Format style component.

components/style/invalidation/element/element_wrapper.rs

@@ -46,7 +46,9 @@ pub trait ElementSnapshot: Sized {
     /// Gets the attribute information of the snapshot as a string.
     ///
     /// Only for debugging purposes.
-    fn debug_list_attributes(&self) -> String { String::new() }
+    fn debug_list_attributes(&self) -> String {
+        String::new()
+    }
 
     /// The ID attribute per this snapshot. Should only be called if
     /// `has_attrs()` returns true.
@@ -233,7 +235,8 @@ where
             // :lang() needs to match using the closest ancestor xml:lang="" or
             // lang="" attribtue from snapshots.
             NonTSPseudoClass::Lang(ref lang_arg) => {
-                return self.element
+                return self
+                    .element
                     .match_element_lang(Some(self.get_lang()), lang_arg);
             },
 
@@ -242,12 +245,14 @@ where
 
         let flag = pseudo_class.state_flag();
         if flag.is_empty() {
-            return self.element
+            return self
+                .element
                 .match_non_ts_pseudo_class(pseudo_class, context, &mut |_, _| {});
         }
         match self.snapshot().and_then(|s| s.state()) {
             Some(snapshot_state) => snapshot_state.intersects(flag),
-            None => self.element
+            None => self
+                .element
                 .match_non_ts_pseudo_class(pseudo_class, context, &mut |_, _| {}),
         }
     }

components/style/invalidation/element/invalidation_map.rs

@@ -38,8 +38,10 @@ use smallvec::SmallVec;
 #[derive(Clone, Debug, MallocSizeOf)]
 pub struct Dependency {
     /// The dependency selector.
-    #[cfg_attr(feature = "gecko",
-               ignore_malloc_size_of = "CssRules have primary refs, we measure there")]
+    #[cfg_attr(
+        feature = "gecko",
+        ignore_malloc_size_of = "CssRules have primary refs, we measure there"
+    )]
     #[cfg_attr(feature = "servo", ignore_malloc_size_of = "Arc")]
     pub selector: Selector<SelectorImpl>,
 
@@ -127,8 +129,10 @@ impl SelectorMapEntry for StateDependency {
 pub struct DocumentStateDependency {
     /// The selector that is affected. We don't need to track an offset, since
     /// when it changes it changes for the whole document anyway.
-    #[cfg_attr(feature = "gecko",
-               ignore_malloc_size_of = "CssRules have primary refs, we measure there")]
+    #[cfg_attr(
+        feature = "gecko",
+        ignore_malloc_size_of = "CssRules have primary refs, we measure there"
+    )]
     #[cfg_attr(feature = "servo", ignore_malloc_size_of = "Arc")]
     pub selector: Selector<SelectorImpl>,
     /// The state this dependency is affected by.
@@ -185,7 +189,8 @@ impl InvalidationMap {
 
     /// Returns the number of dependencies stored in the invalidation map.
     pub fn len(&self) -> usize {
-        self.state_affecting_selectors.len() + self.document_state_selectors.len() +
+        self.state_affecting_selectors.len() +
+            self.document_state_selectors.len() +
             self.other_attribute_affecting_selectors.len() +
             self.id_to_selector
                 .iter()

components/style/invalidation/element/restyle_hints.rs

@@ -67,7 +67,8 @@ impl RestyleHint {
     /// Returns whether we need to restyle this element.
     pub fn has_non_animation_invalidations(&self) -> bool {
         self.intersects(
-            RestyleHint::RESTYLE_SELF | RestyleHint::RECASCADE_SELF |
+            RestyleHint::RESTYLE_SELF |
+                RestyleHint::RECASCADE_SELF |
                 (Self::replacements() & !Self::for_animations()),
         )
     }
@@ -119,7 +120,8 @@ impl RestyleHint {
     /// The replacements for the animation cascade levels.
     #[inline]
     pub fn for_animations() -> Self {
-        RestyleHint::RESTYLE_SMIL | RestyleHint::RESTYLE_CSS_ANIMATIONS |
+        RestyleHint::RESTYLE_SMIL |
+            RestyleHint::RESTYLE_CSS_ANIMATIONS |
             RestyleHint::RESTYLE_CSS_TRANSITIONS
     }
 

components/style/invalidation/element/state_and_attributes.rs

@@ -200,17 +200,12 @@ where
                 debug!(" > state: {:?}", state_changes);
             }
             if snapshot.id_changed() {
-                debug!(
-                    " > id changed: +{:?} -{:?}",
-                    id_added,
-                    id_removed
-                );
+                debug!(" > id changed: +{:?} -{:?}", id_added, id_removed);
             }
             if snapshot.class_changed() {
                 debug!(
                     " > class changed: +{:?} -{:?}",
-                    classes_added,
-                    classes_removed
+                    classes_added, classes_removed
                 );
             }
             if snapshot.other_attr_changed() {
@@ -233,7 +228,6 @@ where
                 shadow_rule_datas.push((data, quirks_mode, host.map(|h| h.opaque())))
             });
 
-
         let invalidated_self = {
             let mut collector = Collector {
                 wrapper,
@@ -410,10 +404,7 @@ where
     }
 
     /// Check whether a dependency should be taken into account.
-    fn check_dependency(
-        &mut self,
-        dependency: &Dependency,
-    ) -> bool {
+    fn check_dependency(&mut self, dependency: &Dependency) -> bool {
         let element = &self.element;
         let wrapper = &self.wrapper;
         let matches_now = matches_selector(