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//type signature for primitive types
#include <iostream>
#include <memory>
#include <vector>

//forward declaration
class RadObject;

typedef std::shared_ptr<RadObject> RadPtr;

enum RadType
{
	RadType_Int,
	RadType_String,
	RadType_Bool,
	RadType_Reaction,
	RadType_Stream
};

class RadObject
{
private:
	RadType type;
public:
	RadObject();
	~RadObject();

	RadType getType()
	{
		return type;
	}
	void setType(RadType type)
	{
		type = type;
	}
	
};

class RadInt: public RadObject
{
public:
  long value;
  RadInt(long val): value(val)
  {
    setType(RadType_Int);
  }
};

class RadStream: public RadObject
{
private:
  std::vector<RadPtr> items;
public:
  RadStream()
  {
    setType(RadType_Stream);
  }
  
  void append(RadPtr rptr)
  {
    items.push_back(rptr);
  }
};

int main()
{
  std::cout << "hello" << "\n";
}