Mercurial > hg > octave-nkf
annotate src/error.cc @ 12119:e320928eeb3a release-3-2-x release-3-2-4
version 3.2.4
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Fri, 22 Jan 2010 12:43:12 +0100 |
| parents | 38f3c198ba63 |
| children |
| rev | line source |
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| 1 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 8920 | 4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 John W. Eaton |
| 1 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1 | 21 |
| 22 */ | |
| 23 | |
| 240 | 24 #ifdef HAVE_CONFIG_H |
| 1192 | 25 #include <config.h> |
| 1 | 26 #endif |
| 27 | |
| 1343 | 28 #include <cstdarg> |
| 1633 | 29 #include <cstring> |
| 1343 | 30 |
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31 #include <iostream> |
| 5765 | 32 #include <sstream> |
| 1728 | 33 #include <string> |
| 34 | |
| 1352 | 35 #include "defun.h" |
| 1 | 36 #include "error.h" |
| 3707 | 37 #include "input.h" |
| 1742 | 38 #include "pager.h" |
| 1352 | 39 #include "oct-obj.h" |
| 5567 | 40 #include "oct-map.h" |
| 1352 | 41 #include "utils.h" |
| 2370 | 42 #include "ov.h" |
| 3707 | 43 #include "ov-usr-fcn.h" |
| 44 #include "pt-pr-code.h" | |
| 45 #include "pt-stmt.h" | |
| 46 #include "toplev.h" | |
| 47 #include "unwind-prot.h" | |
| 2370 | 48 #include "variables.h" |
| 1 | 49 |
| 2174 | 50 // TRUE means that Octave will try to beep obnoxiously before printing |
| 51 // error messages. | |
| 5794 | 52 static bool Vbeep_on_error = false; |
| 2174 | 53 |
| 3707 | 54 // TRUE means that Octave will try to enter the debugger when an error |
| 55 // is encountered. This will also inhibit printing of the normal | |
| 56 // traceback message (you will only see the top-level error message). | |
| 7353 | 57 bool Vdebug_on_error = false; |
| 3707 | 58 |
| 59 // TRUE means that Octave will try to enter the debugger when a warning | |
| 60 // is encountered. | |
| 7353 | 61 bool Vdebug_on_warning = false; |
| 3707 | 62 |
| 5567 | 63 // TRUE means that Octave will try to display a stack trace when a |
| 64 // warning is encountered. | |
| 65 static bool Vbacktrace_on_warning = false; | |
| 66 | |
| 67 // TRUE means that Octave will print a verbose warning. Currently unused. | |
| 68 static bool Vverbose_warning; | |
| 69 | |
| 5582 | 70 // TRUE means that Octave will print no warnings, but lastwarn will be |
| 71 //updated | |
| 72 static bool Vquiet_warning = false; | |
| 73 | |
| 5567 | 74 // A structure containing (most of) the current state of warnings. |
| 75 static Octave_map warning_options; | |
| 76 | |
| 3935 | 77 // The text of the last error message. |
| 78 static std::string Vlast_error_message; | |
| 79 | |
| 3934 | 80 // The text of the last warning message. |
| 81 static std::string Vlast_warning_message; | |
| 82 | |
| 5567 | 83 // The last warning message id. |
| 84 static std::string Vlast_warning_id; | |
| 3934 | 85 |
| 5567 | 86 // The last error message id. |
| 87 static std::string Vlast_error_id; | |
| 3934 | 88 |
| 6361 | 89 // The last file in which an error occured |
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90 static Octave_map Vlast_error_stack; |
| 6361 | 91 |
| 143 | 92 // Current error state. |
| 3935 | 93 // |
| 94 // Valid values: | |
| 95 // | |
| 96 // -2: an error has occurred, but don't print any messages. | |
| 97 // -1: an error has occurred, we are printing a traceback | |
| 98 // 0: no error | |
| 99 // 1: an error has occurred | |
| 100 // | |
| 672 | 101 int error_state = 0; |
| 102 | |
| 3489 | 103 // Current warning state. |
| 3935 | 104 // |
| 105 // Valid values: | |
| 106 // | |
| 107 // 0: no warning | |
| 108 // 1: a warning has occurred | |
| 109 // | |
| 3489 | 110 int warning_state = 0; |
| 111 | |
| 1489 | 112 // Tell the error handler whether to print messages, or just store |
| 113 // them for later. Used for handling errors in eval() and | |
| 114 // the `unwind_protect' statement. | |
| 4699 | 115 int buffer_error_messages = 0; |
| 1489 | 116 |
| 3815 | 117 // TRUE means error messages are turned off. |
| 118 bool discard_error_messages = false; | |
| 119 | |
| 4452 | 120 // TRUE means warning messages are turned off. |
| 121 bool discard_warning_messages = false; | |
| 122 | |
| 3811 | 123 // The message buffer. |
| 5765 | 124 static std::ostringstream *error_message_buffer = 0; |
| 143 | 125 |
| 4318 | 126 void |
| 127 reset_error_handler (void) | |
| 128 { | |
| 129 error_state = 0; | |
| 130 warning_state = 0; | |
| 4699 | 131 buffer_error_messages = 0; |
| 4318 | 132 discard_error_messages = false; |
| 133 } | |
| 134 | |
| 5567 | 135 static void |
| 5794 | 136 initialize_warning_options (const std::string& state) |
| 5567 | 137 { |
| 138 warning_options.clear (); | |
| 139 | |
| 140 warning_options.assign ("identifier", "all"); | |
| 141 warning_options.assign ("state", state); | |
| 142 } | |
| 143 | |
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144 static Octave_map |
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145 initialize_last_error_stack (void) |
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146 { |
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147 static bool initialized = false; |
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148 |
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149 static string_vector sv (4); |
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150 |
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151 if (! initialized) |
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152 { |
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153 sv[0] = "file"; |
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154 sv[1] = "name"; |
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155 sv[2] = "line"; |
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156 sv[3] = "column"; |
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157 |
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158 initialized = true; |
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159 } |
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160 |
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161 return Octave_map (dim_vector (0, 1), sv); |
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162 } |
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163 |
| 3491 | 164 // Warning messages are never buffered. |
| 165 | |
| 166 static void | |
| 5567 | 167 vwarning (const char *name, const char *id, const char *fmt, va_list args) |
| 3491 | 168 { |
| 4452 | 169 if (discard_warning_messages) |
| 170 return; | |
| 171 | |
| 3491 | 172 flush_octave_stdout (); |
| 173 | |
| 5765 | 174 std::ostringstream output_buf; |
| 3491 | 175 |
| 176 if (name) | |
| 3761 | 177 output_buf << name << ": "; |
| 178 | |
| 179 octave_vformat (output_buf, fmt, args); | |
| 180 | |
| 5765 | 181 output_buf << std::endl; |
| 3491 | 182 |
| 5775 | 183 // FIXME -- we really want to capture the message before it |
| 3935 | 184 // has all the formatting goop attached to it. We probably also |
| 185 // want just the message, not the traceback information. | |
| 186 | |
| 5765 | 187 std::string msg_string = output_buf.str (); |
| 3934 | 188 |
| 3935 | 189 if (! warning_state) |
| 190 { | |
| 191 // This is the first warning in a possible series. | |
| 5567 | 192 |
| 193 Vlast_warning_id = id; | |
| 3935 | 194 Vlast_warning_message = msg_string; |
| 195 } | |
| 3934 | 196 |
| 5582 | 197 if (! Vquiet_warning) |
| 198 { | |
| 199 octave_diary << msg_string; | |
| 3935 | 200 |
| 5582 | 201 std::cerr << msg_string; |
| 202 } | |
| 3491 | 203 } |
| 204 | |
| 1 | 205 static void |
| 4732 | 206 verror (bool save_last_error, std::ostream& os, |
| 5567 | 207 const char *name, const char *id, const char *fmt, va_list args) |
| 1 | 208 { |
| 3815 | 209 if (discard_error_messages) |
| 210 return; | |
| 211 | |
| 3585 | 212 if (! buffer_error_messages) |
| 213 flush_octave_stdout (); | |
| 914 | 214 |
| 5775 | 215 // FIXME -- we really want to capture the message before it |
| 3935 | 216 // has all the formatting goop attached to it. We probably also |
| 217 // want just the message, not the traceback information. | |
| 218 | |
| 7877 | 219 std::ostringstream output_buf; |
| 220 | |
| 221 octave_vformat (output_buf, fmt, args); | |
| 222 | |
| 223 std::string base_msg = output_buf.str (); | |
| 224 | |
| 225 bool to_beep_or_not_to_beep_p = Vbeep_on_error && ! error_state; | |
| 226 | |
