Make PropertyDeclarationBlock fields private

components/style/animation.rs

@@ -418,11 +418,11 @@ fn compute_style_for_animation_step(context: &SharedStyleContext,
             let guard = declarations.read();
 
             // No !important in keyframes.
-            debug_assert!(guard.declarations.iter()
+            debug_assert!(guard.declarations().iter()
                             .all(|&(_, importance)| importance == Importance::Normal));
 
             let iter = || {
-                guard.declarations.iter().rev().map(|&(ref decl, _importance)| decl)
+                guard.declarations().iter().rev().map(|&(ref decl, _importance)| decl)
             };
 
             let computed =

components/style/keyframes.rs

@@ -181,7 +181,7 @@ impl KeyframesStep {
            value: KeyframesStepValue) -> Self {
         let declared_timing_function = match value {
             KeyframesStepValue::Declarations { ref block } => {
-                block.read().declarations.iter().any(|&(ref prop_decl, _)| {
+                block.read().declarations().iter().any(|&(ref prop_decl, _)| {
                     match *prop_decl {
                         PropertyDeclaration::AnimationTimingFunction(..) => true,
                         _ => false,
@@ -249,7 +249,7 @@ fn get_animated_properties(keyframes: &[Arc<RwLock<Keyframe>>]) -> Vec<Transitio
     // it here.
     for keyframe in keyframes {
         let keyframe = keyframe.read();
-        for &(ref declaration, importance) in keyframe.block.read().declarations.iter() {
+        for &(ref declaration, importance) in keyframe.block.read().declarations().iter() {
             assert!(!importance.important());
 
             if let Some(property) = TransitionProperty::from_declaration(declaration) {

components/style/properties/declaration_block.rs

@@ -40,20 +40,13 @@ impl Importance {
     }
 }
 
-impl Default for Importance {
-    #[inline]
-    fn default() -> Self {
-        Importance::Normal
-    }
-}
-
 /// Overridden declarations are skipped.
 #[derive(Debug, PartialEq, Clone)]
 pub struct PropertyDeclarationBlock {
     /// The group of declarations, along with their importance.
     ///
     /// Only deduplicated declarations appear here.
-    pub declarations: Vec<(PropertyDeclaration, Importance)>,
+    declarations: Vec<(PropertyDeclaration, Importance)>,
 
     /// The number of entries in `self.declaration` with `Importance::Important`
     important_count: usize,
@@ -76,6 +69,11 @@ impl PropertyDeclarationBlock {
         }
     }
 
+    /// The declarations in this block
+    pub fn declarations(&self) -> &[(PropertyDeclaration, Importance)] {
+        &self.declarations
+    }
+
     /// Returns wheather this block contains any declaration with `!important`.
     ///
     /// This is based on the `important_count` counter,

components/style/properties/properties.mako.rs

@@ -1817,7 +1817,7 @@ pub fn cascade(viewport_size: Size2D<Au>,
     }).collect::<Vec<_>>();
     let iter_declarations = || {
         lock_guards.iter().flat_map(|&(ref source, source_importance)| {
-            source.declarations.iter()
+            source.declarations().iter()
             // Yield declarations later in source order (with more precedence) first.
             .rev()
             .filter_map(move |&(ref declaration, declaration_importance)| {

components/style/rule_tree/mod.rs

@@ -99,7 +99,7 @@ impl StyleSource {
             let _ = write!(writer, "{:?}", rule.read().selectors);
         }
 
-        let _ = write!(writer, "  -> {:?}", self.read().declarations);
+        let _ = write!(writer, "  -> {:?}", self.read().declarations());
     }
 
     /// Read the style source guard, and obtain thus read access to the

components/style/stylesheets.rs

@@ -534,7 +534,7 @@ impl ToCss for StyleRule {
         let declaration_block = self.block.read();
         try!(declaration_block.to_css(dest));
         // Step 4
-        if declaration_block.declarations.len() > 0 {
+        if declaration_block.declarations().len() > 0 {
             try!(write!(dest, " "));
         }
         // Step 5
@@ -952,7 +952,7 @@ impl<'a> QualifiedRuleParser for TopLevelRuleParser<'a> {
     }
 }
 
-#[derive(Clone)]  // shallow, relatively cheap clone
+#[derive(Clone)]  // shallow, relatively cheap .clone
 struct NestedRuleParser<'a, 'b: 'a> {
     stylesheet_origin: Origin,
     context: &'a ParserContext<'b>,