gzdoom/src/doomerrors.h
Christoph Oelckers 1e01e6e4df - record all line numbers during function generation. This is useful for error reporting and eventually debugging.
- throw a useful exception when a VM abort occurs, the simple enum was incapable of reporting anything more than the barest minimum, which at least for array index out of bounds errors was insufficient.

The current exception mechanism is still insufficient. It really has to report a proper crash location and print a stack trace to the maximum extent possible. Instead it just prints a message and happily goes on. This is not a good solution.
2016-12-02 17:36:29 +01:00

95 lines
2.7 KiB
C++

/*
** doomerrors.h
** Contains error classes that can be thrown around
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#ifndef __ERRORS_H__
#define __ERRORS_H__
#include <string.h>
#include <stdio.h>
#define MAX_ERRORTEXT 1024
class CDoomError
{
public:
CDoomError ()
{
m_Message[0] = '\0';
}
CDoomError (const char *message)
{
SetMessage (message);
}
void SetMessage (const char *message)
{
strncpy (m_Message, message, MAX_ERRORTEXT-1);
m_Message[MAX_ERRORTEXT-1] = '\0';
}
void AppendMessage(const char *message)
{
size_t len = strlen(m_Message);
strncpy(m_Message + len, message, MAX_ERRORTEXT - 1 - len);
m_Message[MAX_ERRORTEXT - 1] = '\0';
}
const char *GetMessage (void) const
{
if (m_Message[0] != '\0')
return (const char *)m_Message;
else
return NULL;
}
protected:
char m_Message[MAX_ERRORTEXT];
};
class CNoRunExit : public CDoomError
{
};
class CRecoverableError : public CDoomError
{
public:
CRecoverableError() : CDoomError() {}
CRecoverableError(const char *message) : CDoomError(message) {}
};
class CFatalError : public CDoomError
{
public:
CFatalError() : CDoomError() {}
CFatalError(const char *message) : CDoomError(message) {}
};
#endif //__ERRORS_H__