| 227 std::string msg_string; | |
| 228 | |
| 229 if (to_beep_or_not_to_beep_p) | |
| 230 msg_string = "\a"; | |
| 231 | |
| 232 if (name) | |
| 233 msg_string += std::string (name) + ": "; | |
| 234 | |
| 7880 | 235 msg_string += base_msg + "\n"; |
| 3935 | 236 |
| 4731 | 237 if (! error_state && save_last_error) |
| 3935 | 238 { |
| 239 // This is the first error in a possible series. | |
| 5567 | 240 |
| 241 Vlast_error_id = id; | |
| 7877 | 242 Vlast_error_message = base_msg; |
| 6361 | 243 |
| 7877 | 244 octave_user_code *fcn = octave_call_stack::caller_user_code (); |
| 6361 | 245 |
| 7877 | 246 if (fcn) |
| 247 { | |
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248 octave_idx_type curr_frame = -1; |
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249 |
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250 Vlast_error_stack = octave_call_stack::backtrace (0, curr_frame); |
| 6361 | 251 } |
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252 else |
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253 Vlast_error_stack = initialize_last_error_stack (); |
| 3935 | 254 } |
| 255 | |
| 1489 | 256 if (buffer_error_messages) |
| 257 { | |
| 7882 | 258 if (error_message_buffer) |
| 259 msg_string = "error: " + msg_string; | |
| 260 else | |
| 7880 | 261 error_message_buffer = new std::ostringstream (); |
| 1489 | 262 |
| 7880 | 263 *error_message_buffer << msg_string; |
| 1489 | 264 } |
| 265 else | |
| 266 { | |
| 3935 | 267 octave_diary << msg_string; |
| 4732 | 268 os << msg_string; |
| 1489 | 269 } |
| 1 | 270 } |
| 271 | |
| 1266 | 272 // Note that we don't actually print any message if the error string |
| 273 // is just "" or "\n". This allows error ("") and error ("\n") to | |
| 274 // just set the error state. | |
| 275 | |
| 1005 | 276 static void |
| 5567 | 277 error_1 (std::ostream& os, const char *name, const char *id, |
| 278 const char *fmt, va_list args) | |
| 1005 | 279 { |
| 280 if (error_state != -2) | |
| 281 { | |
| 1489 | 282 if (fmt) |
| 1005 | 283 { |
| 1489 | 284 if (*fmt) |
| 1005 | 285 { |
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286 size_t len = strlen (fmt); |
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287 |
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288 if (len > 0) |
| 1266 | 289 { |
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290 if (fmt[len - 1] == '\n') |
| 1266 | 291 { |
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292 if (len > 1) |
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293 { |
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294 char *tmp_fmt = strsave (fmt); |
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295 tmp_fmt[len - 1] = '\0'; |
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296 verror (true, os, name, id, tmp_fmt, args); |
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297 delete [] tmp_fmt; |
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298 } |
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299 |
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300 error_state = -2; |
| 1489 | 301 } |
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302 else |
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303 { |
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304 verror (true, os, name, id, fmt, args); |
| 1423 | 305 |
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306 if (! error_state) |
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307 error_state = 1; |
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308 } |
| 1266 | 309 } |
| 1005 | 310 } |
| 311 } | |
| 1489 | 312 else |
| 313 panic ("error_1: invalid format"); | |
| 1005 | 314 } |
| 315 } | |
| 316 | |
| 1 | 317 void |
| 6338 | 318 vmessage (const char *name, const char *fmt, va_list args) |
| 319 { | |
| 320 verror (false, std::cerr, name, "", fmt, args); | |
| 321 } | |
| 322 | |
| 323 void | |
| 1 | 324 message (const char *name, const char *fmt, ...) |
| 325 { | |
| 326 va_list args; | |
| 327 va_start (args, fmt); | |
| 6338 | 328 vmessage (name, fmt, args); |
| 1 | 329 va_end (args); |
| 330 } | |
| 331 | |
| 332 void | |
| 6338 | 333 vmessage_with_id (const char *name, const char *id, const char *fmt, |
| 334 va_list args) | |
| 335 { | |
| 336 verror (false, std::cerr, name, id, fmt, args); | |
| 337 } | |
| 338 | |
| 339 void | |
| 5567 | 340 message_with_id (const char *name, const char *id, const char *fmt, ...) |
| 341 { | |
| 342 va_list args; | |
| 343 va_start (args, fmt); | |
| 6338 | 344 vmessage_with_id (name, id, fmt, args); |
| 5567 | 345 va_end (args); |
| 346 } | |
| 347 | |
| 348 void | |
| 349 usage_1 (const char *id, const char *fmt, va_list args) | |
| 350 { | |
| 351 verror (true, std::cerr, "usage", id, fmt, args); | |
| 352 error_state = -1; | |
| 353 } | |
| 354 | |
| 355 void | |
| 6338 | 356 vusage (const char *fmt, va_list args) |
| 357 { | |
| 358 usage_1 ("", fmt, args); | |
| 359 } | |
| 360 | |
| 361 void | |
| 1 | 362 usage (const char *fmt, ...) |
| 363 { | |
| 364 va_list args; | |
| 365 va_start (args, fmt); | |
| 6338 | 366 vusage (fmt, args); |
| 5567 | 367 va_end (args); |
| 368 } | |
| 369 | |
| 370 void | |
| 6338 | 371 vusage_with_id (const char *id, const char *fmt, va_list args) |
| 372 { | |
| 373 usage_1 (id, fmt, args); | |
| 374 } | |
| 375 | |
| 376 void | |
| 5567 | 377 usage_with_id (const char *id, const char *fmt, ...) |
| 378 { | |
| 379 va_list args; | |
| 380 va_start (args, fmt); | |
| 6338 | 381 vusage_with_id (id, fmt, args); |
| 1 | 382 va_end (args); |
| 383 } | |
| 384 | |
| 3707 | 385 static void |
| 3719 | 386 pr_where_2 (const char *fmt, va_list args) |
| 387 { | |
| 388 if (fmt) | |
| 389 { | |
| 390 if (*fmt) | |
| 391 { | |
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392 size_t len = strlen (fmt); |
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393 |
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394 if (len > 0) |
| 3719 | 395 { |
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396 if (fmt[len - 1] == '\n') |
| 3719 | 397 { |
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398 if (len > 1) |
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399 { |
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400 char *tmp_fmt = strsave (fmt); |
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401 tmp_fmt[len - 1] = '\0'; |
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402 verror (false, std::cerr, 0, "", tmp_fmt, args); |
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403 delete [] tmp_fmt; |
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404 } |
| 3719 | 405 } |
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406 else |
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407 verror (false, std::cerr, 0, "", fmt, args); |
| 3719 | 408 } |
| 409 } | |
| 410 } | |
| 411 else | |
| 412 panic ("pr_where_2: invalid format"); | |
| 413 } | |
| 414 | |
| 415 static void | |
| 3707 | 416 pr_where_1 (const char *fmt, ...) |
| 417 { | |
| 418 va_list args; | |
| 419 va_start (args, fmt); | |
| 3719 | 420 pr_where_2 (fmt, args); |
| 3707 | 421 va_end (args); |
| 422 } | |
| 423 | |
| 424 static void | |
| 8973 | 425 pr_where (const char *who) |
| 3707 | 426 { |
| 8973 | 427 octave_idx_type curr_frame = -1; |
| 3707 | 428 |
| 8973 | 429 Octave_map stk = octave_call_stack::backtrace (0, curr_frame); |
| 4976 | 430 |
| 8973 | 431 octave_idx_type nframes_to_display = stk.numel (); |
| 4976 | 432 |
| 8973 | 433 if (nframes_to_display > 0) |
| 434 { | |
| 435 pr_where_1 ("%s: called from\n", who); | |
| 3708 | 436 |
| 8973 | 437 Cell names = stk.contents ("name"); |
| 438 Cell lines = stk.contents ("line"); | |
| 439 Cell columns = stk.contents ("column"); | |
| 3707 | 440 |
| 8973 | 441 for (octave_idx_type i = 0; i < nframes_to_display; i++) |
| 4976 | 442 { |
| 8973 | 443 octave_value name = names(i); |
| 444 octave_value line = lines(i); | |
| 445 octave_value column = columns(i); | |
| 3707 | 446 |
| 8973 | 447 std::string nm = name.string_value (); |
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448 |
| 8973 | 449 pr_where_1 (" %s at line %d column %d\n", nm.c_str (), |
| 450 line.int_value (), column.int_value ()); | |
| 4719 | 451 } |
| 3707 | 452 } |
| 453 } | |
| 454 | |
| 6000 | 455 static void |
| 456 error_2 (const char *id, const char *fmt, va_list args) | |
| 457 { | |
| 458 int init_state = error_state; | |
| 459 | |
| 460 error_1 (std::cerr, "error", id, fmt, args); | |
