Commit | Line | Data |
---|---|---|
d318976c | 1 | /* GDB CLI command scripting. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
8588b356 | 28 | #include "tracepoint.h" |
d318976c FN |
29 | #include "cli/cli-cmds.h" |
30 | #include "cli/cli-decode.h" | |
31 | #include "cli/cli-script.h" | |
c6ac7fc9 | 32 | #include "cli/cli-style.h" |
d318976c | 33 | |
6dddc817 | 34 | #include "extension.h" |
b4a14fd0 | 35 | #include "interps.h" |
bb2ec1b3 | 36 | #include "compile/compile.h" |
268a13a5 | 37 | #include "gdbsupport/gdb_string_view.h" |
8588b356 SM |
38 | #include "python/python.h" |
39 | #include "guile/guile.h" | |
d57a3c85 | 40 | |
df3ee9ca PA |
41 | #include <vector> |
42 | ||
ebcd3b23 | 43 | /* Prototypes for local functions. */ |
d318976c | 44 | |
d318976c | 45 | static enum command_control_type |
60b3cef2 TT |
46 | recurse_read_control_structure |
47 | (gdb::function_view<const char * ()> read_next_line_func, | |
48 | struct command_line *current_cmd, | |
49 | gdb::function_view<void (const char *)> validator); | |
d318976c | 50 | |
7a2c85f2 TT |
51 | static void do_define_command (const char *comname, int from_tty, |
52 | const counted_command_line *commands); | |
53 | ||
992a7040 | 54 | static const char *read_next_line (); |
3c1179ff | 55 | |
16026cd7 | 56 | /* Level of control structure when reading. */ |
d318976c FN |
57 | static int control_level; |
58 | ||
16026cd7 AS |
59 | /* Level of control structure when executing. */ |
60 | static int command_nest_depth = 1; | |
61 | ||
62 | /* This is to prevent certain commands being printed twice. */ | |
63 | static int suppress_next_print_command_trace = 0; | |
64 | ||
8588b356 SM |
65 | /* Command element for the 'while' command. */ |
66 | static cmd_list_element *while_cmd_element = nullptr; | |
67 | ||
68 | /* Command element for the 'if' command. */ | |
69 | static cmd_list_element *if_cmd_element = nullptr; | |
70 | ||
71 | /* Command element for the 'define' command. */ | |
72 | static cmd_list_element *define_cmd_element = nullptr; | |
73 | ||
d318976c | 74 | /* Structure for arguments to user defined functions. */ |
df3ee9ca PA |
75 | |
76 | class user_args | |
77 | { | |
78 | public: | |
79 | /* Save the command line and store the locations of arguments passed | |
80 | to the user defined function. */ | |
81 | explicit user_args (const char *line); | |
82 | ||
83 | /* Insert the stored user defined arguments into the $arg arguments | |
84 | found in LINE. */ | |
85 | std::string insert_args (const char *line) const; | |
86 | ||
87 | private: | |
88 | /* Disable copy/assignment. (Since the elements of A point inside | |
89 | COMMAND, copying would need to reconstruct the A vector in the | |
90 | new copy.) */ | |
91 | user_args (const user_args &) =delete; | |
92 | user_args &operator= (const user_args &) =delete; | |
93 | ||
94 | /* It is necessary to store a copy of the command line to ensure | |
95 | that the arguments are not overwritten before they are used. */ | |
96 | std::string m_command_line; | |
97 | ||
98 | /* The arguments. Each element points inside M_COMMAND_LINE. */ | |
8345c4a2 | 99 | std::vector<gdb::string_view> m_args; |
df3ee9ca PA |
100 | }; |
101 | ||
102 | /* The stack of arguments passed to user defined functions. We need a | |
103 | stack because user-defined functions can call other user-defined | |
104 | functions. */ | |
105 | static std::vector<std::unique_ptr<user_args>> user_args_stack; | |
106 | ||
107 | /* An RAII-base class used to push/pop args on the user args | |
108 | stack. */ | |
109 | struct scoped_user_args_level | |
110 | { | |
111 | /* Parse the command line and push the arguments in the user args | |
112 | stack. */ | |
113 | explicit scoped_user_args_level (const char *line) | |
d318976c | 114 | { |
df3ee9ca | 115 | user_args_stack.emplace_back (new user_args (line)); |
d318976c | 116 | } |
df3ee9ca PA |
117 | |
118 | /* Pop the current user arguments from the stack. */ | |
119 | ~scoped_user_args_level () | |
120 | { | |
121 | user_args_stack.pop_back (); | |
122 | } | |
123 | }; | |
d318976c FN |
124 | |
125 | \f | |
1e9c71b8 DE |
126 | /* Return non-zero if TYPE is a multi-line command (i.e., is terminated |
127 | by "end"). */ | |
128 | ||
129 | static int | |
130 | multi_line_command_p (enum command_control_type type) | |
131 | { | |
132 | switch (type) | |
133 | { | |
134 | case if_control: | |
135 | case while_control: | |
136 | case while_stepping_control: | |
137 | case commands_control: | |
bb2ec1b3 | 138 | case compile_control: |
1e9c71b8 | 139 | case python_control: |
ed3ef339 | 140 | case guile_control: |
7a2c85f2 | 141 | case define_control: |
1e9c71b8 DE |
142 | return 1; |
143 | default: | |
144 | return 0; | |
145 | } | |
146 | } | |
147 | ||
d318976c FN |
148 | /* Allocate, initialize a new command line structure for one of the |
149 | control commands (if/while). */ | |
150 | ||
151 | static struct command_line * | |
604c4576 | 152 | build_command_line (enum command_control_type type, const char *args) |
d318976c | 153 | { |
7a2c85f2 TT |
154 | if (args == NULL || *args == '\0') |
155 | { | |
156 | if (type == if_control) | |
157 | error (_("if command requires an argument.")); | |
158 | else if (type == while_control) | |
159 | error (_("while command requires an argument.")); | |
160 | else if (type == define_control) | |
161 | error (_("define command requires an argument.")); | |
162 | } | |
c8c12293 | 163 | gdb_assert (args != NULL); |
d318976c | 164 | |
12973681 | 165 | return new struct command_line (type, xstrdup (args)); |
d318976c FN |
166 | } |
167 | ||
168 | /* Build and return a new command structure for the control commands | |
169 | such as "if" and "while". */ | |
170 | ||
12973681 | 171 | counted_command_line |
a121b7c1 | 172 | get_command_line (enum command_control_type type, const char *arg) |
d318976c | 173 | { |
d318976c | 174 | /* Allocate and build a new command line structure. */ |
12973681 TT |
175 | counted_command_line cmd (build_command_line (type, arg), |
176 | command_lines_deleter ()); | |
d318976c FN |
177 | |
178 | /* Read in the body of this command. */ | |
60b3cef2 | 179 | if (recurse_read_control_structure (read_next_line, cmd.get (), 0) |
a7bdde9e | 180 | == invalid_control) |
d318976c | 181 | { |
40c03ae8 | 182 | warning (_("Error reading in canned sequence of commands.")); |
d318976c FN |
183 | return NULL; |
184 | } | |
185 | ||
d318976c FN |
186 | return cmd; |
187 | } | |
188 | ||
189 | /* Recursively print a command (including full control structures). */ | |
8926118c | 190 | |
d318976c FN |
191 | void |
192 | print_command_lines (struct ui_out *uiout, struct command_line *cmd, | |
193 | unsigned int depth) | |
194 | { | |
195 | struct command_line *list; | |
196 | ||
197 | list = cmd; | |
198 | while (list) | |
199 | { | |
d318976c | 200 | if (depth) |
112e8700 | 201 | uiout->spaces (2 * depth); |
d318976c FN |
202 | |
203 | /* A simple command, print it and continue. */ | |
204 | if (list->control_type == simple_control) | |
205 | { | |
112e8700 SM |
206 | uiout->field_string (NULL, list->line); |
207 | uiout->text ("\n"); | |
d318976c FN |
208 | list = list->next; |
209 | continue; | |
210 | } | |
211 | ||
212 | /* loop_continue to jump to the start of a while loop, print it | |
213 | and continue. */ | |
214 | if (list->control_type == continue_control) | |
215 | { | |
112e8700 SM |
216 | uiout->field_string (NULL, "loop_continue"); |
217 | uiout->text ("\n"); | |
d318976c FN |
218 | list = list->next; |
219 | continue; | |
220 | } | |
221 | ||
ebcd3b23 MS |
222 | /* loop_break to break out of a while loop, print it and |
223 | continue. */ | |
d318976c FN |
224 | if (list->control_type == break_control) |
225 | { | |
112e8700 SM |
226 | uiout->field_string (NULL, "loop_break"); |
227 | uiout->text ("\n"); | |
d318976c FN |
228 | list = list->next; |
229 | continue; | |
230 | } | |
231 | ||
ebcd3b23 MS |
232 | /* A while command. Recursively print its subcommands and |
233 | continue. */ | |
a7bdde9e VP |
234 | if (list->control_type == while_control |
235 | || list->control_type == while_stepping_control) | |
