gdb/mi/mi-cmd-var.c

   1 /* MI Command Set - varobj commands.
   2    Copyright (C) 2000-2014 Free Software Foundation, Inc.
   3
   4    Contributed by Cygnus Solutions (a Red Hat company).
   5
   6    This file is part of GDB.
   7
   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.
  12
  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.
  17
  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/>.  */
  20
  21 #include "defs.h"
  22 #include "mi-cmds.h"
  23 #include "mi-main.h"
  24 #include "ui-out.h"
  25 #include "mi-out.h"
  26 #include "varobj.h"
  27 #include "language.h"
  28 #include "value.h"
  29 #include <ctype.h>
  30 #include <string.h>
  31 #include "mi-getopt.h"
  32 #include "gdbthread.h"
  33 #include "mi-parse.h"
  34
  35 extern unsigned int varobjdebug;                /* defined in varobj.c.  */
  36
  37 static void varobj_update_one (struct varobj *var,
  38                                enum print_values print_values,
  39                                int explicit);
  40
  41 static int mi_print_value_p (struct varobj *var,
  42                              enum print_values print_values);
  43
  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.  */
  47
  48 static void
  49 print_varobj (struct varobj *var, enum print_values print_values,
  50               int print_expression)
  51 {
  52   struct ui_out *uiout = current_uiout;
  53   char *type;
  54   int thread_id;
  55   char *display_hint;
  56
  57   ui_out_field_string (uiout, "name", varobj_get_objname (var));
  58   if (print_expression)
  59     ui_out_field_string (uiout, "exp", varobj_get_expression (var));
  60   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
  61
  62   if (mi_print_value_p (var, print_values))
  63     {
  64       char *val = varobj_get_value (var);
  65
  66       ui_out_field_string (uiout, "value", val);
  67       xfree (val);
  68     }
  69
  70   type = varobj_get_type (var);
  71   if (type != NULL)
  72     {
  73       ui_out_field_string (uiout, "type", type);
  74       xfree (type);
  75     }
  76
  77   thread_id = varobj_get_thread_id (var);
  78   if (thread_id > 0)
  79     ui_out_field_int (uiout, "thread-id", thread_id);
  80
  81   if (varobj_get_frozen (var))
  82     ui_out_field_int (uiout, "frozen", 1);
  83
  84   display_hint = varobj_get_display_hint (var);
  85   if (display_hint)
  86     {
  87       ui_out_field_string (uiout, "displayhint", display_hint);
  88       xfree (display_hint);
  89     }
  90
  91   if (varobj_pretty_printed_p (var))
  92     ui_out_field_int (uiout, "dynamic", 1);
  93 }
  94
  95 /* VAROBJ operations */
  96
  97 void
  98 mi_cmd_var_create (char *command, char **argv, int argc)
  99 {
 100   struct ui_out *uiout = current_uiout;
 101   CORE_ADDR frameaddr = 0;
 102   struct varobj *var;
 103   char *name;
 104   char *frame;
 105   char *expr;
 106   struct cleanup *old_cleanups;
 107   enum varobj_type var_type;
 108
 109   if (argc != 3)
 110     error (_("-var-create: Usage: NAME FRAME EXPRESSION."));
 111
 112   name = xstrdup (argv[0]);
 113   /* Add cleanup for name. Must be free_current_contents as name can
 114      be reallocated.  */
 115   old_cleanups = make_cleanup (free_current_contents, &name);
 116
 117   frame = xstrdup (argv[1]);
 118   make_cleanup (xfree, frame);
 119
 120   expr = xstrdup (argv[2]);
 121   make_cleanup (xfree, expr);
 122
 123   if (strcmp (name, "-") == 0)
 124     {
 125       xfree (name);
 126       name = varobj_gen_name ();
 127     }
 128   else if (!isalpha (*name))
