| 1 | /* Implementation of the GDB variable objects API. |
| 2 | |
| 3 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 19 | Boston, MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "exceptions.h" |
| 23 | #include "value.h" |
| 24 | #include "expression.h" |
| 25 | #include "frame.h" |
| 26 | #include "language.h" |
| 27 | #include "wrapper.h" |
| 28 | #include "gdbcmd.h" |
| 29 | #include "block.h" |
| 30 | |
| 31 | #include "gdb_assert.h" |
| 32 | #include "gdb_string.h" |
| 33 | |
| 34 | #include "varobj.h" |
| 35 | #include "vec.h" |
| 36 | |
| 37 | /* Non-zero if we want to see trace of varobj level stuff. */ |
| 38 | |
| 39 | int varobjdebug = 0; |
| 40 | static void |
| 41 | show_varobjdebug (struct ui_file *file, int from_tty, |
| 42 | struct cmd_list_element *c, const char *value) |
| 43 | { |
| 44 | fprintf_filtered (file, _("Varobj debugging is %s.\n"), value); |
| 45 | } |
| 46 | |
| 47 | /* String representations of gdb's format codes */ |
| 48 | char *varobj_format_string[] = |
| 49 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
| 50 | |
| 51 | /* String representations of gdb's known languages */ |
| 52 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
| 53 | |
| 54 | /* Data structures */ |
| 55 | |
| 56 | /* Every root variable has one of these structures saved in its |
| 57 | varobj. Members which must be free'd are noted. */ |
| 58 | struct varobj_root |
| 59 | { |
| 60 | |
| 61 | /* Alloc'd expression for this parent. */ |
| 62 | struct expression *exp; |
| 63 | |
| 64 | /* Block for which this expression is valid */ |
| 65 | struct block *valid_block; |
| 66 | |
| 67 | /* The frame for this expression */ |
| 68 | struct frame_id frame; |
| 69 | |
| 70 | /* If 1, "update" always recomputes the frame & valid block |
| 71 | using the currently selected frame. */ |
| 72 | int use_selected_frame; |
| 73 | |
| 74 | /* Language info for this variable and its children */ |
| 75 | struct language_specific *lang; |
| 76 | |
| 77 | /* The varobj for this root node. */ |
| 78 | struct varobj *rootvar; |
| 79 | |
| 80 | /* Next root variable */ |
| 81 | struct varobj_root *next; |
| 82 | }; |
| 83 | |
| 84 | typedef struct varobj *varobj_p; |
| 85 | |
| 86 | DEF_VEC_P (varobj_p); |
| 87 | |
| 88 | /* Every variable in the system has a structure of this type defined |
| 89 | for it. This structure holds all information necessary to manipulate |
| 90 | a particular object variable. Members which must be freed are noted. */ |
| 91 | struct varobj |
| 92 | { |
| 93 | |
| 94 | /* Alloc'd name of the variable for this object.. If this variable is a |
| 95 | child, then this name will be the child's source name. |
| 96 | (bar, not foo.bar) */ |
| 97 | /* NOTE: This is the "expression" */ |
| 98 | char *name; |
| 99 | |
| 100 | /* The alloc'd name for this variable's object. This is here for |
| 101 | convenience when constructing this object's children. */ |
| 102 | char *obj_name; |
| 103 | |
| 104 | /* Index of this variable in its parent or -1 */ |
| 105 | int index; |
| 106 | |
| 107 | /* The type of this variable. This may NEVER be NULL. */ |
| 108 | struct type *type; |
| 109 | |
| 110 | /* The value of this expression or subexpression. A NULL value |
| 111 | indicates there was an error getting this value. |
| 112 | Invariant: if varobj_value_is_changeable_p (this) is non-zero, |
| 113 | the value is either NULL, or not lazy. */ |
| 114 | struct value *value; |
| 115 | |
| 116 | /* The number of (immediate) children this variable has */ |
| 117 | int num_children; |
| 118 | |
| 119 | /* If this object is a child, this points to its immediate parent. */ |
| 120 | struct varobj *parent; |
| 121 | |
| 122 | /* Children of this object. */ |
| 123 | VEC (varobj_p) *children; |
| 124 | |
| 125 | /* Description of the root variable. Points to root variable for children. */ |
| 126 | struct varobj_root *root; |
| 127 | |
| 128 | /* The format of the output for this object */ |
| 129 | enum varobj_display_formats format; |
| 130 | |
| 131 | /* Was this variable updated via a varobj_set_value operation */ |
| 132 | int updated; |
| 133 | |
| 134 | /* Last print value. */ |
| 135 | char *print_value; |
| 136 | }; |
| 137 | |
| 138 | struct cpstack |
| 139 | { |
| 140 | char *name; |
| 141 | struct cpstack *next; |
| 142 | }; |
| 143 | |
| 144 | /* A list of varobjs */ |
| 145 | |
| 146 | struct vlist |
| 147 | { |
| 148 | struct varobj *var; |
| 149 | struct vlist *next; |
| 150 | }; |
| 151 | |
| 152 | /* Private function prototypes */ |
| 153 | |
| 154 | /* Helper functions for the above subcommands. */ |
| 155 | |
| 156 | static int delete_variable (struct cpstack **, struct varobj *, int); |
| 157 | |
| 158 | static void delete_variable_1 (struct cpstack **, int *, |
| 159 | struct varobj *, int, int); |
| 160 | |
| 161 | static int install_variable (struct varobj *); |
| 162 | |
| 163 | static void uninstall_variable (struct varobj *); |
| 164 | |
| 165 | static struct varobj *create_child (struct varobj *, int, char *); |
| 166 | |
| 167 | /* Utility routines */ |
| 168 | |
| 169 | static struct varobj *new_variable (void); |
| 170 | |
| 171 | static struct varobj *new_root_variable (void); |
| 172 | |
| 173 | static void free_variable (struct varobj *var); |
| 174 | |
| 175 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
| 176 | |
| 177 | static struct type *get_type (struct varobj *var); |
| 178 | |
| 179 | static struct type *get_value_type (struct varobj *var); |
| 180 | |
| 181 | static struct type *get_target_type (struct type *); |
| 182 | |
| 183 | static enum varobj_display_formats variable_default_display (struct varobj *); |
| 184 | |
| 185 | static void cppush (struct cpstack **pstack, char *name); |
| 186 | |
| 187 | static char *cppop (struct cpstack **pstack); |
| 188 | |
| 189 | static int install_new_value (struct varobj *var, struct value *value, |
| 190 | int initial); |
| 191 | |
| 192 | /* Language-specific routines. */ |
| 193 | |
| 194 | static enum varobj_languages variable_language (struct varobj *var); |
| 195 | |
| 196 | static int number_of_children (struct varobj *); |
| 197 | |
| 198 | static char *name_of_variable (struct varobj *); |
| 199 | |
| 200 | static char *name_of_child (struct varobj *, int); |
| 201 | |
| 202 | static struct value *value_of_root (struct varobj **var_handle, int *); |
| 203 | |
| 204 | static struct value *value_of_child (struct varobj *parent, int index); |
| 205 | |
| 206 | static int variable_editable (struct varobj *var); |
| 207 | |
| 208 | static char *my_value_of_variable (struct varobj *var); |
| 209 | |
| 210 | static char *value_get_print_value (struct value *value, |
| 211 | enum varobj_display_formats format); |
| 212 | |
| 213 | static int varobj_value_is_changeable_p (struct varobj *var); |
| 214 | |
| 215 | static int is_root_p (struct varobj *var); |
| 216 | |
| 217 | /* C implementation */ |
| 218 | |
| 219 | static int c_number_of_children (struct varobj *var); |
| 220 | |
| 221 | static char *c_name_of_variable (struct varobj *parent); |
| 222 | |
| 223 | static char *c_name_of_child (struct varobj *parent, int index); |
| 224 | |
| 225 | static struct value *c_value_of_root (struct varobj **var_handle); |
| 226 | |
| 227 | static struct value *c_value_of_child (struct varobj *parent, int index); |
| 228 | |
| 229 | static struct type *c_type_of_child (struct varobj *parent, int index); |
| 230 | |
| 231 | static int c_variable_editable (struct varobj *var); |
| 232 | |
| 233 | static char *c_value_of_variable (struct varobj *var); |
| 234 | |
| 235 | /* C++ implementation */ |
| 236 | |
| 237 | static int cplus_number_of_children (struct varobj *var); |
| 238 | |
| 239 | static void cplus_class_num_children (struct type *type, int children[3]); |
| 240 | |
| 241 | static char *cplus_name_of_variable (struct varobj *parent); |
| 242 | |
| 243 | static char *cplus_name_of_child (struct varobj *parent, int index); |
| 244 | |
| 245 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
| 246 | |
| 247 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
| 248 | |
| 249 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
| 250 | |
| 251 | static int cplus_variable_editable (struct varobj *var); |
| 252 | |
| 253 | static char *cplus_value_of_variable (struct varobj *var); |
| 254 | |
| 255 | /* Java implementation */ |
| 256 | |
| 257 | static int java_number_of_children (struct varobj *var); |
| 258 | |
| 259 | static char *java_name_of_variable (struct varobj *parent); |
| 260 | |
| 261 | static char *java_name_of_child (struct varobj *parent, int index); |
| 262 | |
| 263 | static struct value *java_value_of_root (struct varobj **var_handle); |
| 264 | |
| 265 | static struct value *java_value_of_child (struct varobj *parent, int index); |
| 266 | |
| 267 | static struct type *java_type_of_child (struct varobj *parent, int index); |
| 268 | |
| 269 | static int java_variable_editable (struct varobj *var); |
| 270 | |
| 271 | static char *java_value_of_variable (struct varobj *var); |
| 272 | |
| 273 | /* The language specific vector */ |
| 274 | |
| 275 | struct language_specific |
| 276 | { |
| 277 | |
| 278 | /* The language of this variable */ |
| 279 | enum varobj_languages language; |
| 280 | |
| 281 | /* The number of children of PARENT. */ |
| 282 | int (*number_of_children) (struct varobj * parent); |
| 283 | |
| 284 | /* The name (expression) of a root varobj. */ |
| 285 | char *(*name_of_variable) (struct varobj * parent); |
| 286 | |
| 287 | /* The name of the INDEX'th child of PARENT. */ |
| 288 | char *(*name_of_child) (struct varobj * parent, int index); |
| 289 | |
| 290 | /* The ``struct value *'' of the root variable ROOT. */ |
| 291 | struct value *(*value_of_root) (struct varobj ** root_handle); |
| 292 | |
| 293 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
| 294 | struct value *(*value_of_child) (struct varobj * parent, int index); |
| 295 | |
| 296 | /* The type of the INDEX'th child of PARENT. */ |
| 297 | struct type *(*type_of_child) (struct varobj * parent, int index); |
| 298 | |
| 299 | /* Is VAR editable? */ |
| 300 | int (*variable_editable) (struct varobj * var); |
| 301 | |
| 302 | /* The current value of VAR. */ |
| 303 | char *(*value_of_variable) (struct varobj * var); |
| 304 | }; |
| 305 | |
| 306 | /* Array of known source language routines. */ |
