &self,
 142         krate: CrateId,
 143         goal: crate::Canonical<crate::InEnvironment<crate::DomainGoal>>,
 144     ) -> Option<crate::Solution>;
 145
 146     #[salsa::invoke(chalk_db::program_clauses_for_chalk_env_query)]
 147     fn program_clauses_for_chalk_env(
 148         &self,
 149         krate: CrateId,
 150         env: chalk_ir::Environment<Interner>,
 151     ) -> chalk_ir::ProgramClauses<Interner>;
 152 }
 153
 154 fn infer_wait(db: &dyn HirDatabase, def: DefWithBodyId) -> Arc<InferenceResult> {
 155     let _p = profile::span("infer:wait").detail(|| match def {
 156         DefWithBodyId::FunctionId(it) => db.function_data(it).name.to_string(),
 157         DefWithBodyId::StaticId(it) => {
 158             db.static_data(it).name.clone().unwrap_or_else(Name::missing).to_string()
 159         }
 160         DefWithBodyId::ConstId(it) => {
 161             db.const_data(it).name.clone().unwrap_or_else(Name::missing).to_string()
 162         }
 163     });
 164     db.infer_query(def)
 165 }
 166
 167 fn trait_solve_wait(
 168     db: &dyn HirDatabase,
 169     krate: CrateId,
 170     goal: crate::Canonical<crate::InEnvironment<crate::DomainGoal>>,
 171 ) -> Option<crate::Solution> {
 172     let _p = profile::span("trait_solve::wait");
 173     db.trait_solve_query(krate, goal)
 174 }
 175
 176 #[test]
 177 fn hir_database_is_object_safe() {
 178     fn _assert_object_safe(_: &dyn HirDatabase) {}
 179 }
 180
 181 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 182 pub struct InternedTypeParamId(salsa::InternId);
 183 impl_intern_key!(InternedTypeParamId);
 184
 185 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 186 pub struct InternedLifetimeParamId(salsa::InternId);
 187 impl_intern_key!(InternedLifetimeParamId);
 188
 189 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 190 pub struct InternedConstParamId(salsa::InternId);
 191 impl_intern_key!(InternedConstParamId);
 192
 193 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 194 pub struct InternedOpaqueTyId(salsa::InternId);
 195 impl_intern_key!(InternedOpaqueTyId);
 196
 197 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 198 pub struct InternedClosureId(salsa::InternId);
 199 impl_intern_key!(InternedClosureId);
 200
 201 /// This exists just for Chalk, because Chalk just has a single `FnDefId` where
 202 /// we have different IDs for struct and enum variant constructors.
 203 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Ord, PartialOrd)]
 204 pub struct InternedCallableDefId(salsa::InternId);
 205 impl_intern_key!(InternedCallableDefId);