Implement Clone for Copy types.

components/compositing/compositor.rs

@@ -145,7 +145,7 @@ enum CompositionRequest {
     CompositeNow(CompositingReason),
 }
 
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Clone, Copy, PartialEq, Debug)]
 enum ShutdownState {
     NotShuttingDown,
     ShuttingDown,

components/compositing/compositor_task.rs

@@ -95,7 +95,7 @@ impl ScriptListener for Box<CompositorProxy+'static+Send> {
 }
 
 /// Information about each layer that the compositor keeps.
-#[derive(Copy)]
+#[derive(Clone, Copy)]
 pub struct LayerProperties {
     pub pipeline_id: PipelineId,
     pub epoch: Epoch,

components/compositing/constellation.rs

@@ -170,7 +170,7 @@ pub struct SendableFrameTree {
     pub children: Vec<SendableFrameTree>,
 }
 
-#[derive(Copy)]
+#[derive(Clone, Copy)]
 enum ExitPipelineMode {
     Normal,
     Force,

components/gfx/buffer_map.rs

@@ -26,7 +26,7 @@ pub struct BufferMap {
 }
 
 /// A key with which to store buffers. It is based on the size of the buffer.
-#[derive(Eq, Copy)]
+#[derive(Eq, Copy, Clone)]
 struct BufferKey([usize; 2]);
 
 impl Hash for BufferKey {

components/gfx/paint_context.rs

@@ -57,7 +57,7 @@ pub struct PaintContext<'a> {
     pub transient_clip: Option<ClippingRegion>,
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 enum Direction {
     Top,
     Left,
@@ -65,7 +65,7 @@ enum Direction {
     Bottom
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 enum DashSize {
     DottedBorder = 1,
     DashedBorder = 3

components/gfx/text/glyph.rs

@@ -87,7 +87,7 @@ impl GlyphEntry {
 pub type GlyphId = u32;
 
 // TODO: unify with bit flags?
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 pub enum BreakType {
     None,
     Normal,
@@ -415,7 +415,7 @@ impl<'a> DetailedGlyphStore {
 
 // This struct is used by GlyphStore clients to provide new glyph data.
 // It should be allocated on the stack and passed by reference to GlyphStore.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct GlyphData {
     id: GlyphId,
     advance: Au,
@@ -449,7 +449,7 @@ impl GlyphData {
 // through glyphs (either for a particular TextRun offset, or all glyphs).
 // Rather than eagerly assembling and copying glyph data, it only retrieves
 // values as they are needed from the GlyphStore, using provided offsets.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum GlyphInfo<'a> {
     Simple(&'a GlyphStore, CharIndex),
     Detail(&'a GlyphStore, CharIndex, u16),

components/gfx/text/util.rs

@@ -2,7 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#[derive(PartialEq, Eq, Copy)]
+#[derive(PartialEq, Eq, Copy, Clone)]
 pub enum CompressionMode {
     CompressNone,
     CompressWhitespace,

components/layout/block.rs

@@ -88,7 +88,7 @@ impl FloatedBlockInfo {
 }
 
 /// The solutions for the block-size-and-margins constraint equation.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 struct BSizeConstraintSolution {
     block_start: Au,
     block_size: Au,
@@ -1962,7 +1962,7 @@ impl fmt::Debug for BlockFlow {
 }
 
 /// The inputs for the inline-sizes-and-margins constraint equation.
-#[derive(Debug, Copy)]
+#[derive(Debug, Copy, Clone)]
 pub struct ISizeConstraintInput {
     pub computed_inline_size: MaybeAuto,
     pub inline_start_margin: MaybeAuto,
@@ -1992,7 +1992,7 @@ impl ISizeConstraintInput {
 }
 
 /// The solutions for the inline-size-and-margins constraint equation.
-#[derive(Copy, Debug)]
+#[derive(Copy, Clone, Debug)]
 pub struct ISizeConstraintSolution {
     pub inline_start: Au,
     pub inline_size: Au,

components/layout/display_list_builder.rs

@@ -1584,7 +1584,7 @@ impl BaseFlowDisplayListBuilding for BaseFlow {
 }
 
 // A helper data structure for gradients.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 struct StopRun {
     start_offset: f32,
     end_offset: f32,

components/layout/floats.rs

@@ -29,7 +29,7 @@ impl FloatKind {
 }
 
 /// The kind of clearance: left, right, or both.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum ClearType {
     Left,
     Right,

components/layout/flow.rs

@@ -693,7 +693,7 @@ pub type DescendantOffsetIter<'a> = Zip<DescendantIter<'a>, IterMut<'a, Au>>;
 
