1 files changed, 0 insertions, 84 deletions

diff --git a/crates/ra_ide_api_light/src/assists/add_derive.rs b/crates/ra_ide_api_light/src/assists/add_derive.rs
deleted file mode 100644
index 6e964d011..000000000
--- a/crates/ra_ide_api_light/src/assists/add_derive.rs
+++ /dev/null
@@ -1,84 +0,0 @@
-use ra_syntax::{
-    ast::{self, AstNode, AttrsOwner},
-    SyntaxKind::{WHITESPACE, COMMENT},
-    TextUnit,
-};
-
-use crate::assists::{AssistCtx, Assist};
-
-pub fn add_derive(ctx: AssistCtx) -> Option<Assist> {
-    let nominal = ctx.node_at_offset::<ast::NominalDef>()?;
-    let node_start = derive_insertion_offset(nominal)?;
-    ctx.build("add `#[derive]`", |edit| {
-        let derive_attr = nominal
-            .attrs()
-            .filter_map(|x| x.as_call())
-            .filter(|(name, _arg)| name == "derive")
-            .map(|(_name, arg)| arg)
-            .next();
-        let offset = match derive_attr {
-            None => {
-                edit.insert(node_start, "#[derive()]\n");
-                node_start + TextUnit::of_str("#[derive(")
-            }
-            Some(tt) => tt.syntax().range().end() - TextUnit::of_char(')'),
-        };
-        edit.set_cursor(offset)
-    })
-}
-
-// Insert `derive` after doc comments.
-fn derive_insertion_offset(nominal: &ast::NominalDef) -> Option<TextUnit> {
-    let non_ws_child = nominal
-        .syntax()
-        .children()
-        .find(|it| it.kind() != COMMENT && it.kind() != WHITESPACE)?;
-    Some(non_ws_child.range().start())
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::assists::check_assist;
-
-    #[test]
-    fn add_derive_new() {
-        check_assist(
-            add_derive,
-            "struct Foo { a: i32, <|>}",
-            "#[derive(<|>)]\nstruct Foo { a: i32, }",
-        );
-        check_assist(
-            add_derive,
-            "struct Foo { <|> a: i32, }",
-            "#[derive(<|>)]\nstruct Foo {  a: i32, }",
-        );
-    }
-
-    #[test]
-    fn add_derive_existing() {
-        check_assist(
-            add_derive,
-            "#[derive(Clone)]\nstruct Foo { a: i32<|>, }",
-            "#[derive(Clone<|>)]\nstruct Foo { a: i32, }",
-        );
-    }
-
-    #[test]
-    fn add_derive_new_with_doc_comment() {
-        check_assist(
-            add_derive,
-            "
-/// `Foo` is a pretty important struct.
-/// It does stuff.
-struct Foo { a: i32<|>, }
-            ",
-            "
-/// `Foo` is a pretty important struct.
-/// It does stuff.
-#[derive(<|>)]
-struct Foo { a: i32, }
-            ",
-        );
-    }
-}