gdb/mi/mi-cmd-var.c

   1 /* MI Command Set - varobj commands.
   2    Copyright (C) 2000-2013 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 "value.h"
  28 #include <ctype.h>
  29 #include "gdb_string.h"
  30 #include "mi-getopt.h"
  31 #include "gdbthread.h"
  32 #include "mi-parse.h"
  33
  34 extern unsigned int varobjdebug;                /* defined in varobj.c.  */
  35
  36 static void varobj_update_one (struct varobj *var,
  37                                enum print_values print_values,
  38                                int explicit);
  39
  40 static int mi_print_value_p (struct varobj *var,
  41                              enum print_values print_values);
  42
  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.  */
  46
  47 static void
  48 print_varobj (struct varobj *var, enum print_values print_values,
  49               int print_expression)
  50 {
  51   struct ui_out *uiout = current_uiout;
  52   char *type;
  53   int thread_id;
  54   char *display_hint;
  55
  56   ui_out_field_string (uiout, "name", varobj_get_objname (var));
  57   if (print_expression)
  58     ui_out_field_string (uiout, "exp", varobj_get_expression (var));
  59   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
  60
  61   if (mi_print_value_p (var, print_values))
  62     {
  63       char *val = varobj_get_value (var);
  64
  65       ui_out_field_string (uiout, "value", val);
  66       xfree (val);
  67     }
  68
  69   type = varobj_get_type (var);
  70   if (type != NULL)
  71     {
  72       ui_out_field_string (uiout, "type", type);
  73       xfree (type);
  74     }
  75
  76   thread_id = varobj_get_thread_id (var);
  77   if (thread_id > 0)
  78     ui_out_field_int (uiout, "thread-id", thread_id);
  79
  80   if (varobj_get_frozen (var))
  81     ui_out_field_int (uiout, "frozen", 1);
  82
  83   display_hint = varobj_get_display_hint (var);
  84   if (display_hint)
  85     {
  86       ui_out_field_string (uiout, "displayhint", display_hint);
  87       xfree (display_hint);
  88     }
  89
  90   if (varobj_pretty_printed_p (var))
  91     ui_out_field_int (uiout, "dynamic", 1);
  92 }
  93
  94 /* VAROBJ operations */
  95
  96 void
  97 mi_cmd_var_create (char *command, char **argv, int argc)
  98 {
  99   struct ui_out *uiout = current_uiout;
 100   CORE_ADDR frameaddr = 0;
 101   struct varobj *var;
 102   char *name;
 103   char *frame;
 104   char *expr;
 105   struct cleanup *old_cleanups;
 106   enum varobj_type var_type;
 107
 108   if (argc != 3)
 109     error (_("-var-create: Usage: NAME FRAME EXPRESSION."));
 110
 111   name = xstrdup (argv[0]);
 112   /* Add cleanup for name. Must be free_current_contents as name can
 113      be reallocated.  */
 114   old_cleanups = make_cleanup (free_current_contents, &name);
 115
 116   frame = xstrdup (argv[1]);
 117   make_cleanup (xfree, frame);
 118
 119   expr = xstrdup (argv[2]);
 120   make_cleanup (xfree, expr);
 121
 122   if (strcmp (name, "-") == 0)
 123     {
 124       xfree (name);
 125       name = varobj_gen_name ();
 126     }
 127   else if (!isalpha (*name))
 128     error (_("-var-create: name of object must begin with a letter"));
 129
 130   if (strcmp (frame, "*") == 0)
 131     var_type = USE_CURRENT_FRAME;
 132   else if (strcmp (frame, "@") == 0)
 133     var_type = USE_SELECTED_FRAME;
 134   else
 135     {
 136       var_type = USE_SPECIFIED_FRAME;
 137       frameaddr = string_to_core_addr (frame);
 138     }
 139
 140   if (varobjdebug)
 141     fprintf_unfiltered (gdb_stdlog,
 142                     "Name=\"%s\", Frame=\"%s\" (%s), Expression=\"%s\"\n",
 143                         name, frame, hex_string (frameaddr), expr);
 144
 145   var = varobj_create (name, expr, frameaddr, var_type);
 146
 147   if (var == NULL)
 148     error (_("-var-create: unable to create variable object"));
 149
 150   print_varobj (var, PRINT_ALL_VALUES, 0 /* don't print expression */);
 151
 152   ui_out_field_int (uiout, "has_more", varobj_has_more (var, 0));
 153
 154   do_cleanups (old_cleanups);
 155 }
 156
 157 void
