Import libcds.

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

diff --git a/src/static_sequence/static_sequence_gmr_chunk.h b/src/static_sequence/static_sequence_gmr_chunk.h
new file mode 100644 (file)
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+/* static_sequence_gmr_chunk.h
+ * Copyright (C) 2008, Francisco Claude, all rights reserved.
+ *
+ * gmr_chunk
+ *
+ * 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 _STATIC_SEQUENCE_GMR_CHUNK_H
+#define _STATIC_SEQUENCE_GMR_CHUNK_H
+
+#include <basics.h>
+#include <static_sequence.h>
+#include <static_bitsequence.h>
+#include <static_bitsequence_builder.h>
+#include <static_permutation.h>
+#include <static_permutation_builder.h>
+#include <cassert>
+#include <iostream>
+
+//using namespace std;
+
+/** Implementation of the Chunk of Golynski et al's rank/select
+ * data structure [1].
+ *
+ * [1] A. Golynski and I. Munro and S. Rao. 
+ * Rank/select operations on large alphabets: a tool for text indexing.
+ * SODA 06.
+ *
+ * @author Francisco Claude
+ */
+class static_sequence_gmr_chunk: public static_sequence {
+  public:
+    /** Builds the structures needed for the chunk */
+    static_sequence_gmr_chunk(uint * sequence, uint chunk_length, static_bitsequence_builder *bmb, static_permutation_builder *pmb);
+
+    /** Destroy the chunk */
+    ~static_sequence_gmr_chunk();
+
+    virtual uint access(uint j);
+    virtual uint select(uint i, uint j);
+    virtual uint rank(uint i, uint j);
+    virtual uint size();
+    virtual uint save(FILE *fp);
+    static static_sequence_gmr_chunk * load(FILE *fp);
+
+  protected:
+    /** Bitmap */
+    static_bitsequence * X;
+    /** Permutation */
+    static_permutation * permutation;
+    /** Size of the alphabet */
+    uint sigma;
+    /** Length of the chunk */
+    //uint chunk_length;
+    static_sequence_gmr_chunk();
+};
+#endif