d318976c | 236 | { |
ebcd3b23 MS |
237 | /* For while-stepping, the line includes the 'while-stepping' |
238 | token. See comment in process_next_line for explanation. | |
239 | Here, take care not print 'while-stepping' twice. */ | |
a7bdde9e | 240 | if (list->control_type == while_control) |
112e8700 | 241 | uiout->field_fmt (NULL, "while %s", list->line); |
a7bdde9e | 242 | else |
112e8700 SM |
243 | uiout->field_string (NULL, list->line); |
244 | uiout->text ("\n"); | |
12973681 | 245 | print_command_lines (uiout, list->body_list_0.get (), depth + 1); |
d318976c | 246 | if (depth) |
112e8700 SM |
247 | uiout->spaces (2 * depth); |
248 | uiout->field_string (NULL, "end"); | |
249 | uiout->text ("\n"); | |
d318976c FN |
250 | list = list->next; |
251 | continue; | |
252 | } | |
253 | ||
ebcd3b23 | 254 | /* An if command. Recursively print both arms before |
30baf67b | 255 | continuing. */ |
d318976c FN |
256 | if (list->control_type == if_control) |
257 | { | |
112e8700 SM |
258 | uiout->field_fmt (NULL, "if %s", list->line); |
259 | uiout->text ("\n"); | |
ebcd3b23 | 260 | /* The true arm. */ |
12973681 | 261 | print_command_lines (uiout, list->body_list_0.get (), depth + 1); |
d318976c FN |
262 | |
263 | /* Show the false arm if it exists. */ | |
12973681 | 264 | if (list->body_list_1 != nullptr) |
d318976c FN |
265 | { |
266 | if (depth) | |
112e8700 SM |
267 | uiout->spaces (2 * depth); |
268 | uiout->field_string (NULL, "else"); | |
269 | uiout->text ("\n"); | |
12973681 | 270 | print_command_lines (uiout, list->body_list_1.get (), depth + 1); |
d318976c FN |
271 | } |
272 | ||
d318976c | 273 | if (depth) |
112e8700 SM |
274 | uiout->spaces (2 * depth); |
275 | uiout->field_string (NULL, "end"); | |
276 | uiout->text ("\n"); | |
d318976c FN |
277 | list = list->next; |
278 | continue; | |
279 | } | |
280 | ||
ebcd3b23 MS |
281 | /* A commands command. Print the breakpoint commands and |
282 | continue. */ | |
40c03ae8 EZ |
283 | if (list->control_type == commands_control) |
284 | { | |
285 | if (*(list->line)) | |
112e8700 | 286 | uiout->field_fmt (NULL, "commands %s", list->line); |
40c03ae8 | 287 | else |
112e8700 SM |
288 | uiout->field_string (NULL, "commands"); |
289 | uiout->text ("\n"); | |
12973681 | 290 | print_command_lines (uiout, list->body_list_0.get (), depth + 1); |
40c03ae8 | 291 | if (depth) |
112e8700 SM |
292 | uiout->spaces (2 * depth); |
293 | uiout->field_string (NULL, "end"); | |
294 | uiout->text ("\n"); | |
40c03ae8 EZ |
295 | list = list->next; |
296 | continue; | |
297 | } | |
298 | ||
d57a3c85 TJB |
299 | if (list->control_type == python_control) |
300 | { | |
112e8700 SM |
301 | uiout->field_string (NULL, "python"); |
302 | uiout->text ("\n"); | |
d57a3c85 | 303 | /* Don't indent python code at all. */ |
12973681 | 304 | print_command_lines (uiout, list->body_list_0.get (), 0); |
d57a3c85 | 305 | if (depth) |
112e8700 SM |
306 | uiout->spaces (2 * depth); |
307 | uiout->field_string (NULL, "end"); | |
308 | uiout->text ("\n"); | |
d57a3c85 TJB |
309 | list = list->next; |
310 | continue; | |
311 | } | |
312 | ||
bb2ec1b3 TT |
313 | if (list->control_type == compile_control) |
314 | { | |
112e8700 SM |
315 | uiout->field_string (NULL, "compile expression"); |
316 | uiout->text ("\n"); | |
12973681 | 317 | print_command_lines (uiout, list->body_list_0.get (), 0); |
bb2ec1b3 | 318 | if (depth) |
112e8700 SM |
319 | uiout->spaces (2 * depth); |
320 | uiout->field_string (NULL, "end"); | |
321 | uiout->text ("\n"); | |
bb2ec1b3 TT |
322 | list = list->next; |
323 | continue; | |
324 | } | |
325 | ||
ed3ef339 DE |
326 | if (list->control_type == guile_control) |
327 | { | |
112e8700 SM |
328 | uiout->field_string (NULL, "guile"); |
329 | uiout->text ("\n"); | |
12973681 | 330 | print_command_lines (uiout, list->body_list_0.get (), depth + 1); |
ed3ef339 | 331 | if (depth) |
112e8700 SM |
332 | uiout->spaces (2 * depth); |
333 | uiout->field_string (NULL, "end"); | |
334 | uiout->text ("\n"); | |
ed3ef339 DE |
335 | list = list->next; |
336 | continue; | |
337 | } | |
338 | ||
ebcd3b23 | 339 | /* Ignore illegal command type and try next. */ |
d318976c FN |
340 | list = list->next; |
341 | } /* while (list) */ | |
342 | } | |
d318976c | 343 | |
5913bcb0 AC |
344 | /* Handle pre-post hooks. */ |
345 | ||
a9921622 | 346 | class scoped_restore_hook_in |
5913bcb0 | 347 | { |
a9921622 | 348 | public: |
cdb27c12 | 349 | |
a9921622 TT |
350 | scoped_restore_hook_in (struct cmd_list_element *c) |
351 | : m_cmd (c) | |
352 | { | |
353 | } | |
354 | ||
355 | ~scoped_restore_hook_in () | |
356 | { | |
357 | m_cmd->hook_in = 0; | |
358 | } | |
359 | ||
360 | scoped_restore_hook_in (const scoped_restore_hook_in &) = delete; | |
361 | scoped_restore_hook_in &operator= (const scoped_restore_hook_in &) = delete; | |
362 | ||
363 | private: | |
364 | ||
365 | struct cmd_list_element *m_cmd; | |
366 | }; | |
5913bcb0 AC |
367 | |
368 | void | |
369 | execute_cmd_pre_hook (struct cmd_list_element *c) | |
370 | { | |
371 | if ((c->hook_pre) && (!c->hook_in)) | |
372 | { | |
a9921622 | 373 | scoped_restore_hook_in restore_hook (c); |
ebcd3b23 | 374 | c->hook_in = 1; /* Prevent recursive hooking. */ |
95a6b0a1 | 375 | execute_user_command (c->hook_pre, nullptr); |
5913bcb0 AC |
376 | } |
377 | } | |
378 | ||
379 | void | |
380 | execute_cmd_post_hook (struct cmd_list_element *c) | |
381 | { | |
382 | if ((c->hook_post) && (!c->hook_in)) | |
383 | { | |
a9921622 | 384 | scoped_restore_hook_in restore_hook (c); |
ebcd3b23 | 385 | c->hook_in = 1; /* Prevent recursive hooking. */ |
95a6b0a1 | 386 | execute_user_command (c->hook_post, nullptr); |
5913bcb0 AC |
387 | } |
388 | } | |
389 | ||
56bcdbea TT |
390 | /* See cli-script.h. */ |
391 | ||
392 | void | |
393 | execute_control_commands (struct command_line *cmdlines, int from_tty) | |
394 | { | |
395 | /* Set the instream to 0, indicating execution of a | |
396 | user-defined function. */ | |
397 | scoped_restore restore_instream | |
398 | = make_scoped_restore (¤t_ui->instream, nullptr); | |
399 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); | |
400 | scoped_restore save_nesting | |
401 | = make_scoped_restore (&command_nest_depth, command_nest_depth + 1); | |
402 | ||
403 | while (cmdlines) | |
404 | { | |
405 | enum command_control_type ret = execute_control_command (cmdlines, | |
406 | from_tty); | |
407 | if (ret != simple_control && ret != break_control) | |
408 | { | |
409 | warning (_("Error executing canned sequence of commands.")); | |
410 | break; | |
411 | } | |
412 | cmdlines = cmdlines->next; | |
413 | } | |
414 | } | |
415 | ||
416 | /* See cli-script.h. */ | |
417 | ||
418 | std::string | |
419 | execute_control_commands_to_string (struct command_line *commands, | |
420 | int from_tty) | |
421 | { | |
422 | /* GDB_STDOUT should be better already restored during these | |
423 | restoration callbacks. */ | |
424 | set_batch_flag_and_restore_page_info save_page_info; | |
425 | ||
426 | string_file str_file; | |
427 | ||
428 | { | |
429 | current_uiout->redirect (&str_file); | |
430 | ui_out_redirect_pop redirect_popper (current_uiout); | |
431 | ||
432 | scoped_restore save_stdout | |
433 | = make_scoped_restore (&gdb_stdout, &str_file); | |
434 | scoped_restore save_stderr | |
435 | = make_scoped_restore (&gdb_stderr, &str_file); | |
436 | scoped_restore save_stdlog | |
437 | = make_scoped_restore (&gdb_stdlog, &str_file); | |
438 | scoped_restore save_stdtarg | |
439 | = make_scoped_restore (&gdb_stdtarg, &str_file); | |
440 | scoped_restore save_stdtargerr | |
441 | = make_scoped_restore (&gdb_stdtargerr, &str_file); | |
442 | ||
443 | execute_control_commands (commands, from_tty); | |
444 | } | |
445 | ||
446 | return std::move (str_file.string ()); | |
447 | } | |
448 | ||
d318976c | 449 | void |
95a6b0a1 | 450 | execute_user_command (struct cmd_list_element *c, const char *args) |
d318976c | 451 | { |
12973681 | 452 | counted_command_line cmdlines_copy; |
d318976c | 453 | |
12973681 TT |
454 | /* Ensure that the user commands can't be deleted while they are |
455 | executing. */ | |
456 | cmdlines_copy = c->user_commands; | |
