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Unit.h
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/*******************************************************************************
*
* File: Unit.h
*
* Contents: Declaration of Unit base-class.
*
* Copyright 2017
*
* Author: David Juhasz (david.juhasz@tuwien.ac.at)
*
******************************************************************************/
#ifndef ROSA_CORE_UNIT_H
#define ROSA_CORE_UNIT_H
#include "rosa/support/atom.hpp"
#include <ostream>
#include <string>
namespace rosa {
// Forward declarations.
class System;
// Base class for every entity in the system that has to be identified and
// traced.
// NOTE: Life-cycle of Unit instances is supposed to be managed by a System, do
// not create and destroy a Unit directly.
class Unit {
public:
// Identifies the kind of the Unit.
// NOTE: Kind is dependent on the owning System.
const AtomValue Kind;
// System-assigned unique identifier of the Unit instance,
// based on the static member field CountUnits.
const size_t Id;
// Textual identifier of the Unit instance. Defaults to a text referring to
// the Id value of the Unit, unless otherwise defined via a constructor
// argument. The Name of a Unit is not necessarily unique in the system.
const std::string Name;
protected:
// The owning System.
System &S;
public:
// Full qualified name of the Unit instance.
const std::string FullName;
public:
// Ctor.
// PRE: !Name.empty()
Unit(const AtomValue Kind, const size_t Id, const std::string &Name,
System &S) noexcept;
// No copy and move.
Unit(const Unit &) = delete;
Unit(Unit &&) = delete;
Unit &operator=(const Unit &) = delete;
Unit &operator=(Unit &&) = delete;
// Dtor.
virtual ~Unit(void);
// Dumping the object into a string for tracing purposes,
// subclasses are supposed to override this function.
virtual std::string dump(void) const noexcept;
protected:
// Returns a reference to the owning System.
// NOTE: Subclasses may override the function to return a reference of a
// special System subtype.
virtual System &system() const noexcept;
};
// Helper function dumping the given Unit instance to the given output stream.
std::ostream &operator<<(std::ostream &OS, const Unit &U);
} // End namespace rosa
#endif // ROSA_CORE_UNIT_H

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