Mercurial > vim
annotate src/ex_eval.c @ 25180:6523cd41fa54 v8.2.3126
patch 8.2.3126: Vim9: for loop error reports wrong line number
Commit: https://github.com/vim/vim/commit/d4ab807d62c1a8262e78deb674c6750183bc030a
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Jul 8 19:22:12 2021 +0200
patch 8.2.3126: Vim9: for loop error reports wrong line number
Problem: Vim9: for loop error reports wrong line number.
Solution: Save and restore the line number when evaluating the expression.
(closes #8514)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 08 Jul 2021 19:30:04 +0200 |
| parents | 075790758d11 |
| children | e5d85e83a887 |
| rev | line source |
|---|---|
|
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 /* | |
| 11 * ex_eval.c: functions for Ex command line for the +eval feature. | |
| 12 */ | |
| 13 | |
| 14 #include "vim.h" | |
| 15 | |
| 16 #if defined(FEAT_EVAL) || defined(PROTO) | |
| 17 | |
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18 static char *get_end_emsg(cstack_T *cstack); |
| 7 | 19 |
| 20 /* | |
| 21 * Exception handling terms: | |
| 22 * | |
| 23 * :try ":try" command \ | |
| 24 * ... try block | | |
| 25 * :catch RE ":catch" command | | |
| 26 * ... catch clause |- try conditional | |
| 27 * :finally ":finally" command | | |
| 28 * ... finally clause | | |
| 29 * :endtry ":endtry" command / | |
| 30 * | |
| 31 * The try conditional may have any number of catch clauses and at most one | |
| 32 * finally clause. A ":throw" command can be inside the try block, a catch | |
| 33 * clause, the finally clause, or in a function called or script sourced from | |
| 34 * there or even outside the try conditional. Try conditionals may be nested. | |
| 35 */ | |
| 36 | |
| 37 /* | |
| 38 * Configuration whether an exception is thrown on error or interrupt. When | |
| 39 * the preprocessor macros below evaluate to FALSE, an error (did_emsg) or | |
| 40 * interrupt (got_int) under an active try conditional terminates the script | |
| 41 * after the non-active finally clauses of all active try conditionals have been | |
| 42 * executed. Otherwise, errors and/or interrupts are converted into catchable | |
| 43 * exceptions (did_throw additionally set), which terminate the script only if | |
| 44 * not caught. For user exceptions, only did_throw is set. (Note: got_int can | |
| 4352 | 45 * be set asynchronously afterwards by a SIGINT, so did_throw && got_int is not |
| 7 | 46 * a reliant test that the exception currently being thrown is an interrupt |
| 47 * exception. Similarly, did_emsg can be set afterwards on an error in an | |
| 48 * (unskipped) conditional command inside an inactive conditional, so did_throw | |
| 49 * && did_emsg is not a reliant test that the exception currently being thrown | |
| 50 * is an error exception.) - The macros can be defined as expressions checking | |
| 51 * for a variable that is allowed to be changed during execution of a script. | |
| 52 */ | |
| 53 #if 0 | |
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54 // Expressions used for testing during the development phase. |
| 7 | 55 # define THROW_ON_ERROR (!eval_to_number("$VIMNOERRTHROW")) |
| 56 # define THROW_ON_INTERRUPT (!eval_to_number("$VIMNOINTTHROW")) | |
| 57 # define THROW_TEST | |
| 58 #else | |
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59 // Values used for the Vim release. |
| 7 | 60 # define THROW_ON_ERROR TRUE |
| 1880 | 61 # define THROW_ON_ERROR_TRUE |
| 7 | 62 # define THROW_ON_INTERRUPT TRUE |
| 1880 | 63 # define THROW_ON_INTERRUPT_TRUE |
| 7 | 64 #endif |
| 65 | |
| 66 /* | |
| 67 * When several errors appear in a row, setting "force_abort" is delayed until | |
| 68 * the failing command returned. "cause_abort" is set to TRUE meanwhile, in | |
| 69 * order to indicate that situation. This is useful when "force_abort" was set | |
| 70 * during execution of a function call from an expression: the aborting of the | |
| 71 * expression evaluation is done without producing any error messages, but all | |
| 72 * error messages on parsing errors during the expression evaluation are given | |
| 73 * (even if a try conditional is active). | |
| 74 */ | |
| 75 static int cause_abort = FALSE; | |
| 76 | |
| 77 /* | |
| 1214 | 78 * Return TRUE when immediately aborting on error, or when an interrupt |
| 7 | 79 * occurred or an exception was thrown but not caught. Use for ":{range}call" |
| 80 * to check whether an aborted function that does not handle a range itself | |
| 81 * should be called again for the next line in the range. Also used for | |
| 82 * cancelling expression evaluation after a function call caused an immediate | |
| 83 * abort. Note that the first emsg() call temporarily resets "force_abort" | |
| 84 * until the throw point for error messages has been reached. That is, during | |
| 85 * cancellation of an expression evaluation after an aborting function call or | |
| 86 * due to a parsing error, aborting() always returns the same value. | |
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87 * "got_int" is also set by calling interrupt(). |
| 7 | 88 */ |
| 89 int | |
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90 aborting(void) |
| 7 | 91 { |
| 92 return (did_emsg && force_abort) || got_int || did_throw; | |
| 93 } | |
| 94 | |
| 95 /* | |
| 96 * The value of "force_abort" is temporarily reset by the first emsg() call | |
| 97 * during an expression evaluation, and "cause_abort" is used instead. It might | |
| 98 * be necessary to restore "force_abort" even before the throw point for the | |
| 99 * error message has been reached. update_force_abort() should be called then. | |
| 100 */ | |
| 101 void | |
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102 update_force_abort(void) |
| 7 | 103 { |
| 104 if (cause_abort) | |
| 105 force_abort = TRUE; | |
| 106 } | |
| 107 | |
| 108 /* | |
| 109 * Return TRUE if a command with a subcommand resulting in "retcode" should | |
| 110 * abort the script processing. Can be used to suppress an autocommand after | |
| 111 * execution of a failing subcommand as long as the error message has not been | |
| 112 * displayed and actually caused the abortion. | |
| 113 */ | |
| 114 int | |
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115 should_abort(int retcode) |
| 7 | 116 { |
| 117 return ((retcode == FAIL && trylevel != 0 && !emsg_silent) || aborting()); | |
| 118 } | |
| 119 | |
| 120 /* | |
| 121 * Return TRUE if a function with the "abort" flag should not be considered | |
| 122 * ended on an error. This means that parsing commands is continued in order | |
| 123 * to find finally clauses to be executed, and that some errors in skipped | |
| 124 * commands are still reported. | |
| 125 */ | |
| 126 int | |
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127 aborted_in_try(void) |
| 7 | 128 { |
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129 // This function is only called after an error. In this case, "force_abort" |
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130 // determines whether searching for finally clauses is necessary. |
| 7 | 131 return force_abort; |
| 132 } | |
| 133 | |
| 134 /* | |
| 135 * cause_errthrow(): Cause a throw of an error exception if appropriate. | |
| 136 * Return TRUE if the error message should not be displayed by emsg(). | |
| 137 * Sets "ignore", if the emsg() call should be ignored completely. | |
| 138 * | |
| 139 * When several messages appear in the same command, the first is usually the | |
| 140 * most specific one and used as the exception value. The "severe" flag can be | |
| 141 * set to TRUE, if a later but severer message should be used instead. | |
| 142 */ | |
| 143 int | |
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144 cause_errthrow( |
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145 char_u *mesg, |
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146 int severe, |
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147 int *ignore) |
| 7 | 148 { |
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149 msglist_T *elem; |
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150 msglist_T **plist; |
| 7 | 151 |
| 152 /* | |
| 839 | 153 * Do nothing when displaying the interrupt message or reporting an |
| 154 * uncaught exception (which has already been discarded then) at the top | |
| 155 * level. Also when no exception can be thrown. The message will be | |
| 156 * displayed by emsg(). | |
| 7 | 157 */ |
| 158 if (suppress_errthrow) | |
| 159 return FALSE; | |
| 160 | |
| 161 /* | |
| 839 | 162 * If emsg() has not been called previously, temporarily reset |
| 163 * "force_abort" until the throw point for error messages has been | |
| 164 * reached. This ensures that aborting() returns the same value for all | |
| 165 * errors that appear in the same command. This means particularly that | |
| 166 * for parsing errors during expression evaluation emsg() will be called | |
| 167 * multiply, even when the expression is evaluated from a finally clause | |
| 168 * that was activated due to an aborting error, interrupt, or exception. | |
| 7 | 169 */ |
| 170 if (!did_emsg) | |
| 171 { | |
| 172 cause_abort = force_abort; | |
| 173 force_abort = FALSE; | |
| 174 } | |
| 175 | |
| 176 /* | |
| 177 * If no try conditional is active and no exception is being thrown and | |
| 178 * there has not been an error in a try conditional or a throw so far, do | |
| 839 | 179 * nothing (for compatibility of non-EH scripts). The message will then |
| 180 * be displayed by emsg(). When ":silent!" was used and we are not | |
| 181 * currently throwing an exception, do nothing. The message text will | |
| 182 * then be stored to v:errmsg by emsg() without displaying it. | |
| 7 | 183 */ |
| 184 if (((trylevel == 0 && !cause_abort) || emsg_silent) && !did_throw) | |
| 185 return FALSE; | |
| 186 | |
| 187 /* | |
| 188 * Ignore an interrupt message when inside a try conditional or when an | |
| 839 | 189 * exception is being thrown or when an error in a try conditional or |
| 190 * throw has been detected previously. This is important in order that an | |
| 7 | 191 * interrupt exception is catchable by the innermost try conditional and |
| 192 * not replaced by an interrupt message error exception. | |
| 193 */ | |
| 194 if (mesg == (char_u *)_(e_interr)) | |
| 195 { | |
| 196 *ignore = TRUE; | |
| 197 return TRUE; | |
| 198 } | |
| 199 | |
| 200 /* | |
| 201 * Ensure that all commands in nested function calls and sourced files | |
| 202 * are aborted immediately. | |
| 203 */ | |
| 204 cause_abort = TRUE; | |
| 205 | |
| 206 /* | |
| 207 * When an exception is being thrown, some commands (like conditionals) are | |
| 208 * not skipped. Errors in those commands may affect what of the subsequent | |
| 209 * commands are regarded part of catch and finally clauses. Catching the | |
| 210 * exception would then cause execution of commands not intended by the | |
| 211 * user, who wouldn't even get aware of the problem. Therefor, discard the | |
| 212 * exception currently being thrown to prevent it from being caught. Just | |
| 213 * execute finally clauses and terminate. | |
| 214 */ | |
| 215 if (did_throw) | |
| 216 { | |
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217 // When discarding an interrupt exception, reset got_int to prevent the |
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218 // same interrupt being converted to an exception again and discarding |
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219 // the error exception we are about to throw here. |
| 7 | 220 if (current_exception->type == ET_INTERRUPT) |
| 221 got_int = FALSE; | |
| 222 discard_current_exception(); | |
| 223 } | |
| 224 | |
| 225 #ifdef THROW_TEST | |
| 226 if (!THROW_ON_ERROR) | |
| 227 { | |
| 228 /* | |
| 229 * Print error message immediately without searching for a matching | |
| 230 * catch clause; just finally clauses are executed before the script | |
| 231 * is terminated. | |
| 232 */ | |
| 233 return FALSE; | |
| 234 } | |
| 235 else | |
| 236 #endif | |
| 237 { | |
| 238 /* | |
| 239 * Prepare the throw of an error exception, so that everything will | |
| 240 * be aborted (except for executing finally clauses), until the error | |
| 241 * exception is caught; if still uncaught at the top level, the error | |
| 242 * message will be displayed and the script processing terminated | |
| 243 * then. - This function has no access to the conditional stack. | |
| 244 * Thus, the actual throw is made after the failing command has | |
| 245 * returned. - Throw only the first of several errors in a row, except | |
| 246 * a severe error is following. | |
| 247 */ | |
| 248 if (msg_list != NULL) | |
| 249 { | |
| 250 plist = msg_list; | |
| 251 while (*plist != NULL) | |
| 252 plist = &(*plist)->next; | |
| 253 | |
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254 elem = ALLOC_CLEAR_ONE(msglist_T); |
| 7 | 255 if (elem == NULL) |
| 256 { | |
| 257 suppress_errthrow = TRUE; | |
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258 emsg(_(e_outofmem)); |
| 7 | 259 } |
| 260 else | |
| 261 { | |
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262 elem->msg = (char *)vim_strsave(mesg); |
| 7 | 263 if (elem->msg == NULL) |
| 264 { | |
| 265 vim_free(elem); | |
| 266 suppress_errthrow = TRUE; | |
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267 emsg(_(e_outofmem)); |
| 7 | 268 } |
| 269 else | |
| 270 { | |
| 271 elem->next = NULL; | |
| 272 elem->throw_msg = NULL; | |
| 273 *plist = elem; | |
| 274 if (plist == msg_list || severe) | |
| 275 { | |
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276 char *tmsg; |
| 7 | 277 |
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278 // Skip the extra "Vim " prefix for message "E458". |
| 7 | 279 tmsg = elem->msg; |
| 280 if (STRNCMP(tmsg, "Vim E", 5) == 0 | |
| 281 && VIM_ISDIGIT(tmsg[5]) | |
| 282 && VIM_ISDIGIT(tmsg[6]) | |
| 283 && VIM_ISDIGIT(tmsg[7]) | |
| 284 && tmsg[8] == ':' | |
| 285 && tmsg[9] == ' ') | |
| 286 (*msg_list)->throw_msg = &tmsg[4]; | |
| 287 else | |
| 288 (*msg_list)->throw_msg = tmsg; | |
| 289 } | |
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290 |
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291 // Get the source name and lnum now, it may change before |
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292 // reaching do_errthrow(). |
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293 elem->sfile = estack_sfile(ESTACK_NONE); |
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294 elem->slnum = SOURCING_LNUM; |
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295 elem->msg_compiling = estack_compiling; |
| 7 | 296 } |
| 297 } | |
| 298 } | |
| 299 return TRUE; | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 /* | |
| 304 * Free a "msg_list" and the messages it contains. | |
| 305 */ | |
| 306 static void | |
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307 free_msglist(msglist_T *l) |
| 7 | 308 { |
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309 msglist_T *messages, *next; |
| 7 | 310 |
| 311 messages = l; | |
| 312 while (messages != NULL) | |
| 313 { | |
| 314 next = messages->next; | |
| 315 vim_free(messages->msg); | |
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316 vim_free(messages->sfile); |
| 7 | 317 vim_free(messages); |
| 318 messages = next; | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 /* | |
| 5517 | 323 * Free global "*msg_list" and the messages it contains, then set "*msg_list" |
| 324 * to NULL. | |
| 325 */ | |
| 326 void | |
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327 free_global_msglist(void) |
| 5517 | 328 { |
| 329 free_msglist(*msg_list); | |
| 330 *msg_list = NULL; | |
| 331 } | |
| 332 | |
| 333 /* | |
| 7 | 334 * Throw the message specified in the call to cause_errthrow() above as an |
| 335 * error exception. If cstack is NULL, postpone the throw until do_cmdline() | |
| 336 * has returned (see do_one_cmd()). | |
| 337 */ | |
| 338 void | |
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339 do_errthrow(cstack_T *cstack, char_u *cmdname) |
| 7 | 340 { |
| 341 /* | |
| 342 * Ensure that all commands in nested function calls and sourced files | |
| 343 * are aborted immediately. | |
| 344 */ | |
| 345 if (cause_abort) | |
| 346 { | |
| 347 cause_abort = FALSE; | |
| 348 force_abort = TRUE; | |
| 349 } | |
| 350 | |
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351 // If no exception is to be thrown or the conversion should be done after |
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352 // returning to a previous invocation of do_one_cmd(), do nothing. |
| 1046 | 353 if (msg_list == NULL || *msg_list == NULL) |
| 7 | 354 return; |
| 355 | |
| 356 if (throw_exception(*msg_list, ET_ERROR, cmdname) == FAIL) | |
| 357 free_msglist(*msg_list); | |
| 358 else | |
| 359 { | |
| 360 if (cstack != NULL) | |
| 361 do_throw(cstack); | |
| 362 else | |
| 363 need_rethrow = TRUE; | |
| 364 } | |
| 365 *msg_list = NULL; | |
| 366 } | |
| 367 | |
| 368 /* | |
| 369 * do_intthrow(): Replace the current exception by an interrupt or interrupt | |
| 370 * exception if appropriate. Return TRUE if the current exception is discarded, | |
| 371 * FALSE otherwise. | |
| 372 */ | |
| 373 int | |
|
18904
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patch 8.2.0013: not using a typedef for condstack
