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d318976c | 1 | /* GDB CLI command scripting. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
d318976c FN |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
d318976c FN |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
d318976c FN |
19 | |
20 | #include "defs.h" | |
21 | #include "value.h" | |
22 | #include "language.h" /* For value_true */ | |
23 | #include <ctype.h> | |
24 | ||
d318976c | 25 | #include "ui-out.h" |
d318976c | 26 | #include "top.h" |
40c03ae8 | 27 | #include "breakpoint.h" |
d318976c FN |
28 | #include "cli/cli-cmds.h" |
29 | #include "cli/cli-decode.h" | |
30 | #include "cli/cli-script.h" | |
31 | ||
6dddc817 | 32 | #include "extension.h" |
b4a14fd0 | 33 | #include "interps.h" |
bb2ec1b3 | 34 | #include "compile/compile.h" |
d57a3c85 | 35 | |
ebcd3b23 | 36 | /* Prototypes for local functions. */ |
d318976c | 37 | |
d318976c | 38 | static enum command_control_type |
a58d7472 | 39 | recurse_read_control_structure (char * (*read_next_line_func) (void), |
a7bdde9e VP |
40 | struct command_line *current_cmd, |
41 | void (*validator)(char *, void *), | |
42 | void *closure); | |
d318976c FN |
43 | |
44 | static char *insert_args (char *line); | |
45 | ||
46 | static struct cleanup * setup_user_args (char *p); | |
47 | ||
a58d7472 | 48 | static char *read_next_line (void); |
3c1179ff | 49 | |
16026cd7 | 50 | /* Level of control structure when reading. */ |
d318976c FN |
51 | static int control_level; |
52 | ||
16026cd7 AS |
53 | /* Level of control structure when executing. */ |
54 | static int command_nest_depth = 1; | |
55 | ||
56 | /* This is to prevent certain commands being printed twice. */ | |
57 | static int suppress_next_print_command_trace = 0; | |
58 | ||
d318976c FN |
59 | /* Structure for arguments to user defined functions. */ |
60 | #define MAXUSERARGS 10 | |
61 | struct user_args | |
62 | { | |
63 | struct user_args *next; | |
e28493f2 | 64 | /* It is necessary to store a malloced copy of the command line to |
ebcd3b23 MS |
65 | ensure that the arguments are not overwritten before they are |
66 | used. */ | |
e28493f2 | 67 | char *command; |
d318976c FN |
68 | struct |
69 | { | |
70 | char *arg; | |
71 | int len; | |
72 | } | |
73 | a[MAXUSERARGS]; | |
74 | int count; | |
75 | } | |
76 | *user_args; | |
77 | ||
78 | \f | |
1e9c71b8 DE |
79 | /* Return non-zero if TYPE is a multi-line command (i.e., is terminated |
80 | by "end"). */ | |
81 | ||
82 | static int | |
83 | multi_line_command_p (enum command_control_type type) | |
84 | { | |
85 | switch (type) | |
86 | { | |
87 | case if_control: | |
88 | case while_control: | |
89 | case while_stepping_control: | |
90 | case commands_control: | |
bb2ec1b3 | 91 | case compile_control: |
1e9c71b8 | 92 | case python_control: |
ed3ef339 | 93 | case guile_control: |
1e9c71b8 DE |
94 | return 1; |
95 | default: | |
96 | return 0; | |
97 | } | |
98 | } | |
99 | ||
d318976c FN |
100 | /* Allocate, initialize a new command line structure for one of the |
101 | control commands (if/while). */ | |
102 | ||
103 | static struct command_line * | |
104 | build_command_line (enum command_control_type type, char *args) | |
105 | { | |
106 | struct command_line *cmd; | |
107 | ||
40c03ae8 | 108 | if (args == NULL && (type == if_control || type == while_control)) |
8a3fe4f8 | 109 | error (_("if/while commands require arguments.")); |
c8c12293 | 110 | gdb_assert (args != NULL); |
d318976c FN |
111 | |
112 | cmd = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
113 | cmd->next = NULL; | |
114 | cmd->control_type = type; | |
115 | ||
116 | cmd->body_count = 1; | |
117 | cmd->body_list | |
118 | = (struct command_line **) xmalloc (sizeof (struct command_line *) | |
119 | * cmd->body_count); | |
120 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); | |
1b36a34b | 121 | cmd->line = xstrdup (args); |
dd3526aa | 122 | |
d318976c FN |
123 | return cmd; |
124 | } | |
125 | ||
126 | /* Build and return a new command structure for the control commands | |
127 | such as "if" and "while". */ | |
128 | ||
d57a3c85 | 129 | struct command_line * |
d318976c FN |
130 | get_command_line (enum command_control_type type, char *arg) |
131 | { | |
132 | struct command_line *cmd; | |
133 | struct cleanup *old_chain = NULL; | |
134 | ||
135 | /* Allocate and build a new command line structure. */ | |
136 | cmd = build_command_line (type, arg); | |
137 | ||
138 | old_chain = make_cleanup_free_command_lines (&cmd); | |
139 | ||
140 | /* Read in the body of this command. */ | |
a7bdde9e VP |
141 | if (recurse_read_control_structure (read_next_line, cmd, 0, 0) |
142 | == invalid_control) | |
d318976c | 143 | { |
40c03ae8 | 144 | warning (_("Error reading in canned sequence of commands.")); |
d318976c FN |
145 | do_cleanups (old_chain); |
146 | return NULL; | |
147 | } | |
148 | ||
149 | discard_cleanups (old_chain); | |
150 | return cmd; | |
151 | } | |
152 | ||
153 | /* Recursively print a command (including full control structures). */ | |
8926118c | 154 | |
d318976c FN |
155 | void |
156 | print_command_lines (struct ui_out *uiout, struct command_line *cmd, | |
157 | unsigned int depth) | |
158 | { | |
159 | struct command_line *list; | |
160 | ||
161 | list = cmd; | |
162 | while (list) | |
163 | { | |
d318976c FN |
164 | if (depth) |
165 | ui_out_spaces (uiout, 2 * depth); | |
166 | ||
167 | /* A simple command, print it and continue. */ | |
168 | if (list->control_type == simple_control) | |
169 | { | |
170 | ui_out_field_string (uiout, NULL, list->line); | |
171 | ui_out_text (uiout, "\n"); | |
172 | list = list->next; | |
173 | continue; | |
174 | } | |
175 | ||
176 | /* loop_continue to jump to the start of a while loop, print it | |
177 | and continue. */ | |
178 | if (list->control_type == continue_control) | |
179 | { | |
180 | ui_out_field_string (uiout, NULL, "loop_continue"); | |
181 | ui_out_text (uiout, "\n"); | |
182 | list = list->next; | |
183 | continue; | |
184 | } | |
185 | ||
ebcd3b23 MS |
186 | /* loop_break to break out of a while loop, print it and |
187 | continue. */ | |
d318976c FN |
188 | if (list->control_type == break_control) |
189 | { | |
190 | ui_out_field_string (uiout, NULL, "loop_break"); | |
191 | ui_out_text (uiout, "\n"); | |
192 | list = list->next; | |
193 | continue; | |
194 | } | |
195 | ||
ebcd3b23 MS |
196 | /* A while command. Recursively print its subcommands and |
197 | continue. */ | |
a7bdde9e VP |
198 | if (list->control_type == while_control |
199 | || list->control_type == while_stepping_control) | |
d318976c | 200 | { |
ebcd3b23 MS |
201 | /* For while-stepping, the line includes the 'while-stepping' |
202 | token. See comment in process_next_line for explanation. | |
203 | Here, take care not print 'while-stepping' twice. */ | |
a7bdde9e VP |
204 | if (list->control_type == while_control) |
205 | ui_out_field_fmt (uiout, NULL, "while %s", list->line); | |
206 | else | |
207 | ui_out_field_string (uiout, NULL, list->line); | |
d318976c FN |
208 | ui_out_text (uiout, "\n"); |
209 | print_command_lines (uiout, *list->body_list, depth + 1); | |
d318976c FN |
210 | if (depth) |
211 | ui_out_spaces (uiout, 2 * depth); | |
e6ccd35f JSC |
212 | ui_out_field_string (uiout, NULL, "end"); |
213 | ui_out_text (uiout, "\n"); | |
d318976c FN |
214 | list = list->next; |
215 | continue; | |
216 | } | |
217 | ||
ebcd3b23 MS |
218 | /* An if command. Recursively print both arms before |
219 | continueing. */ | |
d318976c FN |
220 | if (list->control_type == if_control) |
221 | { | |
d318976c FN |
222 | ui_out_field_fmt (uiout, NULL, "if %s", list->line); |
223 | ui_out_text (uiout, "\n"); | |
ebcd3b23 | 224 | /* The true arm. */ |
d318976c FN |
225 | print_command_lines (uiout, list->body_list[0], depth + 1); |
226 | ||
227 | /* Show the false arm if it exists. */ | |
228 | if (list->body_count == 2) | |
229 | { | |
230 | if (depth) | |
231 | ui_out_spaces (uiout, 2 * depth); | |
