| // Copyright 2022 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| #pragma once |
| |
| #include "pw_rpc/internal/method_info.h" |
| |
| namespace pw::rpc { |
| |
| // Collection of various helpers for RPC calls introspection. For now contains |
| // only MethodRequestType/MethodResponseTypes types to obtain information about |
| // RPC methods request/response types. |
| // |
| // Example. We have an RPC service: |
| // |
| // package some.package; |
| // service SpecialService { |
| // rpc MyMethod(MyMethodRequest) returns (MyMethodResponse) {} |
| // } |
| // |
| // We also have a templated Storage type alias: |
| // |
| // template <auto kMethod> |
| // using Storage = |
| // std::pair<MethodRequestType<kMethod>, MethodResponseType<kMethod>>; |
| // |
| // Storage<some::package::pw_rpc::pwpb::SpecialService::MyMethod> will |
| // instantiate as: |
| // |
| // std::pair<some::package::MyMethodRequest::Message, |
| // some::package::MyMethodResponse::Message>; |
| |
| // Request type for given kMethod. |
| template <auto kMethod> |
| using MethodRequestType = typename internal::MethodInfo<kMethod>::Request; |
| |
| // Response type for given kMethod. |
| template <auto kMethod> |
| using MethodResponseType = typename internal::MethodInfo<kMethod>::Response; |
| |
| } // namespace pw::rpc |
