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annotate src/ov-usr-fcn.cc @ 10832:1b2fcd122c6a

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allow user detect ignored outputs in m-functions
author Jaroslav Hajek <highegg@gmail.com>
date Thu, 29 Jul 2010 12:45:23 +0200
parents 9cd5aa83fa62
children 89f4d7e294cc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005,
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4 2006, 2007, 2008, 2009 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 #include "str-vec.h"
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29
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30 #include <defaults.h>
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31 #include "Cell.h"
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32 #include "defun.h"
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33 #include "error.h"
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34 #include "gripes.h"
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35 #include "input.h"
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36 #include "oct-obj.h"
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37 #include "ov-usr-fcn.h"
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38 #include "ov.h"
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39 #include "pager.h"
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40 #include "pt-eval.h"
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41 #include "pt-jump.h"
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42 #include "pt-misc.h"
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43 #include "pt-pr-code.h"
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44 #include "pt-stmt.h"
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45 #include "pt-walk.h"
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46 #include "symtab.h"
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47 #include "toplev.h"
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48 #include "unwind-prot.h"
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49 #include "utils.h"
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50 #include "parse.h"
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51 #include "variables.h"
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52
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53 // Whether to optimize subsasgn method calls.
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54 static bool Voptimize_subsasgn_calls = true;
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55
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56 // User defined scripts.
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57
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58 DEFINE_OCTAVE_ALLOCATOR (octave_user_script);
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59
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60 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_user_script,
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61 "user-defined script",
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62 "user-defined script");
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63
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64 octave_user_script::octave_user_script (void)
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65 : octave_user_code (), cmd_list (0), file_name (),
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66 t_parsed (static_cast<time_t> (0)),
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67 t_checked (static_cast<time_t> (0)),
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68 call_depth (-1)
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69 { }
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70
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71 octave_user_script::octave_user_script (const std::string& fnm,
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72 const std::string& nm,
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73 tree_statement_list *cmds,
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74 const std::string& ds)
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75 : octave_user_code (nm, ds), cmd_list (cmds), file_name (fnm),
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76 t_parsed (static_cast<time_t> (0)),
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77 t_checked (static_cast<time_t> (0)),
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78 call_depth (-1)
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79 {
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80 if (cmd_list)
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81 cmd_list->mark_as_script_body ();
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82 }
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83
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84 octave_user_script::octave_user_script (const std::string& fnm,
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85 const std::string& nm,
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86 const std::string& ds)
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87 : octave_user_code (nm, ds), cmd_list (0), file_name (fnm),
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88 t_parsed (static_cast<time_t> (0)),
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89 t_checked (static_cast<time_t> (0)),
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90 call_depth (-1)
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91 { }
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92
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93 octave_user_script::~octave_user_script (void)
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94 {
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95 delete cmd_list;
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96 }
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97
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98 octave_value_list
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99 octave_user_script::subsref (const std::string&,
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100 const std::list<octave_value_list>&, int)
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101 {
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102 octave_value_list retval;
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103
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104 ::error ("invalid use of script %s in index expression", file_name.c_str ());
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105
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106 return retval;
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107 }
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108
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109 octave_value_list
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110 octave_user_script::do_multi_index_op (int nargout,
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111 const octave_value_list& args)
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112 {
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113 octave_value_list retval;
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114
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115 unwind_protect frame;
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116
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117 if (! error_state)
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118 {
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119 if (args.length () == 0 && nargout == 0)
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120 {
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121 if (cmd_list)
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122 {
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123 frame.protect_var (call_depth);
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124 call_depth++;
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125
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126 if (call_depth < Vmax_recursion_depth)
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127 {
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128 octave_call_stack::push (this);
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129
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130 frame.add_fcn (octave_call_stack::pop);
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131
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132 frame.protect_var (tree_evaluator::in_fcn_or_script_body);
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133 tree_evaluator::in_fcn_or_script_body = true;
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134
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135 cmd_list->accept (*current_evaluator);
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136
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137 if (tree_return_command::returning)
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138 tree_return_command::returning = 0;
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139
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140 if (tree_break_command::breaking)
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141 tree_break_command::breaking--;
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142
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143 if (error_state)
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144 octave_call_stack::backtrace_error_message ();
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145 }
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146 else
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147 ::error ("max_recursion_depth exceeded");
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148 }
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149 }
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150 else
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151 error ("invalid call to script %s", file_name.c_str ());
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152 }
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153
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154 return retval;
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155 }
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156
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157 void
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diff changeset
158 octave_user_script::accept (tree_walker& tw)
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diff changeset
159 {
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diff changeset
160 tw.visit_octave_user_script (*this);
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diff changeset
161 }
5b4d278ec828 parse scripts completely before executing
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162
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163 // User defined functions.
