Auto merge of #12263 - servo:stable-geckolib, r=nox

Make geckolib possible to build on stable Rust

<!-- Please describe your changes on the following line: -->

More for https://github.com/servo/servo/issues/11815

r? @nox

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because _____

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This change is [<img src="https://reviewable.io/review_button.svg" height="35" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/12263)
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components/style/keyframes.rs

@@ -10,7 +10,8 @@ use std::sync::Arc;
 
 /// A number from 1 to 100, indicating the percentage of the animation where
 /// this keyframe should run.
-#[derive(Debug, Copy, Clone, PartialEq, PartialOrd, HeapSizeOf)]
+#[derive(Debug, Copy, Clone, PartialEq, PartialOrd)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct KeyframePercentage(pub f32);
 
 impl ::std::cmp::Ord for KeyframePercentage {
@@ -49,7 +50,8 @@ impl KeyframePercentage {
 
 /// A keyframes selector is a list of percentages or from/to symbols, which are
 /// converted at parse time to percentages.
-#[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct KeyframeSelector(Vec<KeyframePercentage>);
 impl KeyframeSelector {
     #[inline]
@@ -64,7 +66,8 @@ impl KeyframeSelector {
 }
 
 /// A keyframe.
-#[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct Keyframe {
     pub selector: KeyframeSelector,
     pub declarations: Arc<Vec<PropertyDeclaration>>,
@@ -95,14 +98,16 @@ impl Keyframe {
 /// is, one autogenerated from the current computed values, or a list of
 /// declarations to apply.
 // TODO: Find a better name for this?
-#[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub enum KeyframesStepValue {
     Declarations(Arc<Vec<PropertyDeclaration>>),
     ComputedValues,
 }
 
 /// A single step from a keyframe animation.
-#[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct KeyframesStep {
     /// The percentage of the animation duration when this step starts.
     pub start_percentage: KeyframePercentage,
@@ -126,7 +131,8 @@ impl KeyframesStep {
 /// of keyframes, in order.
 ///
 /// It only takes into account animable properties.
-#[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct KeyframesAnimation {
     pub steps: Vec<KeyframesStep>,
     /// The properties that change in this animation.

components/style/properties/helpers.mako.rs

@@ -206,7 +206,8 @@
             use cssparser::ToCss;
             use std::fmt;
 
-            #[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+            #[derive(Debug, Clone, PartialEq)]
+            #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
             pub struct T(pub Vec<${to_camel_case(name)}>);
 
             impl ToCss for T {

components/style/properties/helpers/animated_properties.mako.rs

@@ -34,7 +34,8 @@ use values::computed::{CalcLengthOrPercentage, LengthOrPercentage};
 
 // NB: This needs to be here because it needs all the longhands generated
 // beforehand.
-#[derive(Copy, Clone, Debug, PartialEq, HeapSizeOf)]
+#[derive(Copy, Clone, Debug, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub enum TransitionProperty {
     All,
     % for prop in data.longhands:
@@ -92,7 +93,8 @@ impl ToCss for TransitionProperty {
     }
 }
 
-#[derive(Clone, Debug, PartialEq, HeapSizeOf)]
+#[derive(Clone, Debug, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub enum AnimatedProperty {
     % for prop in data.longhands:
         % if prop.animatable:

components/style/properties/longhand/box.mako.rs

@@ -618,7 +618,8 @@ ${helpers.single_keyword("overflow-x", "visible hidden scroll auto",
 
         pub use string_cache::Atom as SingleComputedValue;
 
-        #[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+        #[derive(Debug, Clone, PartialEq)]
+        #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
         pub struct T(pub Vec<Atom>);
 
         impl ToCss for T {
@@ -683,7 +684,8 @@ ${helpers.single_keyword("overflow-x", "visible hidden scroll auto",
 
         pub use self::AnimationIterationCount as SingleComputedValue;
 
-        #[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+        #[derive(Debug, Clone, PartialEq)]
+        #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
         pub enum AnimationIterationCount {
             Number(u32),
             Infinite,
@@ -698,7 +700,8 @@ ${helpers.single_keyword("overflow-x", "visible hidden scroll auto",
             }
         }
 
-        #[derive(Debug, Clone, PartialEq, HeapSizeOf)]
+        #[derive(Debug, Clone, PartialEq)]
+        #[cfg_attr(feature = "servo", derive(HeapSizeOf))]
         pub struct T(pub Vec<AnimationIterationCount>);
 
         impl ToCss for T {

components/style/stylesheets.rs

@@ -67,7 +67,8 @@ pub enum CSSRule<Impl: SelectorImpl> {
 }
 
 
-#[derive(Debug, HeapSizeOf, PartialEq)]
+#[derive(Debug, PartialEq)]
+#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
 pub struct KeyframesRule {
     pub name: Atom,
     pub keyframes: Vec<Keyframe>,

ports/geckolib/Cargo.toml

@@ -18,6 +18,7 @@ default = ["servo_features"]
 # recompiled when building both Servo and geckolib in the same source tree.
 servo_features = [
   "heapsize",
+  "selectors/unstable",
   "style/servo",
   "time",
   "url/query_encoding",
@@ -36,7 +37,7 @@ lazy_static = "0.2"
 libc = "0.2"
 log = {version = "0.3.5", features = ["release_max_level_info"]}
 num_cpus = "0.2.2"
-selectors = {version = "0.6", features = ["unstable"]}
+selectors = "0.6"
 smallvec = "0.1"
 string_cache = {version = "0.2.20", features = ["unstable"]}
 style = {path = "../../components/style", features = ["gecko"]}