 129     error (_("-var-create: name of object must begin with a letter"));
 130
 131   if (strcmp (frame, "*") == 0)
 132     var_type = USE_CURRENT_FRAME;
 133   else if (strcmp (frame, "@") == 0)
 134     var_type = USE_SELECTED_FRAME;
 135   else
 136     {
 137       var_type = USE_SPECIFIED_FRAME;
 138       frameaddr = string_to_core_addr (frame);
 139     }
 140
 141   if (varobjdebug)
 142     fprintf_unfiltered (gdb_stdlog,
 143                     "Name=\"%s\", Frame=\"%s\" (%s), Expression=\"%s\"\n",
 144                         name, frame, hex_string (frameaddr), expr);
 145
 146   var = varobj_create (name, expr, frameaddr, var_type);
 147
 148   if (var == NULL)
 149     error (_("-var-create: unable to create variable object"));
 150
 151   print_varobj (var, PRINT_ALL_VALUES, 0 /* don't print expression */);
 152
 153   ui_out_field_int (uiout, "has_more", varobj_has_more (var, 0));
 154
 155   do_cleanups (old_cleanups);
 156 }
 157
 158 void
 159 mi_cmd_var_delete (char *command, char **argv, int argc)
 160 {
 161   char *name;
 162   struct varobj *var;
 163   int numdel;
 164   int children_only_p = 0;
 165   struct cleanup *old_cleanups;
 166   struct ui_out *uiout = current_uiout;
 167
 168   if (argc < 1 || argc > 2)
 169     error (_("-var-delete: Usage: [-c] EXPRESSION."));
 170
 171   name = xstrdup (argv[0]);
 172   /* Add cleanup for name. Must be free_current_contents as name can
 173      be reallocated.  */
 174   old_cleanups = make_cleanup (free_current_contents, &name);
 175
 176   /* If we have one single argument it cannot be '-c' or any string
 177      starting with '-'.  */
 178   if (argc == 1)
 179     {
 180       if (strcmp (name, "-c") == 0)
 181         error (_("-var-delete: Missing required "
 182                  "argument after '-c': variable object name"));
 183       if (*name == '-')
 184         error (_("-var-delete: Illegal variable object name"));
 185     }
 186
 187   /* If we have 2 arguments they must be '-c' followed by a string
 188      which would be the variable name.  */
 189   if (argc == 2)
 190     {
 191       if (strcmp (name, "-c") != 0)
 192         error (_("-var-delete: Invalid option."));
 193       children_only_p = 1;
 194       do_cleanups (old_cleanups);
 195       name = xstrdup (argv[1]);
 196       old_cleanups = make_cleanup (free_current_contents, &name);
 197     }
 198
 199   /* If we didn't error out, now NAME contains the name of the
 200      variable.  */
 201
 202   var = varobj_get_handle (name);
 203
 204   numdel = varobj_delete (var, NULL, children_only_p);
 205
 206   ui_out_field_int (uiout, "ndeleted", numdel);
 207
 208   do_cleanups (old_cleanups);
 209 }
 210
 211 /* Parse a string argument into a format value.  */
 212
 213 static enum varobj_display_formats
 214 mi_parse_format (const char *arg)
 215 {
 216   if (arg != NULL)
 217     {
 218       int len;
 219
 220       len = strlen (arg);
 221
 222       if (strncmp (arg, "natural", len) == 0)
 223         return FORMAT_NATURAL;
 224       else if (strncmp (arg, "binary", len) == 0)
 225         return FORMAT_BINARY;
 226       else if (strncmp (arg, "decimal", len) == 0)
 227         return FORMAT_DECIMAL;
 228       else if (strncmp (arg, "hexadecimal", len) == 0)
 229         return FORMAT_HEXADECIMAL;
 230       else if (strncmp (arg, "octal", len) == 0)
 231         return FORMAT_OCTAL;
 232     }
 233
 234   error (_("Must specify the format as: \"natural\", "
 235            "\"binary\", \"decimal\", \"hexadecimal\", or \"octal\""));
 236 }
 237
 238 void
