| 1 | /* Manages interpreters for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2000-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | Written by Jim Ingham <jingham@apple.com> of Apple Computer, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | /* This is just a first cut at separating out the "interpreter" |
| 23 | functions of gdb into self-contained modules. There are a couple |
| 24 | of open areas that need to be sorted out: |
| 25 | |
| 26 | 1) The interpreter explicitly contains a UI_OUT, and can insert itself |
| 27 | into the event loop, but it doesn't explicitly contain hooks for readline. |
| 28 | I did this because it seems to me many interpreters won't want to use |
| 29 | the readline command interface, and it is probably simpler to just let |
| 30 | them take over the input in their resume proc. */ |
| 31 | |
| 32 | #include "defs.h" |
| 33 | #include "gdbcmd.h" |
| 34 | #include "ui-out.h" |
| 35 | #include "event-loop.h" |
| 36 | #include "event-top.h" |
| 37 | #include "interps.h" |
| 38 | #include "completer.h" |
| 39 | #include "top.h" /* For command_loop. */ |
| 40 | #include "continuations.h" |
| 41 | |
| 42 | /* Each UI has its own independent set of interpreters. */ |
| 43 | |
| 44 | struct ui_interp_info |
| 45 | { |
| 46 | /* Each top level has its own independent set of interpreters. */ |
| 47 | struct interp *interp_list; |
| 48 | struct interp *current_interpreter; |
| 49 | struct interp *top_level_interpreter; |
| 50 | |
| 51 | /* The interpreter that is active while `interp_exec' is active, NULL |
| 52 | at all other times. */ |
| 53 | struct interp *command_interpreter; |
| 54 | }; |
| 55 | |
| 56 | /* Get UI's ui_interp_info object. Never returns NULL. */ |
| 57 | |
| 58 | static struct ui_interp_info * |
| 59 | get_interp_info (struct ui *ui) |
| 60 | { |
| 61 | if (ui->interp_info == NULL) |
| 62 | ui->interp_info = XCNEW (struct ui_interp_info); |
| 63 | return ui->interp_info; |
| 64 | } |
| 65 | |
| 66 | /* Get the current UI's ui_interp_info object. Never returns |
| 67 | NULL. */ |
| 68 | |
| 69 | static struct ui_interp_info * |
| 70 | get_current_interp_info (void) |
| 71 | { |
| 72 | return get_interp_info (current_ui); |
| 73 | } |
| 74 | |
| 75 | struct interp |
| 76 | { |
| 77 | /* This is the name in "-i=" and set interpreter. */ |
| 78 | const char *name; |
| 79 | |
| 80 | /* Interpreters are stored in a linked list, this is the next |
| 81 | one... */ |
| 82 | struct interp *next; |
| 83 | |
| 84 | /* This is a cookie that an instance of the interpreter can use. |
| 85 | This is a bit confused right now as the exact initialization |
| 86 | sequence for it, and how it relates to the interpreter's uiout |
| 87 | object is a bit confused. */ |
| 88 | void *data; |
| 89 | |
| 90 | /* Has the init_proc been run? */ |
| 91 | int inited; |
| 92 | |
| 93 | const struct interp_procs *procs; |
| 94 | int quiet_p; |
| 95 | }; |
| 96 | |
| 97 | /* The magic initialization routine for this module. */ |
| 98 | |
| 99 | void _initialize_interpreter (void); |
| 100 | |
| 101 | static struct interp *interp_lookup_existing (struct ui *ui, |
| 102 | const char *name); |
| 103 | |
| 104 | /* interp_new - This allocates space for a new interpreter, |
| 105 | fills the fields from the inputs, and returns a pointer to the |
| 106 | interpreter. */ |
| 107 | struct interp * |
| 108 | interp_new (const char *name, const struct interp_procs *procs, void *data) |
| 109 | { |
| 110 | struct interp *new_interp; |
| 111 | |
| 112 | new_interp = XNEW (struct interp); |
| 113 | |
| 114 | new_interp->name = xstrdup (name); |
