gdb/mi/mi-cmd-var.c

   1 /* MI Command Set - varobj commands.
   2
   3    Copyright (C) 2000, 2002, 2004, 2005, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6    Contributed by Cygnus Solutions (a Red Hat company).
   7
   8    This file is part of GDB.
   9
  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.
  14
  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.
  19
  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/>.  */
  22
  23 #include "defs.h"
  24 #include "mi-cmds.h"
  25 #include "ui-out.h"
  26 #include "mi-out.h"
  27 #include "varobj.h"
  28 #include "value.h"
  29 #include <ctype.h>
  30 #include "gdb_string.h"
  31 #include "mi-getopt.h"
  32 #include "gdbthread.h"
  33
  34 const char mi_no_values[] = "--no-values";
  35 const char mi_simple_values[] = "--simple-values";
  36 const char mi_all_values[] = "--all-values";
  37
  38 extern int varobjdebug;         /* defined in varobj.c.  */
  39
  40 static void varobj_update_one (struct varobj *var,
  41                               enum print_values print_values,
  42                               int explicit);
  43
  44 static int mi_print_value_p (struct varobj *var,
  45                              enum print_values print_values);
  46
  47 /* Print variable object VAR.  The PRINT_VALUES parameter controls
  48    if the value should be printed.  The PRINT_EXPRESSION parameter
  49    controls if the expression should be printed.  */
  50 static void
  51 print_varobj (struct varobj *var, enum print_values print_values,
  52               int print_expression)
  53 {
  54   struct ui_out *uiout = current_uiout;
  55   char *type;
  56   int thread_id;
  57   char *display_hint;
  58
  59   ui_out_field_string (uiout, "name", varobj_get_objname (var));
  60   if (print_expression)
  61     ui_out_field_string (uiout, "exp", varobj_get_expression (var));
  62   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
  63
  64   if (mi_print_value_p (var, print_values))
  65     {
  66       char *val = varobj_get_value (var);
  67
  68       ui_out_field_string (uiout, "value", val);
  69       xfree (val);
  70     }
  71
  72   type = varobj_get_type (var);
  73   if (type != NULL)
  74     {
  75       ui_out_field_string (uiout, "type", type);
  76       xfree (type);
  77     }
  78
  79   thread_id = varobj_get_thread_id (var);
  80   if (thread_id > 0)
  81     ui_out_field_int (uiout, "thread-id", thread_id);
  82
  83   if (varobj_get_frozen (var))
  84     ui_out_field_int (uiout, "frozen", 1);
  85
  86   display_hint = varobj_get_display_hint (var);
  87   if (display_hint)
  88     {
  89       ui_out_field_string (uiout, "displayhint", display_hint);
  90       xfree (display_hint);
  91     }
  92
  93   if (varobj_pretty_printed_p (var))
  94     ui_out_field_int (uiout, "dynamic", 1);
  95 }
  96
  97 /* VAROBJ operations */
  98
  99 void
 100 mi_cmd_var_create (char *command, char **argv, int argc)
 101 {
 102   struct ui_out *uiout = current_uiout;
 103   CORE_ADDR frameaddr = 0;
 104   struct varobj *var;
 105   char *name;
 106   char *frame;
 107   char *expr;
 108   struct cleanup *old_cleanups;
 109   enum varobj_type var_type;
 110
 111   if (argc != 3)
 112     {
 113       /* mi_error_message = xstrprintf ("-var-create: Usage:
 114          ...."); return MI_CMD_ERROR; */
 115       error (_("-var-create: Usage: NAME FRAME EXPRESSION."));
 116     }
 117
 118   name = xstrdup (argv[0]);
 119   /* Add cleanup for name. Must be free_current_contents as