 /// Information needed to compute absolute (i.e. viewport-relative) flow positions (not to be
 /// confused with absolutely-positioned flows).
-#[derive(RustcEncodable, Copy)]
+#[derive(RustcEncodable, Copy, Clone)]
 pub struct AbsolutePositionInfo {
     /// The size of the containing block for relatively-positioned descendants.
     pub relative_containing_block_size: LogicalSize<Au>,

components/layout/inline.rs

@@ -65,7 +65,7 @@ static FONT_SUPERSCRIPT_OFFSET_RATIO: f64 = 0.34;
 /// with a float or a horizontal wall of the containing block. The block-start
 /// inline-start corner of the green zone is the same as that of the line, but
 /// the green zone can be taller and wider than the line itself.
-#[derive(RustcEncodable, Debug, Copy)]
+#[derive(RustcEncodable, Debug, Copy, Clone)]
 pub struct Line {
     /// A range of line indices that describe line breaks.
     ///

components/layout/model.rs

@@ -19,7 +19,7 @@ use util::geometry::Au;
 use util::logical_geometry::LogicalMargin;
 
 /// A collapsible margin. See CSS 2.1 § 8.3.1.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct AdjoiningMargins {
     /// The value of the greatest positive margin.
     pub most_positive: Au,
@@ -62,7 +62,7 @@ impl AdjoiningMargins {
 }
 
 /// Represents the block-start and block-end margins of a flow with collapsible margins. See CSS 2.1 § 8.3.1.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum CollapsibleMargins {
     /// Margins may not collapse with this flow.
     None(Au, Au),
@@ -260,7 +260,7 @@ impl MarginCollapseInfo {
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum MarginCollapseState {
     AccumulatingCollapsibleTopMargin,
     AccumulatingMarginIn,
@@ -357,7 +357,7 @@ impl IntrinsicISizesContribution {
 }
 
 /// Useful helper data type when computing values for blocks and positioned elements.
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 pub enum MaybeAuto {
     Auto,
     Specified(Au),

components/layout/table_row.rs

@@ -66,7 +66,7 @@ impl Encodable for TableRowFlow {
 }
 
 /// Information about the column inline size and span for each cell.
-#[derive(RustcEncodable, Copy)]
+#[derive(RustcEncodable, Copy, Clone)]
 pub struct CellIntrinsicInlineSize {
     /// Inline sizes that this cell contributes to the column.
     pub column_size: ColumnIntrinsicInlineSize,

components/layout/table_wrapper.rs

@@ -37,7 +37,7 @@ use style::properties::ComputedValues;
 use style::values::CSSFloat;
 use style::values::computed::LengthOrPercentageOrAuto;
 
-#[derive(Copy, RustcEncodable, Debug)]
+#[derive(Copy, Clone, RustcEncodable, Debug)]
 pub enum TableLayout {
     Fixed,
     Auto
@@ -565,7 +565,7 @@ impl<'a> Add for &'a AutoLayoutCandidateGuess {
 
 /// The `CSSFloat` member specifies the weight of the smaller of the two guesses, on a scale from
 /// 0.0 to 1.0.
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 enum SelectedAutoLayoutCandidateGuess {
     UseMinimumGuess,
     InterpolateBetweenMinimumGuessAndMinimumPercentageGuess(CSSFloat),

components/layout/traversal.rs

@@ -119,7 +119,7 @@ fn insert_ancestors_into_bloom_filter(bf: &mut Box<BloomFilter>,
 
 /// The recalc-style-for-node traversal, which styles each node and must run before
 /// layout computation. This computes the styles applied to each node.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct RecalcStyleForNode<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }
@@ -211,7 +211,7 @@ impl<'a> PreorderDomTraversal for RecalcStyleForNode<'a> {
 }
 
 /// The flow construction traversal, which builds flows for styled nodes.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct ConstructFlows<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }
@@ -310,7 +310,7 @@ impl<'a> PostorderFlowTraversal for BubbleISizes<'a> {
 }
 
