style: Add derived ToShmem implementations.

Differential Revision: https://phabricator.services.mozilla.com/D17197

components/style/values/generics/background.rs

@@ -27,6 +27,7 @@ fn width_and_height_are_auto<L>(
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericBackgroundSize<LengthPercent> {

components/style/values/generics/basic_shape.rs

@@ -31,6 +31,7 @@ pub type ClippingShape<BasicShape, Url> = ShapeSource<BasicShape, GeometryBox, U
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum GeometryBox {
     FillBox,
@@ -58,6 +59,7 @@ pub type FloatAreaShape<BasicShape, Image> = ShapeSource<BasicShape, ShapeBox, I
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ShapeBox {
     MarginBox,
@@ -79,6 +81,7 @@ pub enum ShapeBox {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ShapeSource<BasicShape, ReferenceBox, ImageOrUrl> {
     #[animation(error)]
@@ -104,11 +107,24 @@ pub enum ShapeSource<BasicShape, ReferenceBox, ImageOrUrl> {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum BasicShape<H, V, LengthPercentage, NonNegativeLengthPercentage> {
-    Inset(#[css(field_bound)] InsetRect<LengthPercentage, NonNegativeLengthPercentage>),
-    Circle(#[css(field_bound)] Circle<H, V, NonNegativeLengthPercentage>),
-    Ellipse(#[css(field_bound)] Ellipse<H, V, NonNegativeLengthPercentage>),
+    Inset(
+        #[css(field_bound)]
+        #[shmem(field_bound)]
+        InsetRect<LengthPercentage, NonNegativeLengthPercentage>,
+    ),
+    Circle(
+        #[css(field_bound)]
+        #[shmem(field_bound)]
+        Circle<H, V, NonNegativeLengthPercentage>,
+    ),
+    Ellipse(
+        #[css(field_bound)]
+        #[shmem(field_bound)]
+        Ellipse<H, V, NonNegativeLengthPercentage>,
+    ),
     Polygon(Polygon<LengthPercentage>),
 }
 
@@ -125,9 +141,11 @@ pub enum BasicShape<H, V, LengthPercentage, NonNegativeLengthPercentage> {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 pub struct InsetRect<LengthPercentage, NonNegativeLengthPercentage> {
     pub rect: Rect<LengthPercentage>,
+    #[shmem(field_bound)]
     pub round: BorderRadius<NonNegativeLengthPercentage>,
 }
 
@@ -145,6 +163,7 @@ pub struct InsetRect<LengthPercentage, NonNegativeLengthPercentage> {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 pub struct Circle<H, V, NonNegativeLengthPercentage> {
     pub position: Position<H, V>,
@@ -165,6 +184,7 @@ pub struct Circle<H, V, NonNegativeLengthPercentage> {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 pub struct Ellipse<H, V, NonNegativeLengthPercentage> {
     pub position: Position<H, V>,
@@ -186,6 +206,7 @@ pub struct Ellipse<H, V, NonNegativeLengthPercentage> {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ShapeRadius<NonNegativeLengthPercentage> {
     Length(NonNegativeLengthPercentage),
@@ -208,6 +229,7 @@ pub enum ShapeRadius<NonNegativeLengthPercentage> {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct Polygon<LengthPercentage> {
     /// The filling rule for a polygon.
@@ -228,6 +250,7 @@ pub struct Polygon<LengthPercentage> {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct PolygonCoord<LengthPercentage>(pub LengthPercentage, pub LengthPercentage);
 
@@ -249,6 +272,7 @@ pub struct PolygonCoord<LengthPercentage>(pub LengthPercentage, pub LengthPercen
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(u8)]
 pub enum FillRule {
@@ -270,6 +294,7 @@ pub enum FillRule {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct Path {
     /// The filling rule for the svg path.

components/style/values/generics/border.rs

@@ -12,7 +12,15 @@ use style_traits::{CssWriter, ToCss};
 
 /// A generic value for a single side of a `border-image-width` property.
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum BorderImageSideWidth<LengthPercentage, Number> {
     /// `<length-or-percentage>`
@@ -25,7 +33,15 @@ pub enum BorderImageSideWidth<LengthPercentage, Number> {
 
