Optimize decoding

src/path.rs

@@ -1,19 +1,30 @@
 use crate::{decode::percent_decode, errors::decode::DecodeError};
+use std::borrow::Cow;
 
-pub struct Path {
-    pub inner: Vec<u8>,
+pub struct Path<'a> {
+    original: Cow<'a, [u8]>,
+    decoded: Option<Vec<u8>>,
 }
 
-impl Path {
+impl<'a> Path<'a> {
     #[must_use]
-    pub fn new(path: &str) -> Self {
+    pub const fn new(path: &'a str) -> Self {
         Self {
-            inner: path.as_bytes().to_vec(),
+            original: Cow::Borrowed(path.as_bytes()),
+            decoded: None,
         }
     }
 
     pub fn percent_decode(&mut self) -> Result<(), DecodeError> {
-        self.inner = percent_decode(&self.inner)?;
+        if self.decoded.is_none() {
+            self.decoded = Some(percent_decode(&self.original)?);
+        }
+
         Ok(())
     }
+
+    #[must_use]
+    pub fn as_bytes(&self) -> &[u8] {
+        self.decoded.as_deref().unwrap_or(&self.original)
+    }
 }

src/router.rs

@@ -146,7 +146,7 @@ impl<T> Router<T> {
         let mut parameters = smallvec![];
         let Some(node) = self
             .root
-            .search(&path.inner, &mut parameters, &self.constraints)
+            .search(path.as_bytes(), &mut parameters, &self.constraints)
         else {
             return Ok(None);
         };