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diff
changeset
|
374 do_intthrow(cstack_T *cstack) |
| 7 | 375 { |
| 376 /* | |
| 377 * If no interrupt occurred or no try conditional is active and no exception | |
| 378 * is being thrown, do nothing (for compatibility of non-EH scripts). | |
| 379 */ | |
| 380 if (!got_int || (trylevel == 0 && !did_throw)) | |
| 381 return FALSE; | |
| 382 | |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
383 #ifdef THROW_TEST // avoid warning for condition always true |
| 7 | 384 if (!THROW_ON_INTERRUPT) |
| 385 { | |
| 386 /* | |
| 387 * The interrupt aborts everything except for executing finally clauses. | |
| 388 * Discard any user or error or interrupt exception currently being | |
| 389 * thrown. | |
| 390 */ | |
| 391 if (did_throw) | |
| 392 discard_current_exception(); | |
| 393 } | |
| 394 else | |
| 395 #endif | |
| 396 { | |
| 397 /* | |
| 398 * Throw an interrupt exception, so that everything will be aborted | |
| 399 * (except for executing finally clauses), until the interrupt exception | |
| 400 * is caught; if still uncaught at the top level, the script processing | |
| 401 * will be terminated then. - If an interrupt exception is already | |
| 402 * being thrown, do nothing. | |
| 403 * | |
| 404 */ | |
| 405 if (did_throw) | |
| 406 { | |
| 407 if (current_exception->type == ET_INTERRUPT) | |
| 408 return FALSE; | |
| 409 | |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
410 // An interrupt exception replaces any user or error exception. |
| 7 | 411 discard_current_exception(); |
| 412 } | |
| 413 if (throw_exception("Vim:Interrupt", ET_INTERRUPT, NULL) != FAIL) | |
| 414 do_throw(cstack); | |
| 415 } | |
| 416 | |
| 417 return TRUE; | |
| 418 } | |
| 419 | |
| 420 /* | |
| 5517 | 421 * Get an exception message that is to be stored in current_exception->value. |
| 7 | 422 */ |
|
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patch 8.1.0743: giving error messages is not flexible
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diff
changeset
|
423 char * |
|
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commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
424 get_exception_string( |
|
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
425 void *value, |
|
10361
147f45c283e1
commit https://github.com/vim/vim/commit/8a5883b7488e492419dde7e1637cc72f2d566ba4
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
426 except_type_T type, |
|
7819
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commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
427 char_u *cmdname, |
|
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
428 int *should_free) |
| 7 | 429 { |
|
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patch 8.1.0743: giving error messages is not flexible
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diff
changeset
|
430 char *ret; |
|
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
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diff
changeset
|
431 char *mesg; |
| 7 | 432 int cmdlen; |
|
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patch 8.1.0743: giving error messages is not flexible
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changeset
|
433 char *p, *val; |
| 7 | 434 |
| 435 if (type == ET_ERROR) | |
| 436 { | |
|
8418
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commit https://github.com/vim/vim/commit/9ef00be261115acb5bae3b3ca45c1d86a19ba2c7
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
437 *should_free = TRUE; |
|
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patch 8.2.0823: Vim9: script reload test is disabled
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diff
changeset
|
438 mesg = ((msglist_T *)value)->throw_msg; |
| 7 | 439 if (cmdname != NULL && *cmdname != NUL) |
| 440 { | |
| 835 | 441 cmdlen = (int)STRLEN(cmdname); |
|
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patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
442 ret = (char *)vim_strnsave((char_u *)"Vim(", |
|
20830
9064044fd4f6
patch 8.2.0967: unnecessary type casts for vim_strnsave()
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
443 4 + cmdlen + 2 + STRLEN(mesg)); |
| 5517 | 444 if (ret == NULL) |
| 445 return ret; | |
| 446 STRCPY(&ret[4], cmdname); | |
| 447 STRCPY(&ret[4 + cmdlen], "):"); | |
| 448 val = ret + 4 + cmdlen + 2; | |
| 7 | 449 } |
| 450 else | |
| 451 { | |
|
20830
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patch 8.2.0967: unnecessary type casts for vim_strnsave()
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changeset
|
452 ret = (char *)vim_strnsave((char_u *)"Vim:", 4 + STRLEN(mesg)); |
| 5517 | 453 if (ret == NULL) |
| 454 return ret; | |
| 455 val = ret + 4; | |
| 7 | 456 } |
| 457 | |
|
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patch 8.1.2379: using old C style comments
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changeset
|
458 // msg_add_fname may have been used to prefix the message with a file |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
459 // name in quotes. In the exception value, put the file name in |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
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diff
changeset
|
460 // parentheses and move it to the end. |
| 7 | 461 for (p = mesg; ; p++) |
| 462 { | |
| 463 if (*p == NUL | |
| 464 || (*p == 'E' | |
| 465 && VIM_ISDIGIT(p[1]) | |
| 466 && (p[2] == ':' | |
| 467 || (VIM_ISDIGIT(p[2]) | |
| 468 && (p[3] == ':' | |
| 469 || (VIM_ISDIGIT(p[3]) | |
| 470 && p[4] == ':')))))) | |
| 471 { | |
| 273 | 472 if (*p == NUL || p == mesg) |
|
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changeset
|
473 STRCAT(val, mesg); // 'E123' missing or at beginning |
| 7 | 474 else |
| 475 { | |
|
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changeset
|
476 // '"filename" E123: message text' |
| 7 | 477 if (mesg[0] != '"' || p-2 < &mesg[1] || |
| 478 p[-2] != '"' || p[-1] != ' ') | |
|
18779
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patch 8.1.2379: using old C style comments
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diff
changeset
|
479 // "E123:" is part of the file name. |
| 7 | 480 continue; |
| 481 | |
| 482 STRCAT(val, p); | |
| 483 p[-2] = NUL; | |
| 484 sprintf((char *)(val + STRLEN(p)), " (%s)", &mesg[1]); | |
| 485 p[-2] = '"'; | |
| 486 } | |
| 487 break; | |
| 488 } | |
| 489 } | |
| 490 } | |
| 491 else | |
| 5517 | 492 { |
| 493 *should_free = FALSE; | |
|
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patch 8.1.0743: giving error messages is not flexible
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diff
changeset
|
494 ret = value; |
| 5517 | 495 } |
| 496 | |
| 497 return ret; | |
| 498 } | |
| 499 | |
| 500 | |
| 501 /* | |
| 502 * Throw a new exception. Return FAIL when out of memory or it was tried to | |
| 503 * throw an illegal user exception. "value" is the exception string for a | |
| 504 * user or interrupt exception, or points to a message list in case of an | |
| 505 * error exception. | |
| 506 */ | |
|
19181
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patch 8.2.0149: maintaining a Vim9 branch separately is more work
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diff
changeset
|
507 int |
|
10361
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commit https://github.com/vim/vim/commit/8a5883b7488e492419dde7e1637cc72f2d566ba4
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
508 throw_exception(void *value, except_type_T type, char_u *cmdname) |
| 5517 | 509 { |
| 510 except_T *excp; | |
| 511 int should_free; | |
| 512 | |
| 513 /* | |
| 514 * Disallow faking Interrupt or error exceptions as user exceptions. They | |
| 515 * would be treated differently from real interrupt or error exceptions | |
| 516 * when no active try block is found, see do_cmdline(). | |
| 517 */ | |
| 518 if (type == ET_USER) | |
| 519 { | |
| 520 if (STRNCMP((char_u *)value, "Vim", 3) == 0 | |
| 521 && (((char_u *)value)[3] == NUL || ((char_u *)value)[3] == ':' | |
| 522 || ((char_u *)value)[3] == '(')) | |
| 523 { | |
|
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patch 8.1.0743: giving error messages is not flexible
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diff
changeset
|
524 emsg(_("E608: Cannot :throw exceptions with 'Vim' prefix")); |
| 5517 | 525 goto fail; |
| 526 } | |
| 527 } | |
| 528 | |
|
16825
ce04ebdf26b8
patch 8.1.1414: alloc() returning "char_u *" causes a lot of type casts
Bram Moolenaar <Bram@vim.org>
parents:
16764
diff
changeset
|
529 excp = ALLOC_ONE(except_T); |
| 5517 | 530 if (excp == NULL) |
| 531 goto nomem; | |
| 532 | |
| 533 if (type == ET_ERROR) | |
|
18779
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
534 // Store the original message and prefix the exception value with |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
535 // "Vim:" or, if a command name is given, "Vim(cmdname):". |
|
20538
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
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parents:
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diff
changeset
|
536 excp->messages = (msglist_T *)value; |
| 5517 | 537 |
| 538 excp->value = get_exception_string(value, type, cmdname, &should_free); | |
| 539 if (excp->value == NULL && should_free) | |
| 540 goto nomem; | |
| 7 | 541 |
| 542 excp->type = type; | |
|
20538
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patch 8.2.0823: Vim9: script reload test is disabled
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parents:
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diff
changeset
|
543 if (type == ET_ERROR && ((msglist_T *)value)->sfile != NULL) |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
544 { |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
545 msglist_T *entry = (msglist_T *)value; |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
546 |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
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parents:
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diff
changeset
|
547 excp->throw_name = entry->sfile; |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
548 entry->sfile = NULL; |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
549 excp->throw_lnum = entry->slnum; |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
550 } |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
551 else |
| 7 | 552 { |
|
22208
a607f02fd17a
patch 8.2.1653: expand('<stack>') does not include the final line number
Bram Moolenaar <Bram@vim.org>
parents:
21493
diff
changeset
|
553 excp->throw_name = estack_sfile(ESTACK_NONE); |
|
20538
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
554 if (excp->throw_name == NULL) |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
555 excp->throw_name = vim_strsave((char_u *)""); |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
556 if (excp->throw_name == NULL) |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
557 { |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
558 if (should_free) |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
559 vim_free(excp->value); |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
560 goto nomem; |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
561 } |
|
9f921ba86d05
patch 8.2.0823: Vim9: script reload test is disabled
Bram Moolenaar <Bram@vim.org>
parents:
20397
diff
changeset
|
562 excp->throw_lnum = SOURCING_LNUM; |
| 7 | 563 } |
| 564 | |
| 565 if (p_verbose >= 13 || debug_break_level > 0) | |
| 566 { | |
| 567 int save_msg_silent = msg_silent; | |
| 568 | |
| 569 if (debug_break_level > 0) | |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
570 msg_silent = FALSE; // display messages |
| 293 | 571 else |
| 572 verbose_enter(); | |
| 7 | 573 ++no_wait_return; |
| 293 | 574 if (debug_break_level > 0 || *p_vfile == NUL) |
|
18779
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
575 msg_scroll = TRUE; // always scroll up, don't overwrite |
| 293 | 576 |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
577 smsg(_("Exception thrown: %s"), excp->value); |
|
18779
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
578 msg_puts("\n"); // don't overwrite this either |
| 293 | 579 |
| 580 if (debug_break_level > 0 || *p_vfile == NUL) | |
| 581 cmdline_row = msg_row; | |
| 7 | 582 --no_wait_return; |
| 583 if (debug_break_level > 0) | |
| 584 msg_silent = save_msg_silent; | |
| 293 | 585 else |
| 586 verbose_leave(); | |
| 7 | 587 } |
| 588 | |
| 589 current_exception = excp; | |
| 590 return OK; | |
| 591 | |
| 592 nomem: | |
| 593 vim_free(excp); | |
| 594 suppress_errthrow = TRUE; | |
|
15470
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patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
595 emsg(_(e_outofmem)); |
| 7 | 596 fail: |
| 597 current_exception = NULL; | |
| 598 return FAIL; | |
| 599 } | |
| 600 | |
| 601 /* | |
| 602 * Discard an exception. "was_finished" is set when the exception has been | |
| 603 * caught and the catch clause has been ended normally. | |
| 604 */ | |
| 605 static void | |
|
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commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
606 discard_exception(except_T *excp, int was_finished) |
| 7 | 607 { |
| 608 char_u *saved_IObuff; | |
| 609 | |
|
23235
22037d6da577
patch 8.2.2163: crash when discarded exception is the current exception
Bram Moolenaar <Bram@vim.org>
parents:
22643
diff
changeset
|
610 if (current_exception == excp) |
|
22037d6da577
patch 8.2.2163: crash when discarded exception is the current exception
Bram Moolenaar <Bram@vim.org>
parents:
22643
diff
changeset
|
611 current_exception = NULL; |
| 7 | 612 if (excp == NULL) |
| 613 { | |
|
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commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
614 internal_error("discard_exception()"); |
| 7 | 615 return; |
| 616 } | |
| 617 | |
| 618 if (p_verbose >= 13 || debug_break_level > 0) | |
| 619 { | |
| 620 int save_msg_silent = msg_silent; | |
| 621 | |
| 622 saved_IObuff = vim_strsave(IObuff); | |
| 623 if (debug_break_level > 0) | |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
624 msg_silent = FALSE; // display messages |
| 293 | 625 else |
| 626 verbose_enter(); | |
| 7 | 627 ++no_wait_return; |
| 293 | 628 if (debug_break_level > 0 || *p_vfile == NUL) |
|
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patch 8.1.2379: using old C style comments
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parents:
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diff
changeset
|
629 msg_scroll = TRUE; // always scroll up, don't overwrite |
| 273 | 630 smsg(was_finished |
|
15470
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patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
631 ? _("Exception finished: %s") |
|
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
632 : _("Exception discarded: %s"), |
| 7 | 633 excp->value); |
|
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patch 8.1.2379: using old C style comments
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diff
changeset
|
634 msg_puts("\n"); // don't overwrite this either |
| 293 | 635 if (debug_break_level > 0 || *p_vfile == NUL) |
| 636 cmdline_row = msg_row; | |
| 7 | 637 --no_wait_return; |
| 638 if (debug_break_level > 0) | |
| 639 msg_silent = save_msg_silent; | |
| 293 | 640 else |
| 641 verbose_leave(); | |
| 7 | 642 STRCPY(IObuff, saved_IObuff); |
| 643 vim_free(saved_IObuff); | |
| 644 } | |
| 645 if (excp->type != ET_INTERRUPT) | |
| 646 vim_free(excp->value); | |
| 647 if (excp->type == ET_ERROR) | |
| 648 free_msglist(excp->messages); | |
| 649 vim_free(excp->throw_name); | |
| 650 vim_free(excp); | |
| 651 } | |
| 652 | |
| 653 /* | |
| 654 * Discard the exception currently being thrown. | |
| 655 */ | |
| 656 void | |
|
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commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
657 discard_current_exception(void) |
| 7 | 658 { |
|
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|
659 if (current_exception != NULL) |
|
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changeset
|
660 discard_exception(current_exception, FALSE); |
| 7 | 661 did_throw = FALSE; |
| 662 need_rethrow = FALSE; | |
| 663 } | |
| 664 | |
| 665 /* | |
| 666 * Put an exception on the caught stack. | |
| 667 */ | |
|
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668 void |
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diff
changeset
|
669 catch_exception(except_T *excp) |
| 7 | 670 { |
| 671 excp->caught = caught_stack; | |
| 672 caught_stack = excp; | |
|
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673 set_vim_var_string(VV_EXCEPTION, (char_u *)excp->value, -1); |
| 7 | 674 if (*excp->throw_name != NUL) |
| 675 { | |
| 676 if (excp->throw_lnum != 0) | |
| 273 | 677 vim_snprintf((char *)IObuff, IOSIZE, _("%s, line %ld"), |
| 678 excp->throw_name, (long)excp->throw_lnum); | |
| 7 | 679 else |
| 273 | 680 vim_snprintf((char *)IObuff, IOSIZE, "%s", excp->throw_name); |
| 7 | 681 set_vim_var_string(VV_THROWPOINT, IObuff, -1); |
| 682 } | |
| 683 else | |
|
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|
684 // throw_name not set on an exception from a command that was typed. |
