X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=libcds%2Fsrc%2Fstatic_sequence%2Fwt_node.h;h=7bfa975140ecdc463820853e9591440421a2b977;hb=05dbf4eefc4fbf2c53cda4491428849ef248e2f3;hp=14ea05c9f6cf30aa673fd24028fca34e3743a3f8;hpb=0bf9688e2615a9fc07860c5762240e4ce26ee5d3;p=SXSI%2FXMLTree.git

diff --git a/libcds/src/static_sequence/wt_node.h b/libcds/src/static_sequence/wt_node.h
index 14ea05c..7bfa975 100644
--- a/libcds/src/static_sequence/wt_node.h
+++ b/libcds/src/static_sequence/wt_node.h
@@ -29,13 +29,23 @@
 #define WT_NODE_INTERNAL_HDR 2
 #define WT_NODE_LEAF_HDR 3
 
-
+/** Base clase for nodes in the wavelet tree  
+ * 
+ *  @author Francisco Claude
+ */
 class wt_node {
 	public:
     virtual ~wt_node() {} 
 		virtual uint rank(uint symbol, uint pos, uint l, wt_coder * c)=0;
+		virtual uint rankLessThan(uint &symbol, uint pos, uint level, wt_coder * c) = 0;
+		virtual uint rankLessThan(uint &symbol, uint pos) = 0;
 		virtual uint select(uint symbol, uint pos, uint l, wt_coder * c)=0;
 		virtual uint access(uint pos)=0;
+		virtual uint access(uint pos, uint &rank)
+                {
+                    assert(0); // Implemented only in wt_node_internal
+                    return -1;
+                }
 		virtual uint size()=0;
     virtual uint save(FILE *fp)=0;
     static wt_node * load(FILE *fp);
@@ -45,4 +55,3 @@ class wt_node {
 #include <wt_node_leaf.h>
 
 #endif
-