 /// The assign-inline-sizes traversal. In Gecko this corresponds to `Reflow`.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct AssignISizes<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }
@@ -331,7 +331,7 @@ impl<'a> PreorderFlowTraversal for AssignISizes<'a> {
 /// layout computation. Determines the final block-sizes for all layout objects, computes
 /// positions, and computes overflow regions. In Gecko this corresponds to `Reflow` and
 /// `FinishAndStoreOverflow`.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct AssignBSizesAndStoreOverflow<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }
@@ -356,7 +356,7 @@ impl<'a> PostorderFlowTraversal for AssignBSizesAndStoreOverflow<'a> {
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct ComputeAbsolutePositions<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }
@@ -368,7 +368,7 @@ impl<'a> PreorderFlowTraversal for ComputeAbsolutePositions<'a> {
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct BuildDisplayList<'a> {
     pub layout_context: &'a LayoutContext<'a>,
 }

components/layout/wrapper.rs

@@ -170,7 +170,7 @@ pub trait TLayoutNode {
 
 /// A wrapper so that layout can access only the methods that it should have access to. Layout must
 /// only ever see these and must never see instances of `LayoutJS`.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct LayoutNode<'a> {
     /// The wrapped node.
     node: LayoutJS<Node>,
@@ -179,15 +179,6 @@ pub struct LayoutNode<'a> {
     pub chain: PhantomData<&'a ()>,
 }
 
-impl<'ln> Clone for LayoutNode<'ln> {
-    fn clone(&self) -> LayoutNode<'ln> {
-        LayoutNode {
-            node: self.node.clone(),
-            chain: self.chain,
-        }
-    }
-}
-
 impl<'a> PartialEq for LayoutNode<'a> {
     #[inline]
     fn eq(&self, other: &LayoutNode) -> bool {
@@ -520,7 +511,7 @@ impl<'a> Iterator for LayoutTreeIterator<'a> {
 }
 
 /// A wrapper around elements that ensures layout can only ever access safe properties.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct LayoutElement<'le> {
     element: &'le Element,
 }

components/msg/compositor_msg.rs

@@ -33,7 +33,7 @@ pub enum ReadyState {
 }
 
 /// A newtype struct for denoting the age of messages; prevents race conditions.
-#[derive(PartialEq, Eq, Debug, Copy)]
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
 pub struct Epoch(pub u32);
 
 impl Epoch {
@@ -71,7 +71,7 @@ pub enum ScrollPolicy {
 
 /// All layer-specific information that the painting task sends to the compositor other than the
 /// buffer contents of the layer itself.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct LayerMetadata {
     /// An opaque ID. This is usually the address of the flow and index of the box within it.
     pub id: LayerId,

components/msg/constellation_msg.rs

@@ -27,7 +27,7 @@ impl ConstellationChan {
     }
 }
 
-#[derive(PartialEq, Eq, Copy, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum IFrameSandboxState {
     IFrameSandboxed,
     IFrameUnsandboxed
@@ -40,7 +40,7 @@ pub struct Failure {
     pub parent_info: Option<(PipelineId, SubpageId)>,
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct WindowSizeData {
     /// The size of the initial layout viewport, before parsing an
     /// http://www.w3.org/TR/css-device-adapt/#initial-viewport
@@ -196,7 +196,7 @@ bitflags! {
 }
 
 /// Specifies the type of focus event that is sent to a pipeline
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 pub enum FocusType {
     Element,    // The first focus message - focus the element itself
     Parent,     // Focusing a parent element (an iframe)
@@ -342,7 +342,7 @@ pub struct SubpageId(pub u32);
 
 // The type of pipeline exit. During complete shutdowns, pipelines do not have to
 // release resources automatically released on process termination.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum PipelineExitType {
     PipelineOnly,
     Complete,

components/net/fetch/request.rs

@@ -11,7 +11,7 @@ use fetch::cors_cache::CORSCache;
 use fetch::response::Response;
 
 /// A [request context](https://fetch.spec.whatwg.org/#concept-request-context)
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum Context {
     Audio, Beacon, CSPreport, Download, Embed, Eventsource,
     Favicon, Fetch, Font, Form, Frame, Hyperlink, IFrame, Image,
@@ -21,7 +21,7 @@ pub enum Context {
 }
 
 /// A [request context frame type](https://fetch.spec.whatwg.org/#concept-request-context-frame-type)
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum ContextFrameType {
     Auxiliary,
     TopLevel,
@@ -37,7 +37,7 @@ pub enum Referer {
 }
 
 /// A [request mode](https://fetch.spec.whatwg.org/#concept-request-mode)
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum RequestMode {
     SameOrigin,
     NoCORS,
@@ -46,7 +46,7 @@ pub enum RequestMode {
 }
 
