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