 120      name can be reallocated */
 121   old_cleanups = make_cleanup (free_current_contents, &name);
 122
 123   frame = xstrdup (argv[1]);
 124   make_cleanup (xfree, frame);
 125
 126   expr = xstrdup (argv[2]);
 127   make_cleanup (xfree, expr);
 128
 129   if (strcmp (name, "-") == 0)
 130     {
 131       xfree (name);
 132       name = varobj_gen_name ();
 133     }
 134   else if (!isalpha (*name))
 135     error (_("-var-create: name of object must begin with a letter"));
 136
 137   if (strcmp (frame, "*") == 0)
 138     var_type = USE_CURRENT_FRAME;
 139   else if (strcmp (frame, "@") == 0)
 140     var_type = USE_SELECTED_FRAME;
 141   else
 142     {
 143       var_type = USE_SPECIFIED_FRAME;
 144       frameaddr = string_to_core_addr (frame);
 145     }
 146
 147   if (varobjdebug)
 148     fprintf_unfiltered (gdb_stdlog,
 149                     "Name=\"%s\", Frame=\"%s\" (%s), Expression=\"%s\"\n",
 150                         name, frame, hex_string (frameaddr), expr);
 151
 152   var = varobj_create (name, expr, frameaddr, var_type);
 153
 154   if (var == NULL)
 155     error (_("-var-create: unable to create variable object"));
 156
 157   print_varobj (var, PRINT_ALL_VALUES, 0 /* don't print expression */);
 158
 159   ui_out_field_int (uiout, "has_more", varobj_has_more (var, 0));
 160
 161   do_cleanups (old_cleanups);
 162 }
 163
 164 void
 165 mi_cmd_var_delete (char *command, char **argv, int argc)
 166 {
 167   char *name;
 168   struct varobj *var;
 169   int numdel;
 170   int children_only_p = 0;
 171   struct cleanup *old_cleanups;
 172   struct ui_out *uiout = current_uiout;
 173
 174   if (argc < 1 || argc > 2)
 175     error (_("-var-delete: Usage: [-c] EXPRESSION."));
 176
 177   name = xstrdup (argv[0]);
 178   /* Add cleanup for name. Must be free_current_contents as
 179      name can be reallocated */
 180   old_cleanups = make_cleanup (free_current_contents, &name);
 181
 182   /* If we have one single argument it cannot be '-c' or any string
 183      starting with '-'. */
 184   if (argc == 1)
 185     {
 186       if (strcmp (name, "-c") == 0)
 187         error (_("-var-delete: Missing required "
 188                  "argument after '-c': variable object name"));
 189       if (*name == '-')
 190         error (_("-var-delete: Illegal variable object name"));
 191     }
 192
 193   /* If we have 2 arguments they must be '-c' followed by a string
 194      which would be the variable name. */
 195   if (argc == 2)
 196     {
 197       if (strcmp (name, "-c") != 0)
 198         error (_("-var-delete: Invalid option."));
 199       children_only_p = 1;
 200       do_cleanups (old_cleanups);
 201       name = xstrdup (argv[1]);
 202       old_cleanups = make_cleanup (free_current_contents, &name);
 203     }
 204
 205   /* If we didn't error out, now NAME contains the name of the
 206      variable. */
 207
 208   var = varobj_get_handle (name);
 209
 210   numdel = varobj_delete (var, NULL, children_only_p);
 211
 212   ui_out_field_int (uiout, "ndeleted", numdel);
 213
 214   do_cleanups (old_cleanups);
 215 }
 216
 217 /* Parse a string argument into a format value.  */
 218
 219 static enum varobj_display_formats
 220 mi_parse_format (const char *arg)
 221 {
 222   if (arg != NULL)
 223     {
 224       int len;
 225
 226       len = strlen (arg);
 227
 228       if (strncmp (arg, "natural", len) == 0)
 229         return FORMAT_NATURAL;
 230       else if (strncmp (arg, "binary", len) == 0)
 231         return FORMAT_BINARY;
 232       else if (strncmp (arg, "decimal", len) == 0)