 239 mi_cmd_var_set_format (char *command, char **argv, int argc)
 240 {
 241   enum varobj_display_formats format;
 242   struct varobj *var;
 243   char *val;
 244   struct ui_out *uiout = current_uiout;
 245
 246   if (argc != 2)
 247     error (_("-var-set-format: Usage: NAME FORMAT."));
 248
 249   /* Get varobj handle, if a valid var obj name was specified.  */
 250   var = varobj_get_handle (argv[0]);
 251
 252   format = mi_parse_format (argv[1]);
 253
 254   /* Set the format of VAR to the given format.  */
 255   varobj_set_display_format (var, format);
 256
 257   /* Report the new current format.  */
 258   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 259
 260   /* Report the value in the new format.  */
 261   val = varobj_get_value (var);
 262   ui_out_field_string (uiout, "value", val);
 263   xfree (val);
 264 }
 265
 266 void
 267 mi_cmd_var_set_visualizer (char *command, char **argv, int argc)
 268 {
 269   struct varobj *var;
 270
 271   if (argc != 2)
 272     error (_("Usage: NAME VISUALIZER_FUNCTION."));
 273
 274   var = varobj_get_handle (argv[0]);
 275
 276   if (var == NULL)
 277     error (_("Variable object not found"));
 278
 279   varobj_set_visualizer (var, argv[1]);
 280 }
 281
 282 void
 283 mi_cmd_var_set_frozen (char *command, char **argv, int argc)
 284 {
 285   struct varobj *var;
 286   int frozen;
 287
 288   if (argc != 2)
 289     error (_("-var-set-format: Usage: NAME FROZEN_FLAG."));
 290
 291   var = varobj_get_handle (argv[0]);
 292
 293   if (strcmp (argv[1], "0") == 0)
 294     frozen = 0;
 295   else if (strcmp (argv[1], "1") == 0)
 296     frozen = 1;
 297   else
 298     error (_("Invalid flag value"));
 299
 300   varobj_set_frozen (var, frozen);
 301
 302   /* We don't automatically return the new value, or what varobjs got
 303      new values during unfreezing.  If this information is required,
 304      client should call -var-update explicitly.  */
 305 }
 306
 307 void
 308 mi_cmd_var_show_format (char *command, char **argv, int argc)
 309 {
 310   struct ui_out *uiout = current_uiout;
 311   enum varobj_display_formats format;
 312   struct varobj *var;
 313
 314   if (argc != 1)
 315     error (_("-var-show-format: Usage: NAME."));
 316
 317   /* Get varobj handle, if a valid var obj name was specified.  */
 318   var = varobj_get_handle (argv[0]);
 319
 320   format = varobj_get_display_format (var);
 321
 322   /* Report the current format.  */
 323   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 324 }
 325
 326 void
 327 mi_cmd_var_info_num_children (char *command, char **argv, int argc)
 328 {
 329   struct ui_out *uiout = current_uiout;
 330   struct varobj *var;
 331
 332   if (argc != 1)
 333     error (_("-var-info-num-children: Usage: NAME."));
 334
 335   /* Get varobj handle, if a valid var obj name was specified.  */
 336   var = varobj_get_handle (argv[0]);
 337
 338   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
 339 }
 340
 341 /* Return 1 if given the argument PRINT_VALUES we should display
 342    the varobj VAR.  */
 343
 344 static int
 345 mi_print_value_p (struct varobj *var, enum print_values print_values)
 346 {
 347   struct type *type;
 348
 349   if (print_values == PRINT_NO_VALUES)
 350     return 0;
 351
 352   if (print_values == PRINT_ALL_VALUES)
 353     return 1;
 354
 355   if (varobj_pretty_printed_p (var))
 356     return 1;
 357
 358   type = varobj_get_gdb_type (var);
 359   if (type == NULL)
 360     return 1;
 361   else
 362     {
 363       type = check_typedef (type);
 364
 365       /* For PRINT_SIMPLE_VALUES, only print the value if it has a type