457 | if (cmdlines_copy == 0) | |
d318976c FN |
458 | /* Null command */ |
459 | return; | |
12973681 | 460 | struct command_line *cmdlines = cmdlines_copy.get (); |
d318976c | 461 | |
df3ee9ca | 462 | scoped_user_args_level push_user_args (args); |
5fe41fbf | 463 | |
ac991630 | 464 | if (user_args_stack.size () > max_user_call_depth) |
8a3fe4f8 | 465 | error (_("Max user call depth exceeded -- command aborted.")); |
20f01a46 | 466 | |
56bcdbea | 467 | execute_control_commands (cmdlines, 0); |
d318976c FN |
468 | } |
469 | ||
ebcd3b23 MS |
470 | /* This function is called every time GDB prints a prompt. It ensures |
471 | that errors and the like do not confuse the command tracing. */ | |
16026cd7 AS |
472 | |
473 | void | |
474 | reset_command_nest_depth (void) | |
475 | { | |
476 | command_nest_depth = 1; | |
477 | ||
478 | /* Just in case. */ | |
479 | suppress_next_print_command_trace = 0; | |
480 | } | |
481 | ||
482 | /* Print the command, prefixed with '+' to represent the call depth. | |
483 | This is slightly complicated because this function may be called | |
484 | from execute_command and execute_control_command. Unfortunately | |
485 | execute_command also prints the top level control commands. | |
486 | In these cases execute_command will call execute_control_command | |
487 | via while_command or if_command. Inner levels of 'if' and 'while' | |
488 | are dealt with directly. Therefore we can use these functions | |
489 | to determine whether the command has been printed already or not. */ | |
1263a9d5 | 490 | ATTRIBUTE_PRINTF (1, 2) |
16026cd7 | 491 | void |
1263a9d5 | 492 | print_command_trace (const char *fmt, ...) |
16026cd7 AS |
493 | { |
494 | int i; | |
495 | ||
496 | if (suppress_next_print_command_trace) | |
497 | { | |
498 | suppress_next_print_command_trace = 0; | |
499 | return; | |
500 | } | |
501 | ||
502 | if (!source_verbose && !trace_commands) | |
503 | return; | |
504 | ||
505 | for (i=0; i < command_nest_depth; i++) | |
506 | printf_filtered ("+"); | |
507 | ||
1263a9d5 TT |
508 | va_list args; |
509 | ||
510 | va_start (args, fmt); | |
511 | vprintf_filtered (fmt, args); | |
512 | va_end (args); | |
513 | puts_filtered ("\n"); | |
16026cd7 AS |
514 | } |
515 | ||
3a87ae65 SM |
516 | /* Helper for execute_control_command. */ |
517 | ||
518 | static enum command_control_type | |
56bcdbea | 519 | execute_control_command_1 (struct command_line *cmd, int from_tty) |
d318976c | 520 | { |
d318976c | 521 | struct command_line *current; |
f976f6d4 AC |
522 | struct value *val; |
523 | struct value *val_mark; | |
d318976c FN |
524 | int loop; |
525 | enum command_control_type ret; | |
d318976c | 526 | |
4d2acc65 AC |
527 | /* Start by assuming failure, if a problem is detected, the code |
528 | below will simply "break" out of the switch. */ | |
529 | ret = invalid_control; | |
530 | ||
d318976c FN |
531 | switch (cmd->control_type) |
532 | { | |
533 | case simple_control: | |
b0646401 PA |
534 | { |
535 | /* A simple command, execute it and return. */ | |
01770bbd | 536 | std::string new_line = insert_user_defined_cmd_args (cmd->line); |
56bcdbea | 537 | execute_command (new_line.c_str (), from_tty); |
b0646401 PA |
538 | ret = cmd->control_type; |
539 | break; | |
540 | } | |
d318976c FN |
541 | |
542 | case continue_control: | |
16026cd7 AS |
543 | print_command_trace ("loop_continue"); |
544 | ||
545 | /* Return for "continue", and "break" so we can either | |
546 | continue the loop at the top, or break out. */ | |
547 | ret = cmd->control_type; | |
548 | break; | |
549 | ||
d318976c | 550 | case break_control: |
16026cd7 AS |
551 | print_command_trace ("loop_break"); |
552 | ||
d318976c FN |
553 | /* Return for "continue", and "break" so we can either |
554 | continue the loop at the top, or break out. */ | |
555 | ret = cmd->control_type; | |
556 | break; | |
557 | ||
558 | case while_control: | |
559 | { | |
1263a9d5 | 560 | print_command_trace ("while %s", cmd->line); |
16026cd7 | 561 | |
d318976c | 562 | /* Parse the loop control expression for the while statement. */ |
01770bbd | 563 | std::string new_line = insert_user_defined_cmd_args (cmd->line); |
4d01a485 | 564 | expression_up expr = parse_expression (new_line.c_str ()); |
d318976c FN |
565 | |
566 | ret = simple_control; | |
567 | loop = 1; | |
568 | ||
569 | /* Keep iterating so long as the expression is true. */ | |
570 | while (loop == 1) | |
571 | { | |
572 | int cond_result; | |
573 | ||
574 | QUIT; | |
575 | ||
576 | /* Evaluate the expression. */ | |
577 | val_mark = value_mark (); | |
4d01a485 | 578 | val = evaluate_expression (expr.get ()); |
d318976c FN |
579 | cond_result = value_true (val); |
580 | value_free_to_mark (val_mark); | |
581 | ||
582 | /* If the value is false, then break out of the loop. */ | |
583 | if (!cond_result) | |
584 | break; | |
585 | ||
586 | /* Execute the body of the while statement. */ | |
12973681 | 587 | current = cmd->body_list_0.get (); |
d318976c FN |
588 | while (current) |
589 | { | |
b51b225e TT |
590 | scoped_restore save_nesting |
591 | = make_scoped_restore (&command_nest_depth, command_nest_depth + 1); | |
56bcdbea | 592 | ret = execute_control_command_1 (current, from_tty); |
d318976c FN |
593 | |
594 | /* If we got an error, or a "break" command, then stop | |
595 | looping. */ | |
596 | if (ret == invalid_control || ret == break_control) | |
597 | { | |
598 | loop = 0; | |
599 | break; | |
600 | } | |
601 | ||
602 | /* If we got a "continue" command, then restart the loop | |
603 | at this point. */ | |
604 | if (ret == continue_control) | |
605 | break; | |
606 | ||
607 | /* Get the next statement. */ | |
608 | current = current->next; | |
609 | } | |
610 | } | |
611 | ||
612 | /* Reset RET so that we don't recurse the break all the way down. */ | |
613 | if (ret == break_control) | |
614 | ret = simple_control; | |
615 | ||
616 | break; | |
617 | } | |
618 | ||
619 | case if_control: | |
620 | { | |
1263a9d5 | 621 | print_command_trace ("if %s", cmd->line); |
16026cd7 | 622 | |
d318976c | 623 | /* Parse the conditional for the if statement. */ |
01770bbd | 624 | std::string new_line = insert_user_defined_cmd_args (cmd->line); |
4d01a485 | 625 | expression_up expr = parse_expression (new_line.c_str ()); |
d318976c FN |
626 | |
627 | current = NULL; | |
628 | ret = simple_control; | |
629 | ||
630 | /* Evaluate the conditional. */ | |
631 | val_mark = value_mark (); | |
4d01a485 | 632 | val = evaluate_expression (expr.get ()); |
d318976c | 633 | |
ebcd3b23 MS |
634 | /* Choose which arm to take commands from based on the value |
635 | of the conditional expression. */ | |
d318976c | 636 | if (value_true (val)) |
12973681 TT |
637 | current = cmd->body_list_0.get (); |
638 | else if (cmd->body_list_1 != nullptr) | |
639 | current = cmd->body_list_1.get (); | |
d318976c FN |
640 | value_free_to_mark (val_mark); |
641 | ||
642 | /* Execute commands in the given arm. */ | |
643 | while (current) | |
644 | { | |
b51b225e TT |
645 | scoped_restore save_nesting |
646 | = make_scoped_restore (&command_nest_depth, command_nest_depth + 1); | |
56bcdbea | 647 | ret = execute_control_command_1 (current, from_tty); |
d318976c FN |
648 | |
649 | /* If we got an error, get out. */ | |
650 | if (ret != simple_control) | |
651 | break; | |
652 | ||
653 | /* Get the next statement in the body. */ | |
654 | current = current->next; | |
655 | } | |
656 | ||
657 | break; | |
658 | } | |
1e9c71b8 | 659 | |
40c03ae8 EZ |
660 | case commands_control: |
661 | { | |
ebcd3b23 MS |
662 | /* Breakpoint commands list, record the commands in the |
663 | breakpoint's command list and return. */ | |
01770bbd | 664 | std::string new_line = insert_user_defined_cmd_args (cmd->line); |
b0646401 | 665 | ret = commands_from_control_command (new_line.c_str (), cmd); |
40c03ae8 EZ |
666 | break; |
667 | } | |
1e9c71b8 | 668 | |
bb2ec1b3 | 669 | case compile_control: |
5c65b58a JK |
670 | eval_compile_command (cmd, NULL, cmd->control_u.compile.scope, |
671 | cmd->control_u.compile.scope_data); | |
bb2ec1b3 TT |
672 | ret = simple_control; |
673 | break; | |
674 | ||
7a2c85f2 TT |
675 | case define_control: |
