octave-nkf: src/ov-usr-fcn.cc annotate

annotate src/ov-usr-fcn.cc @ 10315:57a59eae83cc

untabify src C++ source files

author	John W. Eaton <jwe@octave.org>
date	Thu, 11 Feb 2010 12:41:46 -0500
parents	cd96d29c5efa
children	cb0883127251

rev	line source
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	1 /*
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	2
7017 a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe] jwe parents: 7016 diff changeset	3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005,
8920 eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8785 diff changeset	4 2006, 2007, 2008, 2009 John W. Eaton
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	5
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	6 This file is part of Octave.
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	7
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	8 Octave is free software; you can redistribute it and/or modify it
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	9 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: 6657 diff changeset	10 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6657 diff changeset	11 option) any later version.
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	12
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	13 Octave is distributed in the hope that it will be useful, but WITHOUT
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	16 for more details.
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	17
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	18 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: 6657 diff changeset	19 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6657 diff changeset	20 <http://www.gnu.org/licenses/>.
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	21
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	22 */
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	23
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	24 #ifdef HAVE_CONFIG_H
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	25 #include <config.h>
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	26 #endif
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	27
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	28 #include "str-vec.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	29
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	30 #include <defaults.h>
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3933 diff changeset	31 #include "Cell.h"
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	32 #include "defun.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	33 #include "error.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	34 #include "input.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	35 #include "oct-obj.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	36 #include "ov-usr-fcn.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	37 #include "ov.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	38 #include "pager.h"
8658 73c4516fae10 New evaluator and debugger derived from tree-walker class John W. Eaton <jwe@octave.org> parents: 8580 diff changeset	39 #include "pt-eval.h"
2985 aa9d0c0e0458 [project @ 1997-05-16 06:54:18 by jwe] jwe parents: 2982 diff changeset	40 #include "pt-jump.h"
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	41 #include "pt-misc.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	42 #include "pt-pr-code.h"
2982 20f5cec4f11c [project @ 1997-05-16 03:29:26 by jwe] jwe parents: 2974 diff changeset	43 #include "pt-stmt.h"
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	44 #include "pt-walk.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	45 #include "symtab.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	46 #include "toplev.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	47 #include "unwind-prot.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	48 #include "utils.h"
3489 cbee5fbb696d [project @ 2000-01-28 09:14:32 by jwe] jwe parents: 3445 diff changeset	49 #include "parse.h"
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	50 #include "variables.h"
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	51
3131 9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	52 // Maximum nesting level for functions called recursively.
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	53 static int Vmax_recursion_depth = 256;
3131 9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	54
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	55 // Whether to optimize subsasgn method calls.
9529 8e5009334661 partially revert e79470be3ecb Jaroslav Hajek <highegg@gmail.com> parents: 9522 diff changeset	56 static bool Voptimize_subsasgn_calls = true;
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	57
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	58 // User defined scripts.
