1 /* MI Command Set - varobj commands.
3 Copyright (C) 2000, 2002, 2004, 2005, 2007, 2008
4 Free Software Foundation, Inc.
6 Contributed by Cygnus Solutions (a Red Hat company).
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "gdb_string.h"
32 const char mi_no_values[] = "--no-values";
33 const char mi_simple_values[] = "--simple-values";
34 const char mi_all_values[] = "--all-values";
36 extern int varobjdebug; /* defined in varobj.c. */
38 static void varobj_update_one (struct varobj *var,
39 enum print_values print_values,
42 static int mi_print_value_p (struct type *type, enum print_values print_values);
44 /* Print variable object VAR. The PRINT_VALUES parameter controls
45 if the value should be printed. The PRINT_EXPRESSION parameter
46 controls if the expression should be printed. */
48 print_varobj (struct varobj *var, enum print_values print_values,
51 struct type *gdb_type;
55 ui_out_field_string (uiout, "name", varobj_get_objname (var));
57 ui_out_field_string (uiout, "exp", varobj_get_expression (var));
58 ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
60 if (mi_print_value_p (varobj_get_gdb_type (var), print_values))
61 ui_out_field_string (uiout, "value", varobj_get_value (var));
63 type = varobj_get_type (var);
66 ui_out_field_string (uiout, "type", type);
70 thread_id = varobj_get_thread_id (var);
72 ui_out_field_int (uiout, "thread-id", thread_id);
74 if (varobj_get_frozen (var))
75 ui_out_field_int (uiout, "frozen", 1);
78 /* VAROBJ operations */
81 mi_cmd_var_create (char *command, char **argv, int argc)
83 CORE_ADDR frameaddr = 0;
88 struct cleanup *old_cleanups;
89 enum varobj_type var_type;
93 /* mi_error_message = xstrprintf ("mi_cmd_var_create: Usage:
94 ...."); return MI_CMD_ERROR; */
95 error (_("mi_cmd_var_create: Usage: NAME FRAME EXPRESSION."));
98 name = xstrdup (argv[0]);
99 /* Add cleanup for name. Must be free_current_contents as
100 name can be reallocated */
101 old_cleanups = make_cleanup (free_current_contents, &name);
103 frame = xstrdup (argv[1]);
104 make_cleanup (xfree, frame);
106 expr = xstrdup (argv[2]);
107 make_cleanup (xfree, expr);
109 if (strcmp (name, "-") == 0)
112 name = varobj_gen_name ();
114 else if (!isalpha (*name))
115 error (_("mi_cmd_var_create: name of object must begin with a letter"));
117 if (strcmp (frame, "*") == 0)
118 var_type = USE_CURRENT_FRAME;
119 else if (strcmp (frame, "@") == 0)
120 var_type = USE_SELECTED_FRAME;
123 var_type = USE_SPECIFIED_FRAME;
124 frameaddr = string_to_core_addr (frame);
128 fprintf_unfiltered (gdb_stdlog,
129 "Name=\"%s\", Frame=\"%s\" (0x%s), Expression=\"%s\"\n",
130 name, frame, paddr (frameaddr), expr);
132 var = varobj_create (name, expr, frameaddr, var_type);
135 error (_("mi_cmd_var_create: unable to create variable object"));
137 print_varobj (var, PRINT_ALL_VALUES, 0 /* don't print expression */);
139 do_cleanups (old_cleanups);
144 mi_cmd_var_delete (char *command, char **argv, int argc)
149 int children_only_p = 0;
150 struct cleanup *old_cleanups;
152 if (argc < 1 || argc > 2)
153 error (_("mi_cmd_var_delete: Usage: [-c] EXPRESSION."));
155 name = xstrdup (argv[0]);
156 /* Add cleanup for name. Must be free_current_contents as
157 name can be reallocated */
158 old_cleanups = make_cleanup (free_current_contents, &name);
160 /* If we have one single argument it cannot be '-c' or any string
161 starting with '-'. */
164 if (strcmp (name, "-c") == 0)
165 error (_("mi_cmd_var_delete: Missing required argument after '-c': variable object name"));
167 error (_("mi_cmd_var_delete: Illegal variable object name"));
170 /* If we have 2 arguments they must be '-c' followed by a string
171 which would be the variable name. */