676 | print_command_trace ("define %s", cmd->line); | |
677 | do_define_command (cmd->line, 0, &cmd->body_list_0); | |
678 | ret = simple_control; | |
679 | break; | |
680 | ||
d57a3c85 | 681 | case python_control: |
ed3ef339 | 682 | case guile_control: |
d57a3c85 | 683 | { |
6dddc817 | 684 | eval_ext_lang_from_control_command (cmd); |
d57a3c85 TJB |
685 | ret = simple_control; |
686 | break; | |
687 | } | |
d318976c FN |
688 | |
689 | default: | |
40c03ae8 | 690 | warning (_("Invalid control type in canned commands structure.")); |
4d2acc65 | 691 | break; |
d318976c FN |
692 | } |
693 | ||
d318976c FN |
694 | return ret; |
695 | } | |
696 | ||
3a87ae65 | 697 | enum command_control_type |
56bcdbea | 698 | execute_control_command (struct command_line *cmd, int from_tty) |
3a87ae65 | 699 | { |
65d1cd5f TV |
700 | if (!current_uiout->is_mi_like_p ()) |
701 | return execute_control_command_1 (cmd, from_tty); | |
702 | ||
3a87ae65 SM |
703 | /* Make sure we use the console uiout. It's possible that we are executing |
704 | breakpoint commands while running the MI interpreter. */ | |
705 | interp *console = interp_lookup (current_ui, INTERP_CONSOLE); | |
706 | scoped_restore save_uiout | |
29f94340 | 707 | = make_scoped_restore (¤t_uiout, console->interp_ui_out ()); |
3a87ae65 | 708 | |
56bcdbea | 709 | return execute_control_command_1 (cmd, from_tty); |
3a87ae65 SM |
710 | } |
711 | ||
d57a3c85 | 712 | /* Like execute_control_command, but first set |
ebcd3b23 | 713 | suppress_next_print_command_trace. */ |
d57a3c85 TJB |
714 | |
715 | enum command_control_type | |
716 | execute_control_command_untraced (struct command_line *cmd) | |
717 | { | |
718 | suppress_next_print_command_trace = 1; | |
719 | return execute_control_command (cmd); | |
720 | } | |
721 | ||
722 | ||
d318976c FN |
723 | /* "while" command support. Executes a body of statements while the |
724 | loop condition is nonzero. */ | |
725 | ||
2370e853 | 726 | static void |
0b39b52e | 727 | while_command (const char *arg, int from_tty) |
d318976c | 728 | { |
d318976c | 729 | control_level = 1; |
12973681 | 730 | counted_command_line command = get_command_line (while_control, arg); |
d318976c FN |
731 | |
732 | if (command == NULL) | |
733 | return; | |
734 | ||
b7b633e9 | 735 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
b4a14fd0 | 736 | |
93921405 | 737 | execute_control_command_untraced (command.get ()); |
d318976c FN |
738 | } |
739 | ||
740 | /* "if" command support. Execute either the true or false arm depending | |
741 | on the value of the if conditional. */ | |
742 | ||
2370e853 | 743 | static void |
0b39b52e | 744 | if_command (const char *arg, int from_tty) |
d318976c | 745 | { |
d318976c | 746 | control_level = 1; |
12973681 | 747 | counted_command_line command = get_command_line (if_control, arg); |
d318976c FN |
748 | |
749 | if (command == NULL) | |
750 | return; | |
751 | ||
b7b633e9 | 752 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
b4a14fd0 | 753 | |
93921405 | 754 | execute_control_command_untraced (command.get ()); |
d318976c FN |
755 | } |
756 | ||
df3ee9ca PA |
757 | /* Bind the incoming arguments for a user defined command to $arg0, |
758 | $arg1 ... $argN. */ | |
d318976c | 759 | |
df3ee9ca | 760 | user_args::user_args (const char *command_line) |
d318976c | 761 | { |
df3ee9ca | 762 | const char *p; |
d318976c | 763 | |
df3ee9ca PA |
764 | if (command_line == NULL) |
765 | return; | |
d318976c | 766 | |
df3ee9ca PA |
767 | m_command_line = command_line; |
768 | p = m_command_line.c_str (); | |
e28493f2 | 769 | |
d318976c FN |
770 | while (*p) |
771 | { | |
df3ee9ca | 772 | const char *start_arg; |
d318976c FN |
773 | int squote = 0; |
774 | int dquote = 0; | |
775 | int bsquote = 0; | |
776 | ||
d318976c FN |
777 | /* Strip whitespace. */ |
778 | while (*p == ' ' || *p == '\t') | |
779 | p++; | |
780 | ||
781 | /* P now points to an argument. */ | |
782 | start_arg = p; | |
d318976c FN |
783 | |
784 | /* Get to the end of this argument. */ | |
785 | while (*p) | |
786 | { | |
787 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
788 | break; | |
789 | else | |
790 | { | |
791 | if (bsquote) | |
792 | bsquote = 0; | |
793 | else if (*p == '\\') | |
794 | bsquote = 1; | |
795 | else if (squote) | |
796 | { | |
797 | if (*p == '\'') | |
798 | squote = 0; | |
799 | } | |
800 | else if (dquote) | |
801 | { | |
802 | if (*p == '"') | |
803 | dquote = 0; | |
804 | } | |
805 | else | |
806 | { | |
807 | if (*p == '\'') | |
808 | squote = 1; | |
809 | else if (*p == '"') | |
810 | dquote = 1; | |
811 | } | |
812 | p++; | |
813 | } | |
814 | } | |
815 | ||
df3ee9ca | 816 | m_args.emplace_back (start_arg, p - start_arg); |
d318976c | 817 | } |
d318976c FN |
818 | } |
819 | ||
ebcd3b23 MS |
820 | /* Given character string P, return a point to the first argument |
821 | ($arg), or NULL if P contains no arguments. */ | |
d318976c | 822 | |
b0646401 PA |
823 | static const char * |
824 | locate_arg (const char *p) | |
d318976c FN |
825 | { |
826 | while ((p = strchr (p, '$'))) | |
827 | { | |
61012eef | 828 | if (startswith (p, "$arg") |
c03c782f | 829 | && (isdigit (p[4]) || p[4] == 'c')) |
d318976c FN |
830 | return p; |
831 | p++; | |
832 | } | |
833 | return NULL; | |
834 | } | |
835 | ||
01770bbd | 836 | /* See cli-script.h. */ |
d318976c | 837 | |
01770bbd PA |
838 | std::string |
839 | insert_user_defined_cmd_args (const char *line) | |
d318976c | 840 | { |
01770bbd | 841 | /* If we are not in a user-defined command, treat $argc, $arg0, et |
61d9b92f | 842 | cetera as normal convenience variables. */ |
df3ee9ca | 843 | if (user_args_stack.empty ()) |
b0646401 | 844 | return line; |
61d9b92f | 845 | |
df3ee9ca PA |
846 | const std::unique_ptr<user_args> &args = user_args_stack.back (); |
847 | return args->insert_args (line); | |
848 | } | |
849 | ||
850 | /* Insert the user defined arguments stored in user_args into the $arg | |
851 | arguments found in line. */ | |
852 | ||
853 | std::string | |
854 | user_args::insert_args (const char *line) const | |
855 | { | |
b0646401 PA |
856 | std::string new_line; |
857 | const char *p; | |
d318976c FN |
858 | |
859 | while ((p = locate_arg (line))) | |
860 | { | |
b0646401 | 861 | new_line.append (line, p - line); |
d318976c | 862 | |
c03c782f AS |
863 | if (p[4] == 'c') |
864 | { | |
df3ee9ca PA |
865 | new_line += std::to_string (m_args.size ()); |
866 | line = p + 5; | |
c03c782f AS |
867 | } |
868 | else | |
d318976c | 869 | { |
df3ee9ca PA |
870 | char *tmp; |
871 | unsigned long i; | |
872 | ||
873 | errno = 0; | |
874 | i = strtoul (p + 4, &tmp, 10); | |
875 | if ((i == 0 && tmp == p + 4) || errno != 0) | |
876 | line = p + 4; | |
877 | else if (i >= m_args.size ()) | |
878 | error (_("Missing argument %ld in user function."), i); | |
879 | else | |
880 | { | |
8345c4a2 | 881 | new_line.append (m_args[i].data (), m_args[i].length ()); |
df3ee9ca PA |
882 | line = tmp; |
883 | } | |
d318976c | 884 | } |
d318976c FN |
885 | } |
886 | /* Don't forget the tail. */ | |
b0646401 | 887 | new_line.append (line); |
d318976c | 888 | |
b0646401 | 889 | return new_line; |
d318976c FN |
890 | } |
891 | ||
892 | \f | |
2181a6c6 | 893 | /* Read next line from stdin. Passed to read_command_line_1 and |
3c1179ff | 894 | recurse_read_control_structure whenever we need to read commands |
2181a6c6 | 895 | from stdin. */ |
d318976c | 896 | |
992a7040 TT |
897 | static const char * |
898 | read_next_line () | |
d318976c | 899 | { |
f38d3ad1 | 900 | struct ui *ui = current_ui; |
3c1179ff | 901 | char *prompt_ptr, control_prompt[256]; |
d318976c | 902 | int i = 0; |
268a799a | 903 | int from_tty = ui->instream == ui->stdin_stream; |
d318976c FN |
904 | |
905 | if (control_level >= 254) | |
8a3fe4f8 | 906 | error (_("Control nesting too deep!")); |
d318976c FN |
907 | |
908 | /* Set a prompt based on the nesting of the control commands. */ | |
268a799a | 909 | if (from_tty |
f38d3ad1 | 910 | || (ui->instream == 0 && deprecated_readline_hook != NULL)) |
d318976c FN |
911 | { |
912 | for (i = 0; i < control_level; i++) | |
913 | control_prompt[i] = ' '; | |