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	59
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	60 DEFINE_OCTAVE_ALLOCATOR (octave_user_script);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	61
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	62 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_user_script,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	63 "user-defined script",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	64 "user-defined script");
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	65
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	66 octave_user_script::octave_user_script (void)
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	67 : octave_user_code (), cmd_list (0), file_name (),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	68 t_parsed (static_cast<time_t> (0)),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	69 t_checked (static_cast<time_t> (0)),
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	70 call_depth (-1)
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	71 { }
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	72
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	73 octave_user_script::octave_user_script (const std::string& fnm,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	74 const std::string& nm,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	75 tree_statement_list *cmds,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	76 const std::string& ds)
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	77 : octave_user_code (nm, ds), cmd_list (cmds), file_name (fnm),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	78 t_parsed (static_cast<time_t> (0)),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	79 t_checked (static_cast<time_t> (0)),
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	80 call_depth (-1)
7736 a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	81 {
a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	82 if (cmd_list)
a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	83 cmd_list->mark_as_script_body ();
a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	84 }
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	85
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	86 octave_user_script::octave_user_script (const std::string& fnm,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	87 const std::string& nm,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	88 const std::string& ds)
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	89 : octave_user_code (nm, ds), cmd_list (0), file_name (fnm),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	90 t_parsed (static_cast<time_t> (0)),
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	91 t_checked (static_cast<time_t> (0)),
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	92 call_depth (-1)
7731 2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	93 { }
2d2a969c731c fix max_recursion_limit exceeded at startup with Intel C++ Jaroslav Hajek <highegg@gmail.com> parents: 7719 diff changeset	94
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	95 octave_user_script::~octave_user_script (void)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	96 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	97 delete cmd_list;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	98 }
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	99
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	100 octave_value_list
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	101 octave_user_script::subsref (const std::string&,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	102 const std::list<octave_value_list>&, int)
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	103 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	104 octave_value_list retval;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	105
10001 6918d86add73 Print script filename in script indexing errors David Grundberg <davidg@cs.umu.se> parents: 9646 diff changeset	106 ::error ("invalid use of script %s in index expression", file_name.c_str ());
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	107
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	108 return retval;
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	109 }
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	110
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	111 octave_value_list
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	112 octave_user_script::do_multi_index_op (int nargout,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	113 const octave_value_list& args)
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	114 {
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	115 octave_value_list retval;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	116
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	117 unwind_protect frame;
8011 3100283874d7 improve backtrace error messages John W. Eaton <jwe@octave.org> parents: 7968 diff changeset	118
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	119 if (! error_state)
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	120 {
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	121 if (args.length () == 0 && nargout == 0)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	122 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	123 if (cmd_list)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	124 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	125 frame.protect_var (call_depth);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	126 call_depth++;
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	127
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	128 if (call_depth < Vmax_recursion_depth)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	129 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	130 octave_call_stack::push (this);
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	131
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	132 frame.add_fcn (octave_call_stack::pop);
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	133
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	134 frame.protect_var (tree_evaluator::in_fcn_or_script_body);
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	135 tree_evaluator::in_fcn_or_script_body = true;
8669 33783e94fb16 line number fixes and other evaluator tweaks John W. Eaton <jwe@octave.org> parents: 8658 diff changeset	136
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	137 cmd_list->accept (*current_evaluator);
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	138
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	139 if (tree_return_command::returning)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	140 tree_return_command::returning = 0;
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	141
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	142 if (tree_break_command::breaking)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	143 tree_break_command::breaking--;
8013 b3e667f1ab4c call backtrace_error_message in eval functions, not when popping stack John W. Eaton <jwe@octave.org> parents: 8011 diff changeset	144
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	145 if (error_state)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	146 octave_call_stack::backtrace_error_message ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	147 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	148 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	149 ::error ("max_recursion_limit exceeded");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	150 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	151 }
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	152 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	153 error ("invalid call to script %s", file_name.c_str ());
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	154 }
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	155
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	156 return retval;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	157 }
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	158
7715 5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	159 void
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	160 octave_user_script::accept (tree_walker& tw)
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	161 {
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	162 tw.visit_octave_user_script (*this);
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	163 }
5b4d278ec828 parse scripts completely before executing John W. Eaton <jwe@octave.org> parents: 7589 diff changeset	164
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	165 // User defined functions.
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	166
3219 30770ba4457a [project @ 1998-11-13 03:44:31 by jwe] jwe parents: 3178 diff changeset	167 DEFINE_OCTAVE_ALLOCATOR (octave_user_function);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	168
3219 30770ba4457a [project @ 1998-11-13 03:44:31 by jwe] jwe parents: 3178 diff changeset	169 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_user_function,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	170 "user-defined function",
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	171 "user-defined function");
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	172
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	173 // Ugh. This really needs to be simplified (code/data?
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	174 // extrinsic/intrinsic state?).