| 461 | |
| 462 if ((interactive || forced_interactive) | |
| 463 && Vdebug_on_error && init_state == 0 | |
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464 && octave_call_stack::caller_user_code ()) |
| 6000 | 465 { |
| 466 unwind_protect_bool (Vdebug_on_error); | |
| 467 Vdebug_on_error = false; | |
| 468 | |
| 8973 | 469 error_state = 0; |
| 6000 | 470 |
| 8973 | 471 pr_where ("error"); |
| 6000 | 472 |
| 473 do_keyboard (octave_value_list ()); | |
| 474 | |
| 475 unwind_protect::run (); | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 void | |
| 6338 | 480 verror (const char *fmt, va_list args) |
| 481 { | |
| 482 error_2 ("", fmt, args); | |
| 483 } | |
| 484 | |
| 485 void | |
| 6000 | 486 error (const char *fmt, ...) |
| 487 { | |
| 488 va_list args; | |
| 489 va_start (args, fmt); | |
| 6338 | 490 verror (fmt, args); |
| 6000 | 491 va_end (args); |
| 492 } | |
| 493 | |
| 494 void | |
| 6338 | 495 verror_with_id (const char *id, const char *fmt, va_list args) |
| 496 { | |
| 497 error_2 (id, fmt, args); | |
| 498 } | |
| 499 | |
| 500 void | |
| 6000 | 501 error_with_id (const char *id, const char *fmt, ...) |
| 502 { | |
| 503 va_list args; | |
| 504 va_start (args, fmt); | |
| 6338 | 505 verror_with_id (id, fmt, args); |
| 6000 | 506 va_end (args); |
| 507 } | |
| 508 | |
| 5567 | 509 static int |
| 510 check_state (const std::string& state) | |
| 511 { | |
| 512 // -1: not found | |
| 513 // 0: found, "off" | |
| 514 // 1: found, "on" | |
| 515 // 2: found, "error" | |
| 516 | |
| 517 if (state == "off") | |
| 518 return 0; | |
| 519 else if (state == "on") | |
| 520 return 1; | |
| 521 else if (state == "error") | |
| 522 return 2; | |
| 523 else | |
| 524 return -1; | |
| 525 } | |
| 526 | |
| 527 // For given warning ID, return 0 if warnings are disabled, 1 if | |
| 528 // enabled, and 2 if this ID should be an error instead of a warning. | |
| 529 | |
| 5781 | 530 int |
| 5567 | 531 warning_enabled (const std::string& id) |
| 1 | 532 { |
| 5567 | 533 int retval = 0; |
| 534 | |
| 535 int all_state = -1; | |
| 536 int id_state = -1; | |
| 537 | |
| 538 octave_idx_type nel = warning_options.numel (); | |
| 539 | |
| 540 if (nel > 0) | |
| 541 { | |
| 542 Cell identifier = warning_options.contents ("identifier"); | |
| 543 Cell state = warning_options.contents ("state"); | |
| 544 | |
| 545 bool all_found = false; | |
| 546 bool id_found = false; | |
| 547 | |
| 548 for (octave_idx_type i = 0; i < nel; i++) | |
| 549 { | |
| 550 octave_value ov = identifier(i); | |
| 551 std::string ovs = ov.string_value (); | |
| 552 | |
| 553 if (! all_found && ovs == "all") | |
| 554 { | |
| 555 all_state = check_state (state(i).string_value ()); | |
| 556 | |
| 557 if (all_state >= 0) | |
| 558 all_found = true; | |
| 559 } | |
| 560 | |
| 561 if (! id_found && ovs == id) | |
| 562 { | |
| 563 id_state = check_state (state(i).string_value ()); | |
| 564 | |
| 565 if (id_state >= 0) | |
| 566 id_found = true; | |
| 567 } | |
| 568 | |
| 569 if (all_found && id_found) | |
| 570 break; | |
| 571 } | |
| 572 } | |
| 573 | |
| 574 if (all_state == -1) | |
| 575 panic_impossible (); | |
| 576 | |
| 577 if (all_state == 0) | |
| 578 { | |
| 579 if (id_state >= 0) | |
| 580 retval = id_state; | |
| 581 } | |
| 582 else if (all_state == 1) | |
| 583 { | |
| 584 if (id_state == 0 || id_state == 2) | |
| 585 retval = id_state; | |
| 586 else | |
| 587 retval = all_state; | |
| 588 } | |
| 589 else if (all_state == 2) | |
| 7206 | 590 { |
| 591 if (id_state == 0) | |
| 592 retval= id_state; | |
| 593 else | |
| 594 retval = all_state; | |
| 595 } | |
| 5567 | 596 |
| 597 return retval; | |
| 598 } | |
| 599 | |
| 600 static void | |
| 601 warning_1 (const char *id, const char *fmt, va_list args) | |
| 602 { | |
| 603 int warn_opt = warning_enabled (id); | |
| 604 | |
| 605 if (warn_opt == 2) | |
| 606 { | |
| 607 // Handle this warning as an error. | |
| 608 | |
| 5998 | 609 error_2 (id, fmt, args); |
| 5567 | 610 } |
| 611 else if (warn_opt == 1) | |
| 3934 | 612 { |
| 8973 | 613 vwarning ("warning", id, fmt, args); |
| 614 | |
| 615 if (! symbol_table::at_top_level () | |
| 5567 | 616 && Vbacktrace_on_warning |
| 4452 | 617 && ! warning_state |
| 618 && ! discard_warning_messages) | |
| 8973 | 619 pr_where ("warning"); |
| 3707 | 620 |
| 3935 | 621 warning_state = 1; |
| 622 | |
| 3934 | 623 if ((interactive || forced_interactive) |
| 5743 | 624 && Vdebug_on_warning |
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625 && octave_call_stack::caller_user_code ()) |
| 3934 | 626 { |
| 627 unwind_protect_bool (Vdebug_on_warning); | |
| 628 Vdebug_on_warning = false; | |
| 3707 | 629 |
| 3934 | 630 do_keyboard (octave_value_list ()); |
| 3707 | 631 |
| 3934 | 632 unwind_protect::run (); |
| 633 } | |
| 3707 | 634 } |
| 1 | 635 } |
| 636 | |
| 637 void | |
| 6338 | 638 vwarning (const char *fmt, va_list args) |
| 639 { | |
| 640 warning_1 ("", fmt, args); | |
| 641 } | |
| 642 | |
| 643 void | |
| 5567 | 644 warning (const char *fmt, ...) |
| 645 { | |
| 646 va_list args; | |
| 647 va_start (args, fmt); | |
| 6338 | 648 vwarning (fmt, args); |
| 5567 | 649 va_end (args); |
| 650 } | |
| 651 | |
| 652 void | |
| 6338 | 653 vwarning_with_id (const char *id, const char *fmt, va_list args) |
| 654 { | |
| 655 warning_1 (id, fmt, args); | |
| 656 } | |
| 657 | |
| 658 void | |
| 5567 | 659 warning_with_id (const char *id, const char *fmt, ...) |
| 660 { | |
| 661 va_list args; | |
| 662 va_start (args, fmt); | |
| 6338 | 663 vwarning_with_id (id, fmt, args); |
| 5567 | 664 va_end (args); |
| 665 } | |
| 666 | |
| 667 void | |
| 6338 | 668 vparse_error (const char *fmt, va_list args) |
| 669 { | |
| 670 error_1 (std::cerr, 0, "", fmt, args); | |
| 671 } | |
| 672 | |
| 673 void | |
| 1005 | 674 parse_error (const char *fmt, ...) |
| 675 { | |
| 676 va_list args; | |
| 677 va_start (args, fmt); | |
| 6338 | 678 vparse_error (fmt, args); |
| 5567 | 679 va_end (args); |
| 680 } | |
| 681 | |
| 682 void | |
| 6338 | 683 vparse_error_with_id (const char *id, const char *fmt, va_list args) |
| 684 { | |
| 685 error_1 (std::cerr, 0, id, fmt, args); | |
| 686 } | |
| 687 | |
| 688 void | |
| 5567 | 689 parse_error_with_id (const char *id, const char *fmt, ...) |
| 690 { | |
| 691 va_list args; | |
| 692 va_start (args, fmt); | |
| 6338 | 693 vparse_error_with_id (id, fmt, args); |
| 1 | 694 va_end (args); |
| 695 } | |
| 696 | |
| 189 | 697 void |
| 6361 | 698 rethrow_error (const char *id, const char *fmt, ...) |
| 699 { | |
| 700 va_list args; | |
| 701 va_start (args, fmt); | |
| 6640 | 702 error_1 (std::cerr, 0, id, fmt, args); |
| 6361 | 703 va_end (args); |
| 704 } | |
| 705 | |
| 706 void | |
| 1 | 707 panic (const char *fmt, ...) |
| 708 { | |
| 709 va_list args; | |
| 710 va_start (args, fmt); | |
| 4699 | 711 buffer_error_messages = 0; |
| 3815 | 712 discard_error_messages = false; |
| 5567 | 713 verror (false, std::cerr, "panic", "", fmt, args); |
| 1 | 714 va_end (args); |
| 715 abort (); | |
| 716 } | |
| 717 | |
| 4732 | 718 static void |
| 719 defun_usage_message_1 (const char *fmt, ...) | |
| 720 { | |
| 721 va_list args; | |
| 722 va_start (args, fmt); | |
| 5567 | 723 error_1 (octave_stdout, 0, "", fmt, args); |
| 4732 | 724 va_end (args); |
| 725 } | |
| 726 | |
| 727 void | |
| 728 defun_usage_message (const std::string& msg) | |
| 729 { | |
| 730 defun_usage_message_1 ("%s", msg.c_str ()); | |
| 731 } | |
| 732 | |
| 5567 | 733 typedef void (*error_fun)(const char *, const char *, ...); |
| 1489 | 734 |
| 2086 | 735 extern octave_value_list Fsprintf (const octave_value_list&, int); |
| 1489 | 736 |
| 3934 | 737 static std::string |
| 5567 | 738 handle_message (error_fun f, const char *id, const char *msg, |
| 739 const octave_value_list& args) | |
| 528 | 740 { |
| 3934 | 741 std::string retval; |
| 528 | 742 |
| 3523 | 743 std::string tstr; |
| 1728 | 744 |
| 528 | 745 int nargin = args.length (); |
| 746 | |
| 2745 | 747 if (nargin > 0) |
| 528 | 748 { |
| 3066 | 749 octave_value arg; |
| 750 | |
| 751 if (nargin > 1) | |
| 752 { | |
| 753 octave_value_list tmp = Fsprintf (args, 1); | |
| 754 arg = tmp(0); | |
| 755 } | |
| 756 else | |
| 757 arg = args(0); | |
| 2745 | 758 |
| 759 if (arg.is_defined ()) | |
| 528 | 760 { |
| 2745 | 761 if (arg.is_string ()) |
| 762 { | |
| 763 tstr = arg.string_value (); | |
| 764 msg = tstr.c_str (); | |
| 765 | |
| 766 if (! msg) | |
| 767 return retval; | |
