1 use hir::db::HirDatabase;
7 use crate::{AssistCtx, Assist, non_trivia_sibling};
9 pub(crate) fn flip_comma(ctx: AssistCtx<impl HirDatabase>) -> Option<Assist> {
10 let comma = ctx.leaf_at_offset().find(|leaf| leaf.kind() == COMMA)?;
11 let prev = non_trivia_sibling(comma, Direction::Prev)?;
12 let next = non_trivia_sibling(comma, Direction::Next)?;
13 ctx.build("flip comma", |edit| {
14 edit.target(comma.range());
15 edit.replace(prev.range(), next.text());
16 edit.replace(next.range(), prev.text());
24 use crate::helpers::{check_assist, check_assist_target};
27 fn flip_comma_works_for_function_parameters() {
30 "fn foo(x: i32,<|> y: Result<(), ()>) {}",
31 "fn foo(y: Result<(), ()>,<|> x: i32) {}",
36 fn flip_comma_target() {
37 check_assist_target(flip_comma, "fn foo(x: i32,<|> y: Result<(), ()>) {}", ",")