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// Arc class -*- c++ -*-
#ifndef ARC_H_
# define ARC_H_
# ifdef __GNUC__
# pragma interface
# endif // __GNUC__
/** @file Arc.h
* Labelled arc in a net
*/
/* Copyright 1998-2003 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. */
/** Arc between a Place and a Transition labelled with Marking expression */
class Arc
{
public:
/** Constructor
* @param output Flag: is this an output arc?
* @param expr Arc expression (formal tokens)
* @param place Place associated with the arc
* @param copy Flag: is this a copied definition?
*/
Arc (bool output,
class Marking& expr,
const class Place& place,
bool copy = false);
private:
/** Copy constructor */
Arc (const class Arc& old);
/** Assignment operator */
class Arc& operator= (const class Arc& old);
public:
/** Destructor */
~Arc ();
/** Determine whether this is an output arc */
bool isOutput () const { return myIsOutput; }
/** Get the arc expression */
const class Marking& getExpr () const { return *myExpr; }
/** Substitute the arc expression
* @param substitution the variable substitutions
*/
void substitute (class Substitution& substitution);
/** Get the place associated with this arc */
const class Place& getPlace () const { return myPlace; }
/** Get the index number of the place associated with this arc */
unsigned getIndex () const { return myIndex; }
/** Determine whether this is a copied arc definition */
bool isCopy () const { return myCopy; }
/** Append an expression to the arc
* @param expr expression to be appended
*/
void append (class Marking& expr);
private:
/** Flag: is this an output arc? */
bool myIsOutput;
/** Arc expression (formal tokens) */
class Marking* myExpr;
/** Place associated with the Arc */
const class Place& myPlace;
/** Index number of the place in the net */
const unsigned myIndex;
/** Flag: is this a copied arc definition? */
const bool myCopy;
};
#endif // ARC_H_
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