Add class cursor on for all TreeReferences

cursor.h

@@ -0,0 +1,16 @@
+#ifndef CURSOR_H
+#define CURSOR_H
+
+#include "char_layout_node.h"
+#include "tree_node.h"
+#include "tree_reference.h"
+
+class Cursor {
+  template <typename T>
+  friend class TreeReference;
+private:
+  Cursor(TreeNode * node) : m_treeReference(node) {}
+  TreeReference<TreeNode> m_treeReference;
+};
+
+#endif

test.cpp

@@ -1,7 +1,7 @@
 #include "float_node.h"
 #include "char_layout_node.h"
 #include "addition_node.h"
-#include "layout_cursor.h"
+#include "cursor.h"
 #include <stdio.h>
 
 Addition buildAddition() {
@@ -24,13 +24,13 @@ int main() {
   printf("\nCHAR LAYOUT\n");
   CharLayout aChar('a');
   TreePool::sharedPool()->log();
-  LayoutCursor cursor(aChar.pointer());
-  TreePool::sharedPool()->log();
+  Cursor cursor = aChar.cursor();
+/*  TreePool::sharedPool()->log();
   cursor.log();
   bool recompute = false;
   cursor.moveLeft(&recompute);
   cursor.log();
   cursor.moveRight(&recompute);
-  cursor.log();
+  cursor.log();*/
   return 0;
 }

tree_reference.h

@@ -7,8 +7,11 @@
 static inline int min(int i, int j) { return i < j ? i : j; }
 static inline int max(int i, int j) { return i > j ? i : j; }
 
+class Cursor;
+
 template <typename T>
 class TreeReference {
+  friend class Cursor;
 public:
   TreeReference(const TreeReference & tr) {
     int trNodeIdentifier = tr.identifier();
@@ -38,6 +41,8 @@ public:
 
   int identifier() const { return m_identifier; }
 
+  Cursor cursor();
+
   // Hierarchy
   int numberOfChildren() const {
     return node()->numberOfChildren();