Fix clippy suggestions

src/alphabets.rs

@@ -31,7 +31,7 @@ pub struct Alphabet<'a> {
 
 impl<'a> Alphabet<'a> {
   fn new(letters: &'a str) -> Alphabet {
-    Alphabet { letters: letters }
+    Alphabet { letters }
   }
 
   pub fn hints(&self, matches: usize) -> Vec<String> {
@@ -44,7 +44,7 @@ impl<'a> Alphabet<'a> {
       if expansion.len() + expanded.len() >= matches {
         break;
       }
-      if expansion.len() == 0 {
+      if expansion.is_empty() {
         break;
       }
 
@@ -61,7 +61,7 @@ impl<'a> Alphabet<'a> {
     expansion = expansion
       .iter()
       .take(matches - expanded.len())
-      .map(|s| s.clone())
+      .cloned()
       .collect();
     expansion.append(&mut expanded);
     expansion

src/main.rs

@@ -11,7 +11,7 @@ use clap::crate_version;
 use std::io::{self, Read};
 
 fn app_args<'a>() -> clap::ArgMatches<'a> {
-  return App::new("thumbs")
+  App::new("thumbs")
     .version(crate_version!())
     .about("A lightning fast version copy/pasting like vimium/vimperator")
     .arg(
@@ -103,7 +103,7 @@ fn app_args<'a>() -> clap::ArgMatches<'a> {
         .long("contrast")
         .short("c"),
     )
-    .get_matches();
+    .get_matches()
 }
 
 fn main() {
@@ -136,7 +136,7 @@ fn main() {
 
   handle.read_to_string(&mut output).unwrap();
 
-  let lines = output.split("\n").collect::<Vec<&str>>();
+  let lines = output.split('\n').collect::<Vec<&str>>();
 
   let mut state = state::State::new(&lines, alphabet, &regexp);
 

src/state.rs

@@ -65,9 +65,9 @@ pub struct State<'a> {
 impl<'a> State<'a> {
   pub fn new(lines: &'a Vec<&'a str>, alphabet: &'a str, regexp: &'a Vec<&'a str>) -> State<'a> {
     State {
-      lines: lines,
-      alphabet: alphabet,
-      regexp: regexp,
+      lines,
+      alphabet,
+      regexp,
     }
   }
 
@@ -131,7 +131,7 @@ impl<'a> State<'a> {
             }
 
             chunk = chunk.get(matching.end()..).expect("Unknown chunk");
-            offset = offset + matching.end() as i32;
+            offset += matching.end() as i32;
           } else {
             panic!("No matching?");
           }
@@ -175,7 +175,7 @@ impl<'a> State<'a> {
       matches.reverse();
     }
 
-    return matches;
+    matches
   }
 }
 

src/swapper.rs

@@ -69,17 +69,17 @@ impl<'a> Swapper<'a> {
     let signal = format!("thumbs-finished-{}", since_the_epoch.as_secs());
 
     Swapper {
-      executor: executor,
-      dir: dir,
-      command: command,
-      upcase_command: upcase_command,
+      executor,
+      dir,
+      command,
+      upcase_command,
       active_pane_id: None,
       active_pane_height: None,
       active_pane_scroll_position: None,
       active_pane_in_copy_mode: None,
       thumbs_pane_id: None,
       content: None,
-      signal: signal,
+      signal,
     }
   }
 
@@ -95,33 +95,31 @@ impl<'a> Swapper<'a> {
       .executor
       .execute(active_command.iter().map(|arg| arg.to_string()).collect());
 
-    let lines: Vec<&str> = output.split("\n").collect();
+    let lines: Vec<&str> = output.split('\n').collect();
     let chunks: Vec<Vec<&str>> = lines
       .into_iter()
-      .map(|line| line.split(":").collect())
+      .map(|line| line.split(':').collect())
       .collect();
 
     let active_pane = chunks
       .iter()
-      .find(|&chunks| *chunks.iter().nth(4).unwrap() == "active")
+      .find(|&chunks| *chunks.get(4).unwrap() == "active")
       .expect("Unable to find active pane");
 