| 7 | 685 set_vim_var_string(VV_THROWPOINT, NULL, -1); |
| 686 | |
| 687 if (p_verbose >= 13 || debug_break_level > 0) | |
| 688 { | |
| 689 int save_msg_silent = msg_silent; | |
| 690 | |
| 691 if (debug_break_level > 0) | |
|
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|
692 msg_silent = FALSE; // display messages |
| 293 | 693 else |
| 694 verbose_enter(); | |
| 7 | 695 ++no_wait_return; |
| 293 | 696 if (debug_break_level > 0 || *p_vfile == NUL) |
|
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697 msg_scroll = TRUE; // always scroll up, don't overwrite |
| 293 | 698 |
|
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699 smsg(_("Exception caught: %s"), excp->value); |
|
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|
700 msg_puts("\n"); // don't overwrite this either |
| 293 | 701 |
| 702 if (debug_break_level > 0 || *p_vfile == NUL) | |
| 703 cmdline_row = msg_row; | |
| 7 | 704 --no_wait_return; |
| 705 if (debug_break_level > 0) | |
| 706 msg_silent = save_msg_silent; | |
| 293 | 707 else |
| 708 verbose_leave(); | |
| 7 | 709 } |
| 710 } | |
| 711 | |
| 712 /* | |
| 713 * Remove an exception from the caught stack. | |
| 714 */ | |
| 715 static void | |
|
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changeset
|
716 finish_exception(except_T *excp) |
| 7 | 717 { |
| 718 if (excp != caught_stack) | |
|
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changeset
|
719 internal_error("finish_exception()"); |
| 7 | 720 caught_stack = caught_stack->caught; |
| 721 if (caught_stack != NULL) | |
| 722 { | |
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723 set_vim_var_string(VV_EXCEPTION, (char_u *)caught_stack->value, -1); |
| 7 | 724 if (*caught_stack->throw_name != NUL) |
| 725 { | |
| 726 if (caught_stack->throw_lnum != 0) | |
| 273 | 727 vim_snprintf((char *)IObuff, IOSIZE, |
| 7 | 728 _("%s, line %ld"), caught_stack->throw_name, |
| 729 (long)caught_stack->throw_lnum); | |
| 730 else | |
| 273 | 731 vim_snprintf((char *)IObuff, IOSIZE, "%s", |
| 732 caught_stack->throw_name); | |
| 7 | 733 set_vim_var_string(VV_THROWPOINT, IObuff, -1); |
| 734 } | |
| 735 else | |
|
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736 // throw_name not set on an exception from a command that was |
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737 // typed. |
| 7 | 738 set_vim_var_string(VV_THROWPOINT, NULL, -1); |
| 739 } | |
| 740 else | |
| 741 { | |
| 742 set_vim_var_string(VV_EXCEPTION, NULL, -1); | |
| 743 set_vim_var_string(VV_THROWPOINT, NULL, -1); | |
| 744 } | |
| 745 | |
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|
746 // Discard the exception, but use the finish message for 'verbose'. |
| 7 | 747 discard_exception(excp, TRUE); |
| 748 } | |
| 749 | |
| 750 /* | |
| 751 * Flags specifying the message displayed by report_pending. | |
| 752 */ | |
| 753 #define RP_MAKE 0 | |
| 754 #define RP_RESUME 1 | |
| 755 #define RP_DISCARD 2 | |
| 756 | |
| 757 /* | |
| 758 * Report information about something pending in a finally clause if required by | |
| 759 * the 'verbose' option or when debugging. "action" tells whether something is | |
| 760 * made pending or something pending is resumed or discarded. "pending" tells | |
| 761 * what is pending. "value" specifies the return value for a pending ":return" | |
| 762 * or the exception value for a pending exception. | |
| 763 */ | |
| 764 static void | |
|
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changeset
|
765 report_pending(int action, int pending, void *value) |
| 7 | 766 { |
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767 char *mesg; |
| 7 | 768 char *s; |
| 769 int save_msg_silent; | |
| 770 | |
| 771 | |
| 772 switch (action) | |
| 773 { | |
| 774 case RP_MAKE: | |
|
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775 mesg = _("%s made pending"); |
| 7 | 776 break; |
| 777 case RP_RESUME: | |
|
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778 mesg = _("%s resumed"); |
| 7 | 779 break; |
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780 // case RP_DISCARD: |
| 7 | 781 default: |
|
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782 mesg = _("%s discarded"); |
| 7 | 783 break; |
| 784 } | |
| 785 | |
| 786 switch (pending) | |
| 787 { | |
| 788 case CSTP_NONE: | |
| 789 return; | |
| 790 | |
| 791 case CSTP_CONTINUE: | |
| 792 s = ":continue"; | |
| 793 break; | |
| 794 case CSTP_BREAK: | |
| 795 s = ":break"; | |
| 796 break; | |
| 797 case CSTP_FINISH: | |
| 798 s = ":finish"; | |
| 799 break; | |
| 800 case CSTP_RETURN: | |
|
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801 // ":return" command producing value, allocated |
| 7 | 802 s = (char *)get_return_cmd(value); |
| 803 break; | |
| 804 | |
| 805 default: | |
| 806 if (pending & CSTP_THROW) | |
| 807 { | |
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808 vim_snprintf((char *)IObuff, IOSIZE, mesg, _("Exception")); |
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809 mesg = (char *)vim_strnsave(IObuff, STRLEN(IObuff) + 4); |
| 7 | 810 STRCAT(mesg, ": %s"); |
| 811 s = (char *)((except_T *)value)->value; | |
| 812 } | |
| 813 else if ((pending & CSTP_ERROR) && (pending & CSTP_INTERRUPT)) | |
| 814 s = _("Error and interrupt"); | |
| 815 else if (pending & CSTP_ERROR) | |
| 816 s = _("Error"); | |
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817 else // if (pending & CSTP_INTERRUPT) |
| 7 | 818 s = _("Interrupt"); |
| 819 } | |
| 820 | |
| 821 save_msg_silent = msg_silent; | |
| 822 if (debug_break_level > 0) | |
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823 msg_silent = FALSE; // display messages |
| 7 | 824 ++no_wait_return; |
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825 msg_scroll = TRUE; // always scroll up, don't overwrite |
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826 smsg(mesg, s); |
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827 msg_puts("\n"); // don't overwrite this either |
| 7 | 828 cmdline_row = msg_row; |
| 829 --no_wait_return; | |
| 830 if (debug_break_level > 0) | |
| 831 msg_silent = save_msg_silent; | |
| 832 | |
| 833 if (pending == CSTP_RETURN) | |
| 834 vim_free(s); | |
| 835 else if (pending & CSTP_THROW) | |
| 836 vim_free(mesg); | |
| 837 } | |
| 838 | |
| 839 /* | |
| 840 * If something is made pending in a finally clause, report it if required by | |
| 841 * the 'verbose' option or when debugging. | |
| 842 */ | |
| 843 void | |
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changeset
|
844 report_make_pending(int pending, void *value) |
| 7 | 845 { |
| 846 if (p_verbose >= 14 || debug_break_level > 0) | |
| 293 | 847 { |
| 848 if (debug_break_level <= 0) | |
| 849 verbose_enter(); | |
| 7 | 850 report_pending(RP_MAKE, pending, value); |
| 293 | 851 if (debug_break_level <= 0) |
| 852 verbose_leave(); | |
| 853 } | |
| 7 | 854 } |
| 855 | |
| 856 /* | |
| 857 * If something pending in a finally clause is resumed at the ":endtry", report | |
| 858 * it if required by the 'verbose' option or when debugging. | |
| 859 */ | |
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860 static void |
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diff
changeset
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861 report_resume_pending(int pending, void *value) |
| 7 | 862 { |
| 863 if (p_verbose >= 14 || debug_break_level > 0) | |
| 293 | 864 { |
| 865 if (debug_break_level <= 0) | |
| 866 verbose_enter(); | |
| 7 | 867 report_pending(RP_RESUME, pending, value); |
| 293 | 868 if (debug_break_level <= 0) |
| 869 verbose_leave(); | |
| 870 } | |
| 7 | 871 } |
| 872 | |
| 873 /* | |
| 874 * If something pending in a finally clause is discarded, report it if required | |
| 875 * by the 'verbose' option or when debugging. | |
| 876 */ | |
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877 static void |
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changeset
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878 report_discard_pending(int pending, void *value) |
| 7 | 879 { |
| 880 if (p_verbose >= 14 || debug_break_level > 0) | |
| 293 | 881 { |
| 882 if (debug_break_level <= 0) | |
| 883 verbose_enter(); | |
| 7 | 884 report_pending(RP_DISCARD, pending, value); |
| 293 | 885 if (debug_break_level <= 0) |
| 886 verbose_leave(); | |
| 887 } | |
| 7 | 888 } |
| 889 | |
| 890 | |
| 891 /* | |
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892 * ":eval". |
|
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893 */ |
|
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894 void |
|
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895 ex_eval(exarg_T *eap) |
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changeset
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896 { |
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897 typval_T tv; |
|
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898 evalarg_T evalarg; |
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899 |
|
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900 fill_evalarg_from_eap(&evalarg, eap, eap->skip); |
|
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901 |
|
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902 if (eval0(eap->arg, &tv, eap, &evalarg) == OK) |
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903 clear_tv(&tv); |
|
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904 |
|
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905 clear_evalarg(&evalarg, eap); |
|
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906 } |
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907 |
|
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changeset
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908 /* |
|
22551
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909 * Start a new scope/block. Caller should have checked that cs_idx is not |
|
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910 * exceeding CSTACK_LEN. |
|
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911 */ |
|
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912 static void |
|
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diff
changeset
|
913 enter_block(cstack_T *cstack) |
|
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914 { |
|
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changeset
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915 ++cstack->cs_idx; |
|
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patch 8.2.2553: Vim9: Cannot put "|" after "{"
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changeset
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916 if (in_vim9script() && current_sctx.sc_sid > 0) |
|
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917 { |
|
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918 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
|
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919 |
|
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920 cstack->cs_script_var_len[cstack->cs_idx] = si->sn_var_vals.ga_len; |
|
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patch 8.2.1846: Vim9: block variables are not found in compiled function
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changeset
|
921 cstack->cs_block_id[cstack->cs_idx] = ++si->sn_last_block_id; |
|
107eae953b87
patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
parents:
22594
diff
changeset
|
922 si->sn_current_block_id = si->sn_last_block_id; |
|
22594
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
923 } |
|
23752
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
parents:
23493
diff
changeset
|
924 else |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
parents:
23493
diff
changeset
|
925 { |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
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23493
diff
changeset
|
926 // Just in case in_vim9script() does not return the same value when the |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
927 // block ends. |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
928 cstack->cs_script_var_len[cstack->cs_idx] = 0; |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
929 cstack->cs_block_id[cstack->cs_idx] = 0; |
|
7425d3e5804e
patch 8.2.2417: condition stack values may be used when not set
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
930 } |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
931 } |
|
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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|
932 |
|
86a115a80262
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
933 static void |
|
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
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changeset
|
934 leave_block(cstack_T *cstack) |
|
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
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parents:
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diff
changeset
|
935 { |
|
22594
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
936 if (in_vim9script() && SCRIPT_ID_VALID(current_sctx.sc_sid)) |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
937 { |
|
22553
3ed3bed38e0f
patch 8.2.1825: Vim9: accessing freed memory
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
938 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
|
22594
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
939 int i; |
|
22643
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
22596
diff
changeset
|
940 int func_defined = |
|
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
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changeset
|
941 cstack->cs_flags[cstack->cs_idx] & CSF_FUNC_DEF; |
|
22551
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changeset
|
942 |
|
22594
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diff
changeset
|
943 for (i = cstack->cs_script_var_len[cstack->cs_idx]; |
|
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
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diff
changeset
|
944 i < si->sn_var_vals.ga_len; ++i) |
|
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Bram Moolenaar <Bram@vim.org>
parents:
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|
945 { |
|
22594
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
946 svar_T *sv = ((svar_T *)si->sn_var_vals.ga_data) + i; |
|
22553
3ed3bed38e0f
patch 8.2.1825: Vim9: accessing freed memory
Bram Moolenaar <Bram@vim.org>
parents:
22551
diff
changeset
|
947 |
|
22643
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
22596
diff
changeset
|
948 // sv_name is set to NULL if it was already removed. This happens |
|
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
949 // when it was defined in an inner block and no functions were |
|
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
950 // defined there. |
|
22594
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
parents:
22555
diff
changeset
|
951 if (sv->sv_name != NULL) |
|
209c7aa56325
patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
952 // Remove a variable declared inside the block, if it still |
|
22643
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
22596
diff
changeset
|
953 // exists, from sn_vars and move the value into sn_all_vars |
|
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
22596
diff
changeset
|
954 // if "func_defined" is non-zero. |
|
71b57779177d
patch 8.2.1870: Vim9: no need to keep all script variables
Bram Moolenaar <Bram@vim.org>
parents:
22596
diff
changeset
|
955 hide_script_var(si, i, func_defined); |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
22208
diff
changeset
|
956 } |
|
22594
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
957 |
|
209c7aa56325
patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
958 // TODO: is this needed? |
|
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patch 8.2.1845: Vim9: function defined in a block can't use block variables
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
959 cstack->cs_script_var_len[cstack->cs_idx] = si->sn_var_vals.ga_len; |
|
22596
107eae953b87
patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
parents:
22594
diff
changeset
|
960 |
|
107eae953b87
patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
961 if (cstack->cs_idx == 0) |
|
107eae953b87
patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
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changeset
|
962 si->sn_current_block_id = 0; |
|
107eae953b87
patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
parents:
22594
diff
changeset
|
963 else |
|
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patch 8.2.1846: Vim9: block variables are not found in compiled function
Bram Moolenaar <Bram@vim.org>
parents:
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changeset
|
964 si->sn_current_block_id = cstack->cs_block_id[cstack->cs_idx - 1]; |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
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parents:
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diff
changeset
|
965 } |
|
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
966 --cstack->cs_idx; |
|
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patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
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changeset
