3 files changed, 16 insertions, 18 deletions

diff --git a/crates/ra_assists/src/assists/move_bounds.rs b/crates/ra_assists/src/assists/move_bounds.rs
index fd4bdc55c..1d27832a3 100644
--- a/crates/ra_assists/src/assists/move_bounds.rs
+++ b/crates/ra_assists/src/assists/move_bounds.rs
@@ -39,8 +39,7 @@ pub(crate) fn move_bounds_to_where_clause(mut ctx: AssistCtx<impl HirDatabase>)
                 .type_params()
                 .filter(|it| it.type_bound_list().is_some())
                 .map(|type_param| {
-                    let without_bounds =
-                        AstEditor::new(type_param.clone()).remove_bounds().ast().clone();
+                    let without_bounds = type_param.remove_bounds();
                     (type_param, without_bounds)
                 });
 
diff --git a/crates/ra_assists/src/ast_editor.rs b/crates/ra_assists/src/ast_editor.rs
index 54849b7b0..69abf28a1 100644
--- a/crates/ra_assists/src/ast_editor.rs
+++ b/crates/ra_assists/src/ast_editor.rs
@@ -51,18 +51,3 @@ impl<N: AstNode> AstEditor<N> {
         N::cast(new_syntax).unwrap()
     }
 }
-
-impl AstEditor<ast::TypeParam> {
-    pub fn remove_bounds(&mut self) -> &mut Self {
-        let colon = match self.ast.colon_token() {
-            Some(it) => it,
-            None => return self,
-        };
-        let end = match self.ast.type_bound_list() {
-            Some(it) => it.syntax().clone().into(),
-            None => colon.clone().into(),
-        };
-        self.ast = self.replace_children(RangeInclusive::new(colon.into(), end), iter::empty());
-        self
-    }
-}
diff --git a/crates/ra_syntax/src/ast/edit.rs b/crates/ra_syntax/src/ast/edit.rs
index 6e64c0675..9d0fd1383 100644
--- a/crates/ra_syntax/src/ast/edit.rs
+++ b/crates/ra_syntax/src/ast/edit.rs
@@ -10,7 +10,7 @@ use crate::{
     ast::{
         self,
         make::{self, tokens},
-        AstNode,
+        AstNode, TypeBoundsOwner,
     },
     AstToken, Direction, InsertPosition, SmolStr, SyntaxElement,
     SyntaxKind::{ATTR, COMMENT, WHITESPACE},
@@ -185,6 +185,20 @@ impl ast::RecordFieldList {
     }
 }
 
+impl ast::TypeParam {
+    pub fn remove_bounds(&self) -> ast::TypeParam {
+        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(),
+        };
+        replace_children(self, RangeInclusive::new(colon.into(), end), iter::empty())
+    }
+}
+
 pub fn strip_attrs_and_docs<N: ast::AttrsOwner>(node: N) -> N {
     N::cast(strip_attrs_and_docs_inner(node.syntax().clone())).unwrap()
 }