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8b93c638 | 1 | /* Implementation of the GDB variable objects API. |
bc8332bb AC |
2 | |
3 | Copyright 1999, 2000, 2001, 2005 Free Software Foundation, Inc. | |
8b93c638 JM |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "defs.h" | |
a6c442d8 | 21 | #include "exceptions.h" |
8b93c638 JM |
22 | #include "value.h" |
23 | #include "expression.h" | |
24 | #include "frame.h" | |
8b93c638 JM |
25 | #include "language.h" |
26 | #include "wrapper.h" | |
27 | #include "gdbcmd.h" | |
a6c442d8 MK |
28 | |
29 | #include "gdb_assert.h" | |
b66d6d2e | 30 | #include "gdb_string.h" |
8b93c638 JM |
31 | |
32 | #include "varobj.h" | |
33 | ||
34 | /* Non-zero if we want to see trace of varobj level stuff. */ | |
35 | ||
36 | int varobjdebug = 0; | |
37 | ||
38 | /* String representations of gdb's format codes */ | |
39 | char *varobj_format_string[] = | |
72330bd6 | 40 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 JM |
41 | |
42 | /* String representations of gdb's known languages */ | |
72330bd6 | 43 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 JM |
44 | |
45 | /* Data structures */ | |
46 | ||
47 | /* Every root variable has one of these structures saved in its | |
48 | varobj. Members which must be free'd are noted. */ | |
49 | struct varobj_root | |
72330bd6 | 50 | { |
8b93c638 | 51 | |
72330bd6 AC |
52 | /* Alloc'd expression for this parent. */ |
53 | struct expression *exp; | |
8b93c638 | 54 | |
72330bd6 AC |
55 | /* Block for which this expression is valid */ |
56 | struct block *valid_block; | |
8b93c638 | 57 | |
72330bd6 | 58 | /* The frame for this expression */ |
e64d9b3d | 59 | struct frame_id frame; |
8b93c638 | 60 | |
72330bd6 AC |
61 | /* If 1, "update" always recomputes the frame & valid block |
62 | using the currently selected frame. */ | |
63 | int use_selected_frame; | |
73a93a32 | 64 | |
72330bd6 AC |
65 | /* Language info for this variable and its children */ |
66 | struct language_specific *lang; | |
8b93c638 | 67 | |
72330bd6 AC |
68 | /* The varobj for this root node. */ |
69 | struct varobj *rootvar; | |
8b93c638 | 70 | |
72330bd6 AC |
71 | /* Next root variable */ |
72 | struct varobj_root *next; | |
73 | }; | |
8b93c638 JM |
74 | |
75 | /* Every variable in the system has a structure of this type defined | |
76 | for it. This structure holds all information necessary to manipulate | |
77 | a particular object variable. Members which must be freed are noted. */ | |
78 | struct varobj | |
72330bd6 | 79 | { |
8b93c638 | 80 | |
72330bd6 AC |
81 | /* Alloc'd name of the variable for this object.. If this variable is a |
82 | child, then this name will be the child's source name. | |
83 | (bar, not foo.bar) */ | |
84 | /* NOTE: This is the "expression" */ | |
85 | char *name; | |
8b93c638 | 86 | |
72330bd6 AC |
87 | /* The alloc'd name for this variable's object. This is here for |
88 | convenience when constructing this object's children. */ | |
89 | char *obj_name; | |
8b93c638 | 90 | |
72330bd6 AC |
91 | /* Index of this variable in its parent or -1 */ |
92 | int index; | |
8b93c638 | 93 | |
72330bd6 AC |
94 | /* The type of this variable. This may NEVER be NULL. */ |
95 | struct type *type; | |
8b93c638 | 96 | |
72330bd6 | 97 | /* The value of this expression or subexpression. This may be NULL. */ |
30b28db1 | 98 | struct value *value; |
8b93c638 | 99 | |
72330bd6 AC |
100 | /* Did an error occur evaluating the expression or getting its value? */ |
101 | int error; | |
8b93c638 | 102 | |
72330bd6 AC |
103 | /* The number of (immediate) children this variable has */ |
104 | int num_children; | |
8b93c638 | 105 | |
72330bd6 AC |
106 | /* If this object is a child, this points to its immediate parent. */ |
107 | struct varobj *parent; | |
8b93c638 | 108 | |
72330bd6 AC |
109 | /* A list of this object's children */ |
110 | struct varobj_child *children; | |
8b93c638 | 111 | |
72330bd6 AC |