| 307 | static struct language_specific languages[vlang_end] = { |
| 308 | /* Unknown (try treating as C */ |
| 309 | { |
| 310 | vlang_unknown, |
| 311 | c_number_of_children, |
| 312 | c_name_of_variable, |
| 313 | c_name_of_child, |
| 314 | c_value_of_root, |
| 315 | c_value_of_child, |
| 316 | c_type_of_child, |
| 317 | c_variable_editable, |
| 318 | c_value_of_variable} |
| 319 | , |
| 320 | /* C */ |
| 321 | { |
| 322 | vlang_c, |
| 323 | c_number_of_children, |
| 324 | c_name_of_variable, |
| 325 | c_name_of_child, |
| 326 | c_value_of_root, |
| 327 | c_value_of_child, |
| 328 | c_type_of_child, |
| 329 | c_variable_editable, |
| 330 | c_value_of_variable} |
| 331 | , |
| 332 | /* C++ */ |
| 333 | { |
| 334 | vlang_cplus, |
| 335 | cplus_number_of_children, |
| 336 | cplus_name_of_variable, |
| 337 | cplus_name_of_child, |
| 338 | cplus_value_of_root, |
| 339 | cplus_value_of_child, |
| 340 | cplus_type_of_child, |
| 341 | cplus_variable_editable, |
| 342 | cplus_value_of_variable} |
| 343 | , |
| 344 | /* Java */ |
| 345 | { |
| 346 | vlang_java, |
| 347 | java_number_of_children, |
| 348 | java_name_of_variable, |
| 349 | java_name_of_child, |
| 350 | java_value_of_root, |
| 351 | java_value_of_child, |
| 352 | java_type_of_child, |
| 353 | java_variable_editable, |
| 354 | java_value_of_variable} |
| 355 | }; |
| 356 | |
| 357 | /* A little convenience enum for dealing with C++/Java */ |
| 358 | enum vsections |
| 359 | { |
| 360 | v_public = 0, v_private, v_protected |
| 361 | }; |
| 362 | |
| 363 | /* Private data */ |
| 364 | |
| 365 | /* Mappings of varobj_display_formats enums to gdb's format codes */ |
| 366 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
| 367 | |
| 368 | /* Header of the list of root variable objects */ |
| 369 | static struct varobj_root *rootlist; |
| 370 | static int rootcount = 0; /* number of root varobjs in the list */ |
| 371 | |
| 372 | /* Prime number indicating the number of buckets in the hash table */ |
| 373 | /* A prime large enough to avoid too many colisions */ |
| 374 | #define VAROBJ_TABLE_SIZE 227 |
| 375 | |
| 376 | /* Pointer to the varobj hash table (built at run time) */ |
| 377 | static struct vlist **varobj_table; |
| 378 | |
| 379 | /* Is the variable X one of our "fake" children? */ |
| 380 | #define CPLUS_FAKE_CHILD(x) \ |
| 381 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) |
| 382 | \f |
| 383 | |
| 384 | /* API Implementation */ |
| 385 | static int |
| 386 | is_root_p (struct varobj *var) |
| 387 | { |
| 388 | return (var->root->rootvar == var); |
| 389 | } |
| 390 | |
| 391 | /* Creates a varobj (not its children) */ |
| 392 | |
| 393 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
| 394 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ |
| 395 | |
| 396 | static struct frame_info * |
| 397 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) |
| 398 | { |
| 399 | struct frame_info *frame = NULL; |
| 400 | |
| 401 | if (frame_addr == (CORE_ADDR) 0) |
| 402 | return NULL; |
| 403 | |
| 404 | while (1) |
| 405 | { |
| 406 | frame = get_prev_frame (frame); |
| 407 | if (frame == NULL) |
| 408 | return NULL; |
| 409 | if (get_frame_base_address (frame) == frame_addr) |
| 410 | return frame; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | struct varobj * |
| 415 | varobj_create (char *objname, |
| 416 | char *expression, CORE_ADDR frame, enum varobj_type type) |
| 417 | { |
| 418 | struct varobj *var; |
| 419 | struct frame_info *fi; |
| 420 | struct frame_info *old_fi = NULL; |
| 421 | struct block *block; |
| 422 | struct cleanup *old_chain; |
| 423 | |
| 424 | /* Fill out a varobj structure for the (root) variable being constructed. */ |
| 425 | var = new_root_variable (); |
| 426 | old_chain = make_cleanup_free_variable (var); |
| 427 | |
| 428 | if (expression != NULL) |
| 429 | { |
| 430 | char *p; |
| 431 | enum varobj_languages lang; |
| 432 | struct value *value; |
| 433 | |
| 434 | /* Parse and evaluate the expression, filling in as much |
| 435 | of the variable's data as possible */ |
| 436 | |
| 437 | /* Allow creator to specify context of variable */ |
| 438 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
| 439 | fi = deprecated_selected_frame; |
| 440 | else |
| 441 | /* FIXME: cagney/2002-11-23: This code should be doing a |
| 442 | lookup using the frame ID and not just the frame's |
| 443 | ``address''. This, of course, means an interface change. |
| 444 | However, with out that interface change ISAs, such as the |
| 445 | ia64 with its two stacks, won't work. Similar goes for the |
| 446 | case where there is a frameless function. */ |
| 447 | fi = find_frame_addr_in_frame_chain (frame); |
| 448 | |
| 449 | /* frame = -2 means always use selected frame */ |
| 450 | if (type == USE_SELECTED_FRAME) |
| 451 | var->root->use_selected_frame = 1; |
| 452 | |
| 453 | block = NULL; |
| 454 | if (fi != NULL) |
| 455 | block = get_frame_block (fi, 0); |
| 456 | |
| 457 | p = expression; |
| 458 | innermost_block = NULL; |
| 459 | /* Wrap the call to parse expression, so we can |
| 460 | return a sensible error. */ |
| 461 | if (!gdb_parse_exp_1 (&p, block, 0, &var->root->exp)) |
| 462 | { |
| 463 | return NULL; |
| 464 | } |
| 465 | |
| 466 | /* Don't allow variables to be created for types. */ |
| 467 | if (var->root->exp->elts[0].opcode == OP_TYPE) |
| 468 | { |
| 469 | do_cleanups (old_chain); |
| 470 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
| 471 | " as an expression.\n"); |
| 472 | return NULL; |
| 473 | } |
| 474 | |
| 475 | var->format = variable_default_display (var); |
| 476 | var->root->valid_block = innermost_block; |
| 477 | var->name = savestring (expression, strlen (expression)); |
| 478 | |
| 479 | /* When the frame is different from the current frame, |
| 480 | we must select the appropriate frame before parsing |
| 481 | the expression, otherwise the value will not be current. |
| 482 | Since select_frame is so benign, just call it for all cases. */ |
| 483 | if (fi != NULL) |
| 484 | { |
| 485 | var->root->frame = get_frame_id (fi); |
| 486 | old_fi = deprecated_selected_frame; |
| 487 | select_frame (fi); |
| 488 | } |
| 489 | |
| 490 | /* We definitively need to catch errors here. |
| 491 | If evaluate_expression succeeds we got the value we wanted. |
| 492 | But if it fails, we still go on with a call to evaluate_type() */ |
| 493 | if (!gdb_evaluate_expression (var->root->exp, &value)) |
| 494 | /* Error getting the value. Try to at least get the |
| 495 | right type. */ |
| 496 | value = evaluate_type (var->root->exp); |
| 497 | |
| 498 | var->type = value_type (value); |
| 499 | install_new_value (var, value, 1 /* Initial assignment */); |
| 500 | |
| 501 | /* Set language info */ |
| 502 | lang = variable_language (var); |
| 503 | var->root->lang = &languages[lang]; |
| 504 | |
| 505 | /* Set ourselves as our root */ |
| 506 | var->root->rootvar = var; |
| 507 | |
| 508 | /* Reset the selected frame */ |
| 509 | if (fi != NULL) |
| 510 | select_frame (old_fi); |
| 511 | } |
| 512 | |
| 513 | /* If the variable object name is null, that means this |
| 514 | is a temporary variable, so don't install it. */ |
| 515 | |
| 516 | if ((var != NULL) && (objname != NULL)) |
| 517 | { |
| 518 | var->obj_name = savestring (objname, strlen (objname)); |
| 519 | |
| 520 | /* If a varobj name is duplicated, the install will fail so |
| 521 | we must clenup */ |
| 522 | if (!install_variable (var)) |
| 523 | { |
| 524 | do_cleanups (old_chain); |
| 525 | return NULL; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | discard_cleanups (old_chain); |
| 530 | return var; |
| 531 | } |
| 532 | |
| 533 | /* Generates an unique name that can be used for a varobj */ |
| 534 | |
| 535 | char * |
| 536 | varobj_gen_name (void) |
| 537 | { |
| 538 | static int id = 0; |
| 539 | char *obj_name; |
| 540 | |
| 541 | /* generate a name for this object */ |
| 542 | id++; |
| 543 | obj_name = xstrprintf ("var%d", id); |
| 544 | |
| 545 | return obj_name; |
| 546 | } |
| 547 | |
| 548 | /* Given an "objname", returns the pointer to the corresponding varobj |
| 549 | or NULL if not found */ |
| 550 | |
| 551 | struct varobj * |
| 552 | varobj_get_handle (char *objname) |
| 553 | { |
| 554 | struct vlist *cv; |
| 555 | const char *chp; |
| 556 | unsigned int index = 0; |
| 557 | unsigned int i = 1; |
| 558 | |
| 559 | for (chp = objname; *chp; chp++) |
| 560 | { |
| 561 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; |
| 562 | } |
| 563 | |
| 564 | cv = *(varobj_table + index); |
| 565 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) |
| 566 | cv = cv->next; |
| 567 | |
| 568 | if (cv == NULL) |
| 569 | error (_("Variable object not found")); |
| 570 | |
| 571 | return cv->var; |
| 572 | } |
| 573 | |
| 574 | /* Given the handle, return the name of the object */ |
| 575 | |
| 576 | char * |
| 577 | varobj_get_objname (struct varobj *var) |
| 578 | { |
| 579 | return var->obj_name; |
| 580 | } |
| 581 | |
| 582 | /* Given the handle, return the expression represented by the object */ |
| 583 | |
| 584 | char * |
| 585 | varobj_get_expression (struct varobj *var) |
| 586 | { |
| 587 | return name_of_variable (var); |
| 588 | } |
| 589 | |
| 590 | /* Deletes a varobj and all its children if only_children == 0, |
| 591 | otherwise deletes only the children; returns a malloc'ed list of all the |
| 592 | (malloc'ed) names of the variables that have been deleted (NULL terminated) */ |
| 593 | |
| 594 | int |
| 595 | varobj_delete (struct varobj *var, char ***dellist, int only_children) |
| 596 | { |
| 597 | int delcount; |
| 598 | int mycount; |
| 599 | struct cpstack *result = NULL; |
| 600 | char **cp; |
| 601 | |
| 602 | /* Initialize a stack for temporary results */ |
| 603 | cppush (&result, NULL); |
| 604 | |
| 605 | if (only_children) |
| 606 | /* Delete only the variable children */ |
| 607 | delcount = delete_variable (&result, var, 1 /* only the children */ ); |
| 608 | else |
| 609 | /* Delete the variable and all its children */ |
| 610 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); |
| 611 | |
| 612 | /* We may have been asked to return a list of what has been deleted */ |
| 613 | if (dellist != NULL) |
| 614 | { |
| 615 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); |
| 616 | |
| 617 | cp = *dellist; |
| 618 | mycount = delcount; |
| 619 | *cp = cppop (&result); |
