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7b16ae26b4
Rather than creating unique types for each pipeline-namespaced index type (eg. MessagePortId, DomExceptionId, etc.), we can create a generic common type that uses a marker to prevent type confusion. This change allows us to reduce the boilerplate code required when implementing serializable/transferable interfaces, since the structured clone implementation can rely on the common type. Testing: Existing WPT tests for serialization and transferring provide coverage. --------- Signed-off-by: Josh Matthews <josh@joshmatthews.net>
39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! Trait representing the concept of [transferable objects]
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//! (<https://html.spec.whatwg.org/multipage/#transferable-objects>).
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use std::collections::HashMap;
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use std::hash::Hash;
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use base::id::NamespaceIndex;
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use crate::dom::bindings::reflector::DomObject;
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::bindings::structuredclone::{StructuredData, StructuredDataReader};
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use crate::dom::globalscope::GlobalScope;
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pub(crate) trait Transferable: DomObject
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where
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Self: Sized,
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{
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type Index: Copy + Eq + Hash;
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type Data;
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fn can_transfer(&self) -> bool {
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true
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}
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fn transfer(&self) -> Result<(NamespaceIndex<Self::Index>, Self::Data), ()>;
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fn transfer_receive(
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owner: &GlobalScope,
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id: NamespaceIndex<Self::Index>,
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serialized: Self::Data,
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) -> Result<DomRoot<Self>, ()>;
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fn serialized_storage(
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data: StructuredData<'_>,
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) -> &mut Option<HashMap<NamespaceIndex<Self::Index>, Self::Data>>;
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fn deserialized_storage(reader: &mut StructuredDataReader) -> &mut Option<Vec<DomRoot<Self>>>;
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}
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