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4a8f6654 AC |
1 | /* Manages interpreters for GDB, the GNU debugger. |
2 | ||
61baf725 | 3 | Copyright (C) 2000-2017 Free Software Foundation, Inc. |
4a8f6654 AC |
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
4a8f6654 AC |
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 | |
1777feb0 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
4a8f6654 AC |
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" | |
4a8f6654 | 39 | #include "top.h" /* For command_loop. */ |
be34f849 | 40 | #include "continuations.h" |
4a8f6654 | 41 | |
cb814510 PA |
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 | ||
8322445e | 56 | /* Get UI's ui_interp_info object. Never returns NULL. */ |
cb814510 PA |
57 | |
58 | static struct ui_interp_info * | |
8322445e | 59 | get_interp_info (struct ui *ui) |
cb814510 | 60 | { |
cb814510 PA |
61 | if (ui->interp_info == NULL) |
62 | ui->interp_info = XCNEW (struct ui_interp_info); | |
63 | return ui->interp_info; | |
64 | } | |
b4a14fd0 | 65 | |
8322445e PA |
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 | ||
1777feb0 | 75 | /* The magic initialization routine for this module. */ |
4a8f6654 AC |
76 | |
77 | void _initialize_interpreter (void); | |
78 | ||
8322445e PA |
79 | static struct interp *interp_lookup_existing (struct ui *ui, |
80 | const char *name); | |
81 | ||
d6f9b0fb | 82 | interp::interp (const char *name) |
4a8f6654 | 83 | { |
d6f9b0fb PA |
84 | this->name = xstrdup (name); |
85 | this->quiet_p = false; | |
86 | this->inited = false; | |
4a8f6654 AC |
87 | } |
88 | ||
d6f9b0fb PA |
89 | interp::~interp () |
90 | {} | |
91 | ||
8322445e PA |
92 | /* An interpreter factory. Maps an interpreter name to the factory |
93 | function that instantiates an interpreter by that name. */ | |
94 | ||
95 | struct interp_factory | |
96 | { | |
97 | /* This is the name in "-i=INTERP" and "interpreter-exec INTERP". */ | |
98 | const char *name; | |
99 | ||
100 | /* The function that creates the interpreter. */ | |
101 | interp_factory_func func; | |
102 | }; | |
103 | ||
104 | typedef struct interp_factory *interp_factory_p; | |
105 | DEF_VEC_P(interp_factory_p); | |
106 | ||
107 | /* The registered interpreter factories. */ | |
108 | static VEC(interp_factory_p) *interpreter_factories = NULL; | |
109 | ||
110 | /* See interps.h. */ | |
111 | ||
112 | void | |
113 | interp_factory_register (const char *name, interp_factory_func func) | |
114 | { | |
115 | struct interp_factory *f; | |
116 | int ix; | |
117 | ||
118 | /* Assert that no factory for NAME is already registered. */ | |
119 | for (ix = 0; | |
120 | VEC_iterate (interp_factory_p, interpreter_factories, ix, f); | |
121 | ++ix) | |
122 | if (strcmp (f->name, name) == 0) | |
123 | { | |
124 | internal_error (__FILE__, __LINE__, | |
125 | _("interpreter factory already registered: \"%s\"\n"), | |
126 | name); | |
127 | } | |
128 | ||
129 | f = XNEW (struct interp_factory); | |
130 | f->name = name; | |
131 | f->func = func; | |
132 | VEC_safe_push (interp_factory_p, interpreter_factories, f); | |
133 | } | |
134 | ||
4a8f6654 AC |
135 | /* Add interpreter INTERP to the gdb interpreter list. The |
136 | interpreter must not have previously been added. */ | |
137 | void | |