 158 mi_cmd_var_delete (char *command, char **argv, int argc)
 159 {
 160   char *name;
 161   struct varobj *var;
 162   int numdel;
 163   int children_only_p = 0;
 164   struct cleanup *old_cleanups;
 165   struct ui_out *uiout = current_uiout;
 166
 167   if (argc < 1 || argc > 2)
 168     error (_("-var-delete: Usage: [-c] EXPRESSION."));
 169
 170   name = xstrdup (argv[0]);
 171   /* Add cleanup for name. Must be free_current_contents as name can
 172      be reallocated.  */
 173   old_cleanups = make_cleanup (free_current_contents, &name);
 174
 175   /* If we have one single argument it cannot be '-c' or any string
 176      starting with '-'.  */
 177   if (argc == 1)
 178     {
 179       if (strcmp (name, "-c") == 0)
 180         error (_("-var-delete: Missing required "
 181                  "argument after '-c': variable object name"));
 182       if (*name == '-')
 183         error (_("-var-delete: Illegal variable object name"));
 184     }
 185
 186   /* If we have 2 arguments they must be '-c' followed by a string
 187      which would be the variable name.  */
 188   if (argc == 2)
 189     {
 190       if (strcmp (name, "-c") != 0)
 191         error (_("-var-delete: Invalid option."));
 192       children_only_p = 1;
 193       do_cleanups (old_cleanups);
 194       name = xstrdup (argv[1]);
 195       old_cleanups = make_cleanup (free_current_contents, &name);
 196     }
 197
 198   /* If we didn't error out, now NAME contains the name of the
 199      variable.  */
 200
 201   var = varobj_get_handle (name);
 202
 203   numdel = varobj_delete (var, NULL, children_only_p);
 204
 205   ui_out_field_int (uiout, "ndeleted", numdel);
 206
 207   do_cleanups (old_cleanups);
 208 }
 209
 210 /* Parse a string argument into a format value.  */
 211
 212 static enum varobj_display_formats
 213 mi_parse_format (const char *arg)
 214 {
 215   if (arg != NULL)
 216     {
 217       int len;
 218
 219       len = strlen (arg);
 220
 221       if (strncmp (arg, "natural", len) == 0)
 222         return FORMAT_NATURAL;
 223       else if (strncmp (arg, "binary", len) == 0)
 224         return FORMAT_BINARY;
 225       else if (strncmp (arg, "decimal", len) == 0)
 226         return FORMAT_DECIMAL;
 227       else if (strncmp (arg, "hexadecimal", len) == 0)
 228         return FORMAT_HEXADECIMAL;
 229       else if (strncmp (arg, "octal", len) == 0)
 230         return FORMAT_OCTAL;
 231     }
 232
 233   error (_("Must specify the format as: \"natural\", "
 234            "\"binary\", \"decimal\", \"hexadecimal\", or \"octal\""));
 235 }
 236
 237 void
 238 mi_cmd_var_set_format (char *command, char **argv, int argc)
 239 {
 240   enum varobj_display_formats format;
 241   struct varobj *var;
 242   char *val;
 243   struct ui_out *uiout = current_uiout;
 244
 245   if (argc != 2)
 246     error (_("-var-set-format: Usage: NAME FORMAT."));
 247
 248   /* Get varobj handle, if a valid var obj name was specified.  */
 249   var = varobj_get_handle (argv[0]);
 250
 251   format = mi_parse_format (argv[1]);
 252
 253   /* Set the format of VAR to the given format.  */
 254   varobj_set_display_format (var, format);
 255
 256   /* Report the new current format.  */
 257   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 258
 259   /* Report the value in the new format.  */
 260   val = varobj_get_value (var);
 261   ui_out_field_string (uiout, "value", val);
 262   xfree (val);
 263 }
 264
 265 void
 266 mi_cmd_var_set_visualizer (char *command, char **argv, int argc)
 267 {
 268   struct varobj *var;
 269
 270   if (argc != 2)
 271     error (_("Usage: NAME VISUALIZER_FUNCTION."));
 272
 273   var = varobj_get_handle (argv[0]);
 274
 275   if (var == NULL)
 276     error (_("Variable object not found"));
 277
 278   varobj_set_visualizer (var, argv[1]);
 279 }
 280
 281 void
 282 mi_cmd_var_set_frozen (char *command, char **argv, int argc)
 283 {
 284   struct varobj *var;
 285   int frozen;
 286
 287   if (argc != 2)
 288     error (_("-var-set-format: Usage: NAME FROZEN_FLAG."));
 289
 290   var = varobj_get_handle (argv[0]);
 291