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	175
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	176 octave_user_function::octave_user_function
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	177 (symbol_table::scope_id sid, tree_parameter_list *pl,
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	178 tree_parameter_list rl, tree_statement_list cl)
7719 87eda1f8faaa octave_user_code: new base class for octave_user_script and octave_user_function John W. Eaton <jwe@octave.org> parents: 7715 diff changeset	179 : octave_user_code (std::string (), std::string ()),
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	180 param_list (pl), ret_list (rl), cmd_list (cl),
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	181 lead_comm (), trail_comm (), file_name (),
6323 ea65de49e18e [project @ 2007-02-17 02:51:02 by jwe] jwe parents: 6149 diff changeset	182 parent_name (), t_parsed (static_cast<time_t> (0)),
3255 4d33b1e56bff [project @ 1999-07-15 20:54:14 by jwe] jwe parents: 3239 diff changeset	183 t_checked (static_cast<time_t> (0)),
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	184 system_fcn_file (false), call_depth (-1),
7589 90fb25a5a3fa minor cleanup in octave_user_function constructor John W. Eaton <jwe@octave.org> parents: 7552 diff changeset	185 num_named_args (param_list ? param_list->length () : 0),
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	186 nested_function (false), inline_function (false),
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	187 class_constructor (false), class_method (false),
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	188 parent_scope (-1), local_scope (sid)
7736 a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	189 {
a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	190 if (cmd_list)
a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	191 cmd_list->mark_as_function_body ();
9639 8d79f36ebdde store scope->function pointer Jaroslav Hajek <highegg@gmail.com> parents: 9529 diff changeset	192
8d79f36ebdde store scope->function pointer Jaroslav Hajek <highegg@gmail.com> parents: 9529 diff changeset	193 if (local_scope >= 0)
8d79f36ebdde store scope->function pointer Jaroslav Hajek <highegg@gmail.com> parents: 9529 diff changeset	194 symbol_table::set_curr_fcn (this, local_scope);
7736 a059b5679fbb implement dbstack John W. Eaton <jwe@octave.org> parents: 7731 diff changeset	195 }
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	196
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	197 octave_user_function::~octave_user_function (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	198 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	199 delete param_list;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	200 delete ret_list;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	201 delete cmd_list;
3665 0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3565 diff changeset	202 delete lead_comm;
0689afb1d001 [project @ 2000-05-11 19:07:56 by jwe] jwe parents: 3565 diff changeset	203 delete trail_comm;
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	204
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	205 symbol_table::erase_scope (local_scope);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	206 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	207
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	208 octave_user_function *
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	209 octave_user_function::define_ret_list (tree_parameter_list *t)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	210 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	211 ret_list = t;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	212
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	213 return this;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	214 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	215
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	216 void
4343 db5e0814277a [project @ 2003-02-20 16:44:16 by jwe] jwe parents: 4280 diff changeset	217 octave_user_function::stash_fcn_file_name (const std::string& nm)
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	218 {
4343 db5e0814277a [project @ 2003-02-20 16:44:16 by jwe] jwe parents: 4280 diff changeset	219 file_name = nm;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	220 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	221
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	222 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	223 octave_user_function::mark_as_system_fcn_file (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	224 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	225 if (! file_name.empty ())
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	226 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	227 // We really should stash the whole path to the file we found,
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	228 // when we looked it up, to avoid possible race conditions...
5775 ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe] jwe parents: 5744 diff changeset	229 // FIXME
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	230 //
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	231 // We probably also don't need to get the library directory
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	232 // every time, but since this function is only called when the
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	233 // function file is parsed, it probably doesn't matter that
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	234 // much.
