GlobalExceptionHandler.h

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// Copyright (c) 2002-2023, The OpenMS Team -- EKU Tuebingen, ETH Zurich, and FU Berlin
// SPDX-License-Identifier: BSD-3-Clause
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg$
// $Authors: Stephan Aiche, Marc Sturm $
// --------------------------------------------------------------------------
 
#pragma once
 
#include <OpenMS/CONCEPT/Types.h>
#include <OpenMS/CONCEPT/Exception.h>
 
#include <string>
 
namespace OpenMS
{
 
  namespace Exception
  {
 
    class OPENMS_DLLAPI GlobalExceptionHandler
    {
private:
 
      GlobalExceptionHandler()
      throw();
 
 
      GlobalExceptionHandler(const GlobalExceptionHandler &) {}
 
      ~GlobalExceptionHandler() {}
public:
 
      static GlobalExceptionHandler & getInstance()
      {
        static GlobalExceptionHandler * globalExceptionHandler_;
 
        if (globalExceptionHandler_ == nullptr)
        {
          globalExceptionHandler_ = new GlobalExceptionHandler;
        }
        return *globalExceptionHandler_;
      }
 
 
      static void setName(const std::string & name)
      throw();
 
      static void setMessage(const std::string & message)
      throw();
 
      static void setLine(int line)
      throw();
 
      static void setFile(const std::string & file)
      throw();
 
      static void setFunction(const std::string & function)
      throw();
 
      static void set(const std::string & file, int line, const std::string & function,
                      const std::string & name, const std::string & message)
      throw();
protected:
 
      static void terminate()
      throw();
 
      static void newHandler();
 
 
      static std::string & file_()
      {
        static std::string * file_ = nullptr;
        if (file_ == nullptr)
        {
          file_  = new std::string;
          *file_ = "unknown";
        }
        return *file_;
      }
 
      static int & line_()
      {
        static int * line_ = nullptr;
        if (line_ == nullptr)
        {
          line_  = new int;
          *line_ = -1;
        }
        return *line_;
      }
 
      static std::string & function_()
      {
        static std::string * function_ = nullptr;
        if (function_ == nullptr)
        {
          function_  = new std::string;
          *function_ = "unknown";
        }
        return *function_;
      }
 
      static std::string & name_()
      {
        static std::string * name_ = nullptr;
        if (name_ == nullptr)
        {
          name_  = new std::string;
          *name_ = "unknown exception";
        }
        return *name_;
      }
 
      static std::string & what_()
      {
        static std::string * what_ = nullptr;
        if (what_ == nullptr)
        {
          what_  = new std::string;
          *what_ = " - ";
        }
        return *what_;
      }
 
    };
 
  } // namespace Exception
 
} // namespace OpenMS