#ifndef _ERROR_HANDLER_H_
#define _ERROR_HANDLER_H_

#include "global.h"

/*
 * ErrorHandler Class
 *
 * This class takes care of registering & unregistering functions and 
 * providing feedback to the programmer when errors occur. 
 *
 * Here are the debug levels:
 *
 * 0 - The class does nothing.
 * 1 - The class outputs error messages on fatal errors.
 * 2 - The class also outputs where a fatal error occurred.
 * 3 - The class also outputs logged event messages.
 * 4 - The class also outputs a full rundown of where an error occurred
 *     or where an event occurred
 * 5 - The class also outputs on each function call and return.
 *
 */

typedef struct _function_registry {
  char *function_name;
  struct _function_registry *next;
} function_registry;


class ErrorHandler {

public:
  ErrorHandler(int debug_level);
  ~ErrorHandler();
  
  // It's like a stack machine, so here we have push and pop respectively.
  
  void Register(char *func_name);
  void Unregister();
  void Error(char *error_string);
  void LogEvent(char *event);

private:  
  void print_registry();

  int depth;
  int debug;
  function_registry *reg;
};

#endif /* _ERROR_HANDLER_H_ */