responder.h

// Copyright 2023 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 <utility>
 
#include "pw_bytes/span.h"
#include "pw_function/function.h"
#include "pw_status/status.h"
 
namespace pw::spi {
 
class Responder {
 public:
  virtual ~Responder() = default;
 
  void SetCompletionHandler(Function<void(ByteSpan, Status)> callback) {
    DoSetCompletionHandler(std::move(callback));
  }
 
  Status WriteReadAsync(ConstByteSpan tx_data, ByteSpan rx_data) {
    return DoWriteReadAsync(tx_data, rx_data);
  }
 
  void Cancel() { DoCancel(); }
 
 private:
  virtual void DoSetCompletionHandler(
      Function<void(ByteSpan, Status)> callback) = 0;
  virtual Status DoWriteReadAsync(ConstByteSpan tx_data, ByteSpan rx_data) = 0;
  virtual void DoCancel() = 0;
};
 
}  // namespace pw::spi