fix some clippy warnings

[nihav.git] / nihav-core / src / formats.rs

diff --git a/nihav-core/src/formats.rs b/nihav-core/src/formats.rs
index 3501cb065ae8b8f85afd104c0598bffc1c55129c..c0027ece05379a24a3c1e19deae0daf59277006e 100644 (file)
--- a/nihav-core/src/formats.rs
+++ b/nihav-core/src/formats.rs
@@ -148,35 +148,29 @@ pub enum NAChannelType {
 impl NAChannelType {
     /// Reports whether this is some center channel.
     pub fn is_center(self) -> bool {
-        match self {
-            NAChannelType::C => true,   NAChannelType::Ch => true,
-            NAChannelType::Cl => true,  NAChannelType::Ov => true,
-            NAChannelType::LFE => true, NAChannelType::LFE2 => true,
-            NAChannelType::Cs => true,  NAChannelType::Chs => true,
-            _ => false,
-        }
+        matches!(self,
+            NAChannelType::C   | NAChannelType::Ch |
+            NAChannelType::Cl  | NAChannelType::Ov |
+            NAChannelType::LFE | NAChannelType::LFE2 |
+            NAChannelType::Cs  | NAChannelType::Chs)
     }
     /// Reports whether this is some left channel.
     pub fn is_left(self) -> bool {
-        match self {
-            NAChannelType::L   => true, NAChannelType::Ls => true,
-            NAChannelType::Lss => true, NAChannelType::Lc => true,
-            NAChannelType::Lh  => true, NAChannelType::Lw => true,
-            NAChannelType::Lhs => true, NAChannelType::Ll => true,
-            NAChannelType::Lt  => true, NAChannelType::Lo => true,
-            _ => false,
-        }
+        matches!(self,
+            NAChannelType::L   | NAChannelType::Ls |
+            NAChannelType::Lss | NAChannelType::Lc |
+            NAChannelType::Lh  | NAChannelType::Lw |
+            NAChannelType::Lhs | NAChannelType::Ll |
+            NAChannelType::Lt  | NAChannelType::Lo)
     }
     /// Reports whether this is some right channel.
     pub fn is_right(self) -> bool {
-        match self {
-            NAChannelType::R   => true, NAChannelType::Rs => true,
-            NAChannelType::Rss => true, NAChannelType::Rc => true,
-            NAChannelType::Rh  => true, NAChannelType::Rw => true,
-            NAChannelType::Rhs => true, NAChannelType::Rl => true,
-            NAChannelType::Rt  => true, NAChannelType::Ro => true,
-            _ => false,
-        }
+        matches!(self,
+            NAChannelType::R   | NAChannelType::Rs |
+            NAChannelType::Rss | NAChannelType::Rc |
+            NAChannelType::Rh  | NAChannelType::Rw |
+            NAChannelType::Rhs | NAChannelType::Rl |
+            NAChannelType::Rt  | NAChannelType::Ro)
     }
 }
 
@@ -400,17 +394,11 @@ impl ColorModel {
     }
     /// Reports whether the current colour model is RGB.
     pub fn is_rgb(self) -> bool {
-        match self {
-            ColorModel::RGB(_) => true,
-            _ => false,
-        }
+        matches!(self, ColorModel::RGB(_))
     }
     /// Reports whether the current colour model is YUV.
     pub fn is_yuv(self) -> bool {
-        match self {
-            ColorModel::YUV(_) => true,
-            _ => false,
-        }
+        matches!(self, ColorModel::YUV(_))
     }
     /// Returns short name for the current colour mode.
     pub fn get_short_name(self) -> &'static str {
@@ -428,8 +416,8 @@ impl ColorModel {
 impl fmt::Display for ColorModel {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let name = match *self {
-            ColorModel::RGB(fmt) => format!("RGB({})", fmt).to_string(),
-            ColorModel::YUV(fmt) => format!("YUV({})", fmt).to_string(),
+            ColorModel::RGB(fmt) => format!("RGB({})", fmt),
+            ColorModel::YUV(fmt) => format!("YUV({})", fmt),
             ColorModel::CMYK     => "CMYK".to_string(),
             ColorModel::HSV      => "HSV".to_string(),
             ColorModel::LAB      => "LAB".to_string(),
@@ -710,7 +698,7 @@ impl NAPixelFormaton {
         }
         ssamp
     }
-    #[allow(clippy::cyclomatic_complexity)]
+    #[allow(clippy::cognitive_complexity)]
     /// Returns a short string description of the format if possible.
     pub fn to_short_string(&self) -> Option<String> {
         match self.model {
@@ -1029,7 +1017,7 @@ fn parse_yuv_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> {
     let mut parse_end = components as usize;
     for ch in s.chars().skip(components as usize) {
         parse_end += 1;
-        if ch >= '0' && ch <= '9' {
+        if ('0'..='9').contains(&ch) {
             format = format * 10 + u32::from((ch as u8) - b'0');
             if format > 444 { return Err(FormatParseError {}); }
         } else {
@@ -1041,7 +1029,7 @@ fn parse_yuv_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> {
     let depth = if s.len() == parse_end { 8 } else {
             let mut val = 0;
             for ch in s.chars().skip(parse_end) {
-                if ch >= '0' && ch <= '9' {
+                if ('0'..='9').contains(&ch) {
                     val = val * 10 + ((ch as u8) - b'0');
                     if val > 16 { return Err(FormatParseError {}); }
                 } else {
@@ -1065,8 +1053,8 @@ fn parse_yuv_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> {
             444 => [[0, 0], [0, 0], [0, 0], [0, 0]],
             _ => return Err(FormatParseError {}),
         };
-    for (chro, ss) in chromatons.iter_mut().take(components as usize).zip(subsamp.iter()) {
-        *chro = Some(NAPixelChromaton{ h_ss: ss[0], v_ss: ss[1], packed: !is_planar, depth, shift: 0, comp_offs: next_elem, next_elem });
+    for (i, (chro, ss)) in chromatons.iter_mut().take(components as usize).zip(subsamp.iter()).enumerate() {
+        *chro = Some(NAPixelChromaton{ h_ss: ss[0], v_ss: ss[1], packed: !is_planar, depth, shift: 0, comp_offs: if is_planar { i as u8 } else { next_elem }, next_elem });
     }
     Ok(NAPixelFormaton { model: ColorModel::YUV(YUVSubmodel::YUVJ),
                          components,
@@ -1078,6 +1066,7 @@ fn parse_yuv_format(s: &str) -> Result<NAPixelFormaton, FormatParseError> {
 impl FromStr for NAPixelFormaton {
     type Err = FormatParseError;
 
+    #[allow(clippy::single_match)]
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         match s {
             "pal8" => return Ok(PAL8_FORMAT),