| 620 | while ((*cp != NULL) && (mycount > 0)) |
| 621 | { |
| 622 | mycount--; |
| 623 | cp++; |
| 624 | *cp = cppop (&result); |
| 625 | } |
| 626 | |
| 627 | if (mycount || (*cp != NULL)) |
| 628 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
| 629 | mycount); |
| 630 | } |
| 631 | |
| 632 | return delcount; |
| 633 | } |
| 634 | |
| 635 | /* Set/Get variable object display format */ |
| 636 | |
| 637 | enum varobj_display_formats |
| 638 | varobj_set_display_format (struct varobj *var, |
| 639 | enum varobj_display_formats format) |
| 640 | { |
| 641 | switch (format) |
| 642 | { |
| 643 | case FORMAT_NATURAL: |
| 644 | case FORMAT_BINARY: |
| 645 | case FORMAT_DECIMAL: |
| 646 | case FORMAT_HEXADECIMAL: |
| 647 | case FORMAT_OCTAL: |
| 648 | var->format = format; |
| 649 | break; |
| 650 | |
| 651 | default: |
| 652 | var->format = variable_default_display (var); |
| 653 | } |
| 654 | |
| 655 | return var->format; |
| 656 | } |
| 657 | |
| 658 | enum varobj_display_formats |
| 659 | varobj_get_display_format (struct varobj *var) |
| 660 | { |
| 661 | return var->format; |
| 662 | } |
| 663 | |
| 664 | int |
| 665 | varobj_get_num_children (struct varobj *var) |
| 666 | { |
| 667 | if (var->num_children == -1) |
| 668 | var->num_children = number_of_children (var); |
| 669 | |
| 670 | return var->num_children; |
| 671 | } |
| 672 | |
| 673 | /* Creates a list of the immediate children of a variable object; |
| 674 | the return code is the number of such children or -1 on error */ |
| 675 | |
| 676 | int |
| 677 | varobj_list_children (struct varobj *var, struct varobj ***childlist) |
| 678 | { |
| 679 | struct varobj *child; |
| 680 | char *name; |
| 681 | int i; |
| 682 | |
| 683 | /* sanity check: have we been passed a pointer? */ |
| 684 | if (childlist == NULL) |
| 685 | return -1; |
| 686 | |
| 687 | *childlist = NULL; |
| 688 | |
| 689 | if (var->num_children == -1) |
| 690 | var->num_children = number_of_children (var); |
| 691 | |
| 692 | /* If that failed, give up. */ |
| 693 | if (var->num_children == -1) |
| 694 | return -1; |
| 695 | |
| 696 | /* If we're called when the list of children is not yet initialized, |
| 697 | allocate enough elements in it. */ |
| 698 | while (VEC_length (varobj_p, var->children) < var->num_children) |
| 699 | VEC_safe_push (varobj_p, var->children, NULL); |
| 700 | |
| 701 | /* List of children */ |
| 702 | *childlist = xmalloc ((var->num_children + 1) * sizeof (struct varobj *)); |
| 703 | |
| 704 | for (i = 0; i < var->num_children; i++) |
| 705 | { |
| 706 | varobj_p existing; |
| 707 | |
| 708 | /* Mark as the end in case we bail out */ |
| 709 | *((*childlist) + i) = NULL; |
| 710 | |
| 711 | existing = VEC_index (varobj_p, var->children, i); |
| 712 | |
| 713 | if (existing == NULL) |
| 714 | { |
| 715 | /* Either it's the first call to varobj_list_children for |
| 716 | this variable object, and the child was never created, |
| 717 | or it was explicitly deleted by the client. */ |
| 718 | name = name_of_child (var, i); |
| 719 | existing = create_child (var, i, name); |
| 720 | VEC_replace (varobj_p, var->children, i, existing); |
| 721 | } |
| 722 | |
| 723 | *((*childlist) + i) = existing; |
| 724 | } |
| 725 | |
| 726 | /* End of list is marked by a NULL pointer */ |
| 727 | *((*childlist) + i) = NULL; |
| 728 | |
| 729 | return var->num_children; |
| 730 | } |
| 731 | |
| 732 | /* Obtain the type of an object Variable as a string similar to the one gdb |
| 733 | prints on the console */ |
| 734 | |
| 735 | char * |
| 736 | varobj_get_type (struct varobj *var) |
| 737 | { |
| 738 | struct value *val; |
| 739 | struct cleanup *old_chain; |
| 740 | struct ui_file *stb; |
| 741 | char *thetype; |
| 742 | long length; |
| 743 | |
| 744 | /* For the "fake" variables, do not return a type. (It's type is |
| 745 | NULL, too.) */ |
| 746 | if (CPLUS_FAKE_CHILD (var)) |
| 747 | return NULL; |
| 748 | |
| 749 | stb = mem_fileopen (); |
| 750 | old_chain = make_cleanup_ui_file_delete (stb); |
| 751 | |
| 752 | /* To print the type, we simply create a zero ``struct value *'' and |
| 753 | cast it to our type. We then typeprint this variable. */ |
| 754 | val = value_zero (var->type, not_lval); |
| 755 | type_print (value_type (val), "", stb, -1); |
| 756 | |
| 757 | thetype = ui_file_xstrdup (stb, &length); |
| 758 | do_cleanups (old_chain); |
| 759 | return thetype; |
| 760 | } |
| 761 | |
| 762 | /* Obtain the type of an object variable. */ |
| 763 | |
| 764 | struct type * |
| 765 | varobj_get_gdb_type (struct varobj *var) |
| 766 | { |
| 767 | return var->type; |
| 768 | } |
| 769 | |
| 770 | enum varobj_languages |
| 771 | varobj_get_language (struct varobj *var) |
| 772 | { |
| 773 | return variable_language (var); |
| 774 | } |
| 775 | |
| 776 | int |
| 777 | varobj_get_attributes (struct varobj *var) |
| 778 | { |
| 779 | int attributes = 0; |
| 780 | |
| 781 | if (variable_editable (var)) |
| 782 | /* FIXME: define masks for attributes */ |
| 783 | attributes |= 0x00000001; /* Editable */ |
| 784 | |
| 785 | return attributes; |
| 786 | } |
| 787 | |
| 788 | char * |
| 789 | varobj_get_value (struct varobj *var) |
| 790 | { |
| 791 | return my_value_of_variable (var); |
| 792 | } |
| 793 | |
| 794 | /* Set the value of an object variable (if it is editable) to the |
| 795 | value of the given expression */ |
| 796 | /* Note: Invokes functions that can call error() */ |
| 797 | |
| 798 | int |
| 799 | varobj_set_value (struct varobj *var, char *expression) |
| 800 | { |
| 801 | struct value *val; |
| 802 | int offset = 0; |
| 803 | int error = 0; |
| 804 | |
| 805 | /* The argument "expression" contains the variable's new value. |
| 806 | We need to first construct a legal expression for this -- ugh! */ |
| 807 | /* Does this cover all the bases? */ |
| 808 | struct expression *exp; |
| 809 | struct value *value; |
| 810 | int saved_input_radix = input_radix; |
| 811 | |
| 812 | if (var->value != NULL && variable_editable (var)) |
| 813 | { |
| 814 | char *s = expression; |
| 815 | int i; |
| 816 | |
| 817 | input_radix = 10; /* ALWAYS reset to decimal temporarily */ |
| 818 | exp = parse_exp_1 (&s, 0, 0); |
| 819 | if (!gdb_evaluate_expression (exp, &value)) |
| 820 | { |
| 821 | /* We cannot proceed without a valid expression. */ |
| 822 | xfree (exp); |
| 823 | return 0; |
| 824 | } |
| 825 | |
| 826 | /* All types that are editable must also be changeable. */ |
| 827 | gdb_assert (varobj_value_is_changeable_p (var)); |
| 828 | |
| 829 | /* The value of a changeable variable object must not be lazy. */ |
| 830 | gdb_assert (!value_lazy (var->value)); |
| 831 | |
| 832 | /* Need to coerce the input. We want to check if the |
| 833 | value of the variable object will be different |
| 834 | after assignment, and the first thing value_assign |
| 835 | does is coerce the input. |
| 836 | For example, if we are assigning an array to a pointer variable we |
| 837 | should compare the pointer with the the array's address, not with the |
| 838 | array's content. */ |
| 839 | value = coerce_array (value); |
| 840 | |
| 841 | /* The new value may be lazy. gdb_value_assign, or |
| 842 | rather value_contents, will take care of this. |
| 843 | If fetching of the new value will fail, gdb_value_assign |
| 844 | with catch the exception. */ |
| 845 | if (!gdb_value_assign (var->value, value, &val)) |
| 846 | return 0; |
| 847 | |
| 848 | /* If the value has changed, record it, so that next -var-update can |
| 849 | report this change. If a variable had a value of '1', we've set it |
| 850 | to '333' and then set again to '1', when -var-update will report this |
| 851 | variable as changed -- because the first assignment has set the |
| 852 | 'updated' flag. There's no need to optimize that, because return value |
| 853 | of -var-update should be considered an approximation. */ |
| 854 | var->updated = install_new_value (var, val, 0 /* Compare values. */); |
| 855 | input_radix = saved_input_radix; |
| 856 | return 1; |
| 857 | } |
| 858 | |
| 859 | return 0; |
| 860 | } |
| 861 | |
| 862 | /* Returns a malloc'ed list with all root variable objects */ |
| 863 | int |
| 864 | varobj_list (struct varobj ***varlist) |
| 865 | { |
| 866 | struct varobj **cv; |
| 867 | struct varobj_root *croot; |
| 868 | int mycount = rootcount; |
| 869 | |
| 870 | /* Alloc (rootcount + 1) entries for the result */ |
| 871 | *varlist = xmalloc ((rootcount + 1) * sizeof (struct varobj *)); |
| 872 | |
| 873 | cv = *varlist; |
| 874 | croot = rootlist; |
| 875 | while ((croot != NULL) && (mycount > 0)) |
| 876 | { |
| 877 | *cv = croot->rootvar; |
| 878 | mycount--; |
| 879 | cv++; |
| 880 | croot = croot->next; |
| 881 | } |
| 882 | /* Mark the end of the list */ |
| 883 | *cv = NULL; |
| 884 | |
| 885 | if (mycount || (croot != NULL)) |
| 886 | warning |
| 887 | ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)", |
| 888 | rootcount, mycount); |
| 889 | |
| 890 | return rootcount; |
| 891 | } |
| 892 | |
| 893 | /* Assign a new value to a variable object. If INITIAL is non-zero, |
| 894 | this is the first assignement after the variable object was just |
| 895 | created, or changed type. In that case, just assign the value |
| 896 | and return 0. |
| 897 | Otherwise, assign the value and if type_changeable returns non-zero, |
| 898 | find if the new value is different from the current value. |
| 899 | Return 1 if so, and 0 if the values are equal. |
| 900 | |
| 901 | The VALUE parameter should not be released -- the function will |
| 902 | take care of releasing it when needed. */ |
| 903 | static int |
| 904 | install_new_value (struct varobj *var, struct value *value, int initial) |
| 905 | { |
| 906 | int changeable; |
| 907 | int need_to_fetch; |
| 908 | int changed = 0; |
| 909 | |
| 910 | /* We need to know the varobj's type to decide if the value should |
| 911 | be fetched or not. C++ fake children (public/protected/private) don't have |
| 912 | a type. */ |
| 913 | gdb_assert (var->type || CPLUS_FAKE_CHILD (var)); |
| 914 | changeable = varobj_value_is_changeable_p (var); |
| 915 | need_to_fetch = changeable; |
| 916 | |
| 917 | /* We are not interested in the address of references, and given |
| 918 | that in C++ a reference is not rebindable, it cannot |
| 919 | meaningfully change. So, get hold of the real value. */ |
| 920 | if (value) |
| 921 | { |
| 922 | value = coerce_ref (value); |
