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// Global marking (PlaceMarking for each place) -*- c++ -*-
#ifndef GLOBALMARKING_H_
# define GLOBALMARKING_H_
# ifdef __GNUC__
# pragma interface
# endif // __GNUC__
# include "PlaceMarking.h"
# include "BitBuffer.h"
/** @file GlobalMarking.h
* Assignment of markings for each place
*/
/* 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 Net;
/** Global marking (PlaceMarking for each place) */
class GlobalMarking
{
public:
/** Constructor */
explicit GlobalMarking (const class Net& net);
/** Copy constructor */
explicit GlobalMarking (const class GlobalMarking& old);
/** Assignment operator */
class GlobalMarking& operator= (const class GlobalMarking& old);
/** Destructor */
~GlobalMarking ();
# ifndef NDEBUG
/** Get the net associated with the marking */
const class Net& getNet () const { return myNet; }
# endif // NDEBUG
/** Get the number of place markings */
unsigned getSize () const { return mySize; }
/** Get a PlaceMarking by place number */
class PlaceMarking& operator[] (unsigned i) {
assert (i < mySize);
return myPlaceMarkings[i];
}
/** Get a PlaceMarking by place number */
const class PlaceMarking& operator[] (unsigned i) const {
return (*const_cast<class GlobalMarking*>(this))[i];
}
/** Get a PlaceMarking by place */
class PlaceMarking& operator[] (const class Place& place);
/** Get a PlaceMarking by place */
const class PlaceMarking& operator[] (const class Place& place) const {
return (*const_cast<class GlobalMarking*>(this))[place];
}
/** Flag the state erroneous */
void flagErroneous () { myErroneous = true; }
/** Determine whether the state is erroneous */
bool isErroneous () const { return myErroneous; }
#ifndef NDEBUG
/** Equality comparison
* @param other object to be compared with
* @return true if the objects are equal
*/
bool operator== (const class GlobalMarking& other) const {
assert (&myNet == &other.myNet && mySize == other.mySize);
for (unsigned i = 0; i < mySize; i++)
if (!(myPlaceMarkings[i] == other.myPlaceMarkings[i]))
return false;
return true;
}
#endif // NDEBUG
/** Encode this marking
* @param buf buffer to receive the encoded marking
* @param m0 initial marking of the system
* @param errorplace placeholder for the identity of an erroneous place
* @return false in case of an integrity violation
*/
bool encode (class BitPacker& buf,
const class GlobalMarking& m0,
card_t* errorplace) const;
/** Encode this marking to a subnet marking
* @param buf buffer to receive the encoded marking
* @param net the subnet
*/
void encode (class BitPacker& buf,
const class Net& net) const;
/** Decode a marking to this
* @param m0 initial marking of the system
* @param data the word-aligned encoded representation
* @param propBits number of bits needed for presenting the property state
* @return the property state number, or 0 if propBits == 0
*/
unsigned decode (const class GlobalMarking& m0,
const word_t* data,
unsigned propBits = 0);
/** Decode a subnet marking to this, replacing the place markings
* @param net the subnet
* @param data the word-aligned encoded representation
*/
void decode (const class Net& net,
const word_t* data);
/** Compute the markings of implicit places
* @param m0 initial marking of the system
*/
void computeImplicit (const class GlobalMarking& m0);
/** Evaluate a Boolean condition
* @param cond the condition expression (state proposition)
* @return true if the condition holds; false otherwise
*/
bool eval (const class Expression& cond) const;
/** Display this object
* @param printer The printer object
*/
void display (const class Printer& printer) const;
private:
# ifndef NDEBUG
/** The net this marking belongs to */
const class Net& myNet;
# endif // NDEBUG
/** Flag: is the marking erroneous (is an erroneous transition enabled?) */
bool myErroneous;
/** Number of place markings (or places in the net) */
unsigned mySize;
/** The place markings */
class PlaceMarking* myPlaceMarkings;
};
#endif // GLOBALMARKING_H_
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