 233         return FORMAT_DECIMAL;
 234       else if (strncmp (arg, "hexadecimal", len) == 0)
 235         return FORMAT_HEXADECIMAL;
 236       else if (strncmp (arg, "octal", len) == 0)
 237         return FORMAT_OCTAL;
 238     }
 239
 240   error (_("Must specify the format as: \"natural\", "
 241            "\"binary\", \"decimal\", \"hexadecimal\", or \"octal\""));
 242 }
 243
 244 void
 245 mi_cmd_var_set_format (char *command, char **argv, int argc)
 246 {
 247   enum varobj_display_formats format;
 248   struct varobj *var;
 249   char *val;
 250   struct ui_out *uiout = current_uiout;
 251
 252   if (argc != 2)
 253     error (_("-var-set-format: Usage: NAME FORMAT."));
 254
 255   /* Get varobj handle, if a valid var obj name was specified */
 256   var = varobj_get_handle (argv[0]);
 257
 258   format = mi_parse_format (argv[1]);
 259
 260   /* Set the format of VAR to given format */
 261   varobj_set_display_format (var, format);
 262
 263   /* Report the new current format */
 264   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 265
 266   /* Report the value in the new format */
 267   val = varobj_get_value (var);
 268   ui_out_field_string (uiout, "value", val);
 269   xfree (val);
 270 }
 271
 272 void
 273 mi_cmd_var_set_visualizer (char *command, char **argv, int argc)
 274 {
 275   struct varobj *var;
 276
 277   if (argc != 2)
 278     error (_("Usage: NAME VISUALIZER_FUNCTION."));
 279
 280   var = varobj_get_handle (argv[0]);
 281
 282   if (var == NULL)
 283     error (_("Variable object not found"));
 284
 285   varobj_set_visualizer (var, argv[1]);
 286 }
 287
 288 void
 289 mi_cmd_var_set_frozen (char *command, char **argv, int argc)
 290 {
 291   struct varobj *var;
 292   int frozen;
 293
 294   if (argc != 2)
 295     error (_("-var-set-format: Usage: NAME FROZEN_FLAG."));
 296
 297   var = varobj_get_handle (argv[0]);
 298
 299   if (strcmp (argv[1], "0") == 0)
 300     frozen = 0;
 301   else if (strcmp (argv[1], "1") == 0)
 302     frozen = 1;
 303   else
 304     error (_("Invalid flag value"));
 305
 306   varobj_set_frozen (var, frozen);
 307
 308   /* We don't automatically return the new value, or what varobjs got new
 309      values during unfreezing.  If this information is required, client
 310      should call -var-update explicitly.  */
 311 }
 312
 313
 314 void
 315 mi_cmd_var_show_format (char *command, char **argv, int argc)
 316 {
 317   struct ui_out *uiout = current_uiout;
 318   enum varobj_display_formats format;
 319   struct varobj *var;
 320
 321   if (argc != 1)
 322     error (_("-var-show-format: Usage: NAME."));
 323
 324   /* Get varobj handle, if a valid var obj name was specified */
 325   var = varobj_get_handle (argv[0]);
 326
 327   format = varobj_get_display_format (var);
 328
 329   /* Report the current format */
 330   ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
 331 }
 332
 333 void
 334 mi_cmd_var_info_num_children (char *command, char **argv, int argc)
 335 {
 336   struct ui_out *uiout = current_uiout;
 337   struct varobj *var;
 338
 339   if (argc != 1)
 340     error (_("-var-info-num-children: Usage: NAME."));
 341
 342   /* Get varobj handle, if a valid var obj name was specified */
 343   var = varobj_get_handle (argv[0]);
 344
 345   ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
 346 }
 347
 348 /* Parse a string argument into a print_values value.  */
 349
 350 static enum print_values
 351 mi_parse_values_option (const char *arg)
 352 {
 353   if (strcmp (arg, "0") == 0
