rust: qom: add default definitions for ObjectImpl

Remove a bunch of duplicate const definitions.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

rust/hw/char/pl011/src/device.rs

@@ -109,10 +109,7 @@ impl ObjectImpl for PL011State {
     const TYPE_INFO: qemu_api::bindings::TypeInfo = qemu_api::type_info! { Self };
     const TYPE_NAME: &'static CStr = crate::TYPE_PL011;
     const PARENT_TYPE_NAME: Option<&'static CStr> = Some(TYPE_SYS_BUS_DEVICE);
-    const ABSTRACT: bool = false;
     const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = Some(pl011_init);
-    const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
-    const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
 }
 
 #[repr(C)]
@@ -666,8 +663,5 @@ impl ObjectImpl for PL011Luminary {
     const TYPE_INFO: qemu_api::bindings::TypeInfo = qemu_api::type_info! { Self };
     const TYPE_NAME: &'static CStr = crate::TYPE_PL011_LUMINARY;
     const PARENT_TYPE_NAME: Option<&'static CStr> = Some(crate::TYPE_PL011);
-    const ABSTRACT: bool = false;
     const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = Some(pl011_luminary_init);
-    const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
-    const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
 }

rust/qemu-api/src/definitions.rs

@@ -14,10 +14,10 @@ pub trait ObjectImpl {
     const TYPE_INFO: TypeInfo;
     const TYPE_NAME: &'static CStr;
     const PARENT_TYPE_NAME: Option<&'static CStr>;
-    const ABSTRACT: bool;
-    const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)>;
-    const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)>;
-    const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)>;
+    const ABSTRACT: bool = false;
+    const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
+    const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
+    const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
 }
 
 pub trait Class {

rust/qemu-api/tests/tests.rs

@@ -58,10 +58,6 @@ impl ObjectImpl for DummyState {
         const TYPE_INFO: qemu_api::bindings::TypeInfo = qemu_api::type_info! { Self };
         const TYPE_NAME: &'static CStr = c_str!("dummy");
         const PARENT_TYPE_NAME: Option<&'static CStr> = Some(device_class::TYPE_DEVICE);
-        const ABSTRACT: bool = false;
-        const INSTANCE_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
-        const INSTANCE_POST_INIT: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
-        const INSTANCE_FINALIZE: Option<unsafe extern "C" fn(obj: *mut Object)> = None;
     }
 
     impl Class for DummyClass {