| 923 | release_value (value); |
| 924 | } |
| 925 | |
| 926 | if (var->type && TYPE_CODE (var->type) == TYPE_CODE_UNION) |
| 927 | /* For unions, we need to fetch the value implicitly because |
| 928 | of implementation of union member fetch. When gdb |
| 929 | creates a value for a field and the value of the enclosing |
| 930 | structure is not lazy, it immediately copies the necessary |
| 931 | bytes from the enclosing values. If the enclosing value is |
| 932 | lazy, the call to value_fetch_lazy on the field will read |
| 933 | the data from memory. For unions, that means we'll read the |
| 934 | same memory more than once, which is not desirable. So |
| 935 | fetch now. */ |
| 936 | need_to_fetch = 1; |
| 937 | |
| 938 | /* The new value might be lazy. If the type is changeable, |
| 939 | that is we'll be comparing values of this type, fetch the |
| 940 | value now. Otherwise, on the next update the old value |
| 941 | will be lazy, which means we've lost that old value. */ |
| 942 | if (need_to_fetch && value && value_lazy (value)) |
| 943 | { |
| 944 | if (!gdb_value_fetch_lazy (value)) |
| 945 | { |
| 946 | /* Set the value to NULL, so that for the next -var-update, |
| 947 | we don't try to compare the new value with this value, |
| 948 | that we couldn't even read. */ |
| 949 | value = NULL; |
| 950 | } |
| 951 | } |
| 952 | |
| 953 | /* If the type is changeable, compare the old and the new values. |
| 954 | If this is the initial assignment, we don't have any old value |
| 955 | to compare with. */ |
| 956 | if (initial && changeable) |
| 957 | var->print_value = value_get_print_value (value, var->format); |
| 958 | else if (changeable) |
| 959 | { |
| 960 | /* If the value of the varobj was changed by -var-set-value, then the |
| 961 | value in the varobj and in the target is the same. However, that value |
| 962 | is different from the value that the varobj had after the previous |
| 963 | -var-update. So need to the varobj as changed. */ |
| 964 | if (var->updated) |
| 965 | { |
| 966 | xfree (var->print_value); |
| 967 | var->print_value = value_get_print_value (value, var->format); |
| 968 | changed = 1; |
| 969 | } |
| 970 | else |
| 971 | { |
| 972 | /* Try to compare the values. That requires that both |
| 973 | values are non-lazy. */ |
| 974 | |
| 975 | /* Quick comparison of NULL values. */ |
| 976 | if (var->value == NULL && value == NULL) |
| 977 | /* Equal. */ |
| 978 | ; |
| 979 | else if (var->value == NULL || value == NULL) |
| 980 | { |
| 981 | xfree (var->print_value); |
| 982 | var->print_value = value_get_print_value (value, var->format); |
| 983 | changed = 1; |
| 984 | } |
| 985 | else |
| 986 | { |
| 987 | char *print_value; |
| 988 | gdb_assert (!value_lazy (var->value)); |
| 989 | gdb_assert (!value_lazy (value)); |
| 990 | print_value = value_get_print_value (value, var->format); |
| 991 | |
| 992 | gdb_assert (var->print_value != NULL && print_value != NULL); |
| 993 | if (strcmp (var->print_value, print_value) != 0) |
| 994 | { |
| 995 | xfree (var->print_value); |
| 996 | var->print_value = print_value; |
| 997 | changed = 1; |
| 998 | } |
| 999 | else |
| 1000 | xfree (print_value); |
| 1001 | } |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | /* We must always keep the new value, since children depend on it. */ |
| 1006 | if (var->value != NULL) |
| 1007 | value_free (var->value); |
| 1008 | var->value = value; |
| 1009 | var->updated = 0; |
| 1010 | |
| 1011 | gdb_assert (!var->value || value_type (var->value)); |
| 1012 | |
| 1013 | return changed; |
| 1014 | } |
| 1015 | |
| 1016 | /* Update the values for a variable and its children. This is a |
| 1017 | two-pronged attack. First, re-parse the value for the root's |
| 1018 | expression to see if it's changed. Then go all the way |
| 1019 | through its children, reconstructing them and noting if they've |
| 1020 | changed. |
| 1021 | Return value: |
| 1022 | -1 if there was an error updating the varobj |
| 1023 | -2 if the type changed |
| 1024 | Otherwise it is the number of children + parent changed |
| 1025 | |
| 1026 | Only root variables can be updated... |
| 1027 | |
| 1028 | NOTE: This function may delete the caller's varobj. If it |
| 1029 | returns -2, then it has done this and VARP will be modified |
| 1030 | to point to the new varobj. */ |
| 1031 | |
| 1032 | int |
| 1033 | varobj_update (struct varobj **varp, struct varobj ***changelist) |
| 1034 | { |
| 1035 | int changed = 0; |
| 1036 | int error = 0; |
| 1037 | int type_changed; |
| 1038 | int i; |
| 1039 | int vleft; |
| 1040 | struct varobj *v; |
| 1041 | struct varobj **cv; |
| 1042 | struct varobj **templist = NULL; |
| 1043 | struct value *new; |
| 1044 | VEC (varobj_p) *stack = NULL; |
| 1045 | VEC (varobj_p) *result = NULL; |
| 1046 | struct frame_id old_fid; |
| 1047 | struct frame_info *fi; |
| 1048 | |
| 1049 | /* sanity check: have we been passed a pointer? */ |
| 1050 | if (changelist == NULL) |
| 1051 | return -1; |
| 1052 | |
| 1053 | /* Only root variables can be updated... */ |
| 1054 | if (!is_root_p (*varp)) |
| 1055 | /* Not a root var */ |
| 1056 | return -1; |
| 1057 | |
| 1058 | /* Save the selected stack frame, since we will need to change it |
| 1059 | in order to evaluate expressions. */ |
| 1060 | old_fid = get_frame_id (deprecated_selected_frame); |
| 1061 | |
| 1062 | /* Update the root variable. value_of_root can return NULL |
| 1063 | if the variable is no longer around, i.e. we stepped out of |
| 1064 | the frame in which a local existed. We are letting the |
| 1065 | value_of_root variable dispose of the varobj if the type |
| 1066 | has changed. */ |
| 1067 | type_changed = 1; |
| 1068 | new = value_of_root (varp, &type_changed); |
| 1069 | |
| 1070 | /* Restore selected frame */ |
| 1071 | fi = frame_find_by_id (old_fid); |
| 1072 | if (fi) |
| 1073 | select_frame (fi); |
| 1074 | |
| 1075 | /* If this is a "use_selected_frame" varobj, and its type has changed, |
| 1076 | them note that it's changed. */ |
| 1077 | if (type_changed) |
| 1078 | VEC_safe_push (varobj_p, result, *varp); |
| 1079 | |
| 1080 | if (install_new_value ((*varp), new, type_changed)) |
| 1081 | { |
| 1082 | /* If type_changed is 1, install_new_value will never return |
| 1083 | non-zero, so we'll never report the same variable twice. */ |
| 1084 | gdb_assert (!type_changed); |
| 1085 | VEC_safe_push (varobj_p, result, *varp); |
| 1086 | } |
| 1087 | |
| 1088 | if (new == NULL) |
| 1089 | { |
| 1090 | /* This means the varobj itself is out of scope. |
| 1091 | Report it. */ |
| 1092 | VEC_free (varobj_p, result); |
| 1093 | return -1; |
| 1094 | } |
| 1095 | |
| 1096 | VEC_safe_push (varobj_p, stack, *varp); |
| 1097 | |
| 1098 | /* Walk through the children, reconstructing them all. */ |
| 1099 | while (!VEC_empty (varobj_p, stack)) |
| 1100 | { |
| 1101 | v = VEC_pop (varobj_p, stack); |
| 1102 | |
| 1103 | /* Push any children. Use reverse order so that the first |
| 1104 | child is popped from the work stack first, and so |
| 1105 | will be added to result first. This does not |
| 1106 | affect correctness, just "nicer". */ |
| 1107 | for (i = VEC_length (varobj_p, v->children)-1; i >= 0; --i) |
| 1108 | { |
| 1109 | varobj_p c = VEC_index (varobj_p, v->children, i); |
| 1110 | /* Child may be NULL if explicitly deleted by -var-delete. */ |
| 1111 | if (c != NULL) |
| 1112 | VEC_safe_push (varobj_p, stack, c); |
| 1113 | } |
| 1114 | |
| 1115 | /* Update this variable, unless it's a root, which is already |
| 1116 | updated. */ |
| 1117 | if (v != *varp) |
| 1118 | { |
| 1119 | new = value_of_child (v->parent, v->index); |
| 1120 | if (install_new_value (v, new, 0 /* type not changed */)) |
| 1121 | { |
| 1122 | /* Note that it's changed */ |
| 1123 | VEC_safe_push (varobj_p, result, v); |
| 1124 | v->updated = 0; |
| 1125 | } |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | /* Alloc (changed + 1) list entries */ |
| 1130 | changed = VEC_length (varobj_p, result); |
| 1131 | *changelist = xmalloc ((changed + 1) * sizeof (struct varobj *)); |
| 1132 | cv = *changelist; |
| 1133 | |
| 1134 | for (i = 0; i < changed; ++i) |
| 1135 | { |
| 1136 | *cv = VEC_index (varobj_p, result, i); |
| 1137 | gdb_assert (*cv != NULL); |
| 1138 | ++cv; |
| 1139 | } |
| 1140 | *cv = 0; |
| 1141 | |
| 1142 | if (type_changed) |
| 1143 | return -2; |
| 1144 | else |
| 1145 | return changed; |
| 1146 | } |
| 1147 | \f |
| 1148 | |
| 1149 | /* Helper functions */ |
| 1150 | |
| 1151 | /* |
| 1152 | * Variable object construction/destruction |
| 1153 | */ |
| 1154 | |
| 1155 | static int |
| 1156 | delete_variable (struct cpstack **resultp, struct varobj *var, |
| 1157 | int only_children_p) |
| 1158 | { |
| 1159 | int delcount = 0; |
| 1160 | |
| 1161 | delete_variable_1 (resultp, &delcount, var, |
| 1162 | only_children_p, 1 /* remove_from_parent_p */ ); |
| 1163 | |
| 1164 | return delcount; |
| 1165 | } |
| 1166 | |
| 1167 | /* Delete the variable object VAR and its children */ |
| 1168 | /* IMPORTANT NOTE: If we delete a variable which is a child |
| 1169 | and the parent is not removed we dump core. It must be always |
| 1170 | initially called with remove_from_parent_p set */ |
| 1171 | static void |
| 1172 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
| 1173 | struct varobj *var, int only_children_p, |
| 1174 | int remove_from_parent_p) |
| 1175 | { |
| 1176 | int i; |
| 1177 | |
| 1178 | /* Delete any children of this variable, too. */ |
| 1179 | for (i = 0; i < VEC_length (varobj_p, var->children); ++i) |
| 1180 | { |
| 1181 | varobj_p child = VEC_index (varobj_p, var->children, i); |
| 1182 | if (!remove_from_parent_p) |
| 1183 | child->parent = NULL; |
| 1184 | delete_variable_1 (resultp, delcountp, child, 0, only_children_p); |
| 1185 | } |
| 1186 | VEC_free (varobj_p, var->children); |
| 1187 | |
| 1188 | /* if we were called to delete only the children we are done here */ |
| 1189 | if (only_children_p) |
| 1190 | return; |
| 1191 | |
| 1192 | /* Otherwise, add it to the list of deleted ones and proceed to do so */ |
| 1193 | /* If the name is null, this is a temporary variable, that has not |
| 1194 | yet been installed, don't report it, it belongs to the caller... */ |
| 1195 | if (var->obj_name != NULL) |
| 1196 | { |
| 1197 | cppush (resultp, xstrdup (var->obj_name)); |
| 1198 | *delcountp = *delcountp + 1; |
| 1199 | } |
| 1200 | |