112 | /* Description of the root variable. Points to root variable for children. */ |
113 | struct varobj_root *root; | |
8b93c638 | 114 | |
72330bd6 AC |
115 | /* The format of the output for this object */ |
116 | enum varobj_display_formats format; | |
fb9b6b35 JJ |
117 | |
118 | /* Was this variable updated via a varobj_set_value operation */ | |
119 | int updated; | |
72330bd6 | 120 | }; |
8b93c638 JM |
121 | |
122 | /* Every variable keeps a linked list of its children, described | |
123 | by the following structure. */ | |
124 | /* FIXME: Deprecated. All should use vlist instead */ | |
125 | ||
126 | struct varobj_child | |
72330bd6 | 127 | { |
8b93c638 | 128 | |
72330bd6 AC |
129 | /* Pointer to the child's data */ |
130 | struct varobj *child; | |
8b93c638 | 131 | |
72330bd6 AC |
132 | /* Pointer to the next child */ |
133 | struct varobj_child *next; | |
134 | }; | |
8b93c638 JM |
135 | |
136 | /* A stack of varobjs */ | |
137 | /* FIXME: Deprecated. All should use vlist instead */ | |
138 | ||
139 | struct vstack | |
72330bd6 AC |
140 | { |
141 | struct varobj *var; | |
142 | struct vstack *next; | |
143 | }; | |
8b93c638 JM |
144 | |
145 | struct cpstack | |
72330bd6 AC |
146 | { |
147 | char *name; | |
148 | struct cpstack *next; | |
149 | }; | |
8b93c638 JM |
150 | |
151 | /* A list of varobjs */ | |
152 | ||
153 | struct vlist | |
72330bd6 AC |
154 | { |
155 | struct varobj *var; | |
156 | struct vlist *next; | |
157 | }; | |
8b93c638 JM |
158 | |
159 | /* Private function prototypes */ | |
160 | ||
161 | /* Helper functions for the above subcommands. */ | |
162 | ||
a14ed312 | 163 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 164 | |
a14ed312 KB |
165 | static void delete_variable_1 (struct cpstack **, int *, |
166 | struct varobj *, int, int); | |
8b93c638 | 167 | |
a14ed312 | 168 | static int install_variable (struct varobj *); |
8b93c638 | 169 | |
a14ed312 | 170 | static void uninstall_variable (struct varobj *); |
8b93c638 | 171 | |
a14ed312 | 172 | static struct varobj *child_exists (struct varobj *, char *); |
8b93c638 | 173 | |
a14ed312 | 174 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 175 | |
a14ed312 | 176 | static void save_child_in_parent (struct varobj *, struct varobj *); |
8b93c638 | 177 | |
a14ed312 | 178 | static void remove_child_from_parent (struct varobj *, struct varobj *); |
8b93c638 JM |
179 | |
180 | /* Utility routines */ | |
181 | ||
a14ed312 | 182 | static struct varobj *new_variable (void); |
8b93c638 | 183 | |
a14ed312 | 184 | static struct varobj *new_root_variable (void); |
8b93c638 | 185 | |
a14ed312 | 186 | static void free_variable (struct varobj *var); |
8b93c638 | 187 | |
74b7792f AC |
188 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
189 | ||
a14ed312 | 190 | static struct type *get_type (struct varobj *var); |
8b93c638 | 191 | |
a14ed312 | 192 | static struct type *get_type_deref (struct varobj *var); |
8b93c638 | 193 | |
a14ed312 | 194 | static struct type *get_target_type (struct type *); |
8b93c638 | 195 | |
a14ed312 | 196 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 197 | |
30b28db1 | 198 | static int my_value_equal (struct value *, struct value *, int *); |
8b93c638 | 199 | |
a14ed312 | 200 | static void vpush (struct vstack **pstack, struct varobj *var); |
8b93c638 | 201 | |
a14ed312 | 202 | static struct varobj *vpop (struct vstack **pstack); |
8b93c638 | 203 | |
a14ed312 | 204 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 205 | |
a14ed312 | 206 | static char *cppop (struct cpstack **pstack); |
8b93c638 JM |
207 | |
208 | /* Language-specific routines. */ | |
209 | ||
a14ed312 | 210 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 211 | |
a14ed312 | 212 | static int number_of_children (struct varobj *); |
8b93c638 | 213 | |
a14ed312 | 214 | static char *name_of_variable (struct varobj *); |
8b93c638 | 215 | |
a14ed312 | 216 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 217 | |
30b28db1 | 218 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 219 | |