232 | ui_out_field_string (uiout, NULL, "else"); | |
e6ccd35f | 233 | ui_out_text (uiout, "\n"); |
d318976c FN |
234 | print_command_lines (uiout, list->body_list[1], depth + 1); |
235 | } | |
236 | ||
d318976c FN |
237 | if (depth) |
238 | ui_out_spaces (uiout, 2 * depth); | |
e6ccd35f JSC |
239 | ui_out_field_string (uiout, NULL, "end"); |
240 | ui_out_text (uiout, "\n"); | |
d318976c FN |
241 | list = list->next; |
242 | continue; | |
243 | } | |
244 | ||
ebcd3b23 MS |
245 | /* A commands command. Print the breakpoint commands and |
246 | continue. */ | |
40c03ae8 EZ |
247 | if (list->control_type == commands_control) |
248 | { | |
249 | if (*(list->line)) | |
250 | ui_out_field_fmt (uiout, NULL, "commands %s", list->line); | |
251 | else | |
252 | ui_out_field_string (uiout, NULL, "commands"); | |
253 | ui_out_text (uiout, "\n"); | |
254 | print_command_lines (uiout, *list->body_list, depth + 1); | |
255 | if (depth) | |
256 | ui_out_spaces (uiout, 2 * depth); | |
257 | ui_out_field_string (uiout, NULL, "end"); | |
258 | ui_out_text (uiout, "\n"); | |
259 | list = list->next; | |
260 | continue; | |
261 | } | |
262 | ||
d57a3c85 TJB |
263 | if (list->control_type == python_control) |
264 | { | |
265 | ui_out_field_string (uiout, NULL, "python"); | |
266 | ui_out_text (uiout, "\n"); | |
267 | /* Don't indent python code at all. */ | |
268 | print_command_lines (uiout, *list->body_list, 0); | |
269 | if (depth) | |
270 | ui_out_spaces (uiout, 2 * depth); | |
271 | ui_out_field_string (uiout, NULL, "end"); | |
272 | ui_out_text (uiout, "\n"); | |
273 | list = list->next; | |
274 | continue; | |
275 | } | |
276 | ||
bb2ec1b3 TT |
277 | if (list->control_type == compile_control) |
278 | { | |
279 | ui_out_field_string (uiout, NULL, "compile expression"); | |
280 | ui_out_text (uiout, "\n"); | |
281 | print_command_lines (uiout, *list->body_list, 0); | |
282 | if (depth) | |
283 | ui_out_spaces (uiout, 2 * depth); | |
284 | ui_out_field_string (uiout, NULL, "end"); | |
285 | ui_out_text (uiout, "\n"); | |
286 | list = list->next; | |
287 | continue; | |
288 | } | |
289 | ||
ed3ef339 DE |
290 | if (list->control_type == guile_control) |
291 | { | |
292 | ui_out_field_string (uiout, NULL, "guile"); | |
293 | ui_out_text (uiout, "\n"); | |
294 | print_command_lines (uiout, *list->body_list, depth + 1); | |
295 | if (depth) | |
296 | ui_out_spaces (uiout, 2 * depth); | |
297 | ui_out_field_string (uiout, NULL, "end"); | |
298 | ui_out_text (uiout, "\n"); | |
299 | list = list->next; | |
300 | continue; | |
301 | } | |
302 | ||
ebcd3b23 | 303 | /* Ignore illegal command type and try next. */ |
d318976c FN |
304 | list = list->next; |
305 | } /* while (list) */ | |
306 | } | |
d318976c | 307 | |
5913bcb0 AC |
308 | /* Handle pre-post hooks. */ |
309 | ||
b9362cc7 | 310 | static void |
5913bcb0 AC |
311 | clear_hook_in_cleanup (void *data) |
312 | { | |
313 | struct cmd_list_element *c = data; | |
cdb27c12 | 314 | |
ebcd3b23 | 315 | c->hook_in = 0; /* Allow hook to work again once it is complete. */ |
5913bcb0 AC |
316 | } |
317 | ||
318 | void | |
319 | execute_cmd_pre_hook (struct cmd_list_element *c) | |
320 | { | |
321 | if ((c->hook_pre) && (!c->hook_in)) | |
322 | { | |
323 | struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c); | |
ebcd3b23 | 324 | c->hook_in = 1; /* Prevent recursive hooking. */ |
5913bcb0 AC |
325 | execute_user_command (c->hook_pre, (char *) 0); |
326 | do_cleanups (cleanups); | |
327 | } | |
328 | } | |
329 | ||
330 | void | |
331 | execute_cmd_post_hook (struct cmd_list_element *c) | |
332 | { | |
333 | if ((c->hook_post) && (!c->hook_in)) | |
334 | { | |
335 | struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c); | |
cdb27c12 | 336 | |
ebcd3b23 | 337 | c->hook_in = 1; /* Prevent recursive hooking. */ |
5913bcb0 AC |
338 | execute_user_command (c->hook_post, (char *) 0); |
339 | do_cleanups (cleanups); | |
340 | } | |
341 | } | |
342 | ||
d318976c | 343 | /* Execute the command in CMD. */ |
b9362cc7 | 344 | static void |
20f01a46 DH |
345 | do_restore_user_call_depth (void * call_depth) |
346 | { | |
cdb27c12 MS |
347 | int *depth = call_depth; |
348 | ||
698ba934 DJ |
349 | (*depth)--; |
350 | if ((*depth) == 0) | |
351 | in_user_command = 0; | |
20f01a46 DH |
352 | } |
353 | ||
d318976c FN |
354 | |
355 | void | |
356 | execute_user_command (struct cmd_list_element *c, char *args) | |
357 | { | |
d5b5ac79 | 358 | struct command_line *cmdlines; |
d318976c FN |
359 | struct cleanup *old_chain; |
360 | enum command_control_type ret; | |
20f01a46 | 361 | static int user_call_depth = 0; |
883b9c6c | 362 | extern unsigned int max_user_call_depth; |
d318976c | 363 | |
d318976c FN |
364 | cmdlines = c->user_commands; |
365 | if (cmdlines == 0) | |
366 | /* Null command */ | |
367 | return; | |
368 | ||
5fe41fbf TT |
369 | old_chain = setup_user_args (args); |
370 | ||
20f01a46 | 371 | if (++user_call_depth > max_user_call_depth) |
8a3fe4f8 | 372 | error (_("Max user call depth exceeded -- command aborted.")); |
20f01a46 | 373 | |
698ba934 | 374 | make_cleanup (do_restore_user_call_depth, &user_call_depth); |
20f01a46 | 375 | |
d318976c FN |
376 | /* Set the instream to 0, indicating execution of a |
377 | user-defined function. */ | |
698ba934 | 378 | make_cleanup (do_restore_instream_cleanup, instream); |
d318976c | 379 | instream = (FILE *) 0; |
698ba934 DJ |
380 | |
381 | /* Also set the global in_user_command, so that NULL instream is | |
382 | not confused with Insight. */ | |
383 | in_user_command = 1; | |
384 | ||
b4a14fd0 PA |
385 | make_cleanup_restore_integer (&interpreter_async); |
386 | interpreter_async = 0; | |
387 | ||
8625200f | 388 | command_nest_depth++; |
d318976c FN |
389 | while (cmdlines) |
390 | { | |
391 | ret = execute_control_command (cmdlines); | |
392 | if (ret != simple_control && ret != break_control) | |
393 | { | |
40c03ae8 | 394 | warning (_("Error executing canned sequence of commands.")); |
d318976c FN |
395 | break; |
396 | } | |
397 | cmdlines = cmdlines->next; | |
398 | } | |
8625200f | 399 | command_nest_depth--; |
d318976c FN |
400 | do_cleanups (old_chain); |
401 | } | |
402 | ||
ebcd3b23 MS |
403 | /* This function is called every time GDB prints a prompt. It ensures |
404 | that errors and the like do not confuse the command tracing. */ | |
16026cd7 AS |
405 | |
406 | void | |
407 | reset_command_nest_depth (void) | |
408 | { | |
409 | command_nest_depth = 1; | |
410 | ||
411 | /* Just in case. */ | |
412 | suppress_next_print_command_trace = 0; | |
413 | } | |
414 | ||
415 | /* Print the command, prefixed with '+' to represent the call depth. | |
416 | This is slightly complicated because this function may be called | |
417 | from execute_command and execute_control_command. Unfortunately | |
418 | execute_command also prints the top level control commands. | |
419 | In these cases execute_command will call execute_control_command | |
420 | via while_command or if_command. Inner levels of 'if' and 'while' | |
421 | are dealt with directly. Therefore we can use these functions | |
422 | to determine whether the command has been printed already or not. */ | |
423 | void | |
424 | print_command_trace (const char *cmd) | |
425 | { | |
426 | int i; | |
427 | ||
428 | if (suppress_next_print_command_trace) | |
429 | { | |
430 | suppress_next_print_command_trace = 0; | |
431 | return; | |
432 | } | |
433 | ||
434 | if (!source_verbose && !trace_commands) | |
435 | return; | |
436 | ||
437 | for (i=0; i < command_nest_depth; i++) | |
438 | printf_filtered ("+"); | |
439 | ||
440 | printf_filtered ("%s\n", cmd); | |
441 | } | |
442 | ||
d318976c FN |
443 | enum command_control_type |
444 | execute_control_command (struct command_line *cmd) | |
445 | { | |
446 | struct expression *expr; | |
447 | struct command_line *current; | |
4d2acc65 | 448 | struct cleanup *old_chain = make_cleanup (null_cleanup, 0); |
f976f6d4 AC |
449 | struct value *val; |
450 | struct value *val_mark; | |