8322445e | 138 | interp_add (struct ui *ui, struct interp *interp) |
4a8f6654 | 139 | { |
8322445e | 140 | struct ui_interp_info *ui_interp = get_interp_info (ui); |
cb814510 | 141 | |
8322445e | 142 | gdb_assert (interp_lookup_existing (ui, interp->name) == NULL); |
4a8f6654 | 143 | |
cb814510 PA |
144 | interp->next = ui_interp->interp_list; |
145 | ui_interp->interp_list = interp; | |
4a8f6654 AC |
146 | } |
147 | ||
148 | /* This sets the current interpreter to be INTERP. If INTERP has not | |
d6f9b0fb | 149 | been initialized, then this will also run the init method. |
683f2885 VP |
150 | |
151 | The TOP_LEVEL parameter tells if this new interpreter is | |
152 | the top-level one. The top-level is what is requested | |
153 | on the command line, and is responsible for reporting general | |
154 | notification about target state changes. For example, if | |
155 | MI is the top-level interpreter, then it will always report | |
156 | events such as target stops and new thread creation, even if they | |
157 | are caused by CLI commands. */ | |
d6f9b0fb PA |
158 | |
159 | void | |
160 | interp_set (struct interp *interp, bool top_level) | |
4a8f6654 | 161 | { |
cb814510 PA |
162 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
163 | struct interp *old_interp = ui_interp->current_interpreter; | |
4a8f6654 | 164 | int first_time = 0; |
4a8f6654 AC |
165 | char buffer[64]; |
166 | ||
683f2885 VP |
167 | /* If we already have an interpreter, then trying to |
168 | set top level interpreter is kinda pointless. */ | |
cb814510 PA |
169 | gdb_assert (!top_level || !ui_interp->current_interpreter); |
170 | gdb_assert (!top_level || !ui_interp->top_level_interpreter); | |
683f2885 | 171 | |
cb814510 | 172 | if (old_interp != NULL) |
4a8f6654 | 173 | { |
112e8700 | 174 | current_uiout->flush (); |
d6f9b0fb | 175 | old_interp->suspend (); |
4a8f6654 AC |
176 | } |
177 | else | |
178 | { | |
179 | first_time = 1; | |
180 | } | |
181 | ||
cb814510 | 182 | ui_interp->current_interpreter = interp; |
683f2885 | 183 | if (top_level) |
cb814510 | 184 | ui_interp->top_level_interpreter = interp; |
4a8f6654 AC |
185 | |
186 | /* We use interpreter_p for the "set interpreter" variable, so we need | |
1777feb0 | 187 | to make sure we have a malloc'ed copy for the set command to free. */ |
4a8f6654 | 188 | if (interpreter_p != NULL |
cb814510 | 189 | && strcmp (interp->name, interpreter_p) != 0) |
4a8f6654 AC |
190 | { |
191 | xfree (interpreter_p); | |
192 | ||
cb814510 | 193 | interpreter_p = xstrdup (interp->name); |
4a8f6654 AC |
194 | } |
195 | ||
d6f9b0fb | 196 | /* Run the init proc. */ |
4a8f6654 AC |
197 | if (!interp->inited) |
198 | { | |
d6f9b0fb PA |
199 | interp->init (top_level); |
200 | interp->inited = true; | |
4a8f6654 AC |
201 | } |
202 | ||
4801a9a3 | 203 | /* Do this only after the interpreter is initialized. */ |
d6f9b0fb | 204 | current_uiout = interp->interp_ui_out (); |
4801a9a3 | 205 | |
907d819a | 206 | /* Clear out any installed interpreter hooks/event handlers. */ |
4a8f6654 AC |
207 | clear_interpreter_hooks (); |
208 | ||
d6f9b0fb | 209 | interp->resume (); |
4a8f6654 | 210 | |
92bcb5f9 | 211 | if (!first_time && !interp_quiet_p (interp)) |
4a8f6654 | 212 | { |
92bcb5f9 PA |
213 | xsnprintf (buffer, sizeof (buffer), |