 366          and that type is not a compound type.  */
 367       return (TYPE_CODE (type) != TYPE_CODE_ARRAY
 368               && TYPE_CODE (type) != TYPE_CODE_STRUCT
 369               && TYPE_CODE (type) != TYPE_CODE_UNION);
 370     }
 371 }
 372
 373 void
 374 mi_cmd_var_list_children (char *command, char **argv, int argc)
 375 {
 376   struct ui_out *uiout = current_uiout;
 377   struct varobj *var;
 378   VEC(varobj_p) *children;
 379   struct varobj *child;
 380   enum print_values print_values;
 381   int ix;
 382   int from, to;
 383   char *display_hint;
 384
 385   if (argc < 1 || argc > 4)
 386     error (_("-var-list-children: Usage: "
 387              "[PRINT_VALUES] NAME [FROM TO]"));
 388
 389   /* Get varobj handle, if a valid var obj name was specified.  */
 390   if (argc == 1 || argc == 3)
 391     var = varobj_get_handle (argv[0]);
 392   else
 393     var = varobj_get_handle (argv[1]);
 394
 395   if (argc > 2)
 396     {
 397       from = atoi (argv[argc - 2]);
 398       to = atoi (argv[argc - 1]);
 399     }
 400   else
 401     {
 402       from = -1;
 403       to = -1;
 404     }
 405
 406   children = varobj_list_children (var, &from, &to);
 407   ui_out_field_int (uiout, "numchild", to - from);
 408   if (argc == 2 || argc == 4)
 409     print_values = mi_parse_print_values (argv[0]);
 410   else
 411     print_values = PRINT_NO_VALUES;
 412
 413   display_hint = varobj_get_display_hint (var);
 414   if (display_hint)
 415     {
 416       ui_out_field_string (uiout, "displayhint", display_hint);
 417       xfree (display_hint);
 418     }
 419
 420   if (from < to)
 421     {
 422       struct cleanup *cleanup_children;
 423
 424       if (mi_version (uiout) == 1)
 425         cleanup_children
 426           = make_cleanup_ui_out_tuple_begin_end (uiout, "children");
 427       else
 428         cleanup_children
 429           = make_cleanup_ui_out_list_begin_end (uiout, "children");
 430       for (ix = from;
 431            ix < to && VEC_iterate (varobj_p, children, ix, child);
 432            ++ix)
 433         {
 434           struct cleanup *cleanup_child;
 435
 436           cleanup_child = make_cleanup_ui_out_tuple_begin_end (uiout, "child");
 437           print_varobj (child, print_values, 1 /* print expression */);
 438           do_cleanups (cleanup_child);
 439         }
 440       do_cleanups (cleanup_children);
 441     }
 442
 443   ui_out_field_int (uiout, "has_more", varobj_has_more (var, to));
 444 }
 445
 446 void
 447 mi_cmd_var_info_type (char *command, char **argv, int argc)
 448 {
 449   struct ui_out *uiout = current_uiout;
 450   struct varobj *var;
 451
 452   if (argc != 1)
 453     error (_("-var-info-type: Usage: NAME."));
 454
 455   /* Get varobj handle, if a valid var obj name was specified.  */
 456   var = varobj_get_handle (argv[0]);
 457
 458   ui_out_field_string (uiout, "type", varobj_get_type (var));
 459 }
 460
 461 void
 462 mi_cmd_var_info_path_expression (char *command, char **argv, int argc)
 463 {
 464   struct ui_out *uiout = current_uiout;
 465   struct varobj *var;
 466   char *path_expr;
 467
 468   if (argc != 1)
 469     error (_("Usage: NAME."));
 470
 471   /* Get varobj handle, if a valid var obj name was specified.  */
 472   var = varobj_get_handle (argv[0]);
 473
 474   path_expr = varobj_get_path_expr (var);
 475
 476   ui_out_field_string (uiout, "path_expr", path_expr);
 477 }
 478
 479 void
 480 mi_cmd_var_info_expression (char *command, char **argv, int argc)
 481 {
 482   struct ui_out *uiout = current_uiout;