d318976c FN |
451 | int loop; |
452 | enum command_control_type ret; | |
453 | char *new_line; | |
454 | ||
4d2acc65 AC |
455 | /* Start by assuming failure, if a problem is detected, the code |
456 | below will simply "break" out of the switch. */ | |
457 | ret = invalid_control; | |
458 | ||
d318976c FN |
459 | switch (cmd->control_type) |
460 | { | |
461 | case simple_control: | |
462 | /* A simple command, execute it and return. */ | |
463 | new_line = insert_args (cmd->line); | |
464 | if (!new_line) | |
4d2acc65 AC |
465 | break; |
466 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
467 | execute_command (new_line, 0); |
468 | ret = cmd->control_type; | |
469 | break; | |
470 | ||
471 | case continue_control: | |
16026cd7 AS |
472 | print_command_trace ("loop_continue"); |
473 | ||
474 | /* Return for "continue", and "break" so we can either | |
475 | continue the loop at the top, or break out. */ | |
476 | ret = cmd->control_type; | |
477 | break; | |
478 | ||
d318976c | 479 | case break_control: |
16026cd7 AS |
480 | print_command_trace ("loop_break"); |
481 | ||
d318976c FN |
482 | /* Return for "continue", and "break" so we can either |
483 | continue the loop at the top, or break out. */ | |
484 | ret = cmd->control_type; | |
485 | break; | |
486 | ||
487 | case while_control: | |
488 | { | |
8c042590 PM |
489 | int len = strlen (cmd->line) + 7; |
490 | char *buffer = alloca (len); | |
cdb27c12 | 491 | |
8c042590 | 492 | xsnprintf (buffer, len, "while %s", cmd->line); |
16026cd7 AS |
493 | print_command_trace (buffer); |
494 | ||
d318976c FN |
495 | /* Parse the loop control expression for the while statement. */ |
496 | new_line = insert_args (cmd->line); | |
497 | if (!new_line) | |
4d2acc65 AC |
498 | break; |
499 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
500 | expr = parse_expression (new_line); |
501 | make_cleanup (free_current_contents, &expr); | |
502 | ||
503 | ret = simple_control; | |
504 | loop = 1; | |
505 | ||
506 | /* Keep iterating so long as the expression is true. */ | |
507 | while (loop == 1) | |
508 | { | |
509 | int cond_result; | |
510 | ||
511 | QUIT; | |
512 | ||
513 | /* Evaluate the expression. */ | |
514 | val_mark = value_mark (); | |
515 | val = evaluate_expression (expr); | |
516 | cond_result = value_true (val); | |
517 | value_free_to_mark (val_mark); | |
518 | ||
519 | /* If the value is false, then break out of the loop. */ | |
520 | if (!cond_result) | |
521 | break; | |
522 | ||
523 | /* Execute the body of the while statement. */ | |
524 | current = *cmd->body_list; | |
525 | while (current) | |
526 | { | |
16026cd7 | 527 | command_nest_depth++; |
d318976c | 528 | ret = execute_control_command (current); |
16026cd7 | 529 | command_nest_depth--; |
d318976c FN |
530 | |
531 | /* If we got an error, or a "break" command, then stop | |
532 | looping. */ | |
533 | if (ret == invalid_control || ret == break_control) | |
534 | { | |
535 | loop = 0; | |
536 | break; | |
537 | } | |
538 | ||
539 | /* If we got a "continue" command, then restart the loop | |
540 | at this point. */ | |
541 | if (ret == continue_control) | |
542 | break; | |
543 | ||
544 | /* Get the next statement. */ | |
545 | current = current->next; | |
546 | } | |
547 | } | |
548 | ||
549 | /* Reset RET so that we don't recurse the break all the way down. */ | |
550 | if (ret == break_control) | |
551 | ret = simple_control; | |
552 | ||
553 | break; | |
554 | } | |
555 | ||
556 | case if_control: | |
557 | { | |
8c042590 PM |
558 | int len = strlen (cmd->line) + 4; |
559 | char *buffer = alloca (len); | |
cdb27c12 | 560 | |
8c042590 | 561 | xsnprintf (buffer, len, "if %s", cmd->line); |
16026cd7 AS |
562 | print_command_trace (buffer); |
563 | ||
d318976c FN |
564 | new_line = insert_args (cmd->line); |
565 | if (!new_line) | |
4d2acc65 AC |
566 | break; |
567 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
568 | /* Parse the conditional for the if statement. */ |
569 | expr = parse_expression (new_line); | |
570 | make_cleanup (free_current_contents, &expr); | |
571 | ||
572 | current = NULL; | |
573 | ret = simple_control; | |
574 | ||
575 | /* Evaluate the conditional. */ | |
576 | val_mark = value_mark (); | |
577 | val = evaluate_expression (expr); | |
578 | ||
ebcd3b23 MS |
579 | /* Choose which arm to take commands from based on the value |
580 | of the conditional expression. */ | |
d318976c FN |
581 | if (value_true (val)) |
582 | current = *cmd->body_list; | |
583 | else if (cmd->body_count == 2) | |
584 | current = *(cmd->body_list + 1); | |
585 | value_free_to_mark (val_mark); | |
586 | ||
587 | /* Execute commands in the given arm. */ | |
588 | while (current) | |
589 | { | |
16026cd7 | 590 | command_nest_depth++; |
d318976c | 591 | ret = execute_control_command (current); |
16026cd7 | 592 | command_nest_depth--; |
d318976c FN |
593 | |
594 | /* If we got an error, get out. */ | |
595 | if (ret != simple_control) | |
596 | break; | |
597 | ||
598 | /* Get the next statement in the body. */ | |
599 | current = current->next; | |
600 | } | |
601 | ||
602 | break; | |
603 | } | |
1e9c71b8 | 604 | |
40c03ae8 EZ |
605 | case commands_control: |
606 | { | |
ebcd3b23 MS |
607 | /* Breakpoint commands list, record the commands in the |
608 | breakpoint's command list and return. */ | |
40c03ae8 EZ |
609 | new_line = insert_args (cmd->line); |
610 | if (!new_line) | |
611 | break; | |
612 | make_cleanup (free_current_contents, &new_line); | |
613 | ret = commands_from_control_command (new_line, cmd); | |
614 | break; | |
615 | } | |
1e9c71b8 | 616 | |
bb2ec1b3 TT |
617 | case compile_control: |
618 | eval_compile_command (cmd, NULL, cmd->control_u.compile.scope); | |
619 | ret = simple_control; | |
620 | break; | |
621 | ||
d57a3c85 | 622 | case python_control: |
ed3ef339 | 623 | case guile_control: |
d57a3c85 | 624 | { |
6dddc817 | 625 | eval_ext_lang_from_control_command (cmd); |
d57a3c85 TJB |
626 | ret = simple_control; |
627 | break; | |
628 | } | |
d318976c FN |
629 | |
630 | default: | |
40c03ae8 | 631 | warning (_("Invalid control type in canned commands structure.")); |
4d2acc65 | 632 | break; |
d318976c FN |
633 | } |
634 | ||
4d2acc65 | 635 | do_cleanups (old_chain); |
d318976c FN |
636 | |
637 | return ret; | |
638 | } | |
639 | ||
d57a3c85 | 640 | /* Like execute_control_command, but first set |
ebcd3b23 | 641 | suppress_next_print_command_trace. */ |
d57a3c85 TJB |
642 | |
643 | enum command_control_type | |
644 | execute_control_command_untraced (struct command_line *cmd) | |
645 | { | |
646 | suppress_next_print_command_trace = 1; | |
647 | return execute_control_command (cmd); | |
648 | } | |
649 | ||
650 | ||
d318976c FN |
651 | /* "while" command support. Executes a body of statements while the |
652 | loop condition is nonzero. */ | |
653 | ||
2370e853 | 654 | static void |
d318976c FN |
655 | while_command (char *arg, int from_tty) |
656 | { | |
657 | struct command_line *command = NULL; | |
b4a14fd0 | 658 | struct cleanup *old_chain; |
d318976c FN |
659 | |
660 | control_level = 1; | |
661 | command = get_command_line (while_control, arg); | |
662 | ||
663 | if (command == NULL) | |
664 | return; | |
665 | ||
b4a14fd0 PA |
666 | old_chain = make_cleanup_restore_integer (&interpreter_async); |
667 | interpreter_async = 0; | |
668 | ||
d57a3c85 | 669 | execute_control_command_untraced (command); |
d318976c | 670 | free_command_lines (&command); |
b4a14fd0 PA |
671 | |
672 | do_cleanups (old_chain); | |
d318976c FN |
673 | } |
674 | ||
675 | /* "if" command support. Execute either the true or false arm depending | |
676 | on the value of the if conditional. */ | |
677 | ||
2370e853 | 678 | static void |
d318976c FN |
679 | if_command (char *arg, int from_tty) |
680 | { | |
681 | struct command_line *command = NULL; | |
b4a14fd0 | 682 | struct cleanup *old_chain; |
d318976c FN |
683 | |
684 | control_level = 1; | |
685 | command = get_command_line (if_control, arg); | |
686 | ||