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	235
3523 b80bbb43a1a9 [project @ 2000-02-02 10:25:52 by jwe] jwe parents: 3489 diff changeset	236 std::string ff_name = fcn_file_in_path (file_name);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	237
3565 4290f11c8d3b [project @ 2000-02-03 08:32:41 by jwe] jwe parents: 3544 diff changeset	238 if (Vfcn_file_dir == ff_name.substr (0, Vfcn_file_dir.length ()))
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	239 system_fcn_file = 1;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	240 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	241 else
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	242 system_fcn_file = 0;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	243 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	244
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	245 bool
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	246 octave_user_function::takes_varargs (void) const
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	247 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	248 return (param_list && param_list->takes_varargs ());
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	249 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	250
5848 415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	251 bool
415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	252 octave_user_function::takes_var_return (void) const
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	253 {
5848 415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	254 return (ret_list && ret_list->takes_varargs ());
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	255 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	256
7761 5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	257 void
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	258 octave_user_function::lock_subfunctions (void)
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	259 {
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	260 symbol_table::lock_subfunctions (local_scope);
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	261 }
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	262
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	263 void
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	264 octave_user_function::unlock_subfunctions (void)
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	265 {
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	266 symbol_table::unlock_subfunctions (local_scope);
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	267 }
5adeea5de26c symbol table reporting functions John W. Eaton <jwe@octave.org> parents: 7752 diff changeset	268
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	269 octave_value_list
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	270 octave_user_function::all_va_args (const octave_value_list& args)
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	271 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	272 octave_value_list retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	273
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	274 octave_idx_type n = args.length () - num_named_args;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	275
3178 09a3064a3a17 [project @ 1998-06-23 03:46:42 by jwe] jwe parents: 3165 diff changeset	276 if (n > 0)
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	277 retval = args.slice (num_named_args, n);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	278
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	279 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	280 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	281
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	282 octave_value_list
4247 fc9a075d10fb [project @ 2002-12-30 23:05:27 by jwe] jwe parents: 4245 diff changeset	283 octave_user_function::subsref (const std::string& type,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	284 const std::list<octave_value_list>& idx,
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	285 int nargout)
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	286 {
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	287 octave_value_list retval;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	288
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	289 switch (type[0])
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	290 {
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	291 case '(':
5154 9cb38bfb04ea [project @ 2005-02-21 21:23:28 by jwe] jwe parents: 5105 diff changeset	292 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	293 int tmp_nargout = (type.length () > 1 && nargout == 0) ? 1 : nargout;
5154 9cb38bfb04ea [project @ 2005-02-21 21:23:28 by jwe] jwe parents: 5105 diff changeset	294
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	295 retval = do_multi_index_op (tmp_nargout, idx.front ());
5154 9cb38bfb04ea [project @ 2005-02-21 21:23:28 by jwe] jwe parents: 5105 diff changeset	296 }
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	297 break;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	298
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	299 case '{':
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	300 case '.':
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	301 {
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	302 std::string nm = type_name ();
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	303 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	304 }
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	305 break;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	306
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	307 default:
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	308 panic_impossible ();
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	309 }
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	310
5775 ace8d8d26933 [project @ 2006-04-24 19:13:06 by jwe] jwe parents: 5744 diff changeset	311 // FIXME -- perhaps there should be an
4059 db58c1a1e6ce [project @ 2002-09-18 07:21:12 by jwe] jwe parents: 3975 diff changeset	312 // octave_value_list::next_subsref member function? See also
db58c1a1e6ce [project @ 2002-09-18 07:21:12 by jwe] jwe parents: 3975 diff changeset	313 // octave_builtin::subsref.