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164
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165 DEFINE_OCTAVE_ALLOCATOR (octave_user_function);
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166
3219
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diff changeset
167 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_user_function,
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168 "user-defined function",
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diff changeset
169 "user-defined function");
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170
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171 // Ugh. This really needs to be simplified (code/data?
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172 // extrinsic/intrinsic state?).
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173
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174 octave_user_function::octave_user_function
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175 (symbol_table::scope_id sid, tree_parameter_list *pl,
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176 tree_parameter_list *rl, tree_statement_list *cl)
7719
87eda1f8faaa octave_user_code: new base class for octave_user_script and octave_user_function
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177 : octave_user_code (std::string (), std::string ()),
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178 param_list (pl), ret_list (rl), cmd_list (cl),
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179 lead_comm (), trail_comm (), file_name (),
6323
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180 parent_name (), t_parsed (static_cast<time_t> (0)),
3255
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diff changeset
181 t_checked (static_cast<time_t> (0)),
7752
40c428ea3408 initial implementation of dbup and dbdown
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182 system_fcn_file (false), call_depth (-1),
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183 num_named_args (param_list ? param_list->length () : 0),
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184 nested_function (false), inline_function (false),
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185 class_constructor (false), class_method (false),
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186 parent_scope (-1), local_scope (sid),
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187 curr_unwind_protect_frame (0)
7736
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188 {
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189 if (cmd_list)
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diff changeset
190 cmd_list->mark_as_function_body ();
9639
8d79f36ebdde store scope->function pointer
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191
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192 if (local_scope >= 0)
8d79f36ebdde store scope->function pointer
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diff changeset
193 symbol_table::set_curr_fcn (this, local_scope);
7736
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194 }
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195
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196 octave_user_function::~octave_user_function (void)
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197 {
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198 delete param_list;
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199 delete ret_list;
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200 delete cmd_list;
3665
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201 delete lead_comm;
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202 delete trail_comm;
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diff changeset
203
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diff changeset
204 symbol_table::erase_scope (local_scope);
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205 }
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206
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diff changeset
207 octave_user_function *
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diff changeset
208 octave_user_function::define_ret_list (tree_parameter_list *t)
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209 {
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diff changeset
210 ret_list = t;
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diff changeset
211
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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212 return this;
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213 }
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diff changeset
214
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
215 void
4343
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216 octave_user_function::stash_fcn_file_name (const std::string& nm)
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217 {
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218 file_name = nm;
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219 }
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220
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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221 void
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222 octave_user_function::mark_as_system_fcn_file (void)
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223 {
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diff changeset
224 if (! file_name.empty ())
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diff changeset
225 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
226 // We really should stash the whole path to the file we found,
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
227 // when we looked it up, to avoid possible race conditions...
5775
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diff changeset
228 // FIXME
2974
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229 //
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
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230 // We probably also don't need to get the library directory
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jwe
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diff changeset
231 // every time, but since this function is only called when the
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
232 // function file is parsed, it probably doesn't matter that
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
233 // much.