 354       || strcmp (arg, mi_no_values) == 0)
 355     return PRINT_NO_VALUES;
 356   else if (strcmp (arg, "1") == 0
 357            || strcmp (arg, mi_all_values) == 0)
 358     return PRINT_ALL_VALUES;
 359   else if (strcmp (arg, "2") == 0
 360            || strcmp (arg, mi_simple_values) == 0)
 361     return PRINT_SIMPLE_VALUES;
 362   else
 363     error (_("Unknown value for PRINT_VALUES\n\
 364 Must be: 0 or \"%s\", 1 or \"%s\", 2 or \"%s\""),
 365            mi_no_values, mi_simple_values, mi_all_values);
 366 }
 367
 368 /* Return 1 if given the argument PRINT_VALUES we should display
 369    the varobj VAR.  */
 370
 371 static int
 372 mi_print_value_p (struct varobj *var, enum print_values print_values)
 373 {
 374   struct type *type;
 375
 376   if (print_values == PRINT_NO_VALUES)
 377     return 0;
 378
 379   if (print_values == PRINT_ALL_VALUES)
 380     return 1;
 381
 382   if (varobj_pretty_printed_p (var))
 383     return 1;
 384
 385   type = varobj_get_gdb_type (var);
 386   if (type == NULL)
 387     return 1;
 388   else
 389     {
 390       type = check_typedef (type);
 391
 392       /* For PRINT_SIMPLE_VALUES, only print the value if it has a type
 393          and that type is not a compound type.  */
 394       return (TYPE_CODE (type) != TYPE_CODE_ARRAY
 395               && TYPE_CODE (type) != TYPE_CODE_STRUCT
 396               && TYPE_CODE (type) != TYPE_CODE_UNION);
 397     }
 398 }
 399
 400 void
 401 mi_cmd_var_list_children (char *command, char **argv, int argc)
 402 {
 403   struct ui_out *uiout = current_uiout;
 404   struct varobj *var;
 405   VEC(varobj_p) *children;
 406   struct varobj *child;
 407   enum print_values print_values;
 408   int ix;
 409   int from, to;
 410   char *display_hint;
 411
 412   if (argc < 1 || argc > 4)
 413     error (_("-var-list-children: Usage: "
 414              "[PRINT_VALUES] NAME [FROM TO]"));
 415
 416   /* Get varobj handle, if a valid var obj name was specified */
 417   if (argc == 1 || argc == 3)
 418     var = varobj_get_handle (argv[0]);
 419   else
 420     var = varobj_get_handle (argv[1]);
 421
 422   if (argc > 2)
 423     {
 424       from = atoi (argv[argc - 2]);
 425       to = atoi (argv[argc - 1]);
 426     }
 427   else
 428     {
 429       from = -1;
 430       to = -1;
 431     }
 432
 433   children = varobj_list_children (var, &from, &to);
 434   ui_out_field_int (uiout, "numchild", to - from);
 435   if (argc == 2 || argc == 4)
 436     print_values = mi_parse_values_option (argv[0]);
 437   else
 438     print_values = PRINT_NO_VALUES;
 439
 440   display_hint = varobj_get_display_hint (var);
 441   if (display_hint)
 442     {
 443       ui_out_field_string (uiout, "displayhint", display_hint);
 444       xfree (display_hint);
 445     }
 446
 447   if (from < to)
 448     {
 449       struct cleanup *cleanup_children;
 450
 451       if (mi_version (uiout) == 1)
 452         cleanup_children
 453           = make_cleanup_ui_out_tuple_begin_end (uiout, "children");
 454       else
 455         cleanup_children
 456           = make_cleanup_ui_out_list_begin_end (uiout, "children");
 457       for (ix = from;
 458            ix < to && VEC_iterate (varobj_p, children, ix, child);
 459            ++ix)
 460         {
 461           struct cleanup *cleanup_child;
 462
 463           cleanup_child = make_cleanup_ui_out_tuple_begin_end (uiout, "child");
 464           print_varobj (child, print_values, 1 /* print expression */);
 465           do_cleanups (cleanup_child);
