Fix clippy warnings

src/backend/curses/mod.rs

@@ -75,15 +75,15 @@ where
     }
 }
 
-fn find_closest_pair(pair: &ColorPair, max_colors: i16) -> (i16, i16) {
+fn find_closest_pair(pair: ColorPair, max_colors: i16) -> (i16, i16) {
     (
-        find_closest(&pair.front, max_colors),
-        find_closest(&pair.back, max_colors),
+        find_closest(pair.front, max_colors),
+        find_closest(pair.back, max_colors),
     )
 }
 
-fn find_closest(color: &Color, max_colors: i16) -> i16 {
-    match *color {
+fn find_closest(color: Color, max_colors: i16) -> i16 {
+    match color {
         Color::TerminalDefault => -1,
         Color::Dark(BaseColor::Black) => 0,
         Color::Dark(BaseColor::Red) => 1,

src/backend/curses/n.rs

@@ -153,7 +153,7 @@ impl InputParser {
     }
 }
 
-fn find_closest_pair(pair: &ColorPair) -> (i16, i16) {
+fn find_closest_pair(pair: ColorPair) -> (i16, i16) {
     super::find_closest_pair(pair, ncurses::COLORS() as i16)
 }
 
@@ -243,7 +243,7 @@ impl Backend {
         let mut pairs = self.pairs.borrow_mut();
 
         // Find if we have this color in stock
-        let (front, back) = find_closest_pair(&pair);
+        let (front, back) = find_closest_pair(pair);
         if pairs.contains_key(&(front, back)) {
             // We got it!
             pairs[&(front, back)]

src/backend/curses/pan.rs

@@ -272,7 +272,7 @@ impl InputParser {
     }
 }
 
-fn find_closest_pair(pair: &ColorPair) -> (i16, i16) {
+fn find_closest_pair(pair: ColorPair) -> (i16, i16) {
     super::find_closest_pair(pair, pancurses::COLORS() as i16)
 }
 
@@ -334,7 +334,7 @@ impl Backend {
     /// Checks the pair in the cache, or re-define a color if needed.
     fn get_or_create(&self, pair: ColorPair) -> i32 {
         let mut pairs = self.pairs.borrow_mut();
-        let pair = find_closest_pair(&pair);
+        let pair = find_closest_pair(pair);
 
         // Find if we have this color in stock
         if pairs.contains_key(&pair) {

src/direction.rs

@@ -37,13 +37,13 @@ impl Orientation {
     ///
     /// (`Horizontal` will return the x value,
     /// and `Vertical` will return the y value.)
-    pub fn get<T: Clone>(&self, v: &XY<T>) -> T {
-        v.get(*self).clone()
+    pub fn get<T: Clone>(self, v: &XY<T>) -> T {
+        v.get(self).clone()
     }
 
     /// Returns the other orientation.
-    pub fn swap(&self) -> Self {
-        match *self {
+    pub fn swap(self) -> Self {
+        match self {
             Orientation::Horizontal => Orientation::Vertical,
             Orientation::Vertical => Orientation::Horizontal,
         }
@@ -51,8 +51,8 @@ impl Orientation {
 
     /// Returns a mutable reference to the component of the given vector
     /// corresponding to this orientation.
-    pub fn get_ref<'a, 'b, T>(&'a self, v: &'b mut XY<T>) -> &'b mut T {
-        match *self {
+    pub fn get_ref<T>(self, v: &mut XY<T>) -> &mut T {
+        match self {
             Orientation::Horizontal => &mut v.x,
             Orientation::Vertical => &mut v.y,
         }
@@ -63,8 +63,8 @@ impl Orientation {
     ///
     /// For an horizontal view, returns (Sum(x), Max(y)).
     /// For a vertical view, returns (Max(x),Sum(y)).
-    pub fn stack<'a, T: Iterator<Item = &'a Vec2>>(&self, iter: T) -> Vec2 {
-        match *self {
+    pub fn stack<'a, T: Iterator<Item = &'a Vec2>>(self, iter: T) -> Vec2 {
+        match self {
             Orientation::Horizontal => {
                 iter.fold(Vec2::zero(), |a, b| a.stack_horizontal(b))
             }
@@ -75,7 +75,7 @@ impl Orientation {
     }
 
     /// Creates a new `Vec2` with `value` in `self`'s axis.
-    pub fn make_vec(&self, main_axis: usize, second_axis: usize) -> Vec2 {
+    pub fn make_vec(self, main_axis: usize, second_axis: usize) -> Vec2 {
         let mut result = Vec2::zero();
         *self.get_ref(&mut result) = main_axis;
         *self.swap().get_ref(&mut result) = second_axis;

src/event.rs

@@ -260,8 +260,8 @@ impl MouseEvent {
     /// Returns the button used by this event, if any.
     ///
     /// Returns `None` if `self` is `WheelUp` or `WheelDown`.
-    pub fn button(&self) -> Option<MouseButton> {
-        match *self {
+    pub fn button(self) -> Option<MouseButton> {
+        match self {
             MouseEvent::Press(btn)
             | MouseEvent::Release(btn)
             | MouseEvent::Hold(btn) => Some(btn),

