clippy auto fixes

Author: rcgoodfellow

codegen/rust/src/lib.rs

@@ -101,8 +101,7 @@ pub fn emit(
             // On failure write generated code to a tempfile
             println!("Code generation produced unparsable code");
             write_to_tempfile(&tokens)?;
-            return Err(io::Error::new(
-                io::ErrorKind::Other,
+            return Err(io::Error::other(
                 format!("Failed to parse generated code: {:?}", e),
             ));
         }
@@ -299,7 +298,7 @@ fn type_size(ty: &Type, ast: &AST) -> usize {
 fn type_size_bytes(ty: &Type, ast: &AST) -> usize {
     let s = type_size(ty, ast);
     let mut b = s >> 3;
-    if s % 8 != 0 {
+    if !s.is_multiple_of(8) {
         b += 1
     }
     b

lang/p4rs/src/checksum.rs

@@ -62,7 +62,7 @@ pub fn udp6_checksum(data: &[u8]) -> u16 {
     csum.add(payload_len[0], payload_len[1]);
 
     let len = payload.len();
-    let (odd, len) = if len % 2 == 0 {
+    let (odd, len) = if len.is_multiple_of(2) {
         (false, len)
     } else {
         (true, len - 1)

lang/p4rs/src/lib.rs

@@ -370,7 +370,7 @@ pub fn extract_bit_action_parameter(
     size: usize,
 ) -> BitVec<u8, Msb0> {
     let mut byte_size = size >> 3;
-    if size % 8 != 0 {
+    if !size.is_multiple_of(8) {
         byte_size += 1;
     }
     let mut b: BitVec<u8, Msb0> =

lang/p4rs/src/table.rs

@@ -84,17 +84,14 @@ impl Key {
 }
 
 #[derive(Debug, Clone, PartialEq, Hash, Eq, Serialize, Deserialize)]
+#[derive(Default)]
 pub enum Ternary {
+    #[default]
     DontCare,
     Value(BigUintKey),
     Masked(BigUint, BigUint, usize),
 }
 
-impl Default for Ternary {
-    fn default() -> Self {
-        Self::DontCare
-    }
-}
 
 #[derive(Debug, Clone, PartialEq, Hash, Eq, Serialize, Deserialize)]
 pub struct Prefix {