 466         }
 467       do_cleanups (cleanup_children);
 468     }
 469
 470   ui_out_field_int (uiout, "has_more", varobj_has_more (var, to));
 471 }
 472
 473 void
 474 mi_cmd_var_info_type (char *command, char **argv, int argc)
 475 {
 476   struct ui_out *uiout = current_uiout;
 477   struct varobj *var;
 478
 479   if (argc != 1)
 480     error (_("-var-info-type: Usage: NAME."));
 481
 482   /* Get varobj handle, if a valid var obj name was specified */
 483   var = varobj_get_handle (argv[0]);
 484
 485   ui_out_field_string (uiout, "type", varobj_get_type (var));
 486 }
 487
 488 void
 489 mi_cmd_var_info_path_expression (char *command, char **argv, int argc)
 490 {
 491   struct ui_out *uiout = current_uiout;
 492   struct varobj *var;
 493   char *path_expr;
 494
 495   if (argc != 1)
 496     error (_("Usage: NAME."));
 497
 498   /* Get varobj handle, if a valid var obj name was specified.  */
 499   var = varobj_get_handle (argv[0]);
 500
 501   path_expr = varobj_get_path_expr (var);
 502
 503   ui_out_field_string (uiout, "path_expr", path_expr);
 504 }
 505
 506 void
 507 mi_cmd_var_info_expression (char *command, char **argv, int argc)
 508 {
 509   struct ui_out *uiout = current_uiout;
 510   enum varobj_languages lang;
 511   struct varobj *var;
 512
 513   if (argc != 1)
 514     error (_("-var-info-expression: Usage: NAME."));
 515
 516   /* Get varobj handle, if a valid var obj name was specified */
 517   var = varobj_get_handle (argv[0]);
 518
 519   lang = varobj_get_language (var);
 520
 521   ui_out_field_string (uiout, "lang", varobj_language_string[(int) lang]);
 522   ui_out_field_string (uiout, "exp", varobj_get_expression (var));
 523 }
 524
 525 void
 526 mi_cmd_var_show_attributes (char *command, char **argv, int argc)
 527 {
 528   struct ui_out *uiout = current_uiout;
 529   int attr;
 530   char *attstr;
 531   struct varobj *var;
 532
 533   if (argc != 1)
 534     error (_("-var-show-attributes: Usage: NAME."));
 535
 536   /* Get varobj handle, if a valid var obj name was specified */
 537   var = varobj_get_handle (argv[0]);
 538
 539   attr = varobj_get_attributes (var);
 540   /* FIXME: define masks for attributes */
 541   if (attr & 0x00000001)
 542     attstr = "editable";
 543   else
 544     attstr = "noneditable";
 545
 546   ui_out_field_string (uiout, "attr", attstr);
 547 }
 548
 549 void
 550 mi_cmd_var_evaluate_expression (char *command, char **argv, int argc)
 551 {
 552   struct ui_out *uiout = current_uiout;
 553   struct varobj *var;
 554
 555   enum varobj_display_formats format;
 556   int formatFound;
 557   int optind;
 558   char *optarg;
 559
 560   enum opt
 561     {
 562       OP_FORMAT
 563     };
 564   static struct mi_opt opts[] =
 565   {
 566     {"f", OP_FORMAT, 1},
 567     { 0, 0, 0 }
 568   };
 569
 570   /* Parse arguments */
 571   format = FORMAT_NATURAL;
 572   formatFound = 0;
 573   optind = 0;
 574   while (1)
 575     {
 576       int opt = mi_getopt ("-var-evaluate-expression", argc, argv,
 577                            opts, &optind, &optarg);
 578
 579       if (opt < 0)
 580         break;
 581       switch ((enum opt) opt)
 582       {
 583         case OP_FORMAT:
 584           if (formatFound)
 585             error (_("Cannot specify format more than once"));
 586
 587           format = mi_parse_format (optarg);
 588           formatFound = 1;
 589           break;
 590       }
 591     }
 592
 593   if (optind >= argc)
 594     error (_("Usage: [-f FORMAT] NAME"));
 595
 596   if (optind < argc - 1)