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diff changeset
234
3523
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diff changeset
235 std::string ff_name = fcn_file_in_path (file_name);
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diff changeset
236
3565
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diff changeset
237 if (Vfcn_file_dir == ff_name.substr (0, Vfcn_file_dir.length ()))
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diff changeset
238 system_fcn_file = 1;
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diff changeset
239 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
240 else
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
241 system_fcn_file = 0;
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diff changeset
242 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
243
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
244 bool
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245 octave_user_function::takes_varargs (void) const
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diff changeset
246 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
247 return (param_list && param_list->takes_varargs ());
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diff changeset
248 }
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diff changeset
249
5848
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diff changeset
250 bool
415ae81d331b [project @ 2006-06-08 20:37:29 by jwe]
jwe
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diff changeset
251 octave_user_function::takes_var_return (void) const
2974
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252 {
5848
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diff changeset
253 return (ret_list && ret_list->takes_varargs ());
2974
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diff changeset
254 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
255
7761
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diff changeset
256 void
5adeea5de26c symbol table reporting functions
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diff changeset
257 octave_user_function::lock_subfunctions (void)
5adeea5de26c symbol table reporting functions
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diff changeset
258 {
5adeea5de26c symbol table reporting functions
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diff changeset
259 symbol_table::lock_subfunctions (local_scope);
5adeea5de26c symbol table reporting functions
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diff changeset
260 }
5adeea5de26c symbol table reporting functions
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diff changeset
261
5adeea5de26c symbol table reporting functions
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diff changeset
262 void
5adeea5de26c symbol table reporting functions
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diff changeset
263 octave_user_function::unlock_subfunctions (void)
5adeea5de26c symbol table reporting functions
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diff changeset
264 {
5adeea5de26c symbol table reporting functions
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diff changeset
265 symbol_table::unlock_subfunctions (local_scope);
5adeea5de26c symbol table reporting functions
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diff changeset
266 }
5adeea5de26c symbol table reporting functions
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diff changeset
267
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268 octave_value_list
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diff changeset
269 octave_user_function::all_va_args (const octave_value_list& args)
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diff changeset
270 {
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parents:
diff changeset
271 octave_value_list retval;
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diff changeset
272
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diff changeset
273 octave_idx_type n = args.length () - num_named_args;
2974
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diff changeset
274
3178
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parents: 3165
diff changeset
275 if (n > 0)
9522
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diff changeset
276 retval = args.slice (num_named_args, n);
2974
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diff changeset
277
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
278 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
279 }
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 octave_value_list
4247
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diff changeset
282 octave_user_function::subsref (const std::string& type,
10315
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diff changeset
283 const std::list<octave_value_list>& idx,
57a59eae83cc untabify src C++ source files
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diff changeset
284 int nargout)
3933
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diff changeset
285 {
10832
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diff changeset
286 return octave_user_function::subsref (type, idx, nargout, 0);
1b2fcd122c6a allow user detect ignored outputs in m-functions
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diff changeset
287 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
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diff changeset
288
1b2fcd122c6a allow user detect ignored outputs in m-functions
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diff changeset
289 octave_value_list
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diff changeset
290 octave_user_function::subsref (const std::string& type,
1b2fcd122c6a allow user detect ignored outputs in m-functions
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parents: 10637
diff changeset
291 const std::list<octave_value_list>& idx,
1b2fcd122c6a allow user detect ignored outputs in m-functions
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diff changeset
292 int nargout, const std::list<octave_lvalue>* lvalue_list)
1b2fcd122c6a allow user detect ignored outputs in m-functions
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parents: 10637
diff changeset
293 {
3933
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parents: 3876
diff changeset
294 octave_value_list retval;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
295
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
296 switch (type[0])
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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parents: 3876
diff changeset
297 {
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
298 case '(':
5154
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jwe
parents: 5105
diff changeset
299 {
10315
57a59eae83cc untabify src C++ source files
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diff changeset
300 int tmp_nargout = (type.length () > 1 && nargout == 0) ? 1 : nargout;
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301
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302 retval = do_multi_index_op (tmp_nargout, idx.front (),
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303 idx.size () == 1 ? lvalue_list : 0);
5154
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304 }
3933
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diff changeset
305 break;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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diff changeset
306
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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diff changeset
307 case '{':
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308 case '.':
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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parents: 3876
diff changeset
309 {
10315
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parents: 10160
diff changeset
310 std::string nm = type_name ();
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
311 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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diff changeset
312 }
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313 break;
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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314
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
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diff changeset
315 default:
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316 panic_impossible ();
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317 }
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318
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319 // FIXME -- perhaps there should be an
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320 // octave_value_list::next_subsref member function? See also
db58c1a1e6ce [project @ 2002-09-18 07:21:12 by jwe]
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321 // octave_builtin::subsref.
