Move get_attr and get_attrs into TElementAttributes.

These methods are only called on LayoutElement.

components/layout/fragment.rs

@@ -40,7 +40,7 @@ use string_cache::Atom;
 use style::computed_values::content::ContentItem;
 use style::computed_values::{border_collapse, clear, mix_blend_mode, overflow_wrap, position};
 use style::computed_values::{text_align, text_decoration, white_space, word_break};
-use style::node::{TElement, TNode};
+use style::node::TNode;
 use style::properties::{self, ComputedValues, cascade_anonymous};
 use style::values::computed::{LengthOrPercentage, LengthOrPercentageOrAuto};
 use style::values::computed::{LengthOrPercentageOrNone};

components/layout/wrapper.rs

@@ -536,18 +536,6 @@ impl<'le> TElement<'le> for LayoutElement<'le> {
         self.element.namespace()
     }
 
-    #[inline]
-    fn get_attr(self, namespace: &Namespace, name: &Atom) -> Option<&'le str> {
-        unsafe { self.element.get_attr_val_for_layout(namespace, name) }
-    }
-
-    #[inline]
-    fn get_attrs(self, name: &Atom) -> Vec<&'le str> {
-        unsafe {
-            self.element.get_attr_vals_for_layout(name)
-        }
-    }
-
     fn get_link(self) -> Option<&'le str> {
         // FIXME: This is HTML only.
         let node: &Node = NodeCast::from_actual(self.element);
@@ -650,7 +638,7 @@ impl<'le> TElement<'le> for LayoutElement<'le> {
     }
 }
 
-impl<'le> TElementAttributes for LayoutElement<'le> {
+impl<'le> TElementAttributes<'le> for LayoutElement<'le> {
     fn synthesize_presentational_hints_for_legacy_attributes<V>(self, hints: &mut V)
         where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>
     {
@@ -676,6 +664,18 @@ impl<'le> TElementAttributes for LayoutElement<'le> {
             self.element.get_unsigned_integer_attribute_for_layout(attribute)
         }
     }
+
+    #[inline]
+    fn get_attr(self, namespace: &Namespace, name: &Atom) -> Option<&'le str> {
+        unsafe { self.element.get_attr_val_for_layout(namespace, name) }
+    }
+
+    #[inline]
+    fn get_attrs(self, name: &Atom) -> Vec<&'le str> {
+        unsafe {
+            self.element.get_attr_vals_for_layout(name)
+        }
+    }
 }
 
 fn get_content(content_list: &content::T) -> Vec<ContentItem> {

components/script/dom/element.rs

@@ -1495,27 +1495,6 @@ impl<'a> VirtualMethods for JSRef<'a, Element> {
 
 impl<'a> style::node::TElement<'a> for JSRef<'a, Element> {
     #[allow(unsafe_code)]
-    fn get_attr(self, namespace: &Namespace, local_name: &Atom) -> Option<&'a str> {
-        self.get_attribute(namespace, local_name).root().map(|attr| {
-            // This transmute is used to cheat the lifetime restriction.
-            // FIXME(https://github.com/rust-lang/rust/issues/23338)
-            let attr = attr.r();
-            let value: &str = &**attr.value();
-            unsafe { mem::transmute(value) }
-        })
-    }
-    #[allow(unsafe_code)]
-    fn get_attrs(self, local_name: &Atom) -> Vec<&'a str> {
-        let mut attributes = RootedVec::new();
-        self.get_attributes(local_name, &mut attributes);
-        attributes.iter().map(|attr| attr.root()).map(|attr| {
-            // FIXME(https://github.com/rust-lang/rust/issues/23338)
-            let attr = attr.r();
-            let value: &str = &**attr.value();
-            // This transmute is used to cheat the lifetime restriction.
-            unsafe { mem::transmute(value) }
-        }).collect()
-    }
     fn get_link(self) -> Option<&'a str> {
         // FIXME: This is HTML only.
         let node: JSRef<Node> = NodeCast::from_ref(self);
@@ -1523,7 +1502,15 @@ impl<'a> style::node::TElement<'a> for JSRef<'a, Element> {
             // https://html.spec.whatwg.org/multipage/#selector-link
             NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLAnchorElement)) |
             NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLAreaElement)) |
-            NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLinkElement)) => self.get_attr(&ns!(""), &atom!("href")),
+            NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLinkElement)) => {
+                self.get_attribute(&ns!(""), &atom!("href")).root().map(|attr| {
+                    // This transmute is used to cheat the lifetime restriction.
+                    // FIXME(https://github.com/rust-lang/rust/issues/23338)
+                    let attr = attr.r();
+                    let value: &str = &**attr.value();
+                    unsafe { mem::transmute(value) }
+                })
+            },
             _ => None,
          }
     }

