cleanup (#23)

Author: chirizxc

src/hex/helpers.rs

@@ -78,21 +78,15 @@ fn is_urn_uuid(py_str: &[u8]) -> bool {
 #[expect(clippy::inline_always)]
 #[inline(always)]
 pub fn parse_uuid_hex_str(mut py_str: &[u8], hi: &mut u64, lo: &mut u64) -> c_int {
-    match py_str.len() {
-        32 => return parse_hex32(py_str, hi, lo),
-        36 => return parse_dashed(py_str, hi, lo),
-        _ => {}
-    }
+    let len = py_str.len();
 
-    if py_str.len() >= 9 && is_urn_uuid(py_str) {
+    if len >= 9 && is_urn_uuid(py_str) {
         py_str = &py_str[9..];
     }
-
-    if py_str.len() >= 2 && py_str[0] == b'{' && py_str[py_str.len() - 1] == b'}' {
-        py_str = &py_str[1..py_str.len() - 1];
+    if len >= 2 && py_str[0] == b'{' && py_str[len - 1] == b'}' {
+        py_str = &py_str[1..len - 1];
     }
-
-    match py_str.len() {
+    match len {
         32 => parse_hex32(py_str, hi, lo),
         36 => parse_dashed(py_str, hi, lo),
         _ => -1,

src/hex/table.rs

@@ -1,9 +1,9 @@
-const HEX_DIGITS: &[u8; 16] = b"0123456789abcdef";
-
 #[expect(clippy::large_stack_arrays, clippy::large_stack_frames)]
 const fn build_hex_words() -> [u32; 65536] {
-    let mut tmp = [0u32; 65536];
-    let mut i = 0usize;
+    const HEX_DIGITS: &[u8; 16] = b"0123456789abcdef";
+
+    let mut tmp = [0; 65536];
+    let mut i = 0;
 
     while i < 65536 {
         tmp[i] = u32::from_ne_bytes([
@@ -29,14 +29,14 @@ const fn hex_nibble(c: u8) -> i8 {
 
 #[expect(clippy::large_stack_arrays)]
 const fn build_hex_pairs() -> [i16; 65536] {
-    let mut tmp = [-1i16; 65536];
-    let mut hi_c = 0u16;
+    let mut tmp = [-1_i16; 65536];
+    let mut hi_c = 0_u16;
 
     while hi_c < 256 {
         let hn = hex_nibble(hi_c as u8);
 
         if hn >= 0 {
-            let mut lo_c = 0u16;
+            let mut lo_c = 0_u16;
 
             while lo_c < 256 {
                 let ln = hex_nibble(lo_c as u8);