214 | "Switching to interpreter \"%.24s\".\n", interp->name); | |
112e8700 | 215 | current_uiout->text (buffer); |
4a8f6654 | 216 | } |
4a8f6654 AC |
217 | } |
218 | ||
8322445e PA |
219 | /* Look up the interpreter for NAME. If no such interpreter exists, |
220 | return NULL, otherwise return a pointer to the interpreter. */ | |
221 | ||
222 | static struct interp * | |
223 | interp_lookup_existing (struct ui *ui, const char *name) | |
4a8f6654 | 224 | { |
8322445e | 225 | struct ui_interp_info *ui_interp = get_interp_info (ui); |
4a8f6654 AC |
226 | struct interp *interp; |
227 | ||
cb814510 PA |
228 | for (interp = ui_interp->interp_list; |
229 | interp != NULL; | |
230 | interp = interp->next) | |
4a8f6654 AC |
231 | { |
232 | if (strcmp (interp->name, name) == 0) | |
233 | return interp; | |
234 | } | |
235 | ||
236 | return NULL; | |
237 | } | |
238 | ||
8322445e PA |
239 | /* See interps.h. */ |
240 | ||
241 | struct interp * | |
242 | interp_lookup (struct ui *ui, const char *name) | |
243 | { | |
244 | struct interp_factory *factory; | |
245 | struct interp *interp; | |
246 | int ix; | |
247 | ||
248 | if (name == NULL || strlen (name) == 0) | |
249 | return NULL; | |
250 | ||
251 | /* Only create each interpreter once per top level. */ | |
252 | interp = interp_lookup_existing (ui, name); | |
253 | if (interp != NULL) | |
254 | return interp; | |
255 | ||
256 | for (ix = 0; | |
257 | VEC_iterate (interp_factory_p, interpreter_factories, ix, factory); | |
258 | ++ix) | |
259 | if (strcmp (factory->name, name) == 0) | |
260 | { | |
261 | interp = factory->func (name); | |
262 | interp_add (ui, interp); | |
263 | return interp; | |
264 | } | |
265 | ||
266 | return NULL; | |
267 | } | |
268 | ||
60eb5395 PA |
269 | /* See interps.h. */ |
270 | ||
271 | void | |
272 | set_top_level_interpreter (const char *name) | |
273 | { | |
274 | /* Find it. */ | |
275 | struct interp *interp = interp_lookup (current_ui, name); | |
276 | ||
277 | if (interp == NULL) | |
278 | error (_("Interpreter `%s' unrecognized"), name); | |
279 | /* Install it. */ | |
d6f9b0fb | 280 | interp_set (interp, true); |
60eb5395 PA |
281 | } |
282 | ||
1777feb0 | 283 | /* Returns the current interpreter. */ |
4a8f6654 AC |
284 | |
285 | struct ui_out * | |
286 | interp_ui_out (struct interp *interp) | |
287 | { | |
cb814510 | 288 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
4801a9a3 | 289 | |
cb814510 PA |
290 | if (interp == NULL) |
291 | interp = ui_interp->current_interpreter; | |
d6f9b0fb | 292 | return interp->interp_ui_out (); |
4801a9a3 PA |
293 | } |
294 | ||
616268b6 PA |
295 | void |
296 | current_interp_set_logging (ui_file_up logfile, | |
297 | bool logging_redirect) | |
37ce89eb | 298 | { |
cb814510 PA |
299 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
300 | struct interp *interp = ui_interp->current_interpreter; | |
301 | ||
d6f9b0fb | 302 | return interp->set_logging (std::move (logfile), logging_redirect); |
37ce89eb SS |
303 | } |
304 | ||
c41535fd EZ |
305 | /* Temporarily overrides the current interpreter. */ |
306 | struct interp * | |
307 | interp_set_temp (const char *name) | |
308 | { | |
cb814510 | 309 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
8322445e | 310 | struct interp *interp = interp_lookup (current_ui, name); |
