Fix clippy warnings.

rustfmt.toml

@@ -1,2 +1,3 @@
 max_width = 120
 use_small_heuristics = "Max"
+use_field_init_shorthand = true

src/bits.rs

@@ -22,7 +22,7 @@ pub struct Bits {
 impl Bits {
     /// Constructs a new, empty bits structure.
     pub fn new(version: Version) -> Self {
-        Self { data: Vec::new(), bit_offset: 0, version: version }
+        Self { data: Vec::new(), bit_offset: 0, version }
     }
 
     /// Pushes an N-bit big-endian integer to the end of the bits.
@@ -255,7 +255,7 @@ impl Bits {
                 self.push_number(2, 0b10);
                 self.push_number(14, eci_designator.as_u16());
             }
-            16384...999999 => {
+            16384...999_999 => {
                 self.push_number(3, 0b110);
                 self.push_number(5, (eci_designator >> 16).as_u16());
                 self.push_number(16, (eci_designator & 0xffff).as_u16());
@@ -688,7 +688,7 @@ impl Bits {
         }
 
         if self.len() < data_length {
-            const PADDING_BYTES: &'static [u8] = &[0b11101100, 0b00010001];
+            const PADDING_BYTES: &[u8] = &[0b1110_1100, 0b0001_0001];
 
             self.bit_offset = 0;
             let data_bytes_length = data_length / 8;

src/canvas.rs

@@ -93,12 +93,7 @@ impl Canvas {
     /// Constructs a new canvas big enough for a QR code of the given version.
     pub fn new(version: Version, ec_level: EcLevel) -> Self {
         let width = version.width();
-        Self {
-            width: width,
-            version: version,
-            ec_level: ec_level,
-            modules: vec![Module::Empty; (width * width).as_usize()],
-        }
+        Self { width, version, ec_level, modules: vec![Module::Empty; (width * width).as_usize()] }
     }
 
     /// Converts the canvas into a human-readable string.
@@ -1149,7 +1144,7 @@ impl DataModuleIter {
         Self {
             x: width - 1,
             y: width - 1,
-            width: width,
+            width,
             timing_pattern_column: match version {
                 Version::Micro(_) => 0,
                 Version::Normal(_) => 6,

src/lib.rs

@@ -31,12 +31,16 @@
 
 #![cfg_attr(feature = "bench", feature(test, external_doc))] // Unstable libraries
 #![cfg_attr(feature = "cargo-clippy", deny(warnings, clippy_pedantic))]
-#![cfg_attr(feature = "cargo-clippy",
-            allow(unreadable_literal, missing_docs_in_private_items, shadow_reuse,
-                  range_plus_one))]
-
+#![cfg_attr(
+    feature = "cargo-clippy",
+    allow(
+        indexing_slicing,
+        write_literal, // see https://github.com/rust-lang-nursery/rust-clippy/issues/2976
+    )
+)]
 #![cfg_attr(feature = "bench", doc(include = "../README.md"))]
 // ^ make sure we can test our README.md.
+#![cfg_attr(feature = "cargo-clippy", allow())]
 
 extern crate checked_int_cast;
 #[cfg(feature = "image")]
@@ -147,12 +151,7 @@ impl QrCode {
         canvas.draw_all_functional_patterns();
         canvas.draw_data(&*encoded_data, &*ec_data);
         let canvas = canvas.apply_best_mask();
-        Ok(Self {
-            content: canvas.into_colors(),
-            version: version,
-            ec_level: ec_level,
-            width: version.width().as_usize(),
-        })
+        Ok(Self { content: canvas.into_colors(), version, ec_level, width: version.width().as_usize() })
     }
 
     /// Gets the version of this QR code.

