#include "BinNodes.h"
virtual bool BinNode::isLeaf () {return left ==right;}
BinNode::BinNode (Token &t, BinNode *l, BinNode *r) {
   t.copy(info);
   left = l;
   right = r;
}
Token &BinNode::val() { Token *t =new Token; info.copy(*t); return *t;}
BinNode * BinNode::leftChild () { return left;}
BinNode * BinNode::rightChild () { return right;}