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Add trait DomObjectWrap to provide WRAP function

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This commit is contained in:
YUAN LYU 2020-03-20 22:14:18 -04:00
parent ca29399bab
commit 3ea6d87bcc
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GPG key ID: 63A93E6A451DD166
353 changed files with 327 additions and 1236 deletions
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30
components/script/dom/bindings/reflector.rs
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@ -5,7 +5,8 @@
//! The `Reflector` struct.
use crate::dom::bindings::conversions::DerivedFrom;
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::iterable::{Iterable, IterableIterator};
use crate::dom::bindings::root::{Dom, DomRoot, Root};
use crate::dom::bindings::trace::JSTraceable;
use crate::dom::globalscope::GlobalScope;
use crate::script_runtime::JSContext;
@ -15,17 +16,13 @@ use std::default::Default;
/// Create the reflector for a new DOM object and yield ownership to the
/// reflector.
pub fn reflect_dom_object<T, U>(
obj: Box<T>,
global: &U,
wrap_fn: unsafe fn(JSContext, &GlobalScope, Box<T>) -> DomRoot<T>,
) -> DomRoot<T>
pub fn reflect_dom_object<T, U>(obj: Box<T>, global: &U) -> DomRoot<T>
where
T: DomObject,
T: DomObject + DomObjectWrap,
U: DerivedFrom<GlobalScope>,
{
let global_scope = global.upcast();
unsafe { wrap_fn(global_scope.get_cx(), global_scope, obj) }
unsafe { T::WRAP(global_scope.get_cx(), global_scope, obj) }
}
/// A struct to store a reference to the reflector of a DOM object.
@ -106,3 +103,20 @@ impl MutDomObject for Reflector {
self.set_jsobject(obj)
}
}
/// A trait to provide a function pointer to wrap function for DOM objects.
pub trait DomObjectWrap: Sized + DomObject {
/// Function pointer to the general wrap function type
const WRAP: unsafe fn(JSContext, &GlobalScope, Box<Self>) -> Root<Dom<Self>>;
}
/// A trait to provide a function pointer to wrap function for
/// DOM iterator interfaces.
pub trait DomObjectIteratorWrap: DomObjectWrap + JSTraceable + Iterable {
/// Function pointer to the wrap function for IterableIterator<T>
const ITER_WRAP: unsafe fn(
JSContext,
&GlobalScope,
Box<IterableIterator<Self>>,
) -> Root<Dom<IterableIterator<Self>>>;
}