 /// A generic value for the `border-image-slice` property.
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 #[repr(C)]
 pub struct GenericBorderImageSlice<NumberOrPercentage> {
@@ -53,9 +69,10 @@ pub use self::GenericBorderImageSlice as BorderImageSlice;
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C)]
-pub struct GenericBorderCornerRadius<L>(#[css(field_bound)] pub Size2D<L>);
+pub struct GenericBorderCornerRadius<L>(#[css(field_bound)] #[shmem(field_bound)] pub Size2D<L>);
 
 pub use self::GenericBorderCornerRadius as BorderCornerRadius;
 
@@ -90,9 +107,10 @@ impl<L: Zero> Zero for BorderCornerRadius<L> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(transparent)]
-pub struct BorderSpacing<L>(#[css(field_bound)] pub Size2D<L>);
+pub struct BorderSpacing<L>(#[css(field_bound)] #[shmem(field_bound)] pub Size2D<L>);
 
 impl<L> BorderSpacing<L> {
     /// Trivially create a `BorderCornerRadius`.
@@ -115,10 +133,12 @@ impl<L> BorderSpacing<L> {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 #[repr(C)]
 pub struct GenericBorderRadius<LengthPercentage> {
     /// The top left radius.
+    #[shmem(field_bound)]
     pub top_left: GenericBorderCornerRadius<LengthPercentage>,
     /// The top right radius.
     pub top_right: GenericBorderCornerRadius<LengthPercentage>,

components/style/values/generics/box.rs

@@ -18,6 +18,7 @@ use crate::values::animated::ToAnimatedZero;
     SpecifiedValueInfo,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum VerticalAlign<LengthPercentage> {
     /// `baseline`
@@ -58,7 +59,9 @@ impl<L> ToAnimatedZero for VerticalAlign<L> {
 }
 
 /// https://drafts.csswg.org/css-animations/#animation-iteration-count
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub enum AnimationIterationCount<Number> {
     /// A `<number>` value.
     Number(Number),
@@ -81,6 +84,7 @@ pub enum AnimationIterationCount<Number> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericPerspective<NonNegativeLength> {

components/style/values/generics/color.rs

@@ -6,7 +6,7 @@
 
 /// Ratios representing the contribution of color and currentcolor to
 /// the final color value.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToShmem)]
 pub struct ComplexColorRatios {
     /// Numeric color contribution.
     pub bg: f32,
@@ -23,7 +23,7 @@ impl ComplexColorRatios {
 
 /// This enum represents a combined color from a numeric color and
 /// the current foreground color (currentcolor keyword).
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToAnimatedValue, ToShmem)]
 pub enum Color<RGBA> {
     ///  Numeric RGBA color.
     Numeric(RGBA),
@@ -90,6 +90,7 @@ impl<RGBA> From<RGBA> for Color<RGBA> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ColorOrAuto<C> {
     /// A `<color>

components/style/values/generics/column.rs

@@ -19,6 +19,7 @@
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ColumnCount<PositiveInteger> {
     /// A positive integer.

components/style/values/generics/counters.rs

@@ -14,7 +14,9 @@ use crate::values::CustomIdent;
 use std::ops::Deref;
 
 /// A name / value pair for counters.
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub struct CounterPair<Integer> {
     /// The name of the counter.
     pub name: CustomIdent,
@@ -24,7 +26,15 @@ pub struct CounterPair<Integer> {
 
 /// A generic value for the `counter-increment` property.
 #[derive(
-    Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Debug,
+    Default,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub struct CounterIncrement<I>(Counters<I>);
 
@@ -47,7 +57,15 @@ impl<I> Deref for CounterIncrement<I> {
 
 /// A generic value for the `counter-set` and `counter-reset` properties.
 #[derive(
-    Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Debug,
+    Default,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub struct CounterSetOrReset<I>(Counters<I>);
 
@@ -71,7 +89,9 @@ impl<I> Deref for CounterSetOrReset<I> {
 /// A generic value for lists of counters.
 ///
 /// Keyword `none` is represented by an empty vector.
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub struct Counters<I>(#[css(iterable, if_empty = "none")] Box<[CounterPair<I>]>);
 
 impl<I> Default for Counters<I> {
@@ -102,7 +122,9 @@ fn is_decimal(counter_type: &CounterStyleType) -> bool {
 /// The specified value for the `content` property.
 ///
 /// https://drafts.csswg.org/css-content/#propdef-content
-#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub enum Content<ImageUrl> {
     /// `normal` reserved keyword.
     Normal,
@@ -124,7 +146,9 @@ impl<ImageUrl> Content<ImageUrl> {
 }
 