914 | control_prompt[i] = '>'; | |
915 | control_prompt[i + 1] = '\0'; | |
916 | prompt_ptr = (char *) &control_prompt[0]; | |
917 | } | |
918 | else | |
919 | prompt_ptr = NULL; | |
920 | ||
89fbedf3 | 921 | return command_line_input (prompt_ptr, "commands"); |
3c1179ff VP |
922 | } |
923 | ||
604c4576 JG |
924 | /* Given an input line P, skip the command and return a pointer to the |
925 | first argument. */ | |
926 | ||
927 | static const char * | |
928 | line_first_arg (const char *p) | |
929 | { | |
930 | const char *first_arg = p + find_command_name_length (p); | |
931 | ||
f1735a53 | 932 | return skip_spaces (first_arg); |
604c4576 JG |
933 | } |
934 | ||
ebcd3b23 MS |
935 | /* Process one input line. If the command is an "end", return such an |
936 | indication to the caller. If PARSE_COMMANDS is true, strip leading | |
937 | whitespace (trailing whitespace is always stripped) in the line, | |
938 | attempt to recognize GDB control commands, and also return an | |
939 | indication if the command is an "else" or a nop. | |
940 | ||
3c1179ff VP |
941 | Otherwise, only "end" is recognized. */ |
942 | ||
943 | static enum misc_command_type | |
60b3cef2 TT |
944 | process_next_line (const char *p, struct command_line **command, |
945 | int parse_commands, | |
946 | gdb::function_view<void (const char *)> validator) | |
947 | ||
3c1179ff | 948 | { |
60b3cef2 TT |
949 | const char *p_end; |
950 | const char *p_start; | |
3c1179ff | 951 | int not_handled = 0; |
d318976c FN |
952 | |
953 | /* Not sure what to do here. */ | |
954 | if (p == NULL) | |
955 | return end_command; | |
956 | ||
311a4e6b | 957 | /* Strip trailing whitespace. */ |
50cb2941 JK |
958 | p_end = p + strlen (p); |
959 | while (p_end > p && (p_end[-1] == ' ' || p_end[-1] == '\t')) | |
960 | p_end--; | |
d318976c | 961 | |
50cb2941 | 962 | p_start = p; |
3630a92d | 963 | /* Strip leading whitespace. */ |
50cb2941 JK |
964 | while (p_start < p_end && (*p_start == ' ' || *p_start == '\t')) |
965 | p_start++; | |
d318976c | 966 | |
ebcd3b23 | 967 | /* 'end' is always recognized, regardless of parse_commands value. |
3630a92d | 968 | We also permit whitespace before end and after. */ |
61012eef | 969 | if (p_end - p_start == 3 && startswith (p_start, "end")) |
3630a92d | 970 | return end_command; |
604c4576 | 971 | |
311a4e6b | 972 | if (parse_commands) |
d318976c | 973 | { |
604c4576 JG |
974 | /* Resolve command abbreviations (e.g. 'ws' for 'while-stepping'). */ |
975 | const char *cmd_name = p; | |
976 | struct cmd_list_element *cmd | |
977 | = lookup_cmd_1 (&cmd_name, cmdlist, NULL, 1); | |
f1735a53 | 978 | cmd_name = skip_spaces (cmd_name); |
dc4bde35 | 979 | bool inline_cmd = *cmd_name != '\0'; |
604c4576 | 980 | |
ebcd3b23 | 981 | /* If commands are parsed, we skip initial spaces. Otherwise, |
3630a92d VP |
982 | which is the case for Python commands and documentation |
983 | (see the 'document' command), spaces are preserved. */ | |
50cb2941 | 984 | p = p_start; |
3630a92d | 985 | |
311a4e6b | 986 | /* Blanks and comments don't really do anything, but we need to |
ebcd3b23 MS |
987 | distinguish them from else, end and other commands which can |
988 | be executed. */ | |
50cb2941 | 989 | if (p_end == p || p[0] == '#') |
311a4e6b TJB |
990 | return nop_command; |
991 | ||
992 | /* Is the else clause of an if control structure? */ | |
61012eef | 993 | if (p_end - p == 4 && startswith (p, "else")) |
311a4e6b TJB |
994 | return else_command; |
995 | ||
ebcd3b23 MS |
996 | /* Check for while, if, break, continue, etc and build a new |
997 | command line structure for them. */ | |
8588b356 | 998 | if (cmd == while_stepping_cmd_element) |
a7bdde9e VP |
999 | { |
1000 | /* Because validate_actionline and encode_action lookup | |
1001 | command's line as command, we need the line to | |
1002 | include 'while-stepping'. | |
1003 | ||
1004 | For 'ws' alias, the command will have 'ws', not expanded | |
ebcd3b23 | 1005 | to 'while-stepping'. This is intentional -- we don't |
a7bdde9e | 1006 | really want frontend to send a command list with 'ws', |
ebcd3b23 MS |
1007 | and next break-info returning command line with |
1008 | 'while-stepping'. This should work, but might cause the | |
1009 | breakpoint to be marked as changed while it's actually | |
1010 | not. */ | |
a7bdde9e VP |
1011 | *command = build_command_line (while_stepping_control, p); |
1012 | } | |
8588b356 SM |
1013 | else if (cmd == while_cmd_element) |
1014 | *command = build_command_line (while_control, line_first_arg (p)); | |
1015 | else if (cmd == if_cmd_element) | |
1016 | *command = build_command_line (if_control, line_first_arg (p)); | |
1017 | else if (cmd == commands_cmd_element) | |
1018 | *command = build_command_line (commands_control, line_first_arg (p)); | |
1019 | else if (cmd == define_cmd_element) | |
7a2c85f2 | 1020 | *command = build_command_line (define_control, line_first_arg (p)); |
8588b356 | 1021 | else if (cmd == python_cmd_element && !inline_cmd) |
311a4e6b TJB |
1022 | { |
1023 | /* Note that we ignore the inline "python command" form | |
1024 | here. */ | |
1025 | *command = build_command_line (python_control, ""); | |
1026 | } | |
8588b356 | 1027 | else if (cmd == compile_cmd_element && !inline_cmd) |
bb2ec1b3 TT |
1028 | { |
1029 | /* Note that we ignore the inline "compile command" form | |
1030 | here. */ | |
1031 | *command = build_command_line (compile_control, ""); | |
1032 | (*command)->control_u.compile.scope = COMPILE_I_INVALID_SCOPE; | |
1033 | } | |
8588b356 | 1034 | else if (cmd == guile_cmd_element && !inline_cmd) |
ed3ef339 DE |
1035 | { |
1036 | /* Note that we ignore the inline "guile command" form here. */ | |
1037 | *command = build_command_line (guile_control, ""); | |
1038 | } | |
61012eef | 1039 | else if (p_end - p == 10 && startswith (p, "loop_break")) |
12973681 | 1040 | *command = new struct command_line (break_control); |
61012eef | 1041 | else if (p_end - p == 13 && startswith (p, "loop_continue")) |
12973681 | 1042 | *command = new struct command_line (continue_control); |
311a4e6b TJB |
1043 | else |
1044 | not_handled = 1; | |
d318976c | 1045 | } |
311a4e6b TJB |
1046 | |
1047 | if (!parse_commands || not_handled) | |
d318976c FN |
1048 | { |
1049 | /* A normal command. */ | |
12973681 TT |
1050 | *command = new struct command_line (simple_control, |
1051 | savestring (p, p_end - p)); | |
d318976c FN |
1052 | } |
1053 | ||
a7bdde9e VP |
1054 | if (validator) |
1055 | { | |
a70b8144 | 1056 | try |
a7bdde9e | 1057 | { |
60b3cef2 | 1058 | validator ((*command)->line); |
a7bdde9e | 1059 | } |
230d2906 | 1060 | catch (const gdb_exception &ex) |
a7bdde9e | 1061 | { |
12973681 | 1062 | free_command_lines (command); |
eedc3f4f | 1063 | throw; |
a7bdde9e VP |
1064 | } |
1065 | } | |
1066 | ||
d318976c FN |
1067 | /* Nothing special. */ |
1068 | return ok_command; | |
1069 | } | |
1070 | ||
ebcd3b23 MS |
1071 | /* Recursively read in the control structures and create a |
1072 | command_line structure from them. Use read_next_line_func to | |
1073 | obtain lines of the command. */ | |
d318976c FN |
1074 | |
1075 | static enum command_control_type | |
60b3cef2 | 1076 | recurse_read_control_structure (gdb::function_view<const char * ()> read_next_line_func, |
a7bdde9e | 1077 | struct command_line *current_cmd, |
60b3cef2 | 1078 | gdb::function_view<void (const char *)> validator) |
d318976c | 1079 | { |
d318976c FN |
1080 | enum misc_command_type val; |
1081 | enum command_control_type ret; | |
8d49165d | 1082 | struct command_line *child_tail, *next; |
12973681 | 1083 | counted_command_line *current_body = ¤t_cmd->body_list_0; |
d318976c FN |
1084 | |
1085 | child_tail = NULL; | |
d318976c FN |
1086 | |
1087 | /* Sanity checks. */ | |
1088 | if (current_cmd->control_type == simple_control) | |
8a3fe4f8 | 1089 | error (_("Recursed on a simple control type.")); |
d318976c | 1090 | |
d318976c FN |
1091 | /* Read lines from the input stream and build control structures. */ |
1092 | while (1) | |
1093 | { | |
1094 | dont_repeat (); | |
1095 | ||
1096 | next = NULL; | |
3c1179ff | 1097 | val = process_next_line (read_next_line_func (), &next, |