|
967 } |
|
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
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changeset
|
968 |
|
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
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parents:
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diff
changeset
|
969 /* |
| 7 | 970 * ":if". |
| 971 */ | |
| 972 void | |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
973 ex_if(exarg_T *eap) |
| 7 | 974 { |
| 975 int error; | |
| 976 int skip; | |
| 977 int result; | |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
parents:
18779
diff
changeset
|
978 cstack_T *cstack = eap->cstack; |
| 7 | 979 |
| 980 if (cstack->cs_idx == CSTACK_LEN - 1) | |
|
21459
a422bd80b434
patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
981 eap->errmsg = _("E579: :if nesting too deep"); |
| 7 | 982 else |
| 983 { | |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
984 enter_block(cstack); |
| 7 | 985 cstack->cs_flags[cstack->cs_idx] = 0; |
| 986 | |
| 987 /* | |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
988 * Don't do something after an error, interrupt, or throw, or when |
|
86a115a80262
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Bram Moolenaar <Bram@vim.org>
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changeset
|
989 * there is a surrounding conditional and it was not active. |
| 7 | 990 */ |
| 991 skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0 | |
| 992 && !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE)); | |
| 993 | |
|
20996
3af71cbcfdbe
patch 8.2.1049: Vim9: leaking memory when using continuation line
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
994 result = eval_to_bool(eap->arg, &error, eap, skip); |
| 7 | 995 |
| 996 if (!skip && !error) | |
| 997 { | |
| 998 if (result) | |
| 999 cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE | CSF_TRUE; | |
| 1000 } | |
| 1001 else | |
|
18779
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1002 // set TRUE, so this conditional will never get active |
| 7 | 1003 cstack->cs_flags[cstack->cs_idx] = CSF_TRUE; |
| 1004 } | |
| 1005 } | |
| 1006 | |
| 1007 /* | |
| 1008 * ":endif". | |
| 1009 */ | |
| 1010 void | |
|
7819
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commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
1011 ex_endif(exarg_T *eap) |
| 7 | 1012 { |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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parents:
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diff
changeset
|
1013 cstack_T *cstack = eap->cstack; |
|
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1014 |
|
24222
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1015 if (cmdmod_error()) |
|
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1016 return; |
| 7 | 1017 did_endif = TRUE; |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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changeset
|
1018 if (cstack->cs_idx < 0 |
|
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parents:
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diff
changeset
|
1019 || (cstack->cs_flags[cstack->cs_idx] |
|
22555
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patch 8.2.1826: Vim9: cannot use a {} block at script level
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diff
changeset
|
1020 & (CSF_WHILE | CSF_FOR | CSF_TRY | CSF_BLOCK))) |
|
21459
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patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
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changeset
|
1021 eap->errmsg = _(e_endif_without_if); |
| 7 | 1022 else |
| 1023 { | |
| 1024 /* | |
| 1025 * When debugging or a breakpoint was encountered, display the debug | |
| 1026 * prompt (if not already done). This shows the user that an ":endif" | |
| 1027 * is executed when the ":if" or a previous ":elseif" was not TRUE. | |
| 1028 * Handle a ">quit" debug command as if an interrupt had occurred before | |
| 1029 * the ":endif". That is, throw an interrupt exception if appropriate. | |
| 1030 * Doing this here prevents an exception for a parsing error being | |
| 1031 * discarded by throwing the interrupt exception later on. | |
| 1032 */ | |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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changeset
|
1033 if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRUE) |
| 359 | 1034 && dbg_check_skipped(eap)) |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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changeset
|
1035 (void)do_intthrow(cstack); |
| 7 | 1036 |
|
22551
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patch 8.2.1824: Vim9: variables at the script level escape their scope
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changeset
|
1037 leave_block(cstack); |
| 7 | 1038 } |
| 1039 } | |
| 1040 | |
| 1041 /* | |
| 1042 * ":else" and ":elseif". | |
| 1043 */ | |
| 1044 void | |
|
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Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
1045 ex_else(exarg_T *eap) |
| 7 | 1046 { |
| 1047 int error; | |
| 1048 int skip; | |
| 1049 int result; | |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
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changeset
|
1050 cstack_T *cstack = eap->cstack; |
| 7 | 1051 |
| 1052 /* | |
| 1053 * Don't do something after an error, interrupt, or throw, or when there is | |
| 1054 * a surrounding conditional and it was not active. | |
| 1055 */ | |
| 1056 skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0 | |
| 1057 && !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE)); | |
| 1058 | |
| 1059 if (cstack->cs_idx < 0 | |
| 75 | 1060 || (cstack->cs_flags[cstack->cs_idx] |
|
22555
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patch 8.2.1826: Vim9: cannot use a {} block at script level
Bram Moolenaar <Bram@vim.org>
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22553
diff
changeset
|
1061 & (CSF_WHILE | CSF_FOR | CSF_TRY | CSF_BLOCK))) |
| 7 | 1062 { |
| 1063 if (eap->cmdidx == CMD_else) | |
| 1064 { | |
|
21459
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changeset
|
1065 eap->errmsg = _(e_else_without_if); |
| 7 | 1066 return; |
| 1067 } | |
|
21459
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patch 8.2.1280: Ex command error cannot contain an argument
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changeset
|
1068 eap->errmsg = _(e_elseif_without_if); |
| 7 | 1069 skip = TRUE; |
| 1070 } | |
| 1071 else if (cstack->cs_flags[cstack->cs_idx] & CSF_ELSE) | |
| 1072 { | |
| 1073 if (eap->cmdidx == CMD_else) | |
| 1074 { | |
|
21459
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changeset
|
1075 eap->errmsg = _("E583: multiple :else"); |
| 7 | 1076 return; |
| 1077 } | |
|
21459
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patch 8.2.1280: Ex command error cannot contain an argument
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changeset
|
1078 eap->errmsg = _("E584: :elseif after :else"); |
| 7 | 1079 skip = TRUE; |
| 1080 } | |
| 1081 | |
|
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
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changeset
|
1082 // if skipping or the ":if" was TRUE, reset ACTIVE, otherwise set it |
| 7 | 1083 if (skip || cstack->cs_flags[cstack->cs_idx] & CSF_TRUE) |
| 1084 { | |
| 1085 if (eap->errmsg == NULL) | |
| 1086 cstack->cs_flags[cstack->cs_idx] = CSF_TRUE; | |
|
18779
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parents:
18699
diff
changeset
|
1087 skip = TRUE; // don't evaluate an ":elseif" |
| 7 | 1088 } |
| 1089 else | |
| 1090 cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE; | |
| 1091 | |
| 1092 /* | |
| 1093 * When debugging or a breakpoint was encountered, display the debug prompt | |
| 1094 * (if not already done). This shows the user that an ":else" or ":elseif" | |
| 1095 * is executed when the ":if" or previous ":elseif" was not TRUE. Handle | |
| 1096 * a ">quit" debug command as if an interrupt had occurred before the | |
| 1097 * ":else" or ":elseif". That is, set "skip" and throw an interrupt | |
| 1098 * exception if appropriate. Doing this here prevents that an exception | |
| 1099 * for a parsing errors is discarded when throwing the interrupt exception | |
| 1100 * later on. | |
| 1101 */ | |
| 1102 if (!skip && dbg_check_skipped(eap) && got_int) | |
| 1103 { | |
| 1104 (void)do_intthrow(cstack); | |
| 1105 skip = TRUE; | |
| 1106 } | |
| 1107 | |
| 1108 if (eap->cmdidx == CMD_elseif) | |
| 1109 { | |
|
20996
3af71cbcfdbe
patch 8.2.1049: Vim9: leaking memory when using continuation line
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1110 result = eval_to_bool(eap->arg, &error, eap, skip); |
|
20113
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
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|
1111 |
|
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|
1112 // When throwing error exceptions, we want to throw always the first |
|
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|
1113 // of several errors in a row. This is what actually happens when |
|
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|
1114 // a conditional error was detected above and there is another failure |
|
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|
1115 // when parsing the expression. Since the skip flag is set in this |
|
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|
1116 // case, the parsing error will be ignored by emsg(). |
| 7 | 1117 if (!skip && !error) |
| 1118 { | |
| 1119 if (result) | |
| 1120 cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE | CSF_TRUE; | |
| 1121 else | |
| 1122 cstack->cs_flags[cstack->cs_idx] = 0; | |
| 1123 } | |
| 1124 else if (eap->errmsg == NULL) | |
|
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|
1125 // set TRUE, so this conditional will never get active |
| 7 | 1126 cstack->cs_flags[cstack->cs_idx] = CSF_TRUE; |
| 1127 } | |
| 1128 else | |
| 1129 cstack->cs_flags[cstack->cs_idx] |= CSF_ELSE; | |
| 1130 } | |
| 1131 | |
| 1132 /* | |
| 75 | 1133 * Handle ":while" and ":for". |
| 7 | 1134 */ |
| 1135 void | |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
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7801
diff
changeset
|
1136 ex_while(exarg_T *eap) |
| 7 | 1137 { |
| 1138 int error; | |
| 1139 int skip; | |
| 1140 int result; | |
|
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|
1141 cstack_T *cstack = eap->cstack; |
| 7 | 1142 |
| 1143 if (cstack->cs_idx == CSTACK_LEN - 1) | |
|
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|
1144 eap->errmsg = _("E585: :while/:for nesting too deep"); |
| 7 | 1145 else |
| 1146 { | |
| 1147 /* | |
| 75 | 1148 * The loop flag is set when we have jumped back from the matching |
| 1149 * ":endwhile" or ":endfor". When not set, need to initialise this | |
| 1150 * cstack entry. | |
| 7 | 1151 */ |
| 75 | 1152 if ((cstack->cs_lflags & CSL_HAD_LOOP) == 0) |
| 7 | 1153 { |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
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|
1154 enter_block(cstack); |
| 75 | 1155 ++cstack->cs_looplevel; |
| 7 | 1156 cstack->cs_line[cstack->cs_idx] = -1; |
| 1157 } | |
|
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|
1158 else |
|
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|
1159 { |
|
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|
1160 if (in_vim9script() && SCRIPT_ID_VALID(current_sctx.sc_sid)) |
|
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|
1161 { |
|
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|
1162 scriptitem_T *si = SCRIPT_ITEM(current_sctx.sc_sid); |
|
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|
1163 int i; |
|
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|
1164 |
|
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|
1165 // Any variables defined in the previous round are no longer |
|
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|
1166 // visible. |
|
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|
1167 for (i = cstack->cs_script_var_len[cstack->cs_idx]; |
|
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|
1168 i < si->sn_var_vals.ga_len; ++i) |
|
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|
1169 { |
|
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|
1170 svar_T *sv = ((svar_T *)si->sn_var_vals.ga_data) + i; |
|
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|
1171 |
|
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|
1172 // sv_name is set to NULL if it was already removed. This |
|
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|
1173 // happens when it was defined in an inner block and no |
|
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|
1174 // functions were defined there. |
|
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|
1175 if (sv->sv_name != NULL) |
|
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|
1176 // Remove a variable declared inside the block, if it |
|
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|
1177 // still exists, from sn_vars. |
|
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|
1178 hide_script_var(si, i, FALSE); |
|
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|
1179 } |
|
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|
1180 cstack->cs_script_var_len[cstack->cs_idx] = |
|
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|
1181 si->sn_var_vals.ga_len; |
|
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|
1182 } |
|
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|
1183 } |
| 75 | 1184 cstack->cs_flags[cstack->cs_idx] = |
| 1185 eap->cmdidx == CMD_while ? CSF_WHILE : CSF_FOR; | |
| 7 | 1186 |
| 1187 /* | |
| 75 | 1188 * Don't do something after an error, interrupt, or throw, or when |
| 1189 * there is a surrounding conditional and it was not active. | |
| 7 | 1190 */ |
| 1191 skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0 | |
| 1192 && !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE)); | |
| 75 | 1193 if (eap->cmdidx == CMD_while) |
| 1194 { | |
| 1195 /* | |
| 1196 * ":while bool-expr" | |
| 1197 */ | |
|
20996
3af71cbcfdbe
patch 8.2.1049: Vim9: leaking memory when using continuation line
Bram Moolenaar <Bram@vim.org>
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20992
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changeset
|
1198 result = eval_to_bool(eap->arg, &error, eap, skip); |
| 75 | 1199 } |
| 1200 else | |
| 1201 { | |
|
21058
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patch 8.2.1080: Vim9: no line break allowed in a for loop
Bram Moolenaar <Bram@vim.org>
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|
1202 void *fi; |
|
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patch 8.2.1080: Vim9: no line break allowed in a for loop
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|
1203 evalarg_T evalarg; |
|
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|
1204 |
|
24232
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|
1205 /* |
|
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|
1206 * ":for var in list-expr" |
|
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|
1207 */ |
|
21058
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Bram Moolenaar <Bram@vim.org>
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|
1208 CLEAR_FIELD(evalarg); |
|
111f877e63d9
patch 8.2.1080: Vim9: no line break allowed in a for loop
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|
1209 evalarg.eval_flags = skip ? 0 : EVAL_EVALUATE; |
|
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|
1210 if (getline_equal(eap->getline, eap->cookie, getsourceline)) |
|
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|
1211 { |
|
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changeset
|
1212 evalarg.eval_getline = eap->getline; |
|
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patch 8.2.1080: Vim9: no line break allowed in a for loop
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changeset
|
1213 evalarg.eval_cookie = eap->cookie; |
|
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patch 8.2.1080: Vim9: no line break allowed in a for loop
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diff
changeset
|
1214 } |
| 75 | 1215 |
| 1216 if ((cstack->cs_lflags & CSL_HAD_LOOP) != 0) | |
| 1217 { | |
|
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parents:
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changeset
|
1218 // Jumping here from a ":continue" or ":endfor": use the |
|
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patch 8.1.2379: using old C style comments
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changeset
|
1219 // previously evaluated list. |
| 79 | 1220 fi = cstack->cs_forinfo[cstack->cs_idx]; |
| 75 | 1221 error = FALSE; |
|
21058
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patch 8.2.1080: Vim9: no line break allowed in a for loop
Bram Moolenaar <Bram@vim.org>
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changeset
|
1222 |
|
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patch 8.2.1080: Vim9: no line break allowed in a for loop
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1223 // the "in expr" is not used, skip over it |
|
