1 /* MI Command Set - varobj commands.
2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions (a Red Hat company).
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "mi-getopt.h"
31 #include "gdbthread.h"
34 extern unsigned int varobjdebug; /* defined in varobj.c. */
36 static void varobj_update_one (struct varobj *var,
37 enum print_values print_values,
40 static int mi_print_value_p (struct varobj *var,
41 enum print_values print_values);
43 /* Print variable object VAR. The PRINT_VALUES parameter controls
44 if the value should be printed. The PRINT_EXPRESSION parameter
45 controls if the expression should be printed. */
48 print_varobj (struct varobj *var, enum print_values print_values,
51 struct ui_out *uiout = current_uiout;
54 uiout->field_string ("name", varobj_get_objname (var));
57 std::string exp = varobj_get_expression (var);
59 uiout->field_string ("exp", exp.c_str ());
61 uiout->field_int ("numchild", varobj_get_num_children (var));
63 if (mi_print_value_p (var, print_values))
65 std::string val = varobj_get_value (var);
67 uiout->field_string ("value", val.c_str ());
70 std::string type = varobj_get_type (var);
72 uiout->field_string ("type", type.c_str ());
74 thread_id = varobj_get_thread_id (var);
76 uiout->field_int ("thread-id", thread_id);
78 if (varobj_get_frozen (var))
79 uiout->field_int ("frozen", 1);
81 gdb::unique_xmalloc_ptr<char> display_hint = varobj_get_display_hint (var);
83 uiout->field_string ("displayhint", display_hint.get ());
85 if (varobj_is_dynamic_p (var))
86 uiout->field_int ("dynamic", 1);
89 /* VAROBJ operations */
92 mi_cmd_var_create (const char *command, char **argv, int argc)
94 struct ui_out *uiout = current_uiout;
95 CORE_ADDR frameaddr = 0;
100 struct cleanup *old_cleanups;
101 enum varobj_type var_type;
104 error (_("-var-create: Usage: NAME FRAME EXPRESSION."));
106 name = xstrdup (argv[0]);
107 /* Add cleanup for name. Must be free_current_contents as name can
109 old_cleanups = make_cleanup (free_current_contents, &name);
111 frame = xstrdup (argv[1]);
112 make_cleanup (xfree, frame);
114 expr = xstrdup (argv[2]);
115 make_cleanup (xfree, expr);
117 if (strcmp (name, "-") == 0)
120 name = varobj_gen_name ();
122 else if (!isalpha (*name))
123 error (_("-var-create: name of object must begin with a letter"));
125 if (strcmp (frame, "*") == 0)
126 var_type = USE_CURRENT_FRAME;
127 else if (strcmp (frame, "@") == 0)
128 var_type = USE_SELECTED_FRAME;
131 var_type = USE_SPECIFIED_FRAME;
132 frameaddr = string_to_core_addr (frame);
136 fprintf_unfiltered (gdb_stdlog,
137 "Name=\"%s\", Frame=\"%s\" (%s), Expression=\"%s\"\n",
138 name, frame, hex_string (frameaddr), expr);
140 var = varobj_create (name, expr, frameaddr, var_type);
143 error (_("-var-create: unable to create variable object"));
145 print_varobj (var, PRINT_ALL_VALUES, 0 /* don't print expression */);
147 uiout->field_int ("has_more", varobj_has_more (var, 0));
149 do_cleanups (old_cleanups);
153 mi_cmd_var_delete (const char *command, char **argv, int argc)
158 int children_only_p = 0;
159 struct cleanup *old_cleanups;
160 struct ui_out *uiout = current_uiout;
162 if (argc < 1 || argc > 2)
163 error (_("-var-delete: Usage: [-c] EXPRESSION."));
165 name = xstrdup (argv[0]);
166 /* Add cleanup for name. Must be free_current_contents as name can
168 old_cleanups = make_cleanup (free_current_contents, &name);
