script: Stop copying the document URL.

components/script/dom/document.rs

@@ -226,7 +226,6 @@ impl CollectionFilter for AppletsFilter {
     }
 }
 
-
 impl Document {
     #[inline]
     pub fn loader(&self) -> Ref<DocumentLoader> {
@@ -269,16 +268,16 @@ impl Document {
     }
 
     // https://dom.spec.whatwg.org/#concept-document-url
-    pub fn url(&self) -> Url {
+    pub fn url<'a>(&'a self) -> &'a Url {
-        self.url.clone()
+        &self.url
     }
 
     // https://html.spec.whatwg.org/multipage/#fallback-base-url
-    pub fn fallback_base_url(&self) -> Url {
+    pub fn fallback_base_url<'a>(&'a self) -> Url {
         // Step 1: iframe srcdoc (#4767).
         // Step 2: about:blank with a creator browsing context.
         // Step 3.
-        self.url()
+        self.url().clone()
     }
 
     // https://html.spec.whatwg.org/multipage/#document-base-url
@@ -1735,7 +1734,7 @@ impl DocumentMethods for Document {
         }
         let window = self.window.root();
         let (tx, rx) = ipc::channel().unwrap();
-        let _ = window.r().resource_task().send(GetCookiesForUrl(url, tx, NonHTTP));
+        let _ = window.r().resource_task().send(GetCookiesForUrl((*url).clone(), tx, NonHTTP));
         let cookies = rx.recv().unwrap();
         Ok(cookies.unwrap_or("".to_owned()))
     }
@@ -1744,11 +1743,11 @@ impl DocumentMethods for Document {
     fn SetCookie(&self, cookie: DOMString) -> ErrorResult {
         //TODO: ignore for cookie-averse Document
         let url = self.url();
-        if !is_scheme_host_port_tuple(&url) {
+        if !is_scheme_host_port_tuple(url) {
             return Err(Security);
         }
         let window = self.window.root();
-        let _ = window.r().resource_task().send(SetCookiesForUrl(url, cookie, NonHTTP));
+        let _ = window.r().resource_task().send(SetCookiesForUrl((*url).clone(), cookie, NonHTTP));
         Ok(())
     }
 

components/script/dom/htmlbaseelement.rs

@@ -50,7 +50,8 @@ impl HTMLBaseElement {
         let href = ElementCast::from_ref(self).get_attribute(&ns!(""), &atom!("href"))
             .expect("The frozen base url is only defined for base elements \
                      that have a base url.");
-        let base = document_from_node(self).fallback_base_url();
+        let document = document_from_node(self);
+        let base = document.fallback_base_url();
         let parsed = UrlParser::new().base_url(&base).parse(&href.value());
         parsed.unwrap_or(base)
     }

components/script/dom/htmlbodyelement.rs

@@ -133,7 +133,8 @@ impl VirtualMethods for HTMLBodyElement {
             },
             (&atom!(background), _) => {
                 *self.background.borrow_mut() = mutation.new_value(attr).and_then(|value| {
-                    let base = document_from_node(self).url();
+                    let document = document_from_node(self);
+                    let base = document.url();
                     UrlParser::new().base_url(&base).parse(&value).ok()
                 });
             },

components/script/dom/htmlformelement.rs

@@ -187,7 +187,8 @@ impl HTMLFormElement {
         }
         // TODO: Resolve the url relative to the submitter element
         // Step 10-15
-        let action_components = UrlParser::new().base_url(&base).parse(&action).unwrap_or(base);
+        let action_components =
+            UrlParser::new().base_url(base).parse(&action).unwrap_or((*base).clone());
         let _action = action_components.serialize();
         let scheme = action_components.scheme.clone();
         let enctype = submitter.enctype();

components/script/dom/node.rs

@@ -1715,7 +1715,7 @@ impl Node {
                 };
                 let window = document.window();
                 let loader = DocumentLoader::new(&*document.loader());
-                let document = Document::new(window.r(), Some(document.url()),
+                let document = Document::new(window.r(), Some((*document.url()).clone()),
                                              is_html_doc, None,
                                              None, DocumentSource::NotFromParser, loader);
                 NodeCast::from_root(document)

components/script/dom/window.rs

@@ -1098,7 +1098,7 @@ impl Window {
 
     pub fn get_url(&self) -> Url {
         let doc = self.Document();
-        doc.r().url()
+        (*doc.r().url()).clone()
     }
 
     pub fn resource_task(&self) -> ResourceTask {

components/script/script_task.rs

@@ -1909,7 +1909,7 @@ impl ScriptTask {
         window.r().set_fragment_name(final_url.fragment.clone());
 
         // Notify devtools that a new script global exists.
-        self.notify_devtools(document.r().Title(), final_url, (id, None));
+        self.notify_devtools(document.r().Title(), (*final_url).clone(), (id, None));
     }
 }
 

components/script/webdriver_handlers.rs

@@ -182,6 +182,7 @@ pub fn handle_get_name(page: &Rc<Page>,
 pub fn handle_get_url(page: &Rc<Page>,
                       _pipeline: PipelineId,
                       reply: IpcSender<Url>) {
-    let url = page.document().r().url();
+    let document = page.document();
-    reply.send(url).unwrap();
+    let url = document.r().url();
+    reply.send((*url).clone()).unwrap();
 }