ed3ef339 | 1098 | current_cmd->control_type != python_control |
bb2ec1b3 TT |
1099 | && current_cmd->control_type != guile_control |
1100 | && current_cmd->control_type != compile_control, | |
60b3cef2 | 1101 | validator); |
d318976c FN |
1102 | |
1103 | /* Just skip blanks and comments. */ | |
1104 | if (val == nop_command) | |
1105 | continue; | |
1106 | ||
1107 | if (val == end_command) | |
1108 | { | |
1e9c71b8 | 1109 | if (multi_line_command_p (current_cmd->control_type)) |
d318976c | 1110 | { |
40c03ae8 | 1111 | /* Success reading an entire canned sequence of commands. */ |
d318976c FN |
1112 | ret = simple_control; |
1113 | break; | |
1114 | } | |
1115 | else | |
1116 | { | |
1117 | ret = invalid_control; | |
1118 | break; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* Not the end of a control structure. */ | |
1123 | if (val == else_command) | |
1124 | { | |
1125 | if (current_cmd->control_type == if_control | |
12973681 | 1126 | && current_body == ¤t_cmd->body_list_0) |
d318976c | 1127 | { |
12973681 | 1128 | current_body = ¤t_cmd->body_list_1; |
d318976c FN |
1129 | child_tail = NULL; |
1130 | continue; | |
1131 | } | |
1132 | else | |
1133 | { | |
1134 | ret = invalid_control; | |
1135 | break; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | if (child_tail) | |
1140 | { | |
1141 | child_tail->next = next; | |
1142 | } | |
1143 | else | |
12973681 | 1144 | *current_body = counted_command_line (next, command_lines_deleter ()); |
d318976c FN |
1145 | |
1146 | child_tail = next; | |
1147 | ||
1148 | /* If the latest line is another control structure, then recurse | |
1149 | on it. */ | |
1e9c71b8 | 1150 | if (multi_line_command_p (next->control_type)) |
d318976c FN |
1151 | { |
1152 | control_level++; | |
a7bdde9e | 1153 | ret = recurse_read_control_structure (read_next_line_func, next, |
60b3cef2 | 1154 | validator); |
d318976c FN |
1155 | control_level--; |
1156 | ||
1157 | if (ret != simple_control) | |
1158 | break; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | dont_repeat (); | |
1163 | ||
1164 | return ret; | |
1165 | } | |
1166 | ||
1167 | /* Read lines from the input stream and accumulate them in a chain of | |
1168 | struct command_line's, which is then returned. For input from a | |
1169 | terminal, the special command "end" is used to mark the end of the | |
311a4e6b TJB |
1170 | input, and is not included in the returned chain of commands. |
1171 | ||
1172 | If PARSE_COMMANDS is true, strip leading whitespace (trailing whitespace | |
1173 | is always stripped) in the line and attempt to recognize GDB control | |
1174 | commands. Otherwise, only "end" is recognized. */ | |
d318976c FN |
1175 | |
1176 | #define END_MESSAGE "End with a line saying just \"end\"." | |
1177 | ||
12973681 | 1178 | counted_command_line |
295dc222 | 1179 | read_command_lines (const char *prompt_arg, int from_tty, int parse_commands, |
60b3cef2 | 1180 | gdb::function_view<void (const char *)> validator) |
d318976c | 1181 | { |
268a799a | 1182 | if (from_tty && input_interactive_p (current_ui)) |
d318976c | 1183 | { |
698ba934 DJ |
1184 | if (deprecated_readline_begin_hook) |
1185 | { | |
ebcd3b23 | 1186 | /* Note - intentional to merge messages with no newline. */ |
9a2b4c1b MS |
1187 | (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg, |
1188 | END_MESSAGE); | |
698ba934 DJ |
1189 | } |
1190 | else | |
c119e040 | 1191 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); |
d318976c FN |
1192 | } |
1193 | ||
c41535fd EZ |
1194 | |
1195 | /* Reading commands assumes the CLI behavior, so temporarily | |
1196 | override the current interpreter with CLI. */ | |
12973681 | 1197 | counted_command_line head (nullptr, command_lines_deleter ()); |
c41535fd EZ |
1198 | if (current_interp_named_p (INTERP_CONSOLE)) |
1199 | head = read_command_lines_1 (read_next_line, parse_commands, | |
60b3cef2 | 1200 | validator); |
c41535fd EZ |
1201 | else |
1202 | { | |
be0d7abb | 1203 | scoped_restore_interp interp_restorer (INTERP_CONSOLE); |
c41535fd EZ |
1204 | |
1205 | head = read_command_lines_1 (read_next_line, parse_commands, | |
60b3cef2 | 1206 | validator); |
c41535fd | 1207 | } |
3c1179ff | 1208 | |
268a799a PA |
1209 | if (from_tty && input_interactive_p (current_ui) |
1210 | && deprecated_readline_end_hook) | |
3c1179ff VP |
1211 | { |
1212 | (*deprecated_readline_end_hook) (); | |
1213 | } | |
1214 | return (head); | |
1215 | } | |
1216 | ||
1217 | /* Act the same way as read_command_lines, except that each new line is | |
1218 | obtained using READ_NEXT_LINE_FUNC. */ | |
1219 | ||
12973681 | 1220 | counted_command_line |
60b3cef2 TT |
1221 | read_command_lines_1 (gdb::function_view<const char * ()> read_next_line_func, |
1222 | int parse_commands, | |
1223 | gdb::function_view<void (const char *)> validator) | |
3c1179ff | 1224 | { |
93921405 | 1225 | struct command_line *tail, *next; |
12973681 | 1226 | counted_command_line head (nullptr, command_lines_deleter ()); |
3c1179ff VP |
1227 | enum command_control_type ret; |
1228 | enum misc_command_type val; | |
1229 | ||
1230 | control_level = 0; | |
93921405 | 1231 | tail = NULL; |
d318976c FN |
1232 | |
1233 | while (1) | |
1234 | { | |
f429d7d0 | 1235 | dont_repeat (); |
a7bdde9e | 1236 | val = process_next_line (read_next_line_func (), &next, parse_commands, |
60b3cef2 | 1237 | validator); |
d318976c FN |
1238 | |
1239 | /* Ignore blank lines or comments. */ | |
1240 | if (val == nop_command) | |
1241 | continue; | |
1242 | ||
1243 | if (val == end_command) | |
1244 | { | |
1245 | ret = simple_control; | |
1246 | break; | |
1247 | } | |
1248 | ||
1249 | if (val != ok_command) | |
1250 | { | |
1251 | ret = invalid_control; | |
1252 | break; | |
1253 | } | |
1254 | ||
1e9c71b8 | 1255 | if (multi_line_command_p (next->control_type)) |
d318976c FN |
1256 | { |
1257 | control_level++; | |
a7bdde9e | 1258 | ret = recurse_read_control_structure (read_next_line_func, next, |
60b3cef2 | 1259 | validator); |
d318976c FN |
1260 | control_level--; |
1261 | ||
1262 | if (ret == invalid_control) | |
1263 | break; | |
1264 | } | |
1265 | ||
1266 | if (tail) | |
1267 | { | |
1268 | tail->next = next; | |
1269 | } | |
1270 | else | |
1271 | { | |
12973681 | 1272 | head = counted_command_line (next, command_lines_deleter ()); |
d318976c FN |
1273 | } |
1274 | tail = next; | |
1275 | } | |
1276 | ||
1277 | dont_repeat (); | |
1278 | ||
93921405 TT |
1279 | if (ret == invalid_control) |
1280 | return NULL; | |
d318976c | 1281 | |
3c1179ff | 1282 | return head; |
d318976c FN |
1283 | } |
1284 | ||
1285 | /* Free a chain of struct command_line's. */ | |
1286 | ||
1287 | void | |
1288 | free_command_lines (struct command_line **lptr) | |
1289 | { | |
d5b5ac79 AC |
1290 | struct command_line *l = *lptr; |
1291 | struct command_line *next; | |
d318976c FN |
1292 | |
1293 | while (l) | |
1294 | { | |
d318976c | 1295 | next = l->next; |
12973681 | 1296 | delete l; |
d318976c FN |
1297 | l = next; |
1298 | } | |
0d70f41b | 1299 | *lptr = NULL; |
d318976c | 1300 | } |
d318976c | 1301 | \f |
adb483fe DJ |
1302 | /* Validate that *COMNAME is a valid name for a command. Return the |
1303 | containing command list, in case it starts with a prefix command. | |
1304 | The prefix must already exist. *COMNAME is advanced to point after | |
1305 | any prefix, and a NUL character overwrites the space after the | |
1306 | prefix. */ | |
1307 | ||
1308 | static struct cmd_list_element ** | |
0b39b52e | 1309 | validate_comname (const char **comname) |
d318976c | 1310 | { |
adb483fe | 1311 | struct cmd_list_element **list = &cmdlist; |
0b39b52e | 1312 | const char *p, *last_word; |
d318976c | 1313 | |
adb483fe | 1314 | if (*comname == 0) |
e2e0b3e5 | 1315 | error_no_arg (_("name of command to define")); |
d318976c | 1316 | |
adb483fe DJ |
1317 | /* Find the last word of the argument. */ |
1318 | p = *comname + strlen (*comname); | |
1319 | while (p > *comname && isspace (p[-1])) | |
1320 | p--; | |
1321 | while (p > *comname && !isspace (p[-1])) | |
1322 | p--; | |
1323 | last_word = p; | |
1324 | ||
1325 | /* Find the corresponding command list. */ | |
1326 | if (last_word != *comname) | |