 292   if (strcmp (argv[1], "0") == 0)
 293     frozen = 0;
 294   else if (strcmp (argv[1], "1") == 0)
 295     frozen = 1;
 296   else
 297     error (_("Invalid flag value"));
 298
 299   varobj_set_frozen (var, frozen);
 300
 301   /* We don't automatically return the new value, or what varobjs got
 302      new values during unfreezing.  If this information is required,
 303      client should call -var-update explicitly.  */
 304 }
 305
 306 void
 307 mi_cmd_var_show_format (char *command, char **argv, int argc)
 308 {
 309   struct ui_out *uiout = current_uiout;
 310   enum varobj_display_formats format;
 311   struct varobj *var;
 312
 313   if (argc != 1)
 314     error (_("-var-show-format: Usage: NAME."));
 315
 316   /* Get varobj handle, if a valid var obj name was specified.  */
 317   var = varobj_get_handle (argv[0]);
 318
 319   format = varobj_get_display_format (var);
 320
 321   /* Report the current format.  */
 322   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 323 }
 324
 325 void
 326 mi_cmd_var_info_num_children (char *command, char **argv, int argc)
 327 {
 328   struct ui_out *uiout = current_uiout;
 329   struct varobj *var;
 330
 331   if (argc != 1)
 332     error (_("-var-info-num-children: Usage: NAME."));
 333
 334   /* Get varobj handle, if a valid var obj name was specified.  */
 335   var = varobj_get_handle (argv[0]);
 336
 337   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
 338 }
 339
 340 /* Return 1 if given the argument PRINT_VALUES we should display
 341    the varobj VAR.  */
 342
 343 static int
 344 mi_print_value_p (struct varobj *var, enum print_values print_values)
 345 {
 346   struct type *type;
 347
 348   if (print_values == PRINT_NO_VALUES)
 349     return 0;
 350
 351   if (print_values == PRINT_ALL_VALUES)
 352     return 1;
 353
 354   if (varobj_pretty_printed_p (var))
 355     return 1;
 356
 357   type = varobj_get_gdb_type (var);
 358   if (type == NULL)
 359     return 1;
 360   else
 361     {
 362       type = check_typedef (type);
 363
 364       /* For PRINT_SIMPLE_VALUES, only print the value if it has a type
 365          and that type is not a compound type.  */
 366       return (TYPE_CODE (type) != TYPE_CODE_ARRAY
 367               && TYPE_CODE (type) != TYPE_CODE_STRUCT
 368               && TYPE_CODE (type) != TYPE_CODE_UNION);
 369     }
 370 }
 371
 372 void
 373 mi_cmd_var_list_children (char *command, char **argv, int argc)
 374 {
 375   struct ui_out *uiout = current_uiout;
 376   struct varobj *var;
 377   VEC(varobj_p) *children;
 378   struct varobj *child;
 379   enum print_values print_values;
 380   int ix;
 381   int from, to;
 382   char *display_hint;
 383
 384   if (argc < 1 || argc > 4)
 385     error (_("-var-list-children: Usage: "
 386              "[PRINT_VALUES] NAME [FROM TO]"));
 387
 388   /* Get varobj handle, if a valid var obj name was specified.  */
 389   if (argc == 1 || argc == 3)
 390     var = varobj_get_handle (argv[0]);
 391   else
 392     var = varobj_get_handle (argv[1]);
 393
 394   if (argc > 2)
 395     {
 396       from = atoi (argv[argc - 2]);
 397       to = atoi (argv[argc - 1]);
 398     }
 399   else
 400     {
 401       from = -1;
 402       to = -1;
 403     }
 404
 405   children = varobj_list_children (var, &from, &to);
 406   ui_out_field_int (uiout, "numchild", to - from);
 407   if (argc == 2 || argc == 4)
 408     print_values = mi_parse_print_values (argv[0]);
 409   else
 410     print_values = PRINT_NO_VALUES;
 411
 412   display_hint = varobj_get_display_hint (var);
 413   if (display_hint)
 414     {
 415       ui_out_field_string (uiout, "displayhint", display_hint);
 416       xfree (display_hint);
 417     }
 418
 419   if (from < to)
 420     {
 421       struct cleanup *cleanup_children;
 422
 423       if (mi_version (uiout) == 1)
 424         cleanup_children
 425           = make_cleanup_ui_out_tuple_begin_end (uiout, "children");
 426       else
 427         cleanup_children
 428           = make_cleanup_ui_out_list_begin_end (uiout, "children");
 429       for (ix = from;