 483   const struct language_defn *lang;
 484   struct varobj *var;
 485
 486   if (argc != 1)
 487     error (_("-var-info-expression: Usage: NAME."));
 488
 489   /* Get varobj handle, if a valid var obj name was specified.  */
 490   var = varobj_get_handle (argv[0]);
 491
 492   lang = varobj_get_language (var);
 493
 494   ui_out_field_string (uiout, "lang", lang->la_natural_name);
 495   ui_out_field_string (uiout, "exp", varobj_get_expression (var));
 496 }
 497
 498 void
 499 mi_cmd_var_show_attributes (char *command, char **argv, int argc)
 500 {
 501   struct ui_out *uiout = current_uiout;
 502   int attr;
 503   char *attstr;
 504   struct varobj *var;
 505
 506   if (argc != 1)
 507     error (_("-var-show-attributes: Usage: NAME."));
 508
 509   /* Get varobj handle, if a valid var obj name was specified */
 510   var = varobj_get_handle (argv[0]);
 511
 512   attr = varobj_get_attributes (var);
 513   /* FIXME: define masks for attributes */
 514   if (attr & 0x00000001)
 515     attstr = "editable";
 516   else
 517     attstr = "noneditable";
 518
 519   ui_out_field_string (uiout, "attr", attstr);
 520 }
 521
 522 void
 523 mi_cmd_var_evaluate_expression (char *command, char **argv, int argc)
 524 {
 525   struct ui_out *uiout = current_uiout;
 526   struct varobj *var;
 527
 528   enum varobj_display_formats format;
 529   int formatFound;
 530   int oind;
 531   char *oarg;
 532
 533   enum opt
 534   {
 535     OP_FORMAT
 536   };
 537   static const struct mi_opt opts[] =
 538     {
 539       {"f", OP_FORMAT, 1},
 540       { 0, 0, 0 }
 541     };
 542
 543   /* Parse arguments.  */
 544   format = FORMAT_NATURAL;
 545   formatFound = 0;
 546   oind = 0;
 547   while (1)
 548     {
 549       int opt = mi_getopt ("-var-evaluate-expression", argc, argv,
 550                            opts, &oind, &oarg);
 551
 552       if (opt < 0)
 553         break;
 554       switch ((enum opt) opt)
 555         {
 556         case OP_FORMAT:
 557           if (formatFound)
 558             error (_("Cannot specify format more than once"));
 559
 560           format = mi_parse_format (oarg);
 561           formatFound = 1;
 562           break;
 563         }
 564     }
 565
 566   if (oind >= argc)
 567     error (_("Usage: [-f FORMAT] NAME"));
 568
 569   if (oind < argc - 1)
 570     error (_("Garbage at end of command"));
 571
 572   /* Get varobj handle, if a valid var obj name was specified.  */
 573   var = varobj_get_handle (argv[oind]);
 574
 575   if (formatFound)
 576     {
 577       char *val = varobj_get_formatted_value (var, format);
 578
 579       ui_out_field_string (uiout, "value", val);
 580       xfree (val);
 581     }
 582   else
 583     {
 584       char *val = varobj_get_value (var);
 585
 586       ui_out_field_string (uiout, "value", val);
 587       xfree (val);
 588     }
 589 }
 590
 591 void
 592 mi_cmd_var_assign (char *command, char **argv, int argc)
 593 {
 594   struct ui_out *uiout = current_uiout;
 595   struct varobj *var;
 596   char *expression, *val;
 597   struct cleanup *cleanup;
 598
 599   if (argc != 2)
 600     error (_("-var-assign: Usage: NAME EXPRESSION."));
 601
 602   /* Get varobj handle, if a valid var obj name was specified.  */
 603   var = varobj_get_handle (argv[0]);
 604
 605   if (!varobj_editable_p (var))
 606     error (_("-var-assign: Variable object is not editable"));
 607
 608   expression = xstrdup (argv[1]);
 609
 610   /* MI command '-var-assign' may write memory, so suppress memory
 611      changed notification if it does.  */
 612   cleanup