| 1201 | /* If this variable has a parent, remove it from its parent's list */ |
| 1202 | /* OPTIMIZATION: if the parent of this variable is also being deleted, |
| 1203 | (as indicated by remove_from_parent_p) we don't bother doing an |
| 1204 | expensive list search to find the element to remove when we are |
| 1205 | discarding the list afterwards */ |
| 1206 | if ((remove_from_parent_p) && (var->parent != NULL)) |
| 1207 | { |
| 1208 | VEC_replace (varobj_p, var->parent->children, var->index, NULL); |
| 1209 | } |
| 1210 | |
| 1211 | if (var->obj_name != NULL) |
| 1212 | uninstall_variable (var); |
| 1213 | |
| 1214 | /* Free memory associated with this variable */ |
| 1215 | free_variable (var); |
| 1216 | } |
| 1217 | |
| 1218 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ |
| 1219 | static int |
| 1220 | install_variable (struct varobj *var) |
| 1221 | { |
| 1222 | struct vlist *cv; |
| 1223 | struct vlist *newvl; |
| 1224 | const char *chp; |
| 1225 | unsigned int index = 0; |
| 1226 | unsigned int i = 1; |
| 1227 | |
| 1228 | for (chp = var->obj_name; *chp; chp++) |
| 1229 | { |
| 1230 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; |
| 1231 | } |
| 1232 | |
| 1233 | cv = *(varobj_table + index); |
| 1234 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) |
| 1235 | cv = cv->next; |
| 1236 | |
| 1237 | if (cv != NULL) |
| 1238 | error (_("Duplicate variable object name")); |
| 1239 | |
| 1240 | /* Add varobj to hash table */ |
| 1241 | newvl = xmalloc (sizeof (struct vlist)); |
| 1242 | newvl->next = *(varobj_table + index); |
| 1243 | newvl->var = var; |
| 1244 | *(varobj_table + index) = newvl; |
| 1245 | |
| 1246 | /* If root, add varobj to root list */ |
| 1247 | if (is_root_p (var)) |
| 1248 | { |
| 1249 | /* Add to list of root variables */ |
| 1250 | if (rootlist == NULL) |
| 1251 | var->root->next = NULL; |
| 1252 | else |
| 1253 | var->root->next = rootlist; |
| 1254 | rootlist = var->root; |
| 1255 | rootcount++; |
| 1256 | } |
| 1257 | |
| 1258 | return 1; /* OK */ |
| 1259 | } |
| 1260 | |
| 1261 | /* Unistall the object VAR. */ |
| 1262 | static void |
| 1263 | uninstall_variable (struct varobj *var) |
| 1264 | { |
| 1265 | struct vlist *cv; |
| 1266 | struct vlist *prev; |
| 1267 | struct varobj_root *cr; |
| 1268 | struct varobj_root *prer; |
| 1269 | const char *chp; |
| 1270 | unsigned int index = 0; |
| 1271 | unsigned int i = 1; |
| 1272 | |
| 1273 | /* Remove varobj from hash table */ |
| 1274 | for (chp = var->obj_name; *chp; chp++) |
| 1275 | { |
| 1276 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; |
| 1277 | } |
| 1278 | |
| 1279 | cv = *(varobj_table + index); |
| 1280 | prev = NULL; |
| 1281 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) |
| 1282 | { |
| 1283 | prev = cv; |
| 1284 | cv = cv->next; |
| 1285 | } |
| 1286 | |
| 1287 | if (varobjdebug) |
| 1288 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); |
| 1289 | |
| 1290 | if (cv == NULL) |
| 1291 | { |
| 1292 | warning |
| 1293 | ("Assertion failed: Could not find variable object \"%s\" to delete", |
| 1294 | var->obj_name); |
| 1295 | return; |
| 1296 | } |
| 1297 | |
| 1298 | if (prev == NULL) |
| 1299 | *(varobj_table + index) = cv->next; |
| 1300 | else |
| 1301 | prev->next = cv->next; |
| 1302 | |
| 1303 | xfree (cv); |
| 1304 | |
| 1305 | /* If root, remove varobj from root list */ |
| 1306 | if (is_root_p (var)) |
| 1307 | { |
| 1308 | /* Remove from list of root variables */ |
| 1309 | if (rootlist == var->root) |
| 1310 | rootlist = var->root->next; |
| 1311 | else |
| 1312 | { |
| 1313 | prer = NULL; |
| 1314 | cr = rootlist; |
| 1315 | while ((cr != NULL) && (cr->rootvar != var)) |
| 1316 | { |
| 1317 | prer = cr; |
| 1318 | cr = cr->next; |
| 1319 | } |
| 1320 | if (cr == NULL) |
| 1321 | { |
| 1322 | warning |
| 1323 | ("Assertion failed: Could not find varobj \"%s\" in root list", |
| 1324 | var->obj_name); |
| 1325 | return; |
| 1326 | } |
| 1327 | if (prer == NULL) |
| 1328 | rootlist = NULL; |
| 1329 | else |
| 1330 | prer->next = cr->next; |
| 1331 | } |
| 1332 | rootcount--; |
| 1333 | } |
| 1334 | |
| 1335 | } |
| 1336 | |
| 1337 | /* Create and install a child of the parent of the given name */ |
| 1338 | static struct varobj * |
| 1339 | create_child (struct varobj *parent, int index, char *name) |
| 1340 | { |
| 1341 | struct varobj *child; |
| 1342 | char *childs_name; |
| 1343 | struct value *value; |
| 1344 | |
| 1345 | child = new_variable (); |
| 1346 | |
| 1347 | /* name is allocated by name_of_child */ |
| 1348 | child->name = name; |
| 1349 | child->index = index; |
| 1350 | value = value_of_child (parent, index); |
| 1351 | child->parent = parent; |
| 1352 | child->root = parent->root; |
| 1353 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); |
| 1354 | child->obj_name = childs_name; |
| 1355 | install_variable (child); |
| 1356 | |
| 1357 | /* Compute the type of the child. Must do this before |
| 1358 | calling install_new_value. */ |
| 1359 | if (value != NULL) |
| 1360 | /* If the child had no evaluation errors, var->value |
| 1361 | will be non-NULL and contain a valid type. */ |
| 1362 | child->type = value_type (value); |
| 1363 | else |
| 1364 | /* Otherwise, we must compute the type. */ |
| 1365 | child->type = (*child->root->lang->type_of_child) (child->parent, |
| 1366 | child->index); |
| 1367 | install_new_value (child, value, 1); |
| 1368 | |
| 1369 | return child; |
| 1370 | } |
| 1371 | \f |
| 1372 | |
| 1373 | /* |
| 1374 | * Miscellaneous utility functions. |
| 1375 | */ |
| 1376 | |
| 1377 | /* Allocate memory and initialize a new variable */ |
| 1378 | static struct varobj * |
| 1379 | new_variable (void) |
| 1380 | { |
| 1381 | struct varobj *var; |
| 1382 | |
| 1383 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); |
| 1384 | var->name = NULL; |
| 1385 | var->obj_name = NULL; |
| 1386 | var->index = -1; |
| 1387 | var->type = NULL; |
| 1388 | var->value = NULL; |
| 1389 | var->num_children = -1; |
| 1390 | var->parent = NULL; |
| 1391 | var->children = NULL; |
| 1392 | var->format = 0; |
| 1393 | var->root = NULL; |
| 1394 | var->updated = 0; |
| 1395 | var->print_value = NULL; |
| 1396 | |
| 1397 | return var; |
| 1398 | } |
| 1399 | |
| 1400 | /* Allocate memory and initialize a new root variable */ |
| 1401 | static struct varobj * |
| 1402 | new_root_variable (void) |
| 1403 | { |
| 1404 | struct varobj *var = new_variable (); |
| 1405 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));; |
| 1406 | var->root->lang = NULL; |
| 1407 | var->root->exp = NULL; |
| 1408 | var->root->valid_block = NULL; |
| 1409 | var->root->frame = null_frame_id; |
| 1410 | var->root->use_selected_frame = 0; |
| 1411 | var->root->rootvar = NULL; |
| 1412 | |
| 1413 | return var; |
| 1414 | } |
| 1415 | |
| 1416 | /* Free any allocated memory associated with VAR. */ |
| 1417 | static void |
| 1418 | free_variable (struct varobj *var) |
| 1419 | { |
| 1420 | /* Free the expression if this is a root variable. */ |
| 1421 | if (is_root_p (var)) |
| 1422 | { |
| 1423 | free_current_contents (&var->root->exp); |
| 1424 | xfree (var->root); |
| 1425 | } |
| 1426 | |
| 1427 | xfree (var->name); |
| 1428 | xfree (var->obj_name); |
| 1429 | xfree (var->print_value); |
| 1430 | xfree (var); |
| 1431 | } |
| 1432 | |
| 1433 | static void |
| 1434 | do_free_variable_cleanup (void *var) |
| 1435 | { |
| 1436 | free_variable (var); |
| 1437 | } |
| 1438 | |
| 1439 | static struct cleanup * |
| 1440 | make_cleanup_free_variable (struct varobj *var) |
| 1441 | { |
| 1442 | return make_cleanup (do_free_variable_cleanup, var); |
| 1443 | } |
| 1444 | |
| 1445 | /* This returns the type of the variable. It also skips past typedefs |
| 1446 | to return the real type of the variable. |
| 1447 | |
| 1448 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file |
| 1449 | except within get_target_type and get_type. */ |
| 1450 | static struct type * |
| 1451 | get_type (struct varobj *var) |
| 1452 | { |
| 1453 | struct type *type; |
| 1454 | type = var->type; |
| 1455 | |
| 1456 | if (type != NULL) |
| 1457 | type = check_typedef (type); |
| 1458 | |
| 1459 | return type; |
| 1460 | } |
| 1461 | |
| 1462 | /* Return the type of the value that's stored in VAR, |
| 1463 | or that would have being stored there if the |
| 1464 | value were accessible. |
| 1465 | |
| 1466 | This differs from VAR->type in that VAR->type is always |
| 1467 | the true type of the expession in the source language. |
| 1468 | The return value of this function is the type we're |
| 1469 | actually storing in varobj, and using for displaying |
| 1470 | the values and for comparing previous and new values. |
| 1471 | |
| 1472 | For example, top-level references are always stripped. */ |
| 1473 | static struct type * |
| 1474 | get_value_type (struct varobj *var) |
| 1475 | { |
| 1476 | struct type *type; |
| 1477 | |
| 1478 | if (var->value) |
| 1479 | type = value_type (var->value); |
| 1480 | else |
| 1481 | type = var->type; |
| 1482 | |
| 1483 | type = check_typedef (type); |
| 1484 | |
| 1485 | if (TYPE_CODE (type) == TYPE_CODE_REF) |
| 1486 | type = get_target_type (type); |
| 1487 | |
| 1488 | type = check_typedef (type); |
| 1489 | |
| 1490 | return type; |
| 1491 | } |
| 1492 | |
| 1493 | /* This returns the target type (or NULL) of TYPE, also skipping |
| 1494 | past typedefs, just like get_type (). |
| 1495 | |
| 1496 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file |
| 1497 | except within get_target_type and get_type. */ |
| 1498 | static struct type * |
| 1499 | get_target_type (struct type *type) |
| 1500 | { |
| 1501 | if (type != NULL) |
| 1502 | { |
| 1503 | type = TYPE_TARGET_TYPE (type); |
| 1504 | if (type != NULL) |
| 1505 | type = check_typedef (type); |
| 1506 | } |
| 1507 | |
| 1508 | return type; |
| 1509 | } |
| 1510 | |
| 1511 | /* What is the default display for this variable? We assume that |
| 1512 | everything is "natural". Any exceptions? */ |
| 1513 | static enum varobj_display_formats |
| 1514 | variable_default_display (struct varobj *var) |
| 1515 | { |
| 1516 | return FORMAT_NATURAL; |
| 1517 | } |
| 1518 | |
| 1519 | /* FIXME: The following should be generic for any pointer */ |
| 1520 | static void |
| 1521 | cppush (struct cpstack **pstack, char *name) |
| 1522 | { |
| 1523 | struct cpstack *s; |
| 1524 | |
| 1525 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); |
