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Introduce IDLInterface::derives()

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This method is given a DOMClass value and returns whether it derives from Self.

Interfaces with no descendants directly check whether the given DOMClass is the
same as their own.
This commit is contained in:
Anthony Ramine 2015-10-06 02:59:38 +02:00
parent 7fb3c51bbb
commit c77d3b965f
3 changed files with 35 additions and 41 deletions
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7
components/script/dom/bindings/utils.rs
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@ -8,7 +8,7 @@ use dom::bindings::codegen::InheritTypes::TopTypeId;
use dom::bindings::codegen::PrototypeList;
use dom::bindings::codegen::PrototypeList::MAX_PROTO_CHAIN_LENGTH;
use dom::bindings::conversions::native_from_handleobject;
use dom::bindings::conversions::private_from_proto_chain;
use dom::bindings::conversions::private_from_proto_check;
use dom::bindings::conversions::{is_dom_class, jsstring_to_str};
use dom::bindings::error::throw_type_error;
use dom::bindings::error::{Error, ErrorResult, Fallible, throw_invalid_this};
@ -755,7 +755,10 @@ unsafe fn generic_call(cx: *mut JSContext, argc: libc::c_uint, vp: *mut JSVal,
let info = RUST_FUNCTION_VALUE_TO_JITINFO(JS_CALLEE(cx, vp));
let proto_id = (*info).protoID;
let depth = (*info).depth;
let this = match private_from_proto_chain(obj.ptr, proto_id, depth) {
let proto_check = |class: &'static DOMClass| {
class.interface_chain[depth as usize] as u16 == proto_id
};
let this = match private_from_proto_check(obj.ptr, proto_check) {
Ok(val) => val,
Err(()) => {
if is_lenient {