X-Git-Url: http://git.nguyen.vg/gitweb/?a=blobdiff_plain;f=libcds%2Fsrc%2Fstatic_sequence%2Fwt_coder.h;h=5f6d436de8ad6b4e43ef264364377c55b64abd29;hb=82bd00eaaece0e0bec72dce91ab670c89e6dccd9;hp=1a55397d11b1676e379923628eb8e3d055945053;hpb=450ba3c9c74665094fb8f6821d6cc92d2bf23011;p=SXSI%2FXMLTree.git

diff --git a/libcds/src/static_sequence/wt_coder.h b/libcds/src/static_sequence/wt_coder.h
index 1a55397..5f6d436 100644
--- a/libcds/src/static_sequence/wt_coder.h
+++ b/libcds/src/static_sequence/wt_coder.h
@@ -36,6 +36,9 @@ using namespace std;
  */
 class wt_coder {
 	public:
+		wt_coder();
+		virtual void use();
+		virtual void unuse();
     virtual ~wt_coder() {}; 
     /** Tells if at level l the symbol is represented by a one or a zero */
 		virtual bool is_set(uint symbol, uint l)=0;
@@ -43,10 +46,16 @@ class wt_coder {
 		virtual bool done(uint symbol, uint l)=0;
     /** Returns the size of the coder */
     virtual uint size()=0;
+    /** Returns the depth of the tree */
+    virtual uint depth() {
+        return -1; // Implemented in wt_coder_binary
+    }
     /** Saves the coder to a file, returns 0 in case of success */
     virtual uint save(FILE *fp)=0;
     /** Loads a coder from a file, returns NULL in case of error */
     static wt_coder * load(FILE *fp);
+	protected:
+		uint user_count;
 };
 
 #include <wt_coder_huff.h>