WithRootErrorHandler.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration.
 */
#include "TError.h"
#include <functional>
#include <type_traits>
 
 
#ifndef ROOTUTILS_WITHROOTERRORHANDLER_H
#define ROOTUTILS_WITHROOTERRORHANDLER_H
 
namespace RootUtils {
 
 
class WithRootErrorHandler
{
public:
  // A ROOT error handler has signature
  //  void hand (int level, Bool_t abort, const char* location, const char* msg)
 
  using Handler_t = std::function<bool (int, Bool_t, const char*, const char*)>;
  
 
  WithRootErrorHandler (Handler_t errhand);
 
 
  ~WithRootErrorHandler();
 
 
  // Try to prevent misuse.
  WithRootErrorHandler (const WithRootErrorHandler&) = delete;
  WithRootErrorHandler (WithRootErrorHandler&&) = delete;
  WithRootErrorHandler& operator= (const WithRootErrorHandler&) = delete;
  WithRootErrorHandler& operator= (WithRootErrorHandler&&) = delete;
 
  static void* operator new   (size_t) = delete;
  static void* operator new[] (size_t) = delete;
  static void  operator delete   (void*) = delete;
  static void  operator delete[] (void*) = delete;
 
 
private:
  size_t m_size;
};
 
 
} // namespace RootUtils
 
#endif // not ROOTUTILS_WITHROOTERRORHANDLER_H