| 115 | new_interp->data = data; |
| 116 | new_interp->quiet_p = 0; |
| 117 | new_interp->procs = procs; |
| 118 | new_interp->inited = 0; |
| 119 | |
| 120 | return new_interp; |
| 121 | } |
| 122 | |
| 123 | /* An interpreter factory. Maps an interpreter name to the factory |
| 124 | function that instantiates an interpreter by that name. */ |
| 125 | |
| 126 | struct interp_factory |
| 127 | { |
| 128 | /* This is the name in "-i=INTERP" and "interpreter-exec INTERP". */ |
| 129 | const char *name; |
| 130 | |
| 131 | /* The function that creates the interpreter. */ |
| 132 | interp_factory_func func; |
| 133 | }; |
| 134 | |
| 135 | typedef struct interp_factory *interp_factory_p; |
| 136 | DEF_VEC_P(interp_factory_p); |
| 137 | |
| 138 | /* The registered interpreter factories. */ |
| 139 | static VEC(interp_factory_p) *interpreter_factories = NULL; |
| 140 | |
| 141 | /* See interps.h. */ |
| 142 | |
| 143 | void |
| 144 | interp_factory_register (const char *name, interp_factory_func func) |
| 145 | { |
| 146 | struct interp_factory *f; |
| 147 | int ix; |
| 148 | |
| 149 | /* Assert that no factory for NAME is already registered. */ |
| 150 | for (ix = 0; |
| 151 | VEC_iterate (interp_factory_p, interpreter_factories, ix, f); |
| 152 | ++ix) |
| 153 | if (strcmp (f->name, name) == 0) |
| 154 | { |
| 155 | internal_error (__FILE__, __LINE__, |
| 156 | _("interpreter factory already registered: \"%s\"\n"), |
| 157 | name); |
| 158 | } |
| 159 | |
| 160 | f = XNEW (struct interp_factory); |
| 161 | f->name = name; |
| 162 | f->func = func; |
| 163 | VEC_safe_push (interp_factory_p, interpreter_factories, f); |
| 164 | } |
| 165 | |
| 166 | /* Add interpreter INTERP to the gdb interpreter list. The |
| 167 | interpreter must not have previously been added. */ |
| 168 | void |
| 169 | interp_add (struct ui *ui, struct interp *interp) |
| 170 | { |
| 171 | struct ui_interp_info *ui_interp = get_interp_info (ui); |
| 172 | |
| 173 | gdb_assert (interp_lookup_existing (ui, interp->name) == NULL); |
| 174 | |
| 175 | interp->next = ui_interp->interp_list; |
| 176 | ui_interp->interp_list = interp; |
| 177 | } |
| 178 | |
| 179 | /* This sets the current interpreter to be INTERP. If INTERP has not |
| 180 | been initialized, then this will also run the init proc. If the |
| 181 | init proc is successful, return 1, if it fails, set the old |
| 182 | interpreter back in place and return 0. If we can't restore the |
| 183 | old interpreter, then raise an internal error, since we are in |
| 184 | pretty bad shape at this point. |
| 185 | |
| 186 | The TOP_LEVEL parameter tells if this new interpreter is |
| 187 | the top-level one. The top-level is what is requested |
| 188 | on the command line, and is responsible for reporting general |
| 189 | notification about target state changes. For example, if |
| 190 | MI is the top-level interpreter, then it will always report |
| 191 | events such as target stops and new thread creation, even if they |
| 192 | are caused by CLI commands. */ |
| 193 | int |
| 194 | interp_set (struct interp *interp, int top_level) |
| 195 | { |
| 196 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 197 | struct interp *old_interp = ui_interp->current_interpreter; |
| 198 | int first_time = 0; |
| 199 | char buffer[64]; |
| 200 | |
| 201 | /* If we already have an interpreter, then trying to |
| 202 | set top level interpreter is kinda pointless. */ |
| 203 | gdb_assert (!top_level || !ui_interp->current_interpreter); |
| 204 | gdb_assert (!top_level || !ui_interp->top_level_interpreter); |
| 205 | |
| 206 | if (old_interp != NULL) |
| 207 | { |
