Commit | Line | Data |
---|---|---|
8b93c638 | 1 | /* Implementation of the GDB variable objects API. |
5b616ba1 | 2 | Copyright 1999, 2000, 2001 Free Software Foundation, Inc. |
8b93c638 JM |
3 | |
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
18 | ||
19 | #include "defs.h" | |
20 | #include "value.h" | |
21 | #include "expression.h" | |
22 | #include "frame.h" | |
8b93c638 JM |
23 | #include "language.h" |
24 | #include "wrapper.h" | |
25 | #include "gdbcmd.h" | |
b66d6d2e | 26 | #include "gdb_string.h" |
8b93c638 JM |
27 | #include <math.h> |
28 | ||
29 | #include "varobj.h" | |
30 | ||
31 | /* Non-zero if we want to see trace of varobj level stuff. */ | |
32 | ||
33 | int varobjdebug = 0; | |
34 | ||
35 | /* String representations of gdb's format codes */ | |
36 | char *varobj_format_string[] = | |
72330bd6 | 37 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 JM |
38 | |
39 | /* String representations of gdb's known languages */ | |
72330bd6 | 40 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 JM |
41 | |
42 | /* Data structures */ | |
43 | ||
44 | /* Every root variable has one of these structures saved in its | |
45 | varobj. Members which must be free'd are noted. */ | |
46 | struct varobj_root | |
72330bd6 | 47 | { |
8b93c638 | 48 | |
72330bd6 AC |
49 | /* Alloc'd expression for this parent. */ |
50 | struct expression *exp; | |
8b93c638 | 51 | |
72330bd6 AC |
52 | /* Block for which this expression is valid */ |
53 | struct block *valid_block; | |
8b93c638 | 54 | |
72330bd6 | 55 | /* The frame for this expression */ |
e64d9b3d | 56 | struct frame_id frame; |
8b93c638 | 57 | |
72330bd6 AC |
58 | /* If 1, "update" always recomputes the frame & valid block |
59 | using the currently selected frame. */ | |
60 | int use_selected_frame; | |
73a93a32 | 61 | |
72330bd6 AC |
62 | /* Language info for this variable and its children */ |
63 | struct language_specific *lang; | |
8b93c638 | 64 | |
72330bd6 AC |
65 | /* The varobj for this root node. */ |
66 | struct varobj *rootvar; | |
8b93c638 | 67 | |
72330bd6 AC |
68 | /* Next root variable */ |
69 | struct varobj_root *next; | |
70 | }; | |
8b93c638 JM |
71 | |
72 | /* Every variable in the system has a structure of this type defined | |
73 | for it. This structure holds all information necessary to manipulate | |
74 | a particular object variable. Members which must be freed are noted. */ | |
75 | struct varobj | |
72330bd6 | 76 | { |
8b93c638 | 77 | |
72330bd6 AC |
78 | /* Alloc'd name of the variable for this object.. If this variable is a |
79 | child, then this name will be the child's source name. | |
80 | (bar, not foo.bar) */ | |
81 | /* NOTE: This is the "expression" */ | |
82 | char *name; | |
8b93c638 | 83 | |
72330bd6 AC |
84 | /* The alloc'd name for this variable's object. This is here for |
85 | convenience when constructing this object's children. */ | |
86 | char *obj_name; | |
8b93c638 | 87 | |
72330bd6 AC |
88 | /* Index of this variable in its parent or -1 */ |
89 | int index; | |
8b93c638 | 90 | |
72330bd6 AC |
91 | /* The type of this variable. This may NEVER be NULL. */ |
92 | struct type *type; | |
8b93c638 | 93 | |
72330bd6 | 94 | /* The value of this expression or subexpression. This may be NULL. */ |
30b28db1 | 95 | struct value *value; |
8b93c638 | 96 | |
72330bd6 AC |
97 | /* Did an error occur evaluating the expression or getting its value? */ |
98 | int error; | |
8b93c638 | 99 | |
72330bd6 AC |
100 | /* The number of (immediate) children this variable has */ |
101 | int num_children; | |
8b93c638 | 102 | |
72330bd6 AC |
103 | /* If this object is a child, this points to its immediate parent. */ |
104 | struct varobj *parent; | |
8b93c638 | 105 | |
72330bd6 AC |
106 | /* A list of this object's children */ |
107 | struct varobj_child *children; | |
8b93c638 | 108 | |
72330bd6 AC |
109 | /* Description of the root variable. Points to root variable for children. */ |
110 | struct varobj_root *root; | |
8b93c638 | 111 | |
72330bd6 AC |
112 | /* The format of the output for this object */ |
113 | enum varobj_display_formats format; | |
fb9b6b35 JJ |
114 | |
115 | /* Was this variable updated via a varobj_set_value operation */ | |
116 | int updated; | |
72330bd6 | 117 | }; |
8b93c638 JM |
118 | |
119 | /* Every variable keeps a linked list of its children, described | |
120 | by the following structure. */ | |
121 | /* FIXME: Deprecated. All should use vlist instead */ | |
122 | ||
123 | struct varobj_child | |
72330bd6 | 124 | { |
8b93c638 | 125 | |
72330bd6 AC |
126 | /* Pointer to the child's data */ |
127 | struct varobj *child; | |
8b93c638 | 128 | |
72330bd6 AC |
129 | /* Pointer to the next child */ |
130 | struct varobj_child *next; | |
131 | }; | |
8b93c638 JM |
132 | |
133 | /* A stack of varobjs */ | |
134 | /* FIXME: Deprecated. All should use vlist instead */ | |
135 | ||
136 | struct vstack | |
72330bd6 AC |
137 | { |
138 | struct varobj *var; | |
139 | struct vstack *next; | |
140 | }; | |
8b93c638 JM |
141 | |
142 | struct cpstack | |
72330bd6 AC |
143 | { |
144 | char *name; | |
145 | struct cpstack *next; | |
146 | }; | |
8b93c638 JM |
147 | |
148 | /* A list of varobjs */ | |
149 | ||
150 | struct vlist | |
72330bd6 AC |
151 | { |
152 | struct varobj *var; | |
153 | struct vlist *next; | |
154 | }; | |
8b93c638 JM |
155 | |
156 | /* Private function prototypes */ | |
157 | ||
158 | /* Helper functions for the above subcommands. */ | |
159 | ||
a14ed312 | 160 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 161 | |
a14ed312 KB |
162 | static void delete_variable_1 (struct cpstack **, int *, |
163 | struct varobj *, int, int); | |
8b93c638 | 164 | |
a14ed312 | 165 | static int install_variable (struct varobj *); |
8b93c638 | 166 | |
a14ed312 | 167 | static void uninstall_variable (struct varobj *); |
8b93c638 | 168 | |
a14ed312 | 169 | static struct varobj *child_exists (struct varobj *, char *); |
8b93c638 | 170 | |
a14ed312 | 171 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 172 | |
a14ed312 | 173 | static void save_child_in_parent (struct varobj *, struct varobj *); |
8b93c638 | 174 | |
a14ed312 | 175 | static void remove_child_from_parent (struct varobj *, struct varobj *); |
8b93c638 JM |
176 | |
177 | /* Utility routines */ | |
178 | ||
a14ed312 | 179 | static struct varobj *new_variable (void); |
8b93c638 | 180 | |
a14ed312 | 181 | static struct varobj *new_root_variable (void); |
8b93c638 | 182 | |
a14ed312 | 183 | static void free_variable (struct varobj *var); |
8b93c638 | 184 | |
74b7792f AC |
185 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
186 | ||
a14ed312 | 187 | static struct type *get_type (struct varobj *var); |
8b93c638 | 188 | |
a14ed312 | 189 | static struct type *get_type_deref (struct varobj *var); |
8b93c638 | 190 | |
a14ed312 | 191 | static struct type *get_target_type (struct type *); |
8b93c638 | 192 | |
a14ed312 | 193 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 194 | |
30b28db1 | 195 | static int my_value_equal (struct value *, struct value *, int *); |
8b93c638 | 196 | |
a14ed312 | 197 | static void vpush (struct vstack **pstack, struct varobj *var); |
8b93c638 | 198 | |
a14ed312 | 199 | static struct varobj *vpop (struct vstack **pstack); |
8b93c638 | 200 | |
a14ed312 | 201 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 202 | |
a14ed312 | 203 | static char *cppop (struct cpstack **pstack); |
8b93c638 JM |
204 | |
205 | /* Language-specific routines. */ | |
206 | ||
a14ed312 | 207 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 208 | |
a14ed312 | 209 | static int number_of_children (struct varobj *); |
8b93c638 | 210 | |
a14ed312 | 211 | static char *name_of_variable (struct varobj *); |
8b93c638 | 212 | |
a14ed312 | 213 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 214 | |
30b28db1 | 215 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 216 | |
30b28db1 | 217 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 218 | |
a14ed312 | 219 | static struct type *type_of_child (struct varobj *var); |
8b93c638 | 220 | |
a14ed312 | 221 | static int variable_editable (struct varobj *var); |
8b93c638 | 222 | |
a14ed312 | 223 | static char *my_value_of_variable (struct varobj *var); |
8b93c638 | 224 | |
a14ed312 | 225 | static int type_changeable (struct varobj *var); |
8b93c638 JM |
226 | |
227 | /* C implementation */ | |
228 | ||
a14ed312 | 229 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 230 | |
a14ed312 | 231 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 232 | |
a14ed312 | 233 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 234 | |
30b28db1 | 235 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 236 | |
30b28db1 | 237 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 238 | |
a14ed312 | 239 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 240 | |
a14ed312 | 241 | static int c_variable_editable (struct varobj *var); |
8b93c638 | 242 | |
a14ed312 | 243 | static char *c_value_of_variable (struct varobj *var); |
8b93c638 JM |
244 | |
245 | /* C++ implementation */ | |
246 | ||
a14ed312 | 247 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 248 | |
a14ed312 | 249 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 250 | |
a14ed312 | 251 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 252 | |
a14ed312 | 253 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 254 | |
30b28db1 | 255 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 256 | |
30b28db1 | 257 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 258 | |
a14ed312 | 259 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 260 | |
a14ed312 | 261 | static int cplus_variable_editable (struct varobj *var); |
8b93c638 | 262 | |
a14ed312 | 263 | static char *cplus_value_of_variable (struct varobj *var); |
8b93c638 JM |
264 | |
265 | /* Java implementation */ | |
266 | ||
a14ed312 | 267 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 268 | |
a14ed312 | 269 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 270 | |
a14ed312 | 271 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 272 | |
30b28db1 | 273 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 274 | |
30b28db1 | 275 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 276 | |
a14ed312 | 277 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 278 | |
a14ed312 | 279 | static int java_variable_editable (struct varobj *var); |
8b93c638 | 280 | |
a14ed312 | 281 | static char *java_value_of_variable (struct varobj *var); |
