Remove make::match_arm_with_guard

crates/ide_assists/src/handlers/early_return.rs

@@ -133,12 +133,13 @@ pub(crate) fn convert_to_guarded_return(acc: &mut Assists, ctx: &AssistContext)
                                 let path = make::ext::ident_path("it");
                                 make::expr_path(path)
                             };
-                            make::match_arm(once(pat.into()), expr)
+                            make::match_arm(once(pat.into()), None, expr)
                         };
 
                         let sad_arm = make::match_arm(
                             // FIXME: would be cool to use `None` or `Err(_)` if appropriate
                             once(make::wildcard_pat().into()),
+                            None,
                             early_expression,
                         );
 

crates/ide_assists/src/handlers/extract_function.rs

@@ -1089,12 +1089,12 @@ fn make_call_expr(&self, call_expr: ast::Expr) -> ast::Expr {
                     let value_pat = make::ident_pat(make::name(some_name));
                     let pat = make::tuple_struct_pat(path, iter::once(value_pat.into()));
                     let value = make::expr_path(make::ext::ident_path(some_name));
-                    make::match_arm(iter::once(pat.into()), value)
+                    make::match_arm(iter::once(pat.into()), None, value)
                 };
                 let none_arm = {
                     let path = make::ext::ident_path("None");
                     let pat = make::path_pat(path);
-                    make::match_arm(iter::once(pat), none.make_result_handler(None))
+                    make::match_arm(iter::once(pat), None, none.make_result_handler(None))
                 };
                 let arms = make::match_arm_list(vec![some_arm, none_arm]);
                 make::expr_match(call_expr, arms)
@@ -1108,14 +1108,18 @@ fn make_call_expr(&self, call_expr: ast::Expr) -> ast::Expr {
                     let value_pat = make::ident_pat(make::name(ok_name));
                     let pat = make::tuple_struct_pat(path, iter::once(value_pat.into()));
                     let value = make::expr_path(make::ext::ident_path(ok_name));
-                    make::match_arm(iter::once(pat.into()), value)
+                    make::match_arm(iter::once(pat.into()), None, value)
                 };
                 let err_arm = {
                     let path = make::ext::ident_path("Err");
                     let value_pat = make::ident_pat(make::name(err_name));
                     let pat = make::tuple_struct_pat(path, iter::once(value_pat.into()));
                     let value = make::expr_path(make::ext::ident_path(err_name));
-                    make::match_arm(iter::once(pat.into()), err.make_result_handler(Some(value)))
+                    make::match_arm(
+                        iter::once(pat.into()),
+                        None,
+                        err.make_result_handler(Some(value)),
+                    )
                 };
                 let arms = make::match_arm_list(vec![ok_arm, err_arm]);
                 make::expr_match(call_expr, arms)

crates/ide_assists/src/handlers/fill_match_arms.rs

@@ -129,7 +129,7 @@ pub(crate) fn fill_match_arms(acc: &mut Assists, ctx: &AssistContext) -> Option<
         |builder| {
             let new_match_arm_list = match_arm_list.clone_for_update();
             let missing_arms = missing_pats
-                .map(|pat| make::match_arm(iter::once(pat), make::ext::expr_todo()))
+                .map(|pat| make::match_arm(iter::once(pat), None, make::ext::expr_todo()))
                 .map(|it| it.clone_for_update());
 
             let catch_all_arm = new_match_arm_list

crates/ide_assists/src/handlers/replace_if_let_with_match.rs

@@ -64,10 +64,9 @@ pub(crate) fn replace_if_let_with_match(acc: &mut Assists, ctx: &AssistContext)
                 if scrutinee_to_be_expr.syntax().text() != expr.syntax().text() {
                     // Only if all condition expressions are equal we can merge them into a match
                     return None;
-                } else {
-                    pat_seen = true;
-                    Either::Left(pat)
                 }
+                pat_seen = true;
+                Either::Left(pat)
             }
             None => Either::Right(expr),
         };
@@ -105,10 +104,15 @@ pub(crate) fn replace_if_let_with_match(acc: &mut Assists, ctx: &AssistContext)
                                 _ => None,
                             }
                             .unwrap_or_else(|| make::wildcard_pat().into());
-                            make::match_arm(iter::once(pattern), unwrap_trivial_block(else_block))
+                            make::match_arm(
+                                iter::once(pattern),
+                                None,
+                                unwrap_trivial_block(else_block),
+                            )
                         }
                         None => make::match_arm(
                             iter::once(make::wildcard_pat().into()),
+                            None,
                             make::expr_unit().into(),
                         ),
                     }
@@ -119,11 +123,11 @@ pub(crate) fn replace_if_let_with_match(acc: &mut Assists, ctx: &AssistContext)
                         let body = body.reset_indent().indent(IndentLevel(1));
                         match pat {
                             Either::Left(pat) => {
-                                make::match_arm(iter::once(pat), unwrap_trivial_block(body))
+                                make::match_arm(iter::once(pat), None, unwrap_trivial_block(body))
                             }
-                            Either::Right(expr) => make::match_arm_with_guard(
+                            Either::Right(expr) => make::match_arm(
                                 iter::once(make::wildcard_pat().into()),
-                                expr,
+                                Some(expr),
                                 unwrap_trivial_block(body),
                             ),
                         }

crates/ide_assists/src/handlers/replace_unwrap_with_match.rs

@@ -56,10 +56,11 @@ pub(crate) fn replace_unwrap_with_match(acc: &mut Assists, ctx: &AssistContext)
             let ok_tuple = make::tuple_struct_pat(ok_path, iter::once(it)).into();
 
             let bind_path = make::ext::ident_path("it");
-            let ok_arm = make::match_arm(iter::once(ok_tuple), make::expr_path(bind_path));
+            let ok_arm = make::match_arm(iter::once(ok_tuple), None, make::expr_path(bind_path));
 
             let err_arm = make::match_arm(
                 iter::once(make::wildcard_pat().into()),
+                None,
                 make::ext::expr_unreachable(),
             );
 

crates/syntax/src/ast/edit.rs

@@ -228,7 +228,7 @@ fn single_node(element: impl Into<SyntaxElement>) -> RangeInclusive<SyntaxElemen
 #[test]
 fn test_increase_indent() {
     let arm_list = {
-        let arm = make::match_arm(iter::once(make::wildcard_pat().into()), make::expr_unit());
+        let arm = make::match_arm(iter::once(make::wildcard_pat().into()), None, make::expr_unit());
         make::match_arm_list(vec![arm.clone(), arm])
     };
     assert_eq!(

crates/syntax/src/ast/make.rs

@@ -421,9 +421,16 @@ fn from_text(text: &str) -> ast::Pat {
     }
 }
 
-pub fn match_arm(pats: impl IntoIterator<Item = ast::Pat>, expr: ast::Expr) -> ast::MatchArm {
+pub fn match_arm(
+    pats: impl IntoIterator<Item = ast::Pat>,
+    guard: Option<ast::Expr>,
+    expr: ast::Expr,
+) -> ast::MatchArm {
     let pats_str = pats.into_iter().join(" | ");
-    return from_text(&format!("{} => {}", pats_str, expr));
+    return match guard {
+        Some(guard) => from_text(&format!("{} if {} => {}", pats_str, guard, expr)),
+        None => from_text(&format!("{} => {}", pats_str, expr)),
+    };
 
     fn from_text(text: &str) -> ast::MatchArm {
         ast_from_text(&format!("fn f() {{ match () {{{}}} }}", text))