-    let pane_id = active_pane.iter().nth(0).unwrap();
-    let pane_in_copy_mode = active_pane.iter().nth(1).unwrap().to_string();
+    let pane_id = active_pane.get(0).unwrap();
+    let pane_in_copy_mode = active_pane.get(1).unwrap().to_string();
 
     self.active_pane_id = Some(pane_id.to_string());
     self.active_pane_in_copy_mode = Some(pane_in_copy_mode);
 
     if self.active_pane_in_copy_mode.clone().unwrap() == "1" {
       let pane_height = active_pane
-        .iter()
-        .nth(2)
+        .get(2)
         .unwrap()
         .parse()
         .expect("Unable to retrieve pane height");
       let pane_scroll_position = active_pane
-        .iter()
-        .nth(3)
+        .get(3)
         .unwrap()
         .parse()
         .expect("Unable to retrieve pane scroll");
@@ -135,7 +133,7 @@ impl<'a> Swapper<'a> {
     let options_command = vec!["tmux", "show", "-g"];
     let params: Vec<String> = options_command.iter().map(|arg| arg.to_string()).collect();
     let options = self.executor.execute(params);
-    let lines: Vec<&str> = options.split("\n").collect();
+    let lines: Vec<&str> = options.split('\n').collect();
 
     let pattern = Regex::new(r#"@thumbs-([\w\-0-9]+) "(.*)""#).unwrap();
 
@@ -149,7 +147,7 @@ impl<'a> Swapper<'a> {
           let boolean_params = vec!["reverse", "unique", "contrast"];
 
           if boolean_params.iter().any(|&x| x == name) {
-            return vec![format!("--{}", name).to_string()];
+            return vec![format!("--{}", name)];
           }
 
           let string_params = vec![
@@ -164,13 +162,13 @@ impl<'a> Swapper<'a> {
 
           if string_params.iter().any(|&x| x == name) {
             return vec![
-              format!("--{}", name).to_string(),
-              format!("'{}'", value).to_string(),
+              format!("--{}", name),
+              format!("'{}'", value),
             ];
           }
 
           if name.starts_with("regexp") {
-            return vec!["--regexp".to_string(), format!("'{}'", value).to_string()];
+            return vec!["--regexp".to_string(), format!("'{}'", value)];
           }
 
           vec![]
@@ -298,7 +296,7 @@ mod tests {
     fn new(outputs: Vec<String>) -> TestShell {
       TestShell {
         executed: None,
-        outputs: outputs,
+        outputs,
       }
     }
   }
@@ -356,8 +354,9 @@ mod tests {
     assert_eq!(executor.last_executed().unwrap(), expectation);
   }
 }
+
 fn app_args<'a>() -> clap::ArgMatches<'a> {
-  return App::new("tmux-thumbs")
+  App::new("tmux-thumbs")
     .version(crate_version!())
     .about("A lightning fast version of tmux-fingers, copy/pasting tmux like vimium/vimperator")
     .arg(
@@ -378,7 +377,7 @@ fn app_args<'a>() -> clap::ArgMatches<'a> {
         .long("upcase-command")
         .default_value("tmux set-buffer {} && tmux paste-buffer"),
     )
-    .get_matches();
+    .get_matches()
 }
 
 fn main() -> std::io::Result<()> {

src/view.rs

@@ -36,42 +36,40 @@ impl<'a> View<'a> {
     hint_background_color: Color,
   ) -> View<'a> {
     View {
-      state: state,
+      state,
       skip: 0,
-      multi: multi,
-      reverse: reverse,
-      unique: unique,
-      contrast: contrast,
-      position: position,
-      select_foreground_color: select_foreground_color,
-      select_background_color: select_background_color,
-      foreground_color: foreground_color,
-      background_color: background_color,
-      hint_foreground_color: hint_foreground_color,
-      hint_background_color: hint_background_color,
+      multi,
+      reverse,
+      unique,
+      contrast,
+      position,
+      select_foreground_color,
+      select_background_color,
+      foreground_color,
+      background_color,
+      hint_foreground_color,
+      hint_background_color,
     }
   }
 
   pub fn prev(&mut self) {
     if self.skip > 0 {
-      self.skip = self.skip - 1;
+      self.skip -= 1;
     }
   }
 
   pub fn next(&mut self, maximum: usize) {
     if self.skip < maximum {
-      self.skip = self.skip + 1;
+      self.skip += 1;
     }
   }
 
   fn make_hint_text(&self, hint: &str) -> String {
-    let text = if self.contrast {
-      format!("[{}]", hint).to_string()
+    if self.contrast {
+      format!("[{}]", hint)
     } else {
       hint.to_string()
-    };
-
-    text
+    }
   }
 
   pub fn present(&mut self) -> Vec<(String, bool)> {
@@ -88,8 +86,7 @@ impl<'a> View<'a> {
       .iter()
       .filter_map(|m| m.hint.clone())
       .max_by(|x, y| x.len().cmp(&y.len()))
-      .unwrap()
-      .clone();
+      .unwrap();
     let mut selected;
     let mut chosen = vec![];
 
@@ -102,7 +99,7 @@ impl<'a> View<'a> {
       for (index, line) in self.state.lines.iter().enumerate() {
         let clean = line.trim_end_matches(|c: char| c.is_whitespace());
 
-        if clean.len() > 0 {
+        if !clean.is_empty() {
           let text = self.make_hint_text(line);
 
           rustbox.print(