ToolHandle.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef ASGTOOLS_TOOLHANDLE_H
#define ASGTOOLS_TOOLHANDLE_H
 
// Local include(s):
#ifndef XAOD_STANDALONE
#   include "GaudiKernel/ToolHandle.h"
#else // not XAOD_STANDALONE
 
// System include(s):
#include <string>
#include <iosfwd>
 
// Local include(s):
#include "AsgMessaging/StatusCode.h"
 
class INamedInterface;
 
class ToolHandleBase {
 
public:
   ToolHandleBase( const std::string& typeAndName = "", INamedInterface* parent = 0 );
 
   const std::string& typeAndName() const;
   const std::string& type() const;
   const std::string& name() const;
   const std::string& parentName() const;
   INamedInterface *parent() const noexcept;
 
   void setTypeAndName(const std::string& typeAndName);
   void setName(const std::string& name);
 
protected:
   std::string m_typeAndName;
   std::string m_type;
   std::string m_name;
   INamedInterface *m_parent;
 
}; // class ToolHandleBase
 
template< class T >
class ToolHandle : public ToolHandleBase {
 
public:
   typedef T value_type;
 
   ToolHandle( T* ptool = 0 );
 
   ToolHandle( const std::string& toolname, INamedInterface* parent = 0 );
 
   template<typename T2>
   ToolHandle (T2 *parent, const std::string& propertyName,
               const std::string& toolName,
               const std::string& propertyTitle = "");
 
   T& operator*();
   const T& operator*() const;
   T* operator->();
   const T* operator->() const;
 
   StatusCode retrieve() const;
 
   void disable () noexcept;
 
   bool empty() const;
 
   bool isSet() const;
 
private:
   mutable T* m_ptool {nullptr};
 
}; // class ToolHandle
 
template< class T >
std::ostream& operator<< ( std::ostream& out,
                           const ToolHandle< T >& handle );
 
// Include the implementation of the code:
#include "AsgTools/ToolHandle.icc"
 
#endif // not XAOD_STANDALONE
#endif // ASGTOOLS_TOOLHANDLE_H