1327 | { | |
1328 | struct cmd_list_element *c; | |
adb483fe DJ |
1329 | |
1330 | /* Separate the prefix and the command. */ | |
0b39b52e TT |
1331 | std::string prefix (*comname, last_word - 1); |
1332 | const char *tem = prefix.c_str (); | |
adb483fe DJ |
1333 | |
1334 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
1335 | if (c->prefixlist == NULL) | |
0b39b52e | 1336 | error (_("\"%s\" is not a prefix command."), prefix.c_str ()); |
adb483fe DJ |
1337 | |
1338 | list = c->prefixlist; | |
adb483fe DJ |
1339 | *comname = last_word; |
1340 | } | |
1341 | ||
1342 | p = *comname; | |
d318976c FN |
1343 | while (*p) |
1344 | { | |
be09caf1 | 1345 | if (!valid_cmd_char_p (*p)) |
8a3fe4f8 | 1346 | error (_("Junk in argument list: \"%s\""), p); |
d318976c FN |
1347 | p++; |
1348 | } | |
adb483fe DJ |
1349 | |
1350 | return list; | |
d318976c FN |
1351 | } |
1352 | ||
1353 | /* This is just a placeholder in the command data structures. */ | |
1354 | static void | |
898241a5 | 1355 | user_defined_command (const char *ignore, int from_tty) |
d318976c FN |
1356 | { |
1357 | } | |
1358 | ||
7a2c85f2 TT |
1359 | /* Define a user-defined command. If COMMANDS is NULL, then this is a |
1360 | top-level call and the commands will be read using | |
1361 | read_command_lines. Otherwise, it is a "define" command in an | |
1362 | existing command and the commands are provided. In the | |
1363 | non-top-level case, various prompts and warnings are disabled. */ | |
1364 | ||
2370e853 | 1365 | static void |
7a2c85f2 TT |
1366 | do_define_command (const char *comname, int from_tty, |
1367 | const counted_command_line *commands) | |
d318976c | 1368 | { |
d318976c FN |
1369 | enum cmd_hook_type |
1370 | { | |
1371 | CMD_NO_HOOK = 0, | |
1372 | CMD_PRE_HOOK, | |
1373 | CMD_POST_HOOK | |
1374 | }; | |
d36fc00b | 1375 | struct cmd_list_element *c, *newc, *hookc = 0, **list; |
0b39b52e | 1376 | const char *tem, *comfull; |
d318976c FN |
1377 | int hook_type = CMD_NO_HOOK; |
1378 | int hook_name_size = 0; | |
1379 | ||
1380 | #define HOOK_STRING "hook-" | |
1381 | #define HOOK_LEN 5 | |
1382 | #define HOOK_POST_STRING "hookpost-" | |
1383 | #define HOOK_POST_LEN 9 | |
1384 | ||
adb483fe DJ |
1385 | comfull = comname; |
1386 | list = validate_comname (&comname); | |
d318976c FN |
1387 | |
1388 | /* Look it up, and verify that we got an exact match. */ | |
0b39b52e TT |
1389 | tem = comname; |
1390 | c = lookup_cmd (&tem, *list, "", -1, 1); | |
5cb316ef | 1391 | if (c && strcmp (comname, c->name) != 0) |
d318976c FN |
1392 | c = 0; |
1393 | ||
7a2c85f2 | 1394 | if (c && commands == nullptr) |
d318976c | 1395 | { |
ab4e3d93 | 1396 | int q; |
cdb27c12 | 1397 | |
fe978cb0 | 1398 | if (c->theclass == class_user || c->theclass == class_alias) |
c6ac7fc9 PW |
1399 | { |
1400 | /* if C is a prefix command that was previously defined, | |
1401 | tell the user its subcommands will be kept, and ask | |
1402 | if ok to redefine the command. */ | |
1403 | if (c->prefixlist != nullptr) | |
1404 | q = (c->user_commands.get () == nullptr | |
1405 | || query (_("Keeping subcommands of prefix command \"%s\".\n" | |
1406 | "Redefine command \"%s\"? "), c->name, c->name)); | |
1407 | else | |
1408 | q = query (_("Redefine command \"%s\"? "), c->name); | |
1409 | } | |
d318976c | 1410 | else |
e2e0b3e5 | 1411 | q = query (_("Really redefine built-in command \"%s\"? "), c->name); |
ab4e3d93 | 1412 | if (!q) |
8a3fe4f8 | 1413 | error (_("Command \"%s\" not redefined."), c->name); |
d318976c FN |
1414 | } |
1415 | ||
1416 | /* If this new command is a hook, then mark the command which it | |
1417 | is hooking. Note that we allow hooking `help' commands, so that | |
1418 | we can hook the `stop' pseudo-command. */ | |
1419 | ||
1420 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
1421 | { | |
1422 | hook_type = CMD_PRE_HOOK; | |
1423 | hook_name_size = HOOK_LEN; | |
1424 | } | |
1425 | else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN)) | |
1426 | { | |
1427 | hook_type = CMD_POST_HOOK; | |
1428 | hook_name_size = HOOK_POST_LEN; | |
1429 | } | |
c6ac7fc9 | 1430 | |
d318976c FN |
1431 | if (hook_type != CMD_NO_HOOK) |
1432 | { | |
1433 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
0b39b52e TT |
1434 | tem = comname + hook_name_size; |
1435 | hookc = lookup_cmd (&tem, *list, "", -1, 0); | |
5cb316ef | 1436 | if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0) |
d318976c | 1437 | hookc = 0; |
7a2c85f2 | 1438 | if (!hookc && commands == nullptr) |
d318976c | 1439 | { |
9a2b4c1b MS |
1440 | warning (_("Your new `%s' command does not " |
1441 | "hook any existing command."), | |
adb483fe | 1442 | comfull); |
9e2f0ad4 | 1443 | if (!query (_("Proceed? "))) |
8a3fe4f8 | 1444 | error (_("Not confirmed.")); |
d318976c FN |
1445 | } |
1446 | } | |
1447 | ||
1b36a34b | 1448 | comname = xstrdup (comname); |
d318976c | 1449 | |
7a2c85f2 TT |
1450 | counted_command_line cmds; |
1451 | if (commands == nullptr) | |
1452 | { | |
1453 | std::string prompt | |
1454 | = string_printf ("Type commands for definition of \"%s\".", comfull); | |
60b3cef2 | 1455 | cmds = read_command_lines (prompt.c_str (), from_tty, 1, 0); |
7a2c85f2 TT |
1456 | } |
1457 | else | |
1458 | cmds = *commands; | |
d318976c | 1459 | |
c6ac7fc9 PW |
1460 | { |
1461 | struct cmd_list_element **c_prefixlist | |
1462 | = c == nullptr ? nullptr : c->prefixlist; | |
1463 | const char *c_prefixname = c == nullptr ? nullptr : c->prefixname; | |
1464 | ||
1465 | newc = add_cmd (comname, class_user, user_defined_command, | |
1466 | (c != nullptr && c->theclass == class_user) | |
1467 | ? c->doc : xstrdup ("User-defined."), list); | |
1468 | newc->user_commands = std::move (cmds); | |
1469 | ||
1470 | /* If we define or re-define a command that was previously defined | |
1471 | as a prefix, keep the prefix information. */ | |
1472 | if (c_prefixlist != nullptr) | |
1473 | { | |
1474 | newc->prefixlist = c_prefixlist; | |
1475 | newc->prefixname = c_prefixname; | |
1476 | /* allow_unknown: see explanation in equivalent logic in | |
1477 | define_prefix_command (). */ | |
1478 | newc->allow_unknown = newc->user_commands.get () != nullptr; | |
1479 | } | |
1480 | } | |
d318976c FN |
1481 | |
1482 | /* If this new command is a hook, then mark both commands as being | |
1483 | tied. */ | |
1484 | if (hookc) | |
1485 | { | |
1486 | switch (hook_type) | |
1487 | { | |
1488 | case CMD_PRE_HOOK: | |
1489 | hookc->hook_pre = newc; /* Target gets hooked. */ | |
ebcd3b23 | 1490 | newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */ |
d318976c FN |
1491 | break; |
1492 | case CMD_POST_HOOK: | |
f48ff60a | 1493 | hookc->hook_post = newc; /* Target gets hooked. */ |
9a2b4c1b MS |
1494 | newc->hookee_post = hookc; /* We are marked as hooking |
1495 | target cmd. */ | |
d318976c FN |
1496 | break; |
1497 | default: | |
ebcd3b23 | 1498 | /* Should never come here as hookc would be 0. */ |
e2e0b3e5 | 1499 | internal_error (__FILE__, __LINE__, _("bad switch")); |
d318976c FN |
1500 | } |
1501 | } | |
1502 | } | |
1503 | ||
7a2c85f2 TT |
1504 | static void |
1505 | define_command (const char *comname, int from_tty) | |
1506 | { | |
1507 | do_define_command (comname, from_tty, nullptr); | |
1508 | } | |
1509 | ||
2370e853 | 1510 | static void |
0b39b52e | 1511 | document_command (const char *comname, int from_tty) |
d318976c | 1512 | { |
adb483fe | 1513 | struct cmd_list_element *c, **list; |
6f937416 | 1514 | const char *tem; |
0b39b52e | 1515 | const char *comfull; |
d318976c | 1516 | |
adb483fe DJ |
1517 | comfull = comname; |
1518 | list = validate_comname (&comname); | |
d318976c | 1519 | |
adb483fe DJ |
1520 | tem = comname; |
1521 | c = lookup_cmd (&tem, *list, "", 0, 1); | |
d318976c | 1522 | |
fe978cb0 | 1523 | if (c->theclass != class_user) |
adb483fe | 1524 | error (_("Command \"%s\" is built-in."), comfull); |
d318976c | 1525 | |
295dc222 TT |
1526 | std::string prompt = string_printf ("Type documentation for \"%s\".", |
1527 | comfull); | |
1528 | counted_command_line doclines = read_command_lines (prompt.c_str (), | |
60b3cef2 | 1529 | from_tty, 0, 0); |
d318976c FN |