 /// Items for the `content` property.
-#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub enum ContentItem<ImageUrl> {
     /// Literal string content.
     String(Box<str>),

components/style/values/generics/easing.rs

@@ -10,7 +10,15 @@ use crate::values::CSSFloat;
 
 /// A generic easing function.
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 #[value_info(ty = "TIMING_FUNCTION")]
 #[repr(u8, C)]
@@ -46,6 +54,7 @@ pub enum TimingFunction<Integer, Number> {
     SpecifiedValueInfo,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(u8)]
 pub enum TimingKeyword {
@@ -69,7 +78,9 @@ fn step_position_jump_enabled(_context: &ParserContext) -> bool {
 
 #[allow(missing_docs)]
 #[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
-#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss, ToShmem,
+)]
 #[repr(u8)]
 pub enum StepPosition {
     #[parse(condition = "step_position_jump_enabled")]

components/style/values/generics/effects.rs

@@ -16,6 +16,7 @@
     ToAnimatedValue,
     ToAnimatedZero,
     ToCss,
+    ToShmem,
 )]
 pub struct BoxShadow<Color, SizeLength, BlurShapeLength, ShapeLength> {
     /// The base shadow.
@@ -41,6 +42,7 @@ pub struct BoxShadow<Color, SizeLength, BlurShapeLength, ShapeLength> {
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum Filter<Angle, Factor, Length, DropShadow, Url> {
     /// `blur(<length>)`
@@ -93,6 +95,7 @@ pub enum Filter<Angle, Factor, Length, DropShadow, Url> {
     ToAnimatedValue,
     ToAnimatedZero,
     ToCss,
+    ToShmem,
 )]
 pub struct SimpleShadow<Color, SizeLength, ShapeLength> {
     /// Color.

components/style/values/generics/flex.rs

@@ -19,6 +19,7 @@
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C)]
 pub enum GenericFlexBasis<S> {

components/style/values/generics/font.rs

@@ -15,7 +15,9 @@ use style_traits::{CssWriter, KeywordsCollectFn, ParseError};
 use style_traits::{SpecifiedValueInfo, StyleParseErrorKind, ToCss};
 
 /// https://drafts.csswg.org/css-fonts-4/#feature-tag-value
-#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(
+    Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem,
+)]
 pub struct FeatureTagValue<Integer> {
     /// A four-character tag, packed into a u32 (one byte per character).
     pub tag: FontTag,
@@ -56,6 +58,7 @@ where
     SpecifiedValueInfo,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct VariationValue<Number> {
     /// A four-character tag, packed into a u32 (one byte per character).
@@ -67,7 +70,9 @@ pub struct VariationValue<Number> {
 
 /// A value both for font-variation-settings and font-feature-settings.
 #[css(comma)]
-#[derive(Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub struct FontSettings<T>(#[css(if_empty = "normal", iterable)] pub Box<[T]>);
 
 impl<T> FontSettings<T> {
@@ -103,7 +108,9 @@ impl<T: Parse> Parse for FontSettings<T> {
 ///   https://drafts.csswg.org/css-fonts-4/#font-variation-settings-def
 ///   https://drafts.csswg.org/css-fonts-4/#descdef-font-face-font-feature-settings
 ///
-#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(
+    Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem,
+)]
 pub struct FontTag(pub u32);
 
 impl ToCss for FontTag {
@@ -149,6 +156,7 @@ impl Parse for FontTag {
     ToAnimatedValue,
     ToAnimatedZero,
     ToCss,
+    ToShmem,
 )]
 /// Additional information for keyword-derived font sizes.
 pub struct KeywordInfo<Length> {
@@ -205,6 +213,7 @@ impl<L> SpecifiedValueInfo for KeywordInfo<L> {
     ToAnimatedValue,
     ToAnimatedZero,
     ToCss,
+    ToShmem,
 )]
 #[allow(missing_docs)]
 pub enum KeywordSize {
@@ -254,6 +263,7 @@ impl Default for KeywordSize {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToAnimatedZero,
+    ToShmem,
 )]
 pub enum FontStyle<Angle> {
     #[animation(error)]

