Vector.h

#ifndef _theplu_yat_utility_vector_
#define _theplu_yat_utility_vector_

// $Id: Vector.h 3855 2020-01-02 01:11:34Z peter $

/*
  Copyright (C) 2003 Daniel Dalevi, Peter Johansson
  Copyright (C) 2004 Jari Häkkinen, Peter Johansson
  Copyright (C) 2005 Jari Häkkinen, Peter Johansson, Markus Ringnér
  Copyright (C) 2006 Jari Häkkinen, Markus Ringnér
  Copyright (C) 2007 Jari Häkkinen, Peter Johansson, Markus Ringnér
  Copyright (C) 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2009, 2012, 2017, 2019 Peter Johansson

  This file is part of the yat library, http://dev.thep.lu.se/yat

  The yat library 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.

  The yat library 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 yat. If not, see <http://www.gnu.org/licenses/>.
*/

#include "config_public.h"

#include "VectorMutable.h"
#include "Exception.h"

#include <cstddef> // size_t
#include <iosfwd>
#include <stdexcept>

#include <gsl/gsl_vector.h>

namespace theplu {
namespace yat {
namespace utility {

  class Vector : public VectorMutable
  {
  public:
    Vector(void);

    explicit Vector(size_t n, double init_value=0);

    Vector(const Vector& other);

    template<class T>
    Vector(const VectorExpression<T>& other)
      : VectorMutable(detail::create_gsl_vector_copy(other.gsl_vector_p()))
    {
    }

#ifdef YAT_HAVE_RVALUE

    Vector(Vector&& other) noexcept;

    template<class T>
    Vector(VectorExpression<T>&& other)
      : VectorMutable(other.gsl_vector_p())
    {
      other.gsl_vector_p(NULL);
    }
#endif

    explicit Vector(const VectorBase& other);

    explicit Vector(std::istream &, char sep='\0');

    ~Vector(void);

    bool isview(void) const;

    void resize(size_t, double init_value=0);

    const Vector& operator=(const Vector&);

    template<class T>
    Vector& operator=(const VectorExpression<T>& rhs)
    {
      // access rhs before deleting vec_
      gsl_vector* tmp = detail::create_gsl_vector_copy(rhs.gsl_vector_p());
      delete_allocated_memory();
      const_vec_ = vec_ = tmp;
      return *this;
    }

#ifdef YAT_HAVE_RVALUE

    Vector& operator=(Vector&&);

    template<class T>
    Vector& operator=(VectorExpression<T>&& rhs)
    {
      gsl_vector* tmp = rhs.gsl_vector_p();
      delete_allocated_memory();
      const_vec_ = vec_ = tmp;
      rhs.gsl_vector_p(NULL);
      return *this;
    }

#endif

    const Vector& operator=(const VectorBase&);

  private:
    const Vector& assign(const VectorBase& other);
    const Vector& assign(const gsl_vector* rhs);

    gsl_vector* create_gsl_vector_copy(const VectorBase&) const;


    void delete_allocated_memory(void);
  };

  void swap(Vector&, Vector&);

}}} // of namespace utility, yat, and theplu

#endif