| 1526 | s->name = name; |
| 1527 | s->next = *pstack; |
| 1528 | *pstack = s; |
| 1529 | } |
| 1530 | |
| 1531 | /* FIXME: The following should be generic for any pointer */ |
| 1532 | static char * |
| 1533 | cppop (struct cpstack **pstack) |
| 1534 | { |
| 1535 | struct cpstack *s; |
| 1536 | char *v; |
| 1537 | |
| 1538 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) |
| 1539 | return NULL; |
| 1540 | |
| 1541 | s = *pstack; |
| 1542 | v = s->name; |
| 1543 | *pstack = (*pstack)->next; |
| 1544 | xfree (s); |
| 1545 | |
| 1546 | return v; |
| 1547 | } |
| 1548 | \f |
| 1549 | /* |
| 1550 | * Language-dependencies |
| 1551 | */ |
| 1552 | |
| 1553 | /* Common entry points */ |
| 1554 | |
| 1555 | /* Get the language of variable VAR. */ |
| 1556 | static enum varobj_languages |
| 1557 | variable_language (struct varobj *var) |
| 1558 | { |
| 1559 | enum varobj_languages lang; |
| 1560 | |
| 1561 | switch (var->root->exp->language_defn->la_language) |
| 1562 | { |
| 1563 | default: |
| 1564 | case language_c: |
| 1565 | lang = vlang_c; |
| 1566 | break; |
| 1567 | case language_cplus: |
| 1568 | lang = vlang_cplus; |
| 1569 | break; |
| 1570 | case language_java: |
| 1571 | lang = vlang_java; |
| 1572 | break; |
| 1573 | } |
| 1574 | |
| 1575 | return lang; |
| 1576 | } |
| 1577 | |
| 1578 | /* Return the number of children for a given variable. |
| 1579 | The result of this function is defined by the language |
| 1580 | implementation. The number of children returned by this function |
| 1581 | is the number of children that the user will see in the variable |
| 1582 | display. */ |
| 1583 | static int |
| 1584 | number_of_children (struct varobj *var) |
| 1585 | { |
| 1586 | return (*var->root->lang->number_of_children) (var);; |
| 1587 | } |
| 1588 | |
| 1589 | /* What is the expression for the root varobj VAR? Returns a malloc'd string. */ |
| 1590 | static char * |
| 1591 | name_of_variable (struct varobj *var) |
| 1592 | { |
| 1593 | return (*var->root->lang->name_of_variable) (var); |
| 1594 | } |
| 1595 | |
| 1596 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */ |
| 1597 | static char * |
| 1598 | name_of_child (struct varobj *var, int index) |
| 1599 | { |
| 1600 | return (*var->root->lang->name_of_child) (var, index); |
| 1601 | } |
| 1602 | |
| 1603 | /* What is the ``struct value *'' of the root variable VAR? |
| 1604 | TYPE_CHANGED controls what to do if the type of a |
| 1605 | use_selected_frame = 1 variable changes. On input, |
| 1606 | TYPE_CHANGED = 1 means discard the old varobj, and replace |
| 1607 | it with this one. TYPE_CHANGED = 0 means leave it around. |
| 1608 | NB: In both cases, var_handle will point to the new varobj, |
| 1609 | so if you use TYPE_CHANGED = 0, you will have to stash the |
| 1610 | old varobj pointer away somewhere before calling this. |
| 1611 | On return, TYPE_CHANGED will be 1 if the type has changed, and |
| 1612 | 0 otherwise. */ |
| 1613 | static struct value * |
| 1614 | value_of_root (struct varobj **var_handle, int *type_changed) |
| 1615 | { |
| 1616 | struct varobj *var; |
| 1617 | |
| 1618 | if (var_handle == NULL) |
| 1619 | return NULL; |
| 1620 | |
| 1621 | var = *var_handle; |
| 1622 | |
| 1623 | /* This should really be an exception, since this should |
| 1624 | only get called with a root variable. */ |
| 1625 | |
| 1626 | if (!is_root_p (var)) |
| 1627 | return NULL; |
| 1628 | |
| 1629 | if (var->root->use_selected_frame) |
| 1630 | { |
| 1631 | struct varobj *tmp_var; |
| 1632 | char *old_type, *new_type; |
| 1633 | old_type = varobj_get_type (var); |
| 1634 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, |
| 1635 | USE_SELECTED_FRAME); |
| 1636 | if (tmp_var == NULL) |
| 1637 | { |
| 1638 | return NULL; |
| 1639 | } |
| 1640 | new_type = varobj_get_type (tmp_var); |
| 1641 | if (strcmp (old_type, new_type) == 0) |
| 1642 | { |
| 1643 | varobj_delete (tmp_var, NULL, 0); |
| 1644 | *type_changed = 0; |
| 1645 | } |
| 1646 | else |
| 1647 | { |
| 1648 | if (*type_changed) |
| 1649 | { |
| 1650 | tmp_var->obj_name = |
| 1651 | savestring (var->obj_name, strlen (var->obj_name)); |
| 1652 | varobj_delete (var, NULL, 0); |
| 1653 | } |
| 1654 | else |
| 1655 | { |
| 1656 | tmp_var->obj_name = varobj_gen_name (); |
| 1657 | } |
| 1658 | install_variable (tmp_var); |
| 1659 | *var_handle = tmp_var; |
| 1660 | var = *var_handle; |
| 1661 | *type_changed = 1; |
| 1662 | } |
| 1663 | } |
| 1664 | else |
| 1665 | { |
| 1666 | *type_changed = 0; |
| 1667 | } |
| 1668 | |
| 1669 | return (*var->root->lang->value_of_root) (var_handle); |
| 1670 | } |
| 1671 | |
| 1672 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
| 1673 | static struct value * |
| 1674 | value_of_child (struct varobj *parent, int index) |
| 1675 | { |
| 1676 | struct value *value; |
| 1677 | |
| 1678 | value = (*parent->root->lang->value_of_child) (parent, index); |
| 1679 | |
| 1680 | return value; |
| 1681 | } |
| 1682 | |
| 1683 | /* Is this variable editable? Use the variable's type to make |
| 1684 | this determination. */ |
| 1685 | static int |
| 1686 | variable_editable (struct varobj *var) |
| 1687 | { |
| 1688 | return (*var->root->lang->variable_editable) (var); |
| 1689 | } |
| 1690 | |
| 1691 | /* GDB already has a command called "value_of_variable". Sigh. */ |
| 1692 | static char * |
| 1693 | my_value_of_variable (struct varobj *var) |
| 1694 | { |
| 1695 | return (*var->root->lang->value_of_variable) (var); |
| 1696 | } |
| 1697 | |
| 1698 | static char * |
| 1699 | value_get_print_value (struct value *value, enum varobj_display_formats format) |
| 1700 | { |
| 1701 | long dummy; |
| 1702 | struct ui_file *stb; |
| 1703 | struct cleanup *old_chain; |
| 1704 | char *thevalue; |
| 1705 | |
| 1706 | if (value == NULL) |
| 1707 | return NULL; |
| 1708 | |
| 1709 | stb = mem_fileopen (); |
| 1710 | old_chain = make_cleanup_ui_file_delete (stb); |
| 1711 | |
| 1712 | common_val_print (value, stb, format_code[(int) format], 1, 0, 0); |
| 1713 | thevalue = ui_file_xstrdup (stb, &dummy); |
| 1714 | |
| 1715 | do_cleanups (old_chain); |
| 1716 | return thevalue; |
| 1717 | } |
| 1718 | |
| 1719 | /* Return non-zero if changes in value of VAR |
| 1720 | must be detected and reported by -var-update. |
| 1721 | Return zero is -var-update should never report |
| 1722 | changes of such values. This makes sense for structures |
| 1723 | (since the changes in children values will be reported separately), |
| 1724 | or for artifical objects (like 'public' pseudo-field in C++). |
| 1725 | |
| 1726 | Return value of 0 means that gdb need not call value_fetch_lazy |
| 1727 | for the value of this variable object. */ |
| 1728 | static int |
| 1729 | varobj_value_is_changeable_p (struct varobj *var) |
| 1730 | { |
| 1731 | int r; |
| 1732 | struct type *type; |
| 1733 | |
| 1734 | if (CPLUS_FAKE_CHILD (var)) |
| 1735 | return 0; |
| 1736 | |
| 1737 | type = get_value_type (var); |
| 1738 | |
| 1739 | switch (TYPE_CODE (type)) |
| 1740 | { |
| 1741 | case TYPE_CODE_STRUCT: |
| 1742 | case TYPE_CODE_UNION: |
| 1743 | case TYPE_CODE_ARRAY: |
| 1744 | r = 0; |
| 1745 | break; |
| 1746 | |
| 1747 | default: |
| 1748 | r = 1; |
| 1749 | } |
| 1750 | |
| 1751 | return r; |
| 1752 | } |
| 1753 | |
| 1754 | /* Given the value and the type of a variable object, |
| 1755 | adjust the value and type to those necessary |
| 1756 | for getting children of the variable object. |
| 1757 | This includes dereferencing top-level references |
| 1758 | to all types and dereferencing pointers to |
| 1759 | structures. |
| 1760 | |
| 1761 | Both TYPE and *TYPE should be non-null. VALUE |
| 1762 | can be null if we want to only translate type. |
| 1763 | *VALUE can be null as well -- if the parent |
| 1764 | value is not known. */ |
| 1765 | static void |
| 1766 | adjust_value_for_child_access (struct value **value, |
| 1767 | struct type **type) |
| 1768 | { |
| 1769 | gdb_assert (type && *type); |
| 1770 | |
| 1771 | *type = check_typedef (*type); |
| 1772 | |
| 1773 | /* The type of value stored in varobj, that is passed |
| 1774 | to us, is already supposed to be |
| 1775 | reference-stripped. */ |
| 1776 | |
| 1777 | gdb_assert (TYPE_CODE (*type) != TYPE_CODE_REF); |
| 1778 | |
| 1779 | /* Pointers to structures are treated just like |
| 1780 | structures when accessing children. Don't |
| 1781 | dererences pointers to other types. */ |
| 1782 | if (TYPE_CODE (*type) == TYPE_CODE_PTR) |
| 1783 | { |
| 1784 | struct type *target_type = get_target_type (*type); |
| 1785 | if (TYPE_CODE (target_type) == TYPE_CODE_STRUCT |
| 1786 | || TYPE_CODE (target_type) == TYPE_CODE_UNION) |
| 1787 | { |
| 1788 | if (value && *value) |
| 1789 | gdb_value_ind (*value, value); |
| 1790 | *type = target_type; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | /* The 'get_target_type' function calls check_typedef on |
| 1795 | result, so we can immediately check type code. No |
| 1796 | need to call check_typedef here. */ |
| 1797 | } |
| 1798 | |
| 1799 | /* C */ |
| 1800 | static int |
| 1801 | c_number_of_children (struct varobj *var) |
| 1802 | { |
| 1803 | struct type *type = get_value_type (var); |
| 1804 | int children = 0; |
| 1805 | struct type *target; |
| 1806 | |
| 1807 | adjust_value_for_child_access (NULL, &type); |
| 1808 | target = get_target_type (type); |
| 1809 | |
| 1810 | switch (TYPE_CODE (type)) |
| 1811 | { |
| 1812 | case TYPE_CODE_ARRAY: |
| 1813 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 |
| 1814 | && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED) |
| 1815 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
| 1816 | else |
| 1817 | /* If we don't know how many elements there are, don't display |
| 1818 | any. */ |
| 1819 | children = 0; |
| 1820 | break; |
| 1821 | |
| 1822 | case TYPE_CODE_STRUCT: |
| 1823 | case TYPE_CODE_UNION: |
| 1824 | children = TYPE_NFIELDS (type); |
| 1825 | break; |
| 1826 | |
| 1827 | case TYPE_CODE_PTR: |
| 1828 | /* The type here is a pointer to non-struct. Typically, pointers |
| 1829 | have one child, except for function ptrs, which have no children, |
| 1830 | and except for void*, as we don't know what to show. |
| 1831 | |
| 1832 | We can show char* so we allow it to be dereferenced. If you decide |
| 1833 | to test for it, please mind that a little magic is necessary to |
| 1834 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and |