170 /* If we have one single argument it cannot be '-c' or any string
171 starting with '-'. */
174 if (strcmp (name, "-c") == 0)
175 error (_("-var-delete: Missing required "
176 "argument after '-c': variable object name"));
178 error (_("-var-delete: Illegal variable object name"));
181 /* If we have 2 arguments they must be '-c' followed by a string
182 which would be the variable name. */
185 if (strcmp (name, "-c") != 0)
186 error (_("-var-delete: Invalid option."));
188 do_cleanups (old_cleanups);
189 name = xstrdup (argv[1]);
190 old_cleanups = make_cleanup (free_current_contents, &name);
193 /* If we didn't error out, now NAME contains the name of the
196 var = varobj_get_handle (name);
198 numdel = varobj_delete (var, children_only_p);
200 uiout->field_int ("ndeleted", numdel);
202 do_cleanups (old_cleanups);
205 /* Parse a string argument into a format value. */
207 static enum varobj_display_formats
208 mi_parse_format (const char *arg)
216 if (strncmp (arg, "natural", len) == 0)
217 return FORMAT_NATURAL;
218 else if (strncmp (arg, "binary", len) == 0)
219 return FORMAT_BINARY;
220 else if (strncmp (arg, "decimal", len) == 0)
221 return FORMAT_DECIMAL;
222 else if (strncmp (arg, "hexadecimal", len) == 0)
223 return FORMAT_HEXADECIMAL;
224 else if (strncmp (arg, "octal", len) == 0)
226 else if (strncmp (arg, "zero-hexadecimal", len) == 0)
227 return FORMAT_ZHEXADECIMAL;
230 error (_("Must specify the format as: \"natural\", "
231 "\"binary\", \"decimal\", \"hexadecimal\", \"octal\" or \"zero-hexadecimal\""));
235 mi_cmd_var_set_format (const char *command, char **argv, int argc)
237 enum varobj_display_formats format;
239 struct ui_out *uiout = current_uiout;
242 error (_("-var-set-format: Usage: NAME FORMAT."));
244 /* Get varobj handle, if a valid var obj name was specified. */
245 var = varobj_get_handle (argv[0]);
247 format = mi_parse_format (argv[1]);
249 /* Set the format of VAR to the given format. */
250 varobj_set_display_format (var, format);
252 /* Report the new current format. */
253 uiout->field_string ("format", varobj_format_string[(int) format]);
255 /* Report the value in the new format. */
256 std::string val = varobj_get_value (var);
257 uiout->field_string ("value", val.c_str ());
261 mi_cmd_var_set_visualizer (const char *command, char **argv, int argc)
266 error (_("Usage: NAME VISUALIZER_FUNCTION."));
268 var = varobj_get_handle (argv[0]);
271 error (_("Variable object not found"));
273 varobj_set_visualizer (var, argv[1]);
277 mi_cmd_var_set_frozen (const char *command, char **argv, int argc)
283 error (_("-var-set-format: Usage: NAME FROZEN_FLAG."));
285 var = varobj_get_handle (argv[0]);
287 if (strcmp (argv[1], "0") == 0)
289 else if (strcmp (argv[1], "1") == 0)
292 error (_("Invalid flag value"));
294 varobj_set_frozen (var, frozen);
296 /* We don't automatically return the new value, or what varobjs got
297 new values during unfreezing. If this information is required,
298 client should call -var-update explicitly. */
302 mi_cmd_var_show_format (const char *command, char **argv, int argc)
304 struct ui_out *uiout = current_uiout;
305 enum varobj_display_formats format;
309 error (_("-var-show-format: Usage: NAME."));
311 /* Get varobj handle, if a valid var obj name was specified. */
312 var = varobj_get_handle (argv[0]);
314 format = varobj_get_display_format (var);
316 /* Report the current format. */
317 uiout->field_string ("format", varobj_format_string[(int) format]);
