/*

 * Copyright (C) 2012 David Anderson

 *

 * This file is part of JITCraft.

 *

 * JITCraft 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.

 * 

 * Foobar 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * JITCraft. If not, see http://www.gnu.org/licenses/.

 */

#ifndef _include_jitcraft_string_pool_h_

#define _include_jitcraft_string_pool_h_

#include <vector>

#include <string.h>

#include "PoolAllocator.h"

namespace jc {

typedef const char Name;

// Guarantee that strings with the same contents will map to one pointer. The

// strings are pool allocated, and search is linear for simplicity.

class StringPool

{

    PoolAllocator &pool_;

    std::vector<Name *> strings_;

  public:

    StringPool(PoolAllocator &pool)

      : pool_(pool)

    {

    }

    Name *add(const char *string) {

        for (size_t i = 0; i < strings_.size(); i++) {

            if (strcmp(strings_[i], string) == 0)

                return strings_[i];

        }

        char *name = (char *)pool_.allocate(strlen(string) + 1);

        strcpy(name, string);

        strings_.push_back(name);

        return name;

    }

};

}

#endif // _include_jitcraft_string_pool_h_