fix: properly clone url

Co-authored-by: Steve Klabnik <steve@steveklabnik.com>

Author: anonrig

deps/ada.cpp

@@ -1,4 +1,4 @@
-/* auto-generated on 2023-08-25 15:25:45 -0400. Do not edit! */
+/* auto-generated on 2023-08-26 17:38:28 -0400. Do not edit! */
 /* begin file src/ada.cpp */
 #include "ada.h"
 /* begin file src/checkers.cpp */
@@ -14893,6 +14893,11 @@ void ada_free(ada_url result) noexcept {
   delete r;
 }
 
+ada_url ada_copy(ada_url input) noexcept {
+  ada::result<ada::url_aggregator>& r = get_instance(input);
+  return new ada::result<ada::url_aggregator>(r);
+}
+
 bool ada_is_valid(ada_url result) noexcept {
   ada::result<ada::url_aggregator>& r = get_instance(result);
   return r.has_value();

deps/ada.h

@@ -1,4 +1,4 @@
-/* auto-generated on 2023-08-25 15:25:45 -0400. Do not edit! */
+/* auto-generated on 2023-08-26 17:38:28 -0400. Do not edit! */
 /* begin file include/ada.h */
 /**
  * @file ada.h
@@ -6922,14 +6922,14 @@ inline void url_search_params::sort() {
 #ifndef ADA_ADA_VERSION_H
 #define ADA_ADA_VERSION_H
 
-#define ADA_VERSION "2.6.2"
+#define ADA_VERSION "2.6.3"
 
 namespace ada {
 
 enum {
   ADA_VERSION_MAJOR = 2,
   ADA_VERSION_MINOR = 6,
-  ADA_VERSION_REVISION = 2,
+  ADA_VERSION_REVISION = 3,
 };
 
 }  // namespace ada

deps/ada_c.h

@@ -51,6 +51,7 @@ bool ada_can_parse_with_base(const char* input, size_t input_length,
 
 void ada_free(ada_url result);
 void ada_free_owned_string(ada_owned_string owned);
+ada_url ada_copy(ada_url input);
 
 bool ada_is_valid(ada_url result);
 

src/ffi.rs

@@ -59,6 +59,7 @@ extern "C" {
     ) -> *mut ada_url;
     pub fn ada_free(url: *mut ada_url);
     pub fn ada_free_owned_string(url: *mut ada_owned_string);
+    pub fn ada_copy(url: *mut ada_url) -> *mut ada_url;
     pub fn ada_is_valid(url: *mut ada_url) -> bool;
     pub fn ada_can_parse(url: *const c_char, length: usize) -> bool;
     pub fn ada_can_parse_with_base(

src/lib.rs

@@ -39,6 +39,7 @@ use std::os::raw::c_uint;
 use std::{borrow, fmt, hash, ops};
 use thiserror::Error;
 
+extern crate alloc;
 #[cfg(feature = "serde")]
 extern crate serde;
 
@@ -68,11 +69,21 @@ impl From<c_uint> for HostType {
 }
 
 /// A parsed URL struct according to WHATWG URL specification.
-#[derive(Eq, Clone)]
+#[derive(Eq)]
 pub struct Url {
     url: *mut ffi::ada_url,
 }
 
+/// Clone trait by default uses bit-wise copy.
+/// In Rust, FFI requires deep copy, which requires an additional/inexpensive FFI call.
+impl Clone for Url {
+    fn clone(&self) -> Self {
+        Url {
+            url: unsafe { ffi::ada_copy(self.url) },
+        }
+    }
+}
+
 impl Drop for Url {
     fn drop(&mut self) {
         unsafe { ffi::ada_free(self.url) }
@@ -749,4 +760,14 @@ mod test {
         let deserialized: Url = serde_json::from_str(&output).unwrap();
         assert_eq!(deserialized.href(), input.to_string() + "/");
     }
+
+    #[test]
+    fn should_clone() {
+        let first = Url::parse("https://lemire.me", None).unwrap();
+        let mut second = first.clone();
+        second.set_href("https://yagiz.co");
+        assert_ne!(first.href(), second.href());
+        assert_eq!(first.href(), "https://lemire.me/");
+        assert_eq!(second.href(), "https://yagiz.co/");
+    }
 }