 597     error (_("Garbage at end of command"));
 598
 599      /* Get varobj handle, if a valid var obj name was specified */
 600   var = varobj_get_handle (argv[optind]);
 601
 602   if (formatFound)
 603     {
 604       char *val = varobj_get_formatted_value (var, format);
 605
 606       ui_out_field_string (uiout, "value", val);
 607       xfree (val);
 608     }
 609   else
 610     {
 611       char *val = varobj_get_value (var);
 612
 613       ui_out_field_string (uiout, "value", val);
 614       xfree (val);
 615     }
 616 }
 617
 618 void
 619 mi_cmd_var_assign (char *command, char **argv, int argc)
 620 {
 621   struct ui_out *uiout = current_uiout;
 622   struct varobj *var;
 623   char *expression, *val;
 624
 625   if (argc != 2)
 626     error (_("-var-assign: Usage: NAME EXPRESSION."));
 627
 628   /* Get varobj handle, if a valid var obj name was specified */
 629   var = varobj_get_handle (argv[0]);
 630
 631   if (!varobj_editable_p (var))
 632     error (_("-var-assign: Variable object is not editable"));
 633
 634   expression = xstrdup (argv[1]);
 635
 636   if (!varobj_set_value (var, expression))
 637     error (_("-var-assign: Could not assign "
 638              "expression to variable object"));
 639
 640   val = varobj_get_value (var);
 641   ui_out_field_string (uiout, "value", val);
 642   xfree (val);
 643 }
 644
 645 /* Type used for parameters passing to mi_cmd_var_update_iter.  */
 646
 647 struct mi_cmd_var_update
 648   {
 649     int only_floating;
 650     enum print_values print_values;
 651   };
 652
 653 /* Helper for mi_cmd_var_update - update each VAR.  */
 654
 655 static void
 656 mi_cmd_var_update_iter (struct varobj *var, void *data_pointer)
 657 {
 658   struct mi_cmd_var_update *data = data_pointer;
 659   int thread_id, thread_stopped;
 660
 661   thread_id = varobj_get_thread_id (var);
 662
 663   if (thread_id == -1 && is_stopped (inferior_ptid))
 664     thread_stopped = 1;
 665   else
 666     {
 667       struct thread_info *tp = find_thread_id (thread_id);
 668
 669       if (tp)
 670         thread_stopped = is_stopped (tp->ptid);
 671       else
 672         thread_stopped = 1;
 673     }
 674
 675   if (thread_stopped)
 676     if (!data->only_floating || varobj_floating_p (var))
 677       varobj_update_one (var, data->print_values, 0 /* implicit */);
 678 }
 679
 680 void
 681 mi_cmd_var_update (char *command, char **argv, int argc)
 682 {
 683   struct ui_out *uiout = current_uiout;
 684   struct cleanup *cleanup;
 685   char *name;
 686   enum print_values print_values;
 687
 688   if (argc != 1 && argc != 2)
 689     error (_("-var-update: Usage: [PRINT_VALUES] NAME."));
 690
 691   if (argc == 1)
 692     name = argv[0];
 693   else
 694     name = (argv[1]);
 695
 696   if (argc == 2)
 697     print_values = mi_parse_values_option (argv[0]);
 698   else
 699     print_values = PRINT_NO_VALUES;
 700
 701   if (mi_version (uiout) <= 1)
 702     cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, "changelist");
 703   else
 704     cleanup = make_cleanup_ui_out_list_begin_end (uiout, "changelist");
 705
 706   /* Check if the parameter is a "*" which means that we want
 707      to update all variables */
 708
 709   if ((*name == '*' || *name == '@') && (*(name + 1) == '\0'))
 710     {
 711       struct mi_cmd_var_update data;
 712
 713       data.only_floating = *name == '@';
 714       data.print_values = print_values;
 715
 716       /* varobj_update_one automatically updates all the children of VAROBJ.
