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VSLErr.C
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C/C++ Source or Header
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1998-11-23
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102 lines
// $Id: VSLErr.C,v 1.11 1998/11/23 17:43:44 zeller Exp $
// VSLLib error handling
// Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
// Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
//
// This file is part of DDD.
//
// DDD is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// DDD is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with DDD -- see the file COPYING.
// If not, write to the Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// DDD is the data display debugger.
// For details, see the DDD World-Wide-Web page,
// `http://www.cs.tu-bs.de/softech/ddd/',
// or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
char VSLErr_rcsid[] =
"$Id: VSLErr.C,v 1.11 1998/11/23 17:43:44 zeller Exp $";
#include <iostream.h>
#include <strstream.h>
#include "strclass.h"
#include "VSLLib.h"
#include "VSLDef.h"
// General error interface
// Error handling
void VSLLib::echo(const string& msg)
{
cerr << msg << '\n';
}
// Evaluation errors
void VSLLib::eval_echo(const string& errmsg, const VSLDef *d)
{
if (d == 0 && VSLDef::backtrace)
{
// Find topmost def
for (int i = 0; VSLDef::backtrace[i] != 0; i++)
d = VSLDef::backtrace[i];
}
// Issue error message
if (d)
echo(d->longname() + ": " + errmsg);
else
echo(errmsg);
// Issue backtrace if desired
if (VSLDef::backtrace && VSLDef::backtrace[0])
{
static char line[] = "------------------------------";
echo(line);
echo("Current stack:");
int i;
for (i = 0; VSLDef::backtrace[i] != 0; i++)
;
for (i--; i >= 0; i--)
{
ostrstream os;
os << i << " -- " << VSLDef::backtrace[i]->longname()
<< *VSLDef::backtrace_args[i];
echo(os);
}
echo(line);
}
}
// Error during evaluation
void VSLLib::eval_error(const string& errmsg, const VSLDef *d)
{
eval_echo(errmsg, d);
}
// Warning during evaluation
void VSLLib::eval_warning(const string& errmsg, const VSLDef *d)
{
eval_echo("warning: " + errmsg, d);
}