 613     = make_cleanup_restore_integer (&mi_suppress_notification.memory);
 614   mi_suppress_notification.memory = 1;
 615
 616   if (!varobj_set_value (var, expression))
 617     error (_("-var-assign: Could not assign "
 618              "expression to variable object"));
 619
 620   val = varobj_get_value (var);
 621   ui_out_field_string (uiout, "value", val);
 622   xfree (val);
 623
 624   do_cleanups (cleanup);
 625 }
 626
 627 /* Type used for parameters passing to mi_cmd_var_update_iter.  */
 628
 629 struct mi_cmd_var_update
 630   {
 631     int only_floating;
 632     enum print_values print_values;
 633   };
 634
 635 /* Helper for mi_cmd_var_update - update each VAR.  */
 636
 637 static void
 638 mi_cmd_var_update_iter (struct varobj *var, void *data_pointer)
 639 {
 640   struct mi_cmd_var_update *data = data_pointer;
 641   int thread_id, thread_stopped;
 642
 643   thread_id = varobj_get_thread_id (var);
 644
 645   if (thread_id == -1 && is_stopped (inferior_ptid))
 646     thread_stopped = 1;
 647   else
 648     {
 649       struct thread_info *tp = find_thread_id (thread_id);
 650
 651       if (tp)
 652         thread_stopped = is_stopped (tp->ptid);
 653       else
 654         thread_stopped = 1;
 655     }
 656
 657   if (thread_stopped
 658       && (!data->only_floating || varobj_floating_p (var)))
 659     varobj_update_one (var, data->print_values, 0 /* implicit */);
 660 }
 661
 662 void
 663 mi_cmd_var_update (char *command, char **argv, int argc)
 664 {
 665   struct ui_out *uiout = current_uiout;
 666   struct cleanup *cleanup;
 667   char *name;
 668   enum print_values print_values;
 669
 670   if (argc != 1 && argc != 2)
 671     error (_("-var-update: Usage: [PRINT_VALUES] NAME."));
 672
 673   if (argc == 1)
 674     name = argv[0];
 675   else
 676     name = argv[1];
 677
 678   if (argc == 2)
 679     print_values = mi_parse_print_values (argv[0]);
 680   else
 681     print_values = PRINT_NO_VALUES;
 682
 683   if (mi_version (uiout) <= 1)
 684     cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
 685   else
 686     cleanup = make_cleanup_ui_out_list_begin_end (uiout, "changelist");
 687
 688   /* Check if the parameter is a "*", which means that we want to
 689      update all variables.  */
 690
 691   if ((*name == '*' || *name == '@') && (*(name + 1) == '\0'))
 692     {
 693       struct mi_cmd_var_update data;
 694
 695       data.only_floating = (*name == '@');
 696       data.print_values = print_values;
 697
 698       /* varobj_update_one automatically updates all the children of
 699          VAROBJ.  Therefore update each VAROBJ only once by iterating
 700          only the root VAROBJs.  */
 701
 702       all_root_varobjs (mi_cmd_var_update_iter, &data);
 703     }
 704   else
 705     {
 706       /* Get varobj handle, if a valid var obj name was specified.  */
 707       struct varobj *var = varobj_get_handle (name);
 708
 709       varobj_update_one (var, print_values, 1 /* explicit */);
 710     }
 711
 712   do_cleanups (cleanup);
 713 }
 714
 715 /* Helper for mi_cmd_var_update().  */
 716
 717 static void
 718 varobj_update_one (struct varobj *var, enum print_values print_values,
 719                    int explicit)
 720 {
 721   struct ui_out *uiout = current_uiout;
 722   VEC (varobj_update_result) *changes;
 723   varobj_update_result *r;
 724   int i;
 725
 726   changes = varobj_update (&var, explicit);
 727
 728   for (i = 0; VEC_iterate (varobj_update_result, changes, i, r); ++i)
 729     {
 730       char *display_hint;
 731       int from, to;
