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https://github.com/servo/servo
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Introduce trait Castable
This trait is used to hold onto the downcast and upcast functions of all
castable IDL interfaces. A castable IDL interface is one which either derives
from or is derived by other interfaces.
The deriving relation is represented by implementations of marker trait
DerivedFrom<T: Castable> generated in InheritTypes.
/^[ ]*use dom::bindings::codegen::InheritTypes::.*(Base|Cast|Derived)/ {
/::[a-zA-Z]+(Base|Cast|Derived);/d
s/([{ ])[a-zA-Z]+(Base|Cast|Derived), /\1/g
s/([{ ])[a-zA-Z]+(Base|Cast|Derived), /\1/g
s/, [a-zA-Z]+(Base|Cast|Derived)([},])/\2/g
s/, [a-zA-Z]+(Base|Cast|Derived)([},])/\2/g
/\{([a-zA-Z]+(Base|Cast|Derived))?\};$/d
s/\{([a-zA-Z_]+)\};$/\1;/
}
s/([a-zA-Z]+)Cast::from_ref\(\&?\**([a-zA-Z_]+)(\.r\(\))?\)/\2.upcast::<\1>()/g
s/([a-zA-Z]+)Cast::from_ref\(\&?\**([a-zA-Z_]+)(\.[a-zA-Z_]+\(\))?\)/\2\3.upcast::<\1>()/g
s/\(([a-zA-Z]+)Cast::from_ref\)/\(Castable::upcast::<\1>\)/g
s/([a-zA-Z]+)Cast::from_root/Root::upcast::<\1>/g
s/([a-zA-Z]+)Cast::from_layout_js\(\&([a-zA-Z_.]+)\)/\2.upcast::<\1>()/g
s/([a-zA-Z]+)Cast::to_ref\(\&?\**([a-zA-Z_]+)(\.r\(\))?\)/\2.downcast::<\1>()/g
s/([a-zA-Z]+)Cast::to_ref\(\&?\**([a-zA-Z_]+)(\.[a-zA-Z_]+\(\))?\)/\2\3.downcast::<\1>()/g
s/\(([a-zA-Z]+)Cast::to_ref\)/\(Castable::downcast::<\1>\)/g
s/([a-zA-Z]+)Cast::to_root/Root::downcast::<\1>/g
s/([a-zA-Z]+)Cast::to_layout_js\(&?([a-zA-Z_.]+(\(\))?)\)/\2.downcast::<\1>()/g
s/\.is_document\(\)/.is::<Document>()/g
s/\.is_htmlanchorelement\(\)/.is::<HTMLAnchorElement>()/g
s/\.is_htmlappletelement\(\)/.is::<HTMLAppletElement>()/g
s/\.is_htmlareaelement\(\)/.is::<HTMLAreaElement>()/g
s/\.is_htmlbodyelement\(\)/.is::<HTMLBodyElement>()/g
s/\.is_htmlembedelement\(\)/.is::<HTMLEmbedElement>()/g
s/\.is_htmlfieldsetelement\(\)/.is::<HTMLFieldSetElement>()/g
s/\.is_htmlformelement\(\)/.is::<HTMLFormElement>()/g
s/\.is_htmlframesetelement\(\)/.is::<HTMLFrameSetElement>()/g
s/\.is_htmlhtmlelement\(\)/.is::<HTMLHtmlElement>()/g
s/\.is_htmlimageelement\(\)/.is::<HTMLImageElement>()/g
s/\.is_htmllegendelement\(\)/.is::<HTMLLegendElement>()/g
s/\.is_htmloptgroupelement\(\)/.is::<HTMLOptGroupElement>()/g
s/\.is_htmloptionelement\(\)/.is::<HTMLOptionElement>()/g
s/\.is_htmlscriptelement\(\)/.is::<HTMLScriptElement>()/g
s/\.is_htmltabledatacellelement\(\)/.is::<HTMLTableDataCellElement>()/g
s/\.is_htmltableheadercellelement\(\)/.is::<HTMLTableHeaderCellElement>()/g
s/\.is_htmltablerowelement\(\)/.is::<HTMLTableRowElement>()/g
s/\.is_htmltablesectionelement\(\)/.is::<HTMLTableSectionElement>()/g
s/\.is_htmltitleelement\(\)/.is::<HTMLTitleElement>()/g
This commit is contained in:
@@ -4,10 +4,10 @@
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use dom::attr::Attr;
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use dom::bindings::codegen::Bindings::HTMLBaseElementBinding;
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use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLElementCast};
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use dom::bindings::conversions::Castable;
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use dom::bindings::js::Root;
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use dom::document::Document;
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use dom::element::AttributeMutation;
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use dom::element::{AttributeMutation, Element};
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use dom::htmlelement::HTMLElement;
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use dom::node::{Node, document_from_node};
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use dom::virtualmethods::VirtualMethods;
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@@ -36,7 +36,7 @@ impl HTMLBaseElement {
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/// https://html.spec.whatwg.org/multipage/#frozen-base-url
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pub fn frozen_base_url(&self) -> Url {
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let href = ElementCast::from_ref(self).get_attribute(&ns!(""), &atom!("href"))
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let href = self.upcast::<Element>().get_attribute(&ns!(""), &atom!("href"))
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.expect("The frozen base url is only defined for base elements \
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that have a base url.");
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let document = document_from_node(self);
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@@ -52,7 +52,7 @@ impl HTMLBaseElement {
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return;
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}
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if ElementCast::from_ref(self).has_attribute(&atom!("href")) {
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if self.upcast::<Element>().has_attribute(&atom!("href")) {
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let document = document_from_node(self);
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document.refresh_base_element();
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}
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@@ -61,7 +61,7 @@ impl HTMLBaseElement {
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impl VirtualMethods for HTMLBaseElement {
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fn super_type(&self) -> Option<&VirtualMethods> {
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Some(HTMLElementCast::from_ref(self) as &VirtualMethods)
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Some(self.upcast::<HTMLElement>() as &VirtualMethods)
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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