WrapArray2D.h

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2015-2018 - Belle II Collaboration                        *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Guglielmo De Nardo                                       *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
 
#pragma once
 
 
namespace Belle2 {
  namespace ECL {
    template <typename T>
    class WrapArray2D {
    public:
      WrapArray2D(int rows,  int cols) :
        m_data(new T[rows * cols]), m_ncols(cols)
      {}
 
      WrapArray2D(const WrapArray2D&) = delete;
 
      WrapArray2D& operator=(const WrapArray2D&) = delete;
 
      ~WrapArray2D()
      {  delete [] m_data;  }
 
      T* operator[](int irow)
      {
        return m_data + irow * m_ncols;
      }
 
      operator T* () { return m_data; }
    private:
 
      T* m_data; 
      int m_ncols; 
    };
  }
}