#ifndef MARISA_SCOPED_ARRAY_H_

#define MARISA_SCOPED_ARRAY_H_

#include "base.h"

namespace marisa {

template <typename T>

class scoped_array {

 public:

  scoped_array() : array_(NULL) {}

  explicit scoped_array(T *array) : array_(array) {}

  ~scoped_array() {

    delete [] array_;

  }

  void reset(T *array = NULL) {

    MARISA_THROW_IF((array != NULL) && (array == array_), MARISA_RESET_ERROR);

    scoped_array(array).swap(*this);

  }

  T &operator[](std::size_t i) const {

    MARISA_DEBUG_IF(array_ == NULL, MARISA_STATE_ERROR);

    return array_[i];

  }

  T *get() const {

    return array_;

  }

  void clear() {

    scoped_array().swap(*this);

  }

  void swap(scoped_array &rhs) {

    marisa::swap(array_, rhs.array_);

  }

 private:

  T *array_;

  // Disallows copy and assignment.

  scoped_array(const scoped_array &);

  scoped_array &operator=(const scoped_array &);

};

}  // namespace marisa

#endif  // MARISA_SCOPED_ARRAY_H_