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// Copyright 2021 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/call.h"
namespace pw::rpc {
// The Writer class allows writing requests or responses to a streaming RPC.
// ClientWriter, ClientReaderWriter, ServerWriter, and ServerReaderWriter
// classes can be used as a generic Writer.
class Writer : private internal::Call {
public:
// Writers cannot be created directly. They may only be used as a reference to
// an existing call object.
Writer() = delete;
Writer(const Writer&) = delete;
Writer(Writer&&) = delete;
Writer& operator=(const Writer&) = delete;
Writer& operator=(Writer&&) = delete;
using internal::Call::active;
using internal::Call::channel_id;
using internal::Call::Write;
private:
friend class internal::Call;
};
namespace internal {
constexpr Call::operator Writer&() { return static_cast<Writer&>(*this); }
constexpr Call::operator const Writer&() const {
return static_cast<const Writer&>(*this);
}
} // namespace internal
} // namespace pw::rpc
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