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322
4219
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diff changeset
323 if (idx.size () > 1)
4994
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324 retval = retval(0).next_subsref (nargout, type, idx);
4059
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325
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326 return retval;
3933
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327 }
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328
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329 octave_value_list
3544
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330 octave_user_function::do_multi_index_op (int nargout,
10315
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331 const octave_value_list& args)
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332 {
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333 return do_multi_index_op (nargout, args, 0);
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334 }
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335
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336 octave_value_list
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337 octave_user_function::do_multi_index_op (int nargout,
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338 const octave_value_list& args,
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339 const std::list<octave_lvalue>* lvalue_list)
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340 {
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341 octave_value_list retval;
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342
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343 if (error_state)
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344 return retval;
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345
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346 if (! cmd_list)
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347 return retval;
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348
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349 int nargin = args.length ();
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350
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351 unwind_protect frame;
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352
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353 frame.protect_var (call_depth);
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354 call_depth++;
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355
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356 if (call_depth >= Vmax_recursion_depth)
3131
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diff changeset
357 {
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cb0883127251 limit on recursion via calls to source function
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358 ::error ("max_recursion_depth exceeded");
3131
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diff changeset
359 return retval;
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe]
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parents: 3014
diff changeset
360 }
9c5160c83bd2 [project @ 1998-01-29 04:46:33 by jwe]
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diff changeset
361
7336
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diff changeset
362 // Save old and set current symbol table context, for
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
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diff changeset
363 // eval_undefined_error().
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
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diff changeset
364
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diff changeset
365 octave_call_stack::push (this, local_scope, call_depth);
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366 frame.add_fcn (octave_call_stack::pop);
7901
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diff changeset
367
7752
40c428ea3408 initial implementation of dbup and dbdown
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diff changeset
368 if (call_depth > 0)
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369 {
7336
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diff changeset
370 symbol_table::push_context ();
2974
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371
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372 frame.add_fcn (symbol_table::pop_context);
7336
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diff changeset
373 }
2974
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374
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
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diff changeset
375 string_vector arg_names = args.name_tags ();
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diff changeset
376
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
377 if (param_list && ! param_list->varargs_only ())
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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parents:
diff changeset
378 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
379 param_list->define_from_arg_vector (args);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
380 if (error_state)
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diff changeset
381 return retval;
2974
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parents:
diff changeset
382 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
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diff changeset
383
3239
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe]
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parents: 3219
diff changeset
384 // 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
385 // Doing so decrements the reference counts on the values of local
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe]
jwe
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diff changeset
386 // variables that are also named function parameters.
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jwe
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diff changeset
387
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17af7cce7d1b yet more unwind_protect improvements
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diff changeset
388 if (param_list)
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diff changeset
389 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
390
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe]
jwe
parents: 3219
diff changeset
391 // 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
392 // 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
393 // variables that are also named values returned by this function.
d54ef0aa6e82 [project @ 1999-03-27 17:40:45 by jwe]
jwe
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diff changeset
394
9396
17af7cce7d1b yet more unwind_protect improvements
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parents: 9377
diff changeset
395 if (ret_list)
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diff changeset
396 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
397
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
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parents: 8013
diff changeset
398 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
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parents: 8013
diff changeset
399 {
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
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parents: 8013
diff changeset
400 // 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
401 // 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
402 //
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
403 // 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
404 // 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
405 // 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
406 // 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
407 // 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
408 // 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
409
10066
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parents: 10001
diff changeset
410 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
411 }
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
412
10832
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
413 bind_automatic_vars (arg_names, nargin, nargout, all_va_args (args),
1b2fcd122c6a allow user detect ignored outputs in m-functions
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parents: 10637
diff changeset
414 lvalue_list);
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
415
10066
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
416 bool echo_commands = (Vecho_executing_commands & ECHO_FUNCTIONS);
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
417
10066
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
418 if (echo_commands)
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
419 print_code_function_header ();
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
420
10637
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
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parents: 10578
diff changeset
421 // Set pointer to the current unwind_protect frame to allow
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
Jaroslav Hajek <highegg@gmail.com>
parents: 10578
diff changeset
422 // certain builtins register simple cleanup in a very optimized manner.
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
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parents: 10578
diff changeset
423 // This is *not* intended as a general-purpose on-cleanup mechanism,
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
Jaroslav Hajek <highegg@gmail.com>
parents: 10578
diff changeset
424 frame.protect_var (curr_unwind_protect_frame);
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
Jaroslav Hajek <highegg@gmail.com>
parents: 10578
diff changeset
425 curr_unwind_protect_frame = &frame;
9cd5aa83fa62 implement 'local' parameter to pseudo-variables
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parents: 10578
diff changeset
426
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
427 // Evaluate the commands that make up the function.
