public override void Visit(TermNode node)
{
Term term;
IAstTreeNode clauseRoot;
if (node.Parent is NegationNode)
{
term = new Term(node, false);
clauseRoot = node.Parent.Parent;
}
else if (node.Parent is OrNode || node.Parent is L1Expression)
{
term = new Term(node, true);
clauseRoot = node.Parent;
}
else if (node.Parent is AndNode)
{
term = new Term(node, true);
clauseRoot = node;
}
else
{
throw new NotSupportedException(String.Format(
"Not a CNF or fatal error: '{0}", node.Parent));
}
if (!_clauses.ContainsKey(clauseRoot)) _clauses[clauseRoot] = new Clause();
_clauses[clauseRoot].Terms.Add(term);
}
public virtual void Visit(TermNode node){}
public override void Visit(TermNode node)
{
writer.WriteLine(node.ToString());
// writer.WriteLine(node.Token);
}
public Term(TermNode node, bool polarity)
{
Polarity = polarity;
TermNode = node;
}
public Term(TermNode node)
:this(node, node.Parent == null ? true : !(node.Parent is NegationNode))
{
}
protected virtual IAstTreeNode Xform(TermNode node) { return null; }
public sealed override void Visit(TermNode node) { VisitAndXform(node, Xform(node)); }