Qucs-core  0.0.19
exceptionstack.h
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00001 /*
00002  * exceptionstack.h - exception stack class definitions
00003  *
00004  * Copyright (C) 2004 Stefan Jahn <stefan@lkcc.org>
00005  *
00006  * This is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2, or (at your option)
00009  * any later version.
00010  *
00011  * This software is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this package; see the file COPYING.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  *
00021  * $Id$
00022  *
00023  */
00024 
00025 #ifndef __EXCEPTIONSTACK_H__
00026 #define __EXCEPTIONSTACK_H__
00027 
00028 namespace qucs {
00029 
00030 class exception;
00031 
00032 class exceptionstack
00033 {
00034  public:
00035   exceptionstack ();
00036   exceptionstack (const exceptionstack &);
00037   ~exceptionstack ();
00038   void push (exception *);
00039   exception * pop (void);
00040   exception * top (void);
00041   void print (const char * prefix = NULL);
00042 
00043  private:
00044   exception * root;
00045 };
00046 
00047 // Global exception stack.
00048 extern exceptionstack estack;
00049 
00050 } /* namespace qucs */
00051 
00052 // Some macros used with exception handling.
00053 #define try_running()        do {
00054 #define catch_exception()    } while (0); if (estack.top ()) \
00055                                        switch (estack.top()->getCode ())
00056 #define throw_exception(e)   estack.push (e)
00057 #define top_exception()      estack.top ()
00058 #define pop_exception()      estack.pop ()
00059 
00060 #endif /* __EXCEPTIONSTACK_H__ */