687 | if (command == NULL) | |
688 | return; | |
689 | ||
b4a14fd0 PA |
690 | old_chain = make_cleanup_restore_integer (&interpreter_async); |
691 | interpreter_async = 0; | |
692 | ||
d57a3c85 | 693 | execute_control_command_untraced (command); |
d318976c | 694 | free_command_lines (&command); |
b4a14fd0 PA |
695 | |
696 | do_cleanups (old_chain); | |
d318976c FN |
697 | } |
698 | ||
699 | /* Cleanup */ | |
700 | static void | |
701 | arg_cleanup (void *ignore) | |
702 | { | |
703 | struct user_args *oargs = user_args; | |
cdb27c12 | 704 | |
d318976c | 705 | if (!user_args) |
8e65ff28 | 706 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 707 | _("arg_cleanup called with no user args.\n")); |
d318976c FN |
708 | |
709 | user_args = user_args->next; | |
e28493f2 | 710 | xfree (oargs->command); |
b8c9b27d | 711 | xfree (oargs); |
d318976c FN |
712 | } |
713 | ||
714 | /* Bind the incomming arguments for a user defined command to | |
715 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
716 | ||
717 | static struct cleanup * | |
718 | setup_user_args (char *p) | |
719 | { | |
720 | struct user_args *args; | |
721 | struct cleanup *old_chain; | |
722 | unsigned int arg_count = 0; | |
723 | ||
724 | args = (struct user_args *) xmalloc (sizeof (struct user_args)); | |
725 | memset (args, 0, sizeof (struct user_args)); | |
726 | ||
727 | args->next = user_args; | |
728 | user_args = args; | |
729 | ||
730 | old_chain = make_cleanup (arg_cleanup, 0/*ignored*/); | |
731 | ||
732 | if (p == NULL) | |
733 | return old_chain; | |
734 | ||
e28493f2 AS |
735 | user_args->command = p = xstrdup (p); |
736 | ||
d318976c FN |
737 | while (*p) |
738 | { | |
739 | char *start_arg; | |
740 | int squote = 0; | |
741 | int dquote = 0; | |
742 | int bsquote = 0; | |
743 | ||
744 | if (arg_count >= MAXUSERARGS) | |
b81b921f TT |
745 | error (_("user defined function may only have %d arguments."), |
746 | MAXUSERARGS); | |
d318976c FN |
747 | |
748 | /* Strip whitespace. */ | |
749 | while (*p == ' ' || *p == '\t') | |
750 | p++; | |
751 | ||
752 | /* P now points to an argument. */ | |
753 | start_arg = p; | |
754 | user_args->a[arg_count].arg = p; | |
755 | ||
756 | /* Get to the end of this argument. */ | |
757 | while (*p) | |
758 | { | |
759 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
760 | break; | |
761 | else | |
762 | { | |
763 | if (bsquote) | |
764 | bsquote = 0; | |
765 | else if (*p == '\\') | |
766 | bsquote = 1; | |
767 | else if (squote) | |
768 | { | |
769 | if (*p == '\'') | |
770 | squote = 0; | |
771 | } | |
772 | else if (dquote) | |
773 | { | |
774 | if (*p == '"') | |
775 | dquote = 0; | |
776 | } | |
777 | else | |
778 | { | |
779 | if (*p == '\'') | |
780 | squote = 1; | |
781 | else if (*p == '"') | |
782 | dquote = 1; | |
783 | } | |
784 | p++; | |
785 | } | |
786 | } | |
787 | ||
788 | user_args->a[arg_count].len = p - start_arg; | |
789 | arg_count++; | |
790 | user_args->count++; | |
791 | } | |
792 | return old_chain; | |
793 | } | |
794 | ||
ebcd3b23 MS |
795 | /* Given character string P, return a point to the first argument |
796 | ($arg), or NULL if P contains no arguments. */ | |
d318976c FN |
797 | |
798 | static char * | |
799 | locate_arg (char *p) | |
800 | { | |
801 | while ((p = strchr (p, '$'))) | |
802 | { | |
61012eef | 803 | if (startswith (p, "$arg") |
c03c782f | 804 | && (isdigit (p[4]) || p[4] == 'c')) |
d318976c FN |
805 | return p; |
806 | p++; | |
807 | } | |
808 | return NULL; | |
809 | } | |
810 | ||
811 | /* Insert the user defined arguments stored in user_arg into the $arg | |
ebcd3b23 MS |
812 | arguments found in line, with the updated copy being placed into |
813 | nline. */ | |
d318976c FN |
814 | |
815 | static char * | |
816 | insert_args (char *line) | |
817 | { | |
818 | char *p, *save_line, *new_line; | |
819 | unsigned len, i; | |
820 | ||
61d9b92f DJ |
821 | /* If we are not in a user-defined function, treat $argc, $arg0, et |
822 | cetera as normal convenience variables. */ | |
823 | if (user_args == NULL) | |
824 | return xstrdup (line); | |
825 | ||
ebcd3b23 MS |
826 | /* First we need to know how much memory to allocate for the new |
827 | line. */ | |
d318976c FN |
828 | save_line = line; |
829 | len = 0; | |
830 | while ((p = locate_arg (line))) | |
831 | { | |
832 | len += p - line; | |
833 | i = p[4] - '0'; | |
834 | ||
c03c782f AS |
835 | if (p[4] == 'c') |
836 | { | |
837 | /* $argc. Number will be <=10. */ | |
838 | len += user_args->count == 10 ? 2 : 1; | |
839 | } | |
840 | else if (i >= user_args->count) | |
d318976c | 841 | { |
8a3fe4f8 | 842 | error (_("Missing argument %d in user function."), i); |
d318976c FN |
843 | return NULL; |
844 | } | |
c03c782f AS |
845 | else |
846 | { | |
847 | len += user_args->a[i].len; | |
848 | } | |
d318976c FN |
849 | line = p + 5; |
850 | } | |
851 | ||
852 | /* Don't forget the tail. */ | |
853 | len += strlen (line); | |
854 | ||
855 | /* Allocate space for the new line and fill it in. */ | |
856 | new_line = (char *) xmalloc (len + 1); | |
857 | if (new_line == NULL) | |
858 | return NULL; | |
859 | ||
860 | /* Restore pointer to beginning of old line. */ | |
861 | line = save_line; | |
862 | ||
863 | /* Save pointer to beginning of new line. */ | |
864 | save_line = new_line; | |
865 | ||
866 | while ((p = locate_arg (line))) | |
867 | { | |
868 | int i, len; | |
869 | ||
870 | memcpy (new_line, line, p - line); | |
871 | new_line += p - line; | |
d318976c | 872 | |
c03c782f AS |
873 | if (p[4] == 'c') |
874 | { | |
875 | gdb_assert (user_args->count >= 0 && user_args->count <= 10); | |
876 | if (user_args->count == 10) | |
877 | { | |
878 | *(new_line++) = '1'; | |
879 | *(new_line++) = '0'; | |
880 | } | |
881 | else | |
882 | *(new_line++) = user_args->count + '0'; | |
883 | } | |
884 | else | |
d318976c | 885 | { |
c03c782f AS |
886 | i = p[4] - '0'; |
887 | len = user_args->a[i].len; | |
888 | if (len) | |
cdb27c12 MS |
889 | { |
890 | memcpy (new_line, user_args->a[i].arg, len); | |
891 | new_line += len; | |
892 | } | |
d318976c FN |
893 | } |
894 | line = p + 5; | |
895 | } | |
896 | /* Don't forget the tail. */ | |
897 | strcpy (new_line, line); | |
898 | ||
899 | /* Return a pointer to the beginning of the new line. */ | |
900 | return save_line; | |
901 | } | |
902 | ||
903 | \f | |
904 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
905 | code bodies. This is typically used when we encounter an "else" | |
906 | clause for an "if" command. */ | |
907 | ||
908 | static void | |
909 | realloc_body_list (struct command_line *command, int new_length) | |
910 | { | |
911 | int n; | |
912 | struct command_line **body_list; | |
913 | ||
914 | n = command->body_count; | |
915 | ||
916 | /* Nothing to do? */ | |
917 | if (new_length <= n) | |
918 | return; | |
919 | ||
920 | body_list = (struct command_line **) | |
921 | xmalloc (sizeof (struct command_line *) * new_length); | |
922 | ||
923 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
42b575e5 | 924 | memset (body_list + n, 0, sizeof (struct command_line *) * (new_length - n)); |
d318976c | 925 | |
b8c9b27d | 926 | xfree (command->body_list); |
d318976c FN |
927 | command->body_list = body_list; |
928 | command->body_count = new_length; | |
929 | } | |
930 | ||
3c1179ff VP |
931 | /* Read next line from stdout. Passed to read_command_line_1 and |
932 | recurse_read_control_structure whenever we need to read commands | |
933 | from stdout. */ | |
d318976c | 934 | |
3c1179ff | 935 | static char * |
a58d7472 | 936 | read_next_line (void) |
d318976c | 937 | { |
3c1179ff | 938 | char *prompt_ptr, control_prompt[256]; |
d318976c FN |
939 | int i = 0; |
940 | ||
941 | if (control_level >= 254) | |
8a3fe4f8 | 942 | error (_("Control nesting too deep!")); |
d318976c FN |
943 | |
944 | /* Set a prompt based on the nesting of the control commands. */ | |
9a4105ab | 945 | if (instream == stdin || (instream == 0 && deprecated_readline_hook != NULL)) |
d318976c FN |