 /// Request [credentials mode](https://fetch.spec.whatwg.org/#concept-request-credentials-mode)
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum CredentialsMode {
     Omit,
     CredentialsSameOrigin,
@@ -54,7 +54,7 @@ pub enum CredentialsMode {
 }
 
 /// [Response tainting](https://fetch.spec.whatwg.org/#concept-request-response-tainting)
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum ResponseTainting {
     Basic,
     CORSTainting,

components/net_traits/image_cache_task.rs

@@ -16,7 +16,7 @@ pub trait ImageResponder : Send {
 }
 
 /// The current state of an image in the cache.
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 pub enum ImageState {
     Pending,
     LoadError,

components/net_traits/lib.rs

@@ -192,7 +192,7 @@ impl Metadata {
 }
 
 /// The creator of a given cookie
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 pub enum CookieSource {
     /// An HTTP API
     HTTP,

components/net_traits/storage_task.rs

@@ -7,7 +7,7 @@ use url::Url;
 
 use util::str::DOMString;
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum StorageType {
     Session,
     Local

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.

components/script/dom/domexception.rs

@@ -13,7 +13,7 @@ use util::str::DOMString;
 use std::borrow::ToOwned;
 
 #[repr(u16)]
-#[derive(Copy, Debug)]
+#[derive(Copy, Clone, Debug)]
 #[jstraceable]
 pub enum DOMErrorName {
     IndexSizeError = DOMExceptionConstants::INDEX_SIZE_ERR,

components/script/dom/element.rs

@@ -108,7 +108,7 @@ impl ElementDerived for EventTarget {
     }
 }
 
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 #[jstraceable]
 pub enum ElementTypeId {
     HTMLElement(HTMLElementTypeId),

components/script/dom/event.rs

@@ -19,7 +19,7 @@ use std::default::Default;
 use time;
 
 #[jstraceable]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 #[repr(u16)]
 pub enum EventPhase {
     None      = EventConstants::NONE,

components/script/dom/eventtarget.rs

@@ -33,14 +33,14 @@ use url::Url;
 
 use std::collections::HashMap;
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 pub enum ListenerPhase {
     Capturing,
     Bubbling,
 }
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 pub enum EventTargetTypeId {
     Node(NodeTypeId),
@@ -51,7 +51,7 @@ pub enum EventTargetTypeId {
     XMLHttpRequestEventTarget(XMLHttpRequestEventTargetTypeId)
 }
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 pub enum EventListenerType {
     Additive(EventListener),
@@ -67,7 +67,7 @@ impl EventListenerType {
     }
 }
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 #[privatize]
 pub struct EventListenerEntry {

components/script/dom/htmlbuttonelement.rs

@@ -29,7 +29,7 @@ use std::cell::Cell;
 use string_cache::Atom;
 
 #[jstraceable]
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 #[allow(dead_code)]
 enum ButtonType {
     ButtonSubmit,

components/script/dom/htmlelement.rs

@@ -239,7 +239,7 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLElement> {
     }
 }
 
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 #[jstraceable]
 pub enum HTMLElementTypeId {
     HTMLElement,

components/script/dom/htmlformelement.rs

@@ -133,13 +133,13 @@ impl<'a> HTMLFormElementMethods for JSRef<'a, HTMLFormElement> {
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum SubmittedFrom {
     FromFormSubmitMethod,
     NotFromFormSubmitMethod
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum ResetFrom {
     FromFormResetMethod,
     NotFromFormResetMethod
@@ -407,21 +407,21 @@ pub struct FormDatum {
     pub value: DOMString
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum FormEncType {
     TextPlainEncoded,
     UrlEncoded,
     FormDataEncoded
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum FormMethod {
     FormGet,
     FormPost,
     FormDialog
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum FormSubmitter<'a> {
     FormElement(JSRef<'a, HTMLFormElement>),
     InputElement(JSRef<'a, HTMLInputElement>),

components/script/dom/htmlinputelement.rs

@@ -48,7 +48,7 @@ const DEFAULT_SUBMIT_VALUE: &'static str = "Submit";
 const DEFAULT_RESET_VALUE: &'static str = "Reset";
 
 #[jstraceable]
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 #[allow(dead_code)]
 enum InputType {
     InputSubmit,

components/script/dom/htmlmediaelement.rs

@@ -38,7 +38,7 @@ impl HTMLMediaElement {
     }
 }
 
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 #[jstraceable]
 pub enum HTMLMediaElementTypeId {
     HTMLAudioElement,

components/script/dom/htmltablecellelement.rs

@@ -16,7 +16,7 @@ use cssparser::RGBA;
 use util::str::{self, DOMString, LengthOrPercentageOrAuto};
 use std::cell::Cell;
 
