// This will render the tree
// Here's an example on how the tree can be read
// so this function ONLY reads the end result after all is said and
// done
double resolve(Node traverse)
{
double evaluation = 0;
if (traverse is constNode)
{
return((traverse as constNode).value);
}
else if (traverse is VarNode)
{
return(m_vars[(traverse as VarNode).Name]);
}
// The only other thing traverse could be would be an OpNode
else
{
OpNode on = (traverse as OpNode);
if (on.Op == '+')
{
evaluation += resolve(on.Left) + resolve(on.Right);
}
else if (on.Op == '-')
{
evaluation += resolve(on.Left) - resolve(on.Right);
}
else if (on.Op == '*')
{
evaluation += resolve(on.Left) * resolve(on.Right);
}
else
{
evaluation += resolve(on.Left) / resolve(on.Right);
}
}
return(evaluation);
}
// This function builds the node tree
// I grab the least precedent tuple that holds the operator and its
// location and place it on the tree, I go through the whole list
// until it's exhausted, I will then add the variables/constants
Node Compile(string exp)
{
OpNode traverse;
// If this is null that means we have no operators thus we only
// have a constant or a variable
if (OpPrecedence(Ops) == null)
{
return(BuildSimple(exp));
}
Tuple <char, OP, int, int> ToBeNode = OpPrecedence(Ops);
// This will grab the least precedent Op
//
OpNode root = new OpNode(ToBeNode.Item1);
// Now that the 'root' node has been established I can traverse
// and determine how
//int index = 0;// GetOpIndex(exp);
//if (-1 == index)
// return BuildSimple(exp);
//OpNode root = new OpNode(exp[index]);
//root.Left = Compile(exp.Substring(0, index));
//root.Right = Compile(exp.Substring(index + 1));
//return root;
}
