crates/hir_ty/src/db.rs

   1 //! FIXME: write short doc here
   2
   3 use std::sync::Arc;
   4
   5 use arena::map::ArenaMap;
   6 use base_db::{impl_intern_key, salsa, CrateId, Upcast};
   7 use hir_def::{
   8     db::DefDatabase, expr::ExprId, DefWithBodyId, FunctionId, GenericDefId, ImplId, LocalFieldId,
   9     TypeParamId, VariantId,
  10 };
  11
  12 use crate::{
  13     method_resolution::{InherentImpls, TraitImpls},
  14     traits::chalk,
  15     Binders, CallableDefId, GenericPredicate, InferenceResult, OpaqueTyId, PolyFnSig,
  16     ReturnTypeImplTraits, TraitRef, Ty, TyDefId, ValueTyDefId,
  17 };
  18 use hir_expand::name::Name;
  19
  20 #[salsa::query_group(HirDatabaseStorage)]
  21 pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> {
  22     #[salsa::invoke(infer_wait)]
  23     #[salsa::transparent]
  24     fn infer(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
  25
  26     #[salsa::invoke(crate::infer::infer_query)]
  27     fn infer_query(&self, def: DefWithBodyId) -> Arc<InferenceResult>;
  28
  29     #[salsa::invoke(crate::infer::can_unify)]
  30     fn can_unify(&self, def: DefWithBodyId, ty1: Ty, ty2: Ty) -> bool;
  31
  32     #[salsa::invoke(crate::lower::ty_query)]
  33     #[salsa::cycle(crate::lower::ty_recover)]
  34     fn ty(&self, def: TyDefId) -> Binders<Ty>;
  35
  36     #[salsa::invoke(crate::lower::value_ty_query)]
  37     fn value_ty(&self, def: ValueTyDefId) -> Binders<Ty>;
  38
  39     #[salsa::invoke(crate::lower::impl_self_ty_query)]
  40     #[salsa::cycle(crate::lower::impl_self_ty_recover)]
  41     fn impl_self_ty(&self, def: ImplId) -> Binders<Ty>;
  42
  43     #[salsa::invoke(crate::lower::impl_trait_query)]
  44     fn impl_trait(&self, def: ImplId) -> Option<Binders<TraitRef>>;
  45
  46     #[salsa::invoke(crate::lower::field_types_query)]
  47     fn field_types(&self, var: VariantId) -> Arc<ArenaMap<LocalFieldId, Binders<Ty>>>;
  48
  49     #[salsa::invoke(crate::callable_item_sig)]
  50     fn callable_item_signature(&self, def: CallableDefId) -> PolyFnSig;
  51
  52     #[salsa::invoke(crate::lower::return_type_impl_traits)]
  53     fn return_type_impl_traits(
  54         &self,
  55         def: FunctionId,
  56     ) -> Option<Arc<Binders<ReturnTypeImplTraits>>>;
  57
  58     #[salsa::invoke(crate::lower::generic_predicates_for_param_query)]
  59     #[salsa::cycle(crate::lower::generic_predicates_for_param_recover)]
  60     fn generic_predicates_for_param(
  61         &self,
  62         param_id: TypeParamId,
  63     ) -> Arc<[Binders<GenericPredicate>]>;
  64
  65     #[salsa::invoke(crate::lower::generic_predicates_query)]
  66     fn generic_predicates(&self, def: GenericDefId) -> Arc<[Binders<GenericPredicate>]>;
  67
  68     #[salsa::invoke(crate::lower::generic_defaults_query)]
  69     fn generic_defaults(&self, def: GenericDefId) -> Arc<[Binders<Ty>]>;
  70
  71     #[salsa::invoke(InherentImpls::inherent_impls_in_crate_query)]
  72     fn inherent_impls_in_crate(&self, krate: CrateId) -> Arc<InherentImpls>;
  73
  74     #[salsa::invoke(TraitImpls::trait_impls_in_crate_query)]
  75     fn trait_impls_in_crate(&self, krate: CrateId) -> Arc<TraitImpls>;
  76
  77     #[salsa::invoke(TraitImpls::trait_impls_in_deps_query)]
  78     fn trait_impls_in_deps(&self, krate: CrateId) -> Arc<TraitImpls>;
  79
  80     // Interned IDs for Chalk integration
  81     #[salsa::interned]
  82     fn intern_callable_def(&self, callable_def: CallableDefId) -> InternedCallableDefId;