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	314
4219 23d06c9e1edd [project @ 2002-12-06 21:29:17 by jwe] jwe parents: 4207 diff changeset	315 if (idx.size () > 1)
4994 48d0defe9445 [project @ 2004-09-15 20:31:31 by jwe] jwe parents: 4987 diff changeset	316 retval = retval(0).next_subsref (nargout, type, idx);
4059 db58c1a1e6ce [project @ 2002-09-18 07:21:12 by jwe] jwe parents: 3975 diff changeset	317
db58c1a1e6ce [project @ 2002-09-18 07:21:12 by jwe] jwe parents: 3975 diff changeset	318 return retval;
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	319 }
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	320
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	321 octave_value_list
3544 71bd2d124119 [project @ 2000-02-02 21:02:31 by jwe] jwe parents: 3523 diff changeset	322 octave_user_function::do_multi_index_op (int nargout,
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	323 const octave_value_list& args)
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	324 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	325 octave_value_list retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	326
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	327 if (error_state)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	328 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	329
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	330 if (! cmd_list)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	331 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	332
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	333 int nargin = args.length ();
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	334
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	335 unwind_protect frame;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	336
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	337 frame.protect_var (call_depth);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	338 call_depth++;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	339
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	340 if (call_depth >= Vmax_recursion_depth)
3131 9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	341 {
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	342 ::error ("max_recursion_limit exceeded");
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	343 return retval;
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	344 }
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	345
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	346 // Save old and set current symbol table context, for
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	347 // eval_undefined_error().
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	348
7901 3e4c9b69069d call stack changes John W. Eaton <jwe@octave.org> parents: 7761 diff changeset	349 octave_call_stack::push (this, local_scope, call_depth);
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	350 frame.add_fcn (octave_call_stack::pop);
7901 3e4c9b69069d call stack changes John W. Eaton <jwe@octave.org> parents: 7761 diff changeset	351
7752 40c428ea3408 initial implementation of dbup and dbdown John W. Eaton <jwe@octave.org> parents: 7736 diff changeset	352 if (call_depth > 0)
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	353 {
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	354 symbol_table::push_context ();
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	355
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	356 frame.add_fcn (symbol_table::pop_context);
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	357 }
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	358
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	359 string_vector arg_names = args.name_tags ();
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	360
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	361 if (param_list && ! param_list->varargs_only ())
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	362 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	363 param_list->define_from_arg_vector (args);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	364 if (error_state)
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	365 return retval;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	366 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	367
3239 d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	368 // Force parameter list to be undefined when this function exits.
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	369 // Doing so decrements the reference counts on the values of local
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	370 // variables that are also named function parameters.
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	371
9396 17af7cce7d1b yet more unwind_protect improvements Jaroslav Hajek <highegg@gmail.com> parents: 9377 diff changeset	372 if (param_list)
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	373 frame.add_method (param_list, &tree_parameter_list::undefine);
3239 d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	374
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	375 // Force return list to be undefined when this function exits.
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	376 // Doing so decrements the reference counts on the values of local
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	377 // variables that are also named values returned by this function.
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	378
9396 17af7cce7d1b yet more unwind_protect improvements Jaroslav Hajek <highegg@gmail.com> parents: 9377 diff changeset	379 if (ret_list)
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	380 frame.add_method (ret_list, &tree_parameter_list::undefine);
3239 d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe] jwe parents: 3219 diff changeset	381
8142 54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	382 if (call_depth == 0)
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	383 {
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	384 // Force symbols to be undefined again when this function
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	385 // exits.
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	386 //
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	387 // This cleanup function is added to the unwind_protect stack
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	388 // after the calls to clear the parameter lists so that local
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	389 // variables will be cleared before the parameter lists are
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	390 // cleared. That way, any function parameters that have been
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	391 // declared global will be unmarked as global before they are
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	392 // undefined by the clear_param_list cleanup function.
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	393
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	394 frame.add_fcn (symbol_table::clear_variables);
8142 54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	395 }
54b41376e381 ov-usr-fcn.cc (octave_user_function::do_multi_index_op): add symbol_table::clear_variables cleanup function to the unwind_protect stack after the parameter list cleanup functions John W. Eaton <jwe@octave.org> parents: 8013 diff changeset	396
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	397 bind_automatic_vars (arg_names, nargin, nargout, all_va_args (args));
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	398
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	399 bool echo_commands = (Vecho_executing_commands & ECHO_FUNCTIONS);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	400
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	401 if (echo_commands)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	402 print_code_function_header ();
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	403
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	404 // Evaluate the commands that make up the function.