30b28db1 | 220 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 221 | |
a14ed312 | 222 | static struct type *type_of_child (struct varobj *var); |
8b93c638 | 223 | |
a14ed312 | 224 | static int variable_editable (struct varobj *var); |
8b93c638 | 225 | |
a14ed312 | 226 | static char *my_value_of_variable (struct varobj *var); |
8b93c638 | 227 | |
a14ed312 | 228 | static int type_changeable (struct varobj *var); |
8b93c638 JM |
229 | |
230 | /* C implementation */ | |
231 | ||
a14ed312 | 232 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 233 | |
a14ed312 | 234 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 235 | |
a14ed312 | 236 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 237 | |
30b28db1 | 238 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 239 | |
30b28db1 | 240 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 241 | |
a14ed312 | 242 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 243 | |
a14ed312 | 244 | static int c_variable_editable (struct varobj *var); |
8b93c638 | 245 | |
a14ed312 | 246 | static char *c_value_of_variable (struct varobj *var); |
8b93c638 JM |
247 | |
248 | /* C++ implementation */ | |
249 | ||
a14ed312 | 250 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 251 | |
a14ed312 | 252 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 253 | |
a14ed312 | 254 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 255 | |
a14ed312 | 256 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 257 | |
30b28db1 | 258 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 259 | |
30b28db1 | 260 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 261 | |
a14ed312 | 262 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 263 | |
a14ed312 | 264 | static int cplus_variable_editable (struct varobj *var); |
8b93c638 | 265 | |
a14ed312 | 266 | static char *cplus_value_of_variable (struct varobj *var); |
8b93c638 JM |
267 | |
268 | /* Java implementation */ | |
269 | ||
a14ed312 | 270 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 271 | |
a14ed312 | 272 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 273 | |
a14ed312 | 274 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 275 | |
30b28db1 | 276 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 277 | |
30b28db1 | 278 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 279 | |
a14ed312 | 280 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 281 | |
a14ed312 | 282 | static int java_variable_editable (struct varobj *var); |
8b93c638 | 283 | |
a14ed312 | 284 | static char *java_value_of_variable (struct varobj *var); |
8b93c638 JM |
285 | |
286 | /* The language specific vector */ | |
287 | ||
288 | struct language_specific | |
72330bd6 | 289 | { |
8b93c638 | 290 | |
72330bd6 AC |
291 | /* The language of this variable */ |
292 | enum varobj_languages language; | |
8b93c638 | 293 | |
72330bd6 AC |
294 | /* The number of children of PARENT. */ |
295 | int (*number_of_children) (struct varobj * parent); | |
8b93c638 | 296 | |
72330bd6 AC |
297 | /* The name (expression) of a root varobj. */ |
298 | char *(*name_of_variable) (struct varobj * parent); | |
8b93c638 | 299 | |
72330bd6 AC |
300 | /* The name of the INDEX'th child of PARENT. */ |
301 | char *(*name_of_child) (struct varobj * parent, int index); | |
8b93c638 | 302 | |
30b28db1 AC |
303 | /* The ``struct value *'' of the root variable ROOT. */ |
304 | struct value *(*value_of_root) (struct varobj ** root_handle); | |
8b93c638 | 305 | |
30b28db1 AC |
306 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
307 | struct value *(*value_of_child) (struct varobj * parent, int index); | |
8b93c638 | 308 | |
72330bd6 AC |
309 | /* The type of the INDEX'th child of PARENT. */ |
310 | struct type *(*type_of_child) (struct varobj * parent, int index); | |
8b93c638 | 311 | |
72330bd6 AC |
312 | /* Is VAR editable? */ |
313 | int (*variable_editable) (struct varobj * var); | |
8b93c638 | 314 | |
72330bd6 AC |