| 1835 | TYPE_NAME == "char" */ |
| 1836 | if (TYPE_CODE (target) == TYPE_CODE_FUNC |
| 1837 | || TYPE_CODE (target) == TYPE_CODE_VOID) |
| 1838 | children = 0; |
| 1839 | else |
| 1840 | children = 1; |
| 1841 | break; |
| 1842 | |
| 1843 | default: |
| 1844 | /* Other types have no children */ |
| 1845 | break; |
| 1846 | } |
| 1847 | |
| 1848 | return children; |
| 1849 | } |
| 1850 | |
| 1851 | static char * |
| 1852 | c_name_of_variable (struct varobj *parent) |
| 1853 | { |
| 1854 | return savestring (parent->name, strlen (parent->name)); |
| 1855 | } |
| 1856 | |
| 1857 | /* Return the value of element TYPE_INDEX of a structure |
| 1858 | value VALUE. VALUE's type should be a structure, |
| 1859 | or union, or a typedef to struct/union. |
| 1860 | |
| 1861 | Returns NULL if getting the value fails. Never throws. */ |
| 1862 | static struct value * |
| 1863 | value_struct_element_index (struct value *value, int type_index) |
| 1864 | { |
| 1865 | struct value *result = NULL; |
| 1866 | volatile struct gdb_exception e; |
| 1867 | |
| 1868 | struct type *type = value_type (value); |
| 1869 | type = check_typedef (type); |
| 1870 | |
| 1871 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1872 | || TYPE_CODE (type) == TYPE_CODE_UNION); |
| 1873 | |
| 1874 | TRY_CATCH (e, RETURN_MASK_ERROR) |
| 1875 | { |
| 1876 | if (TYPE_FIELD_STATIC (type, type_index)) |
| 1877 | result = value_static_field (type, type_index); |
| 1878 | else |
| 1879 | result = value_primitive_field (value, 0, type_index, type); |
| 1880 | } |
| 1881 | if (e.reason < 0) |
| 1882 | { |
| 1883 | return NULL; |
| 1884 | } |
| 1885 | else |
| 1886 | { |
| 1887 | return result; |
| 1888 | } |
| 1889 | } |
| 1890 | |
| 1891 | /* Obtain the information about child INDEX of the variable |
| 1892 | object PARENT. |
| 1893 | If CNAME is not null, sets *CNAME to the name of the child relative |
| 1894 | to the parent. |
| 1895 | If CVALUE is not null, sets *CVALUE to the value of the child. |
| 1896 | If CTYPE is not null, sets *CTYPE to the type of the child. |
| 1897 | |
| 1898 | If any of CNAME, CVALUE, or CTYPE is not null, but the corresponding |
| 1899 | information cannot be determined, set *CNAME, *CVALUE, or *CTYPE |
| 1900 | to NULL. */ |
| 1901 | static void |
| 1902 | c_describe_child (struct varobj *parent, int index, |
| 1903 | char **cname, struct value **cvalue, struct type **ctype) |
| 1904 | { |
| 1905 | struct value *value = parent->value; |
| 1906 | struct type *type = get_value_type (parent); |
| 1907 | |
| 1908 | if (cname) |
| 1909 | *cname = NULL; |
| 1910 | if (cvalue) |
| 1911 | *cvalue = NULL; |
| 1912 | if (ctype) |
| 1913 | *ctype = NULL; |
| 1914 | |
| 1915 | adjust_value_for_child_access (&value, &type); |
| 1916 | |
| 1917 | switch (TYPE_CODE (type)) |
| 1918 | { |
| 1919 | case TYPE_CODE_ARRAY: |
| 1920 | if (cname) |
| 1921 | *cname = xstrprintf ("%d", index |
| 1922 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))); |
| 1923 | |
| 1924 | if (cvalue && value) |
| 1925 | { |
| 1926 | int real_index = index + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)); |
| 1927 | struct value *indval = |
| 1928 | value_from_longest (builtin_type_int, (LONGEST) real_index); |
| 1929 | gdb_value_subscript (value, indval, cvalue); |
| 1930 | } |
| 1931 | |
| 1932 | if (ctype) |
| 1933 | *ctype = get_target_type (type); |
| 1934 | |
| 1935 | break; |
| 1936 | |
| 1937 | case TYPE_CODE_STRUCT: |
| 1938 | case TYPE_CODE_UNION: |
| 1939 | if (cname) |
| 1940 | { |
| 1941 | char *string = TYPE_FIELD_NAME (type, index); |
| 1942 | *cname = savestring (string, strlen (string)); |
| 1943 | } |
| 1944 | |
| 1945 | if (cvalue && value) |
| 1946 | { |
| 1947 | /* For C, varobj index is the same as type index. */ |
| 1948 | *cvalue = value_struct_element_index (value, index); |
| 1949 | } |
| 1950 | |
| 1951 | if (ctype) |
| 1952 | *ctype = TYPE_FIELD_TYPE (type, index); |
| 1953 | |
| 1954 | break; |
| 1955 | |
| 1956 | case TYPE_CODE_PTR: |
| 1957 | if (cname) |
| 1958 | *cname = xstrprintf ("*%s", parent->name); |
| 1959 | |
| 1960 | if (cvalue && value) |
| 1961 | gdb_value_ind (value, cvalue); |
| 1962 | |
| 1963 | /* Don't use get_target_type because it calls |
| 1964 | check_typedef and here, we want to show the true |
| 1965 | declared type of the variable. */ |
| 1966 | if (ctype) |
| 1967 | *ctype = TYPE_TARGET_TYPE (type); |
| 1968 | |
| 1969 | break; |
| 1970 | |
| 1971 | default: |
| 1972 | /* This should not happen */ |
| 1973 | if (cname) |
| 1974 | *cname = xstrdup ("???"); |
| 1975 | /* Don't set value and type, we don't know then. */ |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | static char * |
| 1980 | c_name_of_child (struct varobj *parent, int index) |
| 1981 | { |
| 1982 | char *name; |
| 1983 | c_describe_child (parent, index, &name, NULL, NULL); |
| 1984 | return name; |
| 1985 | } |
| 1986 | |
| 1987 | static struct value * |
| 1988 | c_value_of_root (struct varobj **var_handle) |
| 1989 | { |
| 1990 | struct value *new_val = NULL; |
| 1991 | struct varobj *var = *var_handle; |
| 1992 | struct frame_info *fi; |
| 1993 | int within_scope; |
| 1994 | |
| 1995 | /* Only root variables can be updated... */ |
| 1996 | if (!is_root_p (var)) |
| 1997 | /* Not a root var */ |
| 1998 | return NULL; |
| 1999 | |
| 2000 | |
| 2001 | /* Determine whether the variable is still around. */ |
| 2002 | if (var->root->valid_block == NULL || var->root->use_selected_frame) |
| 2003 | within_scope = 1; |
| 2004 | else |
| 2005 | { |
| 2006 | fi = frame_find_by_id (var->root->frame); |
| 2007 | within_scope = fi != NULL; |
| 2008 | /* FIXME: select_frame could fail */ |
| 2009 | if (fi) |
| 2010 | { |
| 2011 | CORE_ADDR pc = get_frame_pc (fi); |
| 2012 | if (pc < BLOCK_START (var->root->valid_block) || |
| 2013 | pc >= BLOCK_END (var->root->valid_block)) |
| 2014 | within_scope = 0; |
| 2015 | else |
| 2016 | select_frame (fi); |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | if (within_scope) |
| 2021 | { |
| 2022 | /* We need to catch errors here, because if evaluate |
| 2023 | expression fails we want to just return NULL. */ |
| 2024 | gdb_evaluate_expression (var->root->exp, &new_val); |
| 2025 | return new_val; |
| 2026 | } |
| 2027 | |
| 2028 | return NULL; |
| 2029 | } |
| 2030 | |
| 2031 | static struct value * |
| 2032 | c_value_of_child (struct varobj *parent, int index) |
| 2033 | { |
| 2034 | struct value *value = NULL; |
| 2035 | c_describe_child (parent, index, NULL, &value, NULL); |
| 2036 | |
| 2037 | return value; |
| 2038 | } |
| 2039 | |
| 2040 | static struct type * |
| 2041 | c_type_of_child (struct varobj *parent, int index) |
| 2042 | { |
| 2043 | struct type *type = NULL; |
| 2044 | c_describe_child (parent, index, NULL, NULL, &type); |
| 2045 | return type; |
| 2046 | } |
| 2047 | |
| 2048 | static int |
| 2049 | c_variable_editable (struct varobj *var) |
| 2050 | { |
| 2051 | switch (TYPE_CODE (get_value_type (var))) |
| 2052 | { |
| 2053 | case TYPE_CODE_STRUCT: |
| 2054 | case TYPE_CODE_UNION: |
| 2055 | case TYPE_CODE_ARRAY: |
| 2056 | case TYPE_CODE_FUNC: |
| 2057 | case TYPE_CODE_METHOD: |
| 2058 | return 0; |
| 2059 | break; |
| 2060 | |
| 2061 | default: |
| 2062 | return 1; |
| 2063 | break; |
| 2064 | } |
| 2065 | } |
| 2066 | |
| 2067 | static char * |
| 2068 | c_value_of_variable (struct varobj *var) |
| 2069 | { |
| 2070 | /* BOGUS: if val_print sees a struct/class, or a reference to one, |
| 2071 | it will print out its children instead of "{...}". So we need to |
| 2072 | catch that case explicitly. */ |
| 2073 | struct type *type = get_type (var); |
| 2074 | |
| 2075 | /* Strip top-level references. */ |
| 2076 | while (TYPE_CODE (type) == TYPE_CODE_REF) |
| 2077 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 2078 | |
| 2079 | switch (TYPE_CODE (type)) |
| 2080 | { |
| 2081 | case TYPE_CODE_STRUCT: |
| 2082 | case TYPE_CODE_UNION: |
| 2083 | return xstrdup ("{...}"); |
| 2084 | /* break; */ |
| 2085 | |
| 2086 | case TYPE_CODE_ARRAY: |
| 2087 | { |
| 2088 | char *number; |
| 2089 | number = xstrprintf ("[%d]", var->num_children); |
| 2090 | return (number); |
| 2091 | } |
| 2092 | /* break; */ |
| 2093 | |
| 2094 | default: |
| 2095 | { |
| 2096 | if (var->value == NULL) |
| 2097 | { |
| 2098 | /* This can happen if we attempt to get the value of a struct |
| 2099 | member when the parent is an invalid pointer. This is an |
| 2100 | error condition, so we should tell the caller. */ |
| 2101 | return NULL; |
| 2102 | } |
| 2103 | else |
| 2104 | { |
| 2105 | gdb_assert (varobj_value_is_changeable_p (var)); |
| 2106 | gdb_assert (!value_lazy (var->value)); |
| 2107 | return value_get_print_value (var->value, var->format); |
| 2108 | } |
| 2109 | } |
| 2110 | } |
| 2111 | } |
| 2112 | \f |
| 2113 | |
| 2114 | /* C++ */ |
| 2115 | |
| 2116 | static int |
| 2117 | cplus_number_of_children (struct varobj *var) |
| 2118 | { |
| 2119 | struct type *type; |
| 2120 | int children, dont_know; |
| 2121 | |
| 2122 | dont_know = 1; |
| 2123 | children = 0; |
| 2124 | |
| 2125 | if (!CPLUS_FAKE_CHILD (var)) |
| 2126 | { |
| 2127 | type = get_value_type (var); |
| 2128 | adjust_value_for_child_access (NULL, &type); |
| 2129 | |
| 2130 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || |
| 2131 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
| 2132 | { |
| 2133 | int kids[3]; |
| 2134 | |
| 2135 | cplus_class_num_children (type, kids); |
| 2136 | if (kids[v_public] != 0) |
| 2137 | children++; |
| 2138 | if (kids[v_private] != 0) |
| 2139 | children++; |
| 2140 | if (kids[v_protected] != 0) |
| 2141 | children++; |
| 2142 | |
| 2143 | /* Add any baseclasses */ |
| 2144 | children += TYPE_N_BASECLASSES (type); |
| 2145 | dont_know = 0; |
| 2146 | |
| 2147 | /* FIXME: save children in var */ |
| 2148 | } |
| 2149 | } |
| 2150 | else |
| 2151 | { |
| 2152 | int kids[3]; |
| 2153 | |
| 2154 | type = get_value_type (var->parent); |
| 2155 | adjust_value_for_child_access (NULL, &type); |
| 2156 | |
| 2157 | cplus_class_num_children (type, kids); |
| 2158 | if (strcmp (var->name, "public") == 0) |
| 2159 | children = kids[v_public]; |
| 2160 | else if (strcmp (var->name, "private") == 0) |
| 2161 | children = kids[v_private]; |
| 2162 | else |
| 2163 | children = kids[v_protected]; |
| 2164 | dont_know = 0; |
| 2165 | } |
| 2166 | |
| 2167 | if (dont_know) |