946 | { |
947 | for (i = 0; i < control_level; i++) | |
948 | control_prompt[i] = ' '; | |
949 | control_prompt[i] = '>'; | |
950 | control_prompt[i + 1] = '\0'; | |
951 | prompt_ptr = (char *) &control_prompt[0]; | |
952 | } | |
953 | else | |
954 | prompt_ptr = NULL; | |
955 | ||
3c1179ff VP |
956 | return command_line_input (prompt_ptr, instream == stdin, "commands"); |
957 | } | |
958 | ||
ebcd3b23 MS |
959 | /* Process one input line. If the command is an "end", return such an |
960 | indication to the caller. If PARSE_COMMANDS is true, strip leading | |
961 | whitespace (trailing whitespace is always stripped) in the line, | |
962 | attempt to recognize GDB control commands, and also return an | |
963 | indication if the command is an "else" or a nop. | |
964 | ||
3c1179ff VP |
965 | Otherwise, only "end" is recognized. */ |
966 | ||
967 | static enum misc_command_type | |
a7bdde9e VP |
968 | process_next_line (char *p, struct command_line **command, int parse_commands, |
969 | void (*validator)(char *, void *), void *closure) | |
3c1179ff | 970 | { |
50cb2941 JK |
971 | char *p_end; |
972 | char *p_start; | |
3c1179ff | 973 | int not_handled = 0; |
d318976c FN |
974 | |
975 | /* Not sure what to do here. */ | |
976 | if (p == NULL) | |
977 | return end_command; | |
978 | ||
311a4e6b | 979 | /* Strip trailing whitespace. */ |
50cb2941 JK |
980 | p_end = p + strlen (p); |
981 | while (p_end > p && (p_end[-1] == ' ' || p_end[-1] == '\t')) | |
982 | p_end--; | |
d318976c | 983 | |
50cb2941 | 984 | p_start = p; |
3630a92d | 985 | /* Strip leading whitespace. */ |
50cb2941 JK |
986 | while (p_start < p_end && (*p_start == ' ' || *p_start == '\t')) |
987 | p_start++; | |
d318976c | 988 | |
ebcd3b23 | 989 | /* 'end' is always recognized, regardless of parse_commands value. |
3630a92d | 990 | We also permit whitespace before end and after. */ |
61012eef | 991 | if (p_end - p_start == 3 && startswith (p_start, "end")) |
3630a92d VP |
992 | return end_command; |
993 | ||
311a4e6b | 994 | if (parse_commands) |
d318976c | 995 | { |
ebcd3b23 | 996 | /* If commands are parsed, we skip initial spaces. Otherwise, |
3630a92d VP |
997 | which is the case for Python commands and documentation |
998 | (see the 'document' command), spaces are preserved. */ | |
50cb2941 | 999 | p = p_start; |
3630a92d | 1000 | |
311a4e6b | 1001 | /* Blanks and comments don't really do anything, but we need to |
ebcd3b23 MS |
1002 | distinguish them from else, end and other commands which can |
1003 | be executed. */ | |
50cb2941 | 1004 | if (p_end == p || p[0] == '#') |
311a4e6b TJB |
1005 | return nop_command; |
1006 | ||
1007 | /* Is the else clause of an if control structure? */ | |
61012eef | 1008 | if (p_end - p == 4 && startswith (p, "else")) |
311a4e6b TJB |
1009 | return else_command; |
1010 | ||
ebcd3b23 MS |
1011 | /* Check for while, if, break, continue, etc and build a new |
1012 | command line structure for them. */ | |
61012eef GB |
1013 | if ((p_end - p >= 14 && startswith (p, "while-stepping")) |
1014 | || (p_end - p >= 8 && startswith (p, "stepping")) | |
1015 | || (p_end - p >= 2 && startswith (p, "ws"))) | |
a7bdde9e VP |
1016 | { |
1017 | /* Because validate_actionline and encode_action lookup | |
1018 | command's line as command, we need the line to | |
1019 | include 'while-stepping'. | |
1020 | ||
1021 | For 'ws' alias, the command will have 'ws', not expanded | |
ebcd3b23 | 1022 | to 'while-stepping'. This is intentional -- we don't |
a7bdde9e | 1023 | really want frontend to send a command list with 'ws', |
ebcd3b23 MS |
1024 | and next break-info returning command line with |
1025 | 'while-stepping'. This should work, but might cause the | |
1026 | breakpoint to be marked as changed while it's actually | |
1027 | not. */ | |
a7bdde9e VP |
1028 | *command = build_command_line (while_stepping_control, p); |
1029 | } | |
61012eef | 1030 | else if (p_end - p > 5 && startswith (p, "while")) |
311a4e6b TJB |
1031 | { |
1032 | char *first_arg; | |
cdb27c12 | 1033 | |
311a4e6b | 1034 | first_arg = p + 5; |
50cb2941 | 1035 | while (first_arg < p_end && isspace (*first_arg)) |
311a4e6b TJB |
1036 | first_arg++; |
1037 | *command = build_command_line (while_control, first_arg); | |
1038 | } | |
61012eef | 1039 | else if (p_end - p > 2 && startswith (p, "if")) |
311a4e6b TJB |
1040 | { |
1041 | char *first_arg; | |
cdb27c12 | 1042 | |
311a4e6b | 1043 | first_arg = p + 2; |
50cb2941 | 1044 | while (first_arg < p_end && isspace (*first_arg)) |
311a4e6b TJB |
1045 | first_arg++; |
1046 | *command = build_command_line (if_control, first_arg); | |
1047 | } | |
61012eef | 1048 | else if (p_end - p >= 8 && startswith (p, "commands")) |
311a4e6b TJB |
1049 | { |
1050 | char *first_arg; | |
cdb27c12 | 1051 | |
311a4e6b | 1052 | first_arg = p + 8; |
50cb2941 | 1053 | while (first_arg < p_end && isspace (*first_arg)) |
311a4e6b TJB |
1054 | first_arg++; |
1055 | *command = build_command_line (commands_control, first_arg); | |
1056 | } | |
61012eef | 1057 | else if (p_end - p == 6 && startswith (p, "python")) |
311a4e6b TJB |
1058 | { |
1059 | /* Note that we ignore the inline "python command" form | |
1060 | here. */ | |
1061 | *command = build_command_line (python_control, ""); | |
1062 | } | |
61012eef | 1063 | else if (p_end - p == 6 && startswith (p, "compile")) |
bb2ec1b3 TT |
1064 | { |
1065 | /* Note that we ignore the inline "compile command" form | |
1066 | here. */ | |
1067 | *command = build_command_line (compile_control, ""); | |
1068 | (*command)->control_u.compile.scope = COMPILE_I_INVALID_SCOPE; | |
1069 | } | |
1070 | ||
61012eef | 1071 | else if (p_end - p == 5 && startswith (p, "guile")) |
ed3ef339 DE |
1072 | { |
1073 | /* Note that we ignore the inline "guile command" form here. */ | |
1074 | *command = build_command_line (guile_control, ""); | |
1075 | } | |
61012eef | 1076 | else if (p_end - p == 10 && startswith (p, "loop_break")) |
311a4e6b TJB |
1077 | { |
1078 | *command = (struct command_line *) | |
1079 | xmalloc (sizeof (struct command_line)); | |
1080 | (*command)->next = NULL; | |
1081 | (*command)->line = NULL; | |
1082 | (*command)->control_type = break_control; | |
1083 | (*command)->body_count = 0; | |
1084 | (*command)->body_list = NULL; | |
1085 | } | |
61012eef | 1086 | else if (p_end - p == 13 && startswith (p, "loop_continue")) |
311a4e6b TJB |
1087 | { |
1088 | *command = (struct command_line *) | |
1089 | xmalloc (sizeof (struct command_line)); | |
1090 | (*command)->next = NULL; | |
1091 | (*command)->line = NULL; | |
1092 | (*command)->control_type = continue_control; | |
1093 | (*command)->body_count = 0; | |
1094 | (*command)->body_list = NULL; | |
1095 | } | |
1096 | else | |
1097 | not_handled = 1; | |
d318976c | 1098 | } |
311a4e6b TJB |
1099 | |
1100 | if (!parse_commands || not_handled) | |
d318976c FN |
1101 | { |
1102 | /* A normal command. */ | |
1103 | *command = (struct command_line *) | |
1104 | xmalloc (sizeof (struct command_line)); | |
1105 | (*command)->next = NULL; | |
50cb2941 | 1106 | (*command)->line = savestring (p, p_end - p); |
d318976c FN |
1107 | (*command)->control_type = simple_control; |
1108 | (*command)->body_count = 0; | |
1109 | (*command)->body_list = NULL; | |
1110 | } | |
1111 | ||
a7bdde9e VP |
1112 | if (validator) |
1113 | { | |
1114 | volatile struct gdb_exception ex; | |
cdb27c12 | 1115 | |
a7bdde9e VP |
1116 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1117 | { | |
1118 | validator ((*command)->line, closure); | |
1119 | } | |
1120 | if (ex.reason < 0) | |
1121 | { | |
1122 | xfree (*command); | |
1123 | throw_exception (ex); | |
1124 | } | |
1125 | } | |
1126 | ||
d318976c FN |
1127 | /* Nothing special. */ |
1128 | return ok_command; | |
1129 | } | |
1130 | ||
ebcd3b23 MS |
1131 | /* Recursively read in the control structures and create a |
1132 | command_line structure from them. Use read_next_line_func to | |
1133 | obtain lines of the command. */ | |
d318976c FN |