cb814510 | 311 | struct interp *old_interp = ui_interp->current_interpreter; |
c41535fd EZ |
312 | |
313 | if (interp) | |
cb814510 | 314 | ui_interp->current_interpreter = interp; |
c41535fd EZ |
315 | return old_interp; |
316 | } | |
317 | ||
4801a9a3 PA |
318 | /* Returns the interpreter's name. */ |
319 | ||
320 | const char * | |
321 | interp_name (struct interp *interp) | |
322 | { | |
323 | return interp->name; | |
4a8f6654 AC |
324 | } |
325 | ||
1777feb0 | 326 | /* Returns true if the current interp is the passed in name. */ |
4a8f6654 AC |
327 | int |
328 | current_interp_named_p (const char *interp_name) | |
329 | { | |
cb814510 PA |
330 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
331 | struct interp *interp = ui_interp->current_interpreter; | |
332 | ||
333 | if (interp != NULL) | |
334 | return (strcmp (interp->name, interp_name) == 0); | |
4a8f6654 AC |
335 | |
336 | return 0; | |
337 | } | |
338 | ||
17b2616c PA |
339 | /* The interpreter that was active when a command was executed. |
340 | Normally that'd always be CURRENT_INTERPRETER, except that MI's | |
341 | -interpreter-exec command doesn't actually flip the current | |
342 | interpreter when running its sub-command. The | |
343 | `command_interpreter' global tracks when interp_exec is called | |
344 | (IOW, when -interpreter-exec is called). If that is set, it is | |
345 | INTERP in '-interpreter-exec INTERP "CMD"' or in 'interpreter-exec | |
346 | INTERP "CMD". Otherwise, interp_exec isn't active, and so the | |
347 | interpreter running the command is the current interpreter. */ | |
348 | ||
349 | struct interp * | |
350 | command_interp (void) | |
351 | { | |
cb814510 PA |
352 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
353 | ||
354 | if (ui_interp->command_interpreter != NULL) | |
355 | return ui_interp->command_interpreter; | |
17b2616c | 356 | else |
cb814510 | 357 | return ui_interp->current_interpreter; |
17b2616c PA |
358 | } |
359 | ||
b2d86570 PA |
360 | /* See interps.h. */ |
361 | ||
4a8f6654 | 362 | void |
b2d86570 | 363 | interp_pre_command_loop (struct interp *interp) |
4a8f6654 | 364 | { |
b2d86570 | 365 | gdb_assert (interp != NULL); |
4d09c5b4 | 366 | |
d6f9b0fb | 367 | interp->pre_command_loop (); |
4a8f6654 AC |
368 | } |
369 | ||
3c216924 PA |
370 | /* See interp.h */ |
371 | ||
372 | int | |
373 | interp_supports_command_editing (struct interp *interp) | |
374 | { | |
d6f9b0fb | 375 | return interp->supports_command_editing (); |
3c216924 PA |
376 | } |
377 | ||
4a8f6654 AC |
378 | int |
379 | interp_quiet_p (struct interp *interp) | |
380 | { | |
cb814510 PA |
381 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
382 | ||
4a8f6654 AC |
383 | if (interp != NULL) |
384 | return interp->quiet_p; | |
385 | else | |
cb814510 | 386 | return ui_interp->current_interpreter->quiet_p; |
4a8f6654 AC |
387 | } |
388 | ||
b9362cc7 | 389 | static int |
4a8f6654 AC |
390 | interp_set_quiet (struct interp *interp, int quiet) |
391 | { | |
392 | int old_val = interp->quiet_p; | |
abbb1732 | 393 | |
4a8f6654 AC |
394 | interp->quiet_p = quiet; |
395 | return old_val; | |
396 | } | |
397 | ||
398 | /* interp_exec - This executes COMMAND_STR in the current | |
1777feb0 | 399 | interpreter. */ |
4a8f6654 | 400 | |
