slightly change code formatting

src/document.rs

@@ -28,15 +28,19 @@ impl Document {
             file_type
         })
     }
+
     pub fn row(&self, index: usize) -> Option<&Row> {
         self.rows.get(index)
     }
+
     pub fn is_empty(&self) -> bool {
         self.rows.is_empty()
     }
+
     pub fn len(&self) -> usize {
         self.rows.len()
     }
+
     pub fn insert(&mut self, at: &Position, c: char) {
         if at.y > self.rows.len() {
             return;
@@ -56,21 +60,27 @@ impl Document {
         self.unhighlight_rows(at.y);
     }
 
-    fn unhighlight_rows(&mut self, start: usize) {
-        let start = start.saturating_sub(1);
-        for row in self.rows.iter_mut().skip(start) {
-            row.is_highlighted = false;
+    fn insert_newline(&mut self, at: &Position) {
+        if at.y > self.rows.len() {
+            return;
+        }
+        if at.y == self.rows.len() {
+            self.rows.push(Row::default());
+            return;
         }
+        #[allow(clippy::indexing_slicing)]
+        let current_row = &mut self.rows[at.y];
+        let new_row = current_row.split(at.x);
+        self.rows.insert(at.y + 1, new_row);
     }
-
+  
     #[allow(clippy::indexing_slicing)]
     pub fn delete(&mut self, at: &Position) {
         let len = self.rows.len();
         if at.y >= len {
             return;
         }
         self.dirty = true;
-
         if at.x == self.rows[at.y].len() && at.y + 1 < len {
             let next_row = self.rows.remove(at.y + 1);
             let row = &mut self.rows[at.y];
@@ -81,19 +91,7 @@ impl Document {
         }
         self.unhighlight_rows(at.y)
     }
-    fn insert_newline(&mut self, at: &Position) {
-        if at.y > self.rows.len() {
-            return;
-        }
-        if at.y == self.rows.len() {
-            self.rows.push(Row::default());
-            return;
-        }
-        #[allow(clippy::indexing_slicing)]
-        let current_row = &mut self.rows[at.y];
-        let new_row = current_row.split(at.x);
-        self.rows.insert(at.y + 1, new_row);
-    }
+
     pub fn save(&mut self) -> Result<(), Error> {
         if let Some(file_name) = &self.file_name {
             let mut file = fs::File::create(file_name)?;
@@ -106,28 +104,27 @@ impl Document {
         }
         Ok(())
     }
+
     pub fn is_dirty(&self) -> bool {
         self.dirty
     }
+
     #[allow(clippy::indexing_slicing)]
     pub fn find(&self, query: &str, at: &Position, direction: SearchDirection) -> Option<Position> {
         if at.y >= self.rows.len() {
             return None;
         }
-        let mut position = Position{x: at.x, y: at.y};
-
+        let mut position = Position { x: at.x, y: at.y };
         let start = if direction == SearchDirection::Forward {
             at.y
         } else {
             0
         };
-
         let end = if direction == SearchDirection::Forward {
             self.rows.len()
         } else {
             at.y.saturating_add(1)
         };
-
         for _ in start..end {
             if let Some(row) = self.rows.get(position.y) {
                 if let Some(x) = row.find(&query, position.x, direction) {
@@ -147,6 +144,7 @@ impl Document {
         }
         None
     }
+
     pub fn highlight(&mut self, word: &Option<String>, until: Option<usize>) {
         let mut start_with_comment = false;
         let until = if let Some(until) = until {
@@ -163,6 +161,14 @@ impl Document {
             start_with_comment = row.highlight(&self.file_type.highlighting_options(), word, start_with_comment);
         }
     }
+
+    fn unhighlight_rows(&mut self, start: usize) {
+        let start = start.saturating_sub(1);
+        for row in self.rows.iter_mut().skip(start) {
+            row.is_highlighted = false;
+        }
+    }
+
     pub fn file_type(&self) -> String {
         self.file_type.name()
     }

src/editor.rs

@@ -66,6 +66,7 @@ impl Editor {
             }
         }
     }
+
     pub fn default() -> Self {
         let args: Vec<String> = env::args().collect();
         let mut initial_status = String::from("HELP: Ctrl-F = find | Ctrl-S = save | Ctrl-Q = quit");
@@ -112,6 +113,7 @@ impl Editor {
         Terminal::cursor_show();
         Terminal::flush()
     }
+
     fn process_keypress(&mut self) -> Result<(), std::io::Error> {
         let pressed_key = Terminal::read_key()?;
         match pressed_key {
@@ -156,13 +158,15 @@ impl Editor {
         }
         Ok(())
     }
+
     pub fn draw_row(&self, row: &Row) {
         let width = self.terminal.size().width as usize;
         let start = self.offset.x;
         let end = self.offset.x.saturating_add(width);
         let row = row.render(start, end);
         println!("{}\r", row)
     }
+
     #[allow(clippy::integer_division)]
     fn draw_rows(&self) {
         let height = self.terminal.size().height;
@@ -180,6 +184,7 @@ impl Editor {
             }
         }
     }
+
     fn draw_welcome_message(&self) {
         let mut welcome_message = format!("Artem's editor -- version {}\r", VERSION);
         let width = self.terminal.size().width as usize;
@@ -191,6 +196,7 @@ impl Editor {
         welcome_message.truncate(width);
         println!("{}\r", welcome_message);
     }
+
     fn move_cursor(&mut self, key: Key) {
         let terminal_height = self.terminal.size().height as usize;
         let Position{ mut x, mut y } = self.cursor_position;
@@ -258,6 +264,7 @@ impl Editor {
 
