Import libcds.

[SXSI/libcds.git] / src / static_sequence / wt_node.h

diff --git a/src/static_sequence/wt_node.h b/src/static_sequence/wt_node.h
new file mode 100644 (file)
index 0000000..15ce49d
--- /dev/null
+++ b/src/static_sequence/wt_node.h
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+/* wt_node.h
+ * Copyright (C) 2008, Francisco Claude, all rights reserved.
+ *
+ * wt_node
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+ 
+#ifndef wt_node_h
+#define wt_node_h
+
+#include <basics.h>
+#include <wt_coder.h>
+#include <vector>
+
+#define WT_NODE_NULL_HDR 0
+#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) = 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 void access(std::vector<int> &result, uint i, uint j, uint min, uint max, uint l, uint pivot)=0;
+                virtual void access(std::vector<int> &result, uint i, uint j)=0;
+                virtual uint access(uint i, uint j, uint min, uint max, uint l, uint pivot)=0;
+               virtual uint size()=0;
+    virtual uint save(FILE *fp)=0;
+    static wt_node * load(FILE *fp);
+};
+
+#include <wt_node_internal.h>
+#include <wt_node_leaf.h>
+
+#endif