/* public EqualityFormula substituteEq(Substitution s)
* {
* return new EqualityFormula(t1.substitute(s), t2.substitute(s));
* }*/
public EqualityFormula substituteEq(Substitution s)
{
var newArgs = new List <ITerm>();
if (TermTuple.substitute(s, args, newArgs))
{
return(new EqualityFormula(newArgs[0], newArgs[1]));
}
else
{
return(this);
}
// foreach (var a in args)
// newArgs.Add(a.substitute(s));
}
public PredicateApplication substitutePA(Substitution s)
{
var newArgs = new List <ITerm>();
if (TermTuple.substitute(s, args, newArgs))
{
return(new PredicateApplication(predicate, newArgs));
}
else
{
return(this);
}
// foreach (var a in args)
// newArgs.Add(a.substitute(s));
}
public ITerm substitute(Substitution s)
{
if (!freeVariables.Intersect(s.domain).Any())
{
return(this);
}
var nts = new List <ITerm>();
if (TermTuple.substitute(s, args, nts))
{
return(new FunctionApplicationFormula(function, nts));
}
else
{
return(this);
}
}