71fff37b | 401 | struct gdb_exception |
4a8f6654 AC |
402 | interp_exec (struct interp *interp, const char *command_str) |
403 | { | |
cb814510 PA |
404 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
405 | ||
17b2616c PA |
406 | struct gdb_exception ex; |
407 | struct interp *save_command_interp; | |
408 | ||
17b2616c | 409 | /* See `command_interp' for why we do this. */ |
cb814510 PA |
410 | save_command_interp = ui_interp->command_interpreter; |
411 | ui_interp->command_interpreter = interp; | |
17b2616c | 412 | |
d6f9b0fb | 413 | ex = interp->exec (command_str); |
17b2616c | 414 | |
cb814510 | 415 | ui_interp->command_interpreter = save_command_interp; |
17b2616c PA |
416 | |
417 | return ex; | |
4a8f6654 AC |
418 | } |
419 | ||
907d819a MS |
420 | /* A convenience routine that nulls out all the common command hooks. |
421 | Use it when removing your interpreter in its suspend proc. */ | |
4a8f6654 | 422 | void |
11308a41 | 423 | clear_interpreter_hooks (void) |
4a8f6654 | 424 | { |
9a4105ab | 425 | deprecated_print_frame_info_listing_hook = 0; |
4a8f6654 | 426 | /*print_frame_more_info_hook = 0; */ |
9a4105ab AC |
427 | deprecated_query_hook = 0; |
428 | deprecated_warning_hook = 0; | |
9a4105ab | 429 | deprecated_interactive_hook = 0; |
9a4105ab AC |
430 | deprecated_readline_begin_hook = 0; |
431 | deprecated_readline_hook = 0; | |
432 | deprecated_readline_end_hook = 0; | |
9a4105ab AC |
433 | deprecated_context_hook = 0; |
434 | deprecated_target_wait_hook = 0; | |
435 | deprecated_call_command_hook = 0; | |
9a4105ab | 436 | deprecated_error_begin_hook = 0; |
4a8f6654 AC |
437 | } |
438 | ||
b9362cc7 | 439 | static void |
4a8f6654 AC |
440 | interpreter_exec_cmd (char *args, int from_tty) |
441 | { | |
cb814510 | 442 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
4a8f6654 AC |
443 | struct interp *old_interp, *interp_to_use; |
444 | char **prules = NULL; | |
445 | char **trule = NULL; | |
446 | unsigned int nrules; | |
447 | unsigned int i; | |
448 | int old_quiet, use_quiet; | |
5b3fca71 | 449 | struct cleanup *cleanup; |
4a8f6654 | 450 | |
d1a41061 PP |
451 | if (args == NULL) |
452 | error_no_arg (_("interpreter-exec command")); | |
453 | ||
454 | prules = gdb_buildargv (args); | |
5b3fca71 | 455 | cleanup = make_cleanup_freeargv (prules); |
4a8f6654 AC |
456 | |
457 | nrules = 0; | |
d1a41061 PP |
458 | for (trule = prules; *trule != NULL; trule++) |
459 | nrules++; | |
4a8f6654 AC |
460 | |
461 | if (nrules < 2) | |
8a3fe4f8 | 462 | error (_("usage: interpreter-exec <interpreter> [ <command> ... ]")); |
4a8f6654 | 463 | |
cb814510 | 464 | old_interp = ui_interp->current_interpreter; |
4a8f6654 | 465 | |
8322445e | 466 | interp_to_use = interp_lookup (current_ui, prules[0]); |
4a8f6654 | 467 | if (interp_to_use == NULL) |
8a3fe4f8 | 468 | error (_("Could not find interpreter \"%s\"."), prules[0]); |
4a8f6654 | 469 | |
1777feb0 | 470 | /* Temporarily set interpreters quiet. */ |
4a8f6654 AC |
471 | old_quiet = interp_set_quiet (old_interp, 1); |
472 | use_quiet = interp_set_quiet (interp_to_use, 1); | |
473 | ||
d6f9b0fb | 474 | interp_set (interp_to_use, false); |
4a8f6654 AC |
475 | |
476 | for (i = 1; i < nrules; i++) | |
477 | { | |
71fff37b | 478 | struct gdb_exception e = interp_exec (interp_to_use, prules[i]); |