8b93c638 JM |
282 | |
283 | /* The language specific vector */ | |
284 | ||
285 | struct language_specific | |
72330bd6 | 286 | { |
8b93c638 | 287 | |
72330bd6 AC |
288 | /* The language of this variable */ |
289 | enum varobj_languages language; | |
8b93c638 | 290 | |
72330bd6 AC |
291 | /* The number of children of PARENT. */ |
292 | int (*number_of_children) (struct varobj * parent); | |
8b93c638 | 293 | |
72330bd6 AC |
294 | /* The name (expression) of a root varobj. */ |
295 | char *(*name_of_variable) (struct varobj * parent); | |
8b93c638 | 296 | |
72330bd6 AC |
297 | /* The name of the INDEX'th child of PARENT. */ |
298 | char *(*name_of_child) (struct varobj * parent, int index); | |
8b93c638 | 299 | |
30b28db1 AC |
300 | /* The ``struct value *'' of the root variable ROOT. */ |
301 | struct value *(*value_of_root) (struct varobj ** root_handle); | |
8b93c638 | 302 | |
30b28db1 AC |
303 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
304 | struct value *(*value_of_child) (struct varobj * parent, int index); | |
8b93c638 | 305 | |
72330bd6 AC |
306 | /* The type of the INDEX'th child of PARENT. */ |
307 | struct type *(*type_of_child) (struct varobj * parent, int index); | |
8b93c638 | 308 | |
72330bd6 AC |
309 | /* Is VAR editable? */ |
310 | int (*variable_editable) (struct varobj * var); | |
8b93c638 | 311 | |
72330bd6 AC |
312 | /* The current value of VAR. */ |
313 | char *(*value_of_variable) (struct varobj * var); | |
314 | }; | |
8b93c638 JM |
315 | |
316 | /* Array of known source language routines. */ | |
317 | static struct language_specific | |
72330bd6 | 318 | languages[vlang_end][sizeof (struct language_specific)] = { |
8b93c638 JM |
319 | /* Unknown (try treating as C */ |
320 | { | |
72330bd6 AC |
321 | vlang_unknown, |
322 | c_number_of_children, | |
323 | c_name_of_variable, | |
324 | c_name_of_child, | |
325 | c_value_of_root, | |
326 | c_value_of_child, | |
327 | c_type_of_child, | |
328 | c_variable_editable, | |
329 | c_value_of_variable} | |
8b93c638 JM |
330 | , |
331 | /* C */ | |
332 | { | |
72330bd6 AC |
333 | vlang_c, |
334 | c_number_of_children, | |
335 | c_name_of_variable, | |
336 | c_name_of_child, | |
337 | c_value_of_root, | |
338 | c_value_of_child, | |
339 | c_type_of_child, | |
340 | c_variable_editable, | |
341 | c_value_of_variable} | |
8b93c638 JM |
342 | , |
343 | /* C++ */ | |
344 | { | |
72330bd6 AC |
345 | vlang_cplus, |
346 | cplus_number_of_children, | |
347 | cplus_name_of_variable, | |
348 | cplus_name_of_child, | |
349 | cplus_value_of_root, | |
350 | cplus_value_of_child, | |
351 | cplus_type_of_child, | |
352 | cplus_variable_editable, | |
353 | cplus_value_of_variable} | |
8b93c638 JM |
354 | , |
355 | /* Java */ | |
356 | { | |
72330bd6 AC |
357 | vlang_java, |
358 | java_number_of_children, | |
359 | java_name_of_variable, | |
360 | java_name_of_child, | |
361 | java_value_of_root, | |
362 | java_value_of_child, | |
363 | java_type_of_child, | |
364 | java_variable_editable, | |
365 | java_value_of_variable} | |
8b93c638 JM |
366 | }; |
367 | ||
368 | /* A little convenience enum for dealing with C++/Java */ | |
369 | enum vsections | |
72330bd6 AC |
370 | { |
371 | v_public = 0, v_private, v_protected | |
372 | }; | |
8b93c638 JM |
373 | |
374 | /* Private data */ | |
375 | ||
376 | /* Mappings of varobj_display_formats enums to gdb's format codes */ | |
72330bd6 | 377 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 JM |
378 | |
379 | /* Header of the list of root variable objects */ | |
380 | static struct varobj_root *rootlist; | |
381 | static int rootcount = 0; /* number of root varobjs in the list */ | |
382 | ||
383 | /* Prime number indicating the number of buckets in the hash table */ | |
384 | /* A prime large enough to avoid too many colisions */ | |
385 | #define VAROBJ_TABLE_SIZE 227 | |
386 | ||
387 | /* Pointer to the varobj hash table (built at run time) */ | |
388 | static struct vlist **varobj_table; | |
389 | ||
8b93c638 JM |
390 | /* Is the variable X one of our "fake" children? */ |
391 | #define CPLUS_FAKE_CHILD(x) \ | |
392 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
393 | \f | |
394 | ||
395 | /* API Implementation */ | |
396 | ||
397 | /* Creates a varobj (not its children) */ | |
398 | ||
399 | struct varobj * | |
400 | varobj_create (char *objname, | |
72330bd6 | 401 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
402 | { |
403 | struct varobj *var; | |
2c67cb8b AC |
404 | struct frame_info *fi; |
405 | struct frame_info *old_fi = NULL; | |
8b93c638 JM |
406 | struct block *block; |
407 | struct cleanup *old_chain; | |
408 | ||
409 | /* Fill out a varobj structure for the (root) variable being constructed. */ | |
410 | var = new_root_variable (); | |
74b7792f | 411 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
412 | |
413 | if (expression != NULL) | |
414 | { | |
415 | char *p; | |
416 | enum varobj_languages lang; | |
417 | ||
418 | /* Parse and evaluate the expression, filling in as much | |
419 | of the variable's data as possible */ | |
420 | ||
421 | /* Allow creator to specify context of variable */ | |
72330bd6 | 422 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
8b93c638 JM |
423 | fi = selected_frame; |
424 | else | |
425 | fi = find_frame_addr_in_frame_chain (frame); | |
426 | ||
73a93a32 JI |
427 | /* frame = -2 means always use selected frame */ |
428 | if (type == USE_SELECTED_FRAME) | |
429 | var->root->use_selected_frame = 1; | |
430 | ||
8b93c638 JM |
431 | block = NULL; |
432 | if (fi != NULL) | |
ae767bfb | 433 | block = get_frame_block (fi, 0); |
8b93c638 JM |
434 | |
435 | p = expression; | |
436 | innermost_block = NULL; | |
73a93a32 JI |
437 | /* Wrap the call to parse expression, so we can |
438 | return a sensible error. */ | |
439 | if (!gdb_parse_exp_1 (&p, block, 0, &var->root->exp)) | |
440 | { | |
441 | return NULL; | |
442 | } | |
8b93c638 JM |
443 | |
444 | /* Don't allow variables to be created for types. */ | |
445 | if (var->root->exp->elts[0].opcode == OP_TYPE) | |
446 | { | |
447 | do_cleanups (old_chain); | |
448 | fprintf_unfiltered (gdb_stderr, | |
72330bd6 | 449 | "Attempt to use a type name as an expression."); |
8b93c638 JM |
450 | return NULL; |
451 | } | |
452 | ||
453 | var->format = variable_default_display (var); | |
454 | var->root->valid_block = innermost_block; | |
455 | var->name = savestring (expression, strlen (expression)); | |
456 | ||
457 | /* When the frame is different from the current frame, | |
458 | we must select the appropriate frame before parsing | |
459 | the expression, otherwise the value will not be current. | |
460 | Since select_frame is so benign, just call it for all cases. */ | |
461 | if (fi != NULL) | |
462 | { | |
e64d9b3d | 463 | get_frame_id (fi, &var->root->frame); |
8b93c638 | 464 | old_fi = selected_frame; |
0f7d239c | 465 | select_frame (fi); |
8b93c638 JM |
466 | } |
467 | ||
468 | /* We definitively need to catch errors here. | |
469 | If evaluate_expression succeeds we got the value we wanted. | |
470 | But if it fails, we still go on with a call to evaluate_type() */ | |
471 | if (gdb_evaluate_expression (var->root->exp, &var->value)) | |
472 | { | |
473 | /* no error */ | |
474 | release_value (var->value); | |
475 | if (VALUE_LAZY (var->value)) | |
476 | gdb_value_fetch_lazy (var->value); | |
477 | } | |
478 | else | |
479 | var->value = evaluate_type (var->root->exp); | |
480 | ||
481 | var->type = VALUE_TYPE (var->value); | |
482 | ||
483 | /* Set language info */ | |
484 | lang = variable_language (var); | |
485 | var->root->lang = languages[lang]; | |
486 | ||
487 | /* Set ourselves as our root */ | |
488 | var->root->rootvar = var; | |
489 | ||
490 | /* Reset the selected frame */ | |
491 | if (fi != NULL) | |
0f7d239c | 492 | select_frame (old_fi); |
8b93c638 JM |
493 | } |
494 | ||
73a93a32 JI |
495 | /* If the variable object name is null, that means this |
496 | is a temporary variable, so don't install it. */ | |
497 | ||
498 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 JM |
499 | { |
500 | var->obj_name = savestring (objname, strlen (objname)); | |
501 | ||
502 | /* If a varobj name is duplicated, the install will fail so | |
503 | we must clenup */ | |
504 | if (!install_variable (var)) | |
505 | { | |
506 | do_cleanups (old_chain); | |
507 | return NULL; | |
508 | } | |
509 | } | |
510 | ||
511 | discard_cleanups (old_chain); | |
512 | return var; | |
513 | } | |
514 | ||
515 | /* Generates an unique name that can be used for a varobj */ | |
516 | ||
517 | char * | |
518 | varobj_gen_name (void) | |
519 | { | |
520 | static int id = 0; | |
e64d9b3d | 521 | char *obj_name; |
8b93c638 JM |
522 | |
523 | /* generate a name for this object */ | |
524 | id++; | |
e64d9b3d | 525 | xasprintf (&obj_name, "var%d", id); |
8b93c638 | 526 | |
e64d9b3d | 527 | return obj_name; |
8b93c638 JM |
528 | } |
529 | ||
530 | /* Given an "objname", returns the pointer to the corresponding varobj | |
531 | or NULL if not found */ | |
532 | ||
533 | struct varobj * | |
534 | varobj_get_handle (char *objname) | |
535 | { | |
536 | struct vlist *cv; | |
537 | const char *chp; | |
538 | unsigned int index = 0; | |
539 | unsigned int i = 1; | |
540 | ||
541 | for (chp = objname; *chp; chp++) | |
542 | { | |
543 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
544 | } | |
545 | ||
546 | cv = *(varobj_table + index); | |
547 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
548 | cv = cv->next; | |
549 | ||
550 | if (cv == NULL) | |
551 | error ("Variable object not found"); | |
552 | ||
553 | return cv->var; | |
554 | } | |
555 | ||
556 | /* Given the handle, return the name of the object */ | |
557 | ||
558 | char * | |
559 | varobj_get_objname (struct varobj *var) | |
560 | { | |
561 | return var->obj_name; | |
562 | } | |
563 | ||
564 | /* Given the handle, return the expression represented by the object */ | |
565 | ||
566 | char * | |
567 | varobj_get_expression (struct varobj *var) | |
568 | { | |
569 | return name_of_variable (var); | |
570 | } | |
571 | ||
572 | /* Deletes a varobj and all its children if only_children == 0, | |
573 | otherwise deletes only the children; returns a malloc'ed list of all the | |
574 | (malloc'ed) names of the variables that have been deleted (NULL terminated) */ | |
575 | ||
576 | int | |
577 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
578 | { | |
579 | int delcount; | |
580 | int mycount; | |