| 208 | ui_out_flush (current_uiout); |
| 209 | if (old_interp->procs->suspend_proc |
| 210 | && !old_interp->procs->suspend_proc (old_interp->data)) |
| 211 | { |
| 212 | error (_("Could not suspend interpreter \"%s\"."), |
| 213 | old_interp->name); |
| 214 | } |
| 215 | } |
| 216 | else |
| 217 | { |
| 218 | first_time = 1; |
| 219 | } |
| 220 | |
| 221 | ui_interp->current_interpreter = interp; |
| 222 | if (top_level) |
| 223 | ui_interp->top_level_interpreter = interp; |
| 224 | |
| 225 | /* We use interpreter_p for the "set interpreter" variable, so we need |
| 226 | to make sure we have a malloc'ed copy for the set command to free. */ |
| 227 | if (interpreter_p != NULL |
| 228 | && strcmp (interp->name, interpreter_p) != 0) |
| 229 | { |
| 230 | xfree (interpreter_p); |
| 231 | |
| 232 | interpreter_p = xstrdup (interp->name); |
| 233 | } |
| 234 | |
| 235 | /* Run the init proc. If it fails, try to restore the old interp. */ |
| 236 | |
| 237 | if (!interp->inited) |
| 238 | { |
| 239 | if (interp->procs->init_proc != NULL) |
| 240 | { |
| 241 | interp->data = interp->procs->init_proc (interp, top_level); |
| 242 | } |
| 243 | interp->inited = 1; |
| 244 | } |
| 245 | |
| 246 | /* Do this only after the interpreter is initialized. */ |
| 247 | current_uiout = interp->procs->ui_out_proc (interp); |
| 248 | |
| 249 | /* Clear out any installed interpreter hooks/event handlers. */ |
| 250 | clear_interpreter_hooks (); |
| 251 | |
| 252 | if (interp->procs->resume_proc != NULL |
| 253 | && (!interp->procs->resume_proc (interp->data))) |
| 254 | { |
| 255 | if (old_interp == NULL || !interp_set (old_interp, 0)) |
| 256 | internal_error (__FILE__, __LINE__, |
| 257 | _("Failed to initialize new interp \"%s\" %s"), |
| 258 | interp->name, "and could not restore old interp!\n"); |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | if (!first_time && !interp_quiet_p (interp)) |
| 263 | { |
| 264 | xsnprintf (buffer, sizeof (buffer), |
| 265 | "Switching to interpreter \"%.24s\".\n", interp->name); |
| 266 | ui_out_text (current_uiout, buffer); |
| 267 | } |
| 268 | |
| 269 | return 1; |
| 270 | } |
| 271 | |
| 272 | /* Look up the interpreter for NAME. If no such interpreter exists, |
| 273 | return NULL, otherwise return a pointer to the interpreter. */ |
| 274 | |
| 275 | static struct interp * |
| 276 | interp_lookup_existing (struct ui *ui, const char *name) |
| 277 | { |
| 278 | struct ui_interp_info *ui_interp = get_interp_info (ui); |
| 279 | struct interp *interp; |
| 280 | |
| 281 | for (interp = ui_interp->interp_list; |
| 282 | interp != NULL; |
| 283 | interp = interp->next) |
| 284 | { |
| 285 | if (strcmp (interp->name, name) == 0) |
| 286 | return interp; |
| 287 | } |
| 288 | |
| 289 | return NULL; |
| 290 | } |
| 291 | |
| 292 | /* See interps.h. */ |
| 293 | |
| 294 | struct interp * |
| 295 | interp_lookup (struct ui *ui, const char *name) |
| 296 | { |
| 297 | struct interp_factory *factory; |
| 298 | struct interp *interp; |
| 299 | int ix; |
| 300 | |
| 301 | if (name == NULL || strlen (name) == 0) |
| 302 | return NULL; |
| 303 | |
| 304 | /* Only create each interpreter once per top level. */ |
| 305 | interp = interp_lookup_existing (ui, name); |
| 306 | if (interp != NULL) |
| 307 | return interp; |
| 308 | |
| 309 | for (ix = 0; |
| 310 | VEC_iterate (interp_factory_p, interpreter_factories, ix, factory); |
| 311 | ++ix) |
| 312 | if (strcmp (factory->name, name) == 0) |
| 313 | { |
| 314 | interp = factory->func (name); |
| 315 | interp_add (ui, interp); |
| 316 | return interp; |
| 317 | } |
| 318 | |
| 319 | return NULL; |
| 320 | } |
| 321 | |
