/*

Copyright (C) 1996-2019 John W. Eaton

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 (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include "defun.h"
#include "ovl.h"
#include "pt-arg-list.h"
#include "pt-exp.h"
#include "pt-mat.h"
#include "ov.h"
#include "variables.h"

#include "ov-cx-mat.h"
#include "ov-flt-cx-mat.h"
#include "ov-re-sparse.h"
#include "ov-cx-sparse.h"

namespace octave
{
  std::string
  get_concat_class (const std::string& c1, const std::string& c2)
  {
    std::string retval = octave_base_value::static_class_name ();

    if (c1 == c2)
      retval = c1;
    else if (c1.empty ())
      retval = c2;
    else if (c2.empty ())
      retval = c1;
    else if (c1 == "class" || c2 == "class")
      retval = "class";
    else
      {
        bool c1_is_int = (c1 == "int8" || c1 == "uint8"
                          || c1 == "int16" || c1 == "uint16"
                          || c1 == "int32" || c1 == "uint32"
                          || c1 == "int64" || c1 == "uint64");
        bool c2_is_int = (c2 == "int8" || c2 == "uint8"
                          || c2 == "int16" || c2 == "uint16"
                          || c2 == "int32" || c2 == "uint32"
                          || c2 == "int64" || c2 == "uint64");

        bool c1_is_char = (c1 == "char");
        bool c2_is_char = (c2 == "char");

        bool c1_is_double = (c1 == "double");
        bool c2_is_double = (c2 == "double");

        bool c1_is_single = (c1 == "single");
        bool c2_is_single = (c2 == "single");

        bool c1_is_logical = (c1 == "logical");
        bool c2_is_logical = (c2 == "logical");

        bool c1_is_built_in_type
          = (c1_is_int || c1_is_char || c1_is_double || c1_is_single
             || c1_is_logical);

        bool c2_is_built_in_type
          = (c2_is_int || c2_is_char ||  c2_is_double || c2_is_single
             || c2_is_logical);

        // Order is important here...

        if (c1 == "cell" || c2 == "cell")
          retval = "cell";
        else if (c1_is_char && c2_is_built_in_type)
          retval = c1;
        else if (c2_is_char && c1_is_built_in_type)
          retval = c2;
        else if (c1_is_int && c2_is_built_in_type)
          retval = c1;
        else if (c2_is_int && c1_is_built_in_type)
          retval = c2;
        else if (c1_is_single && c2_is_built_in_type)
          retval = c1;
        else if (c2_is_single && c1_is_built_in_type)
          retval = c2;
        else if (c1_is_double && c2_is_built_in_type)
          retval = c1;
        else if (c2_is_double && c1_is_built_in_type)
          retval = c2;
        else if (c1_is_logical && c2_is_logical)
          retval = c1;
      }

    return retval;
  }

  void
  maybe_warn_string_concat (bool all_dq_strings_p, bool all_sq_strings_p)
  {
    if (! (all_dq_strings_p || all_sq_strings_p))
      warning_with_id ("Octave:mixed-string-concat",
                       "concatenation of different character string types may have unintended consequences");
  }

  tree_expression *
  tree_matrix::dup (symbol_scope& scope) const
  {
    tree_matrix *new_matrix = new tree_matrix (nullptr, line (), column ());

    new_matrix->copy_base (*this, scope);

    return new_matrix;
  }
}