581 | struct cpstack *result = NULL; | |
582 | char **cp; | |
583 | ||
584 | /* Initialize a stack for temporary results */ | |
585 | cppush (&result, NULL); | |
586 | ||
587 | if (only_children) | |
588 | /* Delete only the variable children */ | |
589 | delcount = delete_variable (&result, var, 1 /* only the children */ ); | |
590 | else | |
591 | /* Delete the variable and all its children */ | |
592 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); | |
593 | ||
594 | /* We may have been asked to return a list of what has been deleted */ | |
595 | if (dellist != NULL) | |
596 | { | |
597 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
598 | ||
599 | cp = *dellist; | |
600 | mycount = delcount; | |
601 | *cp = cppop (&result); | |
602 | while ((*cp != NULL) && (mycount > 0)) | |
603 | { | |
604 | mycount--; | |
605 | cp++; | |
606 | *cp = cppop (&result); | |
607 | } | |
608 | ||
609 | if (mycount || (*cp != NULL)) | |
72330bd6 AC |
610 | warning ("varobj_delete: assertion failed - mycount(=%d) <> 0", |
611 | mycount); | |
8b93c638 JM |
612 | } |
613 | ||
614 | return delcount; | |
615 | } | |
616 | ||
617 | /* Set/Get variable object display format */ | |
618 | ||
619 | enum varobj_display_formats | |
620 | varobj_set_display_format (struct varobj *var, | |
621 | enum varobj_display_formats format) | |
622 | { | |
623 | switch (format) | |
624 | { | |
625 | case FORMAT_NATURAL: | |
626 | case FORMAT_BINARY: | |
627 | case FORMAT_DECIMAL: | |
628 | case FORMAT_HEXADECIMAL: | |
629 | case FORMAT_OCTAL: | |
630 | var->format = format; | |
631 | break; | |
632 | ||
633 | default: | |
634 | var->format = variable_default_display (var); | |
635 | } | |
636 | ||
637 | return var->format; | |
638 | } | |
639 | ||
640 | enum varobj_display_formats | |
641 | varobj_get_display_format (struct varobj *var) | |
642 | { | |
643 | return var->format; | |
644 | } | |
645 | ||
646 | int | |
647 | varobj_get_num_children (struct varobj *var) | |
648 | { | |
649 | if (var->num_children == -1) | |
650 | var->num_children = number_of_children (var); | |
651 | ||
652 | return var->num_children; | |
653 | } | |
654 | ||
655 | /* Creates a list of the immediate children of a variable object; | |
656 | the return code is the number of such children or -1 on error */ | |
657 | ||
658 | int | |
659 | varobj_list_children (struct varobj *var, struct varobj ***childlist) | |
660 | { | |
661 | struct varobj *child; | |
662 | char *name; | |
663 | int i; | |
664 | ||
665 | /* sanity check: have we been passed a pointer? */ | |
666 | if (childlist == NULL) | |
667 | return -1; | |
668 | ||
669 | *childlist = NULL; | |
670 | ||
671 | if (var->num_children == -1) | |
672 | var->num_children = number_of_children (var); | |
673 | ||
674 | /* List of children */ | |
675 | *childlist = xmalloc ((var->num_children + 1) * sizeof (struct varobj *)); | |
676 | ||
677 | for (i = 0; i < var->num_children; i++) | |
678 | { | |
679 | /* Mark as the end in case we bail out */ | |
680 | *((*childlist) + i) = NULL; | |
681 | ||
682 | /* check if child exists, if not create */ | |
683 | name = name_of_child (var, i); | |
684 | child = child_exists (var, name); | |
685 | if (child == NULL) | |
686 | child = create_child (var, i, name); | |
687 | ||
688 | *((*childlist) + i) = child; | |
689 | } | |
690 | ||
691 | /* End of list is marked by a NULL pointer */ | |
692 | *((*childlist) + i) = NULL; | |
693 | ||
694 | return var->num_children; | |
695 | } | |
696 | ||
697 | /* Obtain the type of an object Variable as a string similar to the one gdb | |
698 | prints on the console */ | |
699 | ||
700 | char * | |
701 | varobj_get_type (struct varobj *var) | |
702 | { | |
30b28db1 | 703 | struct value *val; |
8b93c638 JM |
704 | struct cleanup *old_chain; |
705 | struct ui_file *stb; | |
706 | char *thetype; | |
707 | long length; | |
708 | ||
709 | /* For the "fake" variables, do not return a type. (It's type is | |
710 | NULL, too.) */ | |
711 | if (CPLUS_FAKE_CHILD (var)) | |
712 | return NULL; | |
713 | ||
714 | stb = mem_fileopen (); | |
715 | old_chain = make_cleanup_ui_file_delete (stb); | |
716 | ||
30b28db1 | 717 | /* To print the type, we simply create a zero ``struct value *'' and |
8b93c638 JM |
718 | cast it to our type. We then typeprint this variable. */ |
719 | val = value_zero (var->type, not_lval); | |
720 | type_print (VALUE_TYPE (val), "", stb, -1); | |
721 | ||
722 | thetype = ui_file_xstrdup (stb, &length); | |
723 | do_cleanups (old_chain); | |
724 | return thetype; | |
725 | } | |
726 | ||
727 | enum varobj_languages | |
728 | varobj_get_language (struct varobj *var) | |
729 | { | |
730 | return variable_language (var); | |
731 | } | |
732 | ||
733 | int | |
734 | varobj_get_attributes (struct varobj *var) | |
735 | { | |
736 | int attributes = 0; | |
737 | ||
738 | if (variable_editable (var)) | |
739 | /* FIXME: define masks for attributes */ | |
740 | attributes |= 0x00000001; /* Editable */ | |
741 | ||
742 | return attributes; | |
743 | } | |
744 | ||
745 | char * | |
746 | varobj_get_value (struct varobj *var) | |
747 | { | |
748 | return my_value_of_variable (var); | |
749 | } | |
750 | ||
751 | /* Set the value of an object variable (if it is editable) to the | |
752 | value of the given expression */ | |
753 | /* Note: Invokes functions that can call error() */ | |
754 | ||
755 | int | |
756 | varobj_set_value (struct varobj *var, char *expression) | |
757 | { | |
30b28db1 | 758 | struct value *val; |
fb9b6b35 | 759 | int error; |
8b93c638 JM |
760 | int offset = 0; |
761 | ||
762 | /* The argument "expression" contains the variable's new value. | |
763 | We need to first construct a legal expression for this -- ugh! */ | |
764 | /* Does this cover all the bases? */ | |
765 | struct expression *exp; | |
30b28db1 | 766 | struct value *value; |
8b93c638 JM |
767 | int saved_input_radix = input_radix; |
768 | ||
575bbeb6 | 769 | if (var->value != NULL && variable_editable (var) && !var->error) |
8b93c638 JM |
770 | { |
771 | char *s = expression; | |
772 | int i; | |
8b93c638 JM |
773 | |
774 | input_radix = 10; /* ALWAYS reset to decimal temporarily */ | |
586e589c FN |
775 | if (!gdb_parse_exp_1 (&s, 0, 0, &exp)) |
776 | /* We cannot proceed without a well-formed expression. */ | |
777 | return 0; | |
8b93c638 JM |
778 | if (!gdb_evaluate_expression (exp, &value)) |
779 | { | |
780 | /* We cannot proceed without a valid expression. */ | |
8038e1e2 | 781 | xfree (exp); |
8b93c638 JM |
782 | return 0; |
783 | } | |
784 | ||
fb9b6b35 JJ |
785 | if (!my_value_equal (var->value, value, &error)) |
786 | var->updated = 1; | |
575bbeb6 | 787 | if (!gdb_value_assign (var->value, value, &val)) |
8a1a0112 | 788 | return 0; |
8b93c638 JM |
789 | value_free (var->value); |
790 | release_value (val); | |
791 | var->value = val; | |
792 | input_radix = saved_input_radix; | |
793 | return 1; | |
794 | } | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | /* Returns a malloc'ed list with all root variable objects */ | |
800 | int | |
801 | varobj_list (struct varobj ***varlist) | |
802 | { | |
803 | struct varobj **cv; | |
804 | struct varobj_root *croot; | |
805 | int mycount = rootcount; | |
806 | ||
807 | /* Alloc (rootcount + 1) entries for the result */ | |
808 | *varlist = xmalloc ((rootcount + 1) * sizeof (struct varobj *)); | |
809 | ||
810 | cv = *varlist; | |
811 | croot = rootlist; | |
812 | while ((croot != NULL) && (mycount > 0)) | |
813 | { | |
814 | *cv = croot->rootvar; | |
815 | mycount--; | |
816 | cv++; | |
817 | croot = croot->next; | |
818 | } | |
819 | /* Mark the end of the list */ | |
820 | *cv = NULL; | |
821 | ||
822 | if (mycount || (croot != NULL)) | |
72330bd6 AC |
823 | warning |
824 | ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)", | |
825 | rootcount, mycount); | |
8b93c638 JM |
826 | |
827 | return rootcount; | |
828 | } | |
829 | ||
830 | /* Update the values for a variable and its children. This is a | |
831 | two-pronged attack. First, re-parse the value for the root's | |
832 | expression to see if it's changed. Then go all the way | |
833 | through its children, reconstructing them and noting if they've | |
834 | changed. | |
73a93a32 JI |
835 | Return value: |
836 | -1 if there was an error updating the varobj | |
837 | -2 if the type changed | |
838 | Otherwise it is the number of children + parent changed | |
8b93c638 | 839 | |
705da579 KS |
840 | Only root variables can be updated... |
841 | ||
842 | NOTE: This function may delete the caller's varobj. If it | |
843 | returns -2, then it has done this and VARP will be modified | |
844 | to point to the new varobj. */ | |
8b93c638 JM |
845 | |
846 | int | |
705da579 | 847 | varobj_update (struct varobj **varp, struct varobj ***changelist) |
8b93c638 JM |
848 | { |
849 | int changed = 0; | |
73a93a32 | 850 | int type_changed; |
8b93c638 JM |
851 | int i; |
852 | int vleft; | |
853 | int error2; | |
854 | struct varobj *v; | |
855 | struct varobj **cv; | |
2c67cb8b | 856 | struct varobj **templist = NULL; |
30b28db1 | 857 | struct value *new; |
8b93c638 JM |
858 | struct vstack *stack = NULL; |
859 | struct vstack *result = NULL; | |
e64d9b3d MH |
860 | struct frame_id old_fid; |
861 | struct frame_info *fi; | |
8b93c638 JM |
862 | |
863 | /* sanity check: have we been passed a pointer? */ | |
864 | if (changelist == NULL) | |
865 | return -1; | |
866 | ||
867 | /* Only root variables can be updated... */ | |
705da579 | 868 | if ((*varp)->root->rootvar != *varp) |
8b93c638 JM |
869 | /* Not a root var */ |
870 | return -1; | |
871 | ||
872 | /* Save the selected stack frame, since we will need to change it | |
873 | in order to evaluate expressions. */ | |
e64d9b3d | 874 | get_frame_id (selected_frame, &old_fid); |
8b93c638 JM |
875 | |
876 | /* Update the root variable. value_of_root can return NULL | |
877 | if the variable is no longer around, i.e. we stepped out of | |
73a93a32 JI |
878 | the frame in which a local existed. We are letting the |
879 | value_of_root variable dispose of the varobj if the type | |
880 | has changed. */ | |
881 | type_changed = 1; | |
705da579 | 882 | new = value_of_root (varp, &type_changed); |
8b93c638 | 883 | if (new == NULL) |
73a93a32 | 884 | { |
705da579 | 885 | (*varp)->error = 1; |
73a93a32 JI |
886 | return -1; |
887 | } | |
8b93c638 JM |
888 | |
889 | /* Initialize a stack for temporary results */ | |
890 | vpush (&result, NULL); | |
891 | ||
ae093f96 FN |