174 if (strcmp (name, "-c") != 0)
175 error (_("mi_cmd_var_delete: Invalid option."));
177 do_cleanups (old_cleanups);
178 name = xstrdup (argv[1]);
179 make_cleanup (free_current_contents, &name);
182 /* If we didn't error out, now NAME contains the name of the
185 var = varobj_get_handle (name);
188 error (_("mi_cmd_var_delete: Variable object not found."));
190 numdel = varobj_delete (var, NULL, children_only_p);
192 ui_out_field_int (uiout, "ndeleted", numdel);
194 do_cleanups (old_cleanups);
199 mi_cmd_var_set_format (char *command, char **argv, int argc)
201 enum varobj_display_formats format;
207 error (_("mi_cmd_var_set_format: Usage: NAME FORMAT."));
209 /* Get varobj handle, if a valid var obj name was specified */
210 var = varobj_get_handle (argv[0]);
213 error (_("mi_cmd_var_set_format: Variable object not found"));
216 if (formspec == NULL)
217 error (_("mi_cmd_var_set_format: Must specify the format as: \"natural\", \"binary\", \"decimal\", \"hexadecimal\", or \"octal\""));
219 len = strlen (formspec);
221 if (strncmp (formspec, "natural", len) == 0)
222 format = FORMAT_NATURAL;
223 else if (strncmp (formspec, "binary", len) == 0)
224 format = FORMAT_BINARY;
225 else if (strncmp (formspec, "decimal", len) == 0)
226 format = FORMAT_DECIMAL;
227 else if (strncmp (formspec, "hexadecimal", len) == 0)
228 format = FORMAT_HEXADECIMAL;
229 else if (strncmp (formspec, "octal", len) == 0)
230 format = FORMAT_OCTAL;
232 error (_("mi_cmd_var_set_format: Unknown display format: must be: \"natural\", \"binary\", \"decimal\", \"hexadecimal\", or \"octal\""));
234 /* Set the format of VAR to given format */
235 varobj_set_display_format (var, format);
237 /* Report the new current format */
238 ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
240 /* Report the value in the new format */
241 ui_out_field_string (uiout, "value", varobj_get_value (var));
246 mi_cmd_var_set_frozen (char *command, char **argv, int argc)
252 error (_("-var-set-format: Usage: NAME FROZEN_FLAG."));
254 var = varobj_get_handle (argv[0]);
256 error (_("Variable object not found"));
258 if (strcmp (argv[1], "0") == 0)
260 else if (strcmp (argv[1], "1") == 0)
263 error (_("Invalid flag value"));
265 varobj_set_frozen (var, frozen);
267 /* We don't automatically return the new value, or what varobjs got new
268 values during unfreezing. If this information is required, client
269 should call -var-update explicitly. */
275 mi_cmd_var_show_format (char *command, char **argv, int argc)
277 enum varobj_display_formats format;
281 error (_("mi_cmd_var_show_format: Usage: NAME."));
283 /* Get varobj handle, if a valid var obj name was specified */
284 var = varobj_get_handle (argv[0]);
286 error (_("mi_cmd_var_show_format: Variable object not found"));
288 format = varobj_get_display_format (var);
290 /* Report the current format */
291 ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
296 mi_cmd_var_info_num_children (char *command, char **argv, int argc)
301 error (_("mi_cmd_var_info_num_children: Usage: NAME."));
303 /* Get varobj handle, if a valid var obj name was specified */
304 var = varobj_get_handle (argv[0]);
306 error (_("mi_cmd_var_info_num_children: Variable object not found"));
308 ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
312 /* Parse a string argument into a print_values value. */
314 static enum print_values
315 mi_parse_values_option (const char *arg)
317 if (strcmp (arg, "0") == 0
318 || strcmp (arg, mi_no_values) == 0)
319 return PRINT_NO_VALUES;
320 else if (strcmp (arg, "1") == 0
321 || strcmp (arg, mi_all_values) == 0)
322 return PRINT_ALL_VALUES;
323 else if (strcmp (arg, "2") == 0
324 || strcmp (arg, mi_simple_values) == 0)
325 return PRINT_SIMPLE_VALUES;