| 768 } | |
| 769 else if (arg.is_empty ()) | |
| 528 | 770 return retval; |
| 771 } | |
| 772 } | |
| 773 | |
| 1489 | 774 // Ugh. |
| 775 | |
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776 size_t len = strlen (msg); |
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777 |
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778 if (len > 0) |
| 1489 | 779 { |
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780 if (msg[len - 1] == '\n') |
| 1489 | 781 { |
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782 if (len > 1) |
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783 { |
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784 char *tmp_msg = strsave (msg); |
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785 tmp_msg[len - 1] = '\0'; |
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786 f (id, "%s\n", tmp_msg); |
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787 retval = tmp_msg; |
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788 delete [] tmp_msg; |
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789 } |
| 1489 | 790 } |
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791 else |
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792 { |
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793 f (id, "%s", msg); |
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794 retval = msg; |
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795 } |
| 3934 | 796 } |
| 528 | 797 |
| 798 return retval; | |
| 799 } | |
| 800 | |
| 6361 | 801 DEFUN (rethrow, args, , |
| 802 "-*- texinfo -*-\n\ | |
| 803 @deftypefn {Built-in Function} {} rethrow (@var{err})\n\ | |
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804 Reissues a previous error as defined by @var{err}. @var{err} is a structure\n\ |
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805 that must contain at least the 'message' and 'identifier' fields. @var{err}\n\ |
| 6361 | 806 can also contain a field 'stack' that gives information on the assumed\n\ |
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807 location of the error. Typically @var{err} is returned from\n\ |
| 6361 | 808 @code{lasterror}.\n\ |
| 809 @seealso{lasterror, lasterr, error}\n\ | |
| 810 @end deftypefn") | |
| 811 { | |
| 812 octave_value retval; | |
| 813 int nargin = args.length(); | |
| 814 | |
| 815 if (nargin != 1) | |
| 6959 | 816 print_usage (); |
| 6361 | 817 else |
| 818 { | |
| 6483 | 819 Octave_map err = args(0).map_value (); |
| 6361 | 820 |
| 6483 | 821 if (! error_state) |
| 6361 | 822 { |
| 6483 | 823 if (err.contains ("message") && err.contains ("identifier")) |
| 6361 | 824 { |
| 6483 | 825 std::string msg = err.contents("message")(0).string_value (); |
| 826 std::string id = err.contents("identifier")(0).string_value (); | |
| 6361 | 827 int len = msg.length(); |
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828 |
| 6361 | 829 std::string file; |
| 830 std::string nm; | |
| 831 int l = -1; | |
| 832 int c = -1; | |
| 833 | |
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834 Octave_map err_stack = initialize_last_error_stack (); |
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835 |
| 6483 | 836 if (err.contains ("stack")) |
| 6361 | 837 { |
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838 err_stack = err.contents("stack")(0).map_value (); |
| 6483 | 839 |
| 6640 | 840 if (err_stack.numel () > 0) |
| 841 { | |
| 842 if (err_stack.contains ("file")) | |
| 843 file = err_stack.contents("file")(0).string_value (); | |
| 6483 | 844 |
| 6640 | 845 if (err_stack.contains ("name")) |
| 846 nm = err_stack.contents("name")(0).string_value (); | |
| 6483 | 847 |
| 6640 | 848 if (err_stack.contains ("line")) |
| 849 l = err_stack.contents("line")(0).nint_value (); | |
| 850 | |
| 851 if (err_stack.contains ("column")) | |
| 852 c = err_stack.contents("column")(0).nint_value (); | |
| 853 } | |
| 6361 | 854 } |
| 855 | |
| 856 // Ugh. | |
| 6483 | 857 char *tmp_msg = strsave (msg.c_str ()); |
| 6361 | 858 if (tmp_msg[len-1] == '\n') |
| 859 { | |
| 860 if (len > 1) | |
| 861 { | |
| 862 tmp_msg[len - 1] = '\0'; | |
| 6483 | 863 rethrow_error (id.c_str (), "%s\n", tmp_msg); |
| 6361 | 864 } |
| 865 } | |
| 866 else | |
| 6483 | 867 rethrow_error (id.c_str (), "%s", tmp_msg); |
| 6361 | 868 delete [] tmp_msg; |
| 869 | |
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870 // FIXME -- is this the right thing to do for |
|
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871 // Vlast_error_stack? Should it be saved and restored |
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872 // with unwind_protect? |
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873 |
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874 Vlast_error_stack = err_stack; |
| 6361 | 875 |
| 6483 | 876 if (err.contains ("stack")) |
| 6361 | 877 { |
| 878 if (file.empty ()) | |
| 879 { | |
| 880 if (nm.empty ()) | |
| 881 { | |
| 882 if (l > 0) | |
| 6483 | 883 { |
| 884 if (c > 0) | |
| 885 pr_where_1 ("error: near line %d, column %d", | |
| 886 l, c); | |
| 887 else | |
| 888 pr_where_1 ("error: near line %d", l); | |
| 889 } | |
| 6361 | 890 } |
| 891 else | |
| 892 { | |
| 893 if (l > 0) | |
| 6483 | 894 { |
| 895 if (c > 0) | |
| 896 pr_where_1 ("error: called from `%s' near line %d, column %d", | |
| 897 nm.c_str (), l, c); | |
| 898 else | |
| 899 pr_where_1 ("error: called from `%d' near line %d", nm.c_str (), l); | |
| 900 } | |
| 6361 | 901 } |
| 902 } | |
| 903 else | |
| 904 { | |
| 905 if (nm.empty ()) | |
| 906 { | |
| 907 if (l > 0) | |
| 6483 | 908 { |
| 909 if (c > 0) | |
| 910 pr_where_1 ("error: in file %s near line %d, column %d", | |
| 911 file.c_str (), l, c); | |
| 912 else | |
| 913 pr_where_1 ("error: in file %s near line %d", file.c_str (), l); | |
| 914 } | |
| 6361 | 915 } |
| 916 else | |
| 917 { | |
| 918 if (l > 0) | |
| 6483 | 919 { |
| 920 if (c > 0) | |
| 921 pr_where_1 ("error: called from `%s' in file %s near line %d, column %d", | |
| 922 nm.c_str (), file.c_str (), l, c); | |
| 923 else | |
| 924 pr_where_1 ("error: called from `%d' in file %s near line %d", nm.c_str (), file.c_str (), l); | |
| 925 } | |
| 6361 | 926 } |
| 927 } | |
| 928 } | |
| 929 } | |
| 930 else | |
| 931 error ("rethrow: structure must contain the fields 'message and 'identifier'"); | |
| 932 } | |
| 933 } | |
| 934 return retval; | |
| 935 } | |
| 936 | |
| 1957 | 937 DEFUN (error, args, , |
| 3373 | 938 "-*- texinfo -*-\n\ |
| 939 @deftypefn {Built-in Function} {} error (@var{template}, @dots{})\n\ | |
| 7252 | 940 @deftypefnx {Built-in Function} {} error (@var{id}, @var{template}, @dots{})\n\ |
| 5781 | 941 Format the optional arguments under the control of the template string\n\ |
| 942 @var{template} using the same rules as the @code{printf} family of\n\ | |
| 943 functions (@pxref{Formatted Output}) and print the resulting message\n\ | |
| 944 on the @code{stderr} stream. The message is prefixed by the character\n\ | |
| 945 string @samp{error: }.\n\ | |
| 3373 | 946 \n\ |
| 947 Calling @code{error} also sets Octave's internal error state such that\n\ | |
| 948 control will return to the top level without evaluating any more\n\ | |
| 949 commands. This is useful for aborting from functions or scripts.\n\ | |
| 897 | 950 \n\ |
| 3373 | 951 If the error message does not end with a new line character, Octave will\n\ |
| 952 print a traceback of all the function calls leading to the error. For\n\ | |
| 953 example, given the following function definitions:\n\ | |
| 954 \n\ | |
| 955 @example\n\ | |
| 956 @group\n\ | |
| 6671 | 957 function f () g (); end\n\ |
| 958 function g () h (); end\n\ | |
| 3373 | 959 function h () nargin == 1 || error (\"nargin != 1\"); end\n\ |
| 960 @end group\n\ | |
| 961 @end example\n\ | |
| 1489 | 962 \n\ |
| 3373 | 963 @noindent\n\ |
| 964 calling the function @code{f} will result in a list of messages that\n\ | |
| 965 can help you to quickly locate the exact location of the error:\n\ | |
| 1489 | 966 \n\ |
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967 @example\n\ |
| 3373 | 968 @group\n\ |
| 969 f ()\n\ | |
| 970 error: nargin != 1\n\ | |
|
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971 error: called from:\n\ |
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972 error: error at line -1, column -1\n\ |
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973 error: h at line 1, column 27\n\ |