components/style/values/generics/gecko.rs

@@ -7,7 +7,7 @@
 
 /// A generic value for scroll snap points.
 #[cfg_attr(feature = "gecko", derive(MallocSizeOf))]
-#[derive(Clone, Copy, Debug, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem)]
 pub enum ScrollSnapPoint<LengthPercentage> {
     /// `none`
     None,

components/style/values/generics/grid.rs

@@ -18,7 +18,9 @@ use style_traits::{CssWriter, ParseError, StyleParseErrorKind, ToCss};
 /// A `<grid-line>` type.
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-grid-row-start-grid-line>
-#[derive(Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(
+    Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem,
+)]
 pub struct GridLine<Integer> {
     /// Flag to check whether it's a `span` keyword.
     pub is_span: bool,
@@ -162,6 +164,7 @@ impl Parse for GridLine<specified::Integer> {
     SpecifiedValueInfo,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum TrackKeyword {
     Auto,
@@ -174,7 +177,15 @@ pub enum TrackKeyword {
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-track-breadth>
 #[derive(
-    Animate, Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Animate,
+    Clone,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum TrackBreadth<L> {
     /// The generic type is almost always a non-negative `<length-percentage>`
@@ -200,7 +211,7 @@ impl<L> TrackBreadth<L> {
 /// generic only to avoid code bloat. It only takes `<length-percentage>`
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-track-size>
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToShmem)]
 pub enum TrackSize<L> {
     /// A flexible `<track-breadth>`
     Breadth(TrackBreadth<L>),
@@ -358,7 +369,7 @@ where
 /// The initial argument of the `repeat` function.
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-track-repeat>
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub enum RepeatCount<Integer> {
     /// A positive integer. This is allowed only for `<track-repeat>` and `<fixed-repeat>`
     Number(Integer),
@@ -393,7 +404,7 @@ impl Parse for RepeatCount<specified::Integer> {
 ///
 /// It can also hold `repeat()` function parameters, which expands into the respective
 /// values in its computed form.
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem)]
 #[css(function = "repeat")]
 pub struct TrackRepeat<L, I> {
     /// The number of times for the value to be repeated (could also be `auto-fit` or `auto-fill`)
@@ -482,7 +493,15 @@ impl<L: Clone> TrackRepeat<L, specified::Integer> {
 
 /// Track list values. Can be <track-size> or <track-repeat>
 #[derive(
-    Animate, Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Animate,
+    Clone,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum TrackListValue<LengthPercentage, Integer> {
     /// A <track-size> value.
@@ -494,7 +513,7 @@ pub enum TrackListValue<LengthPercentage, Integer> {
 /// The type of a `<track-list>` as determined during parsing.
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-track-list>
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToShmem)]
 pub enum TrackListType {
     /// [`<auto-track-list>`](https://drafts.csswg.org/css-grid/#typedef-auto-track-list)
     ///
@@ -516,7 +535,7 @@ pub enum TrackListType {
 /// A grid `<track-list>` type.
 ///
 /// <https://drafts.csswg.org/css-grid/#typedef-track-list>
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToShmem)]
 pub struct TrackList<LengthPercentage, Integer> {
     /// The type of this `<track-list>` (auto, explicit or general).
     ///
@@ -589,7 +608,9 @@ impl<L: ToCss, I: ToCss> ToCss for TrackList<L, I> {
 ///
 /// `subgrid [ <line-names> | repeat(<positive-integer> | auto-fill, <line-names>+) ]+`
 /// Old spec: https://www.w3.org/TR/2015/WD-css-grid-1-20150917/#typedef-line-name-list
-#[derive(Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(
+    Clone, Debug, Default, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem,
+)]
 pub struct LineNameList {
     /// The optional `<line-name-list>`
     pub names: Box<[Box<[CustomIdent]>]>,
@@ -695,7 +716,15 @@ impl ToCss for LineNameList {
 /// Subgrid deferred to Level 2 spec due to lack of implementation.
 /// But it's implemented in gecko, so we have to as well.
 #[derive(
-    Animate, Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Animate,
+    Clone,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum GridTemplateComponent<L, I> {
     /// `none` value.
@@ -704,6 +733,7 @@ pub enum GridTemplateComponent<L, I> {
     TrackList(
         #[animation(field_bound)]
         #[compute(field_bound)]
+        #[shmem(field_bound)]
         TrackList<L, I>,
     ),
     /// A `subgrid <line-name-list>?`