 717          Therefore update each VAROBJ only once by iterating only the root
 718          VAROBJs.  */
 719
 720       all_root_varobjs (mi_cmd_var_update_iter, &data);
 721     }
 722   else
 723     {
 724       /* Get varobj handle, if a valid var obj name was specified */
 725       struct varobj *var = varobj_get_handle (name);
 726
 727       varobj_update_one (var, print_values, 1 /* explicit */);
 728     }
 729
 730   do_cleanups (cleanup);
 731 }
 732
 733 /* Helper for mi_cmd_var_update().  */
 734
 735 static void
 736 varobj_update_one (struct varobj *var, enum print_values print_values,
 737                    int explicit)
 738 {
 739   struct ui_out *uiout = current_uiout;
 740   struct cleanup *cleanup = NULL;
 741   VEC (varobj_update_result) *changes;
 742   varobj_update_result *r;
 743   int i;
 744
 745   changes = varobj_update (&var, explicit);
 746
 747   for (i = 0; VEC_iterate (varobj_update_result, changes, i, r); ++i)
 748     {
 749       char *display_hint;
 750       int from, to;
 751
 752       if (mi_version (uiout) > 1)
 753         cleanup = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 754       ui_out_field_string (uiout, "name", varobj_get_objname (r->varobj));
 755
 756       switch (r->status)
 757         {
 758         case VAROBJ_IN_SCOPE:
 759           if (mi_print_value_p (r->varobj, print_values))
 760             {
 761               char *val = varobj_get_value (r->varobj);
 762
 763               ui_out_field_string (uiout, "value", val);
 764               xfree (val);
 765             }
 766           ui_out_field_string (uiout, "in_scope", "true");
 767           break;
 768         case VAROBJ_NOT_IN_SCOPE:
 769           ui_out_field_string (uiout, "in_scope", "false");
 770           break;
 771         case VAROBJ_INVALID:
 772           ui_out_field_string (uiout, "in_scope", "invalid");
 773           break;
 774         }
 775
 776       if (r->status != VAROBJ_INVALID)
 777         {
 778           if (r->type_changed)
 779             ui_out_field_string (uiout, "type_changed", "true");
 780           else
 781             ui_out_field_string (uiout, "type_changed", "false");
 782         }
 783
 784       if (r->type_changed)
 785         ui_out_field_string (uiout, "new_type", varobj_get_type (r->varobj));
 786
 787       if (r->type_changed || r->children_changed)
 788         ui_out_field_int (uiout, "new_num_children",
 789                           varobj_get_num_children (r->varobj));
 790
 791       display_hint = varobj_get_display_hint (var);
 792       if (display_hint)
 793         {
 794           ui_out_field_string (uiout, "displayhint", display_hint);
 795           xfree (display_hint);
 796         }
 797
 798       if (varobj_pretty_printed_p (var))
 799         ui_out_field_int (uiout, "dynamic", 1);
 800
 801       varobj_get_child_range (r->varobj, &from, &to);
 802       ui_out_field_int (uiout, "has_more",
 803                         varobj_has_more (r->varobj, to));
 804
 805       if (r->new)
 806         {
 807           int j;
 808           varobj_p child;
 809           struct cleanup *cleanup;
 810
 811           cleanup = make_cleanup_ui_out_list_begin_end (uiout, "new_children");
 812           for (j = 0; VEC_iterate (varobj_p, r->new, j, child); ++j)
 813             {
 814               struct cleanup *cleanup_child;
 815
 816               cleanup_child
 817                 = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
 818               print_varobj (child, print_values, 1 /* print_expression */);
 819               do_cleanups (cleanup_child);
 820             }
 821
 822           do_cleanups (cleanup);
 823           VEC_free (varobj_p, r->new);
 824           r->new = NULL;        /* Paranoia.  */
 825         }
 826
 827       if (mi_version (uiout) > 1)
 828         do_cleanups (cleanup);
 829     }
 830   VEC_free (varobj_update_result, changes);
 831 }
 832
 833 void
 834 mi_cmd_enable_pretty_printing (char *command, char **argv, int argc)
 835 {
 836   if (argc != 0)
 837     error (_("-enable-pretty-printing: no arguments allowed"));
 838   varobj_enable_pretty_printing ();
 839 }
 840
 841 void
 842 mi_cmd_var_set_update_range (char *command, char **argv, int argc)
 843 {
 844   struct varobj *var;
 845   int from, to;
 846
 847   if (argc != 3)
 848     error (_("-var-set-update-range: Usage: VAROBJ FROM TO"));
 849
 850   var = varobj_get_handle (argv[0]);
 851   from = atoi (argv[1]);
 852   to = atoi (argv[2]);
 853
 854   varobj_set_child_range (var, from, to);
 855 }