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std_except.hh

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#ifndef _STD_EXCEPT_HH_
#define _STD_EXCEPT_HH_

#include <exception>
#include <string>

using namespace std;

void handle_exception(const exception&);

class StandardException : public exception {
public:
  StandardException(const string& fname = string(), int ln = 0, 
                    const string& msg = string())
    { MakeMessage(fname,ln,msg); BuildBacktrace(); }
  virtual ~StandardException() {}
  virtual const char *what() const { return message.c_str(); };
protected:
  string message;
  string bt;

  void MakeMessage(const string& file, int line, const string& msg);
  void BuildBacktrace();
};

//void ThrowException(const exception&);

class StandardMemoryExhaustException : public StandardException {
public:
  StandardMemoryExhaustException() : StandardException() {};
  StandardMemoryExhaustException(const string& fname, int ln, 
                                 const string& msg = string())
    : StandardException(fname, ln, head()+msg) {}
  const char *head() const {
    return "Cannot allocate memory:  Memory full.\n";};
};

class StandardDivisionByZeroException : public StandardException {
public:
  StandardDivisionByZeroException() : StandardException() {};
  StandardDivisionByZeroException(const string& fname, int ln,
                                  const string& msg = string())
    : StandardException(fname, ln, head()+msg) {}
  const char *head() const {return "Division by zero.\n";};
};

#endif

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