         self.cursor_position = Position{ x, y }
     }
+
     fn scroll(&mut self) {
         let Position {x, y} = self.cursor_position;
         let width = self.terminal.size().width as usize;
@@ -276,6 +283,7 @@ impl Editor {
             offset.x = x.saturating_sub(width).saturating_add(1);
         }
     }
+
     fn draw_status_bar(&self) {
         let mut status;
         let width = self.terminal.size().width as usize;
@@ -312,6 +320,7 @@ impl Editor {
         Terminal::reset_fg_color();
         Terminal::reset_bg_color();
     }
+
     fn draw_message_bar(&self) {
         Terminal::clear_current_line();
         let message = &self.status_message;
@@ -321,6 +330,7 @@ impl Editor {
             print!("{}", text);
         }
     }
+
     fn prompt<C>(&mut self, prompt: &str, mut callback: C) -> Result<Option<String>, std::io::Error> 
     where 
         C: FnMut(&mut Self, Key, &String),
@@ -352,6 +362,7 @@ impl Editor {
         }
         Ok(Some(result))
     }
+
     fn save(&mut self) {
         if self.document.file_name.is_none() {
             let new_name = self.prompt("Save as: ", |_, _, _| {}).unwrap_or(None);
@@ -368,6 +379,7 @@ impl Editor {
             self.status_message = StatusMessage::from("Error writing file!".to_string());
         }
     }
+
     fn search(&mut self) {
         let old_position = self.cursor_position.clone();
         let mut direction = SearchDirection::Forward;

src/filetype.rs

@@ -27,9 +27,11 @@ impl FileType {
     pub fn name(&self) -> String {
         self.name.clone()
     }
+
     pub fn highlighting_options(&self) -> &HighlightingOptions {
         &self.hl_opts
     }
+
     pub fn from(file_name: &str) -> Self {
         if file_name.ends_with(".rs") {
             return Self {
@@ -120,21 +122,27 @@ impl HighlightingOptions {
     pub fn numbers(&self) -> bool {
         self.numbers
     }
+
     pub fn strings(&self) -> bool {
         self.strings
     }
+
     pub fn characters(&self) -> bool {
         self.characters
     }
+
     pub fn comments(&self) -> bool {
         self.comments
     }
+
     pub fn primary_keywords(&self) -> &Vec<String> {
         &self.primary_keywords
     }
+
     pub fn secondary_keywords(&self) -> &Vec<String> {
         &self.secondary_keywords
     }
+
     pub fn multiline_comments(&self) -> bool {
         self.multiline_comments
     }

src/main.rs

@@ -7,16 +7,18 @@
     clippy::wildcard_enum_match_arm,
     clippy::else_if_without_else
 )]
+
 mod document;
 mod editor;
 mod filetype;
 mod row;
 mod terminal;
 mod highlighting;
+
+use editor::Editor;
 pub use document::Document;
 pub use row::Row;
 pub use editor::SearchDirection;
-use editor::Editor;
 pub use filetype::FileType;
 pub use filetype::HighlightingOptions;
 pub use terminal::Terminal;

src/row.rs

@@ -52,12 +52,15 @@ impl Row {
         result.push_str(&end_highlight[..]);
         result
     }
+
     pub fn len(&self) -> usize {
         self.len
     }
+
     pub fn is_empty(&self) -> bool {
         self.len == 0
     }
+
     pub fn insert(&mut self, at: usize, c: char) {
         if at >= self.len() {
             self.string.push(c);
@@ -77,6 +80,7 @@ impl Row {
         self.len = length;
         self.string = result;
     }
+
     pub fn delete(&mut self, at: usize) {
         if at >= self.len() {
             return;
@@ -92,10 +96,12 @@ impl Row {
         self.len = length;
         self.string = result;
     }
+
     pub fn append(&mut self, new: &Self) {
         self.string = format!("{}{}", self.string, new.string);
         self.len += new.len;
     }
+
     pub fn split(&mut self, at: usize) -> Self {
         let mut row: String = String::new();
         let mut length = 0;
@@ -120,9 +126,11 @@ impl Row {
             is_highlighted: false
         }
     }
+
     pub fn as_bytes(&self) -> &[u8] {
         self.string.as_bytes()
     }
+
     pub fn find(&self, query: &str, at: usize, direction: SearchDirection) -> Option<usize> {
         if at > self.len || query.is_empty() {
             return None;
@@ -230,6 +238,7 @@ impl Row {
             highlighting::Type::PrimaryKeywords,
         )
     }
+
     fn highlight_secondary_keywords(&mut self, index: &mut usize, opts: &HighlightingOptions, chars: &[char]) -> bool {
         self.highlight_keywords(
             index,