components/servo/Cargo.lock

@@ -1055,7 +1055,7 @@ dependencies = [
 [[package]]
 name = "selectors"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-selectors#1fda09bf0c59acfcb697f71b38dad22108b3d27a"
+source = "git+https://github.com/servo/rust-selectors#31e13ceb0e4128e0782490cf683443f93a2289be"
 dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",

components/style/legacy.rs

@@ -63,7 +63,7 @@ pub trait PresentationalHintSynthesis {
                                                              matching_rules_list: &mut V,
                                                              shareable: &mut bool)
                                                              where N: TNode<'a>,
-                                                                   N::Element: TElementAttributes,
+                                                                   N::Element: TElementAttributes<'a>,
                                                                    V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
     /// Synthesizes rules for the legacy `border` attribute.
     fn synthesize_presentational_hint_for_legacy_border_attribute<'a,E,V>(
@@ -73,7 +73,7 @@ pub trait PresentationalHintSynthesis {
                                                                   shareable: &mut bool)
                                                                   where
                                                                     E: TElement<'a> +
-                                                                       TElementAttributes,
+                                                                       TElementAttributes<'a>,
                                                                     V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
 }
 
@@ -84,7 +84,7 @@ impl PresentationalHintSynthesis for Stylist {
                                                              matching_rules_list: &mut V,
                                                              shareable: &mut bool)
                                                              where N: TNode<'a>,
-                                                                   N::Element: TElementAttributes,
+                                                                   N::Element: TElementAttributes<'a>,
                                                                    V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>> {
         let element = node.as_element();
 
@@ -199,7 +199,7 @@ impl PresentationalHintSynthesis for Stylist {
                                                                   shareable: &mut bool)
                                                                   where
                                                                     E: TElement<'a> +
-                                                                       TElementAttributes,
+                                                                       TElementAttributes<'a>,
                                                                     V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>> {
         match element.get_unsigned_integer_attribute(UnsignedIntegerAttribute::Border) {
             None => {}

components/style/node.rs

@@ -12,11 +12,15 @@ use util::str::LengthOrPercentageOrAuto;
 
 use selectors::matching::DeclarationBlock;
 pub use selectors::tree::{TNode, TElement};
+use string_cache::{Atom, Namespace};
 
-pub trait TElementAttributes : Copy {
+pub trait TElementAttributes<'a> : Copy {
     fn synthesize_presentational_hints_for_legacy_attributes<V>(self, &mut V)
         where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
     fn get_length_attribute(self, attribute: LengthAttribute) -> LengthOrPercentageOrAuto;
     fn get_integer_attribute(self, attribute: IntegerAttribute) -> Option<i32>;
     fn get_unsigned_integer_attribute(self, attribute: UnsignedIntegerAttribute) -> Option<u32>;
+
+    fn get_attr(self, namespace: &Namespace, attr: &Atom) -> Option<&'a str>;
+    fn get_attrs(self, attr: &Atom) -> Vec<&'a str>;
 }

components/style/selector_matching.rs

@@ -182,7 +182,7 @@ impl Stylist {
                                         applicable_declarations: &mut V)
                                         -> bool
                                         where N: TNode<'a>,
-                                              N::Element: TElementAttributes,
+                                              N::Element: TElementAttributes<'a>,
                                               V: VecLike<DeclarationBlock> {
         assert!(!self.is_dirty);
         assert!(element.is_element());

ports/cef/Cargo.lock

@@ -1037,7 +1037,7 @@ dependencies = [
 [[package]]
 name = "selectors"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-selectors#1fda09bf0c59acfcb697f71b38dad22108b3d27a"
+source = "git+https://github.com/servo/rust-selectors#31e13ceb0e4128e0782490cf683443f93a2289be"
 dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",

ports/gonk/Cargo.lock

@@ -908,7 +908,7 @@ dependencies = [
 [[package]]
 name = "selectors"
 version = "0.1.0"
-source = "git+https://github.com/servo/rust-selectors#1fda09bf0c59acfcb697f71b38dad22108b3d27a"
+source = "git+https://github.com/servo/rust-selectors#31e13ceb0e4128e0782490cf683443f93a2289be"
 dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",