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
428
10066
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
429 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
430 tree_evaluator::in_fcn_or_script_body = true;
3489
cbee5fbb696d [project @ 2000-01-28 09:14:32 by jwe]
jwe
parents: 3445
diff changeset
431
10066
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
432 bool special_expr = (is_inline_function ()
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
433 || 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
434
10066
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
435 if (special_expr)
2cd940306a06 make unwind_protect frames local
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parents: 10001
diff changeset
436 {
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
437 assert (cmd_list->length () == 1);
6657
86354a8cd6a7 [project @ 2007-05-23 04:35:04 by jwe]
jwe
parents: 6591
diff changeset
438
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
439 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
440
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
441 if ((stmt = cmd_list->front ())
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
442 && stmt->is_expression ())
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 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
445
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
446 retval = expr->rvalue (nargout);
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 }
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
449 else
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
450 cmd_list->accept (*current_evaluator);
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
451
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
452 if (echo_commands)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
453 print_code_function_trailer ();
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
454
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
455 if (tree_return_command::returning)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
456 tree_return_command::returning = 0;
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
457
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
458 if (tree_break_command::breaking)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
459 tree_break_command::breaking--;
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
460
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
461 if (error_state)
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 octave_call_stack::backtrace_error_message ();
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
464 return retval;
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
465 }
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
466
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
467 // Copy return values out.
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
468
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
469 if (ret_list && ! special_expr)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
470 {
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
471 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
472
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
473 Cell varargout;
6591
fc0218995ee7 [project @ 2007-04-27 02:17:34 by jwe]
jwe
parents: 6505
diff changeset
474
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
475 if (ret_list->takes_varargs ())
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
476 {
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
477 octave_value varargout_varval = symbol_table::varval ("varargout");
5848
415ae81d331b [project @ 2006-06-08 20:37:29 by jwe]
jwe
parents: 5823
diff changeset
478
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
479 if (varargout_varval.is_defined ())
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
480 {
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
481 varargout = varargout_varval.cell_value ();
5848
415ae81d331b [project @ 2006-06-08 20:37:29 by jwe]
jwe
parents: 5823
diff changeset
482
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
483 if (error_state)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
484 error ("expecting varargout to be a cell array object");
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
485 }
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
486 }
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
487
10066
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
488 if (! error_state)
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
489 retval = ret_list->convert_to_const_vector (nargout, varargout);
2cd940306a06 make unwind_protect frames local
Jaroslav Hajek <highegg@gmail.com>
parents: 10001
diff changeset
490 }
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
491
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
492 return retval;
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
493 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
494
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
495 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
496 octave_user_function::accept (tree_walker& tw)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
497 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
498 tw.visit_octave_user_function (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
499 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
500
9522
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
501 bool
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
502 octave_user_function::subsasgn_optimization_ok (void)
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
503 {
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
504 bool retval = false;
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
505 if (Voptimize_subsasgn_calls
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
506 && param_list->length () > 0 && ! param_list->varargs_only ()
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
507 && ret_list->length () == 1 && ! ret_list->takes_varargs ())
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
508 {
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
509 tree_identifier *par1 = param_list->front ()->ident ();
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
510 tree_identifier *ret1 = ret_list->front ()->ident ();
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
511 retval = par1->name () == ret1->name ();
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
512 }
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
513
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
514 return retval;
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
515 }
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
516
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
517 #if 0
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
518 void
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
519 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
520 {
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
521 symbol_table::print_info (os, local_scope);
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
522 }
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
523 #endif
3933
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
524
f9ea3dcf58ee [project @ 2002-05-15 03:21:00 by jwe]
jwe
parents: 3876
diff changeset
525 void
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
526 octave_user_function::print_code_function_header (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
527 {
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5775
diff changeset
528 tree_print_code tpc (octave_stdout, VPS4);
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
529
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
530 tpc.visit_octave_user_function_header (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
531 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
532
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
533 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
534 octave_user_function::print_code_function_trailer (void)
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
535 {
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5775
diff changeset
536 tree_print_code tpc (octave_stdout, VPS4);
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
537
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
538 tpc.visit_octave_user_function_trailer (*this);
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
539 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
540
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
541 void
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
542 octave_user_function::bind_automatic_vars
3974
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe]
jwe
parents: 3933
diff changeset
543 (const string_vector& arg_names, int nargin, int nargout,
10832
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
544 const octave_value_list& va_args, const std::list<octave_lvalue> *lvalue_list)
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
545 {
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
546 if (! arg_names.empty ())
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
547 symbol_table::varref ("argn") = arg_names;
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
548
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