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patch 8.2.1080: Vim9: no line break allowed in a for loop
Bram Moolenaar <Bram@vim.org>
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changeset
|
1224 skip_for_lines(fi, &evalarg); |
| 75 | 1225 } |
| 1226 else | |
| 1227 { | |
|
25180
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patch 8.2.3126: Vim9: for loop error reports wrong line number
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diff
changeset
|
1228 long save_lnum = SOURCING_LNUM; |
|
6523cd41fa54
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|
1229 |
|
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|
1230 // Evaluate the argument and get the info in a structure. |
|
21058
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1231 fi = eval_for_line(eap->arg, &error, eap, &evalarg); |
| 79 | 1232 cstack->cs_forinfo[cstack->cs_idx] = fi; |
|
25180
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diff
changeset
|
1233 |
|
6523cd41fa54
patch 8.2.3126: Vim9: for loop error reports wrong line number
Bram Moolenaar <Bram@vim.org>
parents:
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changeset
|
1234 // Errors should use the first line number. |
|
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patch 8.2.3126: Vim9: for loop error reports wrong line number
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changeset
|
1235 SOURCING_LNUM = save_lnum; |
| 75 | 1236 } |
| 1237 | |
|
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changeset
|
1238 // use the element at the start of the list and advance |
| 75 | 1239 if (!error && fi != NULL && !skip) |
| 1240 result = next_for_item(fi, eap->arg); | |
| 1241 else | |
| 1242 result = FALSE; | |
| 1243 | |
| 1244 if (!result) | |
| 1245 { | |
| 1246 free_for_info(fi); | |
| 79 | 1247 cstack->cs_forinfo[cstack->cs_idx] = NULL; |
| 75 | 1248 } |
|
21058
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changeset
|
1249 clear_evalarg(&evalarg, eap); |
| 75 | 1250 } |
| 7 | 1251 |
| 1252 /* | |
| 75 | 1253 * If this cstack entry was just initialised and is active, set the |
| 1254 * loop flag, so do_cmdline() will set the line number in cs_line[]. | |
| 1255 * If executing the command a second time, clear the loop flag. | |
| 7 | 1256 */ |
| 1257 if (!skip && !error && result) | |
| 1258 { | |
| 75 | 1259 cstack->cs_flags[cstack->cs_idx] |= (CSF_ACTIVE | CSF_TRUE); |
| 1260 cstack->cs_lflags ^= CSL_HAD_LOOP; | |
| 7 | 1261 } |
| 1262 else | |
| 1263 { | |
| 75 | 1264 cstack->cs_lflags &= ~CSL_HAD_LOOP; |
|
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|
1265 // If the ":while" evaluates to FALSE or ":for" is past the end of |
|
8f05b3cf8557
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diff
changeset
|
1266 // the list, show the debug prompt at the ":endwhile"/":endfor" as |
|
8f05b3cf8557
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changeset
|
1267 // if there was a ":break" in a ":while"/":for" evaluating to |
|
8f05b3cf8557
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changeset
|
1268 // TRUE. |
| 7 | 1269 if (!skip && !error) |
| 1270 cstack->cs_flags[cstack->cs_idx] |= CSF_TRUE; | |
| 1271 } | |
| 1272 } | |
| 1273 } | |
| 1274 | |
| 1275 /* | |
| 1276 * ":continue" | |
| 1277 */ | |
| 1278 void | |
|
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Christian Brabandt <cb@256bit.org>
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7801
diff
changeset
|
1279 ex_continue(exarg_T *eap) |
| 7 | 1280 { |
| 1281 int idx; | |
|
18904
2bdc2e1f6e1f
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changeset
|
1282 cstack_T *cstack = eap->cstack; |
| 7 | 1283 |
| 75 | 1284 if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0) |
|
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|
1285 eap->errmsg = _(e_continue); |
| 7 | 1286 else |
| 1287 { | |
|
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|
1288 // Try to find the matching ":while". This might stop at a try |
|
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diff
changeset
|
1289 // conditional not in its finally clause (which is then to be executed |
|
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|
1290 // next). Therefor, inactivate all conditionals except the ":while" |
|
8f05b3cf8557
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changeset
|
1291 // itself (if reached). |
| 75 | 1292 idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, FALSE); |
| 840 | 1293 if (idx >= 0 && (cstack->cs_flags[idx] & (CSF_WHILE | CSF_FOR))) |
| 7 | 1294 { |
| 79 | 1295 rewind_conditionals(cstack, idx, CSF_TRY, &cstack->cs_trylevel); |
| 7 | 1296 |
| 1297 /* | |
| 75 | 1298 * Set CSL_HAD_CONT, so do_cmdline() will jump back to the |
| 7 | 1299 * matching ":while". |
| 1300 */ | |
|
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|
1301 cstack->cs_lflags |= CSL_HAD_CONT; // let do_cmdline() handle it |
| 7 | 1302 } |
| 1303 else | |
| 1304 { | |
|
18779
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changeset
|
1305 // If a try conditional not in its finally clause is reached first, |
|
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|
1306 // make the ":continue" pending for execution at the ":endtry". |
| 7 | 1307 cstack->cs_pending[idx] = CSTP_CONTINUE; |
| 1308 report_make_pending(CSTP_CONTINUE, NULL); | |
| 1309 } | |
| 1310 } | |
| 1311 } | |
| 1312 | |
| 1313 /* | |
| 1314 * ":break" | |
| 1315 */ | |
| 1316 void | |
|
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1317 ex_break(exarg_T *eap) |
| 7 | 1318 { |
| 1319 int idx; | |
|
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|
1320 cstack_T *cstack = eap->cstack; |
| 7 | 1321 |
| 75 | 1322 if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0) |
|
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|
1323 eap->errmsg = _(e_break); |
| 7 | 1324 else |
| 1325 { | |
|
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|
1326 // Inactivate conditionals until the matching ":while" or a try |
|
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|
1327 // conditional not in its finally clause (which is then to be |
|
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|
1328 // executed next) is found. In the latter case, make the ":break" |
|
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|
1329 // pending for execution at the ":endtry". |
| 75 | 1330 idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, TRUE); |
| 840 | 1331 if (idx >= 0 && !(cstack->cs_flags[idx] & (CSF_WHILE | CSF_FOR))) |
| 7 | 1332 { |
| 1333 cstack->cs_pending[idx] = CSTP_BREAK; | |
| 1334 report_make_pending(CSTP_BREAK, NULL); | |
| 1335 } | |
| 1336 } | |
| 1337 } | |
| 1338 | |
| 1339 /* | |
| 75 | 1340 * ":endwhile" and ":endfor" |
| 7 | 1341 */ |
| 1342 void | |
|
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diff
changeset
|
1343 ex_endwhile(exarg_T *eap) |
| 7 | 1344 { |
|
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|
1345 cstack_T *cstack = eap->cstack; |
|
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changeset
|
1346 int idx; |
|
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changeset
|
1347 char *err; |
|
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|
1348 int csf; |
|
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|
1349 int fl; |
| 7 | 1350 |
|
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patch 8.2.2652: Vim9: can use command modifier without an effect
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changeset
|
1351 if (cmdmod_error()) |
|
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patch 8.2.2652: Vim9: can use command modifier without an effect
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1352 return; |
|
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|
1353 |
| 75 | 1354 if (eap->cmdidx == CMD_endwhile) |
| 1355 { | |
| 1356 err = e_while; | |
| 1357 csf = CSF_WHILE; | |
| 1358 } | |
| 1359 else | |
| 1360 { | |
| 1361 err = e_for; | |
| 1362 csf = CSF_FOR; | |
| 1363 } | |
| 1364 | |
| 1365 if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0) | |
|
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|
1366 eap->errmsg = _(err); |
| 7 | 1367 else |
| 1368 { | |
| 75 | 1369 fl = cstack->cs_flags[cstack->cs_idx]; |
| 1370 if (!(fl & csf)) | |
| 7 | 1371 { |
|
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1372 // If we are in a ":while" or ":for" but used the wrong endloop |
|
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1373 // command, do not rewind to the next enclosing ":for"/":while". |
| 75 | 1374 if (fl & CSF_WHILE) |
|
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1375 eap->errmsg = _("E732: Using :endfor with :while"); |
| 75 | 1376 else if (fl & CSF_FOR) |
|
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1377 eap->errmsg = _("E733: Using :endwhile with :for"); |
| 114 | 1378 } |
| 1379 if (!(fl & (CSF_WHILE | CSF_FOR))) | |
| 1380 { | |
| 1381 if (!(fl & CSF_TRY)) | |
|
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1382 eap->errmsg = _(e_endif); |
| 75 | 1383 else if (fl & CSF_FINALLY) |
|
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|
1384 eap->errmsg = _(e_endtry); |
|
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|
1385 // Try to find the matching ":while" and report what's missing. |
| 7 | 1386 for (idx = cstack->cs_idx; idx > 0; --idx) |
| 1387 { | |
| 75 | 1388 fl = cstack->cs_flags[idx]; |
| 1389 if ((fl & CSF_TRY) && !(fl & CSF_FINALLY)) | |
| 7 | 1390 { |
|
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|
1391 // Give up at a try conditional not in its finally clause. |
|
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1392 // Ignore the ":endwhile"/":endfor". |
|
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1393 eap->errmsg = _(err); |
| 7 | 1394 return; |
| 1395 } | |
| 75 | 1396 if (fl & csf) |
| 7 | 1397 break; |
| 1398 } | |
|
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|
1399 // Cleanup and rewind all contained (and unclosed) conditionals. |
| 75 | 1400 (void)cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, FALSE); |
| 7 | 1401 rewind_conditionals(cstack, idx, CSF_TRY, &cstack->cs_trylevel); |
| 1402 } | |
| 1403 | |
| 1404 /* | |
| 1405 * When debugging or a breakpoint was encountered, display the debug | |
| 1406 * prompt (if not already done). This shows the user that an | |
| 75 | 1407 * ":endwhile"/":endfor" is executed when the ":while" was not TRUE or |
| 1408 * after a ":break". Handle a ">quit" debug command as if an | |
| 1409 * interrupt had occurred before the ":endwhile"/":endfor". That is, | |
| 1410 * throw an interrupt exception if appropriate. Doing this here | |
| 1411 * prevents that an exception for a parsing error is discarded when | |
| 1412 * throwing the interrupt exception later on. | |
| 7 | 1413 */ |
| 1414 else if (cstack->cs_flags[cstack->cs_idx] & CSF_TRUE | |
| 1415 && !(cstack->cs_flags[cstack->cs_idx] & CSF_ACTIVE) | |
| 1416 && dbg_check_skipped(eap)) | |
| 1417 (void)do_intthrow(cstack); | |
| 1418 | |
|
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patch 8.2.2657: Vim9: error message for declaring variable in for loop
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|
1419 // Set loop flag, so do_cmdline() will jump back to the matching |
|
3058ed6db36f
patch 8.2.2657: Vim9: error message for declaring variable in for loop
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changeset
|
1420 // ":while" or ":for". |
| 75 | 1421 cstack->cs_lflags |= CSL_HAD_ENDLOOP; |
| 7 | 1422 } |
| 1423 } | |
| 1424 | |
|
22555
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patch 8.2.1826: Vim9: cannot use a {} block at script level
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|
1425 /* |
|
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|
1426 * "{" start of a block in Vim9 script |
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1427 */ |
|
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|
1428 void |
|
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|
1429 ex_block(exarg_T *eap) |
|
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1430 { |
|
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|
1431 cstack_T *cstack = eap->cstack; |
|
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1432 |
|
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|
1433 if (cstack->cs_idx == CSTACK_LEN - 1) |
|
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|
1434 eap->errmsg = _("E579: block nesting too deep"); |
|
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|
1435 else |
|
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1436 { |
|
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|
1437 enter_block(cstack); |
|
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|
1438 cstack->cs_flags[cstack->cs_idx] = CSF_BLOCK | CSF_ACTIVE | CSF_TRUE; |
|
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|
1439 } |
|
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|
1440 } |
|
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|
1441 |
|
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|
1442 /* |
|
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patch 8.2.1826: Vim9: cannot use a {} block at script level
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|
1443 * "}" end of a block in Vim9 script |
|
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1444 */ |
|
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1445 void |
|
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patch 8.2.1826: Vim9: cannot use a {} block at script level
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|
1446 ex_endblock(exarg_T *eap) |
|
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|
1447 { |
|
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|
1448 cstack_T *cstack = eap->cstack; |
|
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|
1449 |
|
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|
1450 if (cstack->cs_idx < 0 |
|
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|
1451 || (cstack->cs_flags[cstack->cs_idx] & CSF_BLOCK) == 0) |
|
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diff
changeset
|
1452 eap->errmsg = _(e_endblock_without_block); |
|
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|
1453 else |
|
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|
1454 leave_block(cstack); |
|
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|
1455 } |
| 7 | 1456 |
| 1457 /* | |
| 1458 * ":throw expr" | |
| 1459 */ | |
| 1460 void | |
|
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diff
changeset
|
1461 ex_throw(exarg_T *eap) |
| 7 | 1462 { |
| 1463 char_u *arg = eap->arg; | |
| 1464 char_u *value; | |
| 1465 | |
| 1466 if (*arg != NUL && *arg != '|' && *arg != '\n') | |
|
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|
1467 value = eval_to_string_skip(arg, eap, eap->skip); |
| 7 | 1468 else |
| 1469 { | |
|
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|
1470 emsg(_(e_argreq)); |
| 7 | 1471 value = NULL; |
| 1472 } | |
| 1473 | |
|
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|
1474 // On error or when an exception is thrown during argument evaluation, do |
|
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changeset
|
1475 // not throw. |
| 7 | 1476 if (!eap->skip && value != NULL) |
| 1477 { | |
| 1478 if (throw_exception(value, ET_USER, NULL) == FAIL) | |
| 1479 vim_free(value); | |
| 1480 else | |
| 1481 do_throw(eap->cstack); | |
| 1482 } | |
| 1483 } | |
| 1484 | |
| 1485 /* | |
| 21 | 1486 * Throw the current exception through the specified cstack. Common routine |
| 1487 * for ":throw" (user exception) and error and interrupt exceptions. Also | |
| 1488 * used for rethrowing an uncaught exception. | |
| 7 | 1489 */ |
| 1490 void | |
|
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|
1491 do_throw(cstack_T *cstack) |
| 7 | 1492 { |
| 1493 int idx; | |
| 1494 int inactivate_try = FALSE; | |
| 1495 | |
| 1496 /* | |
| 1497 * Cleanup and inactivate up to the next surrounding try conditional that | |
| 1498 * is not in its finally clause. Normally, do not inactivate the try | |
| 1499 * conditional itself, so that its ACTIVE flag can be tested below. But | |
| 1500 * if a previous error or interrupt has not been converted to an exception, | |
| 1501 * inactivate the try conditional, too, as if the conversion had been done, | |
| 21 | 1502 * and reset the did_emsg or got_int flag, so this won't happen again at |
| 1503 * the next surrounding try conditional. | |
| 7 | 1504 */ |
| 1880 | 1505 #ifndef THROW_ON_ERROR_TRUE |
| 7 | 1506 if (did_emsg && !THROW_ON_ERROR) |
| 1507 { | |
| 1508 inactivate_try = TRUE; | |
| 1509 did_emsg = FALSE; | |
| 1510 } | |
| 1880 | 1511 #endif |
| 1512 #ifndef THROW_ON_INTERRUPT_TRUE | |
| 7 | 1513 if (got_int && !THROW_ON_INTERRUPT) |
| 1514 { | |
| 1515 inactivate_try = TRUE; | |
| 1516 got_int = FALSE; | |
| 1517 } | |
| 1880 | 1518 #endif |
| 7 | 1519 idx = cleanup_conditionals(cstack, 0, inactivate_try); |
| 1520 if (idx >= 0) | |
| 1521 { | |
| 1522 /* | |
| 1523 * If this try conditional is active and we are before its first | |
| 21 | 1524 * ":catch", set THROWN so that the ":catch" commands will check |
| 1525 * whether the exception matches. When the exception came from any of | |
| 1526 * the catch clauses, it will be made pending at the ":finally" (if | |
