1 files changed, 17 insertions, 0 deletions

diff --git a/crates/hir/src/from_id.rs b/crates/hir/src/from_id.rs
index 265ef6d1f..dd3fcfe4a 100644
--- a/crates/hir/src/from_id.rs
+++ b/crates/hir/src/from_id.rs
@@ -41,6 +41,7 @@ from_id![
     (hir_def::FunctionId, crate::Function),
     (hir_def::ImplId, crate::ImplDef),
     (hir_def::TypeParamId, crate::TypeParam),
+    (hir_def::LifetimeParamId, crate::LifetimeParam),
     (hir_expand::MacroDefId, crate::MacroDef)
 ];
 
@@ -154,6 +155,22 @@ impl From<GenericDef> for GenericDefId {
     }
 }
 
+impl From<GenericDefId> for GenericDef {
+    fn from(def: GenericDefId) -> Self {
+        match def {
+            GenericDefId::FunctionId(it) => GenericDef::Function(it.into()),
+            GenericDefId::AdtId(it) => GenericDef::Adt(it.into()),
+            GenericDefId::TraitId(it) => GenericDef::Trait(it.into()),
+            GenericDefId::TypeAliasId(it) => GenericDef::TypeAlias(it.into()),
+            GenericDefId::ImplId(it) => GenericDef::ImplDef(it.into()),
+            GenericDefId::EnumVariantId(it) => {
+                GenericDef::EnumVariant(EnumVariant { parent: it.parent.into(), id: it.local_id })
+            }
+            GenericDefId::ConstId(it) => GenericDef::Const(it.into()),
+        }
+    }
+}
+
 impl From<Adt> for GenericDefId {
     fn from(id: Adt) -> Self {
         match id {