Use GenericDefId more

crates/ra_hir/src/db.rs

@@ -24,7 +24,7 @@
         RawItemsWithSourceMapQuery, StaticDataQuery, StructDataQuery, TraitDataQuery,
         TypeAliasDataQuery,
     },
-    LocalStructFieldId, VariantId,
+    GenericDefId, LocalStructFieldId, VariantId,
 };
 pub use hir_expand::db::{
     AstDatabase, AstDatabaseStorage, AstIdMapQuery, MacroArgQuery, MacroDefQuery, MacroExpandQuery,
@@ -54,7 +54,7 @@ fn generic_predicates_for_param(
     ) -> Arc<[GenericPredicate]>;
 
     #[salsa::invoke(crate::ty::generic_predicates_query)]
-    fn generic_predicates(&self, def: GenericDef) -> Arc<[GenericPredicate]>;
+    fn generic_predicates(&self, def: GenericDefId) -> Arc<[GenericPredicate]>;
 
     #[salsa::invoke(crate::ty::generic_defaults_query)]
     fn generic_defaults(&self, def: GenericDef) -> Substs;

crates/ra_hir/src/from_id.rs

@@ -9,9 +9,8 @@
 };
 
 use crate::{
-    ty::{CallableDef, TypableDef},
-    Adt, AssocItem, AttrDef, Const, Crate, DefWithBody, EnumVariant, Function, GenericDef,
-    ModuleDef, Static, StructField, TypeAlias, VariantDef,
+    ty::TypableDef, Adt, AssocItem, AttrDef, Const, Crate, DefWithBody, EnumVariant, Function,
+    GenericDef, ModuleDef, Static, StructField, TypeAlias, VariantDef,
 };
 
 impl From<ra_db::CrateId> for Crate {
@@ -214,18 +213,6 @@ fn from(id: Adt) -> Self {
     }
 }
 
-impl From<CallableDef> for GenericDefId {
-    fn from(def: CallableDef) -> Self {
-        match def {
-            CallableDef::Function(it) => it.id.into(),
-            CallableDef::Struct(it) => it.id.into(),
-            CallableDef::EnumVariant(it) => {
-                EnumVariantId { parent: it.parent.id, local_id: it.id }.into()
-            }
-        }
-    }
-}
-
 impl From<VariantDef> for VariantId {
     fn from(def: VariantDef) -> Self {
         match def {

crates/ra_hir/src/ty.rs

@@ -17,7 +17,7 @@
 use std::sync::Arc;
 use std::{fmt, iter, mem};
 
-use hir_def::{generics::GenericParams, AdtId};
+use hir_def::{generics::GenericParams, AdtId, GenericDefId};
 use ra_db::{impl_intern_key, salsa};
 
 use crate::{
@@ -176,7 +176,7 @@ pub fn krate(self, db: &impl HirDatabase) -> Option<Crate> {
         }
     }
 
-    pub fn as_generic_def(self) -> Option<crate::GenericDef> {
+    pub fn as_generic_def(self) -> Option<GenericDefId> {
         match self {
             TypeCtor::Bool
             | TypeCtor::Char
@@ -193,7 +193,7 @@ pub fn as_generic_def(self) -> Option<crate::GenericDef> {
             | TypeCtor::Closure { .. } => None,
             TypeCtor::Adt(adt) => Some(adt.into()),
             TypeCtor::FnDef(callable) => Some(callable.into()),
-            TypeCtor::AssociatedType(type_alias) => Some(type_alias.into()),
+            TypeCtor::AssociatedType(type_alias) => Some(type_alias.id.into()),
         }
     }
 }

crates/ra_hir/src/ty/lower.rs

@@ -14,7 +14,7 @@
     path::{GenericArg, PathSegment},
     resolver::{HasResolver, Resolver, TypeNs},
     type_ref::{TypeBound, TypeRef},
-    AdtId, GenericDefId, LocalStructFieldId, VariantId,
+    AdtId, EnumVariantId, GenericDefId, LocalStructFieldId, VariantId,
 };
 use ra_arena::map::ArenaMap;
 
@@ -605,9 +605,9 @@ pub(crate) fn lower(db: &impl HirDatabase, resolver: &Resolver) -> Arc<TraitEnvi
 /// Resolve the where clause(s) of an item with generics.
 pub(crate) fn generic_predicates_query(
     db: &impl HirDatabase,
-    def: GenericDef,
+    def: GenericDefId,
 ) -> Arc<[GenericPredicate]> {
-    let resolver = GenericDefId::from(def).resolver(db);
+    let resolver = def.resolver(db);
     resolver
         .where_predicates_in_scope()
         .flat_map(|pred| GenericPredicate::from_where_predicate(db, &resolver, pred))
@@ -819,12 +819,12 @@ pub fn krate(self, db: &impl HirDatabase) -> Option<crate::Crate> {
     }
 }
 
-impl From<CallableDef> for GenericDef {
-    fn from(def: CallableDef) -> GenericDef {
+impl From<CallableDef> for GenericDefId {
+    fn from(def: CallableDef) -> GenericDefId {
         match def {
-            CallableDef::Function(f) => f.into(),
-            CallableDef::Struct(s) => s.into(),
-            CallableDef::EnumVariant(e) => e.into(),
+            CallableDef::Function(f) => f.id.into(),
+            CallableDef::Struct(s) => s.id.into(),
+            CallableDef::EnumVariant(e) => EnumVariantId::from(e).into(),
         }
     }
 }

crates/ra_hir/src/ty/traits/chalk.rs

@@ -9,7 +9,7 @@
 };
 use chalk_rust_ir::{AssociatedTyDatum, AssociatedTyValue, ImplDatum, StructDatum, TraitDatum};
 
-use hir_def::lang_item::LangItemTarget;
+use hir_def::{lang_item::LangItemTarget, GenericDefId};
 use hir_expand::name;
 
 use ra_db::salsa::{InternId, InternKey};
@@ -19,7 +19,7 @@
     db::HirDatabase,
     ty::display::HirDisplay,
     ty::{ApplicationTy, GenericPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor, TypeWalk},
-    Crate, GenericDef, ImplBlock, Trait, TypeAlias,
+    Crate, ImplBlock, Trait, TypeAlias,
 };
 
 /// This represents a trait whose name we could not resolve.
@@ -402,7 +402,7 @@ fn make_binders<T>(value: T, num_vars: usize) -> chalk_ir::Binders<T> {
 
 fn convert_where_clauses(
     db: &impl HirDatabase,
-    def: GenericDef,
+    def: GenericDefId,
     substs: &Substs,
 ) -> Vec<chalk_ir::QuantifiedWhereClause<ChalkIr>> {
     let generic_predicates = db.generic_predicates(def);
@@ -561,7 +561,7 @@ pub(crate) fn trait_datum_query(
         marker: false,
         fundamental: false,
     };
-    let where_clauses = convert_where_clauses(db, trait_.into(), &bound_vars);
+    let where_clauses = convert_where_clauses(db, trait_.id.into(), &bound_vars);
     let associated_ty_ids = trait_
         .items(db)
         .into_iter()
@@ -643,7 +643,7 @@ fn impl_block_datum(
     } else {
         chalk_rust_ir::ImplType::External
     };
-    let where_clauses = convert_where_clauses(db, impl_block.into(), &bound_vars);
+    let where_clauses = convert_where_clauses(db, impl_block.id.into(), &bound_vars);
     let negative = impl_block.is_negative(db);
     debug!(
         "impl {:?}: {}{} where {:?}",