549 symbol_table::varref (".nargin.") = nargin;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
550 symbol_table::varref (".nargout.") = nargout;
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
551
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
552 symbol_table::mark_hidden (".nargin.");
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
553 symbol_table::mark_hidden (".nargout.");
3974
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe]
jwe
parents: 3933
diff changeset
554
e2290bf911f0 [project @ 2002-07-04 17:38:22 by jwe]
jwe
parents: 3933
diff changeset
555 if (takes_varargs ())
8580
188d38a553c7 further indexing optimization touches
Jaroslav Hajek <highegg@gmail.com>
parents: 8142
diff changeset
556 symbol_table::varref ("varargin") = va_args.cell_value ();
10832
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
557
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
558 if (lvalue_list)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
559 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
560 octave_idx_type nbh = 0;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
561 for (std::list<octave_lvalue>::const_iterator p = lvalue_list->begin ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
562 p != lvalue_list->end (); p++)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
563 nbh += p->is_black_hole ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
564
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
565 if (nbh > 0)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
566 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
567 // Only assign the hidden variable if black holes actually present.
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
568 Matrix bh (1, nbh);
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
569 octave_idx_type k = 0, l = 0;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
570 for (std::list<octave_lvalue>::const_iterator p = lvalue_list->begin ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
571 p != lvalue_list->end (); p++)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
572 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
573 if (p->is_black_hole ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
574 bh(l++) = k+1;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
575 k += p->numel ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
576 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
577
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
578 symbol_table::varref (".ignored.") = bh;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
579 symbol_table::mark_hidden (".ignored.");
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
580 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
581 }
2974
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
582 }
ebbc34ff7f66 [project @ 1997-05-15 19:36:16 by jwe]
jwe
parents:
diff changeset
583
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
584 DEFUN (nargin, args, ,
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
585 "-*- texinfo -*-\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
586 @deftypefn {Built-in Function} {} nargin ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
587 @deftypefnx {Built-in Function} {} nargin (@var{fcn_name})\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
588 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
589 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
590 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
591 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
592 function accepts a variable number of arguments.\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5339
diff changeset
593 @seealso{nargout, varargin, varargout}\n\
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
594 @end deftypefn")
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
595 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
596 octave_value retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
597
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
598 int nargin = args.length ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
599
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
600 if (nargin == 1)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
601 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
602 std::string fname = args(0).string_value ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
603
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
604 if (! error_state)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
605 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
606 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
607
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
608 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
609
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
610 if (fcn)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
611 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
612 if (fcn->takes_varargs ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
613 retval = -1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
614 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
615 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
616 tree_parameter_list *param_list = fcn->parameter_list ();
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
617
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
618 retval = param_list ? param_list->length () : 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
619 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
620 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
621 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
622 error ("nargin: invalid function");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
623 }
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
624 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
625 error ("nargin: expecting string as first argument");
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
626 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
627 else if (nargin == 0)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
628 {
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
629 retval = symbol_table::varval (".nargin.");
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
630
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
631 if (retval.is_undefined ())
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
632 retval = 0;
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
633 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
634 else
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5794
diff changeset
635 print_usage ();
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
636
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
637 return retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
638 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
639
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
640 DEFUN (nargout, args, ,
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
641 "-*- texinfo -*-\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
642 @deftypefn {Built-in Function} {} nargout ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
643 @deftypefnx {Built-in Function} {} nargout (@var{fcn_name})\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
644 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
645 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
646 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
647 function can produce a variable number of values.\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
648 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
649 For example,\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
650 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
651 @example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
652 f ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
653 @end example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
654 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
655 @noindent\n\
4704
e1b71baef20c [project @ 2004-01-22 04:03:21 by jwe]
jwe
parents: 4700
diff changeset
656 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
657 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
658 @example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
659 [s, t] = f ()\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
660 @end example\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
661 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
662 @noindent\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
663 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
664 @code{f}.\n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
665 \n\
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
666 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
667 @seealso{nargin, varargin, varargout}\n\
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
668 @end deftypefn")
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 octave_value retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
671
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
672 int nargin = args.length ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
673
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
674 if (nargin == 1)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
675 {
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
