From 7bd8e3ef63330e870cf4644d21c285cce35c703d Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 31 Oct 2024 09:56:15 +0100 Subject: rust: qom: split ObjectType from ObjectImpl trait Define a separate trait for fields that also applies to classes that are defined by C code. This makes it possible to add metadata to core classes, which has multiple uses: - it makes it possible to access the parent struct's TYPE_* for types that are defined in Rust code, and to avoid repeating it in every subclass - implementors of ObjectType will be allowed to implement the IsA<> trait and therefore to perform typesafe casts from one class to another. - in the future, an ObjectType could be created with Foo::new() in a type-safe manner, without having to pass a TYPE_* constant. Reviewed-by: Zhao Liu Signed-off-by: Paolo Bonzini --- rust/qemu-api/src/prelude.rs | 2 ++ 1 file changed, 2 insertions(+) (limited to 'rust/qemu-api/src/prelude.rs') diff --git a/rust/qemu-api/src/prelude.rs b/rust/qemu-api/src/prelude.rs index a39e228bab..1b8677b2d9 100644 --- a/rust/qemu-api/src/prelude.rs +++ b/rust/qemu-api/src/prelude.rs @@ -6,3 +6,5 @@ pub use crate::bitops::IntegerExt; pub use crate::cell::BqlCell; pub use crate::cell::BqlRefCell; + +pub use crate::definitions::ObjectType; -- cgit 1.4.1