From 70930d3bb2ba1d4a7a7d4a489da714096294acca Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Thu, 21 May 2020 00:03:42 +0200
Subject: Remove set_cursor

---
 crates/ra_assists/src/assist_context.rs        | 20 +++-----------------
 crates/ra_assists/src/handlers/unwrap_block.rs | 24 ++++++++++--------------
 2 files changed, 13 insertions(+), 31 deletions(-)

diff --git a/crates/ra_assists/src/assist_context.rs b/crates/ra_assists/src/assist_context.rs
index 005c17776..9f6ca449b 100644
--- a/crates/ra_assists/src/assist_context.rs
+++ b/crates/ra_assists/src/assist_context.rs
@@ -171,19 +171,13 @@ impl Assists {
 
 pub(crate) struct AssistBuilder {
     edit: TextEditBuilder,
-    cursor_position: Option<TextSize>,
     file: FileId,
     is_snippet: bool,
 }
 
 impl AssistBuilder {
     pub(crate) fn new(file: FileId) -> AssistBuilder {
-        AssistBuilder {
-            edit: TextEditBuilder::default(),
-            cursor_position: None,
-            file,
-            is_snippet: false,
-        }
+        AssistBuilder { edit: TextEditBuilder::default(), file, is_snippet: false }
     }
 
     /// Remove specified `range` of text.
@@ -241,10 +235,6 @@ impl AssistBuilder {
         algo::diff(&node, &new).into_text_edit(&mut self.edit)
     }
 
-    /// Specify desired position of the cursor after the assist is applied.
-    pub(crate) fn set_cursor(&mut self, offset: TextSize) {
-        self.cursor_position = Some(offset)
-    }
     // FIXME: better API
     pub(crate) fn set_file(&mut self, assist_file: FileId) {
         self.file = assist_file;
@@ -258,12 +248,8 @@ impl AssistBuilder {
 
     fn finish(self, change_label: String) -> SourceChange {
         let edit = self.edit.finish();
-        if edit.is_empty() && self.cursor_position.is_none() {
-            panic!("Only call `add_assist` if the assist can be applied")
-        }
-        let mut res =
-            SingleFileChange { label: change_label, edit, cursor_position: self.cursor_position }
-                .into_source_change(self.file);
+        let mut res = SingleFileChange { label: change_label, edit, cursor_position: None }
+            .into_source_change(self.file);
         if self.is_snippet {
             res.is_snippet = true;
         }
diff --git a/crates/ra_assists/src/handlers/unwrap_block.rs b/crates/ra_assists/src/handlers/unwrap_block.rs
index b76182d79..8440c7d0f 100644
--- a/crates/ra_assists/src/handlers/unwrap_block.rs
+++ b/crates/ra_assists/src/handlers/unwrap_block.rs
@@ -62,7 +62,6 @@ pub(crate) fn unwrap_block(acc: &mut Assists, ctx: &AssistContext) -> Option<()>
                             let range_to_del_else_if = TextRange::new(ancestor_then_branch.syntax().text_range().end(), l_curly_token.text_range().start());
                             let range_to_del_rest = TextRange::new(then_branch.syntax().text_range().end(), if_expr.syntax().text_range().end());
 
-                            edit.set_cursor(ancestor_then_branch.syntax().text_range().end());
                             edit.delete(range_to_del_rest);
                             edit.delete(range_to_del_else_if);
                             edit.replace(target, update_expr_string(then_branch.to_string(), &[' ', '{']));
@@ -79,7 +78,6 @@ pub(crate) fn unwrap_block(acc: &mut Assists, ctx: &AssistContext) -> Option<()>
                                 return acc.add(assist_id, assist_label, target, |edit| {
                                     let range_to_del = TextRange::new(then_branch.syntax().text_range().end(), l_curly_token.text_range().start());
 
-                                    edit.set_cursor(then_branch.syntax().text_range().end());
                                     edit.delete(range_to_del);
                                     edit.replace(target, update_expr_string(else_block.to_string(), &[' ', '{']));
                                 });
@@ -97,8 +95,6 @@ pub(crate) fn unwrap_block(acc: &mut Assists, ctx: &AssistContext) -> Option<()>
 
     let target = expr_to_unwrap.syntax().text_range();
     acc.add(assist_id, assist_label, target, |edit| {
-        edit.set_cursor(expr.syntax().text_range().start());
-
         edit.replace(
             expr.syntax().text_range(),
             update_expr_string(expr_to_unwrap.to_string(), &[' ', '{', '\n']),
@@ -154,7 +150,7 @@ mod tests {
             r#"
             fn main() {
                 bar();
-                <|>foo();
+                foo();
 
                 //comment
                 bar();
@@ -188,7 +184,7 @@ mod tests {
 
                     //comment
                     bar();
-                }<|>
+                }
                 println!("bar");
             }
             "#,
@@ -222,7 +218,7 @@ mod tests {
 
                     //comment
                     //bar();
-                }<|>
+                }
                 println!("bar");
             }
             "#,
@@ -258,7 +254,7 @@ mod tests {
                     //bar();
                 } else if false {
                     println!("bar");
-                }<|>
+                }
                 println!("foo");
             }
             "#,
@@ -298,7 +294,7 @@ mod tests {
                     println!("bar");
                 } else if true {
                     println!("foo");
-                }<|>
+                }
                 println!("else");
             }
             "#,
@@ -336,7 +332,7 @@ mod tests {
                     //bar();
                 } else if false {
                     println!("bar");
-                }<|>
+                }
                 println!("foo");
             }
             "#,
@@ -383,7 +379,7 @@ mod tests {
             "#,
             r#"
             fn main() {
-                <|>if true {
+                if true {
                     foo();
 
                     //comment
@@ -417,7 +413,7 @@ mod tests {
             r#"
             fn main() {
                 for i in 0..5 {
-                    <|>foo();
+                    foo();
 
                     //comment
                     bar();
@@ -447,7 +443,7 @@ mod tests {
             "#,
             r#"
             fn main() {
-                <|>if true {
+                if true {
                     foo();
 
                     //comment
@@ -480,7 +476,7 @@ mod tests {
             "#,
             r#"
             fn main() {
-                <|>if true {
+                if true {
                     foo();
 
                     //comment
-- 
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