components/style/values/generics/image.rs

@@ -16,7 +16,7 @@ use style_traits::{CssWriter, ToCss};
 /// An [image].
 ///
 /// [image]: https://drafts.csswg.org/css-images/#image-values
-#[derive(Clone, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(Clone, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem)]
 pub enum Image<Gradient, MozImageRect, ImageUrl> {
     /// A `<url()>` image.
     Url(ImageUrl),
@@ -36,7 +36,7 @@ pub enum Image<Gradient, MozImageRect, ImageUrl> {
 
 /// A CSS gradient.
 /// <https://drafts.csswg.org/css-images/#gradients>
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToShmem)]
 pub struct Gradient<LineDirection, Length, LengthPercentage, Position, Color, Angle> {
     /// Gradients can be linear or radial.
     pub kind: GradientKind<LineDirection, Length, LengthPercentage, Position, Angle>,
@@ -48,7 +48,7 @@ pub struct Gradient<LineDirection, Length, LengthPercentage, Position, Color, An
     pub compat_mode: CompatMode,
 }
 
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToShmem)]
 /// Whether we used the modern notation or the compatibility `-webkit`, `-moz` prefixes.
 pub enum CompatMode {
     /// Modern syntax.
@@ -60,7 +60,7 @@ pub enum CompatMode {
 }
 
 /// A gradient kind.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToShmem)]
 pub enum GradientKind<LineDirection, Length, LengthPercentage, Position, Angle> {
     /// A linear gradient.
     Linear(LineDirection),
@@ -73,7 +73,7 @@ pub enum GradientKind<LineDirection, Length, LengthPercentage, Position, Angle>
 }
 
 /// A radial gradient's ending shape.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub enum EndingShape<Length, LengthPercentage> {
     /// A circular gradient.
     Circle(Circle<Length>),
@@ -82,7 +82,7 @@ pub enum EndingShape<Length, LengthPercentage> {
 }
 
 /// A circle shape.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToShmem)]
 pub enum Circle<Length> {
     /// A circle radius.
     Radius(Length),
@@ -91,7 +91,7 @@ pub enum Circle<Length> {
 }
 
 /// An ellipse shape.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub enum Ellipse<LengthPercentage> {
     /// An ellipse pair of radii.
     Radii(LengthPercentage, LengthPercentage),
@@ -102,7 +102,9 @@ pub enum Ellipse<LengthPercentage> {
 /// <https://drafts.csswg.org/css-images/#typedef-extent-keyword>
 #[allow(missing_docs)]
 #[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
-#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss, ToShmem,
+)]
 pub enum ShapeExtent {
     ClosestSide,
     FarthestSide,
@@ -114,7 +116,7 @@ pub enum ShapeExtent {
 
 /// A gradient item.
 /// <https://drafts.csswg.org/css-images-4/#color-stop-syntax>
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub enum GradientItem<Color, LengthPercentage> {
     /// A color stop.
     ColorStop(ColorStop<Color, LengthPercentage>),
@@ -124,7 +126,7 @@ pub enum GradientItem<Color, LengthPercentage> {
 
 /// A color stop.
 /// <https://drafts.csswg.org/css-images/#typedef-color-stop-list>
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub struct ColorStop<Color, LengthPercentage> {
     /// The color of this stop.
     pub color: Color,
@@ -167,7 +169,9 @@ impl ToCss for PaintWorklet {
 /// `-moz-image-rect(<uri>, top, right, bottom, left);`
 #[allow(missing_docs)]
 #[css(comma, function)]
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 pub struct MozImageRect<NumberOrPercentage, MozImageRectUrl> {
     pub url: MozImageRectUrl,
     pub top: NumberOrPercentage,

