Code clean up.

[SXSI/XMLTree.git] / libcds / src / static_sequence / wt_node_internal.cpp

diff --git a/libcds/src/static_sequence/wt_node_internal.cpp b/libcds/src/static_sequence/wt_node_internal.cpp
index ca21c73..0232a73 100644 (file)
--- a/libcds/src/static_sequence/wt_node_internal.cpp
+++ b/libcds/src/static_sequence/wt_node_internal.cpp
@@ -207,42 +207,22 @@ uint wt_node_internal::access(uint pos) {
 // Returns the value at given position and its rank
 uint wt_node_internal::access(uint pos, uint &rank) 
 {
-    // p is the internal node we are pointing our finger at each step
-    wt_node_internal *p = this;
-
-    while(1)
+    bool is_set = bitmap->access(pos);
+    if(!is_set)
     {
-        bool is_set = p->bitmap->access(pos);
-//        cout << "is_set = " << is_set << ", pos = " << pos << ", rank0 = " << bitmap->rank0(pos) << ", rank1 = " << bitmap->rank1(pos) << endl;
-        if(!is_set)
-        {
-            // recurse left
-            pos = p->bitmap->rank0(pos)-1;
-            wt_node_internal *tmp = dynamic_cast<wt_node_internal *>(p->left_child);
-            if (tmp == NULL)
-            {
-                // it's a leaf
-                rank = pos+1;
-                return p->left_child->access(0);
-            }
-            p = tmp; // new internal node
-        } 
-        else 
-        {
-            // recurse right
-            pos = p->bitmap->rank1(pos)-1;
-            wt_node_internal *tmp = dynamic_cast<wt_node_internal *>(p->right_child);
-            if (tmp == NULL)
-            {
-                // it's a leaf
-                rank = pos+1;
-                return p->right_child->access(0);
-            }
-            p = tmp; // new internal node
-        }
+        // recurse left
+        pos = bitmap->rank0(pos)-1;
+        return left_child->access(pos, rank);
+    } 
+    else 
+    {
+        // recurse right
+        pos = bitmap->rank1(pos)-1;
+        return right_child->access(pos, rank);
     }
 }
 
+
 void wt_node_internal::access(vector<int> &result, uint i, uint j, uint min, uint max, uint l, uint pivot)
 {
     uint symbol = pivot | (1 << l);