added bytes-specific get_X functions to reduce dead code

src/bytes.rs

@@ -533,6 +533,23 @@ impl Clone for Bytes {
     }
 }
 
+macro_rules! buf_get_impl {
+    ($this:ident, $typ:tt::$conv:tt) => {{
+        const SIZE: usize = mem::size_of::<$typ>();
+        // slice.get() returns None on failing bounds check, resulting in a panic, but skips the unnecessary code of the
+        // default buf impl that needs to account for non-contiguous memory
+        let ret = $this
+            .chunk()
+            .get(..SIZE)
+            .map(|src| unsafe { $typ::$conv(*(src as *const _ as *const [_; SIZE])) })
+            .unwrap();
+
+        // if the direct conversion was possible, advance and return
+        $this.advance(SIZE);
+        return ret;
+    }};
+}
+
 impl Buf for Bytes {
     #[inline]
     fn remaining(&self) -> usize {
@@ -567,6 +584,102 @@ impl Buf for Bytes {
             ret
         }
     }
+
+    fn get_u16(&mut self) -> u16 {
+        buf_get_impl!(self, u16::from_be_bytes);
+    }
+
+    fn get_u16_le(&mut self) -> u16 {
+        buf_get_impl!(self, u16::from_le_bytes);
+    }
+
+    fn get_u16_ne(&mut self) -> u16 {
+        buf_get_impl!(self, u16::from_ne_bytes);
+    }
+
+    fn get_i16(&mut self) -> i16 {
+        buf_get_impl!(self, i16::from_be_bytes);
+    }
+
+    fn get_i16_le(&mut self) -> i16 {
+        buf_get_impl!(self, i16::from_le_bytes);
+    }
+
+    fn get_i16_ne(&mut self) -> i16 {
+        buf_get_impl!(self, i16::from_ne_bytes);
+    }
+
+    fn get_u32(&mut self) -> u32 {
+        buf_get_impl!(self, u32::from_be_bytes);
+    }
+
+    fn get_u32_le(&mut self) -> u32 {
+        buf_get_impl!(self, u32::from_le_bytes);
+    }
+
+    fn get_u32_ne(&mut self) -> u32 {
+        buf_get_impl!(self, u32::from_ne_bytes);
+    }
+
+    fn get_i32(&mut self) -> i32 {
+        buf_get_impl!(self, i32::from_be_bytes);
+    }
+
+    fn get_i32_le(&mut self) -> i32 {
+        buf_get_impl!(self, i32::from_le_bytes);
+    }
+
+    fn get_i32_ne(&mut self) -> i32 {
+        buf_get_impl!(self, i32::from_ne_bytes);
+    }
+
+    fn get_u64(&mut self) -> u64 {
+        buf_get_impl!(self, u64::from_be_bytes);
+    }
+
+    fn get_u64_le(&mut self) -> u64 {
+        buf_get_impl!(self, u64::from_le_bytes);
+    }
+
+    fn get_u64_ne(&mut self) -> u64 {
+        buf_get_impl!(self, u64::from_ne_bytes);
+    }
+
+    fn get_i64(&mut self) -> i64 {
+        buf_get_impl!(self, i64::from_be_bytes);
+    }
+
+    fn get_i64_le(&mut self) -> i64 {
+        buf_get_impl!(self, i64::from_le_bytes);
+    }
+
+    fn get_i64_ne(&mut self) -> i64 {
+        buf_get_impl!(self, i64::from_ne_bytes);
+    }
+
+    fn get_u128(&mut self) -> u128 {
+        buf_get_impl!(self, u128::from_be_bytes);
+    }
+
+    fn get_u128_le(&mut self) -> u128 {
+        buf_get_impl!(self, u128::from_le_bytes);
+    }
+
+    fn get_u128_ne(&mut self) -> u128 {
+        buf_get_impl!(self, u128::from_ne_bytes);
+    }
+
+    fn get_i128(&mut self) -> i128 {
+        buf_get_impl!(self, i128::from_be_bytes);
+    }
+
+    fn get_i128_le(&mut self) -> i128 {
+        buf_get_impl!(self, i128::from_le_bytes);
+    }
+
+    fn get_i128_ne(&mut self) -> i128 {
+        buf_get_impl!(self, i128::from_ne_bytes);
+    }
 }
 
 impl Deref for Bytes {