components/style/values/generics/length.rs

@@ -26,6 +26,7 @@ use style_traits::ParseError;
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericLengthPercentageOrAuto<LengthPercent> {
@@ -109,6 +110,7 @@ impl<LengthPercentage: Parse> Parse for LengthPercentageOrAuto<LengthPercentage>
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericSize<LengthPercent> {
@@ -150,6 +152,7 @@ impl<LengthPercentage> Size<LengthPercentage> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericMaxSize<LengthPercent> {
@@ -185,6 +188,7 @@ impl<LengthPercentage> MaxSize<LengthPercentage> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericLengthOrNumber<L, N> {

components/style/values/generics/mod.rs

@@ -43,7 +43,9 @@ pub mod url;
 // https://drafts.csswg.org/css-counter-styles/#typedef-symbols-type
 #[allow(missing_docs)]
 #[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
-#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss, ToShmem,
+)]
 pub enum SymbolsType {
     Cyclic,
     Numeric,
@@ -85,7 +87,7 @@ impl SymbolsType {
 /// Since wherever <counter-style> is used, 'none' is a valid value as
 /// well, we combine them into one type to make code simpler.
 #[cfg_attr(feature = "gecko", derive(MallocSizeOf))]
-#[derive(Clone, Debug, Eq, PartialEq, ToComputedValue, ToCss)]
+#[derive(Clone, Debug, Eq, PartialEq, ToComputedValue, ToCss, ToShmem)]
 pub enum CounterStyleOrNone {
     /// `none`
     None,
@@ -173,6 +175,7 @@ impl SpecifiedValueInfo for CounterStyleOrNone {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(transparent)]
 pub struct NonNegative<T>(pub T);
@@ -210,6 +213,7 @@ impl<T: Zero> Zero for NonNegative<T> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct GreaterThanOrEqualToOne<T>(pub T);
 
@@ -227,6 +231,7 @@ pub struct GreaterThanOrEqualToOne<T>(pub T);
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[css(function = "rect", comma)]
 pub struct ClipRect<LengthOrAuto> {

components/style/values/generics/position.rs

@@ -18,6 +18,7 @@
     ToAnimatedValue,
     ToAnimatedZero,
     ToComputedValue,
+    ToShmem,
 )]
 #[repr(C)]
 pub struct GenericPosition<H, V> {
@@ -53,6 +54,7 @@ impl<H, V> Position<H, V> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C, u8)]
 pub enum GenericZIndex<I> {

components/style/values/generics/rect.rs

@@ -22,6 +22,7 @@ use style_traits::{CssWriter, ParseError, ToCss};
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 #[repr(C)]
 pub struct Rect<T>(pub T, pub T, pub T, pub T);

components/style/values/generics/size.rs

@@ -24,6 +24,7 @@ use style_traits::{CssWriter, ParseError, ToCss};
     ToAnimatedZero,
     ToAnimatedValue,
     ToComputedValue,
+    ToShmem,
 )]
 #[allow(missing_docs)]
 #[repr(C)]

components/style/values/generics/svg.rs

@@ -24,6 +24,7 @@ use style_traits::{ParseError, StyleParseErrorKind};
     ToAnimatedValue,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub struct SVGPaint<ColorType, UrlPaintServer> {
     /// The paint source
@@ -50,6 +51,7 @@ pub struct SVGPaint<ColorType, UrlPaintServer> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum SVGPaintKind<ColorType, UrlPaintServer> {
     /// `none`
@@ -142,6 +144,7 @@ impl<ColorType: Parse, UrlPaintServer: Parse> Parse for SVGPaint<ColorType, UrlP
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum SVGLength<L> {
     /// `<length> | <percentage> | <number>`
@@ -162,6 +165,7 @@ pub enum SVGLength<L> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum SVGStrokeDashArray<L> {
     /// `[ <length> | <percentage> | <number> ]#`
@@ -186,6 +190,7 @@ pub enum SVGStrokeDashArray<L> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum SVGOpacity<OpacityType> {
     /// `<opacity-value>`

components/style/values/generics/text.rs

@@ -11,7 +11,15 @@ use style_traits::ParseError;
 
 /// A generic value for the `initial-letter` property.
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum InitialLetter<Number, Integer> {
     /// `normal`
@@ -29,7 +37,9 @@ impl<N, I> InitialLetter<N, I> {
 }
 