892 | /* If this is a "use_selected_frame" varobj, and its type has changed, |
893 | them note that it's changed. */ | |
894 | if (type_changed) | |
8b93c638 | 895 | { |
705da579 | 896 | vpush (&result, *varp); |
ae093f96 FN |
897 | changed++; |
898 | } | |
899 | /* If values are not equal, note that it's changed. | |
900 | There a couple of exceptions here, though. | |
901 | We don't want some types to be reported as "changed". */ | |
fb9b6b35 JJ |
902 | else if (type_changeable (*varp) && |
903 | ((*varp)->updated || !my_value_equal ((*varp)->value, new, &error2))) | |
ae093f96 | 904 | { |
705da579 | 905 | vpush (&result, *varp); |
fb9b6b35 | 906 | (*varp)->updated = 0; |
ae093f96 FN |
907 | changed++; |
908 | /* error2 replaces var->error since this new value | |
909 | WILL replace the old one. */ | |
705da579 | 910 | (*varp)->error = error2; |
8b93c638 | 911 | } |
8b93c638 JM |
912 | |
913 | /* We must always keep around the new value for this root | |
914 | variable expression, or we lose the updated children! */ | |
705da579 KS |
915 | value_free ((*varp)->value); |
916 | (*varp)->value = new; | |
8b93c638 JM |
917 | |
918 | /* Initialize a stack */ | |
919 | vpush (&stack, NULL); | |
920 | ||
921 | /* Push the root's children */ | |
705da579 | 922 | if ((*varp)->children != NULL) |
8b93c638 JM |
923 | { |
924 | struct varobj_child *c; | |
705da579 | 925 | for (c = (*varp)->children; c != NULL; c = c->next) |
8b93c638 JM |
926 | vpush (&stack, c->child); |
927 | } | |
928 | ||
929 | /* Walk through the children, reconstructing them all. */ | |
930 | v = vpop (&stack); | |
931 | while (v != NULL) | |
932 | { | |
933 | /* Push any children */ | |
934 | if (v->children != NULL) | |
935 | { | |
936 | struct varobj_child *c; | |
937 | for (c = v->children; c != NULL; c = c->next) | |
938 | vpush (&stack, c->child); | |
939 | } | |
940 | ||
941 | /* Update this variable */ | |
942 | new = value_of_child (v->parent, v->index); | |
fb9b6b35 JJ |
943 | if (type_changeable (v) && |
944 | (v->updated || !my_value_equal (v->value, new, &error2))) | |
8b93c638 JM |
945 | { |
946 | /* Note that it's changed */ | |
947 | vpush (&result, v); | |
fb9b6b35 | 948 | v->updated = 0; |
8b93c638 JM |
949 | changed++; |
950 | } | |
951 | /* error2 replaces v->error since this new value | |
952 | WILL replace the old one. */ | |
953 | v->error = error2; | |
954 | ||
955 | /* We must always keep new values, since children depend on it. */ | |
956 | if (v->value != NULL) | |
957 | value_free (v->value); | |
958 | v->value = new; | |
959 | ||
960 | /* Get next child */ | |
961 | v = vpop (&stack); | |
962 | } | |
963 | ||
964 | /* Alloc (changed + 1) list entries */ | |
965 | /* FIXME: add a cleanup for the allocated list(s) | |
966 | because one day the select_frame called below can longjump */ | |
967 | *changelist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
968 | if (changed > 1) | |
969 | { | |
970 | templist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
971 | cv = templist; | |
972 | } | |
973 | else | |
974 | cv = *changelist; | |
975 | ||
976 | /* Copy from result stack to list */ | |
977 | vleft = changed; | |
978 | *cv = vpop (&result); | |
979 | while ((*cv != NULL) && (vleft > 0)) | |
980 | { | |
981 | vleft--; | |
982 | cv++; | |
983 | *cv = vpop (&result); | |
984 | } | |
985 | if (vleft) | |
986 | warning ("varobj_update: assertion failed - vleft <> 0"); | |
987 | ||
988 | if (changed > 1) | |
989 | { | |
990 | /* Now we revert the order. */ | |
72330bd6 AC |
991 | for (i = 0; i < changed; i++) |
992 | *(*changelist + i) = *(templist + changed - 1 - i); | |
8b93c638 JM |
993 | *(*changelist + changed) = NULL; |
994 | } | |
995 | ||
996 | /* Restore selected frame */ | |
e64d9b3d MH |
997 | fi = frame_find_by_id (old_fid); |
998 | if (fi) | |
999 | select_frame (fi); | |
8b93c638 | 1000 | |
73a93a32 JI |
1001 | if (type_changed) |
1002 | return -2; | |
1003 | else | |
1004 | return changed; | |
8b93c638 JM |
1005 | } |
1006 | \f | |
1007 | ||
1008 | /* Helper functions */ | |
1009 | ||
1010 | /* | |
1011 | * Variable object construction/destruction | |
1012 | */ | |
1013 | ||
1014 | static int | |
fba45db2 KB |
1015 | delete_variable (struct cpstack **resultp, struct varobj *var, |
1016 | int only_children_p) | |
8b93c638 JM |
1017 | { |
1018 | int delcount = 0; | |
1019 | ||
1020 | delete_variable_1 (resultp, &delcount, var, | |
1021 | only_children_p, 1 /* remove_from_parent_p */ ); | |
1022 | ||
1023 | return delcount; | |
1024 | } | |
1025 | ||
1026 | /* Delete the variable object VAR and its children */ | |
1027 | /* IMPORTANT NOTE: If we delete a variable which is a child | |
1028 | and the parent is not removed we dump core. It must be always | |
1029 | initially called with remove_from_parent_p set */ | |
1030 | static void | |
72330bd6 AC |
1031 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
1032 | struct varobj *var, int only_children_p, | |
1033 | int remove_from_parent_p) | |
8b93c638 JM |
1034 | { |
1035 | struct varobj_child *vc; | |
1036 | struct varobj_child *next; | |
1037 | ||
1038 | /* Delete any children of this variable, too. */ | |
1039 | for (vc = var->children; vc != NULL; vc = next) | |
1040 | { | |
1041 | if (!remove_from_parent_p) | |
1042 | vc->child->parent = NULL; | |
1043 | delete_variable_1 (resultp, delcountp, vc->child, 0, only_children_p); | |
1044 | next = vc->next; | |
b8c9b27d | 1045 | xfree (vc); |
8b93c638 JM |
1046 | } |
1047 | ||
1048 | /* if we were called to delete only the children we are done here */ | |
1049 | if (only_children_p) | |
1050 | return; | |
1051 | ||
1052 | /* Otherwise, add it to the list of deleted ones and proceed to do so */ | |
73a93a32 JI |
1053 | /* If the name is null, this is a temporary variable, that has not |
1054 | yet been installed, don't report it, it belongs to the caller... */ | |
1055 | if (var->obj_name != NULL) | |
8b93c638 | 1056 | { |
5b616ba1 | 1057 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
1058 | *delcountp = *delcountp + 1; |
1059 | } | |
1060 | ||
1061 | /* If this variable has a parent, remove it from its parent's list */ | |
1062 | /* OPTIMIZATION: if the parent of this variable is also being deleted, | |
1063 | (as indicated by remove_from_parent_p) we don't bother doing an | |
1064 | expensive list search to find the element to remove when we are | |
1065 | discarding the list afterwards */ | |
72330bd6 | 1066 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 JM |
1067 | { |
1068 | remove_child_from_parent (var->parent, var); | |
1069 | } | |
72330bd6 | 1070 | |
73a93a32 JI |
1071 | if (var->obj_name != NULL) |
1072 | uninstall_variable (var); | |
8b93c638 JM |
1073 | |
1074 | /* Free memory associated with this variable */ | |
1075 | free_variable (var); | |
1076 | } | |
1077 | ||
1078 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ | |
1079 | static int | |
fba45db2 | 1080 | install_variable (struct varobj *var) |
8b93c638 JM |
1081 | { |
1082 | struct vlist *cv; | |
1083 | struct vlist *newvl; | |
1084 | const char *chp; | |
1085 | unsigned int index = 0; | |
1086 | unsigned int i = 1; | |
1087 | ||
1088 | for (chp = var->obj_name; *chp; chp++) | |
1089 | { | |
1090 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1091 | } | |
1092 | ||
1093 | cv = *(varobj_table + index); | |
1094 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1095 | cv = cv->next; | |
1096 | ||
1097 | if (cv != NULL) | |
1098 | error ("Duplicate variable object name"); | |
1099 | ||
1100 | /* Add varobj to hash table */ | |
1101 | newvl = xmalloc (sizeof (struct vlist)); | |
1102 | newvl->next = *(varobj_table + index); | |
1103 | newvl->var = var; | |
1104 | *(varobj_table + index) = newvl; | |
1105 | ||
1106 | /* If root, add varobj to root list */ | |
1107 | if (var->root->rootvar == var) | |
1108 | { | |
1109 | /* Add to list of root variables */ | |
1110 | if (rootlist == NULL) | |
1111 | var->root->next = NULL; | |
1112 | else | |
1113 | var->root->next = rootlist; | |
1114 | rootlist = var->root; | |
1115 | rootcount++; | |
1116 | } | |
1117 | ||
1118 | return 1; /* OK */ | |
1119 | } | |
1120 | ||
1121 | /* Unistall the object VAR. */ | |
1122 | static void | |
fba45db2 | 1123 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
1124 | { |
1125 | struct vlist *cv; | |
1126 | struct vlist *prev; | |
1127 | struct varobj_root *cr; | |
1128 | struct varobj_root *prer; | |
1129 | const char *chp; | |
1130 | unsigned int index = 0; | |
1131 | unsigned int i = 1; | |
1132 | ||
1133 | /* Remove varobj from hash table */ | |
1134 | for (chp = var->obj_name; *chp; chp++) | |
1135 | { | |
1136 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1137 | } | |
1138 | ||
1139 | cv = *(varobj_table + index); | |
1140 | prev = NULL; | |
1141 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1142 | { | |
1143 | prev = cv; | |
1144 | cv = cv->next; | |
1145 | } | |
1146 | ||
1147 | if (varobjdebug) | |
1148 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
1149 | ||
1150 | if (cv == NULL) | |
1151 | { | |
72330bd6 AC |
1152 | warning |
1153 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
1154 | var->obj_name); | |
8b93c638 JM |
1155 | return; |
1156 | } | |
1157 | ||
1158 | if (prev == NULL) | |
1159 | *(varobj_table + index) = cv->next; | |
1160 | else | |
1161 | prev->next = cv->next; | |
1162 | ||
b8c9b27d | 1163 | xfree (cv); |
8b93c638 JM |
1164 | |
1165 | /* If root, remove varobj from root list */ | |
1166 | if (var->root->rootvar == var) | |
1167 | { | |
1168 | /* Remove from list of root variables */ | |
1169 | if (rootlist == var->root) | |
1170 | rootlist = var->root->next; | |
1171 | else | |
1172 | { | |
1173 | prer = NULL; | |
1174 | cr = rootlist; | |
1175 | while ((cr != NULL) && (cr->rootvar != var)) | |
1176 | { | |
1177 | prer = cr; | |
1178 | cr = cr->next; | |
1179 | } | |
1180 | if (cr == NULL) | |
1181 | { | |
72330bd6 AC |
1182 | warning |
1183 | ("Assertion failed: Could not find varobj \"%s\" in root list", | |
1184 | var->obj_name); | |
8b93c638 JM |
1185 | return; |
1186 | } | |
1187 | if (prer == NULL) | |
1188 | rootlist = NULL; | |
1189 | else | |
1190 | prer->next = cr->next; | |
1191 | } | |
1192 | rootcount--; | |
1193 | } | |
1194 | ||
1195 | } | |
1196 | ||
1197 | /* Does a child with the name NAME exist in VAR? If so, return its data. | |
1198 | If not, return NULL. */ | |
1199 | static struct varobj * | |
1669605f | 1200 | child_exists (struct varobj *var, char *name) |
