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// Empty set expression -*- c++ -*-
#ifdef __GNUC__
# pragma implementation
#endif // __GNUC__
#include "EmptySet.h"
#include "PlaceMarking.h"
#include "Printer.h"
/** @file EmptySet.C
* Literal for empty multi-sets
*/
/* Copyright 1999-2002 Marko Mkel (msmakela@tcs.hut.fi).
This file is part of MARIA, a reachability analyzer and model checker
for high-level Petri nets.
MARIA 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, or (at your option)
any later version.
MARIA 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.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
class PlaceMarking*
EmptySet::meval (const class Valuation&) const
{
return new class PlaceMarking;
}
bool
EmptySet::depends (const class VariableSet&,
bool) const
{
return false;
}
bool
EmptySet::forExpressions (bool (*operation)
(const class Expression&,void*),
void* data) const
{
return
(*operation) (*this, data);
}
void
EmptySet::display (const class Printer& printer) const
{
printer.printRaw ("empty");
}
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