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	405
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	406 frame.protect_var (tree_evaluator::in_fcn_or_script_body);
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	407 tree_evaluator::in_fcn_or_script_body = true;
3489 cbee5fbb696d [project @ 2000-01-28 09:14:32 by jwe] jwe parents: 3445 diff changeset	408
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	409 bool special_expr = (is_inline_function ()
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	410 \|\| cmd_list->is_anon_function_body ());
8658 73c4516fae10 New evaluator and debugger derived from tree-walker class John W. Eaton <jwe@octave.org> parents: 8580 diff changeset	411
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	412 if (special_expr)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	413 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	414 assert (cmd_list->length () == 1);
6657 86354a8cd6a7 [project @ 2007-05-23 04:35:04 by jwe] jwe parents: 6591 diff changeset	415
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	416 tree_statement *stmt = 0;
8658 73c4516fae10 New evaluator and debugger derived from tree-walker class John W. Eaton <jwe@octave.org> parents: 8580 diff changeset	417
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	418 if ((stmt = cmd_list->front ())
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	419 && stmt->is_expression ())
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	420 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	421 tree_expression *expr = stmt->expression ();
8658 73c4516fae10 New evaluator and debugger derived from tree-walker class John W. Eaton <jwe@octave.org> parents: 8580 diff changeset	422
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	423 retval = expr->rvalue (nargout);
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	424 }
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	425 }
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	426 else
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	427 cmd_list->accept (*current_evaluator);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	428
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	429 if (echo_commands)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	430 print_code_function_trailer ();
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	431
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	432 if (tree_return_command::returning)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	433 tree_return_command::returning = 0;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	434
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	435 if (tree_break_command::breaking)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	436 tree_break_command::breaking--;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	437
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	438 if (error_state)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	439 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	440 octave_call_stack::backtrace_error_message ();
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	441 return retval;
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	442 }
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	443
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	444 // Copy return values out.
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	445
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	446 if (ret_list && ! special_expr)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	447 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	448 ret_list->initialize_undefined_elements (my_name, nargout, Matrix ());
5848 415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	449
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	450 Cell varargout;
6591 fc0218995ee7 [project @ 2007-04-27 02:17:34 by jwe] jwe parents: 6505 diff changeset	451
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	452 if (ret_list->takes_varargs ())
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	453 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	454 octave_value varargout_varval = symbol_table::varval ("varargout");
5848 415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	455
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	456 if (varargout_varval.is_defined ())
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	457 {
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	458 varargout = varargout_varval.cell_value ();
5848 415ae81d331b [project @ 2006-06-08 20:37:29 by jwe] jwe parents: 5823 diff changeset	459
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	460 if (error_state)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	461 error ("expecting varargout to be a cell array object");
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	462 }
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	463 }
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	464
10066 2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	465 if (! error_state)
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	466 retval = ret_list->convert_to_const_vector (nargout, varargout);
2cd940306a06 make unwind_protect frames local Jaroslav Hajek <highegg@gmail.com> parents: 10001 diff changeset	467 }
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	468
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	469 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	470 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	471
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	472 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	473 octave_user_function::accept (tree_walker& tw)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	474 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	475 tw.visit_octave_user_function (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	476 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	477
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	478 bool
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	479 octave_user_function::subsasgn_optimization_ok (void)
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	480 {
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	481 bool retval = false;
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	482 if (Voptimize_subsasgn_calls
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	483 && param_list->length () > 0 && ! param_list->varargs_only ()
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	484 && ret_list->length () == 1 && ! ret_list->takes_varargs ())
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	485 {
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	486 tree_identifier *par1 = param_list->front ()->ident ();
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	487 tree_identifier *ret1 = ret_list->front ()->ident ();
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	488 retval = par1->name () == ret1->name ();
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	489 }
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	490
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	491 return retval;
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	492 }
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	493
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	494 #if 0
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	495 void
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	496 octave_user_function::print_symtab_info (std::ostream& os) const
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	497 {
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	498 symbol_table::print_info (os, local_scope);
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	499 }
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	500 #endif
3933 f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	501
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe] jwe parents: 3876 diff changeset	502 void