| 322 | /* See interps.h. */ |
| 323 | |
| 324 | void |
| 325 | set_top_level_interpreter (const char *name) |
| 326 | { |
| 327 | /* Find it. */ |
| 328 | struct interp *interp = interp_lookup (current_ui, name); |
| 329 | |
| 330 | if (interp == NULL) |
| 331 | error (_("Interpreter `%s' unrecognized"), name); |
| 332 | /* Install it. */ |
| 333 | if (!interp_set (interp, 1)) |
| 334 | error (_("Interpreter `%s' failed to initialize."), name); |
| 335 | } |
| 336 | |
| 337 | /* Returns the current interpreter. */ |
| 338 | |
| 339 | struct ui_out * |
| 340 | interp_ui_out (struct interp *interp) |
| 341 | { |
| 342 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 343 | |
| 344 | if (interp == NULL) |
| 345 | interp = ui_interp->current_interpreter; |
| 346 | return interp->procs->ui_out_proc (interp); |
| 347 | } |
| 348 | |
| 349 | int |
| 350 | current_interp_set_logging (int start_log, struct ui_file *out, |
| 351 | struct ui_file *logfile) |
| 352 | { |
| 353 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 354 | struct interp *interp = ui_interp->current_interpreter; |
| 355 | |
| 356 | if (interp == NULL |
| 357 | || interp->procs->set_logging_proc == NULL) |
| 358 | return 0; |
| 359 | |
| 360 | return interp->procs->set_logging_proc (interp, start_log, out, logfile); |
| 361 | } |
| 362 | |
| 363 | /* Temporarily overrides the current interpreter. */ |
| 364 | struct interp * |
| 365 | interp_set_temp (const char *name) |
| 366 | { |
| 367 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 368 | struct interp *interp = interp_lookup (current_ui, name); |
| 369 | struct interp *old_interp = ui_interp->current_interpreter; |
| 370 | |
| 371 | if (interp) |
| 372 | ui_interp->current_interpreter = interp; |
| 373 | return old_interp; |
| 374 | } |
| 375 | |
| 376 | /* Returns the interpreter's cookie. */ |
| 377 | |
| 378 | void * |
| 379 | interp_data (struct interp *interp) |
| 380 | { |
| 381 | return interp->data; |
| 382 | } |
| 383 | |
| 384 | /* Returns the interpreter's name. */ |
| 385 | |
| 386 | const char * |
| 387 | interp_name (struct interp *interp) |
| 388 | { |
| 389 | return interp->name; |
| 390 | } |
| 391 | |
| 392 | /* Returns true if the current interp is the passed in name. */ |
| 393 | int |
| 394 | current_interp_named_p (const char *interp_name) |
| 395 | { |
| 396 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 397 | struct interp *interp = ui_interp->current_interpreter; |
| 398 | |
| 399 | if (interp != NULL) |
| 400 | return (strcmp (interp->name, interp_name) == 0); |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | /* The interpreter that was active when a command was executed. |
| 406 | Normally that'd always be CURRENT_INTERPRETER, except that MI's |
| 407 | -interpreter-exec command doesn't actually flip the current |
| 408 | interpreter when running its sub-command. The |
| 409 | `command_interpreter' global tracks when interp_exec is called |
| 410 | (IOW, when -interpreter-exec is called). If that is set, it is |
| 411 | INTERP in '-interpreter-exec INTERP "CMD"' or in 'interpreter-exec |
| 412 | INTERP "CMD". Otherwise, interp_exec isn't active, and so the |
| 413 | interpreter running the command is the current interpreter. */ |
| 414 | |
| 415 | struct interp * |
| 416 | command_interp (void) |
| 417 | { |
| 418 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 419 | |
| 420 | if (ui_interp->command_interpreter != NULL) |
| 421 | return ui_interp->command_interpreter; |
| 422 | else |
| 423 | return ui_interp->current_interpreter; |
| 424 | } |
| 425 | |
| 426 | /* See interps.h. */ |
| 427 | |
| 428 | void |
