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Fix up the virtual method unsoundness.

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This commit is contained in:
Josh Matthews 2014-04-24 13:01:31 -04:00
parent 895e9ee37f
commit 46a33b4b38
4 changed files with 26 additions and 24 deletions
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4
src/components/script/dom/attr.rs
View file

@ -65,8 +65,8 @@ impl Attr {
}
pub fn set_value(&mut self, set_type: AttrSettingType, value: DOMString) {
let owner = self.owner.root();
let node: &JSRef<Node> = NodeCast::from_ref(&*owner);
let mut owner = self.owner.root();
let node: &mut JSRef<Node> = NodeCast::from_mut_ref(&mut *owner);
let namespace_is_null = self.namespace == namespace::Null;
match set_type {

5
src/components/script/dom/element.rs
View file

@ -301,13 +301,14 @@ impl<'a> AttributeHandlers for JSRef<'a, Element> {
None => (),
Some(idx) => {
{
let node: &JSRef<Node> = NodeCast::from_ref(self);
let node: &mut JSRef<Node> = NodeCast::from_mut_ref(self);
node.wait_until_safe_to_modify_dom();
}
if namespace == namespace::Null {
let removed_raw_value = self.get().attrs.get(idx).root().Value();
vtable_for(NodeCast::from_ref(self)).before_remove_attr(local_name.clone(), removed_raw_value);
vtable_for(NodeCast::from_mut_ref(self))
.before_remove_attr(local_name.clone(), removed_raw_value);
}
self.get_mut().attrs.remove(idx);

13
src/components/script/dom/node.rs
View file

@ -244,24 +244,25 @@ impl<'a> PrivateNodeHelpers for JSRef<'a, Node> {
let document = document_from_node(self).root();
if self.is_in_doc() {
for node in self.traverse_preorder() {
vtable_for(&node).bind_to_tree();
for mut node in self.traverse_preorder() {
vtable_for(&mut node).bind_to_tree();
}
}
self.parent_node().root().map(|parent| vtable_for(&*parent).child_inserted(self));
let mut parent = self.parent_node().root();
parent.as_mut().map(|parent| vtable_for(&mut **parent).child_inserted(self));
document.deref().content_changed();
}
// http://dom.spec.whatwg.org/#node-is-removed
// http://spec.whatwg.org/#node-is-removed
fn node_removed(&self) {
assert!(self.parent_node().is_none());
let document = document_from_node(self).root();
for node in self.traverse_preorder() {
for mut node in self.traverse_preorder() {
// XXX how about if the node wasn't in the tree in the first place?
vtable_for(&node).unbind_from_tree();
vtable_for(&mut node).unbind_from_tree();
}
document.deref().content_changed();

28
src/components/script/dom/virtualmethods.rs
View file

@ -74,34 +74,34 @@ pub trait VirtualMethods {
/// method call on the trait object will invoke the corresponding method on the
/// concrete type, propagating up the parent hierarchy unless otherwise
/// interrupted.
pub fn vtable_for<'a>(node: &JSRef<Node>) -> ~VirtualMethods: {
pub fn vtable_for<'a>(node: &'a mut JSRef<Node>) -> &'a mut VirtualMethods: {
match node.get().type_id {
ElementNodeTypeId(HTMLImageElementTypeId) => {
let element: &JSRef<HTMLImageElement> = HTMLImageElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<HTMLImageElement> = HTMLImageElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
ElementNodeTypeId(HTMLIFrameElementTypeId) => {
let element: &JSRef<HTMLIFrameElement> = HTMLIFrameElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<HTMLIFrameElement> = HTMLIFrameElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
ElementNodeTypeId(HTMLObjectElementTypeId) => {
let element: &JSRef<HTMLObjectElement> = HTMLObjectElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<HTMLObjectElement> = HTMLObjectElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
ElementNodeTypeId(HTMLStyleElementTypeId) => {
let element: &JSRef<HTMLStyleElement> = HTMLStyleElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<HTMLStyleElement> = HTMLStyleElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
ElementNodeTypeId(ElementTypeId) => {
let element: &JSRef<Element> = ElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<Element> = ElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
ElementNodeTypeId(_) => {
let element: &JSRef<HTMLElement> = HTMLElementCast::to_ref(node).unwrap();
~element.clone() as ~VirtualMethods:
let element: &mut JSRef<HTMLElement> = HTMLElementCast::to_mut_ref(node).unwrap();
element as &mut VirtualMethods:
}
_ => {
~node.clone() as ~VirtualMethods:
node as &mut VirtualMethods:
}
}
}