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/*
 * Copyright (c) 2015, Ford Motor Company
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided with the
 * distribution.
 *
 * Neither the name of the Ford Motor Company nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef SRC_COMPONENTS_UTILS_INCLUDE_UTILS_STL_UTILS_H_
#define SRC_COMPONENTS_UTILS_INCLUDE_UTILS_STL_UTILS_H_

#include "utils/macro.h"

namespace utils {

/*
 * Utility class that automatically deletes STL collection of
 * freestore objects
 */
template<class T>
class StlCollectionDeleter {
 public:
  typedef T Collection;
  StlCollectionDeleter(T* collection)
      : collection_(collection) {
    DCHECK(collection_);
  }
  ~StlCollectionDeleter() {
    for (typename Collection::iterator i = collection_->begin(), end =
        collection_->end(); i != end; ++i) {
      delete *i;
      *i = NULL;
    }
  }
 private:
  Collection* collection_;
};

template<class T>
class StlMapDeleter {
 public:
  typedef T Collection;
  StlMapDeleter(T* collection)
      : collection_(collection) {
    DCHECK(collection_);
  }
  ~StlMapDeleter() {
    for (typename Collection::iterator i = collection_->begin(), end =
        collection_->end(); i != end; ++i) {
      delete i->second;
      i->second = NULL;
    }

  }
 private:
  Collection* collection_;
};

}  // namespace utils

#endif // SRC_COMPONENTS_UTILS_INCLUDE_UTILS_STL_UTILS_H_