 430            ix < to && VEC_iterate (varobj_p, children, ix, child);
 431            ++ix)
 432         {
 433           struct cleanup *cleanup_child;
 434
 435           cleanup_child = make_cleanup_ui_out_tuple_begin_end (uiout, "child");
 436           print_varobj (child, print_values, 1 /* print expression */);
 437           do_cleanups (cleanup_child);
 438         }
 439       do_cleanups (cleanup_children);
 440     }
 441
 442   ui_out_field_int (uiout, "has_more", varobj_has_more (var, to));
 443 }
 444
 445 void
 446 mi_cmd_var_info_type (char *command, char **argv, int argc)
 447 {
 448   struct ui_out *uiout = current_uiout;
 449   struct varobj *var;
 450
 451   if (argc != 1)
 452     error (_("-var-info-type: Usage: NAME."));
 453
 454   /* Get varobj handle, if a valid var obj name was specified.  */
 455   var = varobj_get_handle (argv[0]);
 456
 457   ui_out_field_string (uiout, "type", varobj_get_type (var));
 458 }
 459
 460 void
 461 mi_cmd_var_info_path_expression (char *command, char **argv, int argc)
 462 {
 463   struct ui_out *uiout = current_uiout;
 464   struct varobj *var;
 465   char *path_expr;
 466
 467   if (argc != 1)
 468     error (_("Usage: NAME."));
 469
 470   /* Get varobj handle, if a valid var obj name was specified.  */
 471   var = varobj_get_handle (argv[0]);
 472
 473   path_expr = varobj_get_path_expr (var);
 474
 475   ui_out_field_string (uiout, "path_expr", path_expr);
 476 }
 477
 478 void
 479 mi_cmd_var_info_expression (char *command, char **argv, int argc)
 480 {
 481   struct ui_out *uiout = current_uiout;
 482   enum varobj_languages lang;
 483   struct varobj *var;
 484
 485   if (argc != 1)
 486     error (_("-var-info-expression: Usage: NAME."));
 487
 488   /* Get varobj handle, if a valid var obj name was specified.  */
 489   var = varobj_get_handle (argv[0]);
 490
 491   lang = varobj_get_language (var);
 492
 493   ui_out_field_string (uiout, "lang", varobj_language_string[(int) lang]);
 494   ui_out_field_string (uiout, "exp", varobj_get_expression (var));
 495 }
 496
 497 void
 498 mi_cmd_var_show_attributes (char *command, char **argv, int argc)
 499 {
 500   struct ui_out *uiout = current_uiout;
 501   int attr;
 502   char *attstr;
 503   struct varobj *var;
 504
 505   if (argc != 1)
 506     error (_("-var-show-attributes: Usage: NAME."));
 507
 508   /* Get varobj handle, if a valid var obj name was specified */
 509   var = varobj_get_handle (argv[0]);
 510
 511   attr = varobj_get_attributes (var);
 512   /* FIXME: define masks for attributes */
 513   if (attr & 0x00000001)
 514     attstr = "editable";
 515   else
 516     attstr = "noneditable";
 517
 518   ui_out_field_string (uiout, "attr", attstr);
 519 }
 520
 521 void
 522 mi_cmd_var_evaluate_expression (char *command, char **argv, int argc)
 523 {
 524   struct ui_out *uiout = current_uiout;
 525   struct varobj *var;
 526
 527   enum varobj_display_formats format;
 528   int formatFound;
 529   int oind;
 530   char *oarg;
 531
 532   enum opt
 533   {
 534     OP_FORMAT
 535   };
 536   static const struct mi_opt opts[] =
 537     {
 538       {"f", OP_FORMAT, 1},
 539       { 0, 0, 0 }
 540     };
 541
 542   /* Parse arguments.  */
 543   format = FORMAT_NATURAL;
 544   formatFound = 0;
 545   oind = 0;
 546   while (1)
 547     {
 548       int opt = mi_getopt ("-var-evaluate-expression", argc, argv,
 549                            opts, &oind, &oarg);
 550
 551       if (opt < 0)
 552         break;
 553       switch ((enum opt) opt)
 554         {
 555         case OP_FORMAT:
 556           if (formatFound)
 557             error (_("Cannot specify format more than once"));
 558
 559           format = mi_parse_format (oarg);
 560           formatFound = 1;
 561           break;
 562         }
 563     }
 564
 565   if (oind >= argc)
 566     error (_("Usage: [-f FORMAT] NAME"));
 567
 568   if (oind < argc - 1)
 569     error (_("Garbage at end of command"));
 570
 571   /* Get varobj handle, if a valid var obj name was specified.  */
 572   var = varobj_get_handle (argv[oind]);
 573
 574   if (formatFound)
 575     {