8b93c638 JM |
1201 | { |
1202 | struct varobj_child *vc; | |
1203 | ||
1204 | for (vc = var->children; vc != NULL; vc = vc->next) | |
1205 | { | |
1206 | if (STREQ (vc->child->name, name)) | |
1207 | return vc->child; | |
1208 | } | |
1209 | ||
1210 | return NULL; | |
1211 | } | |
1212 | ||
1213 | /* Create and install a child of the parent of the given name */ | |
1214 | static struct varobj * | |
fba45db2 | 1215 | create_child (struct varobj *parent, int index, char *name) |
8b93c638 JM |
1216 | { |
1217 | struct varobj *child; | |
1218 | char *childs_name; | |
1219 | ||
1220 | child = new_variable (); | |
1221 | ||
1222 | /* name is allocated by name_of_child */ | |
1223 | child->name = name; | |
1224 | child->index = index; | |
1225 | child->value = value_of_child (parent, index); | |
7f19b9a2 | 1226 | if ((!CPLUS_FAKE_CHILD (child) && child->value == NULL) || parent->error) |
8b93c638 JM |
1227 | child->error = 1; |
1228 | child->parent = parent; | |
1229 | child->root = parent->root; | |
e64d9b3d | 1230 | xasprintf (&childs_name, "%s.%s", parent->obj_name, name); |
8b93c638 JM |
1231 | child->obj_name = childs_name; |
1232 | install_variable (child); | |
1233 | ||
1234 | /* Save a pointer to this child in the parent */ | |
1235 | save_child_in_parent (parent, child); | |
1236 | ||
1237 | /* Note the type of this child */ | |
1238 | child->type = type_of_child (child); | |
1239 | ||
1240 | return child; | |
1241 | } | |
1242 | ||
1243 | /* FIXME: This should be a generic add to list */ | |
1244 | /* Save CHILD in the PARENT's data. */ | |
1245 | static void | |
fba45db2 | 1246 | save_child_in_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1247 | { |
1248 | struct varobj_child *vc; | |
1249 | ||
1250 | /* Insert the child at the top */ | |
1251 | vc = parent->children; | |
1252 | parent->children = | |
1253 | (struct varobj_child *) xmalloc (sizeof (struct varobj_child)); | |
1254 | ||
1255 | parent->children->next = vc; | |
1256 | parent->children->child = child; | |
1257 | } | |
1258 | ||
1259 | /* FIXME: This should be a generic remove from list */ | |
1260 | /* Remove the CHILD from the PARENT's list of children. */ | |
1261 | static void | |
fba45db2 | 1262 | remove_child_from_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1263 | { |
1264 | struct varobj_child *vc, *prev; | |
1265 | ||
1266 | /* Find the child in the parent's list */ | |
1267 | prev = NULL; | |
1268 | for (vc = parent->children; vc != NULL;) | |
1269 | { | |
1270 | if (vc->child == child) | |
1271 | break; | |
1272 | prev = vc; | |
1273 | vc = vc->next; | |
1274 | } | |
1275 | ||
1276 | if (prev == NULL) | |
1277 | parent->children = vc->next; | |
1278 | else | |
1279 | prev->next = vc->next; | |
1280 | ||
1281 | } | |
1282 | \f | |
1283 | ||
1284 | /* | |
1285 | * Miscellaneous utility functions. | |
1286 | */ | |
1287 | ||
1288 | /* Allocate memory and initialize a new variable */ | |
1289 | static struct varobj * | |
1290 | new_variable (void) | |
1291 | { | |
1292 | struct varobj *var; | |
1293 | ||
1294 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
1295 | var->name = NULL; | |
1296 | var->obj_name = NULL; | |
1297 | var->index = -1; | |
1298 | var->type = NULL; | |
1299 | var->value = NULL; | |
1300 | var->error = 0; | |
1301 | var->num_children = -1; | |
1302 | var->parent = NULL; | |
1303 | var->children = NULL; | |
1304 | var->format = 0; | |
1305 | var->root = NULL; | |
fb9b6b35 | 1306 | var->updated = 0; |
8b93c638 JM |
1307 | |
1308 | return var; | |
1309 | } | |
1310 | ||
1311 | /* Allocate memory and initialize a new root variable */ | |
1312 | static struct varobj * | |
1313 | new_root_variable (void) | |
1314 | { | |
1315 | struct varobj *var = new_variable (); | |
1316 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));; | |
1317 | var->root->lang = NULL; | |
1318 | var->root->exp = NULL; | |
1319 | var->root->valid_block = NULL; | |
e64d9b3d MH |
1320 | var->root->frame.base = 0; |
1321 | var->root->frame.pc = 0; | |
73a93a32 | 1322 | var->root->use_selected_frame = 0; |
8b93c638 JM |
1323 | var->root->rootvar = NULL; |
1324 | ||
1325 | return var; | |
1326 | } | |
1327 | ||
1328 | /* Free any allocated memory associated with VAR. */ | |
1329 | static void | |
fba45db2 | 1330 | free_variable (struct varobj *var) |
8b93c638 JM |
1331 | { |
1332 | /* Free the expression if this is a root variable. */ | |
1333 | if (var->root->rootvar == var) | |
1334 | { | |
1335 | free_current_contents ((char **) &var->root->exp); | |
8038e1e2 | 1336 | xfree (var->root); |
8b93c638 JM |
1337 | } |
1338 | ||
8038e1e2 AC |
1339 | xfree (var->name); |
1340 | xfree (var->obj_name); | |
1341 | xfree (var); | |
8b93c638 JM |
1342 | } |
1343 | ||
74b7792f AC |
1344 | static void |
1345 | do_free_variable_cleanup (void *var) | |
1346 | { | |
1347 | free_variable (var); | |
1348 | } | |
1349 | ||
1350 | static struct cleanup * | |
1351 | make_cleanup_free_variable (struct varobj *var) | |
1352 | { | |
1353 | return make_cleanup (do_free_variable_cleanup, var); | |
1354 | } | |
1355 | ||
8b93c638 JM |
1356 | /* This returns the type of the variable. This skips past typedefs |
1357 | and returns the real type of the variable. It also dereferences | |
94b66fa7 KS |
1358 | pointers and references. |
1359 | ||
1360 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1361 | except within get_target_type and get_type. */ | |
8b93c638 | 1362 | static struct type * |
fba45db2 | 1363 | get_type (struct varobj *var) |
8b93c638 JM |
1364 | { |
1365 | struct type *type; | |
1366 | type = var->type; | |
1367 | ||
1368 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
1369 | type = TYPE_TARGET_TYPE (type); | |
1370 | ||
1371 | return type; | |
1372 | } | |
1373 | ||
1374 | /* This returns the type of the variable, dereferencing pointers, too. */ | |
1375 | static struct type * | |
fba45db2 | 1376 | get_type_deref (struct varobj *var) |
8b93c638 JM |
1377 | { |
1378 | struct type *type; | |
1379 | ||
1380 | type = get_type (var); | |
1381 | ||
1382 | if (type != NULL && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1383 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1384 | type = get_target_type (type); | |
1385 | ||
1386 | return type; | |
1387 | } | |
1388 | ||
1389 | /* This returns the target type (or NULL) of TYPE, also skipping | |
94b66fa7 KS |
1390 | past typedefs, just like get_type (). |
1391 | ||
1392 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1393 | except within get_target_type and get_type. */ | |
8b93c638 | 1394 | static struct type * |
fba45db2 | 1395 | get_target_type (struct type *type) |
8b93c638 JM |
1396 | { |
1397 | if (type != NULL) | |
1398 | { | |
1399 | type = TYPE_TARGET_TYPE (type); | |
1400 | while (type != NULL && TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
1401 | type = TYPE_TARGET_TYPE (type); | |
1402 | } | |
1403 | ||
1404 | return type; | |
1405 | } | |
1406 | ||
1407 | /* What is the default display for this variable? We assume that | |
1408 | everything is "natural". Any exceptions? */ | |
1409 | static enum varobj_display_formats | |
fba45db2 | 1410 | variable_default_display (struct varobj *var) |
8b93c638 JM |
1411 | { |
1412 | return FORMAT_NATURAL; | |
1413 | } | |
1414 | ||
1415 | /* This function is similar to gdb's value_equal, except that this | |
1416 | one is "safe" -- it NEVER longjmps. It determines if the VAR's | |
1417 | value is the same as VAL2. */ | |
1418 | static int | |
30b28db1 | 1419 | my_value_equal (struct value *val1, struct value *val2, int *error2) |
8b93c638 JM |
1420 | { |
1421 | int r, err1, err2; | |
1422 | ||
1423 | *error2 = 0; | |
1424 | /* Special case: NULL values. If both are null, say | |
1425 | they're equal. */ | |
1426 | if (val1 == NULL && val2 == NULL) | |
1427 | return 1; | |
1428 | else if (val1 == NULL || val2 == NULL) | |
1429 | return 0; | |
1430 | ||
1431 | /* This is bogus, but unfortunately necessary. We must know | |
1432 | exactly what caused an error -- reading val1 or val2 -- so | |
1433 | that we can really determine if we think that something has changed. */ | |
1434 | err1 = 0; | |
1435 | err2 = 0; | |
1436 | /* We do need to catch errors here because the whole purpose | |
1437 | is to test if value_equal() has errored */ | |
1438 | if (!gdb_value_equal (val1, val1, &r)) | |
1439 | err1 = 1; | |
1440 | ||
1441 | if (!gdb_value_equal (val2, val2, &r)) | |
1442 | *error2 = err2 = 1; | |
1443 | ||
1444 | if (err1 != err2) | |
1445 | return 0; | |
1446 | ||
1447 | if (!gdb_value_equal (val1, val2, &r)) | |
1448 | { | |
1449 | /* An error occurred, this could have happened if | |
1450 | either val1 or val2 errored. ERR1 and ERR2 tell | |
1451 | us which of these it is. If both errored, then | |
1452 | we assume nothing has changed. If one of them is | |
1453 | valid, though, then something has changed. */ | |
1454 | if (err1 == err2) | |
1455 | { | |
1456 | /* both the old and new values caused errors, so | |
1457 | we say the value did not change */ | |
1458 | /* This is indeterminate, though. Perhaps we should | |
1459 | be safe and say, yes, it changed anyway?? */ | |
1460 | return 1; | |
1461 | } | |
1462 | else | |
1463 | { | |
1464 | return 0; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | return r; | |
1469 | } | |
1470 | ||
1471 | /* FIXME: The following should be generic for any pointer */ | |
1472 | static void | |
fba45db2 | 1473 | vpush (struct vstack **pstack, struct varobj *var) |
8b93c638 JM |
1474 | { |
1475 | struct vstack *s; | |
1476 | ||
1477 | s = (struct vstack *) xmalloc (sizeof (struct vstack)); | |
1478 | s->var = var; | |
1479 | s->next = *pstack; | |
1480 | *pstack = s; | |
1481 | } | |
1482 | ||
1483 | /* FIXME: The following should be generic for any pointer */ | |
1484 | static struct varobj * | |
fba45db2 | 1485 | vpop (struct vstack **pstack) |
8b93c638 JM |
1486 | { |
1487 | struct vstack *s; | |
1488 | struct varobj *v; | |
1489 | ||
1490 | if ((*pstack)->var == NULL && (*pstack)->next == NULL) | |
1491 | return NULL; | |
1492 | ||
1493 | s = *pstack; | |
1494 | v = s->var; | |
1495 | *pstack = (*pstack)->next; | |
b8c9b27d | 1496 | xfree (s); |
8b93c638 JM |
1497 | |
1498 | return v; | |
1499 | } | |
1500 | ||
1501 | /* FIXME: The following should be generic for any pointer */ | |
1502 | static void | |
fba45db2 | 1503 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
1504 | { |
1505 | struct cpstack *s; | |
1506 | ||