315 | /* The current value of VAR. */ |
316 | char *(*value_of_variable) (struct varobj * var); | |
317 | }; | |
8b93c638 JM |
318 | |
319 | /* Array of known source language routines. */ | |
320 | static struct language_specific | |
72330bd6 | 321 | languages[vlang_end][sizeof (struct language_specific)] = { |
8b93c638 JM |
322 | /* Unknown (try treating as C */ |
323 | { | |
72330bd6 AC |
324 | vlang_unknown, |
325 | c_number_of_children, | |
326 | c_name_of_variable, | |
327 | c_name_of_child, | |
328 | c_value_of_root, | |
329 | c_value_of_child, | |
330 | c_type_of_child, | |
331 | c_variable_editable, | |
332 | c_value_of_variable} | |
8b93c638 JM |
333 | , |
334 | /* C */ | |
335 | { | |
72330bd6 AC |
336 | vlang_c, |
337 | c_number_of_children, | |
338 | c_name_of_variable, | |
339 | c_name_of_child, | |
340 | c_value_of_root, | |
341 | c_value_of_child, | |
342 | c_type_of_child, | |
343 | c_variable_editable, | |
344 | c_value_of_variable} | |
8b93c638 JM |
345 | , |
346 | /* C++ */ | |
347 | { | |
72330bd6 AC |
348 | vlang_cplus, |
349 | cplus_number_of_children, | |
350 | cplus_name_of_variable, | |
351 | cplus_name_of_child, | |
352 | cplus_value_of_root, | |
353 | cplus_value_of_child, | |
354 | cplus_type_of_child, | |
355 | cplus_variable_editable, | |
356 | cplus_value_of_variable} | |
8b93c638 JM |
357 | , |
358 | /* Java */ | |
359 | { | |
72330bd6 AC |
360 | vlang_java, |
361 | java_number_of_children, | |
362 | java_name_of_variable, | |
363 | java_name_of_child, | |
364 | java_value_of_root, | |
365 | java_value_of_child, | |
366 | java_type_of_child, | |
367 | java_variable_editable, | |
368 | java_value_of_variable} | |
8b93c638 JM |
369 | }; |
370 | ||
371 | /* A little convenience enum for dealing with C++/Java */ | |
372 | enum vsections | |
72330bd6 AC |
373 | { |
374 | v_public = 0, v_private, v_protected | |
375 | }; | |
8b93c638 JM |
376 | |
377 | /* Private data */ | |
378 | ||
379 | /* Mappings of varobj_display_formats enums to gdb's format codes */ | |
72330bd6 | 380 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 JM |
381 | |
382 | /* Header of the list of root variable objects */ | |
383 | static struct varobj_root *rootlist; | |
384 | static int rootcount = 0; /* number of root varobjs in the list */ | |
385 | ||
386 | /* Prime number indicating the number of buckets in the hash table */ | |
387 | /* A prime large enough to avoid too many colisions */ | |
388 | #define VAROBJ_TABLE_SIZE 227 | |
389 | ||
390 | /* Pointer to the varobj hash table (built at run time) */ | |
391 | static struct vlist **varobj_table; | |
392 | ||
8b93c638 JM |
393 | /* Is the variable X one of our "fake" children? */ |
394 | #define CPLUS_FAKE_CHILD(x) \ | |
395 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
396 | \f | |
397 | ||
398 | /* API Implementation */ | |
399 | ||
400 | /* Creates a varobj (not its children) */ | |
401 | ||
7d8547c9 AC |
402 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
403 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ | |
404 | ||
405 | static struct frame_info * | |
406 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) | |
407 | { | |
408 | struct frame_info *frame = NULL; | |
409 | ||
410 | if (frame_addr == (CORE_ADDR) 0) | |
411 | return NULL; | |
412 | ||
413 | while (1) | |
414 | { | |
415 | frame = get_prev_frame (frame); | |
416 | if (frame == NULL) | |
417 | return NULL; | |
eb5492fa | 418 | if (get_frame_base_address (frame) == frame_addr) |
7d8547c9 AC |
419 | return frame; |
420 | } | |
421 | } | |
422 | ||
8b93c638 JM |
423 | struct varobj * |
424 | varobj_create (char *objname, | |
72330bd6 | 425 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
426 | { |
427 | struct varobj *var; | |
2c67cb8b AC |
428 | struct frame_info *fi; |
429 | struct frame_info *old_fi = NULL; | |
8b93c638 JM |
430 | struct block *block; |
431 | struct cleanup *old_chain; | |
432 | ||
433 | /* Fill out a varobj structure for the (root) variable being constructed. */ | |
