Rebased

crates/hir-def/src/body/pretty.rs

@@ -2,6 +2,8 @@
 
 use std::fmt::{self, Write};
 
+use syntax::ast::HasName;
+
 use crate::{
     expr::{Array, BindingAnnotation, Literal, Statement},
     pretty::{print_generic_args, print_path, print_type_ref},
@@ -32,6 +34,16 @@ pub(super) fn print_body_hir(db: &dyn DefDatabase, body: &Body, owner: DefWithBo
             };
             format!("const {} = ", name)
         }
+        DefWithBodyId::VariantId(it) => {
+            needs_semi = false;
+            let src = it.parent.child_source(db);
+            let variant = &src.value[it.local_id];
+            let name = match &variant.name() {
+                Some(name) => name.to_string(),
+                None => "_".to_string(),
+            };
+            format!("{}", name)
+        }
     };
 
     let mut p = Printer { body, buf: header, indent_level: 0, needs_indent: false };

crates/hir/src/lib.rs

@@ -964,6 +964,12 @@ fn visibility(&self, db: &dyn HirDatabase) -> Visibility {
     }
 }
 
+impl From<&Variant> for DefWithBodyId {
+    fn from(&v: &Variant) -> Self {
+        DefWithBodyId::VariantId(v.into())
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct Variant {
     pub(crate) parent: Enum,
@@ -1179,6 +1185,7 @@ fn id(&self) -> DefWithBodyId {
             DefWithBody::Function(it) => it.id.into(),
             DefWithBody::Static(it) => it.id.into(),
             DefWithBody::Const(it) => it.id.into(),
+            DefWithBody::Variant(it) => it.into(),
         }
     }
 

crates/ide/src/hover/render.rs

@@ -3,7 +3,8 @@
 
 use either::Either;
 use hir::{
-    db::HirDatabase, AsAssocItem, AttributeTemplate, HasAttrs, HasSource, HirDisplay, Semantics, StructKind, TypeInfo,
+    db::HirDatabase, AsAssocItem, AttributeTemplate, HasAttrs, HasSource, HirDisplay, Semantics,
+    StructKind, TypeInfo,
 };
 use ide_db::{
     base_db::SourceDatabase,