| 1527 * present) and rethrown at the ":endtry". This will also happen if | |
| 1528 * the try conditional is inactive. This is the case when we are | |
| 1529 * throwing an exception due to an error or interrupt on the way from | |
| 1530 * a preceding ":continue", ":break", ":return", ":finish", error or | |
| 1531 * interrupt (not converted to an exception) to the finally clause or | |
| 1532 * from a preceding throw of a user or error or interrupt exception to | |
| 1533 * the matching catch clause or the finally clause. | |
| 7 | 1534 */ |
| 1535 if (!(cstack->cs_flags[idx] & CSF_CAUGHT)) | |
| 1536 { | |
| 1537 if (cstack->cs_flags[idx] & CSF_ACTIVE) | |
| 1538 cstack->cs_flags[idx] |= CSF_THROWN; | |
| 1539 else | |
|
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changeset
|
1540 // THROWN may have already been set for a catchable exception |
|
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parents:
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diff
changeset
|
1541 // that has been discarded. Ensure it is reset for the new |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1542 // exception. |
| 7 | 1543 cstack->cs_flags[idx] &= ~CSF_THROWN; |
| 1544 } | |
| 1545 cstack->cs_flags[idx] &= ~CSF_ACTIVE; | |
| 1546 cstack->cs_exception[idx] = current_exception; | |
| 1547 } | |
| 1548 #if 0 | |
|
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1549 // TODO: Add optimization below. Not yet done because of interface |
|
8f05b3cf8557
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Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1550 // problems to eval.c and ex_cmds2.c. (Servatius) |
| 7 | 1551 else |
| 1552 { | |
| 1553 /* | |
| 1554 * There are no catch clauses to check or finally clauses to execute. | |
| 1555 * End the current script or function. The exception will be rethrown | |
| 1556 * in the caller. | |
| 1557 */ | |
| 1558 if (getline_equal(eap->getline, eap->cookie, get_func_line)) | |
| 1559 current_funccal->returned = TRUE; | |
| 1560 elseif (eap->get_func_line == getsourceline) | |
| 1561 ((struct source_cookie *)eap->cookie)->finished = TRUE; | |
| 1562 } | |
| 1563 #endif | |
| 1564 | |
| 1565 did_throw = TRUE; | |
| 1566 } | |
| 1567 | |
| 1568 /* | |
| 1569 * ":try" | |
| 1570 */ | |
| 1571 void | |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
1572 ex_try(exarg_T *eap) |
| 7 | 1573 { |
| 1574 int skip; | |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1575 cstack_T *cstack = eap->cstack; |
| 7 | 1576 |
|
24222
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1577 if (cmdmod_error()) |
|
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1578 return; |
|
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patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1579 |
| 7 | 1580 if (cstack->cs_idx == CSTACK_LEN - 1) |
|
21459
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patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1581 eap->errmsg = _("E601: :try nesting too deep"); |
| 7 | 1582 else |
| 1583 { | |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
22208
diff
changeset
|
1584 enter_block(cstack); |
| 7 | 1585 ++cstack->cs_trylevel; |
| 1586 cstack->cs_flags[cstack->cs_idx] = CSF_TRY; | |
| 1587 cstack->cs_pending[cstack->cs_idx] = CSTP_NONE; | |
| 1588 | |
| 1589 /* | |
| 1590 * Don't do something after an error, interrupt, or throw, or when there | |
| 1591 * is a surrounding conditional and it was not active. | |
| 1592 */ | |
| 1593 skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0 | |
| 1594 && !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE)); | |
| 1595 | |
| 1596 if (!skip) | |
| 1597 { | |
|
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1598 // Set ACTIVE and TRUE. TRUE means that the corresponding ":catch" |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1599 // commands should check for a match if an exception is thrown and |
|
8f05b3cf8557
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Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1600 // that the finally clause needs to be executed. |
| 7 | 1601 cstack->cs_flags[cstack->cs_idx] |= CSF_ACTIVE | CSF_TRUE; |
| 1602 | |
| 1603 /* | |
| 1604 * ":silent!", even when used in a try conditional, disables | |
| 1605 * displaying of error messages and conversion of errors to | |
| 1606 * exceptions. When the silent commands again open a try | |
| 1607 * conditional, save "emsg_silent" and reset it so that errors are | |
| 1608 * again converted to exceptions. The value is restored when that | |
| 1609 * try conditional is left. If it is left normally, the commands | |
| 1610 * following the ":endtry" are again silent. If it is left by | |
| 1611 * a ":continue", ":break", ":return", or ":finish", the commands | |
| 1612 * executed next are again silent. If it is left due to an | |
| 1613 * aborting error, an interrupt, or an exception, restoring | |
| 1614 * "emsg_silent" does not matter since we are already in the | |
| 1615 * aborting state and/or the exception has already been thrown. | |
| 1616 * The effect is then just freeing the memory that was allocated | |
| 1617 * to save the value. | |
| 1618 */ | |
| 1619 if (emsg_silent) | |
| 1620 { | |
| 1621 eslist_T *elem; | |
| 1622 | |
|
16825
ce04ebdf26b8
patch 8.1.1414: alloc() returning "char_u *" causes a lot of type casts
Bram Moolenaar <Bram@vim.org>
parents:
16764
diff
changeset
|
1623 elem = ALLOC_ONE(struct eslist_elem); |
| 7 | 1624 if (elem == NULL) |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
1625 emsg(_(e_outofmem)); |
| 7 | 1626 else |
| 1627 { | |
| 1628 elem->saved_emsg_silent = emsg_silent; | |
| 1629 elem->next = cstack->cs_emsg_silent_list; | |
| 1630 cstack->cs_emsg_silent_list = elem; | |
| 1631 cstack->cs_flags[cstack->cs_idx] |= CSF_SILENT; | |
| 1632 emsg_silent = 0; | |
| 1633 } | |
| 1634 } | |
| 1635 } | |
| 1636 | |
| 1637 } | |
| 1638 } | |
| 1639 | |
| 1640 /* | |
| 1641 * ":catch /{pattern}/" and ":catch" | |
| 1642 */ | |
| 1643 void | |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
1644 ex_catch(exarg_T *eap) |
| 7 | 1645 { |
| 1646 int idx = 0; | |
| 1647 int give_up = FALSE; | |
| 1648 int skip = FALSE; | |
| 1649 int caught = FALSE; | |
| 1650 char_u *end; | |
| 1651 int save_char = 0; | |
| 1652 char_u *save_cpo; | |
| 1653 regmatch_T regmatch; | |
| 1654 int prev_got_int; | |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
parents:
18779
diff
changeset
|
1655 cstack_T *cstack = eap->cstack; |
| 7 | 1656 char_u *pat; |
| 1657 | |
|
24222
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1658 if (cmdmod_error()) |
|
a2e6029d354e
patch 8.2.2652: Vim9: can use command modifier without an effect
Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1659 return; |
|
a2e6029d354e
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Bram Moolenaar <Bram@vim.org>
parents:
24022
diff
changeset
|
1660 |
| 7 | 1661 if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0) |
| 1662 { | |
|
21459
a422bd80b434
patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
21118
diff
changeset
|
1663 eap->errmsg = _(e_catch); |
| 7 | 1664 give_up = TRUE; |
| 1665 } | |
| 1666 else | |
| 1667 { | |
| 1668 if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY)) | |
| 1669 { | |
|
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Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1670 // Report what's missing if the matching ":try" is not in its |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1671 // finally clause. |
| 75 | 1672 eap->errmsg = get_end_emsg(cstack); |
| 7 | 1673 skip = TRUE; |
| 1674 } | |
| 1675 for (idx = cstack->cs_idx; idx > 0; --idx) | |
| 1676 if (cstack->cs_flags[idx] & CSF_TRY) | |
| 1677 break; | |
|
25124
075790758d11
patch 8.2.3099: Vim9: missing catch/finally not reported at script level
Bram Moolenaar <Bram@vim.org>
parents:
24369
diff
changeset
|
1678 if (cstack->cs_flags[idx] & CSF_TRY) |
|
075790758d11
patch 8.2.3099: Vim9: missing catch/finally not reported at script level
Bram Moolenaar <Bram@vim.org>
parents:
24369
diff
changeset
|
1679 cstack->cs_flags[idx] |= CSF_CATCH; |
| 7 | 1680 if (cstack->cs_flags[idx] & CSF_FINALLY) |
| 1681 { | |
|
18779
8f05b3cf8557
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parents:
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diff
changeset
|
1682 // Give up for a ":catch" after ":finally" and ignore it. |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1683 // Just parse. |
|
21459
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patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
21118
diff
changeset
|
1684 eap->errmsg = _("E604: :catch after :finally"); |
| 7 | 1685 give_up = TRUE; |
| 1686 } | |
| 79 | 1687 else |
| 75 | 1688 rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR, |
| 1689 &cstack->cs_looplevel); | |
| 7 | 1690 } |
| 1691 | |
|
20113
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1692 if (ends_excmd2(eap->cmd, eap->arg)) // no argument, catch all errors |
| 7 | 1693 { |
| 1694 pat = (char_u *)".*"; | |
| 1695 end = NULL; | |
| 1696 eap->nextcmd = find_nextcmd(eap->arg); | |
| 1697 } | |
| 1698 else | |
| 1699 { | |
| 1700 pat = eap->arg + 1; | |
|
20113
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Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1701 end = skip_regexp_err(pat, *eap->arg, TRUE); |
|
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1702 if (end == NULL) |
|
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1703 give_up = TRUE; |
| 7 | 1704 } |
| 1705 | |
| 1706 if (!give_up) | |
| 1707 { | |
| 1708 /* | |
| 1709 * Don't do something when no exception has been thrown or when the | |
| 1710 * corresponding try block never got active (because of an inactive | |
| 1711 * surrounding conditional or after an error or interrupt or throw). | |
| 1712 */ | |
| 1713 if (!did_throw || !(cstack->cs_flags[idx] & CSF_TRUE)) | |
| 1714 skip = TRUE; | |
| 1715 | |
| 1716 /* | |
| 1717 * Check for a match only if an exception is thrown but not caught by | |
| 1718 * a previous ":catch". An exception that has replaced a discarded | |
| 1719 * exception is not checked (THROWN is not set then). | |
| 1720 */ | |
| 1721 if (!skip && (cstack->cs_flags[idx] & CSF_THROWN) | |
| 1722 && !(cstack->cs_flags[idx] & CSF_CAUGHT)) | |
| 1723 { | |
|
20113
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1724 if (end != NULL && *end != NUL |
|
2c23053c654a
patch 8.2.0612: Vim9: no check for space before #comment
Bram Moolenaar <Bram@vim.org>
parents:
20029
diff
changeset
|
1725 && !ends_excmd2(end, skipwhite(end + 1))) |
| 7 | 1726 { |
|
21461
4dfd00f481fb
patch 8.2.1281: the "trailing characters" error can be hard to understand
Bram Moolenaar <Bram@vim.org>
parents:
21459
diff
changeset
|
1727 semsg(_(e_trailing_arg), end); |
| 7 | 1728 return; |
| 1729 } | |
| 1730 | |
|
18779
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patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1731 // When debugging or a breakpoint was encountered, display the |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1732 // debug prompt (if not already done) before checking for a match. |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1733 // This is a helpful hint for the user when the regular expression |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1734 // matching fails. Handle a ">quit" debug command as if an |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1735 // interrupt had occurred before the ":catch". That is, discard |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1736 // the original exception, replace it by an interrupt exception, |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
1737 // and don't catch it in this try block. |
| 7 | 1738 if (!dbg_check_skipped(eap) || !do_intthrow(cstack)) |
| 1739 { | |
|
18779
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parents:
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diff
changeset
|
1740 // Terminate the pattern and avoid the 'l' flag in 'cpoptions' |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1741 // while compiling it. |
| 7 | 1742 if (end != NULL) |
| 1743 { | |
| 1744 save_char = *end; | |
| 1745 *end = NUL; | |
| 1746 } | |
| 1747 save_cpo = p_cpo; | |
|
23493
f8382c4e6551
patch 8.2.2289: Vim9: 'cpo' can become empty
Bram Moolenaar <Bram@vim.org>
parents:
23235
diff
changeset
|
1748 p_cpo = empty_option; |
|
18779
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diff
changeset
|
1749 // Disable error messages, it will make current_exception |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1750 // invalid. |
|
7973
00344cd730f6
commit https://github.com/vim/vim/commit/768ce2435ae956041579ef2d26e3e9d3a2444e1e
Christian Brabandt <cb@256bit.org>
parents:
7819
diff
changeset
|
1751 ++emsg_off; |
| 1333 | 1752 regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING); |
|
7973
00344cd730f6
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Christian Brabandt <cb@256bit.org>
parents:
7819
diff
changeset
|
1753 --emsg_off; |
| 7 | 1754 regmatch.rm_ic = FALSE; |
| 1755 if (end != NULL) | |
| 1756 *end = save_char; | |
| 1757 p_cpo = save_cpo; | |
| 1758 if (regmatch.regprog == NULL) | |
|
15470
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patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
1759 semsg(_(e_invarg2), pat); |
| 7 | 1760 else |
| 1761 { | |
| 1762 /* | |
| 1763 * Save the value of got_int and reset it. We don't want | |
| 1764 * a previous interruption cancel matching, only hitting | |
| 1765 * CTRL-C while matching should abort it. | |
| 1766 */ | |
| 1767 prev_got_int = got_int; | |
| 1768 got_int = FALSE; | |
|
15470
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patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
1769 caught = vim_regexec_nl(®match, |
|
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
1770 (char_u *)current_exception->value, (colnr_T)0); |
| 7 | 1771 got_int |= prev_got_int; |
|
4805
66803af09906
updated for version 7.3.1149
Bram Moolenaar <bram@vim.org>
parents:
4352
diff
changeset
|
1772 vim_regfree(regmatch.regprog); |
| 7 | 1773 } |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 if (caught) | |
| 1778 { | |
|
18779
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1779 // Make this ":catch" clause active and reset did_emsg, got_int, |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1780 // and did_throw. Put the exception on the caught stack. |
| 7 | 1781 cstack->cs_flags[idx] |= CSF_ACTIVE | CSF_CAUGHT; |
| 1782 did_emsg = got_int = did_throw = FALSE; | |
| 1783 catch_exception((except_T *)cstack->cs_exception[idx]); | |
|
18779
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parents:
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diff
changeset
|
1784 // It's mandatory that the current exception is stored in the cstack |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
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parents:
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diff
changeset
|
1785 // so that it can be discarded at the next ":catch", ":finally", or |
|
8f05b3cf8557
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parents:
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diff
changeset
|
1786 // ":endtry" or when the catch clause is left by a ":continue", |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1787 // ":break", ":return", ":finish", error, interrupt, or another |
|
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1788 // exception. |
| 7 | 1789 if (cstack->cs_exception[cstack->cs_idx] != current_exception) |
|
10359
66f1b5bf3fa6
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Christian Brabandt <cb@256bit.org>
parents:
10042
diff
changeset
|
1790 internal_error("ex_catch()"); |
| 7 | 1791 } |
| 1792 else | |
| 1793 { | |
| 1794 /* | |
| 1795 * If there is a preceding catch clause and it caught the exception, | |
| 1796 * finish the exception now. This happens also after errors except | |
| 1797 * when this ":catch" was after the ":finally" or not within | |
| 1798 * a ":try". Make the try conditional inactive so that the | |
| 1799 * following catch clauses are skipped. On an error or interrupt | |
| 1800 * after the preceding try block or catch clause was left by | |
| 1801 * a ":continue", ":break", ":return", or ":finish", discard the | |
| 1802 * pending action. | |
| 1803 */ | |
| 1804 cleanup_conditionals(cstack, CSF_TRY, TRUE); | |
| 1805 } | |
| 1806 } | |
| 1807 | |
| 1808 if (end != NULL) | |
| 1809 eap->nextcmd = find_nextcmd(end); | |
| 1810 } | |
| 1811 | |
| 1812 /* | |
| 1813 * ":finally" | |
| 1814 */ | |
| 1815 void | |
|
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1816 ex_finally(exarg_T *eap) |
| 7 | 1817 { |
| 1818 int idx; | |
| 1819 int skip = FALSE; | |
| 1820 int pending = CSTP_NONE; | |
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1821 cstack_T *cstack = eap->cstack; |
| 7 | 1822 |
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1823 if (cmdmod_error()) |
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1824 return; |
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1825 |
| 7 | 1826 if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0) |
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1827 eap->errmsg = _(e_finally); |
| 7 | 1828 else |
