////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1999-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave 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.
//
// Octave 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 Octave; see the file COPYING.  If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////

#if ! defined (octave_ov_cell_h)
#define octave_ov_cell_h 1

#include "octave-config.h"

#include <cstdlib>

#include <iosfwd>
#include <string>
#include <memory>

#include "mx-base.h"
#include "str-vec.h"

#include "Cell.h"
#include "error.h"
#include "ov-base-mat.h"
#include "ov-typeinfo.h"

class octave_value_list;

// Cells.

class
octave_cell : public octave_base_matrix<Cell>
{
public:

  octave_cell (void)
    : octave_base_matrix<Cell> (), m_cellstr_cache () { }

  octave_cell (const Cell& c)
    : octave_base_matrix<Cell> (c), m_cellstr_cache () { }

  octave_cell (const Array<std::string>& str)
    : octave_base_matrix<Cell> (Cell (str)),
      m_cellstr_cache (new Array<std::string> (str)) { }

  octave_cell (const octave_cell& c)
    : octave_base_matrix<Cell> (c), m_cellstr_cache () { }

  ~octave_cell (void) = default;

  octave_base_value * clone (void) const { return new octave_cell (*this); }
  octave_base_value * empty_clone (void) const { return new octave_cell (); }

  void break_closure_cycles (const std::shared_ptr<octave::stack_frame>& frame);

#if 0
  octave_base_value * try_narrowing_conversion (void);
#endif

  octave_value subsref (const std::string& type,
                        const std::list<octave_value_list>& idx)
  {
    octave_value_list tmp = subsref (type, idx, 1);
    return tmp.length () > 0 ? tmp(0) : octave_value ();
  }

  octave_value_list subsref (const std::string& type,
                             const std::list<octave_value_list>& idx,
                             int nargout);

  octave_value subsref (const std::string& type,
                        const std::list<octave_value_list>& idx,
                        bool auto_add);

  octave_value subsasgn (const std::string& type,
                         const std::list<octave_value_list>& idx,
                         const octave_value& rhs);

  // FIXME: should we import the functions from the base class and
  // overload them here, or should we use a different name so we don't
  // have to do this?  Without the using declaration or a name change,
  // the base class functions will be hidden.  That may be OK, but it
  // can also cause some confusion.
  using octave_base_value::assign;

  void assign (const octave_value_list& idx, const Cell& rhs);

  void assign (const octave_value_list& idx, const octave_value& rhs);

  void delete_elements (const octave_value_list& idx);

  std::size_t byte_size (void) const;

  octave_value sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const;

  octave_value sort (Array<octave_idx_type>& sidx, octave_idx_type dim = 0,
                     sortmode mode = ASCENDING) const;

  sortmode issorted (sortmode mode = UNSORTED) const;

  Array<octave_idx_type> sort_rows_idx (sortmode mode = ASCENDING) const;

  sortmode is_sorted_rows (sortmode mode = UNSORTED) const;

  bool is_matrix_type (void) const { return false; }

  bool isnumeric (void) const { return false; }

  bool is_defined (void) const { return true; }

  bool is_constant (void) const { return true; }

  bool iscell (void) const { return true; }

  builtin_type_t builtin_type (void) const { return btyp_cell; }

  bool iscellstr (void) const;

  bool is_true (void) const;

  Cell cell_value (void) const { return matrix; }

  octave_value_list list_value (void) const;

  octave_value convert_to_str_internal (bool pad, bool, char type) const
  { return octave_value (string_vector_value (pad), type); }

  string_vector string_vector_value (bool pad = false) const;

  Array<std::string> cellstr_value (void) const;

  Array<std::string> cellstr_value (const char *fmt, ...) const;

  bool print_as_scalar (void) const;

  void print (std::ostream& os, bool pr_as_read_syntax = false);

  void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const;

  bool print_name_tag (std::ostream& os, const std::string& name) const;

  void short_disp (std::ostream& os) const;

  bool save_ascii (std::ostream& os);

  bool load_ascii (std::istream& is);

  bool save_binary (std::ostream& os, bool save_as_floats);

  bool load_binary (std::istream& is, bool swap,
                    octave::mach_info::float_format fmt);

  bool save_hdf5 (octave_hdf5_id loc_id, const char *name, bool save_as_floats);

  bool load_hdf5 (octave_hdf5_id loc_id, const char *name);

  octave_value map (unary_mapper_t umap) const;

  mxArray * as_mxArray (bool interleaved) const;

  // This function exists to support the MEX interface.
  // You should not use it anywhere else.
  const void * mex_get_data (void) const;

private:

  void clear_cellstr_cache (void) const
  { m_cellstr_cache.reset (); }

  //--------

  mutable std::unique_ptr<Array<std::string>> m_cellstr_cache;

  DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
};

#endif