321 mi_cmd_var_info_num_children (const char *command, char **argv, int argc)
323 struct ui_out *uiout = current_uiout;
327 error (_("-var-info-num-children: Usage: NAME."));
329 /* Get varobj handle, if a valid var obj name was specified. */
330 var = varobj_get_handle (argv[0]);
332 uiout->field_int ("numchild", varobj_get_num_children (var));
335 /* Return 1 if given the argument PRINT_VALUES we should display
339 mi_print_value_p (struct varobj *var, enum print_values print_values)
343 if (print_values == PRINT_NO_VALUES)
346 if (print_values == PRINT_ALL_VALUES)
349 if (varobj_is_dynamic_p (var))
352 type = varobj_get_gdb_type (var);
357 type = check_typedef (type);
359 /* For PRINT_SIMPLE_VALUES, only print the value if it has a type
360 and that type is not a compound type. */
361 return (TYPE_CODE (type) != TYPE_CODE_ARRAY
362 && TYPE_CODE (type) != TYPE_CODE_STRUCT
363 && TYPE_CODE (type) != TYPE_CODE_UNION);
368 mi_cmd_var_list_children (const char *command, char **argv, int argc)
370 struct ui_out *uiout = current_uiout;
372 VEC(varobj_p) *children;
373 struct varobj *child;
374 enum print_values print_values;
378 if (argc < 1 || argc > 4)
379 error (_("-var-list-children: Usage: "
380 "[PRINT_VALUES] NAME [FROM TO]"));
382 /* Get varobj handle, if a valid var obj name was specified. */
383 if (argc == 1 || argc == 3)
384 var = varobj_get_handle (argv[0]);
386 var = varobj_get_handle (argv[1]);
390 from = atoi (argv[argc - 2]);
391 to = atoi (argv[argc - 1]);
399 children = varobj_list_children (var, &from, &to);
400 uiout->field_int ("numchild", to - from);
401 if (argc == 2 || argc == 4)
402 print_values = mi_parse_print_values (argv[0]);
404 print_values = PRINT_NO_VALUES;
406 gdb::unique_xmalloc_ptr<char> display_hint = varobj_get_display_hint (var);
408 uiout->field_string ("displayhint", display_hint.get ());
412 struct cleanup *cleanup_children;
414 if (mi_version (uiout) == 1)
416 = make_cleanup_ui_out_tuple_begin_end (uiout, "children");
419 = make_cleanup_ui_out_list_begin_end (uiout, "children");
421 ix < to && VEC_iterate (varobj_p, children, ix, child);
424 ui_out_emit_tuple child_emitter (uiout, "child");
426 print_varobj (child, print_values, 1 /* print expression */);
428 do_cleanups (cleanup_children);
431 uiout->field_int ("has_more", varobj_has_more (var, to));
435 mi_cmd_var_info_type (const char *command, char **argv, int argc)
437 struct ui_out *uiout = current_uiout;
441 error (_("-var-info-type: Usage: NAME."));
443 /* Get varobj handle, if a valid var obj name was specified. */
444 var = varobj_get_handle (argv[0]);
446 std::string type_name = varobj_get_type (var);
447 uiout->field_string ("type", type_name.c_str ());
451 mi_cmd_var_info_path_expression (const char *command, char **argv, int argc)
453 struct ui_out *uiout = current_uiout;
457 error (_("Usage: NAME."));
459 /* Get varobj handle, if a valid var obj name was specified. */
460 var = varobj_get_handle (argv[0]);
462 const char *path_expr = varobj_get_path_expr (var);
464 uiout->field_string ("path_expr", path_expr);
468 mi_cmd_var_info_expression (const char *command, char **argv, int argc)
470 struct ui_out *uiout = current_uiout;
471 const struct language_defn *lang;
475 error (_("-var-info-expression: Usage: NAME."));
477 /* Get varobj handle, if a valid var obj name was specified. */
478 var = varobj_get_handle (argv[0]);
