HashSet.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2011 Evgeniy Andreev (gsomix)
 *
 * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society
 */

#ifndef HASHSET_H_
#define HASHSET_H_

#include <shogun/base/SGObject.h>
#include <shogun/lib/common.h>
#include <shogun/lib/Hash.h>

namespace shogun
{

#ifndef DOXYGEN_SHOULD_SKIP_THIS

struct HashSetNode
{
    int32_t key;

    float64_t data;

    HashSetNode *left;

    HashSetNode *right;
};
#endif

class CHashSet: public CSGObject
{
public:
    CHashSet();

    CHashSet(int32_t size);

    virtual inline const char* get_name() const
    {
        return "HashSet";
    }

    virtual ~CHashSet();

    bool insert_key(int32_t key, float64_t data);

    bool search_key(int32_t key, float64_t &ret_data);

    void delete_key(int32_t key);

    void debug();
private:
    int32_t hash(int32_t key);

    HashSetNode* chain_search(int32_t index, int32_t key);

protected:
    HashSetNode **hash_array;

    int32_t array_size;
};

}

#endif /* HASHSET_H_ */