327 error (_("Unknown value for PRINT_VALUES\n\
328 Must be: 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
329 mi_no_values, mi_simple_values, mi_all_values);
332 /* Return 1 if given the argument PRINT_VALUES we should display
333 a value of type TYPE. */
336 mi_print_value_p (struct type *type, enum print_values print_values)
339 if (print_values == PRINT_NO_VALUES)
342 if (print_values == PRINT_ALL_VALUES)
349 type = check_typedef (type);
351 /* For PRINT_SIMPLE_VALUES, only print the value if it has a type
352 and that type is not a compound type. */
353 return (TYPE_CODE (type) != TYPE_CODE_ARRAY
354 && TYPE_CODE (type) != TYPE_CODE_STRUCT
355 && TYPE_CODE (type) != TYPE_CODE_UNION);
360 mi_cmd_var_list_children (char *command, char **argv, int argc)
363 VEC(varobj_p) *children;
364 struct varobj *child;
365 struct cleanup *cleanup_children;
367 enum print_values print_values;
370 if (argc != 1 && argc != 2)
371 error (_("mi_cmd_var_list_children: Usage: [PRINT_VALUES] NAME"));
373 /* Get varobj handle, if a valid var obj name was specified */
375 var = varobj_get_handle (argv[0]);
377 var = varobj_get_handle (argv[1]);
379 error (_("Variable object not found"));
381 children = varobj_list_children (var);
382 ui_out_field_int (uiout, "numchild", VEC_length (varobj_p, children));
384 print_values = mi_parse_values_option (argv[0]);
386 print_values = PRINT_NO_VALUES;
388 if (VEC_length (varobj_p, children) == 0)
391 if (mi_version (uiout) == 1)
392 cleanup_children = make_cleanup_ui_out_tuple_begin_end (uiout, "children");
394 cleanup_children = make_cleanup_ui_out_list_begin_end (uiout, "children");
395 for (ix = 0; VEC_iterate (varobj_p, children, ix, child); ++ix)
397 struct cleanup *cleanup_child;
398 cleanup_child = make_cleanup_ui_out_tuple_begin_end (uiout, "child");
399 print_varobj (child, print_values, 1 /* print expression */);
400 do_cleanups (cleanup_child);
402 do_cleanups (cleanup_children);
407 mi_cmd_var_info_type (char *command, char **argv, int argc)
412 error (_("mi_cmd_var_info_type: Usage: NAME."));
414 /* Get varobj handle, if a valid var obj name was specified */
415 var = varobj_get_handle (argv[0]);
417 error (_("mi_cmd_var_info_type: Variable object not found"));
419 ui_out_field_string (uiout, "type", varobj_get_type (var));
424 mi_cmd_var_info_path_expression (char *command, char **argv, int argc)
430 error (_("Usage: NAME."));
432 /* Get varobj handle, if a valid var obj name was specified. */
433 var = varobj_get_handle (argv[0]);
435 error (_("Variable object not found"));
437 path_expr = varobj_get_path_expr (var);
439 ui_out_field_string (uiout, "path_expr", path_expr);
445 mi_cmd_var_info_expression (char *command, char **argv, int argc)
447 enum varobj_languages lang;
451 error (_("mi_cmd_var_info_expression: Usage: NAME."));
453 /* Get varobj handle, if a valid var obj name was specified */
454 var = varobj_get_handle (argv[0]);
456 error (_("mi_cmd_var_info_expression: Variable object not found"));
458 lang = varobj_get_language (var);
460 ui_out_field_string (uiout, "lang", varobj_language_string[(int) lang]);
461 ui_out_field_string (uiout, "exp", varobj_get_expression (var));
466 mi_cmd_var_show_attributes (char *command, char **argv, int argc)
473 error (_("mi_cmd_var_show_attributes: Usage: NAME."));
475 /* Get varobj handle, if a valid var obj name was specified */
476 var = varobj_get_handle (argv[0]);
478 error (_("mi_cmd_var_show_attributes: Variable object not found"));
480 attr = varobj_get_attributes (var);
481 /* FIXME: define masks for attributes */
482 if (attr & 0x00000001)
485 attstr = "noneditable";
487 ui_out_field_string (uiout, "attr", attstr);