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 #[jstraceable]
 pub enum HTMLTableCellElementTypeId {
     HTMLTableDataCellElement,

components/script/dom/node.rs

@@ -190,7 +190,7 @@ impl Drop for Node {
 /// suppress observers flag
 /// https://dom.spec.whatwg.org/#concept-node-insert
 /// https://dom.spec.whatwg.org/#concept-node-remove
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 enum SuppressObserver {
     Suppressed,
     Unsuppressed
@@ -266,7 +266,7 @@ impl LayoutDataRef {
 }
 
 /// The different types of nodes.
-#[derive(Copy, PartialEq, Debug)]
+#[derive(Copy, Clone, PartialEq, Debug)]
 #[jstraceable]
 pub enum NodeTypeId {
     DocumentType,
@@ -1311,7 +1311,7 @@ impl Iterator for TreeIterator {
 
 
 /// Specifies whether children must be recursively cloned or not.
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 pub enum CloneChildrenFlag {
     CloneChildren,
     DoNotCloneChildren

components/script/dom/servohtmlparser.rs

@@ -33,7 +33,7 @@ pub struct Sink {
 
 /// FragmentContext is used only to pass this group of related values
 /// into functions.
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct FragmentContext<'a> {
     pub context_elem: JSRef<'a, Node>,
     pub form_elem: Option<JSRef<'a, Node>>,

components/script/dom/workerglobalscope.rs

@@ -34,7 +34,7 @@ use std::rc::Rc;
 use std::cell::Cell;
 use url::{Url, UrlParser};
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 pub enum WorkerGlobalScopeTypeId {
     DedicatedGlobalScope,

components/script/dom/xmlhttprequest.rs

@@ -67,7 +67,7 @@ use dom::bindings::codegen::UnionTypes::StringOrURLSearchParams;
 use dom::bindings::codegen::UnionTypes::StringOrURLSearchParams::{eString, eURLSearchParams};
 pub type SendParam = StringOrURLSearchParams;
 
-#[derive(PartialEq, Copy)]
+#[derive(PartialEq, Copy, Clone)]
 #[jstraceable]
 enum XMLHttpRequestState {
     Unsent = 0,

components/script/dom/xmlhttprequesteventtarget.rs

@@ -9,7 +9,7 @@ use dom::bindings::codegen::InheritTypes::XMLHttpRequestEventTargetDerived;
 use dom::bindings::js::JSRef;
 use dom::eventtarget::{EventTarget, EventTargetHelpers, EventTargetTypeId};
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 #[jstraceable]
 pub enum XMLHttpRequestEventTargetTypeId {
     XMLHttpRequest,

components/script/script_task.rs

@@ -152,7 +152,7 @@ impl InProgressLoad {
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum TimerSource {
     FromWindow(PipelineId),
     FromWorker

components/script/textinput.rs

@@ -17,14 +17,14 @@ use std::default::Default;
 use std::num::SignedInt;
 use std::sync::mpsc::channel;
 
-#[derive(Copy, PartialEq)]
+#[derive(Copy, Clone, PartialEq)]
 pub enum Selection {
     Selected,
     NotSelected
 }
 
 #[jstraceable]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct TextPoint {
     /// 0-based line number
     pub line: usize,

components/script/timers.rs

@@ -29,7 +29,7 @@ use std::time::duration::Duration;
 
 #[derive(PartialEq, Eq)]
 #[jstraceable]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct TimerId(i32);
 
 #[jstraceable]

components/style/legacy.rs

@@ -21,14 +21,14 @@ use util::geometry::Au;
 use util::str::LengthOrPercentageOrAuto;
 
 /// Legacy presentational attributes that take a length as defined in HTML5 § 2.4.4.4.
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 pub enum LengthAttribute {
     /// `<td width>`
     Width,
 }
 
 /// Legacy presentational attributes that take an integer as defined in HTML5 § 2.4.4.2.
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 pub enum IntegerAttribute {
     /// `<input size>`
     Size,
@@ -37,7 +37,7 @@ pub enum IntegerAttribute {
 }
 
