//seems to work fine
public static bool evaluateTerm(Term term, List <Assignment> varVals)
{
string lhs = composeString(term.getLhs(), varVals);
string rhs = composeString(term.getRhs(), varVals);
StringLogicComparator comparator = term.getComparator();
int left = lhs.Length;
int right = rhs.Length;
switch (comparator)
{
case StringLogicComparator.Identical:
return(lhs.Equals(rhs));
case StringLogicComparator.NotIdentical:
return(!lhs.Equals(rhs));
case StringLogicComparator.Equal:
return(left == right);
case StringLogicComparator.Lesser:
return(left < right);
case StringLogicComparator.LesserOrEqual:
return(left <= right);
case StringLogicComparator.Greater:
return(left > right);
case StringLogicComparator.GreaterOrEqual:
return(left >= right);
case StringLogicComparator.NotEqual:
return(left != right);
default:
throw (new Exception("Term parsed with nonexistent comparator."));
}
}
public Term(string[] lhs, string[] rhs, StringLogicComparator comparator)
{
this.lhs = lhs;
this.rhs = rhs;
this.comparator = comparator;
}
