channel.h

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#pragma once

#include <cstddef>
#include <functional>
#include <memory>
#include <system_error>

#include <opc/common/class_pointers.h>

namespace OpcUa
{

class BreakableChannel
{
public:
  virtual ~BreakableChannel() {}
  BreakableChannel() {}
  BreakableChannel(const BreakableChannel &) = delete;
  BreakableChannel(BreakableChannel &&) = delete;
  BreakableChannel & operator=(const BreakableChannel &) = delete;

public:
  virtual void Stop() = 0;
};


class InputChannel : public virtual BreakableChannel
{
public:
  DEFINE_CLASS_POINTERS(InputChannel)

public:
  virtual ~InputChannel() {}
  InputChannel() {}
  InputChannel(const InputChannel &) = delete;
  InputChannel(InputChannel &&) = delete;
  InputChannel & operator=(const InputChannel &) = delete;

public:
  virtual std::size_t Receive(char * data, std::size_t size) = 0;
};


class OutputChannel : public virtual BreakableChannel
{
public:
  DEFINE_CLASS_POINTERS(OutputChannel)

public:
  virtual ~OutputChannel() {}

  OutputChannel() {}
  OutputChannel(const OutputChannel &) = delete;
  OutputChannel(OutputChannel &&) = delete;
  OutputChannel & operator=(const OutputChannel &) = delete;

public:
  virtual void Send(const char * message, std::size_t size) = 0;
};


class IOChannel :
  public InputChannel,
  public OutputChannel
{
public:
  DEFINE_CLASS_POINTERS(IOChannel)
};

}