Implement XMLSerializer interface

components/script/dom/xmlserializer.rs

@@ -0,0 +1,60 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use crate::dom::bindings::codegen::Bindings::XMLSerializerBinding;
+use crate::dom::bindings::codegen::Bindings::XMLSerializerBinding::XMLSerializerMethods;
+use crate::dom::bindings::error::{Error, Fallible};
+use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::str::DOMString;
+use crate::dom::node::Node;
+use crate::dom::window::Window;
+use dom_struct::dom_struct;
+use xml5ever::serialize::{serialize, SerializeOpts, TraversalScope};
+
+#[dom_struct]
+pub struct XMLSerializer {
+    reflector_: Reflector,
+    window: Dom<Window>,
+}
+
+impl XMLSerializer {
+    fn new_inherited(window: &Window) -> XMLSerializer {
+        XMLSerializer {
+            reflector_: Reflector::new(),
+            window: Dom::from_ref(window),
+        }
+    }
+
+    pub fn new(window: &Window) -> DomRoot<XMLSerializer> {
+        reflect_dom_object(
+            Box::new(XMLSerializer::new_inherited(window)),
+            window,
+            XMLSerializerBinding::Wrap,
+        )
+    }
+
+    pub fn Constructor(window: &Window) -> Fallible<DomRoot<XMLSerializer>> {
+        Ok(XMLSerializer::new(window))
+    }
+}
+
+impl XMLSerializerMethods for XMLSerializer {
+    // https://w3c.github.io/DOM-Parsing/#the-xmlserializer-interface
+    fn SerializeToString(&self, root: &Node) -> Fallible<DOMString> {
+        let mut writer = vec![];
+        match serialize(
+            &mut writer,
+            &root,
+            SerializeOpts {
+                traversal_scope: TraversalScope::IncludeNode,
+            },
+        ) {
+            Ok(_) => Ok(DOMString::from(String::from_utf8(writer).unwrap())),
+            Err(_) => Err(Error::Type(String::from(
+                "root must be a Node or an Attr object",
+            ))),
+        }
+    }
+}