src/printer.rs

@@ -308,7 +308,7 @@ impl<'a, 'b> Printer<'a, 'b> {
             offset: self.offset,
             size: self.size,
             focused: self.focused,
-            theme: theme,
+            theme,
             backend: self.backend,
             output_size: self.output_size,
             content_offset: self.content_offset,

src/theme/color_pair.rs

@@ -14,7 +14,7 @@ impl ColorPair {
     /// Return an inverted color pair.
     ///
     /// With swapped front abd back color.
-    pub fn invert(&self) -> Self {
+    pub fn invert(self) -> Self {
         ColorPair {
             front: self.back,
             back: self.front,

src/theme/palette.rs

@@ -67,7 +67,7 @@ impl Palette {
     /// Returns `None` if the given key was not found.
     pub fn custom<'a>(&'a self, key: &str) -> Option<&'a Color> {
         self.custom.get(key).and_then(|node| {
-            if let &PaletteNode::Color(ref color) = node {
+            if let PaletteNode::Color(ref color) = *node {
                 Some(color)
             } else {
                 None

src/views/dialog.rs

@@ -270,9 +270,7 @@ impl Dialog {
     }
 
     /// Returns an iterator on this buttons for this dialog.
-    pub fn buttons_mut<'a>(
-        &'a mut self,
-    ) -> impl Iterator<Item = &'a mut Button> {
+    pub fn buttons_mut(&mut self) -> impl Iterator<Item = &mut Button> {
         self.buttons.iter_mut().map(|b| &mut b.button.view)
     }
 

src/views/edit_view.rs

@@ -585,10 +585,12 @@ impl View for EditView {
                     let selected = self.content[self.cursor..]
                         .graphemes(true)
                         .next()
-                        .expect(&format!(
-                            "Found no char at cursor {} in {}",
-                            self.cursor, &self.content
-                        ));
+                        .unwrap_or_else(|| {
+                            panic!(
+                                "Found no char at cursor {} in {}",
+                                self.cursor, &self.content
+                            )
+                        });
                     if self.secret {
                         make_small_stars(selected.width())
                     } else {

src/views/scroll_view.rs

@@ -245,11 +245,12 @@ where
         let offsets = self.scrollbar_thumb_offsets(lengths);
 
         // Iterate on axises, and keep the one we grabbed.
-        for (orientation, pos, length, offset) in
+        if let Some((orientation, pos, length, offset)) =
             XY::zip4(Orientation::pair(), position, lengths, offsets)
                 .keep(grabbed.and(self.enabled))
                 .into_iter()
                 .filter_map(|x| x)
+                .next()
         {
             if pos >= offset && pos < offset + length {
                 // We grabbed the thumb! Now scroll from that position.

src/xy.rs

@@ -10,6 +10,15 @@ pub struct XY<T> {
     pub y: T,
 }
 
+impl<T> IntoIterator for XY<T> {
+    type Item = T;
+    type IntoIter = iter::Chain<iter::Once<T>, iter::Once<T>>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        iter::once(self.x).chain(iter::once(self.y))
+    }
+}
+
 impl<T> XY<T> {
     /// Creates a new `XY` from the given values.
     pub fn new(x: T, y: T) -> Self {
@@ -88,11 +97,6 @@ impl<T> XY<T> {
         iter::once(&self.x).chain(iter::once(&self.y))
     }
 
-    /// Creates an iterator that returns `x`, then `y`.
-    pub fn into_iter(self) -> iter::Chain<iter::Once<T>, iter::Once<T>> {
-        iter::once(self.x).chain(iter::once(self.y))
-    }
-
     /// Returns a reference to the value on the given axis.
     pub fn get(&self, o: Orientation) -> &T {
         match o {
@@ -177,34 +181,34 @@ impl<T> XY<Option<T>> {
 
 impl XY<bool> {
     /// Returns `true` if any of `x` or `y` is `true`.
-    pub fn any(&self) -> bool {
+    pub fn any(self) -> bool {
         use std::ops::BitOr;
         self.fold(BitOr::bitor)
     }
 
     /// Returns `true` if both `x` and `y` are `true`.
-    pub fn both(&self) -> bool {
+    pub fn both(self) -> bool {
         use std::ops::BitAnd;
         self.fold(BitAnd::bitand)
     }
 
     /// For each axis, keeps elements from `other` if `self` is `true`.
-    pub fn select<T>(&self, other: XY<T>) -> XY<Option<T>> {
+    pub fn select<T>(self, other: XY<T>) -> XY<Option<T>> {
         self.zip_map(other, |keep, o| if keep { Some(o) } else { None })
     }
 
     /// For each axis, selects `if_true` if `self` is true, else `if_false`.
-    pub fn select_or<T>(&self, if_true: XY<T>, if_false: XY<T>) -> XY<T> {
+    pub fn select_or<T>(self, if_true: XY<T>, if_false: XY<T>) -> XY<T> {
         self.select(if_true).unwrap_or(if_false)
     }
 
     /// Returns a term-by-term AND operation.
-    pub fn and(&self, other: Self) -> Self {
+    pub fn and(self, other: Self) -> Self {
         self.zip_map(other, |s, o| s && o)
     }
 
     /// Returns a term-by-term OR operation.
-    pub fn or(&self, other: Self) -> Self {
+    pub fn or(self, other: Self) -> Self {
         self.zip_map(other, |s, o| s || o)
     }
 }