feat(host): add object publication and dispatch

crates/wip-interface-macros/src/lib.rs

@@ -170,14 +170,8 @@ fn expand_interface(attribute: TokenStream2, item: ItemTrait) -> syn::Result<Tok
             }
         }
 
-        impl #definition_ident {
-            /// Builds the interface descriptor generated from the trait declaration.
-            pub fn descriptor() -> ::wip_interface::wip_protocol::InterfaceDescriptor {
-                <Self as ::wip_interface::InterfaceDefinition>::descriptor()
-            }
-
-            /// Dispatches one validated logical operation call to a typed implementation.
-            pub fn dispatch<T: #trait_ident>(
+        impl<T: #trait_ident> ::wip_interface::InterfaceImplementation<T> for #definition_ident {
+            fn dispatch(
                 implementation: &T,
                 operation: &str,
                 arguments: ::std::vec::Vec<::wip_interface::wip_protocol::NamedValue>,
@@ -197,6 +191,29 @@ fn expand_interface(attribute: TokenStream2, item: ItemTrait) -> syn::Result<Tok
             }
         }
 
+        impl #definition_ident {
+            /// Builds the interface descriptor generated from the trait declaration.
+            pub fn descriptor() -> ::wip_interface::wip_protocol::InterfaceDescriptor {
+                <Self as ::wip_interface::InterfaceDefinition>::descriptor()
+            }
+
+            /// Dispatches one validated logical operation call to a typed implementation.
+            pub fn dispatch<T: #trait_ident>(
+                implementation: &T,
+                operation: &str,
+                arguments: ::std::vec::Vec<::wip_interface::wip_protocol::NamedValue>,
+            ) -> ::std::result::Result<
+                ::std::option::Option<::wip_interface::wip_protocol::Value>,
+                ::wip_interface::DispatchError,
+            > {
+                <Self as ::wip_interface::InterfaceImplementation<T>>::dispatch(
+                    implementation,
+                    operation,
+                    arguments,
+                )
+            }
+        }
+
         #(#argument_items)*
     })
 }