| 2168 | children = c_number_of_children (var); |
| 2169 | |
| 2170 | return children; |
| 2171 | } |
| 2172 | |
| 2173 | /* Compute # of public, private, and protected variables in this class. |
| 2174 | That means we need to descend into all baseclasses and find out |
| 2175 | how many are there, too. */ |
| 2176 | static void |
| 2177 | cplus_class_num_children (struct type *type, int children[3]) |
| 2178 | { |
| 2179 | int i; |
| 2180 | |
| 2181 | children[v_public] = 0; |
| 2182 | children[v_private] = 0; |
| 2183 | children[v_protected] = 0; |
| 2184 | |
| 2185 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) |
| 2186 | { |
| 2187 | /* If we have a virtual table pointer, omit it. */ |
| 2188 | if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i) |
| 2189 | continue; |
| 2190 | |
| 2191 | if (TYPE_FIELD_PROTECTED (type, i)) |
| 2192 | children[v_protected]++; |
| 2193 | else if (TYPE_FIELD_PRIVATE (type, i)) |
| 2194 | children[v_private]++; |
| 2195 | else |
| 2196 | children[v_public]++; |
| 2197 | } |
| 2198 | } |
| 2199 | |
| 2200 | static char * |
| 2201 | cplus_name_of_variable (struct varobj *parent) |
| 2202 | { |
| 2203 | return c_name_of_variable (parent); |
| 2204 | } |
| 2205 | |
| 2206 | enum accessibility { private_field, protected_field, public_field }; |
| 2207 | |
| 2208 | /* Check if field INDEX of TYPE has the specified accessibility. |
| 2209 | Return 0 if so and 1 otherwise. */ |
| 2210 | static int |
| 2211 | match_accessibility (struct type *type, int index, enum accessibility acc) |
| 2212 | { |
| 2213 | if (acc == private_field && TYPE_FIELD_PRIVATE (type, index)) |
| 2214 | return 1; |
| 2215 | else if (acc == protected_field && TYPE_FIELD_PROTECTED (type, index)) |
| 2216 | return 1; |
| 2217 | else if (acc == public_field && !TYPE_FIELD_PRIVATE (type, index) |
| 2218 | && !TYPE_FIELD_PROTECTED (type, index)) |
| 2219 | return 1; |
| 2220 | else |
| 2221 | return 0; |
| 2222 | } |
| 2223 | |
| 2224 | static void |
| 2225 | cplus_describe_child (struct varobj *parent, int index, |
| 2226 | char **cname, struct value **cvalue, struct type **ctype) |
| 2227 | { |
| 2228 | char *name = 0; |
| 2229 | struct value *value; |
| 2230 | struct type *type; |
| 2231 | |
| 2232 | if (cname) |
| 2233 | *cname = NULL; |
| 2234 | if (cvalue) |
| 2235 | *cvalue = NULL; |
| 2236 | if (ctype) |
| 2237 | *ctype = NULL; |
| 2238 | |
| 2239 | |
| 2240 | if (CPLUS_FAKE_CHILD (parent)) |
| 2241 | { |
| 2242 | value = parent->parent->value; |
| 2243 | type = get_value_type (parent->parent); |
| 2244 | } |
| 2245 | else |
| 2246 | { |
| 2247 | value = parent->value; |
| 2248 | type = get_value_type (parent); |
| 2249 | } |
| 2250 | |
| 2251 | adjust_value_for_child_access (&value, &type); |
| 2252 | |
| 2253 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 2254 | || TYPE_CODE (type) == TYPE_CODE_STRUCT) |
| 2255 | { |
| 2256 | if (CPLUS_FAKE_CHILD (parent)) |
| 2257 | { |
| 2258 | /* The fields of the class type are ordered as they |
| 2259 | appear in the class. We are given an index for a |
| 2260 | particular access control type ("public","protected", |
| 2261 | or "private"). We must skip over fields that don't |
| 2262 | have the access control we are looking for to properly |
| 2263 | find the indexed field. */ |
| 2264 | int type_index = TYPE_N_BASECLASSES (type); |
| 2265 | enum accessibility acc = public_field; |
| 2266 | if (strcmp (parent->name, "private") == 0) |
| 2267 | acc = private_field; |
| 2268 | else if (strcmp (parent->name, "protected") == 0) |
| 2269 | acc = protected_field; |
| 2270 | |
| 2271 | while (index >= 0) |
| 2272 | { |
| 2273 | if (TYPE_VPTR_BASETYPE (type) == type |
| 2274 | && type_index == TYPE_VPTR_FIELDNO (type)) |
| 2275 | ; /* ignore vptr */ |
| 2276 | else if (match_accessibility (type, type_index, acc)) |
| 2277 | --index; |
| 2278 | ++type_index; |
| 2279 | } |
| 2280 | --type_index; |
| 2281 | |
| 2282 | if (cname) |
| 2283 | *cname = xstrdup (TYPE_FIELD_NAME (type, type_index)); |
| 2284 | |
| 2285 | if (cvalue && value) |
| 2286 | *cvalue = value_struct_element_index (value, type_index); |
| 2287 | |
| 2288 | if (ctype) |
| 2289 | *ctype = TYPE_FIELD_TYPE (type, type_index); |
| 2290 | } |
| 2291 | else if (index < TYPE_N_BASECLASSES (type)) |
| 2292 | { |
| 2293 | /* This is a baseclass. */ |
| 2294 | if (cname) |
| 2295 | *cname = xstrdup (TYPE_FIELD_NAME (type, index)); |
| 2296 | |
| 2297 | if (cvalue && value) |
| 2298 | { |
| 2299 | *cvalue = value_cast (TYPE_FIELD_TYPE (type, index), value); |
| 2300 | } |
| 2301 | |
| 2302 | if (ctype) |
| 2303 | { |
| 2304 | *ctype = TYPE_FIELD_TYPE (type, index); |
| 2305 | } |
| 2306 | } |
| 2307 | else |
| 2308 | { |
| 2309 | char *access = 0; |
| 2310 | int children[3]; |
| 2311 | cplus_class_num_children (type, children); |
| 2312 | |
| 2313 | /* Everything beyond the baseclasses can |
| 2314 | only be "public", "private", or "protected" |
| 2315 | |
| 2316 | The special "fake" children are always output by varobj in |
| 2317 | this order. So if INDEX == 2, it MUST be "protected". */ |
| 2318 | index -= TYPE_N_BASECLASSES (type); |
| 2319 | switch (index) |
| 2320 | { |
| 2321 | case 0: |
| 2322 | if (children[v_public] > 0) |
| 2323 | access = "public"; |
| 2324 | else if (children[v_private] > 0) |
| 2325 | access = "private"; |
| 2326 | else |
| 2327 | access = "protected"; |
| 2328 | break; |
| 2329 | case 1: |
| 2330 | if (children[v_public] > 0) |
| 2331 | { |
| 2332 | if (children[v_private] > 0) |
| 2333 | access = "private"; |
| 2334 | else |
| 2335 | access = "protected"; |
| 2336 | } |
| 2337 | else if (children[v_private] > 0) |
| 2338 | access = "protected"; |
| 2339 | break; |
| 2340 | case 2: |
| 2341 | /* Must be protected */ |
| 2342 | access = "protected"; |
| 2343 | break; |
| 2344 | default: |
| 2345 | /* error! */ |
| 2346 | break; |
| 2347 | } |
| 2348 | |
| 2349 | if (cname) |
| 2350 | *cname = xstrdup (access); |
| 2351 | |
| 2352 | /* Value and type are null here. */ |
| 2353 | } |
| 2354 | } |
| 2355 | else |
| 2356 | { |
| 2357 | c_describe_child (parent, index, cname, cvalue, ctype); |
| 2358 | } |
| 2359 | } |
| 2360 | |
| 2361 | static char * |
| 2362 | cplus_name_of_child (struct varobj *parent, int index) |
| 2363 | { |
| 2364 | char *name = NULL; |
| 2365 | cplus_describe_child (parent, index, &name, NULL, NULL); |
| 2366 | return name; |
| 2367 | } |
| 2368 | |
| 2369 | static struct value * |
| 2370 | cplus_value_of_root (struct varobj **var_handle) |
| 2371 | { |
| 2372 | return c_value_of_root (var_handle); |
| 2373 | } |
| 2374 | |
| 2375 | static struct value * |
| 2376 | cplus_value_of_child (struct varobj *parent, int index) |
| 2377 | { |
| 2378 | struct value *value = NULL; |
| 2379 | cplus_describe_child (parent, index, NULL, &value, NULL); |
| 2380 | return value; |
| 2381 | } |
| 2382 | |
| 2383 | static struct type * |
| 2384 | cplus_type_of_child (struct varobj *parent, int index) |
| 2385 | { |
| 2386 | struct type *type = NULL; |
| 2387 | cplus_describe_child (parent, index, NULL, NULL, &type); |
| 2388 | return type; |
| 2389 | } |
| 2390 | |
| 2391 | static int |
| 2392 | cplus_variable_editable (struct varobj *var) |
| 2393 | { |
| 2394 | if (CPLUS_FAKE_CHILD (var)) |
| 2395 | return 0; |
| 2396 | |
| 2397 | return c_variable_editable (var); |
| 2398 | } |
| 2399 | |
| 2400 | static char * |
| 2401 | cplus_value_of_variable (struct varobj *var) |
| 2402 | { |
| 2403 | |
| 2404 | /* If we have one of our special types, don't print out |
| 2405 | any value. */ |
| 2406 | if (CPLUS_FAKE_CHILD (var)) |
| 2407 | return xstrdup (""); |
| 2408 | |
| 2409 | return c_value_of_variable (var); |
| 2410 | } |
| 2411 | \f |
| 2412 | /* Java */ |
| 2413 | |
| 2414 | static int |
| 2415 | java_number_of_children (struct varobj *var) |
| 2416 | { |
| 2417 | return cplus_number_of_children (var); |
| 2418 | } |
| 2419 | |
| 2420 | static char * |
| 2421 | java_name_of_variable (struct varobj *parent) |
| 2422 | { |
| 2423 | char *p, *name; |
| 2424 | |
| 2425 | name = cplus_name_of_variable (parent); |
| 2426 | /* If the name has "-" in it, it is because we |
| 2427 | needed to escape periods in the name... */ |
| 2428 | p = name; |
| 2429 | |
| 2430 | while (*p != '\000') |
| 2431 | { |
| 2432 | if (*p == '-') |
| 2433 | *p = '.'; |
| 2434 | p++; |
| 2435 | } |
| 2436 | |
| 2437 | return name; |
| 2438 | } |
| 2439 | |
| 2440 | static char * |
| 2441 | java_name_of_child (struct varobj *parent, int index) |
| 2442 | { |
| 2443 | char *name, *p; |
| 2444 | |
| 2445 | name = cplus_name_of_child (parent, index); |
| 2446 | /* Escape any periods in the name... */ |
| 2447 | p = name; |
| 2448 | |
| 2449 | while (*p != '\000') |
| 2450 | { |
| 2451 | if (*p == '.') |
| 2452 | *p = '-'; |
| 2453 | p++; |
| 2454 | } |
| 2455 | |
| 2456 | return name; |
| 2457 | } |
| 2458 | |
| 2459 | static struct value * |
| 2460 | java_value_of_root (struct varobj **var_handle) |
| 2461 | { |
| 2462 | return cplus_value_of_root (var_handle); |
| 2463 | } |
| 2464 | |
| 2465 | static struct value * |
| 2466 | java_value_of_child (struct varobj *parent, int index) |
| 2467 | { |
| 2468 | return cplus_value_of_child (parent, index); |
| 2469 | } |
| 2470 | |
| 2471 | static struct type * |
| 2472 | java_type_of_child (struct varobj *parent, int index) |
| 2473 | { |
| 2474 | return cplus_type_of_child (parent, index); |
| 2475 | } |
| 2476 | |
| 2477 | static int |
| 2478 | java_variable_editable (struct varobj *var) |
| 2479 | { |
| 2480 | return cplus_variable_editable (var); |
| 2481 | } |
| 2482 | |
| 2483 | static char * |
| 2484 | java_value_of_variable (struct varobj *var) |
| 2485 | { |
| 2486 | return cplus_value_of_variable (var); |
| 2487 | } |
| 2488 | \f |
| 2489 | extern void _initialize_varobj (void); |
| 2490 | void |
| 2491 | _initialize_varobj (void) |
| 2492 | { |
| 2493 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; |
| 2494 | |
| 2495 | varobj_table = xmalloc (sizeof_table); |
| 2496 | memset (varobj_table, 0, sizeof_table); |
| 2497 | |
| 2498 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
| 2499 | &varobjdebug, _("\ |
| 2500 | Set varobj debugging."), _("\ |
| 2501 | Show varobj debugging."), _("\ |
| 2502 | When non-zero, varobj debugging is enabled."), |
| 2503 | NULL, |
| 2504 | show_varobjdebug, |
| 2505 | &setlist, &showlist); |
| 2506 | } |