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/usr/include/octave-3.8.2/octave/pt-misc.h is in liboctave-dev 3.8.2-4.

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/*

Copyright (C) 1994-2013 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
<http://www.gnu.org/licenses/>.

*/

#if !defined (octave_pt_misc_h)
#define octave_pt_misc_h 1

class Cell;

class octave_value;
class octave_value_list;

class tree_identifier;
class tree_index_expression;
class tree_va_return_list;

class tree_walker;

#include "base-list.h"
#include "pt-decl.h"
#include "symtab.h"

// Parameter lists.  Used to hold the list of input and output
// parameters in a function definition.  Elements are identifiers
// only.

class
tree_parameter_list : public octave_base_list<tree_decl_elt *>
{
public:

  enum in_or_out
  {
    in = 1,
    out = 2
  };

  tree_parameter_list (void)
    : marked_for_varargs (0) { }

  tree_parameter_list (tree_decl_elt *t)
    : marked_for_varargs (0) { append (t); }

  tree_parameter_list (tree_identifier *id)
    : marked_for_varargs (0) { append (new tree_decl_elt (id)); }

  ~tree_parameter_list (void);

  void mark_as_formal_parameters (void);

  bool validate (in_or_out type);

  bool takes_varargs (void) const { return marked_for_varargs != 0; }

  bool varargs_only (void) { return (marked_for_varargs < 0); }

  void initialize_undefined_elements (const std::string& warnfor,
                                      int nargout, const octave_value& val);

  void define_from_arg_vector (const octave_value_list& args);

  void undefine (void);

  bool is_defined (void);

  std::list<std::string> variable_names (void) const;

  octave_value_list convert_to_const_vector (int nargout,
                                             const Cell& varargout);

  tree_parameter_list *dup (symbol_table::scope_id scope,
                            symbol_table::context_id context) const;

  void accept (tree_walker& tw);

private:

  int marked_for_varargs;

  void mark_varargs (void) { marked_for_varargs = 1; }

  void mark_varargs_only (void) { marked_for_varargs = -1; }

  // No copying!

  tree_parameter_list (const tree_parameter_list&);

  tree_parameter_list& operator = (const tree_parameter_list&);
};

// Return lists.  Used to hold the right hand sides of multiple
// assignment expressions.

class
tree_return_list : public octave_base_list<tree_index_expression *>
{
public:

  tree_return_list (void) { }

  tree_return_list (tree_index_expression *t) { append (t); }

  ~tree_return_list (void);

  tree_return_list *dup (symbol_table::scope_id scope,
                         symbol_table::context_id context) const;

  void accept (tree_walker& tw);

private:

  // No copying!

  tree_return_list (const tree_return_list&);

  tree_return_list& operator = (const tree_return_list&);
};

class
tree_va_return_list : public octave_base_list<octave_value>
{
public:

  tree_va_return_list (void) { }

  ~tree_va_return_list (void) { }

private:

  // No copying!

  tree_va_return_list (const tree_va_return_list&);

  tree_va_return_list& operator = (const tree_va_return_list&);
};

#endif