| 1829 { | |
| 1830 if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY)) | |
| 1831 { | |
| 75 | 1832 eap->errmsg = get_end_emsg(cstack); |
| 7 | 1833 for (idx = cstack->cs_idx - 1; idx > 0; --idx) |
| 1834 if (cstack->cs_flags[idx] & CSF_TRY) | |
| 1835 break; | |
|
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1836 // Make this error pending, so that the commands in the following |
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1837 // finally clause can be executed. This overrules also a pending |
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1838 // ":continue", ":break", ":return", or ":finish". |
| 7 | 1839 pending = CSTP_ERROR; |
| 1840 } | |
| 1841 else | |
| 1842 idx = cstack->cs_idx; | |
| 1843 | |
| 1844 if (cstack->cs_flags[idx] & CSF_FINALLY) | |
| 1845 { | |
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1846 // Give up for a multiple ":finally" and ignore it. |
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1847 eap->errmsg = _(e_finally_dup); |
| 7 | 1848 return; |
| 1849 } | |
| 79 | 1850 rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR, |
| 75 | 1851 &cstack->cs_looplevel); |
| 7 | 1852 |
| 1853 /* | |
| 1854 * Don't do something when the corresponding try block never got active | |
| 1855 * (because of an inactive surrounding conditional or after an error or | |
| 1856 * interrupt or throw) or for a ":finally" without ":try" or a multiple | |
| 1857 * ":finally". After every other error (did_emsg or the conditional | |
| 1858 * errors detected above) or after an interrupt (got_int) or an | |
| 1859 * exception (did_throw), the finally clause must be executed. | |
| 1860 */ | |
| 1861 skip = !(cstack->cs_flags[cstack->cs_idx] & CSF_TRUE); | |
| 1862 | |
| 1863 if (!skip) | |
| 1864 { | |
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1865 // When debugging or a breakpoint was encountered, display the |
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1866 // debug prompt (if not already done). The user then knows that the |
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1867 // finally clause is executed. |
| 7 | 1868 if (dbg_check_skipped(eap)) |
| 1869 { | |
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1870 // Handle a ">quit" debug command as if an interrupt had |
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1871 // occurred before the ":finally". That is, discard the |
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1872 // original exception and replace it by an interrupt |
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1873 // exception. |
| 7 | 1874 (void)do_intthrow(cstack); |
| 1875 } | |
| 1876 | |
| 1877 /* | |
| 1878 * If there is a preceding catch clause and it caught the exception, | |
| 1879 * finish the exception now. This happens also after errors except | |
| 1880 * when this is a multiple ":finally" or one not within a ":try". | |
| 1881 * After an error or interrupt, this also discards a pending | |
| 1882 * ":continue", ":break", ":finish", or ":return" from the preceding | |
| 1883 * try block or catch clause. | |
| 1884 */ | |
| 1885 cleanup_conditionals(cstack, CSF_TRY, FALSE); | |
| 1886 | |
| 1887 /* | |
| 1888 * Make did_emsg, got_int, did_throw pending. If set, they overrule | |
| 1889 * a pending ":continue", ":break", ":return", or ":finish". Then | |
| 1890 * we have particularly to discard a pending return value (as done | |
| 1891 * by the call to cleanup_conditionals() above when did_emsg or | |
| 1892 * got_int is set). The pending values are restored by the | |
| 1893 * ":endtry", except if there is a new error, interrupt, exception, | |
| 1894 * ":continue", ":break", ":return", or ":finish" in the following | |
| 75 | 1895 * finally clause. A missing ":endwhile", ":endfor" or ":endif" |
| 1896 * detected here is treated as if did_emsg and did_throw had | |
| 1897 * already been set, respectively in case that the error is not | |
| 1898 * converted to an exception, did_throw had already been unset. | |
| 1899 * We must not set did_emsg here since that would suppress the | |
| 1900 * error message. | |
| 7 | 1901 */ |
| 1902 if (pending == CSTP_ERROR || did_emsg || got_int || did_throw) | |
| 1903 { | |
| 1904 if (cstack->cs_pending[cstack->cs_idx] == CSTP_RETURN) | |
| 1905 { | |
| 1906 report_discard_pending(CSTP_RETURN, | |
| 68 | 1907 cstack->cs_rettv[cstack->cs_idx]); |
| 1908 discard_pending_return(cstack->cs_rettv[cstack->cs_idx]); | |
| 7 | 1909 } |
| 1910 if (pending == CSTP_ERROR && !did_emsg) | |
| 1911 pending |= (THROW_ON_ERROR) ? CSTP_THROW : 0; | |
| 1912 else | |
| 1913 pending |= did_throw ? CSTP_THROW : 0; | |
| 1914 pending |= did_emsg ? CSTP_ERROR : 0; | |
| 1915 pending |= got_int ? CSTP_INTERRUPT : 0; | |
| 1916 cstack->cs_pending[cstack->cs_idx] = pending; | |
| 1917 | |
|
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1918 // It's mandatory that the current exception is stored in the |
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1919 // cstack so that it can be rethrown at the ":endtry" or be |
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1920 // discarded if the finally clause is left by a ":continue", |
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1921 // ":break", ":return", ":finish", error, interrupt, or another |
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1922 // exception. When emsg() is called for a missing ":endif" or |
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1923 // a missing ":endwhile"/":endfor" detected here, the |
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1924 // exception will be discarded. |
| 79 | 1925 if (did_throw && cstack->cs_exception[cstack->cs_idx] |
| 1926 != current_exception) | |
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1927 internal_error("ex_finally()"); |
| 7 | 1928 } |
| 1929 | |
| 1930 /* | |
| 75 | 1931 * Set CSL_HAD_FINA, so do_cmdline() will reset did_emsg, |
| 22 | 1932 * got_int, and did_throw and make the finally clause active. |
| 1933 * This will happen after emsg() has been called for a missing | |
| 75 | 1934 * ":endif" or a missing ":endwhile"/":endfor" detected here, so |
| 1935 * that the following finally clause will be executed even then. | |
| 7 | 1936 */ |
| 75 | 1937 cstack->cs_lflags |= CSL_HAD_FINA; |
| 7 | 1938 } |
| 1939 } | |
| 1940 } | |
| 1941 | |
| 1942 /* | |
| 1943 * ":endtry" | |
| 1944 */ | |
| 1945 void | |
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1946 ex_endtry(exarg_T *eap) |
| 7 | 1947 { |
| 1948 int idx; | |
| 1949 int skip; | |
| 1950 int rethrow = FALSE; | |
| 1951 int pending = CSTP_NONE; | |
| 68 | 1952 void *rettv = NULL; |
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1953 cstack_T *cstack = eap->cstack; |
| 7 | 1954 |
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1955 if (cmdmod_error()) |
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1956 return; |
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1957 |
| 7 | 1958 if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0) |
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1959 eap->errmsg = _(e_no_endtry); |
| 7 | 1960 else |
| 1961 { | |
| 1962 /* | |
| 1963 * Don't do something after an error, interrupt or throw in the try | |
| 1964 * block, catch clause, or finally clause preceding this ":endtry" or | |
| 1965 * when an error or interrupt occurred after a ":continue", ":break", | |
| 1966 * ":return", or ":finish" in a try block or catch clause preceding this | |
| 1967 * ":endtry" or when the try block never got active (because of an | |
| 1968 * inactive surrounding conditional or after an error or interrupt or | |
| 1969 * throw) or when there is a surrounding conditional and it has been | |
| 1970 * made inactive by a ":continue", ":break", ":return", or ":finish" in | |
| 1971 * the finally clause. The latter case need not be tested since then | |
| 1972 * anything pending has already been discarded. */ | |
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1973 skip = did_emsg || got_int || did_throw |
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1974 || !(cstack->cs_flags[cstack->cs_idx] & CSF_TRUE); |
| 7 | 1975 |
| 1976 if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY)) | |
| 1977 { | |
| 75 | 1978 eap->errmsg = get_end_emsg(cstack); |
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1979 // Find the matching ":try" and report what's missing. |
| 7 | 1980 idx = cstack->cs_idx; |
| 1981 do | |
| 1982 --idx; | |
| 1983 while (idx > 0 && !(cstack->cs_flags[idx] & CSF_TRY)); | |
| 75 | 1984 rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR, |
| 1985 &cstack->cs_looplevel); | |
| 7 | 1986 skip = TRUE; |
| 1987 | |
| 1988 /* | |
| 1989 * If an exception is being thrown, discard it to prevent it from | |
| 1990 * being rethrown at the end of this function. It would be | |
| 1991 * discarded by the error message, anyway. Resets did_throw. | |
| 1992 * This does not affect the script termination due to the error | |
| 1993 * since "trylevel" is decremented after emsg() has been called. | |
| 1994 */ | |
| 1995 if (did_throw) | |
| 1996 discard_current_exception(); | |
| 1997 } | |
| 1998 else | |
| 1999 { | |
| 2000 idx = cstack->cs_idx; | |
| 2001 | |
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2002 if (in_vim9script() |
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2003 && (cstack->cs_flags[idx] & (CSF_CATCH|CSF_FINALLY)) == 0) |
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2004 { |
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2005 // try/endtry without any catch or finally: give an error and |
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2006 // continue. |
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2007 eap->errmsg = _(e_missing_catch_or_finally); |
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2008 } |
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2009 |
| 7 | 2010 /* |
| 2011 * If we stopped with the exception currently being thrown at this | |
| 2012 * try conditional since we didn't know that it doesn't have | |
| 2013 * a finally clause, we need to rethrow it after closing the try | |
| 2014 * conditional. | |
| 2015 */ | |
| 2016 if (did_throw && (cstack->cs_flags[idx] & CSF_TRUE) | |
| 2017 && !(cstack->cs_flags[idx] & CSF_FINALLY)) | |
| 2018 rethrow = TRUE; | |
| 2019 } | |
| 2020 | |
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2021 // If there was no finally clause, show the user when debugging or |
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2022 // a breakpoint was encountered that the end of the try conditional has |
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2023 // been reached: display the debug prompt (if not already done). Do |
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2024 // this on normal control flow or when an exception was thrown, but not |
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2025 // on an interrupt or error not converted to an exception or when |
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2026 // a ":break", ":continue", ":return", or ":finish" is pending. These |
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2027 // actions are carried out immediately. |
| 7 | 2028 if ((rethrow || (!skip |
| 2029 && !(cstack->cs_flags[idx] & CSF_FINALLY) | |
| 2030 && !cstack->cs_pending[idx])) | |
| 2031 && dbg_check_skipped(eap)) | |
| 2032 { | |
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2033 // Handle a ">quit" debug command as if an interrupt had occurred |
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2034 // before the ":endtry". That is, throw an interrupt exception and |
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2035 // set "skip" and "rethrow". |
| 7 | 2036 if (got_int) |
| 2037 { | |
| 2038 skip = TRUE; | |
| 2039 (void)do_intthrow(cstack); | |
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2040 // The do_intthrow() call may have reset did_throw or |
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2041 // cstack->cs_pending[idx]. |
| 7 | 2042 rethrow = FALSE; |
| 2043 if (did_throw && !(cstack->cs_flags[idx] & CSF_FINALLY)) | |
| 2044 rethrow = TRUE; | |
| 2045 } | |
| 2046 } | |
| 2047 | |
| 2048 /* | |
| 2049 * If a ":return" is pending, we need to resume it after closing the | |
| 2050 * try conditional; remember the return value. If there was a finally | |
| 2051 * clause making an exception pending, we need to rethrow it. Make it | |
| 2052 * the exception currently being thrown. | |
| 2053 */ | |
| 2054 if (!skip) | |
| 2055 { | |
| 2056 pending = cstack->cs_pending[idx]; | |
| 2057 cstack->cs_pending[idx] = CSTP_NONE; | |
| 2058 if (pending == CSTP_RETURN) | |
| 68 | 2059 rettv = cstack->cs_rettv[idx]; |
| 7 | 2060 else if (pending & CSTP_THROW) |
| 2061 current_exception = cstack->cs_exception[idx]; | |
| 2062 } | |
| 2063 | |
| 2064 /* | |
| 2065 * Discard anything pending on an error, interrupt, or throw in the | |
| 2066 * finally clause. If there was no ":finally", discard a pending | |
| 2067 * ":continue", ":break", ":return", or ":finish" if an error or | |
| 2068 * interrupt occurred afterwards, but before the ":endtry" was reached. | |
| 2069 * If an exception was caught by the last of the catch clauses and there | |
| 2070 * was no finally clause, finish the exception now. This happens also | |
| 2071 * after errors except when this ":endtry" is not within a ":try". | |
| 2072 * Restore "emsg_silent" if it has been reset by this try conditional. | |
| 2073 */ | |
| 840 | 2074 (void)cleanup_conditionals(cstack, CSF_TRY | CSF_SILENT, TRUE); |
| 7 | 2075 |
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2076 leave_block(cstack); |
| 7 | 2077 --cstack->cs_trylevel; |
| 2078 | |
| 2079 if (!skip) | |
| 2080 { | |
| 2081 report_resume_pending(pending, | |
| 68 | 2082 (pending == CSTP_RETURN) ? rettv : |
| 7 | 2083 (pending & CSTP_THROW) ? (void *)current_exception : NULL); |
| 2084 switch (pending) | |
| 2085 { | |
| 2086 case CSTP_NONE: | |
| 2087 break; | |
| 2088 | |
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2089 // Reactivate a pending ":continue", ":break", ":return", |
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2090 // ":finish" from the try block or a catch clause of this try |
|
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2091 // conditional. This is skipped, if there was an error in an |
|
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2092 // (unskipped) conditional command or an interrupt afterwards |
|
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2093 // or if the finally clause is present and executed a new error, |
|
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2094 // interrupt, throw, ":continue", ":break", ":return", or |
|
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|
2095 // ":finish". |
| 7 | 2096 case CSTP_CONTINUE: |
| 2097 ex_continue(eap); | |
| 2098 break; | |
| 2099 case CSTP_BREAK: | |
| 2100 ex_break(eap); | |
| 2101 break; | |
| 2102 case CSTP_RETURN: | |
| 68 | 2103 do_return(eap, FALSE, FALSE, rettv); |
| 7 | 2104 break; |
| 2105 case CSTP_FINISH: | |
| 2106 do_finish(eap, FALSE); | |
| 2107 break; | |
| 2108 | |
|
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2109 // When the finally clause was entered due to an error, |
|
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2110 // interrupt or throw (as opposed to a ":continue", ":break", |
|
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2111 // ":return", or ":finish"), restore the pending values of |
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2112 // did_emsg, got_int, and did_throw. This is skipped, if there |
|
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2113 // was a new error, interrupt, throw, ":continue", ":break", |
|
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|
2114 // ":return", or ":finish". in the finally clause. |
| 7 | 2115 default: |
| 2116 if (pending & CSTP_ERROR) | |
| 2117 did_emsg = TRUE; | |
| 2118 if (pending & CSTP_INTERRUPT) | |
| 2119 got_int = TRUE; | |
| 2120 if (pending & CSTP_THROW) | |
| 2121 rethrow = TRUE; | |
| 2122 break; | |
| 2123 } | |
| 2124 } | |
| 2125 | |
| 2126 if (rethrow) | |
|
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|
2127 // Rethrow the current exception (within this cstack). |
| 7 | 2128 do_throw(cstack); |
| 2129 } | |
| 2130 } | |
| 2131 | |
| 2132 /* | |
| 36 | 2133 * enter_cleanup() and leave_cleanup() |
| 2134 * | |
| 2135 * Functions to be called before/after invoking a sequence of autocommands for | |
| 2136 * cleanup for a failed command. (Failure means here that a call to emsg() | |
| 2137 * has been made, an interrupt occurred, or there is an uncaught exception | |
| 2138 * from a previous autocommand execution of the same command.) | |
| 24 | 2139 * |
| 36 | 2140 * Call enter_cleanup() with a pointer to a cleanup_T and pass the same |
| 2141 * pointer to leave_cleanup(). The cleanup_T structure stores the pending | |
| 2142 * error/interrupt/exception state. | |
| 2143 */ | |
| 2144 | |
| 2145 /* | |
| 2146 * This function works a bit like ex_finally() except that there was not | |
| 2147 * actually an extra try block around the part that failed and an error or | |
| 2148 * interrupt has not (yet) been converted to an exception. This function | |