 576       char *val = varobj_get_formatted_value (var, format);
 577
 578       ui_out_field_string (uiout, "value", val);
 579       xfree (val);
 580     }
 581   else
 582     {
 583       char *val = varobj_get_value (var);
 584
 585       ui_out_field_string (uiout, "value", val);
 586       xfree (val);
 587     }
 588 }
 589
 590 void
 591 mi_cmd_var_assign (char *command, char **argv, int argc)
 592 {
 593   struct ui_out *uiout = current_uiout;
 594   struct varobj *var;
 595   char *expression, *val;
 596   struct cleanup *cleanup;
 597
 598   if (argc != 2)
 599     error (_("-var-assign: Usage: NAME EXPRESSION."));
 600
 601   /* Get varobj handle, if a valid var obj name was specified.  */
 602   var = varobj_get_handle (argv[0]);
 603
 604   if (!varobj_editable_p (var))
 605     error (_("-var-assign: Variable object is not editable"));
 606
 607   expression = xstrdup (argv[1]);
 608
 609   /* MI command '-var-assign' may write memory, so suppress memory
 610      changed notification if it does.  */
 611   cleanup
 612     = make_cleanup_restore_integer (&mi_suppress_notification.memory);
 613   mi_suppress_notification.memory = 1;
 614
 615   if (!varobj_set_value (var, expression))
 616     error (_("-var-assign: Could not assign "
 617              "expression to variable object"));
 618
 619   val = varobj_get_value (var);
 620   ui_out_field_string (uiout, "value", val);
 621   xfree (val);
 622
 623   do_cleanups (cleanup);
 624 }
 625
 626 /* Type used for parameters passing to mi_cmd_var_update_iter.  */
 627
 628 struct mi_cmd_var_update
 629   {
 630     int only_floating;
 631     enum print_values print_values;
 632   };
 633
 634 /* Helper for mi_cmd_var_update - update each VAR.  */
 635
 636 static void
 637 mi_cmd_var_update_iter (struct varobj *var, void *data_pointer)
 638 {
 639   struct mi_cmd_var_update *data = data_pointer;
 640   int thread_id, thread_stopped;
 641
 642   thread_id = varobj_get_thread_id (var);
 643
 644   if (thread_id == -1 && is_stopped (inferior_ptid))
 645     thread_stopped = 1;
 646   else
 647     {
 648       struct thread_info *tp = find_thread_id (thread_id);
 649
 650       if (tp)
 651         thread_stopped = is_stopped (tp->ptid);
 652       else
 653         thread_stopped = 1;
 654     }
 655
 656   if (thread_stopped
 657       && (!data->only_floating || varobj_floating_p (var)))
 658     varobj_update_one (var, data->print_values, 0 /* implicit */);
 659 }
 660
 661 void
 662 mi_cmd_var_update (char *command, char **argv, int argc)
 663 {
 664   struct ui_out *uiout = current_uiout;
 665   struct cleanup *cleanup;
 666   char *name;
 667   enum print_values print_values;
 668
 669   if (argc != 1 && argc != 2)
 670     error (_("-var-update: Usage: [PRINT_VALUES] NAME."));
 671
 672   if (argc == 1)
 673     name = argv[0];
 674   else
 675     name = argv[1];
 676
 677   if (argc == 2)
 678     print_values = mi_parse_print_values (argv[0]);
 679   else
 680     print_values = PRINT_NO_VALUES;
 681
 682   if (mi_version (uiout) <= 1)
 683     cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
 684   else
 685     cleanup = make_cleanup_ui_out_list_begin_end (uiout, "changelist");
 686
 687   /* Check if the parameter is a "*", which means that we want to
 688      update all variables.  */
 689
 690   if ((*name == '*' || *name == '@') && (*(name + 1) == '\0'))
 691     {
 692       struct mi_cmd_var_update data;
 693
 694       data.only_floating = (*name == '@');
 695       data.print_values = print_values;
 696
 697       /* varobj_update_one automatically updates all the children of
 698          VAROBJ.  Therefore update each VAROBJ only once by iterating
 699          only the root VAROBJs.  */
 700
 701       all_root_varobjs (mi_cmd_var_update_iter, &data);
 702     }
 703   else
 704     {
 705       /* Get varobj handle, if a valid var obj name was specified.  */
 706       struct varobj *var = varobj_get_handle (name);
 707
 708       varobj_update_one (var, print_values, 1 /* explicit */);
 709     }
 710
 711   do_cleanups (cleanup);
 712 }
 713