src/optimize.rs

@@ -271,14 +271,14 @@ impl<I: Iterator<Item = Segment>> Optimizer<I> {
                 parser: segments,
                 last_segment: Segment { mode: Mode::Numeric, begin: 0, end: 0 },
                 last_segment_size: 0,
-                version: version,
+                version,
                 ended: true,
             },
             Some(segment) => Self {
                 parser: segments,
                 last_segment: segment,
                 last_segment_size: segment.encoded_len(version),
-                version: version,
+                version,
                 ended: false,
             },
         }

src/types.rs

@@ -129,8 +129,8 @@ pub enum Version {
 impl Version {
     /// Get the number of "modules" on each size of the QR code, i.e. the width
     /// and height of the code.
-    pub fn width(&self) -> i16 {
-        match *self {
+    pub fn width(self) -> i16 {
+        match self {
             Version::Normal(v) => v * 4 + 17,
             Version::Micro(v) => v * 2 + 9,
         }
@@ -146,11 +146,11 @@ impl Version {
     ///
     /// If the entry compares equal to the default value of T, this method
     /// returns `Err(QrError::InvalidVersion)`.
-    pub fn fetch<T>(&self, ec_level: EcLevel, table: &[[T; 4]]) -> QrResult<T>
+    pub fn fetch<T>(self, ec_level: EcLevel, table: &[[T; 4]]) -> QrResult<T>
     where
         T: PartialEq + Default + Copy,
     {
-        match *self {
+        match self {
             Version::Normal(v @ 1...40) => {
                 return Ok(table[(v - 1).as_usize()][ec_level as usize]);
             }
@@ -166,16 +166,16 @@ impl Version {
     }
 
     /// The number of bits needed to encode the mode indicator.
-    pub fn mode_bits_count(&self) -> usize {
-        match *self {
+    pub fn mode_bits_count(self) -> usize {
+        match self {
             Version::Micro(a) => (a - 1).as_usize(),
             _ => 4,
         }
     }
 
     /// Checks whether is version refers to a Micro QR code.
-    pub fn is_micro(&self) -> bool {
-        match *self {
+    pub fn is_micro(self) -> bool {
+        match self {
             Version::Normal(_) => false,
             Version::Micro(_) => true,
         }
@@ -212,28 +212,28 @@ impl Mode {
     ///
     /// This method will return `Err(QrError::UnsupportedCharacterSet)` if the
     /// mode is not supported in the given version.
-    pub fn length_bits_count(&self, version: Version) -> usize {
+    pub fn length_bits_count(self, version: Version) -> usize {
         match version {
             Version::Micro(a) => {
                 let a = a.as_usize();
-                match *self {
+                match self {
                     Mode::Numeric => 2 + a,
                     Mode::Alphanumeric | Mode::Byte => 1 + a,
                     Mode::Kanji => a,
                 }
             }
-            Version::Normal(1...9) => match *self {
+            Version::Normal(1...9) => match self {
                 Mode::Numeric => 10,
                 Mode::Alphanumeric => 9,
                 Mode::Byte | Mode::Kanji => 8,
             },
-            Version::Normal(10...26) => match *self {
+            Version::Normal(10...26) => match self {
                 Mode::Numeric => 12,
                 Mode::Alphanumeric => 11,
                 Mode::Byte => 16,
                 Mode::Kanji => 10,
             },
-            Version::Normal(_) => match *self {
+            Version::Normal(_) => match self {
                 Mode::Numeric => 14,
                 Mode::Alphanumeric => 13,
                 Mode::Byte => 16,
@@ -250,8 +250,8 @@ impl Mode {
     ///
     /// Note that in Kanji mode, the `raw_data_len` is the number of Kanjis,
     /// i.e. half the total size of bytes.
-    pub fn data_bits_count(&self, raw_data_len: usize) -> usize {
-        match *self {
+    pub fn data_bits_count(self, raw_data_len: usize) -> usize {
+        match self {
             Mode::Numeric => (raw_data_len * 10 + 2) / 3,
             Mode::Alphanumeric => (raw_data_len * 11 + 1) / 2,
             Mode::Byte => raw_data_len * 8,
@@ -269,10 +269,10 @@ impl Mode {
     ///     assert!(a <= c);
     ///     assert!(b <= c);
     ///
-    pub fn max(&self, other: Self) -> Self {
+    pub fn max(self, other: Self) -> Self {
         match self.partial_cmp(&other) {
             Some(Ordering::Less) | Some(Ordering::Equal) => other,
-            Some(Ordering::Greater) => *self,
+            Some(Ordering::Greater) => self,
             None => Mode::Byte,
         }
     }