home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Cream of the Crop 26
/
Cream of the Crop 26.iso
/
os2
/
octa209b.zip
/
octave-2.09
/
DLFCN.ZIP
/
dlfcn
/
octave
/
ov-base.h
< prev
next >
Wrap
C/C++ Source or Header
|
1997-08-20
|
5KB
|
198 lines
/*
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 (octave_base_value_h)
#define octave_base_value_h 1
#if defined (__GNUG__)
#pragma interface
#endif
#include <cstdlib>
#include <string>
class ostream;
#include "mx-base.h"
#include "str-vec.h"
#include "error.h"
#include "ov.h"
#include "ov-typeinfo.h"
class Octave_map;
class octave_value_list;
class tree_walker;
// A base value type, so that derived types only have to redefine what
// they need (if they are derived from octave_base_value instead of
// octave_value).
class
octave_base_value : public octave_value
{
public:
octave_base_value (void)
: octave_value (octave_xvalue ()) { }
octave_base_value (const octave_base_value&)
: octave_value (octave_xvalue ()) { }
~octave_base_value (void) { }
octave_value *clone (void) { return new octave_base_value (*this); }
type_conv_fcn numeric_conversion_function (void) const
{ return (type_conv_fcn) 0; }
octave_value *try_narrowing_conversion (void)
{ return (octave_value *) 0; }
octave_value index (const octave_value_list& idx) const;
idx_vector index_vector (void) const;
octave_value struct_elt_val (const string& nm, bool silent) const;
octave_value& struct_elt_ref (const string& nm);
int rows (void) const { return -1; }
int columns (void) const { return -1; }
bool is_defined (void) const { return false; }
bool is_real_scalar (void) const { return false; }
bool is_real_matrix (void) const { return false; }
bool is_complex_scalar (void) const { return false; }
bool is_complex_matrix (void) const { return false; }
bool is_char_matrix (void) const { return false; }
bool is_string (void) const { return false; }
bool is_range (void) const { return false; }
bool is_map (void) const { return false; }
bool is_magic_colon (void) const { return false; }
bool is_all_va_args (void) const { return false; }
octave_value all (void) const { return 0.0; }
octave_value any (void) const { return 0.0; }
bool is_real_type (void) const { return false; }
bool is_complex_type (void) const { return false; }
// Would be nice to get rid of the next four functions:
bool is_scalar_type (void) const { return false; }
bool is_matrix_type (void) const { return false; }
bool is_numeric_type (void) const { return false; }
bool valid_as_scalar_index (void) const { return false; }
bool valid_as_zero_index (void) const { return false; }
bool is_true (void) const { return false; }
bool is_empty (void) const
{ return (rows () == 0 || columns () == 0); }
bool is_zero_by_zero (void) const
{ return (rows () == 0 && columns () == 0); }
double double_value (bool) const;
Matrix matrix_value (bool frc_str_conv = false) const;
Complex complex_value (bool frc_str_conv = false) const;
ComplexMatrix complex_matrix_value (bool frc_str_conv = false) const;
charMatrix char_matrix_value (bool frc_str_conv = false) const;
string_vector all_strings (void) const;
string string_value (void) const;
Range range_value (void) const;
Octave_map map_value (void) const;
octave_value not (void) const;
octave_value uminus (void) const;
octave_value transpose (void) const;
octave_value hermitian (void) const;
void increment (void);
void decrement (void);
octave_value convert_to_str (void) const;
void convert_to_row_or_column_vector (void);
void print (ostream& os, bool pr_as_read_syntax = false);
int type_id (void) const { return t_id; }
string type_name (void) const { return t_name; }
static int static_type_id (void) { return t_id; }
static void register_type (void)
{ t_id = octave_value_typeinfo::register_type (t_name); }
private:
// Type id of base value objects, set by register_type().
static int t_id;
// Type name of base value objects, defined in ov-base.cc.
static const string t_name;
};
#endif
extern void install_base_type_conversions (void);
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/