492 mi_cmd_var_evaluate_expression (char *command, char **argv, int argc)
497 error (_("mi_cmd_var_evaluate_expression: Usage: NAME."));
499 /* Get varobj handle, if a valid var obj name was specified */
500 var = varobj_get_handle (argv[0]);
502 error (_("mi_cmd_var_evaluate_expression: Variable object not found"));
504 ui_out_field_string (uiout, "value", varobj_get_value (var));
509 mi_cmd_var_assign (char *command, char **argv, int argc)
515 error (_("mi_cmd_var_assign: Usage: NAME EXPRESSION."));
517 /* Get varobj handle, if a valid var obj name was specified */
518 var = varobj_get_handle (argv[0]);
520 error (_("mi_cmd_var_assign: Variable object not found"));
522 if (!varobj_editable_p (var))
523 error (_("mi_cmd_var_assign: Variable object is not editable"));
525 expression = xstrdup (argv[1]);
527 if (!varobj_set_value (var, expression))
528 error (_("mi_cmd_var_assign: Could not assign expression to variable object"));
530 ui_out_field_string (uiout, "value", varobj_get_value (var));
535 mi_cmd_var_update (char *command, char **argv, int argc)
538 struct varobj **rootlist;
540 struct cleanup *cleanup;
543 enum print_values print_values;
545 if (argc != 1 && argc != 2)
546 error (_("mi_cmd_var_update: Usage: [PRINT_VALUES] NAME."));
554 print_values = mi_parse_values_option (argv[0]);
556 print_values = PRINT_NO_VALUES;
558 /* Check if the parameter is a "*" which means that we want
559 to update all variables */
561 if ((*name == '*' || *name == '@') && (*(name + 1) == '\0'))
563 nv = varobj_list (&rootlist);
564 cleanup = make_cleanup (xfree, rootlist);
565 if (mi_version (uiout) <= 1)
566 make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
568 make_cleanup_ui_out_list_begin_end (uiout, "changelist");
571 do_cleanups (cleanup);
577 if (*name == '*' || varobj_floating_p (*cr))
578 varobj_update_one (*cr, print_values, 0 /* implicit */);
581 do_cleanups (cleanup);
585 /* Get varobj handle, if a valid var obj name was specified */
586 var = varobj_get_handle (name);
588 error (_("mi_cmd_var_update: Variable object not found"));
590 if (mi_version (uiout) <= 1)
591 cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
593 cleanup = make_cleanup_ui_out_list_begin_end (uiout, "changelist");
594 varobj_update_one (var, print_values, 1 /* explicit */);
595 do_cleanups (cleanup);
600 /* Helper for mi_cmd_var_update(). */
603 varobj_update_one (struct varobj *var, enum print_values print_values,
606 struct varobj **changelist;
608 struct cleanup *cleanup = NULL;
611 nc = varobj_update (&var, &changelist, explicit);
613 /* nc >= 0 represents the number of changes reported into changelist.
614 nc < 0 means that an error occured or the the variable has
615 changed type (TYPE_CHANGED). */
621 if (mi_version (uiout) > 1)
622 cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
623 ui_out_field_string (uiout, "name", varobj_get_objname(var));
628 ui_out_field_string (uiout, "in_scope", "false");
631 ui_out_field_string (uiout, "in_scope", "invalid");
634 ui_out_field_string (uiout, "in_scope", "true");
635 ui_out_field_string (uiout, "new_type", varobj_get_type(var));
636 ui_out_field_int (uiout, "new_num_children",
637 varobj_get_num_children(var));
640 if (mi_version (uiout) > 1)
641 do_cleanups (cleanup);
648 if (mi_version (uiout) > 1)
649 cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
650 ui_out_field_string (uiout, "name", varobj_get_objname (*cc));
651 if (mi_print_value_p (varobj_get_gdb_type (*cc), print_values))
652 ui_out_field_string (uiout, "value", varobj_get_value (*cc));
653 ui_out_field_string (uiout, "in_scope", "true");
654 ui_out_field_string (uiout, "type_changed", "false");
655 if (mi_version (uiout) > 1)
656 do_cleanups (cleanup);