480 lang = varobj_get_language (var);
482 uiout->field_string ("lang", lang->la_natural_name);
484 std::string exp = varobj_get_expression (var);
485 uiout->field_string ("exp", exp.c_str ());
489 mi_cmd_var_show_attributes (const char *command, char **argv, int argc)
491 struct ui_out *uiout = current_uiout;
497 error (_("-var-show-attributes: Usage: NAME."));
499 /* Get varobj handle, if a valid var obj name was specified */
500 var = varobj_get_handle (argv[0]);
502 attr = varobj_get_attributes (var);
503 /* FIXME: define masks for attributes */
504 if (attr & 0x00000001)
507 attstr = "noneditable";
509 uiout->field_string ("attr", attstr);
513 mi_cmd_var_evaluate_expression (const char *command, char **argv, int argc)
515 struct ui_out *uiout = current_uiout;
518 enum varobj_display_formats format;
527 static const struct mi_opt opts[] =
533 /* Parse arguments. */
534 format = FORMAT_NATURAL;
539 int opt = mi_getopt ("-var-evaluate-expression", argc, argv,
544 switch ((enum opt) opt)
548 error (_("Cannot specify format more than once"));
550 format = mi_parse_format (oarg);
557 error (_("Usage: [-f FORMAT] NAME"));
560 error (_("Garbage at end of command"));
562 /* Get varobj handle, if a valid var obj name was specified. */
563 var = varobj_get_handle (argv[oind]);
567 std::string val = varobj_get_formatted_value (var, format);
569 uiout->field_string ("value", val.c_str ());
573 std::string val = varobj_get_value (var);
575 uiout->field_string ("value", val.c_str ());
580 mi_cmd_var_assign (const char *command, char **argv, int argc)
582 struct ui_out *uiout = current_uiout;
586 error (_("-var-assign: Usage: NAME EXPRESSION."));
588 /* Get varobj handle, if a valid var obj name was specified. */
589 var = varobj_get_handle (argv[0]);
591 if (!varobj_editable_p (var))
592 error (_("-var-assign: Variable object is not editable"));
594 const char *expression = argv[1];
596 /* MI command '-var-assign' may write memory, so suppress memory
597 changed notification if it does. */
598 scoped_restore save_suppress
599 = make_scoped_restore (&mi_suppress_notification.memory, 1);
601 if (!varobj_set_value (var, expression))
602 error (_("-var-assign: Could not assign "
603 "expression to variable object"));
605 std::string val = varobj_get_value (var);
606 uiout->field_string ("value", val.c_str ());
609 /* Type used for parameters passing to mi_cmd_var_update_iter. */
611 struct mi_cmd_var_update
614 enum print_values print_values;
617 /* Helper for mi_cmd_var_update - update each VAR. */
620 mi_cmd_var_update_iter (struct varobj *var, void *data_pointer)
622 struct mi_cmd_var_update *data = (struct mi_cmd_var_update *) data_pointer;
623 int thread_id, thread_stopped;
625 thread_id = varobj_get_thread_id (var);
628 && (ptid_equal (inferior_ptid, null_ptid)
629 || is_stopped (inferior_ptid)))
633 struct thread_info *tp = find_thread_global_id (thread_id);
636 thread_stopped = is_stopped (tp->ptid);
642 && (!data->only_floating || varobj_floating_p (var)))
643 varobj_update_one (var, data->print_values, 0 /* implicit */);
647 mi_cmd_var_update (const char *command, char **argv, int argc)
649 struct ui_out *uiout = current_uiout;
650 struct cleanup *cleanup;
652 enum print_values print_values;
654 if (argc != 1 && argc != 2)
655 error (_("-var-update: Usage: [PRINT_VALUES] NAME."));
663 print_values = mi_parse_print_values (argv[0]);
665 print_values = PRINT_NO_VALUES;