1134 | |
1135 | static enum command_control_type | |
a58d7472 | 1136 | recurse_read_control_structure (char * (*read_next_line_func) (void), |
a7bdde9e VP |
1137 | struct command_line *current_cmd, |
1138 | void (*validator)(char *, void *), | |
1139 | void *closure) | |
d318976c FN |
1140 | { |
1141 | int current_body, i; | |
1142 | enum misc_command_type val; | |
1143 | enum command_control_type ret; | |
1144 | struct command_line **body_ptr, *child_tail, *next; | |
1145 | ||
1146 | child_tail = NULL; | |
1147 | current_body = 1; | |
1148 | ||
1149 | /* Sanity checks. */ | |
1150 | if (current_cmd->control_type == simple_control) | |
8a3fe4f8 | 1151 | error (_("Recursed on a simple control type.")); |
d318976c FN |
1152 | |
1153 | if (current_body > current_cmd->body_count) | |
8a3fe4f8 | 1154 | error (_("Allocated body is smaller than this command type needs.")); |
d318976c FN |
1155 | |
1156 | /* Read lines from the input stream and build control structures. */ | |
1157 | while (1) | |
1158 | { | |
1159 | dont_repeat (); | |
1160 | ||
1161 | next = NULL; | |
3c1179ff | 1162 | val = process_next_line (read_next_line_func (), &next, |
ed3ef339 | 1163 | current_cmd->control_type != python_control |
bb2ec1b3 TT |
1164 | && current_cmd->control_type != guile_control |
1165 | && current_cmd->control_type != compile_control, | |
a7bdde9e | 1166 | validator, closure); |
d318976c FN |
1167 | |
1168 | /* Just skip blanks and comments. */ | |
1169 | if (val == nop_command) | |
1170 | continue; | |
1171 | ||
1172 | if (val == end_command) | |
1173 | { | |
1e9c71b8 | 1174 | if (multi_line_command_p (current_cmd->control_type)) |
d318976c | 1175 | { |
40c03ae8 | 1176 | /* Success reading an entire canned sequence of commands. */ |
d318976c FN |
1177 | ret = simple_control; |
1178 | break; | |
1179 | } | |
1180 | else | |
1181 | { | |
1182 | ret = invalid_control; | |
1183 | break; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* Not the end of a control structure. */ | |
1188 | if (val == else_command) | |
1189 | { | |
1190 | if (current_cmd->control_type == if_control | |
1191 | && current_body == 1) | |
1192 | { | |
1193 | realloc_body_list (current_cmd, 2); | |
1194 | current_body = 2; | |
1195 | child_tail = NULL; | |
1196 | continue; | |
1197 | } | |
1198 | else | |
1199 | { | |
1200 | ret = invalid_control; | |
1201 | break; | |
1202 | } | |
1203 | } | |
1204 | ||
1205 | if (child_tail) | |
1206 | { | |
1207 | child_tail->next = next; | |
1208 | } | |
1209 | else | |
1210 | { | |
1211 | body_ptr = current_cmd->body_list; | |
1212 | for (i = 1; i < current_body; i++) | |
1213 | body_ptr++; | |
1214 | ||
1215 | *body_ptr = next; | |
1216 | ||
1217 | } | |
1218 | ||
1219 | child_tail = next; | |
1220 | ||
1221 | /* If the latest line is another control structure, then recurse | |
1222 | on it. */ | |
1e9c71b8 | 1223 | if (multi_line_command_p (next->control_type)) |
d318976c FN |
1224 | { |
1225 | control_level++; | |
a7bdde9e VP |
1226 | ret = recurse_read_control_structure (read_next_line_func, next, |
1227 | validator, closure); | |
d318976c FN |
1228 | control_level--; |
1229 | ||
1230 | if (ret != simple_control) | |
1231 | break; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | dont_repeat (); | |
1236 | ||
1237 | return ret; | |
1238 | } | |
1239 | ||
c41535fd EZ |
1240 | static void |
1241 | restore_interp (void *arg) | |
1242 | { | |
1243 | interp_set_temp (interp_name ((struct interp *)arg)); | |
1244 | } | |
1245 | ||
d318976c FN |
1246 | /* Read lines from the input stream and accumulate them in a chain of |
1247 | struct command_line's, which is then returned. For input from a | |
1248 | terminal, the special command "end" is used to mark the end of the | |
311a4e6b TJB |
1249 | input, and is not included in the returned chain of commands. |
1250 | ||
1251 | If PARSE_COMMANDS is true, strip leading whitespace (trailing whitespace | |
1252 | is always stripped) in the line and attempt to recognize GDB control | |
1253 | commands. Otherwise, only "end" is recognized. */ | |
d318976c FN |
1254 | |
1255 | #define END_MESSAGE "End with a line saying just \"end\"." | |
1256 | ||
1257 | struct command_line * | |
a7bdde9e VP |
1258 | read_command_lines (char *prompt_arg, int from_tty, int parse_commands, |
1259 | void (*validator)(char *, void *), void *closure) | |
d318976c | 1260 | { |
3c1179ff | 1261 | struct command_line *head; |
698ba934 DJ |
1262 | |
1263 | if (from_tty && input_from_terminal_p ()) | |
d318976c | 1264 | { |
698ba934 DJ |
1265 | if (deprecated_readline_begin_hook) |
1266 | { | |
ebcd3b23 | 1267 | /* Note - intentional to merge messages with no newline. */ |
9a2b4c1b MS |
1268 | (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg, |
1269 | END_MESSAGE); | |
698ba934 DJ |
1270 | } |
1271 | else | |
1272 | { | |
1273 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); | |
1274 | gdb_flush (gdb_stdout); | |
1275 | } | |
d318976c FN |
1276 | } |
1277 | ||
c41535fd EZ |
1278 | |
1279 | /* Reading commands assumes the CLI behavior, so temporarily | |
1280 | override the current interpreter with CLI. */ | |
1281 | if (current_interp_named_p (INTERP_CONSOLE)) | |
1282 | head = read_command_lines_1 (read_next_line, parse_commands, | |
1283 | validator, closure); | |
1284 | else | |
1285 | { | |
1286 | struct interp *old_interp = interp_set_temp (INTERP_CONSOLE); | |
1287 | struct cleanup *old_chain = make_cleanup (restore_interp, old_interp); | |
1288 | ||
1289 | head = read_command_lines_1 (read_next_line, parse_commands, | |
1290 | validator, closure); | |
1291 | do_cleanups (old_chain); | |
1292 | } | |
3c1179ff VP |
1293 | |
1294 | if (deprecated_readline_end_hook && from_tty && input_from_terminal_p ()) | |
1295 | { | |
1296 | (*deprecated_readline_end_hook) (); | |
1297 | } | |
1298 | return (head); | |
1299 | } | |
1300 | ||
1301 | /* Act the same way as read_command_lines, except that each new line is | |
1302 | obtained using READ_NEXT_LINE_FUNC. */ | |
1303 | ||
1304 | struct command_line * | |
a7bdde9e VP |
1305 | read_command_lines_1 (char * (*read_next_line_func) (void), int parse_commands, |
1306 | void (*validator)(char *, void *), void *closure) | |
3c1179ff VP |
1307 | { |
1308 | struct command_line *head, *tail, *next; | |
ac5007fd | 1309 | struct cleanup *old_chain = make_cleanup (null_cleanup, NULL); |
3c1179ff VP |
1310 | enum command_control_type ret; |
1311 | enum misc_command_type val; | |
1312 | ||
1313 | control_level = 0; | |
d318976c | 1314 | head = tail = NULL; |
d318976c FN |
1315 | |
1316 | while (1) | |
1317 | { | |
f429d7d0 | 1318 | dont_repeat (); |
a7bdde9e VP |
1319 | val = process_next_line (read_next_line_func (), &next, parse_commands, |
1320 | validator, closure); | |
d318976c FN |
1321 | |
1322 | /* Ignore blank lines or comments. */ | |
1323 | if (val == nop_command) | |
1324 | continue; | |
1325 | ||
1326 | if (val == end_command) | |
1327 | { | |
1328 | ret = simple_control; | |
1329 | break; | |
1330 | } | |
1331 | ||
1332 | if (val != ok_command) | |
1333 | { | |
1334 | ret = invalid_control; | |
1335 | break; | |
1336 | } | |
1337 | ||
1e9c71b8 | 1338 | if (multi_line_command_p (next->control_type)) |
d318976c FN |
1339 | { |
1340 | control_level++; | |
a7bdde9e VP |
1341 | ret = recurse_read_control_structure (read_next_line_func, next, |
1342 | validator, closure); | |
d318976c FN |
1343 | control_level--; |
1344 | ||
1345 | if (ret == invalid_control) | |
1346 | break; | |
1347 | } | |
1348 | ||
1349 | if (tail) | |
1350 | { | |
1351 | tail->next = next; | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | head = next; | |
ac5007fd | 1356 | make_cleanup_free_command_lines (&head); |
d318976c FN |
1357 | } |
1358 | tail = next; | |
1359 | } | |
1360 | ||
1361 | dont_repeat (); | |
1362 | ||
ac5007fd TT |
1363 | if (ret != invalid_control) |
1364 | discard_cleanups (old_chain); | |
1365 | else | |
1366 | do_cleanups (old_chain); | |
d318976c | 1367 | |