1507 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
1508 | s->name = name; | |
1509 | s->next = *pstack; | |
1510 | *pstack = s; | |
1511 | } | |
1512 | ||
1513 | /* FIXME: The following should be generic for any pointer */ | |
1514 | static char * | |
fba45db2 | 1515 | cppop (struct cpstack **pstack) |
8b93c638 JM |
1516 | { |
1517 | struct cpstack *s; | |
1518 | char *v; | |
1519 | ||
1520 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
1521 | return NULL; | |
1522 | ||
1523 | s = *pstack; | |
1524 | v = s->name; | |
1525 | *pstack = (*pstack)->next; | |
b8c9b27d | 1526 | xfree (s); |
8b93c638 JM |
1527 | |
1528 | return v; | |
1529 | } | |
1530 | \f | |
1531 | /* | |
1532 | * Language-dependencies | |
1533 | */ | |
1534 | ||
1535 | /* Common entry points */ | |
1536 | ||
1537 | /* Get the language of variable VAR. */ | |
1538 | static enum varobj_languages | |
fba45db2 | 1539 | variable_language (struct varobj *var) |
8b93c638 JM |
1540 | { |
1541 | enum varobj_languages lang; | |
1542 | ||
1543 | switch (var->root->exp->language_defn->la_language) | |
1544 | { | |
1545 | default: | |
1546 | case language_c: | |
1547 | lang = vlang_c; | |
1548 | break; | |
1549 | case language_cplus: | |
1550 | lang = vlang_cplus; | |
1551 | break; | |
1552 | case language_java: | |
1553 | lang = vlang_java; | |
1554 | break; | |
1555 | } | |
1556 | ||
1557 | return lang; | |
1558 | } | |
1559 | ||
1560 | /* Return the number of children for a given variable. | |
1561 | The result of this function is defined by the language | |
1562 | implementation. The number of children returned by this function | |
1563 | is the number of children that the user will see in the variable | |
1564 | display. */ | |
1565 | static int | |
fba45db2 | 1566 | number_of_children (struct varobj *var) |
8b93c638 JM |
1567 | { |
1568 | return (*var->root->lang->number_of_children) (var);; | |
1569 | } | |
1570 | ||
1571 | /* What is the expression for the root varobj VAR? Returns a malloc'd string. */ | |
1572 | static char * | |
fba45db2 | 1573 | name_of_variable (struct varobj *var) |
8b93c638 JM |
1574 | { |
1575 | return (*var->root->lang->name_of_variable) (var); | |
1576 | } | |
1577 | ||
1578 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */ | |
1579 | static char * | |
fba45db2 | 1580 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
1581 | { |
1582 | return (*var->root->lang->name_of_child) (var, index); | |
1583 | } | |
1584 | ||
30b28db1 | 1585 | /* What is the ``struct value *'' of the root variable VAR? |
73a93a32 JI |
1586 | TYPE_CHANGED controls what to do if the type of a |
1587 | use_selected_frame = 1 variable changes. On input, | |
1588 | TYPE_CHANGED = 1 means discard the old varobj, and replace | |
1589 | it with this one. TYPE_CHANGED = 0 means leave it around. | |
1590 | NB: In both cases, var_handle will point to the new varobj, | |
1591 | so if you use TYPE_CHANGED = 0, you will have to stash the | |
1592 | old varobj pointer away somewhere before calling this. | |
1593 | On return, TYPE_CHANGED will be 1 if the type has changed, and | |
1594 | 0 otherwise. */ | |
30b28db1 | 1595 | static struct value * |
fba45db2 | 1596 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 1597 | { |
73a93a32 JI |
1598 | struct varobj *var; |
1599 | ||
1600 | if (var_handle == NULL) | |
1601 | return NULL; | |
1602 | ||
1603 | var = *var_handle; | |
1604 | ||
1605 | /* This should really be an exception, since this should | |
1606 | only get called with a root variable. */ | |
1607 | ||
1608 | if (var->root->rootvar != var) | |
1609 | return NULL; | |
1610 | ||
1611 | if (var->root->use_selected_frame) | |
1612 | { | |
1613 | struct varobj *tmp_var; | |
1614 | char *old_type, *new_type; | |
1615 | old_type = varobj_get_type (var); | |
1616 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
1617 | USE_SELECTED_FRAME); | |
1618 | if (tmp_var == NULL) | |
1619 | { | |
1620 | return NULL; | |
1621 | } | |
1622 | new_type = varobj_get_type (tmp_var); | |
72330bd6 | 1623 | if (strcmp (old_type, new_type) == 0) |
73a93a32 JI |
1624 | { |
1625 | varobj_delete (tmp_var, NULL, 0); | |
1626 | *type_changed = 0; | |
1627 | } | |
1628 | else | |
1629 | { | |
1630 | if (*type_changed) | |
1631 | { | |
72330bd6 | 1632 | tmp_var->obj_name = |
73a93a32 | 1633 | savestring (var->obj_name, strlen (var->obj_name)); |
f7635dd9 | 1634 | varobj_delete (var, NULL, 0); |
73a93a32 JI |
1635 | } |
1636 | else | |
1637 | { | |
72330bd6 | 1638 | tmp_var->obj_name = varobj_gen_name (); |
73a93a32 JI |
1639 | } |
1640 | install_variable (tmp_var); | |
1641 | *var_handle = tmp_var; | |
705da579 | 1642 | var = *var_handle; |
73a93a32 JI |
1643 | *type_changed = 1; |
1644 | } | |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | *type_changed = 0; | |
1649 | } | |
1650 | ||
1651 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
1652 | } |
1653 | ||
30b28db1 AC |
1654 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
1655 | static struct value * | |
fba45db2 | 1656 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 1657 | { |
30b28db1 | 1658 | struct value *value; |
8b93c638 JM |
1659 | |
1660 | value = (*parent->root->lang->value_of_child) (parent, index); | |
1661 | ||
1662 | /* If we're being lazy, fetch the real value of the variable. */ | |
1663 | if (value != NULL && VALUE_LAZY (value)) | |
575bbeb6 KS |
1664 | { |
1665 | /* If we fail to fetch the value of the child, return | |
7f19b9a2 AC |
1666 | NULL so that callers notice that we're leaving an |
1667 | error message. */ | |
575bbeb6 KS |
1668 | if (!gdb_value_fetch_lazy (value)) |
1669 | value = NULL; | |
1670 | } | |
8b93c638 JM |
1671 | |
1672 | return value; | |
1673 | } | |
1674 | ||
1675 | /* What is the type of VAR? */ | |
1676 | static struct type * | |
fba45db2 | 1677 | type_of_child (struct varobj *var) |
8b93c638 JM |
1678 | { |
1679 | ||
1680 | /* If the child had no evaluation errors, var->value | |
1681 | will be non-NULL and contain a valid type. */ | |
1682 | if (var->value != NULL) | |
1683 | return VALUE_TYPE (var->value); | |
1684 | ||
1685 | /* Otherwise, we must compute the type. */ | |
1686 | return (*var->root->lang->type_of_child) (var->parent, var->index); | |
1687 | } | |
1688 | ||
1689 | /* Is this variable editable? Use the variable's type to make | |
1690 | this determination. */ | |
1691 | static int | |
fba45db2 | 1692 | variable_editable (struct varobj *var) |
8b93c638 JM |
1693 | { |
1694 | return (*var->root->lang->variable_editable) (var); | |
1695 | } | |
1696 | ||
1697 | /* GDB already has a command called "value_of_variable". Sigh. */ | |
1698 | static char * | |
fba45db2 | 1699 | my_value_of_variable (struct varobj *var) |
8b93c638 JM |
1700 | { |
1701 | return (*var->root->lang->value_of_variable) (var); | |
1702 | } | |
1703 | ||
1704 | /* Is VAR something that can change? Depending on language, | |
1705 | some variable's values never change. For example, | |
1706 | struct and unions never change values. */ | |
1707 | static int | |
fba45db2 | 1708 | type_changeable (struct varobj *var) |
8b93c638 JM |
1709 | { |
1710 | int r; | |
1711 | struct type *type; | |
1712 | ||
1713 | if (CPLUS_FAKE_CHILD (var)) | |
1714 | return 0; | |
1715 | ||
1716 | type = get_type (var); | |
1717 | ||
1718 | switch (TYPE_CODE (type)) | |
1719 | { | |
72330bd6 AC |
1720 | case TYPE_CODE_STRUCT: |
1721 | case TYPE_CODE_UNION: | |
1722 | case TYPE_CODE_ARRAY: | |
1723 | r = 0; | |
1724 | break; | |
8b93c638 | 1725 | |
72330bd6 AC |
1726 | default: |
1727 | r = 1; | |
8b93c638 JM |
1728 | } |
1729 | ||
1730 | return r; | |
1731 | } | |
1732 | ||
1733 | /* C */ | |
1734 | static int | |
fba45db2 | 1735 | c_number_of_children (struct varobj *var) |
8b93c638 JM |
1736 | { |
1737 | struct type *type; | |
1738 | struct type *target; | |
1739 | int children; | |
1740 | ||
1741 | type = get_type (var); | |
1742 | target = get_target_type (type); | |
1743 | children = 0; | |
1744 | ||
1745 | switch (TYPE_CODE (type)) | |
1746 | { | |
1747 | case TYPE_CODE_ARRAY: | |
1748 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
72330bd6 | 1749 | && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED) |
8b93c638 JM |
1750 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
1751 | else | |
1752 | children = -1; | |
1753 | break; | |
1754 | ||
1755 | case TYPE_CODE_STRUCT: | |
1756 | case TYPE_CODE_UNION: | |
1757 | children = TYPE_NFIELDS (type); | |
1758 | break; | |
1759 | ||
1760 | case TYPE_CODE_PTR: | |
1761 | /* This is where things get compilcated. All pointers have one child. | |
1762 | Except, of course, for struct and union ptr, which we automagically | |
0755e6c1 FN |
1763 | dereference for the user and function ptrs, which have no children. |
1764 | We also don't dereference void* as we don't know what to show. | |
1765 | We can show char* so we allow it to be dereferenced. If you decide | |
1766 | to test for it, please mind that a little magic is necessary to | |
1767 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
1768 | TYPE_NAME == "char" */ | |
1769 | ||
8b93c638 JM |
1770 | switch (TYPE_CODE (target)) |
1771 | { | |
1772 | case TYPE_CODE_STRUCT: | |
1773 | case TYPE_CODE_UNION: | |
1774 | children = TYPE_NFIELDS (target); | |
1775 | break; | |
1776 | ||
1777 | case TYPE_CODE_FUNC: | |
0755e6c1 | 1778 | case TYPE_CODE_VOID: |
8b93c638 JM |
1779 | children = 0; |
1780 | break; | |
1781 | ||
1782 | default: | |
0755e6c1 | 1783 | children = 1; |
8b93c638 JM |
1784 | } |
1785 | break; | |
1786 | ||
1787 | default: | |
1788 | /* Other types have no children */ | |
1789 | break; | |
1790 | } | |
1791 | ||
1792 | return children; | |
1793 | } | |
1794 | ||
1795 | static char * | |
fba45db2 | 1796 | c_name_of_variable (struct varobj *parent) |
8b93c638 JM |
1797 | { |
1798 | return savestring (parent->name, strlen (parent->name)); | |
1799 | } | |
1800 | ||
1801 | static char * | |
fba45db2 | 1802 | c_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1803 | { |
1804 | struct type *type; | |
1805 | struct type *target; | |
1806 | char *name; | |
1807 | char *string; | |
1808 | ||
1809 | type = get_type (parent); | |
1810 | target = get_target_type (type); | |
1811 | ||
1812 | switch (TYPE_CODE (type)) | |
1813 | { | |
1814 | case TYPE_CODE_ARRAY: | |
e64d9b3d | 1815 | xasprintf (&name, "%d", index); |
8b93c638 JM |
1816 | break; |
1817 | ||
1818 | case TYPE_CODE_STRUCT: | |
1819 | case TYPE_CODE_UNION: | |