667 if (mi_version (uiout) <= 1)
668 cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
670 cleanup = make_cleanup_ui_out_list_begin_end (uiout, "changelist");
672 /* Check if the parameter is a "*", which means that we want to
673 update all variables. */
675 if ((*name == '*' || *name == '@') && (*(name + 1) == '\0'))
677 struct mi_cmd_var_update data;
679 data.only_floating = (*name == '@');
680 data.print_values = print_values;
682 /* varobj_update_one automatically updates all the children of
683 VAROBJ. Therefore update each VAROBJ only once by iterating
684 only the root VAROBJs. */
686 all_root_varobjs (mi_cmd_var_update_iter, &data);
690 /* Get varobj handle, if a valid var obj name was specified. */
691 struct varobj *var = varobj_get_handle (name);
693 varobj_update_one (var, print_values, 1 /* explicit */);
696 do_cleanups (cleanup);
699 /* Helper for mi_cmd_var_update(). */
702 varobj_update_one (struct varobj *var, enum print_values print_values,
705 struct ui_out *uiout = current_uiout;
706 VEC (varobj_update_result) *changes;
707 varobj_update_result *r;
710 changes = varobj_update (&var, is_explicit);
712 for (i = 0; VEC_iterate (varobj_update_result, changes, i, r); ++i)
715 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
717 if (mi_version (uiout) > 1)
718 make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
719 uiout->field_string ("name", varobj_get_objname (r->varobj));
723 case VAROBJ_IN_SCOPE:
724 if (mi_print_value_p (r->varobj, print_values))
726 std::string val = varobj_get_value (r->varobj);
728 uiout->field_string ("value", val.c_str ());
730 uiout->field_string ("in_scope", "true");
732 case VAROBJ_NOT_IN_SCOPE:
733 uiout->field_string ("in_scope", "false");
736 uiout->field_string ("in_scope", "invalid");
740 if (r->status != VAROBJ_INVALID)
743 uiout->field_string ("type_changed", "true");
745 uiout->field_string ("type_changed", "false");
750 std::string type_name = varobj_get_type (r->varobj);
752 uiout->field_string ("new_type", type_name.c_str ());
755 if (r->type_changed || r->children_changed)
756 uiout->field_int ("new_num_children",
757 varobj_get_num_children (r->varobj));
759 gdb::unique_xmalloc_ptr<char> display_hint
760 = varobj_get_display_hint (r->varobj);
762 uiout->field_string ("displayhint", display_hint.get ());
764 if (varobj_is_dynamic_p (r->varobj))
765 uiout->field_int ("dynamic", 1);
767 varobj_get_child_range (r->varobj, &from, &to);
768 uiout->field_int ("has_more", varobj_has_more (r->varobj, to));
774 struct cleanup *cleanup;
776 cleanup = make_cleanup_ui_out_list_begin_end (uiout, "new_children");
777 for (j = 0; VEC_iterate (varobj_p, r->newobj, j, child); ++j)
779 ui_out_emit_tuple tuple_emitter (uiout, NULL);
780 print_varobj (child, print_values, 1 /* print_expression */);
783 do_cleanups (cleanup);
784 VEC_free (varobj_p, r->newobj);
785 r->newobj = NULL; /* Paranoia. */
788 do_cleanups (cleanup);
790 VEC_free (varobj_update_result, changes);
794 mi_cmd_enable_pretty_printing (const char *command, char **argv, int argc)
797 error (_("-enable-pretty-printing: no arguments allowed"));
799 varobj_enable_pretty_printing ();
803 mi_cmd_var_set_update_range (const char *command, char **argv, int argc)
809 error (_("-var-set-update-range: Usage: VAROBJ FROM TO"));
811 var = varobj_get_handle (argv[0]);
812 from = atoi (argv[1]);
815 varobj_set_child_range (var, from, to);