| 2149 * saves the error/interrupt/ exception state and prepares for the call to | |
| 2150 * do_cmdline() that is going to be made for the cleanup autocommand | |
| 2151 * execution. | |
| 24 | 2152 */ |
| 2153 void | |
|
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|
2154 enter_cleanup(cleanup_T *csp) |
| 24 | 2155 { |
| 2156 int pending = CSTP_NONE; | |
| 2157 | |
| 2158 /* | |
| 2159 * Postpone did_emsg, got_int, did_throw. The pending values will be | |
| 2160 * restored by leave_cleanup() except if there was an aborting error, | |
| 2161 * interrupt, or uncaught exception after this function ends. | |
| 2162 */ | |
| 2163 if (did_emsg || got_int || did_throw || need_rethrow) | |
| 2164 { | |
| 2165 csp->pending = (did_emsg ? CSTP_ERROR : 0) | |
| 2166 | (got_int ? CSTP_INTERRUPT : 0) | |
| 2167 | (did_throw ? CSTP_THROW : 0) | |
| 2168 | (need_rethrow ? CSTP_THROW : 0); | |
| 2169 | |
|
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2170 // If we are currently throwing an exception (did_throw), save it as |
|
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|
2171 // well. On an error not yet converted to an exception, update |
|
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2172 // "force_abort" and reset "cause_abort" (as do_errthrow() would do). |
|
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|
2173 // This is needed for the do_cmdline() call that is going to be made |
|
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|
2174 // for autocommand execution. We need not save *msg_list because |
|
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|
2175 // there is an extra instance for every call of do_cmdline(), anyway. |
| 24 | 2176 if (did_throw || need_rethrow) |
|
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2177 { |
| 24 | 2178 csp->exception = current_exception; |
|
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2179 current_exception = NULL; |
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|
2180 } |
| 24 | 2181 else |
| 2182 { | |
| 2183 csp->exception = NULL; | |
| 2184 if (did_emsg) | |
| 2185 { | |
| 2186 force_abort |= cause_abort; | |
| 2187 cause_abort = FALSE; | |
| 2188 } | |
| 2189 } | |
| 2190 did_emsg = got_int = did_throw = need_rethrow = FALSE; | |
| 2191 | |
|
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2192 // Report if required by the 'verbose' option or when debugging. |
| 24 | 2193 report_make_pending(pending, csp->exception); |
| 2194 } | |
| 2195 else | |
| 2196 { | |
| 2197 csp->pending = CSTP_NONE; | |
| 2198 csp->exception = NULL; | |
| 2199 } | |
| 2200 } | |
| 2201 | |
| 2202 /* | |
| 36 | 2203 * See comment above enter_cleanup() for how this function is used. |
| 2204 * | |
| 2205 * This function is a bit like ex_endtry() except that there was not actually | |
| 2206 * an extra try block around the part that failed and an error or interrupt | |
| 2207 * had not (yet) been converted to an exception when the cleanup autocommand | |
| 2208 * sequence was invoked. | |
| 2209 * | |
| 2210 * This function has to be called with the address of the cleanup_T structure | |
| 2211 * filled by enter_cleanup() as an argument; it restores the error/interrupt/ | |
| 2212 * exception state saved by that function - except there was an aborting | |
| 2213 * error, an interrupt or an uncaught exception during execution of the | |
| 2214 * cleanup autocommands. In the latter case, the saved error/interrupt/ | |
| 2215 * exception state is discarded. | |
| 24 | 2216 */ |
| 2217 void | |
|
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|
2218 leave_cleanup(cleanup_T *csp) |
| 24 | 2219 { |
| 2220 int pending = csp->pending; | |
| 2221 | |
|
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2222 if (pending == CSTP_NONE) // nothing to do |
| 24 | 2223 return; |
| 2224 | |
|
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|
2225 // If there was an aborting error, an interrupt, or an uncaught exception |
|
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2226 // after the corresponding call to enter_cleanup(), discard what has been |
|
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|
2227 // made pending by it. Report this to the user if required by the |
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|
2228 // 'verbose' option or when debugging. |
| 24 | 2229 if (aborting() || need_rethrow) |
| 2230 { | |
| 2231 if (pending & CSTP_THROW) | |
|
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|
2232 // Cancel the pending exception (includes report). |
| 24 | 2233 discard_exception((except_T *)csp->exception, FALSE); |
| 2234 else | |
| 2235 report_discard_pending(pending, NULL); | |
| 2236 | |
|
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|
2237 // If an error was about to be converted to an exception when |
|
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|
2238 // enter_cleanup() was called, free the message list. |
| 1046 | 2239 if (msg_list != NULL) |
| 5517 | 2240 free_global_msglist(); |
| 24 | 2241 } |
| 2242 | |
| 2243 /* | |
| 2244 * If there was no new error, interrupt, or throw between the calls | |
| 2245 * to enter_cleanup() and leave_cleanup(), restore the pending | |
| 2246 * error/interrupt/exception state. | |
| 2247 */ | |
| 2248 else | |
| 2249 { | |
| 2250 /* | |
| 2251 * If there was an exception being thrown when enter_cleanup() was | |
| 2252 * called, we need to rethrow it. Make it the exception currently | |
| 2253 * being thrown. | |
| 2254 */ | |
| 2255 if (pending & CSTP_THROW) | |
| 2256 current_exception = csp->exception; | |
| 2257 | |
| 2258 /* | |
| 2259 * If an error was about to be converted to an exception when | |
| 2260 * enter_cleanup() was called, let "cause_abort" take the part of | |
| 2261 * "force_abort" (as done by cause_errthrow()). | |
| 2262 */ | |
| 2263 else if (pending & CSTP_ERROR) | |
| 2264 { | |
| 2265 cause_abort = force_abort; | |
| 2266 force_abort = FALSE; | |
| 2267 } | |
| 2268 | |
| 2269 /* | |
| 2270 * Restore the pending values of did_emsg, got_int, and did_throw. | |
| 2271 */ | |
| 2272 if (pending & CSTP_ERROR) | |
| 2273 did_emsg = TRUE; | |
| 2274 if (pending & CSTP_INTERRUPT) | |
| 2275 got_int = TRUE; | |
| 2276 if (pending & CSTP_THROW) | |
|
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|
2277 need_rethrow = TRUE; // did_throw will be set by do_one_cmd() |
| 24 | 2278 |
|
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|
2279 // Report if required by the 'verbose' option or when debugging. |
| 24 | 2280 report_resume_pending(pending, |
| 36 | 2281 (pending & CSTP_THROW) ? (void *)current_exception : NULL); |
| 24 | 2282 } |
| 2283 } | |
| 2284 | |
| 2285 | |
| 2286 /* | |
| 7 | 2287 * Make conditionals inactive and discard what's pending in finally clauses |
| 2288 * until the conditional type searched for or a try conditional not in its | |
| 79 | 2289 * finally clause is reached. If this is in an active catch clause, finish |
| 2290 * the caught exception. | |
| 2291 * Return the cstack index where the search stopped. | |
| 75 | 2292 * Values used for "searched_cond" are (CSF_WHILE | CSF_FOR) or CSF_TRY or 0, |
| 2293 * the latter meaning the innermost try conditional not in its finally clause. | |
| 2294 * "inclusive" tells whether the conditional searched for should be made | |
| 4352 | 2295 * inactive itself (a try conditional not in its finally clause possibly find |
| 75 | 2296 * before is always made inactive). If "inclusive" is TRUE and |
| 2297 * "searched_cond" is CSF_TRY|CSF_SILENT, the saved former value of | |
| 2298 * "emsg_silent", if reset when the try conditional finally reached was | |
| 4352 | 2299 * entered, is restored (used by ex_endtry()). This is normally done only |
| 75 | 2300 * when such a try conditional is left. |
| 7 | 2301 */ |
| 2302 int | |
|
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|
2303 cleanup_conditionals( |
|
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|
2304 cstack_T *cstack, |
|
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diff
changeset
|
2305 int searched_cond, |
|
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diff
changeset
|
2306 int inclusive) |
| 7 | 2307 { |
| 2308 int idx; | |
| 2309 int stop = FALSE; | |
| 2310 | |
| 2311 for (idx = cstack->cs_idx; idx >= 0; --idx) | |
| 2312 { | |
| 2313 if (cstack->cs_flags[idx] & CSF_TRY) | |
| 2314 { | |
| 2315 /* | |
| 2316 * Discard anything pending in a finally clause and continue the | |
| 2317 * search. There may also be a pending ":continue", ":break", | |
| 2318 * ":return", or ":finish" before the finally clause. We must not | |
| 2319 * discard it, unless an error or interrupt occurred afterwards. | |
| 2320 */ | |
| 359 | 2321 if (did_emsg || got_int || (cstack->cs_flags[idx] & CSF_FINALLY)) |
| 7 | 2322 { |
| 2323 switch (cstack->cs_pending[idx]) | |
| 2324 { | |
| 2325 case CSTP_NONE: | |
| 2326 break; | |
| 2327 | |
| 2328 case CSTP_CONTINUE: | |
| 2329 case CSTP_BREAK: | |
| 2330 case CSTP_FINISH: | |
| 2331 report_discard_pending(cstack->cs_pending[idx], NULL); | |
| 2332 cstack->cs_pending[idx] = CSTP_NONE; | |
| 2333 break; | |
| 2334 | |
| 2335 case CSTP_RETURN: | |
| 2336 report_discard_pending(CSTP_RETURN, | |
| 68 | 2337 cstack->cs_rettv[idx]); |
| 2338 discard_pending_return(cstack->cs_rettv[idx]); | |
| 7 | 2339 cstack->cs_pending[idx] = CSTP_NONE; |
| 2340 break; | |
| 2341 | |
| 2342 default: | |
| 2343 if (cstack->cs_flags[idx] & CSF_FINALLY) | |
| 2344 { | |
| 2345 if (cstack->cs_pending[idx] & CSTP_THROW) | |
| 2346 { | |
|
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2347 // Cancel the pending exception. This is in the |
|
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|
2348 // finally clause, so that the stack of the |
|
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|
2349 // caught exceptions is not involved. |
|
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2350 discard_exception( |
|
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|
2351 (except_T *)cstack->cs_exception[idx], |
| 7 | 2352 FALSE); |
| 2353 } | |
| 2354 else | |
| 2355 report_discard_pending(cstack->cs_pending[idx], | |
| 2356 NULL); | |
| 2357 cstack->cs_pending[idx] = CSTP_NONE; | |
| 2358 } | |
| 2359 break; | |
| 2360 } | |
| 2361 } | |
| 2362 | |
| 2363 /* | |
| 2364 * Stop at a try conditional not in its finally clause. If this try | |
| 2365 * conditional is in an active catch clause, finish the caught | |
| 2366 * exception. | |
| 2367 */ | |
| 2368 if (!(cstack->cs_flags[idx] & CSF_FINALLY)) | |
| 2369 { | |
| 2370 if ((cstack->cs_flags[idx] & CSF_ACTIVE) | |
| 2371 && (cstack->cs_flags[idx] & CSF_CAUGHT)) | |
| 2372 finish_exception((except_T *)cstack->cs_exception[idx]); | |
|
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2373 // Stop at this try conditional - except the try block never |
|
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|
2374 // got active (because of an inactive surrounding conditional |
|
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2375 // or when the ":try" appeared after an error or interrupt or |
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|
2376 // throw). |
| 7 | 2377 if (cstack->cs_flags[idx] & CSF_TRUE) |
| 2378 { | |
| 2379 if (searched_cond == 0 && !inclusive) | |
| 2380 break; | |
| 2381 stop = TRUE; | |
| 2382 } | |
| 2383 } | |
| 2384 } | |
| 2385 | |
|
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2386 // Stop on the searched conditional type (even when the surrounding |
|
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|
2387 // conditional is not active or something has been made pending). |
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2388 // If "inclusive" is TRUE and "searched_cond" is CSF_TRY|CSF_SILENT, |
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|
2389 // check first whether "emsg_silent" needs to be restored. |
| 7 | 2390 if (cstack->cs_flags[idx] & searched_cond) |
| 2391 { | |
| 2392 if (!inclusive) | |
| 2393 break; | |
| 2394 stop = TRUE; | |
| 2395 } | |
| 2396 cstack->cs_flags[idx] &= ~CSF_ACTIVE; | |
| 2397 if (stop && searched_cond != (CSF_TRY | CSF_SILENT)) | |
| 2398 break; | |
| 2399 | |
| 2400 /* | |
| 1214 | 2401 * When leaving a try conditional that reset "emsg_silent" on its |
| 2402 * entry after saving the original value, restore that value here and | |
| 2403 * free the memory used to store it. | |
| 7 | 2404 */ |
| 2405 if ((cstack->cs_flags[idx] & CSF_TRY) | |
| 359 | 2406 && (cstack->cs_flags[idx] & CSF_SILENT)) |
| 7 | 2407 { |
| 2408 eslist_T *elem; | |
| 2409 | |
| 2410 elem = cstack->cs_emsg_silent_list; | |
| 2411 cstack->cs_emsg_silent_list = elem->next; | |
| 2412 emsg_silent = elem->saved_emsg_silent; | |
| 2413 vim_free(elem); | |
| 2414 cstack->cs_flags[idx] &= ~CSF_SILENT; | |
| 2415 } | |
| 2416 if (stop) | |
| 2417 break; | |
| 2418 } | |
| 2419 return idx; | |
| 2420 } | |
| 2421 | |
| 2422 /* | |
| 75 | 2423 * Return an appropriate error message for a missing endwhile/endfor/endif. |
| 2424 */ | |
|
15470
55ccc2d353bd
patch 8.1.0743: giving error messages is not flexible
Bram Moolenaar <Bram@vim.org>
parents:
14862
diff
changeset
|
2425 static char * |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
parents:
18779
diff
changeset
|
2426 get_end_emsg(cstack_T *cstack) |
| 75 | 2427 { |
| 2428 if (cstack->cs_flags[cstack->cs_idx] & CSF_WHILE) | |
|
21459
a422bd80b434
patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
21118
diff
changeset
|
2429 return _(e_endwhile); |
| 75 | 2430 if (cstack->cs_flags[cstack->cs_idx] & CSF_FOR) |
|
21459
a422bd80b434
patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
21118
diff
changeset
|
2431 return _(e_endfor); |
|
a422bd80b434
patch 8.2.1280: Ex command error cannot contain an argument
Bram Moolenaar <Bram@vim.org>
parents:
21118
diff
changeset
|
2432 return _(e_endif); |
| 75 | 2433 } |
| 2434 | |
| 2435 | |
| 2436 /* | |
| 7 | 2437 * Rewind conditionals until index "idx" is reached. "cond_type" and |
| 2438 * "cond_level" specify a conditional type and the address of a level variable | |
| 2439 * which is to be decremented with each skipped conditional of the specified | |
| 2440 * type. | |
| 79 | 2441 * Also free "for info" structures where needed. |
| 7 | 2442 */ |
| 79 | 2443 void |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
2444 rewind_conditionals( |
|
18904
2bdc2e1f6e1f
patch 8.2.0013: not using a typedef for condstack
Bram Moolenaar <Bram@vim.org>
parents:
18779
diff
changeset
|
2445 cstack_T *cstack, |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
2446 int idx, |
|
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
2447 int cond_type, |
|
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
2448 int *cond_level) |
| 7 | 2449 { |
| 2450 while (cstack->cs_idx > idx) | |
| 2451 { | |
| 2452 if (cstack->cs_flags[cstack->cs_idx] & cond_type) | |
| 2453 --*cond_level; | |
| 79 | 2454 if (cstack->cs_flags[cstack->cs_idx] & CSF_FOR) |
| 2455 free_for_info(cstack->cs_forinfo[cstack->cs_idx]); | |
|
22551
86a115a80262
patch 8.2.1824: Vim9: variables at the script level escape their scope
Bram Moolenaar <Bram@vim.org>
parents:
22208
diff
changeset
|
2456 leave_block(cstack); |
| 7 | 2457 } |
| 2458 } | |
| 2459 | |
| 2460 /* | |
| 2461 * ":endfunction" when not after a ":function" | |
| 2462 */ | |
| 2463 void | |
|
20029
8fb1cf4c44d5
patch 8.2.0570: Vim9: no error when omitting type from argument
Bram Moolenaar <Bram@vim.org>
parents:
19892
diff
changeset
|
2464 ex_endfunction(exarg_T *eap) |
| 7 | 2465 { |
|
20029
8fb1cf4c44d5
patch 8.2.0570: Vim9: no error when omitting type from argument
Bram Moolenaar <Bram@vim.org>
parents:
19892
diff
changeset
|
2466 if (eap->cmdidx == CMD_enddef) |
|
8fb1cf4c44d5
patch 8.2.0570: Vim9: no error when omitting type from argument
Bram Moolenaar <Bram@vim.org>
parents:
19892
diff
changeset
|
2467 emsg(_("E193: :enddef not inside a function")); |
|
8fb1cf4c44d5
patch 8.2.0570: Vim9: no error when omitting type from argument
Bram Moolenaar <Bram@vim.org>
parents:
19892
diff
changeset
|
2468 else |
|
8fb1cf4c44d5
patch 8.2.0570: Vim9: no error when omitting type from argument
Bram Moolenaar <Bram@vim.org>
parents:
19892
diff
changeset
|
2469 emsg(_("E193: :endfunction not inside a function")); |
| 7 | 2470 } |
| 2471 | |
| 2472 /* | |
| 75 | 2473 * Return TRUE if the string "p" looks like a ":while" or ":for" command. |
| 7 | 2474 */ |
| 2475 int | |
|
7819
f86adafb28d4
commit https://github.com/vim/vim/commit/78c0b7d43e5048fd71d12816659667834170c76d
Christian Brabandt <cb@256bit.org>
parents:
7801
diff
changeset
|
2476 has_loop_cmd(char_u *p) |
| 7 | 2477 { |
| 1447 | 2478 int len; |
| 2479 | |
|
18779
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
2480 // skip modifiers, white space and ':' |
| 1447 | 2481 for (;;) |
| 2482 { | |
| 2483 while (*p == ' ' || *p == '\t' || *p == ':') | |
| 2484 ++p; | |
| 2485 len = modifier_len(p); | |
| 2486 if (len == 0) | |
| 2487 break; | |
| 2488 p += len; | |
| 2489 } | |
| 75 | 2490 if ((p[0] == 'w' && p[1] == 'h') |
| 2491 || (p[0] == 'f' && p[1] == 'o' && p[2] == 'r')) | |
| 7 | 2492 return TRUE; |
| 2493 return FALSE; | |
| 2494 } | |
| 2495 | |
|
18779
8f05b3cf8557
patch 8.1.2379: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18699
diff
changeset
|
2496 #endif // FEAT_EVAL |