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974 error: g at line 1, column 15\n\ |
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975 error: f at line 1, column 15\n\ |
| 3373 | 976 @end group\n\ |
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977 @end example\n\ |
| 3373 | 978 \n\ |
| 979 If the error message ends in a new line character, Octave will print the\n\ | |
| 980 message but will not display any traceback messages as it returns\n\ | |
| 981 control to the top level. For example, modifying the error message\n\ | |
| 982 in the previous example to end in a new line causes Octave to only print\n\ | |
| 983 a single message:\n\ | |
| 984 \n\ | |
| 985 @example\n\ | |
| 986 @group\n\ | |
| 987 function h () nargin == 1 || error (\"nargin != 1\\n\"); end\n\ | |
| 988 f ()\n\ | |
| 989 error: nargin != 1\n\ | |
| 990 @end group\n\ | |
| 991 @end example\n\ | |
| 992 @end deftypefn") | |
| 897 | 993 { |
| 7252 | 994 octave_value retval; |
| 995 | |
| 996 int nargin = args.length (); | |
| 997 | |
| 998 octave_value_list nargs = args; | |
| 999 | |
| 1000 std::string id; | |
| 1001 | |
|
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1002 if (nargin == 0) |
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1003 print_usage (); |
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1004 else |
| 7252 | 1005 { |
|
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1006 if (nargin > 1) |
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1007 { |
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1008 std::string arg1 = args(0).string_value (); |
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1009 |
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1010 if (! error_state) |
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1011 { |
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1012 if (arg1.find ('%') == std::string::npos) |
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1013 { |
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1014 id = arg1; |
| 5567 | 1015 |
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1016 nargs.resize (nargin-1); |
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1017 |
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1018 for (int i = 1; i < nargin; i++) |
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1019 nargs(i-1) = args(i); |
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1020 } |
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1021 } |
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1022 else |
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1023 return retval; |
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1024 } |
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1025 else if (nargin == 1 && args(0).is_map ()) |
| 7252 | 1026 { |
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1027 octave_value_list tmp; |
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1028 |
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1029 Octave_map m = args(0).map_value (); |
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1030 |
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1031 if (m.numel () == 1) |
| 7252 | 1032 { |
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1033 if (m.contains ("message")) |
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1034 { |
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1035 Cell c = m.contents ("message"); |
| 7252 | 1036 |
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1037 if (! c.is_empty () && c(0).is_string ()) |
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1038 nargs(0) = c(0).string_value (); |
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1039 } |
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1040 |
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1041 if (m.contains ("identifier")) |
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1042 { |
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1043 Cell c = m.contents ("identifier"); |
| 7252 | 1044 |
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1045 if (! c.is_empty () && c(0).is_string ()) |
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1046 id = c(0).string_value (); |
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1047 } |
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1048 |
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1049 // FIXME -- also need to handle "stack" field in error |
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1050 // structure, but that will require some more significant |
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1051 // surgery on handle_message, error_with_id, etc. |
| 7252 | 1052 } |
| 1053 } | |
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1054 |
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1055 handle_message (error_with_id, id.c_str (), "unspecified error", nargs); |
| 7252 | 1056 } |
| 1057 | |
| 3934 | 1058 return retval; |
| 1489 | 1059 } |
| 897 | 1060 |
|
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1061 DEFUN (warning, args, nargout, |
| 3373 | 1062 "-*- texinfo -*-\n\ |
| 5781 | 1063 @deftypefn {Built-in Function} {} warning (@var{template}, @dots{})\n\ |
| 7252 | 1064 @deftypefnx {Built-in Function} {} warning (@var{id}, @var{template}, @dots{})\n\ |
| 5781 | 1065 Format the optional arguments under the control of the template string\n\ |
| 1066 @var{template} using the same rules as the @code{printf} family of\n\ | |
| 1067 functions (@pxref{Formatted Output}) and print the resulting message\n\ | |
| 1068 on the @code{stderr} stream. The message is prefixed by the character\n\ | |
| 1069 string @samp{warning: }.\n\ | |
| 1070 You should use this function when you want to notify the user\n\ | |
| 3600 | 1071 of an unusual condition, but only when it makes sense for your program\n\ |
| 1072 to go on.\n\ | |
| 5781 | 1073 \n\ |
| 1074 The optional message identifier allows users to enable or disable\n\ | |
| 1075 warnings tagged by @var{id}. The special identifier @samp{\"all\"} may\n\ | |
| 1076 be used to set the state of all warnings.\n\ | |
| 1077 \n\ | |
| 1078 @deftypefnx {Built-in Function} {} warning (\"on\", @var{id})\n\ | |
| 1079 @deftypefnx {Built-in Function} {} warning (\"off\", @var{id})\n\ | |
| 1080 @deftypefnx {Built-in Function} {} warning (\"error\", @var{id})\n\ | |
| 1081 @deftypefnx {Built-in Function} {} warning (\"query\", @var{id})\n\ | |
| 6653 | 1082 Set or query the state of a particular warning using the identifier\n\ |
| 5781 | 1083 @var{id}. If the identifier is omitted, a value of @samp{\"all\"} is\n\ |
| 1084 assumed. If you set the state of a warning to @samp{\"error\"}, the\n\ | |
| 1085 warning named by @var{id} is handled as if it were an error instead.\n\ | |
| 5783 | 1086 @seealso{warning_ids}\n\ |
| 3373 | 1087 @end deftypefn") |
| 1489 | 1088 { |
| 5567 | 1089 octave_value retval; |
| 3934 | 1090 |
| 5567 | 1091 int nargin = args.length (); |
| 1092 int argc = nargin + 1; | |
| 3934 | 1093 |
| 3935 | 1094 bool done = false; |
| 3934 | 1095 |
| 5567 | 1096 if (argc > 1 && args.all_strings_p ()) |
| 3935 | 1097 { |
| 1098 string_vector argv = args.make_argv ("warning"); | |
| 1099 | |
| 1100 if (! error_state) | |
| 3934 | 1101 { |
| 5567 | 1102 std::string arg1 = argv(1); |
| 1103 std::string arg2 = "all"; | |
| 1104 | |
| 1105 if (argc == 3) | |
| 1106 arg2 = argv(2); | |
| 1107 | |
| 1108 if (arg1 == "on" || arg1 == "off" || arg1 == "error") | |
| 3934 | 1109 { |
| 5567 | 1110 Octave_map old_warning_options = warning_options; |
| 1111 | |
| 1112 if (arg2 == "all") | |
| 1113 { | |
| 1114 Octave_map tmp; | |
| 3934 | 1115 |
| 7202 | 1116 Cell id (1, 1); |
| 1117 Cell st (1, 1); | |
| 1118 | |
| 1119 id(0) = arg2; | |
| 1120 st(0) = arg1; | |
| 1121 | |
| 1122 // Since internal Octave functions are not | |
| 1123 // compatible, turning all warnings into errors | |
| 1124 // should leave the state of | |
| 1125 // Octave:matlab-incompatible alone. | |
| 1126 | |
| 1127 if (arg1 == "error" | |
| 1128 && warning_options.contains ("identifier")) | |
| 1129 { | |
| 7206 | 1130 octave_idx_type n = 1; |
| 1131 | |
| 7202 | 1132 Cell tid = warning_options.contents ("identifier"); |
| 1133 Cell tst = warning_options.contents ("state"); | |
| 1134 | |
| 1135 for (octave_idx_type i = 0; i < tid.numel (); i++) | |
| 1136 { | |
| 1137 octave_value vid = tid(i); | |
| 1138 | |
| 7206 | 1139 if (vid.is_string ()) |