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	503 octave_user_function::print_code_function_header (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	504 {
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	505 tree_print_code tpc (octave_stdout, VPS4);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	506
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	507 tpc.visit_octave_user_function_header (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	508 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	509
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	510 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	511 octave_user_function::print_code_function_trailer (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	512 {
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	513 tree_print_code tpc (octave_stdout, VPS4);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	514
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	515 tpc.visit_octave_user_function_trailer (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	516 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	517
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	518 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	519 octave_user_function::bind_automatic_vars
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3933 diff changeset	520 (const string_vector& arg_names, int nargin, int nargout,
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3933 diff changeset	521 const octave_value_list& va_args)
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	522 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	523 if (! arg_names.empty ())
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	524 symbol_table::varref ("argn") = arg_names;
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	525
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	526 symbol_table::varref (".nargin.") = nargin;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	527 symbol_table::varref (".nargout.") = nargout;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	528
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	529 symbol_table::mark_hidden (".nargin.");
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	530 symbol_table::mark_hidden (".nargout.");
3974 e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3933 diff changeset	531
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe] jwe parents: 3933 diff changeset	532 if (takes_varargs ())
8580 188d38a553c7 further indexing optimization touches Jaroslav Hajek <highegg@gmail.com> parents: 8142 diff changeset	533 symbol_table::varref ("varargin") = va_args.cell_value ();
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	534 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	535
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	536 DEFUN (nargin, args, ,
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	537 "-- texinfo --\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	538 @deftypefn {Built-in Function} {} nargin ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	539 @deftypefnx {Built-in Function} {} nargin (@var{fcn_name})\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	540 Within a function, return the number of arguments passed to the function.\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	541 At the top level, return the number of command line arguments passed to\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	542 Octave. If called with the optional argument @var{fcn_name}, return the\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	543 maximum number of arguments the named function can accept, or -1 if the\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	544 function accepts a variable number of arguments.\n\
5642 2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe] jwe parents: 5339 diff changeset	545 @seealso{nargout, varargin, varargout}\n\
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	546 @end deftypefn")
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	547 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	548 octave_value retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	549
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	550 int nargin = args.length ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	551
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	552 if (nargin == 1)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	553 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	554 std::string fname = args(0).string_value ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	555
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	556 if (! error_state)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	557 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	558 octave_value fcn_val = symbol_table::find_user_function (fname);
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4929 diff changeset	559
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	560 octave_user_function *fcn = fcn_val.user_function_value (true);
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	561
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	562 if (fcn)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	563 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	564 if (fcn->takes_varargs ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	565 retval = -1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	566 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	567 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	568 tree_parameter_list *param_list = fcn->parameter_list ();
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	569
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	570 retval = param_list ? param_list->length () : 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	571 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	572 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	573 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	574 error ("nargin: invalid function");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	575 }
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	576 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	577 error ("nargin: expecting string as first argument");
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	578 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	579 else if (nargin == 0)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	580 {
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	581 retval = symbol_table::varval (".nargin.");
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	582
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	583 if (retval.is_undefined ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	584 retval = 0;
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	585 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	586 else
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5794 diff changeset	587 print_usage ();
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	588
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	589 return retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	590 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	591
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	592 DEFUN (nargout, args, ,
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	593 "-- texinfo --\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	594 @deftypefn {Built-in Function} {} nargout ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	595 @deftypefnx {Built-in Function} {} nargout (@var{fcn_name})\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	596 Within a function, return the number of values the caller expects to\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	597 receive. If called with the optional argument @var{fcn_name}, return the\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	598 maximum number of values the named function can produce, or -1 if the\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	599 function can produce a variable number of values.\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	600 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	601 For example,\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	602 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	603 @example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	604 f ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	605 @end example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	606 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	607 @noindent\n\
