Mercurial > hg > octave-lyh

annotate libinterp/interp-core/oct-lvalue.cc @ 16660:cbb1bb7a5c3d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added tag ss-3-7-5 for changeset 608e307b4914
author John W. Eaton <jwe@octave.org>
date Tue, 14 May 2013 05:23:53 -0400
parents 302157614308
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
1 /*
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
2
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
3 Copyright (C) 1996-2012 John W. Eaton
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
4
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
5 This file is part of Octave.
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
6
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
10 option) any later version.
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
11
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
12 Octave is distributed in the hope that it will be useful, but WITHOUT
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
15 for more details.
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
16
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 5307
diff changeset
19 <http://www.gnu.org/licenses/>.
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
20
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
21 */
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
22
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
23 #ifdef HAVE_CONFIG_H
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
24 #include <config.h>
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
25 #endif
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
26
3203
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
27 #include "error.h"
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
28 #include "oct-obj.h"
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
29 #include "oct-lvalue.h"
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
30 #include "ov.h"
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
31
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
32 void
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
33 octave_lvalue::assign (octave_value::assign_op op, const octave_value& rhs)
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
34 {
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
35 if (! is_black_hole ())
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
36 {
10544
9961fc022d9d fix assignment to non-existing variables and octave_value::assign
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
37 if (idx.empty ())
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
38 sym->assign (op, rhs);
10544
9961fc022d9d fix assignment to non-existing variables and octave_value::assign
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
39 else
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
40 sym->assign (op, type, idx, rhs);
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
41 }
3203
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
42 }
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
43
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
44 void
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3929
diff changeset
45 octave_lvalue::set_index (const std::string& t,
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10227
diff changeset
46 const std::list<octave_value_list>& i)
3357
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
47 {
10206
37a08e0ce2dc support Matlab-style empty output/input arguments
Jaroslav Hajek <highegg@gmail.com>
parents: 10160
diff changeset
48 if (idx.empty ())
3357
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
49 {
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3929
diff changeset
50 type = t;
3357
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
51 idx = i;
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
52 }
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
53 else
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
54 error ("invalid index expression in assignment");
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
55 }
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
56
34d512262892 [project @ 1999-11-18 07:18:30 by jwe]
jwe
parents: 3205
diff changeset
57 void
3203
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
58 octave_lvalue::do_unary_op (octave_value::unary_op op)
bc61b0e8d60e [project @ 1998-10-30 20:26:27 by jwe]
jwe
parents: 2984
diff changeset
59 {
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
60 if (! is_black_hole ())
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
61 {
10614
d1194069e58c optimize code handling ++,--
Jaroslav Hajek <highegg@gmail.com>
parents: 10544
diff changeset
62 if (idx.empty ())
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
63 sym->do_non_const_unary_op (op);
10614
d1194069e58c optimize code handling ++,--
Jaroslav Hajek <highegg@gmail.com>
parents: 10544
diff changeset
64 else
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
65 sym->do_non_const_unary_op (op, type, idx);
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
66 }
2979
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
67 }
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
jwe
parents:
diff changeset
68
5001
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
69 octave_value
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
70 octave_lvalue::value (void) const
5001
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
71 {
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
72 octave_value retval;
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
73
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
74 if (! is_black_hole ())
5001
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
75 {
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
76 octave_value val = sym->varval ();
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
77
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
78 if (idx.empty ())
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
79 retval = val;
5001
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
80 else
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
81 {
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
82 if (val.is_constant ())
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
83 retval = val.subsref (type, idx);
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
84 else
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
85 {
16442
302157614308 deprecate symbol_table::varref functions
John W. Eaton <jwe@octave.org>
parents: 15195
diff changeset
86 octave_value_list t = val.subsref (type, idx, 1);
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
87 if (t.length () > 0)
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
88 retval = t(0);
10227
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
89 }
d3fc22c3071c omit ~ values from multi-assignment return lists
Jaroslav Hajek <highegg@gmail.com>
parents: 10206
diff changeset
90 }
5001
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
91 }
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
92
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
93 return retval;
6690d8cd9bee [project @ 2004-09-16 00:31:42 by jwe]
jwe
parents: 4219
diff changeset
94 }