434 | var = new_root_variable (); | |
74b7792f | 435 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
436 | |
437 | if (expression != NULL) | |
438 | { | |
439 | char *p; | |
440 | enum varobj_languages lang; | |
441 | ||
442 | /* Parse and evaluate the expression, filling in as much | |
443 | of the variable's data as possible */ | |
444 | ||
445 | /* Allow creator to specify context of variable */ | |
72330bd6 | 446 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
6e7f8b9c | 447 | fi = deprecated_selected_frame; |
8b93c638 | 448 | else |
7d8547c9 AC |
449 | /* FIXME: cagney/2002-11-23: This code should be doing a |
450 | lookup using the frame ID and not just the frame's | |
451 | ``address''. This, of course, means an interface change. | |
452 | However, with out that interface change ISAs, such as the | |
453 | ia64 with its two stacks, won't work. Similar goes for the | |
454 | case where there is a frameless function. */ | |
8b93c638 JM |
455 | fi = find_frame_addr_in_frame_chain (frame); |
456 | ||
73a93a32 JI |
457 | /* frame = -2 means always use selected frame */ |
458 | if (type == USE_SELECTED_FRAME) | |
459 | var->root->use_selected_frame = 1; | |
460 | ||
8b93c638 JM |
461 | block = NULL; |
462 | if (fi != NULL) | |
ae767bfb | 463 | block = get_frame_block (fi, 0); |
8b93c638 JM |
464 | |
465 | p = expression; | |
466 | innermost_block = NULL; | |
73a93a32 JI |
467 | /* Wrap the call to parse expression, so we can |
468 | return a sensible error. */ | |
469 | if (!gdb_parse_exp_1 (&p, block, 0, &var->root->exp)) | |
470 | { | |
471 | return NULL; | |
472 | } | |
8b93c638 JM |
473 | |
474 | /* Don't allow variables to be created for types. */ | |
475 | if (var->root->exp->elts[0].opcode == OP_TYPE) | |
476 | { | |
477 | do_cleanups (old_chain); | |
bc8332bb AC |
478 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
479 | " as an expression.\n"); | |
8b93c638 JM |
480 | return NULL; |
481 | } | |
482 | ||
483 | var->format = variable_default_display (var); | |
484 | var->root->valid_block = innermost_block; | |
485 | var->name = savestring (expression, strlen (expression)); | |
486 | ||
487 | /* When the frame is different from the current frame, | |
488 | we must select the appropriate frame before parsing | |
489 | the expression, otherwise the value will not be current. | |
490 | Since select_frame is so benign, just call it for all cases. */ | |
491 | if (fi != NULL) | |
492 | { | |
7a424e99 | 493 | var->root->frame = get_frame_id (fi); |
6e7f8b9c | 494 | old_fi = deprecated_selected_frame; |
0f7d239c | 495 | select_frame (fi); |
8b93c638 JM |
496 | } |
497 | ||
498 | /* We definitively need to catch errors here. | |
499 | If evaluate_expression succeeds we got the value we wanted. | |
500 | But if it fails, we still go on with a call to evaluate_type() */ | |
501 | if (gdb_evaluate_expression (var->root->exp, &var->value)) | |
502 | { | |
503 | /* no error */ | |
504 | release_value (var->value); | |
d69fe07e | 505 | if (value_lazy (var->value)) |
8b93c638 JM |
506 | gdb_value_fetch_lazy (var->value); |
507 | } | |
508 | else | |
509 | var->value = evaluate_type (var->root->exp); | |
510 | ||
df407dfe | 511 | var->type = value_type (var->value); |
8b93c638 JM |
512 | |
513 | /* Set language info */ | |
514 | lang = variable_language (var); | |
515 | var->root->lang = languages[lang]; | |
516 | ||
517 | /* Set ourselves as our root */ | |
518 | var->root->rootvar = var; | |
519 | ||
520 | /* Reset the selected frame */ | |
521 | if (fi != NULL) | |
0f7d239c | 522 | select_frame (old_fi); |
8b93c638 JM |
523 | } |
524 | ||
73a93a32 JI |
525 | /* If the variable object name is null, that means this |
526 | is a temporary variable, so don't install it. */ | |
527 | ||
528 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 JM |
529 | { |
530 | var->obj_name = savestring (objname, strlen (objname)); | |
531 | ||