4704 e1b71baef20c [project @ 2004-01-22 04:03:21 by jwe] jwe parents: 4700 diff changeset	608 will cause @code{nargout} to return 0 inside the function @code{f} and\n\
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	609 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	610 @example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	611 [s, t] = f ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	612 @end example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	613 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	614 @noindent\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	615 will cause @code{nargout} to return 2 inside the function\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	616 @code{f}.\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	617 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	618 At the top level, @code{nargout} is undefined.\n\
5642 2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe] jwe parents: 5339 diff changeset	619 @seealso{nargin, varargin, varargout}\n\
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	620 @end deftypefn")
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	621 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	622 octave_value retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	623
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	624 int nargin = args.length ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	625
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	626 if (nargin == 1)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	627 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	628 std::string fname = args(0).string_value ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	629
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	630 if (! error_state)
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	631 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	632 octave_value fcn_val = symbol_table::find_user_function (fname);
4930 bdb307dc8613 [project @ 2004-08-05 04:55:26 by jwe] jwe parents: 4929 diff changeset	633
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	634 octave_user_function *fcn = fcn_val.user_function_value (true);
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	635
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	636 if (fcn)
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	637 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	638 if (fcn->takes_var_return ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	639 retval = -1;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	640 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	641 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	642 tree_parameter_list *ret_list = fcn->return_list ();
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	643
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	644 retval = ret_list ? ret_list->length () : 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	645 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	646 }
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	647 else
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	648 error ("nargout: invalid function");
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	649 }
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	650 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	651 error ("nargout: expecting string as first argument");
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	652 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	653 else if (nargin == 0)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	654 {
7336 745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe] jwe parents: 7017 diff changeset	655 if (! symbol_table::at_top_level ())
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	656 {
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	657 retval = symbol_table::varval (".nargout.");
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	658
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	659 if (retval.is_undefined ())
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	660 retval = 0;
57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	661 }
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	662 else
10315 57a59eae83cc untabify src C++ source files John W. Eaton <jwe@octave.org> parents: 10160 diff changeset	663 error ("nargout: invalid call at top level");
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	664 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	665 else
5823 080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe] jwe parents: 5794 diff changeset	666 print_usage ();
4700 ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	667
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	668 return retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	669 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe] jwe parents: 4645 diff changeset	670
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	671 DEFUN (max_recursion_depth, args, nargout,
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	672 "-- texinfo --\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	673 @deftypefn {Built-in Function} {@var{val} =} max_recursion_depth ()\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	674 @deftypefnx {Built-in Function} {@var{old_val} =} max_recursion_depth (@var{new_val})\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	675 Query or set the internal limit on the number of times a function may\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	676 be called recursively. If the limit is exceeded, an error message is\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	677 printed and control returns to the top level.\n\
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	678 @end deftypefn")
3131 9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe] jwe parents: 3014 diff changeset	679 {
5794 1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe] jwe parents: 5775 diff changeset	680 return SET_INTERNAL_VARIABLE (max_recursion_depth);
2974 ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	681 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe] jwe parents: diff changeset	682
9522 e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	683 DEFUN (optimize_subsasgn_calls, args, nargout,
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	684 "-- texinfo --\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	685 @deftypefn {Built-in Function} {@var{val} =} optimize_subsasgn_calls ()\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	686 @deftypefnx {Built-in Function} {@var{old_val} =} optimize_subsasgn_calls (@var{new_val})\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	687 Query or set the internal flag for subsasgn method call optimizations.\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	688 If true, Octave will attempt to eliminate the redundant copying when calling\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	689 subsasgn method of a user-defined class.\n\
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	690 @end deftypefn")
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	691 {
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	692 return SET_INTERNAL_VARIABLE (optimize_subsasgn_calls);
e79470be3ecb implement subsasgn this-arg optimization Jaroslav Hajek <highegg@gmail.com> parents: 9396 diff changeset	693 }

Mercurial > octave-nkf

annotate src/ov-usr-fcn.cc @ 10315:57a59eae83cc