| 7202 | 1140 { |
| 7206 | 1141 std::string key = vid.string_value (); |
| 7202 | 1142 |
| 7206 | 1143 if (key == "Octave:matlab-incompatible" |
| 1144 || key == "Octave:single-quote-string") | |
| 1145 { | |
| 1146 id.resize (dim_vector (1, n+1)); | |
| 1147 st.resize (dim_vector (1, n+1)); | |
| 7202 | 1148 |
| 7206 | 1149 id(n) = tid(i); |
| 1150 st(n) = tst(i); | |
| 1151 | |
| 1152 n++; | |
| 1153 } | |
| 7202 | 1154 } |
| 1155 } | |
| 1156 } | |
| 1157 | |
| 1158 tmp.assign ("identifier", id); | |
| 1159 tmp.assign ("state", st); | |
| 5567 | 1160 |
| 1161 warning_options = tmp; | |
| 1162 | |
| 3935 | 1163 done = true; |
| 1164 } | |
| 5567 | 1165 else if (arg2 == "backtrace") |
| 1166 { | |
| 1167 if (arg1 != "error") | |
| 1168 { | |
| 1169 Vbacktrace_on_warning = (arg1 == "on"); | |
| 1170 done = true; | |
| 1171 } | |
| 1172 } | |
| 1173 else if (arg2 == "debug") | |
| 1174 { | |
| 1175 if (arg1 != "error") | |
| 1176 { | |
| 5794 | 1177 Vdebug_on_warning = (arg1 == "on"); |
| 5567 | 1178 done = true; |
| 1179 } | |
| 1180 } | |
| 1181 else if (arg2 == "verbose") | |
| 1182 { | |
| 1183 if (arg1 != "error") | |
| 1184 { | |
| 1185 Vverbose_warning = (arg1 == "on"); | |
| 1186 done = true; | |
| 1187 } | |
| 1188 } | |
| 5582 | 1189 else if (arg2 == "quiet") |
| 1190 { | |
| 1191 if (arg1 != "error") | |
| 1192 { | |
| 1193 Vquiet_warning = (arg1 == "on"); | |
| 1194 done = true; | |
| 1195 } | |
| 1196 } | |
| 5567 | 1197 else |
| 3935 | 1198 { |
| 5567 | 1199 if (arg2 == "last") |
| 1200 arg2 = Vlast_warning_id; | |
| 1201 | |
| 1202 if (arg2 == "all") | |
| 5794 | 1203 initialize_warning_options (arg1); |
| 5567 | 1204 else |
| 1205 { | |
| 1206 Cell ident = warning_options.contents ("identifier"); | |
| 1207 Cell state = warning_options.contents ("state"); | |
| 1208 | |
| 1209 octave_idx_type nel = ident.numel (); | |
| 1210 | |
| 1211 bool found = false; | |
| 1212 | |
| 1213 for (octave_idx_type i = 0; i < nel; i++) | |
| 1214 { | |
| 1215 if (ident(i).string_value () == arg2) | |
| 1216 { | |
| 5775 | 1217 // FIXME -- if state for "all" is |
| 5567 | 1218 // same as arg1, we can simply remove the |
| 1219 // item from the list. | |
| 1220 | |
| 1221 state(i) = arg1; | |
| 1222 warning_options.assign ("state", state); | |
| 1223 found = true; | |
| 1224 break; | |
| 1225 } | |
| 1226 } | |
| 1227 | |
| 1228 if (! found) | |
| 1229 { | |
| 5775 | 1230 // FIXME -- if state for "all" is |
| 5567 | 1231 // same as arg1, we don't need to do anything. |
| 1232 | |
| 1233 ident.resize (dim_vector (1, nel+1)); | |
| 1234 state.resize (dim_vector (1, nel+1)); | |
| 1235 | |
| 1236 ident(nel) = arg2; | |
| 1237 state(nel) = arg1; | |
| 1238 | |
| 1239 warning_options.clear (); | |
| 1240 | |
| 1241 warning_options.assign ("identifier", ident); | |
| 1242 warning_options.assign ("state", state); | |
| 1243 } | |
| 1244 } | |
| 1245 | |
| 3935 | 1246 done = true; |
| 1247 } | |
| 5567 | 1248 |
| 1249 if (done && nargout > 0) | |
| 6427 | 1250 retval = old_warning_options; |
| 5567 | 1251 } |
| 1252 else if (arg1 == "query") | |
| 1253 { | |
| 1254 if (arg2 == "all") | |
| 1255 retval = warning_options; | |
| 1256 else if (arg2 == "backtrace" || arg2 == "debug" | |
| 5582 | 1257 || arg2 == "verbose" || arg2 == "quiet") |
| 5567 | 1258 { |
| 1259 Octave_map tmp; | |
| 1260 tmp.assign ("identifier", arg2); | |
| 1261 if (arg2 == "backtrace") | |
| 1262 tmp.assign ("state", Vbacktrace_on_warning ? "on" : "off"); | |
| 1263 else if (arg2 == "debug") | |
| 1264 tmp.assign ("state", Vdebug_on_warning ? "on" : "off"); | |
| 5582 | 1265 else if (arg2 == "verbose") |
| 1266 tmp.assign ("state", Vverbose_warning ? "on" : "off"); | |
| 5567 | 1267 else |
| 5582 | 1268 tmp.assign ("state", Vquiet_warning ? "on" : "off"); |
| 1269 | |
| 1270 retval = tmp; | |
| 5567 | 1271 } |
| 1272 else | |
| 3935 | 1273 { |
| 5567 | 1274 if (arg2 == "last") |
| 1275 arg2 = Vlast_warning_id; | |
| 1276 | |
| 1277 Cell ident = warning_options.contents ("identifier"); | |
| 1278 Cell state = warning_options.contents ("state"); | |
| 1279 | |
| 1280 octave_idx_type nel = ident.numel (); | |
| 1281 | |
| 1282 bool found = false; | |
| 1283 | |
| 1284 std::string val; | |
| 1285 | |
| 1286 for (octave_idx_type i = 0; i < nel; i++) | |
| 1287 { | |
| 1288 if (ident(i).string_value () == arg2) | |
| 1289 { | |
| 1290 val = state(i).string_value (); | |
| 1291 found = true; | |
| 1292 break; | |
| 1293 } | |
| 1294 } | |
| 1295 | |
| 5781 | 1296 if (! found) |
| 1297 { | |
| 1298 for (octave_idx_type i = 0; i < nel; i++) | |
| 1299 { | |
| 1300 if (ident(i).string_value () == "all") | |
| 1301 { | |
| 1302 val = state(i).string_value (); | |
| 1303 found = true; | |
| 1304 break; | |
| 1305 } | |
| 1306 } | |
| 1307 } | |
| 1308 | |
| 5567 | 1309 if (found) |
| 1310 { | |
| 1311 Octave_map tmp; | |
| 1312 | |
| 1313 tmp.assign ("identifier", arg2); | |
| 1314 tmp.assign ("state", val); | |
| 1315 | |
| 1316 retval = tmp; | |
| 1317 } | |
| 1318 else | |
| 5781 | 1319 error ("warning: unable to find default warning state!"); |
| 3935 | 1320 } |
| 5567 | 1321 |
| 1322 done = true; | |
| 3935 | 1323 } |
| 3934 | 1324 } |
| 1325 } | |
| 5567 | 1326 else if (argc == 1) |
| 1327 { | |
| 1328 retval = warning_options; | |
| 3934 | 1329 |
| 5567 | 1330 done = true; |
| 1331 } | |
| 1332 else if (argc == 2) | |
| 1333 { | |
| 1334 octave_value arg = args(0); | |
| 1335 | |
| 1336 Octave_map old_warning_options = warning_options; | |
| 1337 | |
| 1338 if (arg.is_map ()) | |
| 1339 { | |
| 1340 Octave_map m = arg.map_value (); | |
| 1341 | |
| 1342 if (m.contains ("identifier") && m.contains ("state")) | |
| 6427 | 1343 warning_options = m; |
| 5567 | 1344 else |
| 1345 error ("warning: expecting structure with fields `identifier' and `state'"); | |
| 1346 | |
| 1347 done = true; | |
| 1348 | |
| 1349 if (nargout > 0) | |
| 1350 retval = old_warning_options; | |
| 1351 } | |
| 1352 } | |
| 1353 | |
| 1354 if (! (error_state || done)) | |
| 3935 | 1355 { |
| 5567 | 1356 octave_value_list nargs = args; |
| 1357 | |
| 1358 std::string id; | |
| 1359 | |
| 1360 if (nargin > 1) | |
| 1361 { | |
| 1362 std::string arg1 = args(0).string_value (); | |
| 1363 | |
| 1364 if (! error_state) | |
| 1365 { | |
| 8021 | 1366 if (arg1.find ('%') == std::string::npos) |
| 5567 | 1367 { |
| 1368 id = arg1; | |
| 1369 | |
| 1370 nargs.resize (nargin-1); | |
| 1371 | |
| 1372 for (int i = 1; i < nargin; i++) | |
| 1373 nargs(i-1) = args(i); | |
| 1374 } | |
| 1375 } | |
| 1376 else | |
| 1377 return retval; | |
| 1378 } | |
| 1379 | |
| 3935 | 1380 std::string prev_msg = Vlast_warning_message; |
| 1381 | |
| 5567 | 1382 std::string curr_msg = handle_message (warning_with_id, id.c_str (), |
| 1383 "unspecified warning", nargs); | |
| 3935 | 1384 |
| 1385 if (nargout > 0) | |
| 5567 | 1386 retval = prev_msg; |
| 3935 | 1387 } |
| 1388 | |
| 3934 | 1389 return retval; |
| 1390 } | |
| 1391 | |
| 5904 | 1392 void |
| 5794 | 1393 disable_warning (const std::string& id) |
| 1394 { | |
| 1395 octave_value_list args; | |
| 1396 | |
| 1397 args(1) = id; | |
| 1398 args(0) = "off"; | |
| 1399 | |
| 1400 Fwarning (args, 0); | |
| 1401 } | |
| 1402 | |
| 1403 void | |
| 1404 initialize_default_warning_state (void) | |
| 1405 { | |
| 1406 initialize_warning_options ("on"); | |
| 1407 | |
| 1408 // Most people will want to have the following disabled. | |
| 1409 | |
| 1410 disable_warning ("Octave:array-to-scalar"); | |
| 1411 disable_warning ("Octave:array-to-vector"); | |
| 1412 disable_warning ("Octave:empty-list-elements"); | |
| 1413 disable_warning ("Octave:fortran-indexing"); | |
| 1414 disable_warning ("Octave:imag-to-real"); | |
| 1415 disable_warning ("Octave:matlab-incompatible"); | |
| 1416 disable_warning ("Octave:missing-semicolon"); | |
| 1417 disable_warning ("Octave:neg-dim-as-zero"); | |
| 1418 disable_warning ("Octave:resize-on-range-error"); | |
| 1419 disable_warning ("Octave:separator-insert"); | |
| 1420 disable_warning ("Octave:single-quote-string"); | |
| 1421 disable_warning ("Octave:str-to-num"); | |
| 1422 disable_warning ("Octave:string-concat"); | |
| 1423 disable_warning ("Octave:variable-switch-label"); | |
|
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1424 disable_warning ("Octave:int-convert-nan"); |
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1425 disable_warning ("Octave:int-convert-non-int-val"); |
