/*

  * 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_