 /// A generic spacing value for the `letter-spacing` and `word-spacing` properties.
-#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
+#[derive(
+    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss, ToShmem,
+)]
 pub enum Spacing<Value> {
     /// `normal`
     Normal,
@@ -81,6 +91,7 @@ fn line_height_moz_block_height_enabled(context: &ParserContext) -> bool {
     SpecifiedValueInfo,
     ToAnimatedValue,
     ToCss,
+    ToShmem,
     Parse,
 )]
 #[repr(C, u8)]

components/style/values/generics/transform.rs

@@ -19,7 +19,15 @@ use style_traits::{CssWriter, ToCss};
 /// A generic 2D transformation matrix.
 #[allow(missing_docs)]
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 #[css(comma, function)]
 pub struct Matrix<T> {
@@ -35,7 +43,7 @@ pub struct Matrix<T> {
 #[cfg_attr(rustfmt, rustfmt_skip)]
 #[css(comma, function = "matrix3d")]
 #[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo,
-         ToComputedValue, ToCss)]
+         ToComputedValue, ToCss, ToShmem)]
 pub struct Matrix3D<T> {
     pub m11: T, pub m12: T, pub m13: T, pub m14: T,
     pub m21: T, pub m22: T, pub m23: T, pub m24: T,
@@ -82,6 +90,7 @@ impl<T: Into<f64>> From<Matrix3D<T>> for Transform3D<f64> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 #[repr(C)]
 pub struct GenericTransformOrigin<H, V, Depth> {
@@ -110,7 +119,9 @@ fn is_same<N: PartialEq>(x: &N, y: &N) -> bool {
     x == y
 }
 
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 /// A single operation in the list of a `transform` value
 pub enum TransformOperation<Angle, Number, Length, Integer, LengthPercentage>
 where
@@ -215,7 +226,9 @@ where
     },
 }
 
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss)]
+#[derive(
+    Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss, ToShmem,
+)]
 /// A value of the `transform` property
 pub struct Transform<T>(#[css(if_empty = "none", iterable)] pub Vec<T>);
 
@@ -537,7 +550,15 @@ pub fn get_normalized_vector_and_angle<T: Zero>(
 }
 
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToAnimatedZero, ToComputedValue,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToAnimatedZero,
+    ToComputedValue,
+    ToShmem,
 )]
 /// A value of the `Rotate` property
 ///
@@ -599,7 +620,15 @@ where
 }
 
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToAnimatedZero, ToComputedValue,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToAnimatedZero,
+    ToComputedValue,
+    ToShmem,
 )]
 /// A value of the `Scale` property
 ///
@@ -648,6 +677,7 @@ impl<Number: ToCss + PartialEq> ToCss for Scale<Number> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 /// A value of the `translate` property
 ///
@@ -680,7 +710,16 @@ where
 
 #[allow(missing_docs)]
 #[derive(
-    Clone, Copy, Debug, MallocSizeOf, Parse, PartialEq, SpecifiedValueInfo, ToComputedValue, ToCss,
+    Clone,
+    Copy,
+    Debug,
+    MallocSizeOf,
+    Parse,
+    PartialEq,
+    SpecifiedValueInfo,
+    ToComputedValue,
+    ToCss,
+    ToShmem,
 )]
 pub enum TransformStyle {
     #[cfg(feature = "servo")]

components/style/values/generics/ui.rs

@@ -11,7 +11,7 @@ use values::specified::ui::CursorKind;
 /// A generic value for the `cursor` property.
 ///
 /// https://drafts.csswg.org/css-ui/#cursor
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem)]
 pub struct Cursor<Image> {
     /// The parsed images for the cursor.
     pub images: Box<[Image]>,
@@ -44,7 +44,7 @@ impl<Image: ToCss> ToCss for Cursor<Image> {
 }
 
 /// A generic value for item of `image cursors`.
-#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
+#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue, ToShmem)]
 pub struct CursorImage<ImageUrl, Number> {
     /// The url to parse images from.
     pub url: ImageUrl,
@@ -84,6 +84,7 @@ impl<ImageUrl: ToCss, Number: ToCss> ToCss for CursorImage<ImageUrl, Number> {
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum ScrollbarColor<Color> {
     /// `auto`

components/style/values/generics/url.rs

@@ -18,6 +18,7 @@
     ToAnimatedZero,
     ToComputedValue,
     ToCss,
+    ToShmem,
 )]
 pub enum UrlOrNone<Url> {
     /// `none`