| // Copyright 2020 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_union.h" |
| |
| namespace pw::rpc::internal { |
| |
| // Gets information about a service and method at compile-time. Uses a pointer |
| // to a member function of the service implementation to identify the service |
| // class, generated service class, and Method object. |
| template <auto lookup_function, auto impl_method, uint32_t method_id> |
| class ServiceMethodTraits { |
| public: |
| ServiceMethodTraits() = delete; |
| |
| // Type of the service implementation derived class. |
| using Service = MethodService<impl_method>; |
| |
| using MethodImpl = MethodImplementation<impl_method>; |
| |
| // Reference to the Method object corresponding to this method. |
| static constexpr const MethodImpl& method() { |
| return *lookup_function(method_id); |
| } |
| |
| static_assert(lookup_function(method_id) != nullptr, |
| "The selected function is not an RPC service method"); |
| }; |
| |
| } // namespace pw::rpc::internal |