I want to create a factory, that returns AVLNode, if BinaryTree is AVLTree, and Node if the tree is not AVL. I have following code:
#include "BinaryTree.h"
#include "AVLTree.h"
class NodeFactory {
public :
template <class T>
static Node<T>* getNode(BinaryTree<T>* tree);
};
template <class T>
Node<T>* NodeFactory::getNode(BinaryTree<T>* tree) {
if (tree->isAVL()) {
return new AVLNode<T>();
} else {
return new Node<T>();
}
}
UPD: (this is BinaryTree.h)
template <class T> class Node;
template <class T> class BinaryTree {
public:
BinaryTree() {
_isAVL = false;
root = new Node<T>();
}
bool isAVL() {
return _isAVL;
}
private:
T elem;
Node<T>* root;
bool _isAVL;
};
template <class T> class Node {
public:
Node() {
left = NULL;
right = NULL;
}
T get() {
return elem;
}
void setRight(const T elem) {
right = new Node<T>();
right->set(elem);
}
void setLeft(const T elem) {
left = new Node<T>();
left->set(elem);
}
private:
T elem;
Node* left;
Node* right;
};
I removed almost all methods to make code more readable.
Now i have this error during compilation: "expected initializer before '<' token". Also Qt do not highlights in Node, but highlights in BinaryTree
