From 9047a4ad4620d3b37d17a11e6dee0ea4ffbd7af1 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Mon, 25 Nov 2019 16:16:41 +0300
Subject: Use more IDs

---
 crates/ra_hir/src/ty/lower.rs | 35 ++++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

(limited to 'crates/ra_hir')

diff --git a/crates/ra_hir/src/ty/lower.rs b/crates/ra_hir/src/ty/lower.rs
index 1ceafd9b1..348c5f67d 100644
--- a/crates/ra_hir/src/ty/lower.rs
+++ b/crates/ra_hir/src/ty/lower.rs
@@ -14,7 +14,7 @@ use hir_def::{
     path::{GenericArg, PathSegment},
     resolver::{HasResolver, Resolver, TypeNs},
     type_ref::{TypeBound, TypeRef},
-    AdtId, EnumVariantId, GenericDefId, LocalStructFieldId, VariantId,
+    AdtId, EnumVariantId, FunctionId, GenericDefId, LocalStructFieldId, StructId, VariantId,
 };
 use ra_arena::map::ArenaMap;
 
@@ -546,9 +546,9 @@ pub(crate) fn type_for_def(db: &impl HirDatabase, def: TypableDef, ns: Namespace
 /// Build the signature of a callable item (function, struct or enum variant).
 pub(crate) fn callable_item_sig(db: &impl HirDatabase, def: CallableDef) -> FnSig {
     match def {
-        CallableDef::Function(f) => fn_sig_for_fn(db, f),
-        CallableDef::Struct(s) => fn_sig_for_struct_constructor(db, s),
-        CallableDef::EnumVariant(e) => fn_sig_for_enum_variant_constructor(db, e),
+        CallableDef::Function(f) => fn_sig_for_fn(db, f.id),
+        CallableDef::Struct(s) => fn_sig_for_struct_constructor(db, s.id),
+        CallableDef::EnumVariant(e) => fn_sig_for_enum_variant_constructor(db, e.into()),
     }
 }
 
@@ -630,9 +630,9 @@ pub(crate) fn generic_defaults_query(db: &impl HirDatabase, def: GenericDefId) -
     Substs(defaults)
 }
 
-fn fn_sig_for_fn(db: &impl HirDatabase, def: Function) -> FnSig {
-    let data = db.function_data(def.id);
-    let resolver = def.id.resolver(db);
+fn fn_sig_for_fn(db: &impl HirDatabase, def: FunctionId) -> FnSig {
+    let data = db.function_data(def);
+    let resolver = def.resolver(db);
     let params = data.params.iter().map(|tr| Ty::from_hir(db, &resolver, tr)).collect::<Vec<_>>();
     let ret = Ty::from_hir(db, &resolver, &data.ret_type);
     FnSig::from_params_and_return(params, ret)
@@ -703,15 +703,15 @@ impl From<Option<BuiltinFloat>> for Uncertain<FloatTy> {
     }
 }
 
-fn fn_sig_for_struct_constructor(db: &impl HirDatabase, def: Struct) -> FnSig {
-    let struct_data = db.struct_data(def.id.into());
+fn fn_sig_for_struct_constructor(db: &impl HirDatabase, def: StructId) -> FnSig {
+    let struct_data = db.struct_data(def.into());
     let fields = struct_data.variant_data.fields();
-    let resolver = def.id.resolver(db);
+    let resolver = def.resolver(db);
     let params = fields
         .iter()
         .map(|(_, field)| Ty::from_hir(db, &resolver, &field.type_ref))
         .collect::<Vec<_>>();
-    let ret = type_for_adt(db, def);
+    let ret = type_for_adt(db, Struct::from(def));
     FnSig::from_params_and_return(params, ret)
 }
 
@@ -726,17 +726,18 @@ fn type_for_struct_constructor(db: &impl HirDatabase, def: Struct) -> Ty {
     Ty::apply(TypeCtor::FnDef(def.into()), substs)
 }
 
-fn fn_sig_for_enum_variant_constructor(db: &impl HirDatabase, def: EnumVariant) -> FnSig {
-    let var_data = def.variant_data(db);
-    let fields = var_data.fields();
-    let resolver = def.parent.id.resolver(db);
+fn fn_sig_for_enum_variant_constructor(db: &impl HirDatabase, def: EnumVariantId) -> FnSig {
+    let enum_data = db.enum_data(def.parent);
+    let var_data = &enum_data.variants[def.local_id];
+    let fields = var_data.variant_data.fields();
+    let resolver = def.parent.resolver(db);
     let params = fields
         .iter()
         .map(|(_, field)| Ty::from_hir(db, &resolver, &field.type_ref))
         .collect::<Vec<_>>();
-    let generics = db.generic_params(def.parent_enum(db).id.into());
+    let generics = db.generic_params(def.parent.into());
     let substs = Substs::identity(&generics);
-    let ret = type_for_adt(db, def.parent_enum(db)).subst(&substs);
+    let ret = type_for_adt(db, Enum::from(def.parent)).subst(&substs);
     FnSig::from_params_and_return(params, ret)
 }
 
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