| 429 | interp_pre_command_loop (struct interp *interp) |
| 430 | { |
| 431 | gdb_assert (interp != NULL); |
| 432 | |
| 433 | if (interp->procs->pre_command_loop_proc != NULL) |
| 434 | interp->procs->pre_command_loop_proc (interp); |
| 435 | } |
| 436 | |
| 437 | /* See interp.h */ |
| 438 | |
| 439 | int |
| 440 | interp_supports_command_editing (struct interp *interp) |
| 441 | { |
| 442 | if (interp->procs->supports_command_editing_proc != NULL) |
| 443 | return interp->procs->supports_command_editing_proc (interp); |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | int |
| 448 | interp_quiet_p (struct interp *interp) |
| 449 | { |
| 450 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 451 | |
| 452 | if (interp != NULL) |
| 453 | return interp->quiet_p; |
| 454 | else |
| 455 | return ui_interp->current_interpreter->quiet_p; |
| 456 | } |
| 457 | |
| 458 | static int |
| 459 | interp_set_quiet (struct interp *interp, int quiet) |
| 460 | { |
| 461 | int old_val = interp->quiet_p; |
| 462 | |
| 463 | interp->quiet_p = quiet; |
| 464 | return old_val; |
| 465 | } |
| 466 | |
| 467 | /* interp_exec - This executes COMMAND_STR in the current |
| 468 | interpreter. */ |
| 469 | |
| 470 | struct gdb_exception |
| 471 | interp_exec (struct interp *interp, const char *command_str) |
| 472 | { |
| 473 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 474 | |
| 475 | struct gdb_exception ex; |
| 476 | struct interp *save_command_interp; |
| 477 | |
| 478 | gdb_assert (interp->procs->exec_proc != NULL); |
| 479 | |
| 480 | /* See `command_interp' for why we do this. */ |
| 481 | save_command_interp = ui_interp->command_interpreter; |
| 482 | ui_interp->command_interpreter = interp; |
| 483 | |
| 484 | ex = interp->procs->exec_proc (interp->data, command_str); |
| 485 | |
| 486 | ui_interp->command_interpreter = save_command_interp; |
| 487 | |
| 488 | return ex; |
| 489 | } |
| 490 | |
| 491 | /* A convenience routine that nulls out all the common command hooks. |
| 492 | Use it when removing your interpreter in its suspend proc. */ |
| 493 | void |
| 494 | clear_interpreter_hooks (void) |
| 495 | { |
| 496 | deprecated_print_frame_info_listing_hook = 0; |
| 497 | /*print_frame_more_info_hook = 0; */ |
| 498 | deprecated_query_hook = 0; |
| 499 | deprecated_warning_hook = 0; |
| 500 | deprecated_interactive_hook = 0; |
| 501 | deprecated_readline_begin_hook = 0; |
| 502 | deprecated_readline_hook = 0; |
| 503 | deprecated_readline_end_hook = 0; |
| 504 | deprecated_context_hook = 0; |
| 505 | deprecated_target_wait_hook = 0; |
| 506 | deprecated_call_command_hook = 0; |
| 507 | deprecated_error_begin_hook = 0; |
| 508 | } |
| 509 | |
| 510 | static void |
| 511 | interpreter_exec_cmd (char *args, int from_tty) |
| 512 | { |
| 513 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 514 | struct interp *old_interp, *interp_to_use; |
| 515 | char **prules = NULL; |
| 516 | char **trule = NULL; |
| 517 | unsigned int nrules; |
| 518 | unsigned int i; |
| 519 | int old_quiet, use_quiet; |
| 520 | struct cleanup *cleanup; |
| 521 | |
| 522 | if (args == NULL) |
| 523 | error_no_arg (_("interpreter-exec command")); |
| 524 | |
| 525 | prules = gdb_buildargv (args); |
| 526 | cleanup = make_cleanup_freeargv (prules); |
| 527 | |
| 528 | nrules = 0; |
| 529 | for (trule = prules; *trule != NULL; trule++) |
| 530 | nrules++; |
| 531 | |
| 532 | if (nrules < 2) |
| 533 | error (_("usage: interpreter-exec <interpreter> [ <command> ... ]")); |
| 534 | |
| 535 | old_interp = ui_interp->current_interpreter; |
| 536 | |
| 537 | interp_to_use = interp_lookup (current_ui, prules[0]); |
