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/*
* File: error.h
* -------------
* This file defines the <code>ErrorException</code> class and the
* <code>error</code> function.
*/
#ifndef _error_h
#define _error_h
#include <string>
#include <exception>
/*
* Class: ErrorException
* ---------------------
* This exception is thrown by calls to the <code>error</code>
* function. Typical code for catching errors looks like this:
*
*<pre>
* try {
* ... code in which an error might occur ...
* } catch (ErrorException & ex) {
* ... code to handle the error condition ...
* }
*</pre>
*
* If an <code>ErrorException</code> is thrown at any point in the
* range of the <code>try</code> (including in functions called from
* that code), control will jump immediately to the error handler.
*/
class ErrorException : public std::exception {
public:
ErrorException(std::string msg);
virtual ~ErrorException() throw ();
virtual std::string getMessage() const;
virtual const char *what() const throw ();
private:
std::string msg;
};
/*
* Function: error
* Usage: error(msg);
* ------------------
* Signals an error condition in a program by throwing an
* <code>ErrorException</code> with the specified message.
*/
void error(std::string msg);
#include "private/main.h"
#endif
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