676 std::string fname = args(0).string_value ();
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
677
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
678 if (! error_state)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
679 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
680 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
681
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
682 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
683
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
684 if (fcn)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
685 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
686 if (fcn->takes_var_return ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
687 retval = -1;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
688 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
689 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
690 tree_parameter_list *ret_list = fcn->return_list ();
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
691
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
692 retval = ret_list ? ret_list->length () : 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
693 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
694 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
695 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
696 error ("nargout: invalid function");
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
697 }
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
698 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
699 error ("nargout: expecting string as first argument");
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
700 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
701 else if (nargin == 0)
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
702 {
7336
745a8299c2b5 [project @ 2007-12-28 20:56:55 by jwe]
jwe
parents: 7017
diff changeset
703 if (! symbol_table::at_top_level ())
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
704 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
705 retval = symbol_table::varval (".nargout.");
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
706
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
707 if (retval.is_undefined ())
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
708 retval = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
709 }
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
710 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
711 error ("nargout: invalid call at top level");
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
712 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
713 else
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5794
diff changeset
714 print_usage ();
4700
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
715
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
716 return retval;
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
717 }
ca3a1d687bba [project @ 2004-01-21 03:28:31 by jwe]
jwe
parents: 4645
diff changeset
718
9522
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
719 DEFUN (optimize_subsasgn_calls, args, nargout,
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
720 "-*- texinfo -*-\n\
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
721 @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
722 @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
723 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
724 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
725 subsasgn method of a user-defined class.\n\
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
726 @end deftypefn")
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
727 {
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
728 return SET_INTERNAL_VARIABLE (optimize_subsasgn_calls);
e79470be3ecb implement subsasgn this-arg optimization
Jaroslav Hajek <highegg@gmail.com>
parents: 9396
diff changeset
729 }
10832
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
730
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
731 static bool val_in_table (const Matrix& table, double val)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
732 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
733 if (table.is_empty ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
734 return false;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
735
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
736 octave_idx_type i = table.lookup (val, ASCENDING);
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
737 return (i > 0 && table(i-1) == val);
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
738 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
739
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
740 DEFUN (is_ignored_output, args, ,
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
741 "-*- texinfo -*-\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
742 @deftypefn {Built-in Function} {} is_ignored_output (@var{k})\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
743 Within a function, given an index @var{k} within the range @code{1:nargout},\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
744 return a logical value indicating whether the argument will be ignored on output\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
745 using the tilde (~) special output argument. If @var{k} is outside the range,\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
746 the function yields false. @var{k} can also be an array, in which case the function\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
747 works element-wise and a logical array is returned.\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
748 \n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
749 At the top level, @code{is_ignored_output} returns an error.\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
750 @seealso{nargout, nargin, varargin, varargout}\n\
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
751 @end deftypefn")
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
752 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
753 octave_value retval;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
754
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
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755 int nargin = args.length ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
756
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
757 if (nargin == 1)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
758 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
759 if (! symbol_table::at_top_level ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
760 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
761 Matrix ignored;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
762 octave_value tmp = symbol_table::varval (".ignored.");
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
763 if (tmp.is_defined ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
764 ignored = tmp.matrix_value ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
765
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
766 if (args(0).is_scalar_type ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
767 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
768 double k = args(0).double_value ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
769 if (! error_state)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
770 retval = val_in_table (ignored, k);
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
771 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
772 else if (args(0).is_numeric_type ())
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
773 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
774 const NDArray ka = args(0).array_value ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
775 if (! error_state)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
776 {
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
777 boolNDArray r (ka.dims ());
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
778 for (octave_idx_type i = 0; i < ka.numel (); i++)
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
779 r(i) = val_in_table (ignored, ka(i));
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
780
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
781 retval = r;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
782 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
783 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
784 else
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
785 gripe_wrong_type_arg ("is_ignored_output", args(0));
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
786 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
787 else
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
788 error ("is_ignored_output: invalid call at top level");
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
789 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
790 else
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
791 print_usage ();
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
792
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
793 return retval;
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
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794 }
1b2fcd122c6a allow user detect ignored outputs in m-functions
Jaroslav Hajek <highegg@gmail.com>
parents: 10637
diff changeset
795