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1426 disable_warning ("Octave:int-convert-overflow"); |
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1427 disable_warning ("Octave:int-math-overflow"); |
| 5794 | 1428 } |
| 1429 | |
| 6361 | 1430 DEFUN (lasterror, args, , |
| 1431 "-*- texinfo -*-\n\ | |
| 1432 @deftypefn {Built-in Function} {@var{err} =} lasterror (@var{err})\n\ | |
| 1433 @deftypefnx {Built-in Function} {} lasterror ('reset')\n\ | |
|
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1434 Returns or sets the last error message. Called without any arguments\n\ |
| 6361 | 1435 returns a structure containing the last error message, as well as other\n\ |
|
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1436 information related to this error. The elements of this structure are:\n\ |
| 6361 | 1437 \n\ |
| 1438 @table @asis\n\ | |
| 1439 @item 'message'\n\ | |
| 1440 The text of the last error message\n\ | |
| 1441 @item 'identifier'\n\ | |
| 1442 The message identifier of this error message\n\ | |
| 1443 @item 'stack'\n\ | |
|
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1444 A structure containing information on where the message occurred. This might\n\ |
|
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1445 be an empty structure if this in the case where this information cannot\n\ |
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1446 be obtained. The fields of this structure are:\n\ |
| 6361 | 1447 \n\ |
| 1448 @table @asis\n\ | |
| 1449 @item 'file'\n\ | |
| 1450 The name of the file where the error occurred\n\ | |
| 1451 @item 'name'\n\ | |
| 7001 | 1452 The name of function in which the error occurred\n\ |
| 6361 | 1453 @item 'line'\n\ |
| 7001 | 1454 The line number at which the error occurred\n\ |
| 6361 | 1455 @item 'column'\n\ |
| 1456 An optional field with the column number at which the error occurred\n\ | |
| 1457 @end table\n\ | |
| 1458 @end table\n\ | |
| 1459 \n\ | |
| 1460 The @var{err} structure may also be passed to @code{lasterror} to set the\n\ | |
|
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1461 information about the last error. The only constraint on @var{err} in that\n\ |
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1462 case is that it is a scalar structure. Any fields of @var{err} that match\n\ |
| 6361 | 1463 the above are set to the value passed in @var{err}, while other fields are\n\ |
| 1464 set to their default values.\n\ | |
| 1465 \n\ | |
| 1466 If @code{lasterror} is called with the argument 'reset', all values take\n\ | |
| 1467 their default values.\n\ | |
| 1468 @end deftypefn") | |
| 1469 { | |
| 1470 octave_value retval; | |
| 1471 int nargin = args.length(); | |
| 1472 | |
|
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1473 unwind_protect::begin_frame ("Flasterror"); |
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1474 |
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1475 unwind_protect_int (error_state); |
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1476 error_state = 0; |
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1477 |
| 6361 | 1478 if (nargin < 2) |
| 1479 { | |
| 1480 Octave_map err; | |
| 1481 | |
| 1482 err.assign ("message", Vlast_error_message); | |
| 1483 err.assign ("identifier", Vlast_error_id); | |
| 1484 | |
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1485 err.assign ("stack", octave_value (Vlast_error_stack)); |
| 6361 | 1486 |
| 1487 if (nargin == 1) | |
| 1488 { | |
| 1489 if (args(0).is_string()) | |
| 1490 { | |
| 6483 | 1491 if (args(0).string_value () == "reset") |
| 6361 | 1492 { |
| 1493 Vlast_error_message = std::string(); | |
| 1494 Vlast_error_id = std::string(); | |
|
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1495 |
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|
1496 Vlast_error_stack = initialize_last_error_stack (); |
| 6361 | 1497 } |
| 1498 else | |
| 1499 error("lasterror: unrecognized string argument"); | |
| 1500 } | |
| 1501 else if (args(0).is_map ()) | |
| 1502 { | |
| 6483 | 1503 Octave_map new_err = args(0).map_value (); |
| 6361 | 1504 std::string new_error_message; |
| 1505 std::string new_error_id; | |
| 1506 std::string new_error_file; | |
| 1507 std::string new_error_name; | |
| 1508 int new_error_line = -1; | |
| 1509 int new_error_column = -1; | |
| 1510 | |
| 6483 | 1511 if (! error_state && new_err.contains ("message")) |
| 6361 | 1512 { |
| 1513 const std::string tmp = | |
| 6483 | 1514 new_err.contents("message")(0).string_value (); |
| 6361 | 1515 new_error_message = tmp; |
| 1516 } | |
| 1517 | |
| 6483 | 1518 if (! error_state && new_err.contains ("identifier")) |
| 6361 | 1519 { |
| 1520 const std::string tmp = | |
| 6483 | 1521 new_err.contents("identifier")(0).string_value (); |
| 6361 | 1522 new_error_id = tmp; |
| 1523 } | |
| 1524 | |
| 6483 | 1525 if (! error_state && new_err.contains ("stack")) |
| 6361 | 1526 { |
| 1527 Octave_map new_err_stack = | |
| 6483 | 1528 new_err.contents("identifier")(0).map_value (); |
| 6361 | 1529 |
| 6483 | 1530 if (! error_state && new_err_stack.contains ("file")) |
| 6361 | 1531 { |
| 1532 const std::string tmp = | |
| 6483 | 1533 new_err_stack.contents("file")(0).string_value (); |
| 6361 | 1534 new_error_file = tmp; |
| 1535 } | |
| 1536 | |
| 6483 | 1537 if (! error_state && new_err_stack.contains ("name")) |
| 6361 | 1538 { |
| 1539 const std::string tmp = | |
| 6483 | 1540 new_err_stack.contents("name")(0).string_value (); |
| 6361 | 1541 new_error_name = tmp; |
| 1542 } | |
| 1543 | |
| 6483 | 1544 if (! error_state && new_err_stack.contains ("line")) |
| 6361 | 1545 { |
| 1546 const int tmp = | |
| 6483 | 1547 new_err_stack.contents("line")(0).nint_value (); |
| 6361 | 1548 new_error_line = tmp; |
| 1549 } | |
| 1550 | |
| 6483 | 1551 if (! error_state && new_err_stack.contains ("column")) |
| 6361 | 1552 { |
| 1553 const int tmp = | |
| 6483 | 1554 new_err_stack.contents("column")(0).nint_value (); |
| 6361 | 1555 new_error_column = tmp; |
| 1556 } | |
| 1557 } | |
| 1558 | |
| 1559 if (! error_state) | |
| 1560 { | |
| 1561 Vlast_error_message = new_error_message; | |
| 1562 Vlast_error_id = new_error_id; | |
|
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1563 |
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1564 octave_idx_type curr_frame = -1; |
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1565 |
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1566 Vlast_error_stack |
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1567 = octave_call_stack::backtrace (0, curr_frame); |
| 6361 | 1568 } |
| 1569 } | |
| 1570 else | |
| 1571 error ("lasterror: argument must be a structure or a string"); | |
| 1572 } | |
| 1573 | |
| 6483 | 1574 if (! error_state) |
| 6361 | 1575 retval = err; |
| 1576 } | |
| 1577 else | |
| 1578 print_usage (); | |
| 1579 | |
|
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1580 unwind_protect::run_frame ("Flasterror"); |
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1581 |
| 6361 | 1582 return retval; |
| 1583 } | |
| 1584 | |
| 5567 | 1585 DEFUN (lasterr, args, nargout, |
| 3935 | 1586 "-*- texinfo -*-\n\ |
| 5567 | 1587 @deftypefn {Built-in Function} {[@var{msg}, @var{msgid}] =} lasterr (@var{msg}, @var{msgid})\n\ |
| 3935 | 1588 Without any arguments, return the last error message. With one\n\ |
| 5567 | 1589 argument, set the last error message to @var{msg}. With two arguments,\n\ |
| 1590 also set the last message identifier.\n\ | |
| 3935 | 1591 @end deftypefn") |
| 1592 { | |
| 1593 octave_value_list retval; | |
| 1594 | |
|
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1595 unwind_protect::begin_frame ("Flasterr"); |
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1596 |
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1597 unwind_protect_int (error_state); |
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1598 error_state = 0; |
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1599 |
| 3935 | 1600 int argc = args.length () + 1; |
| 1601 | |
| 5567 | 1602 if (argc < 4) |
| 5335 | 1603 { |
| 1604 string_vector argv = args.make_argv ("lasterr"); | |
| 3935 | 1605 |
| 5335 | 1606 if (! error_state) |
| 1607 { | |
| 5567 | 1608 std::string prev_error_id = Vlast_error_id; |
| 1609 std::string prev_error_message = Vlast_error_message; | |
| 1610 | |
| 1611 if (argc > 2) | |
| 1612 Vlast_error_id = argv(2); | |
| 1613 | |
| 1614 if (argc > 1) | |
| 5335 | 1615 Vlast_error_message = argv(1); |
| 5567 | 1616 |