532 | /* If a varobj name is duplicated, the install will fail so | |
533 | we must clenup */ | |
534 | if (!install_variable (var)) | |
535 | { | |
536 | do_cleanups (old_chain); | |
537 | return NULL; | |
538 | } | |
539 | } | |
540 | ||
541 | discard_cleanups (old_chain); | |
542 | return var; | |
543 | } | |
544 | ||
545 | /* Generates an unique name that can be used for a varobj */ | |
546 | ||
547 | char * | |
548 | varobj_gen_name (void) | |
549 | { | |
550 | static int id = 0; | |
e64d9b3d | 551 | char *obj_name; |
8b93c638 JM |
552 | |
553 | /* generate a name for this object */ | |
554 | id++; | |
b435e160 | 555 | obj_name = xstrprintf ("var%d", id); |
8b93c638 | 556 | |
e64d9b3d | 557 | return obj_name; |
8b93c638 JM |
558 | } |
559 | ||
560 | /* Given an "objname", returns the pointer to the corresponding varobj | |
561 | or NULL if not found */ | |
562 | ||
563 | struct varobj * | |
564 | varobj_get_handle (char *objname) | |
565 | { | |
566 | struct vlist *cv; | |
567 | const char *chp; | |
568 | unsigned int index = 0; | |
569 | unsigned int i = 1; | |
570 | ||
571 | for (chp = objname; *chp; chp++) | |
572 | { | |
573 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
574 | } | |
575 | ||
576 | cv = *(varobj_table + index); | |
577 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
578 | cv = cv->next; | |
579 | ||
580 | if (cv == NULL) | |
8a3fe4f8 | 581 | error (_("Variable object not found")); |
8b93c638 JM |
582 | |
583 | return cv->var; | |
584 | } | |
585 | ||
586 | /* Given the handle, return the name of the object */ | |
587 | ||
588 | char * | |
589 | varobj_get_objname (struct varobj *var) | |
590 | { | |
591 | return var->obj_name; | |
592 | } | |
593 | ||
594 | /* Given the handle, return the expression represented by the object */ | |
595 | ||
596 | char * | |
597 | varobj_get_expression (struct varobj *var) | |
598 | { | |
599 | return name_of_variable (var); | |
600 | } | |
601 | ||
602 | /* Deletes a varobj and all its children if only_children == 0, | |
603 | otherwise deletes only the children; returns a malloc'ed list of all the | |
604 | (malloc'ed) names of the variables that have been deleted (NULL terminated) */ | |
605 | ||
606 | int | |
607 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
608 | { | |
609 | int delcount; | |
610 | int mycount; | |
611 | struct cpstack *result = NULL; | |
612 | char **cp; | |
613 | ||
614 | /* Initialize a stack for temporary results */ | |
615 | cppush (&result, NULL); | |
616 | ||
617 | if (only_children) | |
618 | /* Delete only the variable children */ | |
619 | delcount = delete_variable (&result, var, 1 /* only the children */ ); | |
620 | else | |
621 | /* Delete the variable and all its children */ | |
622 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); | |
623 | ||
624 | /* We may have been asked to return a list of what has been deleted */ | |
625 | if (dellist != NULL) | |
626 | { | |
627 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
628 | ||
629 | cp = *dellist; | |
630 | mycount = delcount; | |
631 | *cp = cppop (&result); | |
632 | while ((*cp != NULL) && (mycount > 0)) | |
633 | { | |
634 | mycount--; | |
635 | cp++; | |
636 | *cp = cppop (&result); | |
637 | } | |
638 | ||
639 | if (mycount || (*cp != NULL)) | |
8a3fe4f8 | 640 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
72330bd6 | 641 | mycount); |
8b93c638 JM |
642 | } |
643 | ||
644 | return delcount; | |
645 | } | |
646 | ||
647 | /* Set/Get variable object display format */ | |
648 | ||
649 | enum varobj_display_formats | |
650 | varobj_set_display_format (struct varobj *var, | |
651 | enum varobj_display_formats format) | |
652 | { | |
653 | switch (format) | |
654 | { | |
655 | case FORMAT_NATURAL: | |
656 | case FORMAT_BINARY: | |
657 | case FORMAT_DECIMAL: | |
658 | case FORMAT_HEXADECIMAL: | |
659 | case FORMAT_OCTAL: | |
660 | var->format = format; | |
661 | break; | |
662 | ||
663 | default: | |
664 | var->format = variable_default_display (var); | |
