Implement Clone for Copy types.

components/script/dom/bindings/callback.rs

@@ -16,7 +16,7 @@ use std::ffi::CString;
 use std::ptr;
 
 /// The exception handling used for a call.
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 pub enum ExceptionHandling {
     /// Report any exception and don't throw it to the caller code.
     Report,

components/script/dom/bindings/codegen/CodegenRust.py

@@ -2917,7 +2917,7 @@ class CGEnum(CGThing):
 
         decl = """\
 #[repr(usize)]
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 #[jstraceable]
 pub enum %s {
     %s
@@ -5388,8 +5388,8 @@ class GlobalGenRoots():
         return CGList([
             CGGeneric(AUTOGENERATED_WARNING_COMMENT),
             CGGeneric("pub const MAX_PROTO_CHAIN_LENGTH: usize = %d;\n\n" % config.maxProtoChainLength),
-            CGNonNamespacedEnum('ID', protos, [0], deriving="PartialEq, Copy"),
-            CGNonNamespacedEnum('Proxies', proxies, [0], deriving="PartialEq, Copy"),
+            CGNonNamespacedEnum('ID', protos, [0], deriving="PartialEq, Copy, Clone"),
+            CGNonNamespacedEnum('Proxies', proxies, [0], deriving="PartialEq, Copy, Clone"),
         ])
 
 

components/script/dom/bindings/global.rs

@@ -25,7 +25,7 @@ use js::jsapi::{JS_GetClass};
 use url::Url;
 
 /// A freely-copyable reference to a rooted global object.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum GlobalRef<'a> {
     /// A reference to a `Window` object.
     Window(JSRef<'a, window::Window>),

components/script/dom/bindings/js.rs

@@ -124,6 +124,9 @@ impl<T: Reflectable> Rootable<T> for Unrooted<T> {
 }
 
 impl<T> Copy for Unrooted<T> {}
+impl<T> Clone for Unrooted<T> {
+    fn clone(&self) -> Unrooted<T> { *self }
+}
 
 /// A type that represents a JS-owned value that is rooted for the lifetime of
 /// this value. Importantly, it requires explicit rooting in order to interact
@@ -545,6 +548,9 @@ pub struct RootCollection {
 pub struct RootCollectionPtr(pub *const RootCollection);
 
 impl Copy for RootCollectionPtr {}
+impl Clone for RootCollectionPtr {
+    fn clone(&self) -> RootCollectionPtr { *self }
+}
 
 impl RootCollection {
     /// Create an empty collection of roots

components/script/dom/bindings/utils.rs

@@ -129,7 +129,7 @@ pub struct NativePropertyHooks {
 }
 
 /// The struct that holds inheritance information for DOM object reflectors.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct DOMClass {
     /// A list of interfaces that this object implements, in order of decreasing
     /// derivedness.
@@ -148,6 +148,9 @@ pub struct DOMJSClass {
     /// Associated data for DOM object reflectors.
     pub dom_class: DOMClass
 }
+impl Clone for DOMJSClass {
+    fn clone(&self) -> DOMJSClass { *self }
+}
 unsafe impl Sync for DOMJSClass {}
 
 /// Returns the ProtoOrIfaceArray for the given global object.