From 7c0c713a102ee86ee32af115acba63a5c3b3a657 Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Mon, 5 Apr 2021 03:50:10 +0200
Subject: Intern `GenericParams`

Also share the same instance between `ItemTree` and `generic_params`
query.
---
 crates/hir_def/src/item_tree/lower.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'crates/hir_def/src/item_tree')

diff --git a/crates/hir_def/src/item_tree/lower.rs b/crates/hir_def/src/item_tree/lower.rs
index 0c8112dda..c5629af24 100644
--- a/crates/hir_def/src/item_tree/lower.rs
+++ b/crates/hir_def/src/item_tree/lower.rs
@@ -434,7 +434,7 @@ impl Ctx {
         let mut res = Function {
             name,
             visibility,
-            generic_params: GenericParamsId::EMPTY,
+            generic_params: Interned::new(GenericParams::default()),
             abi,
             params,
             ret_type: Interned::new(ret_type),
@@ -682,7 +682,7 @@ impl Ctx {
         &mut self,
         owner: GenericsOwner<'_>,
         node: &impl ast::GenericParamsOwner,
-    ) -> GenericParamsId {
+    ) -> Interned<GenericParams> {
         // Generics are part of item headers and may contain inner items we need to collect.
         if let Some(params) = node.generic_param_list() {
             self.collect_inner_items(params.syntax());
@@ -698,7 +698,7 @@ impl Ctx {
         &mut self,
         owner: GenericsOwner<'_>,
         node: &impl ast::GenericParamsOwner,
-    ) -> GenericParamsId {
+    ) -> Interned<GenericParams> {
         let mut sm = &mut Default::default();
         let mut generics = GenericParams::default();
         match owner {
@@ -740,7 +740,7 @@ impl Ctx {
         }
 
         generics.shrink_to_fit();
-        self.data().generics.alloc(generics)
+        Interned::new(generics)
     }
 
     fn lower_type_bounds(&mut self, node: &impl ast::TypeBoundsOwner) -> Vec<TypeBound> {
-- 
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