  83     #[salsa::interned]
  84     fn intern_type_param_id(&self, param_id: TypeParamId) -> GlobalTypeParamId;
  85     #[salsa::interned]
  86     fn intern_impl_trait_id(&self, id: OpaqueTyId) -> InternedOpaqueTyId;
  87     #[salsa::interned]
  88     fn intern_closure(&self, id: (DefWithBodyId, ExprId)) -> ClosureId;
  89
  90     #[salsa::invoke(chalk::associated_ty_data_query)]
  91     fn associated_ty_data(&self, id: chalk::AssocTypeId) -> Arc<chalk::AssociatedTyDatum>;
  92
  93     #[salsa::invoke(chalk::trait_datum_query)]
  94     fn trait_datum(&self, krate: CrateId, trait_id: chalk::TraitId) -> Arc<chalk::TraitDatum>;
  95
  96     #[salsa::invoke(chalk::struct_datum_query)]
  97     fn struct_datum(&self, krate: CrateId, struct_id: chalk::AdtId) -> Arc<chalk::StructDatum>;
  98
  99     #[salsa::invoke(crate::traits::chalk::impl_datum_query)]
 100     fn impl_datum(&self, krate: CrateId, impl_id: chalk::ImplId) -> Arc<chalk::ImplDatum>;
 101
 102     #[salsa::invoke(crate::traits::chalk::fn_def_datum_query)]
 103     fn fn_def_datum(&self, krate: CrateId, fn_def_id: chalk::FnDefId) -> Arc<chalk::FnDefDatum>;
 104
 105     #[salsa::invoke(crate::traits::chalk::associated_ty_value_query)]
 106     fn associated_ty_value(
 107         &self,
 108         krate: CrateId,
 109         id: chalk::AssociatedTyValueId,
 110     ) -> Arc<chalk::AssociatedTyValue>;
 111
 112     #[salsa::invoke(crate::traits::trait_solve_query)]
 113     fn trait_solve(
 114         &self,
 115         krate: CrateId,
 116         goal: crate::Canonical<crate::InEnvironment<crate::Obligation>>,
 117     ) -> Option<crate::traits::Solution>;
 118
 119     #[salsa::invoke(crate::traits::chalk::program_clauses_for_chalk_env_query)]
 120     fn program_clauses_for_chalk_env(
 121         &self,
 122         krate: CrateId,
 123         env: chalk_ir::Environment<chalk::Interner>,
 124     ) -> chalk_ir::ProgramClauses<chalk::Interner>;
 125 }
 126
 127 fn infer_wait(db: &impl HirDatabase, def: DefWithBodyId) -> Arc<InferenceResult> {
 128     let _p = profile::span("infer:wait").detail(|| match def {
 129         DefWithBodyId::FunctionId(it) => db.function_data(it).name.to_string(),
 130         DefWithBodyId::StaticId(it) => {
 131             db.static_data(it).name.clone().unwrap_or_else(Name::missing).to_string()
 132         }
 133         DefWithBodyId::ConstId(it) => {
 134             db.const_data(it).name.clone().unwrap_or_else(Name::missing).to_string()
 135         }
 136     });
 137     db.infer_query(def)
 138 }
 139
 140 #[test]
 141 fn hir_database_is_object_safe() {
 142     fn _assert_object_safe(_: &dyn HirDatabase) {}
 143 }
 144
 145 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 146 pub struct GlobalTypeParamId(salsa::InternId);
 147 impl_intern_key!(GlobalTypeParamId);
 148
 149 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 150 pub struct InternedOpaqueTyId(salsa::InternId);
 151 impl_intern_key!(InternedOpaqueTyId);
 152
 153 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 154 pub struct ClosureId(salsa::InternId);
 155 impl_intern_key!(ClosureId);
 156
 157 /// This exists just for Chalk, because Chalk just has a single `FnDefId` where
 158 /// we have different IDs for struct and enum variant constructors.
 159 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Ord, PartialOrd)]
 160 pub struct InternedCallableDefId(salsa::InternId);
 161 impl_intern_key!(InternedCallableDefId);