1530 | |
1531 | if (c->doc) | |
1947513d | 1532 | xfree ((char *) c->doc); |
d318976c FN |
1533 | |
1534 | { | |
d5b5ac79 AC |
1535 | struct command_line *cl1; |
1536 | int len = 0; | |
1947513d | 1537 | char *doc; |
d318976c | 1538 | |
93921405 | 1539 | for (cl1 = doclines.get (); cl1; cl1 = cl1->next) |
d318976c FN |
1540 | len += strlen (cl1->line) + 1; |
1541 | ||
1947513d TT |
1542 | doc = (char *) xmalloc (len + 1); |
1543 | *doc = 0; | |
d318976c | 1544 | |
93921405 | 1545 | for (cl1 = doclines.get (); cl1; cl1 = cl1->next) |
d318976c | 1546 | { |
1947513d | 1547 | strcat (doc, cl1->line); |
d318976c | 1548 | if (cl1->next) |
1947513d | 1549 | strcat (doc, "\n"); |
d318976c | 1550 | } |
1947513d TT |
1551 | |
1552 | c->doc = doc; | |
d318976c | 1553 | } |
d318976c | 1554 | } |
c6ac7fc9 PW |
1555 | |
1556 | /* Implementation of the "define-prefix" command. */ | |
1557 | ||
1558 | static void | |
1559 | define_prefix_command (const char *comname, int from_tty) | |
1560 | { | |
1561 | struct cmd_list_element *c, **list; | |
1562 | const char *tem; | |
1563 | const char *comfull; | |
1564 | ||
1565 | comfull = comname; | |
1566 | list = validate_comname (&comname); | |
1567 | ||
1568 | /* Look it up, and verify that we got an exact match. */ | |
1569 | tem = comname; | |
1570 | c = lookup_cmd (&tem, *list, "", -1, 1); | |
1571 | if (c != nullptr && strcmp (comname, c->name) != 0) | |
1572 | c = nullptr; | |
1573 | ||
1574 | if (c != nullptr && c->theclass != class_user) | |
1575 | error (_("Command \"%s\" is built-in."), comfull); | |
1576 | ||
1577 | if (c != nullptr && c->prefixlist != nullptr) | |
1578 | { | |
1579 | /* c is already a user defined prefix command. */ | |
1580 | return; | |
1581 | } | |
1582 | ||
1583 | /* If the command does not exist at all, create it. */ | |
1584 | if (c == nullptr) | |
1585 | { | |
1586 | comname = xstrdup (comname); | |
1587 | c = add_cmd (comname, class_user, user_defined_command, | |
1588 | xstrdup ("User-defined."), list); | |
1589 | } | |
1590 | ||
1591 | /* Allocate the c->prefixlist, which marks the command as a prefix | |
1592 | command. */ | |
1593 | c->prefixlist = new struct cmd_list_element*; | |
1594 | *(c->prefixlist) = nullptr; | |
1595 | c->prefixname = xstrprintf ("%s ", comfull); | |
1596 | /* If the prefix command C is not a command, then it must be followed | |
1597 | by known subcommands. Otherwise, if C is also a normal command, | |
1598 | it can be followed by C args that must not cause a 'subcommand' | |
1599 | not recognised error, and thus we must allow unknown. */ | |
1600 | c->allow_unknown = c->user_commands.get () != nullptr; | |
1601 | } | |
1602 | ||
d318976c | 1603 | \f |
ebcd3b23 | 1604 | /* Used to implement source_command. */ |
d318976c FN |
1605 | |
1606 | void | |
05159abe | 1607 | script_from_file (FILE *stream, const char *file) |
d318976c | 1608 | { |
d318976c | 1609 | if (stream == NULL) |
e2e0b3e5 | 1610 | internal_error (__FILE__, __LINE__, _("called with NULL file pointer!")); |
d318976c | 1611 | |
2ec845e7 TT |
1612 | scoped_restore restore_line_number |
1613 | = make_scoped_restore (&source_line_number, 0); | |
6caa91b6 SM |
1614 | scoped_restore restore_file |
1615 | = make_scoped_restore<std::string, const std::string &> (&source_file_name, | |
1616 | file); | |
cdb27c12 | 1617 | |
2ec845e7 | 1618 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
d318976c | 1619 | |
a70b8144 | 1620 | try |
2ec845e7 TT |
1621 | { |
1622 | read_command_file (stream); | |
1623 | } | |
230d2906 | 1624 | catch (const gdb_exception_error &e) |
2ec845e7 TT |
1625 | { |
1626 | /* Re-throw the error, but with the file name information | |
1627 | prepended. */ | |
1628 | throw_error (e.error, | |
1629 | _("%s:%d: Error in sourced command file:\n%s"), | |
3d6e9d23 TT |
1630 | source_file_name.c_str (), source_line_number, |
1631 | e.what ()); | |
2ec845e7 | 1632 | } |
d318976c FN |
1633 | } |
1634 | ||
adb483fe DJ |
1635 | /* Print the definition of user command C to STREAM. Or, if C is a |
1636 | prefix command, show the definitions of all user commands under C | |
1637 | (recursively). PREFIX and NAME combined are the name of the | |
1638 | current command. */ | |
d318976c | 1639 | void |
6f937416 | 1640 | show_user_1 (struct cmd_list_element *c, const char *prefix, const char *name, |
adb483fe | 1641 | struct ui_file *stream) |
d318976c | 1642 | { |
c6ac7fc9 PW |
1643 | if (cli_user_command_p (c)) |
1644 | { | |
1645 | struct command_line *cmdlines = c->user_commands.get (); | |
1646 | ||
1647 | fprintf_filtered (stream, "User %scommand \"", | |
1648 | c->prefixlist == NULL ? "" : "prefix "); | |
1649 | fprintf_styled (stream, title_style.style (), "%s%s", | |
1650 | prefix, name); | |
1651 | fprintf_filtered (stream, "\":\n"); | |
1652 | if (cmdlines) | |
1653 | { | |
1654 | print_command_lines (current_uiout, cmdlines, 1); | |
1655 | fputs_filtered ("\n", stream); | |
1656 | } | |
1657 | } | |
d318976c | 1658 | |
adb483fe DJ |
1659 | if (c->prefixlist != NULL) |
1660 | { | |
64e61d29 | 1661 | const char *prefixname = c->prefixname; |
cdb27c12 | 1662 | |
adb483fe | 1663 | for (c = *c->prefixlist; c != NULL; c = c->next) |
fe978cb0 | 1664 | if (c->theclass == class_user || c->prefixlist != NULL) |
adb483fe | 1665 | show_user_1 (c, prefixname, c->name, gdb_stdout); |
adb483fe DJ |
1666 | } |
1667 | ||
d318976c FN |
1668 | } |
1669 | ||
2370e853 TT |
1670 | void |
1671 | _initialize_cli_script (void) | |
1672 | { | |
c6ac7fc9 PW |
1673 | struct cmd_list_element *c; |
1674 | ||
1675 | /* "document", "define" and "define-prefix" use command_completer, | |
1676 | as this helps the user to either type the command name and/or | |
1677 | its prefixes. */ | |
1678 | c = add_com ("document", class_support, document_command, _("\ | |
2370e853 TT |
1679 | Document a user-defined command.\n\ |
1680 | Give command name as argument. Give documentation on following lines.\n\ | |
1681 | End with a line of just \"end\".")); | |
c6ac7fc9 | 1682 | set_cmd_completer (c, command_completer); |
8588b356 | 1683 | define_cmd_element = add_com ("define", class_support, define_command, _("\ |
2370e853 TT |
1684 | Define a new command name. Command name is argument.\n\ |
1685 | Definition appears on following lines, one command per line.\n\ | |
1686 | End with a line of just \"end\".\n\ | |
1687 | Use the \"document\" command to give documentation for the new command.\n\ | |
87a8eca7 PW |
1688 | Commands defined in this way may accept an unlimited number of arguments\n\ |
1689 | accessed via $arg0 .. $argN. $argc tells how many arguments have\n\ | |
1690 | been passed.")); | |
c6ac7fc9 PW |
1691 | set_cmd_completer (define_cmd_element, command_completer); |
1692 | c = add_com ("define-prefix", class_support, define_prefix_command, | |
1693 | _("\ | |
1694 | Define or mark a command as a user-defined prefix command.\n\ | |
1695 | User defined prefix commands can be used as prefix commands for\n\ | |
1696 | other user defined commands.\n\ | |
1697 | If the command already exists, it is changed to a prefix command.")); | |
1698 | set_cmd_completer (c, command_completer); | |
2370e853 | 1699 | |
8588b356 | 1700 | while_cmd_element = add_com ("while", class_support, while_command, _("\ |
2370e853 TT |
1701 | Execute nested commands WHILE the conditional expression is non zero.\n\ |
1702 | The conditional expression must follow the word `while' and must in turn be\n\ | |
1703 | followed by a new line. The nested commands must be entered one per line,\n\ | |
1704 | and should be terminated by the word `end'.")); | |
1705 | ||
8588b356 | 1706 | if_cmd_element = add_com ("if", class_support, if_command, _("\ |
2370e853 TT |
1707 | Execute nested commands once IF the conditional expression is non zero.\n\ |
1708 | The conditional expression must follow the word `if' and must in turn be\n\ | |
1709 | followed by a new line. The nested commands must be entered one per line,\n\ | |
1710 | and should be terminated by the word 'else' or `end'. If an else clause\n\ | |
1711 | is used, the same rules apply to its nested commands as to the first ones.")); | |
1712 | } |