| 1617 if (argc == 1 || nargout > 0) | |
| 1618 { | |
| 1619 retval(1) = prev_error_id; | |
| 1620 retval(0) = prev_error_message; | |
| 1621 } | |
| 5335 | 1622 } |
| 5567 | 1623 else |
| 5582 | 1624 error ("lasterr: expecting arguments to be character strings"); |
| 5335 | 1625 } |
| 3935 | 1626 else |
| 5823 | 1627 print_usage (); |
| 3935 | 1628 |
|
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1629 unwind_protect::run_frame ("Flasterr"); |
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1630 |
| 3935 | 1631 return retval; |
| 1632 } | |
| 1633 | |
| 4699 | 1634 // For backward compatibility. |
| 1635 DEFALIAS (error_text, lasterr); | |
| 1636 DEFALIAS (__error_text__, lasterr); | |
| 1637 | |
| 5567 | 1638 DEFUN (lastwarn, args, nargout, |
| 3934 | 1639 "-*- texinfo -*-\n\ |
| 5567 | 1640 @deftypefn {Built-in Function} {[@var{msg}, @var{msgid}] =} lastwarn (@var{msg}, @var{msgid})\n\ |
| 3935 | 1641 Without any arguments, return the last warning message. With one\n\ |
| 5567 | 1642 argument, set the last warning message to @var{msg}. With two arguments,\n\ |
| 1643 also set the last message identifier.\n\ | |
| 3934 | 1644 @end deftypefn") |
| 1645 { | |
| 1646 octave_value_list retval; | |
| 1647 | |
| 1648 int argc = args.length () + 1; | |
| 1649 | |
| 5567 | 1650 if (argc < 4) |
| 1651 { | |
| 1652 string_vector argv = args.make_argv ("lastwarn"); | |
| 1653 | |
| 1654 if (! error_state) | |
| 1655 { | |
| 1656 std::string prev_warning_id = Vlast_warning_id; | |
| 1657 std::string prev_warning_message = Vlast_warning_message; | |
| 1658 | |
| 1659 if (argc > 2) | |
| 1660 Vlast_warning_id = argv(2); | |
| 3934 | 1661 |
| 5567 | 1662 if (argc > 1) |
| 1663 Vlast_warning_message = argv(1); | |
| 1664 | |
| 1665 if (argc == 1 || nargout > 0) | |
| 1666 { | |
| 5582 | 1667 warning_state = 0; |
| 5567 | 1668 retval(1) = prev_warning_id; |
| 1669 retval(0) = prev_warning_message; | |
| 1670 } | |
| 1671 } | |
| 1672 else | |
| 1673 error ("lastwarn: expecting arguments to be character strings"); | |
| 1674 } | |
| 3934 | 1675 else |
| 5823 | 1676 print_usage (); |
| 3934 | 1677 |
| 1678 return retval; | |
| 897 | 1679 } |
| 1680 | |
| 1957 | 1681 DEFUN (usage, args, , |
| 3373 | 1682 "-*- texinfo -*-\n\ |
| 1683 @deftypefn {Built-in Function} {} usage (@var{msg})\n\ | |
| 1684 Print the message @var{msg}, prefixed by the string @samp{usage: }, and\n\ | |
| 1685 set Octave's internal error state such that control will return to the\n\ | |
| 1686 top level without evaluating any more commands. This is useful for\n\ | |
| 1687 aborting from functions.\n\ | |
| 1688 \n\ | |
| 1689 After @code{usage} is evaluated, Octave will print a traceback of all\n\ | |
| 1690 the function calls leading to the usage message.\n\ | |
| 899 | 1691 \n\ |
| 3373 | 1692 You should use this function for reporting problems errors that result\n\ |
| 1693 from an improper call to a function, such as calling a function with an\n\ | |
| 1694 incorrect number of arguments, or with arguments of the wrong type. For\n\ | |
| 1695 example, most functions distributed with Octave begin with code like\n\ | |
| 1696 this\n\ | |
| 1697 \n\ | |
| 1698 @example\n\ | |
| 1699 @group\n\ | |
| 1700 if (nargin != 2)\n\ | |
| 1701 usage (\"foo (a, b)\");\n\ | |
| 1702 endif\n\ | |
| 1703 @end group\n\ | |
| 1704 @end example\n\ | |
| 1705 \n\ | |
| 1706 @noindent\n\ | |
| 1707 to check for the proper number of arguments.\n\ | |
| 1708 @end deftypefn") | |
| 899 | 1709 { |
| 3934 | 1710 octave_value_list retval; |
| 5567 | 1711 handle_message (usage_with_id, "", "unknown", args); |
| 3934 | 1712 return retval; |
| 899 | 1713 } |
| 1714 | |
| 5794 | 1715 DEFUN (beep_on_error, args, nargout, |
| 1716 "-*- texinfo -*-\n\ | |
| 1717 @deftypefn {Built-in Function} {@var{val} =} beep_on_error ()\n\ | |
| 1718 @deftypefnx {Built-in Function} {@var{old_val} =} beep_on_error (@var{new_val})\n\ | |
| 1719 Query or set the internal variable that controls whether Octave will try\n\ | |
| 1720 to ring the terminal bell before printing an error message.\n\ | |
| 1721 @end deftypefn") | |
| 3707 | 1722 { |
| 5794 | 1723 return SET_INTERNAL_VARIABLE (beep_on_error); |
| 3707 | 1724 } |
| 1725 | |
| 5794 | 1726 DEFUN (debug_on_error, args, nargout, |
| 3373 | 1727 "-*- texinfo -*-\n\ |
| 5794 | 1728 @deftypefn {Built-in Function} {@var{val} =} debug_on_error ()\n\ |
| 1729 @deftypefnx {Built-in Function} {@var{old_val} =} debug_on_error (@var{new_val})\n\ | |
| 1730 Query or set the internal variable that controls whether Octave will try\n\ | |
| 3707 | 1731 to enter the debugger when an error is encountered. This will also\n\ |
| 1732 inhibit printing of the normal traceback message (you will only see\n\ | |
| 5794 | 1733 the top-level error message).\n\ |
| 1734 @end deftypefn") | |
| 1735 { | |
| 1736 return SET_INTERNAL_VARIABLE (debug_on_error); | |
| 1737 } | |
| 3707 | 1738 |
| 5794 | 1739 DEFUN (debug_on_warning, args, nargout, |
| 3707 | 1740 "-*- texinfo -*-\n\ |
| 5794 | 1741 @deftypefn {Built-in Function} {@var{val} =} debug_on_warning ()\n\ |
| 1742 @deftypefnx {Built-in Function} {@var{old_val} =} debug_on_warning (@var{new_val})\n\ | |
| 1743 Query or set the internal variable that controls whether Octave will try\n\ | |
| 1744 to enter the debugger when a warning is encountered.\n\ | |
| 1745 @end deftypefn") | |
| 1746 { | |
| 1747 return SET_INTERNAL_VARIABLE (debug_on_warning); | |
| 2174 | 1748 } |
| 1749 | |
|
7977
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1750 std::string |
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|
1751 last_error_message (void) |
|
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1752 { |
|
065c28e1c368
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1753 return Vlast_error_message; |
|
065c28e1c368
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|
1754 } |
|
065c28e1c368
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|
1755 |
|
065c28e1c368
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|
1756 std::string |
|
065c28e1c368
Modify Fcellfun to directly access the error message/id rather than use a call to Flasterr
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|
1757 last_error_id (void) |
|
065c28e1c368
Modify Fcellfun to directly access the error message/id rather than use a call to Flasterr
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parents:
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|
1758 { |
|
065c28e1c368
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David Bateman <dbateman@free.fr>
parents:
7976
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|
1759 return Vlast_error_id; |
|
065c28e1c368
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|
1760 } |
|
065c28e1c368
Modify Fcellfun to directly access the error message/id rather than use a call to Flasterr
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|
1761 |
|
065c28e1c368
Modify Fcellfun to directly access the error message/id rather than use a call to Flasterr
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1762 std::string |
|
065c28e1c368
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David Bateman <dbateman@free.fr>
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1763 last_warning_message (void) |
|
065c28e1c368
Modify Fcellfun to directly access the error message/id rather than use a call to Flasterr
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1764 { |
|
065c28e1c368
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David Bateman <dbateman@free.fr>
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|
1765 return Vlast_warning_message; |
|
065c28e1c368
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1766 } |
|
065c28e1c368
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1767 |
|
065c28e1c368
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1768 std::string |
|
065c28e1c368
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1769 last_warning_id (void) |
|
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1770 { |
|
065c28e1c368
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1771 return Vlast_warning_id; |
|
065c28e1c368
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1772 } |
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065c28e1c368
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1773 |
| 1 | 1774 /* |
| 1775 ;;; Local Variables: *** | |
| 1776 ;;; mode: C++ *** | |
| 1777 ;;; End: *** | |
| 1778 */ |