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// Maria range class -*- c++ -*-
#ifdef __GNUC__
# pragma implementation
#endif // __GNUC__
#include "Range.h"
#include "Value.h"
#include "Printer.h"
/** @file Range.C
* Closed range of values, part of a Constraint
*/
/* 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. */
Range::Range (class Value& low,
class Value& high) :
myLow (&low), myHigh (&high)
{
if (*myHigh < *myLow) {
class Value* v = myLow;
myLow = myHigh;
myHigh = v;
}
else if (myLow != myHigh && *myLow == *myHigh) {
delete myHigh;
myHigh = myLow;
}
}
Range::Range (const class Range& old) :
myLow (old.myLow->copy ()), myHigh (old.myHigh->copy ())
{
assert (*myLow <= *myHigh);
}
Range::~Range ()
{
delete myLow;
if (myLow != myHigh)
delete myHigh;
}
void
Range::setType (const class Type& type)
{
myLow->setType (type);
myHigh->setType (type);
}
class Range*
Range::combine (const class Range& other) const
{
if (*other.myLow <= *myLow && *myHigh <= *other.myHigh)
return new class Range (*other.myLow->copy (), *other.myHigh->copy ());
if (*other.myLow <= *myLow && *myLow <= *other.myHigh)
return new class Range (*other.myLow->copy (), *myHigh->copy ());
if (*other.myLow <= *myHigh && *myHigh <= *other.myHigh)
return new class Range (*myLow->copy (), *other.myHigh->copy ());
if (*myLow <= *other.myLow && *other.myHigh <= *myHigh)
return new class Range (*myLow->copy (), *myHigh->copy ());
class Value* v;
bool adjacent;
v = myHigh->copy ();
adjacent = v->increment () && *v == *other.myLow;
delete v;
if (adjacent)
return new class Range (*myLow->copy (), *other.myHigh->copy ());
v = other.myHigh->copy ();
adjacent = v->increment () && *v == *myLow;
delete v;
if (adjacent)
return new class Range (*other.myLow->copy (), *myHigh->copy ());
return 0;
}
class Range*
Range::cut (const class Range& other) const
{
if (*other.myLow <= *myLow && *myHigh <= *other.myHigh)
return new class Range (*myLow->copy (), *myHigh->copy ());
if (*other.myLow <= *myLow && *myLow <= *other.myHigh)
return new class Range (*myLow->copy (), *other.myHigh->copy ());
if (*other.myLow <= *myHigh && *myHigh <= *other.myHigh)
return new class Range (*other.myLow->copy (), *myHigh->copy ());
if (*myLow <= *other.myLow && *other.myHigh <= *myHigh)
return new class Range (*other.myLow->copy (), *other.myHigh->copy ());
return 0;
}
bool
Range::check (const class Value& value) const
{
return myLow == myHigh
? value == *myLow
: *myLow <= value && value <= *myHigh;
}
void
Range::display (const class Printer& printer) const
{
myLow->display (printer);
if (myLow != myHigh) {
printer.printRaw ("..");
myHigh->display (printer);
}
}
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