 /// Legacy presentational attributes that take a nonnegative integer as defined in HTML5 § 2.4.4.2.
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 pub enum UnsignedIntegerAttribute {
     /// `<td border>`
     Border,

components/style/media_queries.rs

@@ -16,7 +16,7 @@ pub struct MediaQueryList {
     pub media_queries: Vec<MediaQuery>
 }
 
-#[derive(PartialEq, Eq, Copy, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum Range<T> {
     Min(T),
     Max(T),
@@ -59,14 +59,14 @@ impl<T: Ord> Range<T> {
 }
 
 /// http://dev.w3.org/csswg/mediaqueries-3/#media1
-#[derive(PartialEq, Copy, Debug)]
+#[derive(PartialEq, Copy, Clone, Debug)]
 pub enum Expression {
     /// http://dev.w3.org/csswg/mediaqueries-3/#width
     Width(Range<specified::Length>),
 }
 
 /// http://dev.w3.org/csswg/mediaqueries-3/#media0
-#[derive(PartialEq, Eq, Copy, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum Qualifier {
     Only,
     Not,
@@ -91,13 +91,13 @@ impl MediaQuery {
 }
 
 /// http://dev.w3.org/csswg/mediaqueries-3/#media0
-#[derive(PartialEq, Eq, Copy, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum MediaQueryType {
     All,  // Always true
     MediaType(MediaType),
 }
 
-#[derive(PartialEq, Eq, Copy, Debug)]
+#[derive(PartialEq, Eq, Copy, Clone, Debug)]
 pub enum MediaType {
     Screen,
     Print,

components/style/properties.mako.rs

@@ -4685,7 +4685,7 @@ fn deduplicate_property_declarations(declarations: Vec<PropertyDeclaration>)
 }
 
 
-#[derive(Copy, PartialEq, Eq, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Debug)]
 pub enum CSSWideKeyword {
     InitialKeyword,
     InheritKeyword,
@@ -4732,7 +4732,7 @@ pub enum PropertyDeclaration {
 }
 
 
-#[derive(Eq, PartialEq, Copy)]
+#[derive(Eq, PartialEq, Copy, Clone)]
 pub enum PropertyDeclarationParseResult {
     UnknownProperty,
     ExperimentalProperty,

components/style/stylesheets.rs

@@ -312,7 +312,7 @@ struct TopLevelRuleParser<'a> {
     state: Cell<State>,
 }
 
-#[derive(Eq, PartialEq, Ord, PartialOrd, Copy)]
+#[derive(Eq, PartialEq, Ord, PartialOrd, Copy, Clone)]
 enum State {
     Start = 1,
     Imports = 2,

components/util/geometry.rs

@@ -31,7 +31,7 @@ use rustc_serialize::{Encoder, Encodable};
 ///
 /// The ratio between ScreenPx and DevicePixel for a given display be found by calling
 /// `servo::windowing::WindowMethods::hidpi_factor`.
-#[derive(Debug, Copy)]
+#[derive(Debug, Copy, Clone)]
 pub enum ScreenPx {}
 
 /// One CSS "px" in the coordinate system of the "initial viewport":
@@ -43,7 +43,7 @@ pub enum ScreenPx {}
 ///
 /// At the default zoom level of 100%, one PagePx is equal to one ScreenPx.  However, if the
 /// document is zoomed in or out then this scale may be larger or smaller.
-#[derive(RustcEncodable, Debug, Copy)]
+#[derive(RustcEncodable, Debug, Copy, Clone)]
 pub enum ViewportPx {}
 
 /// One CSS "px" in the root coordinate system for the content document.
@@ -52,7 +52,7 @@ pub enum ViewportPx {}
 /// This is the mobile-style "pinch zoom" that enlarges content without reflowing it.  When the
 /// viewport zoom is not equal to 1.0, then the layout viewport is no longer the same physical size
 /// as the viewable area.
-#[derive(RustcEncodable, Debug, Copy)]
+#[derive(RustcEncodable, Debug, Copy, Clone)]
 pub enum PagePx {}
 
 // In summary, the hierarchy of pixel units and the factors to convert from one to the next:

components/util/str.rs

@@ -127,7 +127,7 @@ pub fn parse_unsigned_integer<T: Iterator<Item=char>>(input: T) -> Option<u32> {
     })
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub enum LengthOrPercentageOrAuto {
     Auto,
     Percentage(f64),

ports/gonk/src/window.rs

@@ -148,7 +148,7 @@ pub struct hwc_color {
 }
 
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct hwc_rect {
     left: c_int,
     top: c_int,