style: Store the Rust QuotePair slice as the computed quotes value in…

… Gecko style structs.

Depends on D10651

Differential Revision: https://phabricator.services.mozilla.com/D10652

components/style/gecko/arc_types.rs

@@ -27,6 +27,7 @@ use gecko_bindings::structs::RawServoCssUrlData;
 use gecko_bindings::structs::RawServoDeclarationBlock;
 use gecko_bindings::structs::RawServoFontFaceRule;
 use gecko_bindings::structs::RawServoMediaList;
+use gecko_bindings::structs::RawServoQuotes;
 use gecko_bindings::structs::RawServoStyleRule;
 use gecko_bindings::structs::RawServoStyleSheetContents;
 use gecko_bindings::sugar::ownership::{HasArcFFI, HasFFI, Strong};
@@ -41,6 +42,7 @@ use stylesheets::keyframes_rule::Keyframe;
 use stylesheets::{CounterStyleRule, CssRules, FontFaceRule, FontFeatureValuesRule};
 use stylesheets::{DocumentRule, ImportRule, KeyframesRule, MediaRule, NamespaceRule, PageRule};
 use stylesheets::{StyleRule, StylesheetContents, SupportsRule};
+use values::computed::QuotePair;
 
 macro_rules! impl_arc_ffi {
     ($servo_type:ty => $gecko_type:ty[$addref:ident, $release:ident]) => {
@@ -115,6 +117,9 @@ impl_arc_ffi!(Locked<CounterStyleRule> => RawServoCounterStyleRule
 impl_arc_ffi!(CssUrlData => RawServoCssUrlData
               [Servo_CssUrlData_AddRef, Servo_CssUrlData_Release]);
 
+impl_arc_ffi!(Box<[QuotePair]> => RawServoQuotes
+              [Servo_Quotes_AddRef, Servo_Quotes_Release]);
+
 // RuleNode is a Arc-like type but it does not use Arc.
 
 impl StrongRuleNode {

components/style/gecko_bindings/sugar/refptr.rs

@@ -211,6 +211,16 @@ impl<T: RefCounted> structs::RefPtr<T> {
 }
 
 impl<T> structs::RefPtr<T> {
+    /// Sets the contents to an `Arc<T>`, releasing the old value in `self` if
+    /// necessary.
+    pub fn set_arc<U>(&mut self, other: Arc<U>)
+    where
+        U: HasArcFFI<FFIType = T>,
+    {
+        unsafe { U::release_opt(self.mRawPtr.as_ref()); }
+        self.set_arc_leaky(other);
+    }
+
     /// Sets the contents to an Arc<T>
     /// will leak existing contents
     pub fn set_arc_leaky<U>(&mut self, other: Arc<U>)
@@ -277,11 +287,6 @@ impl_threadsafe_refcount!(
     bindings::Gecko_AddRefURLExtraDataArbitraryThread,
     bindings::Gecko_ReleaseURLExtraDataArbitraryThread
 );
-impl_threadsafe_refcount!(
-    structs::nsStyleQuoteValues,
-    bindings::Gecko_AddRefQuoteValuesArbitraryThread,
-    bindings::Gecko_ReleaseQuoteValuesArbitraryThread
-);
 impl_threadsafe_refcount!(
     structs::nsCSSValueSharedList,
     bindings::Gecko_AddRefCSSValueSharedListArbitraryThread,

components/style/properties/gecko.mako.rs

@@ -4180,41 +4180,25 @@ fn static_assert() {
     }
 
     pub fn set_quotes(&mut self, other: longhands::quotes::computed_value::T) {
-        use gecko_bindings::bindings::Gecko_NewStyleQuoteValues;
-        use gecko_bindings::sugar::refptr::UniqueRefPtr;
-
-        let mut refptr = unsafe {
-            UniqueRefPtr::from_addrefed(Gecko_NewStyleQuoteValues(other.0.len() as u32))
-        };
-
-        for (servo, gecko) in other.0.iter().zip(refptr.mQuotePairs.iter_mut()) {
-            gecko.first.assign_str(&servo.opening);
-            gecko.second.assign_str(&servo.closing);
-        }
-
-        self.gecko.mQuotes.set_move(refptr.get())
+        self.gecko.mQuotes.set_arc(other.0.clone());
     }
 
     pub fn copy_quotes_from(&mut self, other: &Self) {
-        unsafe { self.gecko.mQuotes.set(&other.gecko.mQuotes); }
+        self.set_quotes(other.clone_quotes());
     }
 
     pub fn reset_quotes(&mut self, other: &Self) {
         self.copy_quotes_from(other)
     }
 
     pub fn clone_quotes(&self) -> longhands::quotes::computed_value::T {
-        unsafe {
-            let ref gecko_quote_values = *self.gecko.mQuotes.mRawPtr;
-            longhands::quotes::computed_value::T(Arc::new(
-                gecko_quote_values.mQuotePairs.iter().map(|gecko_pair| {
-                    values::specified::QuotePair {
-                        opening: gecko_pair.first.to_string().into_boxed_str(),
-                        closing: gecko_pair.second.to_string().into_boxed_str(),
-                    }
-                }).collect::<Vec<_>>().into_boxed_slice()
-            ))
-        }
+        use gecko_bindings::sugar::ownership::HasArcFFI;
+        use values::computed::QuotePair;
+
+        let quote_pairs = unsafe { &*self.gecko.mQuotes.mRawPtr };
+        longhands::quotes::computed_value::T(
+            Box::<[QuotePair]>::as_arc(&quote_pairs).clone_arc()
+        )
     }
 
     #[allow(non_snake_case)]

components/style/values/computed/list.rs

@@ -9,7 +9,6 @@ pub use values::specified::list::ListStyleType;
 pub use values::specified::list::{QuotePair, Quotes};
 
 use servo_arc::Arc;
-use values::specified::list::QuotePair;
 
 lazy_static! {
     static ref INITIAL_QUOTES: Arc<Box<[QuotePair]>> = Arc::new(