3c1179ff | 1368 | return head; |
d318976c FN |
1369 | } |
1370 | ||
1371 | /* Free a chain of struct command_line's. */ | |
1372 | ||
1373 | void | |
1374 | free_command_lines (struct command_line **lptr) | |
1375 | { | |
d5b5ac79 AC |
1376 | struct command_line *l = *lptr; |
1377 | struct command_line *next; | |
d318976c FN |
1378 | struct command_line **blist; |
1379 | int i; | |
1380 | ||
1381 | while (l) | |
1382 | { | |
1383 | if (l->body_count > 0) | |
1384 | { | |
1385 | blist = l->body_list; | |
1386 | for (i = 0; i < l->body_count; i++, blist++) | |
1387 | free_command_lines (blist); | |
1388 | } | |
1389 | next = l->next; | |
b8c9b27d KB |
1390 | xfree (l->line); |
1391 | xfree (l); | |
d318976c FN |
1392 | l = next; |
1393 | } | |
0d70f41b | 1394 | *lptr = NULL; |
d318976c FN |
1395 | } |
1396 | ||
1397 | static void | |
1398 | do_free_command_lines_cleanup (void *arg) | |
1399 | { | |
1400 | free_command_lines (arg); | |
1401 | } | |
1402 | ||
6c50ab1c | 1403 | struct cleanup * |
d318976c FN |
1404 | make_cleanup_free_command_lines (struct command_line **arg) |
1405 | { | |
1406 | return make_cleanup (do_free_command_lines_cleanup, arg); | |
1407 | } | |
c2b8ed2c MS |
1408 | |
1409 | struct command_line * | |
1410 | copy_command_lines (struct command_line *cmds) | |
1411 | { | |
1412 | struct command_line *result = NULL; | |
1413 | ||
1414 | if (cmds) | |
1415 | { | |
1416 | result = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
1417 | ||
1418 | result->next = copy_command_lines (cmds->next); | |
1419 | result->line = xstrdup (cmds->line); | |
1420 | result->control_type = cmds->control_type; | |
1421 | result->body_count = cmds->body_count; | |
1422 | if (cmds->body_count > 0) | |
1423 | { | |
1424 | int i; | |
1425 | ||
1426 | result->body_list = (struct command_line **) | |
1427 | xmalloc (sizeof (struct command_line *) * cmds->body_count); | |
1428 | ||
1429 | for (i = 0; i < cmds->body_count; i++) | |
1430 | result->body_list[i] = copy_command_lines (cmds->body_list[i]); | |
1431 | } | |
1432 | else | |
1433 | result->body_list = NULL; | |
1434 | } | |
1435 | ||
1436 | return result; | |
1437 | } | |
d318976c | 1438 | \f |
adb483fe DJ |
1439 | /* Validate that *COMNAME is a valid name for a command. Return the |
1440 | containing command list, in case it starts with a prefix command. | |
1441 | The prefix must already exist. *COMNAME is advanced to point after | |
1442 | any prefix, and a NUL character overwrites the space after the | |
1443 | prefix. */ | |
1444 | ||
1445 | static struct cmd_list_element ** | |
1446 | validate_comname (char **comname) | |
d318976c | 1447 | { |
adb483fe DJ |
1448 | struct cmd_list_element **list = &cmdlist; |
1449 | char *p, *last_word; | |
d318976c | 1450 | |
adb483fe | 1451 | if (*comname == 0) |
e2e0b3e5 | 1452 | error_no_arg (_("name of command to define")); |
d318976c | 1453 | |
adb483fe DJ |
1454 | /* Find the last word of the argument. */ |
1455 | p = *comname + strlen (*comname); | |
1456 | while (p > *comname && isspace (p[-1])) | |
1457 | p--; | |
1458 | while (p > *comname && !isspace (p[-1])) | |
1459 | p--; | |
1460 | last_word = p; | |
1461 | ||
1462 | /* Find the corresponding command list. */ | |
1463 | if (last_word != *comname) | |
1464 | { | |
1465 | struct cmd_list_element *c; | |
6f937416 PA |
1466 | char saved_char; |
1467 | const char *tem = *comname; | |
adb483fe DJ |
1468 | |
1469 | /* Separate the prefix and the command. */ | |
1470 | saved_char = last_word[-1]; | |
1471 | last_word[-1] = '\0'; | |
1472 | ||
1473 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
1474 | if (c->prefixlist == NULL) | |
1475 | error (_("\"%s\" is not a prefix command."), *comname); | |
1476 | ||
1477 | list = c->prefixlist; | |
1478 | last_word[-1] = saved_char; | |
1479 | *comname = last_word; | |
1480 | } | |
1481 | ||
1482 | p = *comname; | |
d318976c FN |
1483 | while (*p) |
1484 | { | |
1485 | if (!isalnum (*p) && *p != '-' && *p != '_') | |
8a3fe4f8 | 1486 | error (_("Junk in argument list: \"%s\""), p); |
d318976c FN |
1487 | p++; |
1488 | } | |
adb483fe DJ |
1489 | |
1490 | return list; | |
d318976c FN |
1491 | } |
1492 | ||
1493 | /* This is just a placeholder in the command data structures. */ | |
1494 | static void | |
1495 | user_defined_command (char *ignore, int from_tty) | |
1496 | { | |
1497 | } | |
1498 | ||
2370e853 | 1499 | static void |
d318976c FN |
1500 | define_command (char *comname, int from_tty) |
1501 | { | |
1502 | #define MAX_TMPBUF 128 | |
1503 | enum cmd_hook_type | |
1504 | { | |
1505 | CMD_NO_HOOK = 0, | |
1506 | CMD_PRE_HOOK, | |
1507 | CMD_POST_HOOK | |
1508 | }; | |
d5b5ac79 | 1509 | struct command_line *cmds; |
d36fc00b MS |
1510 | struct cmd_list_element *c, *newc, *hookc = 0, **list; |
1511 | char *tem, *comfull; | |
6f937416 | 1512 | const char *tem_c; |
d318976c FN |
1513 | char tmpbuf[MAX_TMPBUF]; |
1514 | int hook_type = CMD_NO_HOOK; | |
1515 | int hook_name_size = 0; | |
1516 | ||
1517 | #define HOOK_STRING "hook-" | |
1518 | #define HOOK_LEN 5 | |
1519 | #define HOOK_POST_STRING "hookpost-" | |
1520 | #define HOOK_POST_LEN 9 | |
1521 | ||
adb483fe DJ |
1522 | comfull = comname; |
1523 | list = validate_comname (&comname); | |
d318976c FN |
1524 | |
1525 | /* Look it up, and verify that we got an exact match. */ | |
6f937416 PA |
1526 | tem_c = comname; |
1527 | c = lookup_cmd (&tem_c, *list, "", -1, 1); | |
5cb316ef | 1528 | if (c && strcmp (comname, c->name) != 0) |
d318976c FN |
1529 | c = 0; |
1530 | ||
1531 | if (c) | |
1532 | { | |
ab4e3d93 | 1533 | int q; |
cdb27c12 | 1534 | |
fe978cb0 | 1535 | if (c->theclass == class_user || c->theclass == class_alias) |
e2e0b3e5 | 1536 | q = query (_("Redefine command \"%s\"? "), c->name); |
d318976c | 1537 | else |
e2e0b3e5 | 1538 | q = query (_("Really redefine built-in command \"%s\"? "), c->name); |
ab4e3d93 | 1539 | if (!q) |
8a3fe4f8 | 1540 | error (_("Command \"%s\" not redefined."), c->name); |
d318976c FN |
1541 | } |
1542 | ||
1543 | /* If this new command is a hook, then mark the command which it | |
1544 | is hooking. Note that we allow hooking `help' commands, so that | |
1545 | we can hook the `stop' pseudo-command. */ | |
1546 | ||
1547 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
1548 | { | |
1549 | hook_type = CMD_PRE_HOOK; | |
1550 | hook_name_size = HOOK_LEN; | |
1551 | } | |
1552 | else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN)) | |
1553 | { | |
1554 | hook_type = CMD_POST_HOOK; | |
1555 | hook_name_size = HOOK_POST_LEN; | |
1556 | } | |
1557 | ||
1558 | if (hook_type != CMD_NO_HOOK) | |
1559 | { | |
1560 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
6f937416 PA |
1561 | tem_c = comname + hook_name_size; |
1562 | hookc = lookup_cmd (&tem_c, *list, "", -1, 0); | |
5cb316ef | 1563 | if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0) |
d318976c FN |
1564 | hookc = 0; |
1565 | if (!hookc) | |
1566 | { | |
9a2b4c1b MS |
1567 | warning (_("Your new `%s' command does not " |
1568 | "hook any existing command."), | |
adb483fe | 1569 | comfull); |
9e2f0ad4 | 1570 | if (!query (_("Proceed? "))) |
8a3fe4f8 | 1571 | error (_("Not confirmed.")); |
d318976c FN |
1572 | } |
1573 | } | |
1574 | ||
1b36a34b | 1575 | comname = xstrdup (comname); |
d318976c FN |
1576 | |
1577 | /* If the rest of the commands will be case insensitive, this one | |
ebcd3b23 | 1578 | should behave in the same manner. */ |
d318976c FN |
1579 | for (tem = comname; *tem; tem++) |
1580 | if (isupper (*tem)) | |
1581 | *tem = tolower (*tem); | |
1582 | ||
8c042590 PM |
1583 | xsnprintf (tmpbuf, sizeof (tmpbuf), |
1584 | "Type commands for definition of \"%s\".", comfull); | |
a7bdde9e | 1585 | cmds = read_command_lines (tmpbuf, from_tty, 1, 0, 0); |
d318976c | 1586 | |
fe978cb0 | 1587 | if (c && c->theclass == class_user) |
d318976c FN |
1588 | free_command_lines (&c->user_commands); |
1589 | ||
1590 | newc = add_cmd (comname, class_user, user_defined_command, | |
