gdb/mi/mi-cmd-var.c

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