1820 | string = TYPE_FIELD_NAME (type, index); | |
1821 | name = savestring (string, strlen (string)); | |
1822 | break; | |
1823 | ||
1824 | case TYPE_CODE_PTR: | |
1825 | switch (TYPE_CODE (target)) | |
1826 | { | |
1827 | case TYPE_CODE_STRUCT: | |
1828 | case TYPE_CODE_UNION: | |
1829 | string = TYPE_FIELD_NAME (target, index); | |
1830 | name = savestring (string, strlen (string)); | |
1831 | break; | |
1832 | ||
1833 | default: | |
e64d9b3d | 1834 | xasprintf (&name, "*%s", parent->name); |
8b93c638 JM |
1835 | break; |
1836 | } | |
1837 | break; | |
1838 | ||
1839 | default: | |
1840 | /* This should not happen */ | |
1841 | name = xstrdup ("???"); | |
1842 | } | |
1843 | ||
1844 | return name; | |
1845 | } | |
1846 | ||
30b28db1 | 1847 | static struct value * |
fba45db2 | 1848 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 1849 | { |
30b28db1 | 1850 | struct value *new_val; |
73a93a32 | 1851 | struct varobj *var = *var_handle; |
8b93c638 JM |
1852 | struct frame_info *fi; |
1853 | int within_scope; | |
1854 | ||
73a93a32 JI |
1855 | /* Only root variables can be updated... */ |
1856 | if (var->root->rootvar != var) | |
1857 | /* Not a root var */ | |
1858 | return NULL; | |
1859 | ||
72330bd6 | 1860 | |
8b93c638 JM |
1861 | /* Determine whether the variable is still around. */ |
1862 | if (var->root->valid_block == NULL) | |
1863 | within_scope = 1; | |
1864 | else | |
1865 | { | |
1866 | reinit_frame_cache (); | |
e64d9b3d | 1867 | fi = frame_find_by_id (var->root->frame); |
8b93c638 JM |
1868 | within_scope = fi != NULL; |
1869 | /* FIXME: select_frame could fail */ | |
1870 | if (within_scope) | |
0f7d239c | 1871 | select_frame (fi); |
8b93c638 | 1872 | } |
72330bd6 | 1873 | |
8b93c638 JM |
1874 | if (within_scope) |
1875 | { | |
73a93a32 | 1876 | /* We need to catch errors here, because if evaluate |
72330bd6 AC |
1877 | expression fails we just want to make val->error = 1 and |
1878 | go on */ | |
8b93c638 JM |
1879 | if (gdb_evaluate_expression (var->root->exp, &new_val)) |
1880 | { | |
1881 | if (VALUE_LAZY (new_val)) | |
1882 | { | |
73a93a32 | 1883 | /* We need to catch errors because if |
72330bd6 AC |
1884 | value_fetch_lazy fails we still want to continue |
1885 | (after making val->error = 1) */ | |
73a93a32 | 1886 | /* FIXME: Shouldn't be using VALUE_CONTENTS? The |
72330bd6 AC |
1887 | comment on value_fetch_lazy() says it is only |
1888 | called from the macro... */ | |
8b93c638 JM |
1889 | if (!gdb_value_fetch_lazy (new_val)) |
1890 | var->error = 1; | |
1891 | else | |
1892 | var->error = 0; | |
1893 | } | |
1894 | } | |
1895 | else | |
1896 | var->error = 1; | |
72330bd6 | 1897 | |
8b93c638 JM |
1898 | release_value (new_val); |
1899 | return new_val; | |
1900 | } | |
1901 | ||
1902 | return NULL; | |
1903 | } | |
1904 | ||
30b28db1 | 1905 | static struct value * |
fba45db2 | 1906 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 1907 | { |
30b28db1 AC |
1908 | struct value *value; |
1909 | struct value *temp; | |
1910 | struct value *indval; | |
8b93c638 JM |
1911 | struct type *type, *target; |
1912 | char *name; | |
1913 | ||
1914 | type = get_type (parent); | |
1915 | target = get_target_type (type); | |
1916 | name = name_of_child (parent, index); | |
1917 | temp = parent->value; | |
1918 | value = NULL; | |
1919 | ||
1920 | if (temp != NULL) | |
1921 | { | |
1922 | switch (TYPE_CODE (type)) | |
1923 | { | |
1924 | case TYPE_CODE_ARRAY: | |
8310b29b | 1925 | #if 0 |
72330bd6 | 1926 | /* This breaks if the array lives in a (vector) register. */ |
8b93c638 JM |
1927 | value = value_slice (temp, index, 1); |
1928 | temp = value_coerce_array (value); | |
1929 | gdb_value_ind (temp, &value); | |
8310b29b FN |
1930 | #else |
1931 | indval = value_from_longest (builtin_type_int, (LONGEST) index); | |
1932 | gdb_value_subscript (temp, indval, &value); | |
1933 | #endif | |
8b93c638 JM |
1934 | break; |
1935 | ||
1936 | case TYPE_CODE_STRUCT: | |
1937 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1938 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1939 | "vstructure"); | |
8b93c638 JM |
1940 | break; |
1941 | ||
1942 | case TYPE_CODE_PTR: | |
1943 | switch (TYPE_CODE (target)) | |
1944 | { | |
1945 | case TYPE_CODE_STRUCT: | |
1946 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1947 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1948 | "vstructure"); | |
8b93c638 JM |
1949 | break; |
1950 | ||
1951 | default: | |
1952 | gdb_value_ind (temp, &value); | |
1953 | break; | |
1954 | } | |
1955 | break; | |
1956 | ||
1957 | default: | |
1958 | break; | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | if (value != NULL) | |
1963 | release_value (value); | |
1964 | ||
5bbc1a8e | 1965 | xfree (name); |
8b93c638 JM |
1966 | return value; |
1967 | } | |
1968 | ||
1969 | static struct type * | |
fba45db2 | 1970 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1971 | { |
1972 | struct type *type; | |
1973 | char *name = name_of_child (parent, index); | |
1974 | ||
1975 | switch (TYPE_CODE (parent->type)) | |
1976 | { | |
1977 | case TYPE_CODE_ARRAY: | |
94b66fa7 | 1978 | type = get_target_type (parent->type); |
8b93c638 JM |
1979 | break; |
1980 | ||
1981 | case TYPE_CODE_STRUCT: | |
1982 | case TYPE_CODE_UNION: | |
1983 | type = lookup_struct_elt_type (parent->type, name, 0); | |
1984 | break; | |
1985 | ||
1986 | case TYPE_CODE_PTR: | |
94b66fa7 | 1987 | switch (TYPE_CODE (get_target_type (parent->type))) |
8b93c638 JM |
1988 | { |
1989 | case TYPE_CODE_STRUCT: | |
1990 | case TYPE_CODE_UNION: | |
1991 | type = lookup_struct_elt_type (parent->type, name, 0); | |
1992 | break; | |
1993 | ||
1994 | default: | |
94b66fa7 | 1995 | type = get_target_type (parent->type); |
8b93c638 JM |
1996 | break; |
1997 | } | |
1998 | break; | |
1999 | ||
2000 | default: | |
2001 | /* This should not happen as only the above types have children */ | |
2002 | warning ("Child of parent whose type does not allow children"); | |
2003 | /* FIXME: Can we still go on? */ | |
2004 | type = NULL; | |
2005 | break; | |
2006 | } | |
2007 | ||
5bbc1a8e | 2008 | xfree (name); |
8b93c638 JM |
2009 | return type; |
2010 | } | |
2011 | ||
2012 | static int | |
fba45db2 | 2013 | c_variable_editable (struct varobj *var) |
8b93c638 JM |
2014 | { |
2015 | switch (TYPE_CODE (get_type (var))) | |
2016 | { | |
2017 | case TYPE_CODE_STRUCT: | |
2018 | case TYPE_CODE_UNION: | |
2019 | case TYPE_CODE_ARRAY: | |
2020 | case TYPE_CODE_FUNC: | |
2021 | case TYPE_CODE_MEMBER: | |
2022 | case TYPE_CODE_METHOD: | |
2023 | return 0; | |
2024 | break; | |
2025 | ||
2026 | default: | |
2027 | return 1; | |
2028 | break; | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | static char * | |
fba45db2 | 2033 | c_value_of_variable (struct varobj *var) |
8b93c638 | 2034 | { |
8b93c638 JM |
2035 | /* BOGUS: if val_print sees a struct/class, it will print out its |
2036 | children instead of "{...}" */ | |
e64d9b3d MH |
2037 | |
2038 | switch (TYPE_CODE (get_type (var))) | |
8b93c638 JM |
2039 | { |
2040 | case TYPE_CODE_STRUCT: | |
2041 | case TYPE_CODE_UNION: | |
2042 | return xstrdup ("{...}"); | |
2043 | /* break; */ | |
2044 | ||
2045 | case TYPE_CODE_ARRAY: | |
2046 | { | |
e64d9b3d MH |
2047 | char *number; |
2048 | xasprintf (&number, "[%d]", var->num_children); | |
2049 | return (number); | |
8b93c638 JM |
2050 | } |
2051 | /* break; */ | |
2052 | ||
2053 | default: | |
2054 | { | |
575bbeb6 KS |
2055 | if (var->value == NULL) |
2056 | { | |
2057 | /* This can happen if we attempt to get the value of a struct | |
2058 | member when the parent is an invalid pointer. This is an | |
2059 | error condition, so we should tell the caller. */ | |
2060 | return NULL; | |
2061 | } | |
2062 | else | |
2063 | { | |
e64d9b3d MH |
2064 | long dummy; |
2065 | struct ui_file *stb = mem_fileopen (); | |
2066 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
2067 | char *thevalue; | |
2068 | ||
575bbeb6 KS |
2069 | if (VALUE_LAZY (var->value)) |
2070 | gdb_value_fetch_lazy (var->value); | |
7f19b9a2 AC |
2071 | val_print (VALUE_TYPE (var->value), |
2072 | VALUE_CONTENTS_RAW (var->value), 0, | |
2073 | VALUE_ADDRESS (var->value), stb, | |
2074 | format_code[(int) var->format], 1, 0, 0); | |
575bbeb6 KS |
2075 | thevalue = ui_file_xstrdup (stb, &dummy); |
2076 | do_cleanups (old_chain); | |
8b93c638 JM |
2077 | return thevalue; |
2078 | } | |
e64d9b3d | 2079 | } |
8b93c638 JM |
2080 | } |
2081 | } | |
2082 | \f | |
2083 | ||
2084 | /* C++ */ | |
2085 | ||
2086 | static int | |
fba45db2 | 2087 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
2088 | { |
2089 | struct type *type; | |
2090 | int children, dont_know; | |
2091 | ||
2092 | dont_know = 1; | |
2093 | children = 0; | |
2094 | ||
2095 | if (!CPLUS_FAKE_CHILD (var)) | |
2096 | { | |
2097 | type = get_type_deref (var); | |
2098 | ||
2099 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 2100 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
2101 | { |
2102 | int kids[3]; | |
2103 | ||
2104 | cplus_class_num_children (type, kids); | |
2105 | if (kids[v_public] != 0) | |
2106 | children++; | |
2107 | if (kids[v_private] != 0) | |
2108 | children++; | |
2109 | if (kids[v_protected] != 0) | |
2110 | children++; | |
2111 | ||
2112 | /* Add any baseclasses */ | |
2113 | children += TYPE_N_BASECLASSES (type); | |
2114 | dont_know = 0; | |
2115 | ||
2116 | /* FIXME: save children in var */ | |
2117 | } | |
2118 | } | |
2119 | else | |
2120 | { | |
2121 | int kids[3]; | |
2122 | ||
2123 | type = get_type_deref (var->parent); | |
2124 | ||
2125 | cplus_class_num_children (type, kids); | |
2126 | if (STREQ (var->name, "public")) | |
2127 | children = kids[v_public]; | |
2128 | else if (STREQ (var->name, "private")) | |
2129 | children = kids[v_private]; | |
2130 | else | |
2131 | children = kids[v_protected]; | |
2132 | dont_know = 0; | |
2133 | } | |
2134 | ||
2135 | if (dont_know) | |
2136 | children = c_number_of_children (var); | |
2137 | ||
2138 | return children; | |
2139 | } | |
2140 | ||
2141 | /* Compute # of public, private, and protected variables in this class. | |
2142 | That means we need to descend into all baseclasses and find out | |
2143 | how many are there, too. */ | |
2144 | static void | |
1669605f | 2145 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 JM |
2146 | { |
2147 | int i; | |
2148 | ||
2149 | children[v_public] = 0; | |
2150 | children[v_private] = 0; | |
2151 | children[v_protected] = 0; | |
2152 | ||