 732       struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
 733
 734       if (mi_version (uiout) > 1)
 735         make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 736       ui_out_field_string (uiout, "name", varobj_get_objname (r->varobj));
 737
 738       switch (r->status)
 739         {
 740         case VAROBJ_IN_SCOPE:
 741           if (mi_print_value_p (r->varobj, print_values))
 742             {
 743               char *val = varobj_get_value (r->varobj);
 744
 745               ui_out_field_string (uiout, "value", val);
 746               xfree (val);
 747             }
 748           ui_out_field_string (uiout, "in_scope", "true");
 749           break;
 750         case VAROBJ_NOT_IN_SCOPE:
 751           ui_out_field_string (uiout, "in_scope", "false");
 752           break;
 753         case VAROBJ_INVALID:
 754           ui_out_field_string (uiout, "in_scope", "invalid");
 755           break;
 756         }
 757
 758       if (r->status != VAROBJ_INVALID)
 759         {
 760           if (r->type_changed)
 761             ui_out_field_string (uiout, "type_changed", "true");
 762           else
 763             ui_out_field_string (uiout, "type_changed", "false");
 764         }
 765
 766       if (r->type_changed)
 767         ui_out_field_string (uiout, "new_type", varobj_get_type (r->varobj));
 768
 769       if (r->type_changed || r->children_changed)
 770         ui_out_field_int (uiout, "new_num_children",
 771                           varobj_get_num_children (r->varobj));
 772
 773       display_hint = varobj_get_display_hint (r->varobj);
 774       if (display_hint)
 775         {
 776           ui_out_field_string (uiout, "displayhint", display_hint);
 777           xfree (display_hint);
 778         }
 779
 780       if (varobj_pretty_printed_p (r->varobj))
 781         ui_out_field_int (uiout, "dynamic", 1);
 782
 783       varobj_get_child_range (r->varobj, &from, &to);
 784       ui_out_field_int (uiout, "has_more",
 785                         varobj_has_more (r->varobj, to));
 786
 787       if (r->new)
 788         {
 789           int j;
 790           varobj_p child;
 791           struct cleanup *cleanup;
 792
 793           cleanup = make_cleanup_ui_out_list_begin_end (uiout, "new_children");
 794           for (j = 0; VEC_iterate (varobj_p, r->new, j, child); ++j)
 795             {
 796               struct cleanup *cleanup_child;
 797
 798               cleanup_child
 799                 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 800               print_varobj (child, print_values, 1 /* print_expression */);
 801               do_cleanups (cleanup_child);
 802             }
 803
 804           do_cleanups (cleanup);
 805           VEC_free (varobj_p, r->new);
 806           r->new = NULL;        /* Paranoia.  */
 807         }
 808
 809       do_cleanups (cleanup);
 810     }
 811   VEC_free (varobj_update_result, changes);
 812 }
 813
 814 void
 815 mi_cmd_enable_pretty_printing (char *command, char **argv, int argc)
 816 {
 817   if (argc != 0)
 818     error (_("-enable-pretty-printing: no arguments allowed"));
 819
 820   varobj_enable_pretty_printing ();
 821 }
 822
 823 void
 824 mi_cmd_var_set_update_range (char *command, char **argv, int argc)
 825 {
 826   struct varobj *var;
 827   int from, to;
 828
 829   if (argc != 3)
 830     error (_("-var-set-update-range: Usage: VAROBJ FROM TO"));
 831
 832   var = varobj_get_handle (argv[0]);
 833   from = atoi (argv[1]);
 834   to = atoi (argv[2]);
 835
 836   varobj_set_child_range (var, from, to);
 837 }