abbb1732 | 479 | |
a7479e7e | 480 | if (e.reason < 0) |
4a8f6654 | 481 | { |
683f2885 | 482 | interp_set (old_interp, 0); |
04d1f770 DJ |
483 | interp_set_quiet (interp_to_use, use_quiet); |
484 | interp_set_quiet (old_interp, old_quiet); | |
8a3fe4f8 | 485 | error (_("error in command: \"%s\"."), prules[i]); |
4a8f6654 AC |
486 | } |
487 | } | |
488 | ||
683f2885 | 489 | interp_set (old_interp, 0); |
4a8f6654 AC |
490 | interp_set_quiet (interp_to_use, use_quiet); |
491 | interp_set_quiet (old_interp, old_quiet); | |
5b3fca71 TT |
492 | |
493 | do_cleanups (cleanup); | |
4a8f6654 AC |
494 | } |
495 | ||
60eb5395 PA |
496 | /* See interps.h. */ |
497 | ||
498 | VEC (char_ptr) * | |
6f937416 PA |
499 | interpreter_completer (struct cmd_list_element *ignore, |
500 | const char *text, const char *word) | |
4a8f6654 | 501 | { |
8322445e | 502 | struct interp_factory *interp; |
4a8f6654 | 503 | int textlen; |
49c4e619 | 504 | VEC (char_ptr) *matches = NULL; |
8322445e | 505 | int ix; |
4a8f6654 | 506 | |
4a8f6654 | 507 | textlen = strlen (text); |
8322445e PA |
508 | for (ix = 0; |
509 | VEC_iterate (interp_factory_p, interpreter_factories, ix, interp); | |
510 | ++ix) | |
4a8f6654 AC |
511 | { |
512 | if (strncmp (interp->name, text, textlen) == 0) | |
513 | { | |
49c4e619 TT |
514 | char *match; |
515 | ||
516 | match = (char *) xmalloc (strlen (word) + strlen (interp->name) + 1); | |
4a8f6654 | 517 | if (word == text) |
49c4e619 | 518 | strcpy (match, interp->name); |
4a8f6654 AC |
519 | else if (word > text) |
520 | { | |
1777feb0 | 521 | /* Return some portion of interp->name. */ |
49c4e619 | 522 | strcpy (match, interp->name + (word - text)); |
4a8f6654 AC |
523 | } |
524 | else | |
525 | { | |
1777feb0 | 526 | /* Return some of text plus interp->name. */ |
49c4e619 TT |
527 | strncpy (match, word, text - word); |
528 | match[text - word] = '\0'; | |
529 | strcat (match, interp->name); | |
4a8f6654 | 530 | } |
49c4e619 | 531 | VEC_safe_push (char_ptr, matches, match); |
4a8f6654 AC |
532 | } |
533 | } | |
534 | ||
4a8f6654 AC |
535 | return matches; |
536 | } | |
537 | ||
eb18d289 NR |
538 | struct interp * |
539 | top_level_interpreter (void) | |
540 | { | |
cb814510 PA |
541 | struct ui_interp_info *ui_interp = get_current_interp_info (); |
542 | ||
543 | return ui_interp->top_level_interpreter; | |
eb18d289 NR |
544 | } |
545 | ||
9204d692 PA |
546 | /* See interps.h. */ |
547 | ||
548 | struct interp * | |
549 | current_interpreter (void) | |
550 | { | |
551 | struct ui_interp_info *ui_interp = get_interp_info (current_ui); | |
552 | ||
553 | return ui_interp->current_interpreter; | |
554 | } | |
555 | ||
4a8f6654 AC |
556 | /* This just adds the "interpreter-exec" command. */ |
557 | void | |
558 | _initialize_interpreter (void) | |
559 | { | |
560 | struct cmd_list_element *c; | |
561 | ||
562 | c = add_cmd ("interpreter-exec", class_support, | |
1a966eab AC |
563 | interpreter_exec_cmd, _("\ |
564 | Execute a command in an interpreter. It takes two arguments:\n\ | |
4a8f6654 | 565 | The first argument is the name of the interpreter to use.\n\ |
1a966eab | 566 | The second argument is the command to execute.\n"), &cmdlist); |
4a8f6654 AC |
567 | set_cmd_completer (c, interpreter_completer); |
568 | } |