Module rpc 

C6.1.D-cpp: DDS-RPC C++ PSM-Codegen.

Spec-Referenz: OMG DDS-RPC 1.0 (formal/16-12-04), §10 — C++ PSM.

This layer emits four building blocks per zerodds_rpc::ServiceDef:

• Service interface — abstract class <Service> with per-method sync + _async signatures plus <Service>HandlerInterface for the server side.
• Requester class — typed <Service>_Requester wrapper that inherits from the generic [dds::rpc::Requester<TIn, TOut>] template and exports a Future<TOut> name_async(TIn) plus TOut name(TIn) API per method.
• Replier class — typed <Service>_Replier wrapper with dispatch_to_handler, which binds a [<Service>HandlerInterface] to method dispatch.
• ServiceTraits — dds::rpc::ServiceTraits<<Service>> specialization with topic names + mapping variant.

The generic templates live under templates/dds-psm-cxx/rpc/{requester,replier,exception,service_traits}.hpp.tmpl and are embedded via include_str!.

Spec §10 coverage

§10 item	Coverage
§10.2 dds::rpc namespace	done — all generated classes live under dds::rpc::*.
§10.3 ServiceTraits	done — specialized per service.
§10.4 Requester template	done — generic + typed per-service wrapper.
§10.5 Replier template	done — generic + typed per-service wrapper + HandlerInterface.
§10.5 operation naming	done — <Service>_<method>_In/Out directly from C6.1.B.
§10.6 RemoteException	done — hierarchy + mapping per IDL exception via emit_remote_exception_class.
§10.7 Promise/Future	done — dds::rpc::Future<T> + Promise<T> as a std::future wrapper.
§10.7 async API	done — <method>_async returns Future<TOut>.

Deliberately not in the crate

• Live-FFI binding to the Rust RPC runtime — source only.
• Promise/Future optimization (skeleton without a listener-style API).
• attribute T name mapping (§7.5.1.1.3) — no attribute slots in the current zerodds_rpc::ServiceDef.
• g++/clang++ compile test — not part of CI.

Functions

emit_remote_exception_class

Emits a concrete RemoteException subclass from an IDL exception E { ... } declaration (spec §10.6).

emit_replier_class

Emits the typed replier class for a service.

emit_requester_class

Emits the typed requester class for a service.

emit_rpc_runtime_headers

Emits the generic RPC header templates (Requester/Replier/ Exception/ServiceTraits) as a merged header block.

emit_service_full_header

Emits a complete RPC service header (interface + requester + replier + ServiceTraits) for a single service.

emit_service_interface

Emits the service interface (abstract class + HandlerInterface).

emit_service_traits

Emits the ServiceTraits<<Service>> specialization (spec §10.3).