Migrate replace_is_method_with_if_let_method Assist to use SyntaxFactory

Signed-off-by: Hayashi Mikihiro <34ttrweoewiwe28@gmail.com>

Author: Hmikihiro

src/tools/rust-analyzer/crates/ide-assists/src/handlers/replace_is_method_with_if_let_method.rs

@@ -1,8 +1,5 @@
 use ide_db::syntax_helpers::suggest_name;
-use syntax::{
-    ast::{self, AstNode, make},
-    ted,
-};
+use syntax::ast::{self, AstNode, syntax_factory::SyntaxFactory};
 
 use crate::{AssistContext, AssistId, Assists};
 
@@ -60,21 +57,24 @@ pub(crate) fn replace_is_method_with_if_let_method(
                 message,
                 call_expr.syntax().text_range(),
                 |edit| {
-                    let call_expr = edit.make_mut(call_expr);
-
-                    let var_pat = make::ident_pat(false, false, make::name(&var_name));
-                    let pat = make::tuple_struct_pat(make::ext::ident_path(text), [var_pat.into()]);
-                    let let_expr = make::expr_let(pat.into(), receiver).clone_for_update();
-
-                    if let Some(cap) = ctx.config.snippet_cap {
-                        if let Some(ast::Pat::TupleStructPat(pat)) = let_expr.pat() {
-                            if let Some(first_var) = pat.fields().next() {
-                                edit.add_placeholder_snippet(cap, first_var);
-                            }
-                        }
+                    let make = SyntaxFactory::with_mappings();
+                    let mut editor = edit.make_editor(call_expr.syntax());
+
+                    let var_pat = make.ident_pat(false, false, make.name(&var_name));
+                    let pat = make.tuple_struct_pat(make.ident_path(text), [var_pat.into()]);
+                    let let_expr = make.expr_let(pat.into(), receiver);
+
+                    if let Some(cap) = ctx.config.snippet_cap
+                        && let Some(ast::Pat::TupleStructPat(pat)) = let_expr.pat()
+                        && let Some(first_var) = pat.fields().next()
+                    {
+                        let placeholder = edit.make_placeholder_snippet(cap);
+                        editor.add_annotation(first_var.syntax(), placeholder);
                     }
 
-                    ted::replace(call_expr.syntax(), let_expr.syntax());
+                    editor.replace(call_expr.syntax(), let_expr.syntax());
+                    editor.add_mappings(make.finish_with_mappings());
+                    edit.add_file_edits(ctx.vfs_file_id(), editor);
                 },
             )
         }