2153 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) | |
2154 | { | |
2155 | /* If we have a virtual table pointer, omit it. */ | |
72330bd6 | 2156 | if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i) |
8b93c638 JM |
2157 | continue; |
2158 | ||
2159 | if (TYPE_FIELD_PROTECTED (type, i)) | |
2160 | children[v_protected]++; | |
2161 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
2162 | children[v_private]++; | |
2163 | else | |
2164 | children[v_public]++; | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | static char * | |
fba45db2 | 2169 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2170 | { |
2171 | return c_name_of_variable (parent); | |
2172 | } | |
2173 | ||
2174 | static char * | |
fba45db2 | 2175 | cplus_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2176 | { |
2177 | char *name; | |
2178 | struct type *type; | |
2179 | int children[3]; | |
2180 | ||
2181 | if (CPLUS_FAKE_CHILD (parent)) | |
2182 | { | |
2183 | /* Looking for children of public, private, or protected. */ | |
2184 | type = get_type_deref (parent->parent); | |
2185 | } | |
2186 | else | |
2187 | type = get_type_deref (parent); | |
2188 | ||
2189 | name = NULL; | |
2190 | switch (TYPE_CODE (type)) | |
2191 | { | |
2192 | case TYPE_CODE_STRUCT: | |
2193 | case TYPE_CODE_UNION: | |
2194 | cplus_class_num_children (type, children); | |
2195 | ||
2196 | if (CPLUS_FAKE_CHILD (parent)) | |
2197 | { | |
575bbeb6 KS |
2198 | int i; |
2199 | ||
2200 | /* Skip over vptr, if it exists. */ | |
2201 | if (TYPE_VPTR_BASETYPE (type) == type | |
2202 | && index >= TYPE_VPTR_FIELDNO (type)) | |
2203 | index++; | |
2204 | ||
8b93c638 JM |
2205 | /* FIXME: This assumes that type orders |
2206 | inherited, public, private, protected */ | |
575bbeb6 | 2207 | i = index + TYPE_N_BASECLASSES (type); |
7f19b9a2 AC |
2208 | if (STREQ (parent->name, "private") |
2209 | || STREQ (parent->name, "protected")) | |
8b93c638 JM |
2210 | i += children[v_public]; |
2211 | if (STREQ (parent->name, "protected")) | |
2212 | i += children[v_private]; | |
2213 | ||
2214 | name = TYPE_FIELD_NAME (type, i); | |
2215 | } | |
2216 | else if (index < TYPE_N_BASECLASSES (type)) | |
2217 | name = TYPE_FIELD_NAME (type, index); | |
2218 | else | |
2219 | { | |
2220 | /* Everything beyond the baseclasses can | |
2221 | only be "public", "private", or "protected" */ | |
2222 | index -= TYPE_N_BASECLASSES (type); | |
2223 | switch (index) | |
2224 | { | |
2225 | case 0: | |
2226 | if (children[v_public] != 0) | |
2227 | { | |
2228 | name = "public"; | |
2229 | break; | |
2230 | } | |
2231 | case 1: | |
2232 | if (children[v_private] != 0) | |
2233 | { | |
2234 | name = "private"; | |
2235 | break; | |
2236 | } | |
2237 | case 2: | |
2238 | if (children[v_protected] != 0) | |
2239 | { | |
2240 | name = "protected"; | |
2241 | break; | |
2242 | } | |
2243 | default: | |
2244 | /* error! */ | |
2245 | break; | |
2246 | } | |
2247 | } | |
2248 | break; | |
2249 | ||
2250 | default: | |
2251 | break; | |
2252 | } | |
2253 | ||
2254 | if (name == NULL) | |
2255 | return c_name_of_child (parent, index); | |
2256 | else | |
2257 | { | |
2258 | if (name != NULL) | |
2259 | name = savestring (name, strlen (name)); | |
2260 | } | |
2261 | ||
2262 | return name; | |
2263 | } | |
2264 | ||
30b28db1 | 2265 | static struct value * |
fba45db2 | 2266 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 2267 | { |
73a93a32 | 2268 | return c_value_of_root (var_handle); |
8b93c638 JM |
2269 | } |
2270 | ||
30b28db1 | 2271 | static struct value * |
fba45db2 | 2272 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2273 | { |
2274 | struct type *type; | |
30b28db1 | 2275 | struct value *value; |
8b93c638 JM |
2276 | |
2277 | if (CPLUS_FAKE_CHILD (parent)) | |
2278 | type = get_type_deref (parent->parent); | |
2279 | else | |
2280 | type = get_type_deref (parent); | |
2281 | ||
2282 | value = NULL; | |
8b93c638 JM |
2283 | |
2284 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
2285 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) | |
2286 | { | |
2287 | if (CPLUS_FAKE_CHILD (parent)) | |
2288 | { | |
5bbc1a8e | 2289 | char *name; |
30b28db1 | 2290 | struct value *temp = parent->parent->value; |
30c6b1fb | 2291 | |
575bbeb6 KS |
2292 | if (temp == NULL) |
2293 | return NULL; | |
2294 | ||
5bbc1a8e | 2295 | name = name_of_child (parent, index); |
30c6b1fb KS |
2296 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
2297 | "cplus_structure"); | |
2298 | if (value != NULL) | |
2299 | release_value (value); | |
5bbc1a8e KS |
2300 | |
2301 | xfree (name); | |
8b93c638 JM |
2302 | } |
2303 | else if (index >= TYPE_N_BASECLASSES (type)) | |
2304 | { | |
2305 | /* public, private, or protected */ | |
2306 | return NULL; | |
2307 | } | |
2308 | else | |
2309 | { | |
2310 | /* Baseclass */ | |
2311 | if (parent->value != NULL) | |
2312 | { | |
575bbeb6 | 2313 | struct value *temp = NULL; |
8b93c638 JM |
2314 | |
2315 | if (TYPE_CODE (VALUE_TYPE (parent->value)) == TYPE_CODE_PTR | |
2316 | || TYPE_CODE (VALUE_TYPE (parent->value)) == TYPE_CODE_REF) | |
4abb499e KS |
2317 | { |
2318 | if (!gdb_value_ind (parent->value, &temp)) | |
2319 | return NULL; | |
2320 | } | |
8b93c638 JM |
2321 | else |
2322 | temp = parent->value; | |
2323 | ||
575bbeb6 KS |
2324 | if (temp != NULL) |
2325 | { | |
2326 | value = value_cast (TYPE_FIELD_TYPE (type, index), temp); | |
2327 | release_value (value); | |
2328 | } | |
2329 | else | |
2330 | { | |
2331 | /* We failed to evaluate the parent's value, so don't even | |
2332 | bother trying to evaluate this child. */ | |
2333 | return NULL; | |
2334 | } | |
8b93c638 JM |
2335 | } |
2336 | } | |
2337 | } | |
2338 | ||
2339 | if (value == NULL) | |
2340 | return c_value_of_child (parent, index); | |
2341 | ||
2342 | return value; | |
2343 | } | |
2344 | ||
2345 | static struct type * | |
fba45db2 | 2346 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2347 | { |
2348 | struct type *type, *t; | |
2349 | ||
575bbeb6 KS |
2350 | if (CPLUS_FAKE_CHILD (parent)) |
2351 | { | |
2352 | /* Looking for the type of a child of public, private, or protected. */ | |
2353 | t = get_type_deref (parent->parent); | |
2354 | } | |
2355 | else | |
2356 | t = get_type_deref (parent); | |
2357 | ||
8b93c638 JM |
2358 | type = NULL; |
2359 | switch (TYPE_CODE (t)) | |
2360 | { | |
2361 | case TYPE_CODE_STRUCT: | |
2362 | case TYPE_CODE_UNION: | |
575bbeb6 | 2363 | if (CPLUS_FAKE_CHILD (parent)) |
8b93c638 | 2364 | { |
575bbeb6 KS |
2365 | char *name = cplus_name_of_child (parent, index); |
2366 | type = lookup_struct_elt_type (t, name, 0); | |
2367 | xfree (name); | |
8b93c638 | 2368 | } |
575bbeb6 KS |
2369 | else if (index < TYPE_N_BASECLASSES (t)) |
2370 | type = TYPE_FIELD_TYPE (t, index); | |
8b93c638 JM |
2371 | else |
2372 | { | |
575bbeb6 KS |
2373 | /* special */ |
2374 | return NULL; | |
8b93c638 JM |
2375 | } |
2376 | break; | |
2377 | ||
2378 | default: | |
2379 | break; | |
2380 | } | |
2381 | ||
2382 | if (type == NULL) | |
2383 | return c_type_of_child (parent, index); | |
2384 | ||
2385 | return type; | |
2386 | } | |
2387 | ||
2388 | static int | |
fba45db2 | 2389 | cplus_variable_editable (struct varobj *var) |
8b93c638 JM |
2390 | { |
2391 | if (CPLUS_FAKE_CHILD (var)) | |
2392 | return 0; | |
2393 | ||
2394 | return c_variable_editable (var); | |
2395 | } | |
2396 | ||
2397 | static char * | |
fba45db2 | 2398 | cplus_value_of_variable (struct varobj *var) |
8b93c638 JM |
2399 | { |
2400 | ||
2401 | /* If we have one of our special types, don't print out | |
2402 | any value. */ | |
2403 | if (CPLUS_FAKE_CHILD (var)) | |
2404 | return xstrdup (""); | |
2405 | ||
2406 | return c_value_of_variable (var); | |
2407 | } | |
2408 | \f | |
2409 | /* Java */ | |
2410 | ||
2411 | static int | |
fba45db2 | 2412 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
2413 | { |
2414 | return cplus_number_of_children (var); | |
2415 | } | |
2416 | ||
2417 | static char * | |
fba45db2 | 2418 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2419 | { |
2420 | char *p, *name; | |
2421 | ||
2422 | name = cplus_name_of_variable (parent); | |
2423 | /* If the name has "-" in it, it is because we | |
2424 | needed to escape periods in the name... */ | |
2425 | p = name; | |
2426 | ||
2427 | while (*p != '\000') | |
2428 | { | |
2429 | if (*p == '-') | |
2430 | *p = '.'; | |
2431 | p++; | |
2432 | } | |
2433 | ||
2434 | return name; | |
2435 | } | |
2436 | ||
2437 | static char * | |
fba45db2 | 2438 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2439 | { |
2440 | char *name, *p; | |
2441 | ||
2442 | name = cplus_name_of_child (parent, index); | |
2443 | /* Escape any periods in the name... */ | |
2444 | p = name; | |
2445 | ||
2446 | while (*p != '\000') | |
2447 | { | |
2448 | if (*p == '.') | |
2449 | *p = '-'; | |
2450 | p++; | |
2451 | } | |
2452 | ||
2453 | return name; | |
2454 | } | |
2455 | ||
30b28db1 | 2456 | static struct value * |
fba45db2 | 2457 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 2458 | { |
73a93a32 | 2459 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
2460 | } |
2461 | ||
30b28db1 | 2462 | static struct value * |
fba45db2 | 2463 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2464 | { |
2465 | return cplus_value_of_child (parent, index); | |
2466 | } | |
2467 | ||
2468 | static struct type * | |
fba45db2 | 2469 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2470 | { |
2471 | return cplus_type_of_child (parent, index); | |
2472 | } | |
2473 | ||
2474 | static int | |
fba45db2 | 2475 | java_variable_editable (struct varobj *var) |
8b93c638 JM |
2476 | { |
2477 | return cplus_variable_editable (var); | |
2478 | } | |
2479 | ||
2480 | static char * | |
fba45db2 | 2481 | java_value_of_variable (struct varobj *var) |
8b93c638 JM |
2482 | { |
2483 | return cplus_value_of_variable (var); | |
2484 | } | |
2485 | \f | |
2486 | extern void _initialize_varobj (void); | |
2487 | void | |
2488 | _initialize_varobj (void) | |
2489 | { | |
2490 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
2491 | ||
2492 | varobj_table = xmalloc (sizeof_table); | |
2493 | memset (varobj_table, 0, sizeof_table); | |
2494 | ||
72330bd6 | 2495 | add_show_from_set (add_set_cmd ("debugvarobj", class_maintenance, var_zinteger, (char *) &varobjdebug, "Set varobj debugging.\n\ |
8b93c638 | 2496 | When non-zero, varobj debugging is enabled.", &setlist), |
72330bd6 | 2497 | &showlist); |
8b93c638 | 2498 | } |