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ov-struct.cc
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1996-11-07
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/*
Copyright (C) 1996 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 2, 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, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if defined (__GNUG__)
#pragma implementation
#endif
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <iostream.h>
#include "error.h"
#include "ov-struct.h"
#include "unwind-prot.h"
octave_allocator
octave_struct::allocator (sizeof (octave_struct));
int
octave_struct::t_id (-1);
const string
octave_struct::t_name ("struct");
octave_value
octave_struct::struct_elt_val (const string& nm, bool silent) const
{
octave_value retval;
Pix idx = map.seek (nm);
if (idx)
retval = map.contents (idx);
else if (! silent)
error ("structure has no member `%s'", nm.c_str ());
return retval;
}
octave_value&
octave_struct::struct_elt_ref (const string& nm)
{
return map [nm];
}
void
octave_struct::print (ostream& os, bool)
{
// XXX FIXME XXX -- would be nice to print the output in some
// standard order. Maybe all substructures first, maybe
// alphabetize entries, etc.
begin_unwind_frame ("octave_struct_print");
unwind_protect_int (struct_indent);
unwind_protect_int (Vstruct_levels_to_print);
if (Vstruct_levels_to_print-- > 0)
{
os.form ("\n%*s{\n", struct_indent, "");
increment_struct_indent ();
Pix p = map.first ();
while (p)
{
bool pad_after = false;
string key = map.key (p);
octave_value val = map.contents (p);
map.next (p);
os.form ("%*s%s =", struct_indent, "", key.c_str ());
if (val.print_as_scalar ())
os << " ";
else if (val.is_map ())
{
if (p)
pad_after = true;
}
else
{
if (p)
pad_after = true;
os << "\n\n";
}
val.print (os);
if (pad_after)
os << "\n";
}
decrement_struct_indent ();
os.form ("%*s%s", struct_indent, "", "}\n");
}
else
os << " <structure>\n";
run_unwind_frame ("octave_struct_print");
}
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/