fe978cb0 | 1591 | (c && c->theclass == class_user) |
1b36a34b | 1592 | ? c->doc : xstrdup ("User-defined."), list); |
d318976c FN |
1593 | newc->user_commands = cmds; |
1594 | ||
1595 | /* If this new command is a hook, then mark both commands as being | |
1596 | tied. */ | |
1597 | if (hookc) | |
1598 | { | |
1599 | switch (hook_type) | |
1600 | { | |
1601 | case CMD_PRE_HOOK: | |
1602 | hookc->hook_pre = newc; /* Target gets hooked. */ | |
ebcd3b23 | 1603 | newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */ |
d318976c FN |
1604 | break; |
1605 | case CMD_POST_HOOK: | |
f48ff60a | 1606 | hookc->hook_post = newc; /* Target gets hooked. */ |
9a2b4c1b MS |
1607 | newc->hookee_post = hookc; /* We are marked as hooking |
1608 | target cmd. */ | |
d318976c FN |
1609 | break; |
1610 | default: | |
ebcd3b23 | 1611 | /* Should never come here as hookc would be 0. */ |
e2e0b3e5 | 1612 | internal_error (__FILE__, __LINE__, _("bad switch")); |
d318976c FN |
1613 | } |
1614 | } | |
1615 | } | |
1616 | ||
2370e853 | 1617 | static void |
d318976c FN |
1618 | document_command (char *comname, int from_tty) |
1619 | { | |
1620 | struct command_line *doclines; | |
adb483fe | 1621 | struct cmd_list_element *c, **list; |
6f937416 PA |
1622 | const char *tem; |
1623 | char *comfull; | |
d318976c FN |
1624 | char tmpbuf[128]; |
1625 | ||
adb483fe DJ |
1626 | comfull = comname; |
1627 | list = validate_comname (&comname); | |
d318976c | 1628 | |
adb483fe DJ |
1629 | tem = comname; |
1630 | c = lookup_cmd (&tem, *list, "", 0, 1); | |
d318976c | 1631 | |
fe978cb0 | 1632 | if (c->theclass != class_user) |
adb483fe | 1633 | error (_("Command \"%s\" is built-in."), comfull); |
d318976c | 1634 | |
8c042590 PM |
1635 | xsnprintf (tmpbuf, sizeof (tmpbuf), "Type documentation for \"%s\".", |
1636 | comfull); | |
a7bdde9e | 1637 | doclines = read_command_lines (tmpbuf, from_tty, 0, 0, 0); |
d318976c FN |
1638 | |
1639 | if (c->doc) | |
1947513d | 1640 | xfree ((char *) c->doc); |
d318976c FN |
1641 | |
1642 | { | |
d5b5ac79 AC |
1643 | struct command_line *cl1; |
1644 | int len = 0; | |
1947513d | 1645 | char *doc; |
d318976c FN |
1646 | |
1647 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1648 | len += strlen (cl1->line) + 1; | |
1649 | ||
1947513d TT |
1650 | doc = (char *) xmalloc (len + 1); |
1651 | *doc = 0; | |
d318976c FN |
1652 | |
1653 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1654 | { | |
1947513d | 1655 | strcat (doc, cl1->line); |
d318976c | 1656 | if (cl1->next) |
1947513d | 1657 | strcat (doc, "\n"); |
d318976c | 1658 | } |
1947513d TT |
1659 | |
1660 | c->doc = doc; | |
d318976c FN |
1661 | } |
1662 | ||
1663 | free_command_lines (&doclines); | |
1664 | } | |
1665 | \f | |
1666 | struct source_cleanup_lines_args | |
1667 | { | |
1668 | int old_line; | |
05159abe | 1669 | const char *old_file; |
d318976c FN |
1670 | }; |
1671 | ||
1672 | static void | |
4efb68b1 | 1673 | source_cleanup_lines (void *args) |
d318976c FN |
1674 | { |
1675 | struct source_cleanup_lines_args *p = | |
cdb27c12 MS |
1676 | (struct source_cleanup_lines_args *) args; |
1677 | ||
d318976c FN |
1678 | source_line_number = p->old_line; |
1679 | source_file_name = p->old_file; | |
d318976c FN |
1680 | } |
1681 | ||
ebcd3b23 | 1682 | /* Used to implement source_command. */ |
d318976c FN |
1683 | |
1684 | void | |
05159abe | 1685 | script_from_file (FILE *stream, const char *file) |
d318976c FN |
1686 | { |
1687 | struct cleanup *old_cleanups; | |
1688 | struct source_cleanup_lines_args old_lines; | |
d318976c FN |
1689 | |
1690 | if (stream == NULL) | |
e2e0b3e5 | 1691 | internal_error (__FILE__, __LINE__, _("called with NULL file pointer!")); |
d318976c | 1692 | |
d318976c FN |
1693 | old_lines.old_line = source_line_number; |
1694 | old_lines.old_file = source_file_name; | |
86eb7e95 | 1695 | old_cleanups = make_cleanup (source_cleanup_lines, &old_lines); |
d318976c FN |
1696 | source_line_number = 0; |
1697 | source_file_name = file; | |
d318976c | 1698 | |
d3839ede PA |
1699 | make_cleanup_restore_integer (&interpreter_async); |
1700 | interpreter_async = 0; | |
1701 | ||
17d92a02 | 1702 | { |
04bd08de | 1703 | volatile struct gdb_exception e; |
cdb27c12 | 1704 | |
04bd08de TT |
1705 | TRY_CATCH (e, RETURN_MASK_ERROR) |
1706 | { | |
1707 | read_command_file (stream); | |
1708 | } | |
17d92a02 AC |
1709 | switch (e.reason) |
1710 | { | |
1711 | case 0: | |
1712 | break; | |
1713 | case RETURN_ERROR: | |
1714 | /* Re-throw the error, but with the file name information | |
1715 | prepended. */ | |
109c3e39 AC |
1716 | throw_error (e.error, |
1717 | _("%s:%d: Error in sourced command file:\n%s"), | |
637537d0 | 1718 | source_file_name, source_line_number, e.message); |
17d92a02 | 1719 | default: |
e2e0b3e5 | 1720 | internal_error (__FILE__, __LINE__, _("bad reason")); |
17d92a02 AC |
1721 | } |
1722 | } | |
d318976c FN |
1723 | |
1724 | do_cleanups (old_cleanups); | |
1725 | } | |
1726 | ||
adb483fe DJ |
1727 | /* Print the definition of user command C to STREAM. Or, if C is a |
1728 | prefix command, show the definitions of all user commands under C | |
1729 | (recursively). PREFIX and NAME combined are the name of the | |
1730 | current command. */ | |
d318976c | 1731 | void |
6f937416 | 1732 | show_user_1 (struct cmd_list_element *c, const char *prefix, const char *name, |
adb483fe | 1733 | struct ui_file *stream) |
d318976c | 1734 | { |
d5b5ac79 | 1735 | struct command_line *cmdlines; |
d318976c | 1736 | |
adb483fe DJ |
1737 | if (c->prefixlist != NULL) |
1738 | { | |
64e61d29 | 1739 | const char *prefixname = c->prefixname; |
cdb27c12 | 1740 | |
adb483fe | 1741 | for (c = *c->prefixlist; c != NULL; c = c->next) |
fe978cb0 | 1742 | if (c->theclass == class_user || c->prefixlist != NULL) |
adb483fe DJ |
1743 | show_user_1 (c, prefixname, c->name, gdb_stdout); |
1744 | return; | |
1745 | } | |
1746 | ||
d318976c | 1747 | cmdlines = c->user_commands; |
adb483fe | 1748 | fprintf_filtered (stream, "User command \"%s%s\":\n", prefix, name); |
d318976c | 1749 | |
a9f116cb GKB |
1750 | if (!cmdlines) |
1751 | return; | |
79a45e25 | 1752 | print_command_lines (current_uiout, cmdlines, 1); |
d318976c | 1753 | fputs_filtered ("\n", stream); |
d318976c FN |
1754 | } |
1755 | ||
2370e853 TT |
1756 | \f |
1757 | ||
1758 | initialize_file_ftype _initialize_cli_script; | |
1759 | ||
1760 | void | |
1761 | _initialize_cli_script (void) | |
1762 | { | |
1763 | add_com ("document", class_support, document_command, _("\ | |
1764 | Document a user-defined command.\n\ | |
1765 | Give command name as argument. Give documentation on following lines.\n\ | |
1766 | End with a line of just \"end\".")); | |
1767 | add_com ("define", class_support, define_command, _("\ | |
1768 | Define a new command name. Command name is argument.\n\ | |
1769 | Definition appears on following lines, one command per line.\n\ | |
1770 | End with a line of just \"end\".\n\ | |
1771 | Use the \"document\" command to give documentation for the new command.\n\ | |
1772 | Commands defined in this way may have up to ten arguments.")); | |
1773 | ||
1774 | add_com ("while", class_support, while_command, _("\ | |
1775 | Execute nested commands WHILE the conditional expression is non zero.\n\ | |
1776 | The conditional expression must follow the word `while' and must in turn be\n\ | |
1777 | followed by a new line. The nested commands must be entered one per line,\n\ | |
1778 | and should be terminated by the word `end'.")); | |
1779 | ||
1780 | add_com ("if", class_support, if_command, _("\ | |
1781 | Execute nested commands once IF the conditional expression is non zero.\n\ | |
1782 | The conditional expression must follow the word `if' and must in turn be\n\ | |
1783 | followed by a new line. The nested commands must be entered one per line,\n\ | |
1784 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
1785 | is used, the same rules apply to its nested commands as to the first ones.")); | |
1786 | } |