FrameworkExceptions.h

#pragma once
/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#include <boost/format.hpp>
 
namespace Belle2 {
#define BELLE2_DEFINE_EXCEPTION(ClassName, Message) \
  class ClassName : public std::runtime_error { \
  public: \
    ClassName(): std::runtime_error(""), m_format(Message) { } \
    ~ClassName() noexcept {} \
    virtual const char * what() const noexcept override { \
      m_finalStr = m_format.str();\
      return m_finalStr.c_str();\
    }\
    template <class T> ClassName& operator<<(const T& param) {\
      m_format % param;\
      return *this;\
    }\
  private:\
    boost::format m_format;\
    mutable std::string m_finalStr;\
  };
}