2 files changed, 15 insertions, 13 deletions

diff --git a/crates/ra_syntax/src/ast/edit.rs b/crates/ra_syntax/src/ast/edit.rs
index 940c30c7f..abc7a646c 100644
--- a/crates/ra_syntax/src/ast/edit.rs
+++ b/crates/ra_syntax/src/ast/edit.rs
@@ -189,6 +189,21 @@ impl ast::RecordFieldList {
     }
 }
 
+impl ast::TypeAliasDef {
+    #[must_use]
+    pub fn remove_bounds(&self) -> ast::TypeAliasDef {
+        let colon = match self.colon_token() {
+            Some(it) => it,
+            None => return self.clone(),
+        };
+        let end = match self.type_bound_list() {
+            Some(it) => it.syntax().clone().into(),
+            None => colon.clone().into(),
+        };
+        self.replace_children(colon.into()..=end, iter::empty())
+    }
+}
+
 impl ast::TypeParam {
     #[must_use]
     pub fn remove_bounds(&self) -> ast::TypeParam {
diff --git a/crates/ra_syntax/src/ast/make.rs b/crates/ra_syntax/src/ast/make.rs
index 42116afbb..192c610f1 100644
--- a/crates/ra_syntax/src/ast/make.rs
+++ b/crates/ra_syntax/src/ast/make.rs
@@ -64,19 +64,6 @@ pub fn use_item(use_tree: ast::UseTree) -> ast::UseItem {
     ast_from_text(&format!("use {};", use_tree))
 }
 
-pub fn type_alias_def(
-    name: ast::Name,
-    bounds: Option<ast::TypeBoundList>,
-    ty: Option<ast::TypeRef>,
-) -> ast::TypeAliasDef {
-    match (bounds, ty) {
-        (None, None) => ast_from_text(&format!("type {};", name)),
-        (None, Some(ty)) => ast_from_text(&format!("type {} = {};", name, ty)),
-        (Some(bounds), None) => ast_from_text(&format!("type {}: {};", name, bounds)),
-        (Some(bounds), Some(ty)) => ast_from_text(&format!("type {}: {} = {};", name, bounds, ty)),
-    }
-}
-
 pub fn record_field(name: ast::NameRef, expr: Option<ast::Expr>) -> ast::RecordField {
     return match expr {
         Some(expr) => from_text(&format!("{}: {}", name, expr)),