| 538 | if (interp_to_use == NULL) |
| 539 | error (_("Could not find interpreter \"%s\"."), prules[0]); |
| 540 | |
| 541 | /* Temporarily set interpreters quiet. */ |
| 542 | old_quiet = interp_set_quiet (old_interp, 1); |
| 543 | use_quiet = interp_set_quiet (interp_to_use, 1); |
| 544 | |
| 545 | if (!interp_set (interp_to_use, 0)) |
| 546 | error (_("Could not switch to interpreter \"%s\"."), prules[0]); |
| 547 | |
| 548 | for (i = 1; i < nrules; i++) |
| 549 | { |
| 550 | struct gdb_exception e = interp_exec (interp_to_use, prules[i]); |
| 551 | |
| 552 | if (e.reason < 0) |
| 553 | { |
| 554 | interp_set (old_interp, 0); |
| 555 | interp_set_quiet (interp_to_use, use_quiet); |
| 556 | interp_set_quiet (old_interp, old_quiet); |
| 557 | error (_("error in command: \"%s\"."), prules[i]); |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | interp_set (old_interp, 0); |
| 562 | interp_set_quiet (interp_to_use, use_quiet); |
| 563 | interp_set_quiet (old_interp, old_quiet); |
| 564 | |
| 565 | do_cleanups (cleanup); |
| 566 | } |
| 567 | |
| 568 | /* See interps.h. */ |
| 569 | |
| 570 | VEC (char_ptr) * |
| 571 | interpreter_completer (struct cmd_list_element *ignore, |
| 572 | const char *text, const char *word) |
| 573 | { |
| 574 | struct interp_factory *interp; |
| 575 | int textlen; |
| 576 | VEC (char_ptr) *matches = NULL; |
| 577 | int ix; |
| 578 | |
| 579 | textlen = strlen (text); |
| 580 | for (ix = 0; |
| 581 | VEC_iterate (interp_factory_p, interpreter_factories, ix, interp); |
| 582 | ++ix) |
| 583 | { |
| 584 | if (strncmp (interp->name, text, textlen) == 0) |
| 585 | { |
| 586 | char *match; |
| 587 | |
| 588 | match = (char *) xmalloc (strlen (word) + strlen (interp->name) + 1); |
| 589 | if (word == text) |
| 590 | strcpy (match, interp->name); |
| 591 | else if (word > text) |
| 592 | { |
| 593 | /* Return some portion of interp->name. */ |
| 594 | strcpy (match, interp->name + (word - text)); |
| 595 | } |
| 596 | else |
| 597 | { |
| 598 | /* Return some of text plus interp->name. */ |
| 599 | strncpy (match, word, text - word); |
| 600 | match[text - word] = '\0'; |
| 601 | strcat (match, interp->name); |
| 602 | } |
| 603 | VEC_safe_push (char_ptr, matches, match); |
| 604 | } |
| 605 | } |
| 606 | |
| 607 | return matches; |
| 608 | } |
| 609 | |
| 610 | struct interp * |
| 611 | top_level_interpreter (void) |
| 612 | { |
| 613 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
| 614 | |
| 615 | return ui_interp->top_level_interpreter; |
| 616 | } |
| 617 | |
| 618 | void * |
| 619 | top_level_interpreter_data (void) |
| 620 | { |
| 621 | struct interp *interp; |
| 622 | |
| 623 | interp = top_level_interpreter (); |
| 624 | gdb_assert (interp != NULL); |
| 625 | return interp->data; |
| 626 | } |
| 627 | |
| 628 | /* See interps.h. */ |
| 629 | |
| 630 | struct interp * |
| 631 | current_interpreter (void) |
| 632 | { |
| 633 | struct ui_interp_info *ui_interp = get_interp_info (current_ui); |
| 634 | |
| 635 | return ui_interp->current_interpreter; |
| 636 | } |
| 637 | |
| 638 | /* This just adds the "interpreter-exec" command. */ |
| 639 | void |
| 640 | _initialize_interpreter (void) |
| 641 | { |
| 642 | struct cmd_list_element *c; |
| 643 | |
| 644 | c = add_cmd ("interpreter-exec", class_support, |
| 645 | interpreter_exec_cmd, _("\ |
| 646 | Execute a command in an interpreter. It takes two arguments:\n\ |
| 647 | The first argument is the name of the interpreter to use.\n\ |
| 648 | The second argument is the command to execute.\n"), &cmdlist); |
| 649 | set_cmd_completer (c, interpreter_completer); |
| 650 | } |