 714 /* Helper for mi_cmd_var_update().  */
 715
 716 static void
 717 varobj_update_one (struct varobj *var, enum print_values print_values,
 718                    int explicit)
 719 {
 720   struct ui_out *uiout = current_uiout;
 721   VEC (varobj_update_result) *changes;
 722   varobj_update_result *r;
 723   int i;
 724
 725   changes = varobj_update (&var, explicit);
 726
 727   for (i = 0; VEC_iterate (varobj_update_result, changes, i, r); ++i)
 728     {
 729       char *display_hint;
 730       int from, to;
 731       struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
 732
 733       if (mi_version (uiout) > 1)
 734         make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 735       ui_out_field_string (uiout, "name", varobj_get_objname (r->varobj));
 736
 737       switch (r->status)
 738         {
 739         case VAROBJ_IN_SCOPE:
 740           if (mi_print_value_p (r->varobj, print_values))
 741             {
 742               char *val = varobj_get_value (r->varobj);
 743
 744               ui_out_field_string (uiout, "value", val);
 745               xfree (val);
 746             }
 747           ui_out_field_string (uiout, "in_scope", "true");
 748           break;
 749         case VAROBJ_NOT_IN_SCOPE:
 750           ui_out_field_string (uiout, "in_scope", "false");
 751           break;
 752         case VAROBJ_INVALID:
 753           ui_out_field_string (uiout, "in_scope", "invalid");
 754           break;
 755         }
 756
 757       if (r->status != VAROBJ_INVALID)
 758         {
 759           if (r->type_changed)
 760             ui_out_field_string (uiout, "type_changed", "true");
 761           else
 762             ui_out_field_string (uiout, "type_changed", "false");
 763         }
 764
 765       if (r->type_changed)
 766         ui_out_field_string (uiout, "new_type", varobj_get_type (r->varobj));
 767
 768       if (r->type_changed || r->children_changed)
 769         ui_out_field_int (uiout, "new_num_children",
 770                           varobj_get_num_children (r->varobj));
 771
 772       display_hint = varobj_get_display_hint (r->varobj);
 773       if (display_hint)
 774         {
 775           ui_out_field_string (uiout, "displayhint", display_hint);
 776           xfree (display_hint);
 777         }
 778
 779       if (varobj_pretty_printed_p (r->varobj))
 780         ui_out_field_int (uiout, "dynamic", 1);
 781
 782       varobj_get_child_range (r->varobj, &from, &to);
 783       ui_out_field_int (uiout, "has_more",
 784                         varobj_has_more (r->varobj, to));
 785
 786       if (r->new)
 787         {
 788           int j;
 789           varobj_p child;
 790           struct cleanup *cleanup;
 791
 792           cleanup = make_cleanup_ui_out_list_begin_end (uiout, "new_children");
 793           for (j = 0; VEC_iterate (varobj_p, r->new, j, child); ++j)
 794             {
 795               struct cleanup *cleanup_child;
 796
 797               cleanup_child
 798                 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 799               print_varobj (child, print_values, 1 /* print_expression */);
 800               do_cleanups (cleanup_child);
 801             }
 802
 803           do_cleanups (cleanup);
 804           VEC_free (varobj_p, r->new);
 805           r->new = NULL;        /* Paranoia.  */
 806         }
 807
 808       do_cleanups (cleanup);
 809     }
 810   VEC_free (varobj_update_result, changes);
 811 }
 812
 813 void
 814 mi_cmd_enable_pretty_printing (char *command, char **argv, int argc)
 815 {
 816   if (argc != 0)
 817     error (_("-enable-pretty-printing: no arguments allowed"));
 818
 819   varobj_enable_pretty_printing ();
 820 }
 821
 822 void
 823 mi_cmd_var_set_update_range (char *command, char **argv, int argc)
 824 {
 825   struct varobj *var;
 826   int from, to;
 827
 828   if (argc != 3)
 829     error (_("-var-set-update-range: Usage: VAROBJ FROM TO"));
 830
 831   var = varobj_get_handle (argv[0]);
 832   from = atoi (argv[1]);
 833   to = atoi (argv[2]);
 834
 835   varobj_set_child_range (var, from, to);
 836 }