public IAbstractDomain Join(IAbstractDomain a)
{
IAbstractDomain result;
if (AbstractDomainsHelper.TryTrivialJoin(this, a, out result))
{
return(result);
}
BoundedDisjunction <Variable, Expression> asDisjunctionDomain = a as BoundedDisjunction <Variable, Expression>;
Debug.Assert(asDisjunctionDomain != null);
INumericalAbstractDomain <Variable, Expression>[] joinDisjuncts = new INumericalAbstractDomain <Variable, Expression> [this.disjuncts.Length + asDisjunctionDomain.disjuncts.Length];
// Copy both the domains
for (int i = 0; i < this.disjuncts.Length; i++)
{
joinDisjuncts[i] = this.disjuncts[i];
}
for (int i = 0; i < asDisjunctionDomain.disjuncts.Length; i++)
{
joinDisjuncts[this.disjuncts.Length + i] = asDisjunctionDomain.disjuncts[i];
}
return(new BoundedDisjunction <Variable, Expression>(joinDisjuncts));
}
public IAbstractDomain Widening(IAbstractDomain prev)
{
IAbstractDomain result;
if (AbstractDomainsHelper.TryTrivialJoin(this, prev, out result))
{
return(result);
}
BoundedDisjunction <Variable, Expression> asDisjunctionDomain = prev as BoundedDisjunction <Variable, Expression>;
Debug.Assert(asDisjunctionDomain != null);
INumericalAbstractDomain <Variable, Expression> left = SmashTogether(this.disjuncts);
INumericalAbstractDomain <Variable, Expression> right = SmashTogether(asDisjunctionDomain.disjuncts);
return(new BoundedDisjunction <Variable, Expression>((INumericalAbstractDomain <Variable, Expression>)left.Widening(right)));
}
public IAbstractDomain Meet(IAbstractDomain a)
{
IAbstractDomain result;
if (AbstractDomainsHelper.TryTrivialMeet(this, a, out result))
{
return(result);
}
BoundedDisjunction <Variable, Expression> asDisjunctionDomain = a as BoundedDisjunction <Variable, Expression>;
Debug.Assert(asDisjunctionDomain != null);
INumericalAbstractDomain <Variable, Expression> left = SmashTogether(disjuncts);
INumericalAbstractDomain <Variable, Expression> right = SmashTogether(asDisjunctionDomain.disjuncts);
return(new BoundedDisjunction <Variable, Expression>((INumericalAbstractDomain <Variable, Expression>)left.Meet(right)));
}
static private INumericalAbstractDomain <Variable, Expression> SmashTogether(IAbstractDomain boundedDisjunction, bool p)
{
INumericalAbstractDomain <Variable, Expression> asNumericalDomain = (INumericalAbstractDomain <Variable, Expression>)boundedDisjunction;
Debug.Assert(boundedDisjunction != null);
if (p)
{ // It is a
BoundedDisjunction <Variable, Expression> asDisjunction = asNumericalDomain as BoundedDisjunction <Variable, Expression>;
Debug.Assert(asDisjunction != null);
return(SmashTogether(asDisjunction.disjuncts));
}
else
{
return(asNumericalDomain);
}
}