665 | } | |
666 | ||
667 | return var->format; | |
668 | } | |
669 | ||
670 | enum varobj_display_formats | |
671 | varobj_get_display_format (struct varobj *var) | |
672 | { | |
673 | return var->format; | |
674 | } | |
675 | ||
676 | int | |
677 | varobj_get_num_children (struct varobj *var) | |
678 | { | |
679 | if (var->num_children == -1) | |
680 | var->num_children = number_of_children (var); | |
681 | ||
682 | return var->num_children; | |
683 | } | |
684 | ||
685 | /* Creates a list of the immediate children of a variable object; | |
686 | the return code is the number of such children or -1 on error */ | |
687 | ||
688 | int | |
689 | varobj_list_children (struct varobj *var, struct varobj ***childlist) | |
690 | { | |
691 | struct varobj *child; | |
692 | char *name; | |
693 | int i; | |
694 | ||
695 | /* sanity check: have we been passed a pointer? */ | |
696 | if (childlist == NULL) | |
697 | return -1; | |
698 | ||
699 | *childlist = NULL; | |
700 | ||
701 | if (var->num_children == -1) | |
702 | var->num_children = number_of_children (var); | |
703 | ||
704 | /* List of children */ | |
705 | *childlist = xmalloc ((var->num_children + 1) * sizeof (struct varobj *)); | |
706 | ||
707 | for (i = 0; i < var->num_children; i++) | |
708 | { | |
709 | /* Mark as the end in case we bail out */ | |
710 | *((*childlist) + i) = NULL; | |
711 | ||
712 | /* check if child exists, if not create */ | |
713 | name = name_of_child (var, i); | |
714 | child = child_exists (var, name); | |
715 | if (child == NULL) | |
716 | child = create_child (var, i, name); | |
717 | ||
718 | *((*childlist) + i) = child; | |
719 | } | |
720 | ||
721 | /* End of list is marked by a NULL pointer */ | |
722 | *((*childlist) + i) = NULL; | |
723 | ||
724 | return var->num_children; | |
725 | } | |
726 | ||
727 | /* Obtain the type of an object Variable as a string similar to the one gdb | |
728 | prints on the console */ | |
729 | ||
730 | char * | |
731 | varobj_get_type (struct varobj *var) | |
732 | { | |
30b28db1 | 733 | struct value *val; |
8b93c638 JM |
734 | struct cleanup *old_chain; |
735 | struct ui_file *stb; | |
736 | char *thetype; | |
737 | long length; | |
738 | ||
739 | /* For the "fake" variables, do not return a type. (It's type is | |
740 | NULL, too.) */ | |
741 | if (CPLUS_FAKE_CHILD (var)) | |
742 | return NULL; | |
743 | ||
744 | stb = mem_fileopen (); | |
745 | old_chain = make_cleanup_ui_file_delete (stb); | |
746 | ||
30b28db1 | 747 | /* To print the type, we simply create a zero ``struct value *'' and |
8b93c638 JM |
748 | cast it to our type. We then typeprint this variable. */ |
749 | val = value_zero (var->type, not_lval); | |
df407dfe | 750 | type_print (value_type (val), "", stb, -1); |
8b93c638 JM |
751 | |
752 | thetype = ui_file_xstrdup (stb, &length); | |
753 | do_cleanups (old_chain); | |
754 | return thetype; | |
755 | } | |
756 | ||
757 | enum varobj_languages | |
758 | varobj_get_language (struct varobj *var) | |
759 | { | |
760 | return variable_language (var); | |
761 | } | |
762 | ||
763 | int | |
764 | varobj_get_attributes (struct varobj *var) | |
765 | { | |
766 | int attributes = 0; | |
767 | ||
768 | if (variable_editable (var)) | |
769 | /* FIXME: define masks for attributes */ | |
770 | attributes |= 0x00000001; /* Editable */ | |
771 | ||
772 | return attributes; | |
773 | } | |
774 | ||
775 | char * | |
776 | varobj_get_value (struct varobj *var) | |
777 | { | |
778 | return my_value_of_variable (var); | |
779 | } | |
780 | ||
781 | /* Set the value of an object variable (if it is editable) to the | |
782 | value of the given expression */ | |
783 | /* Note: Invokes functions that can call error() */ | |
784 | ||
785 | int | |
786 | varobj_set_value (struct varobj *var, char *expression) | |
787 | { | |
30b28db1 | 788 | struct value *val; |
8b93c638 | 789 | int offset = 0; |
a6c442d8 | 790 | int error = 0; |
8b93c638 JM |
791 | |
792 | /* The argument "expression" contains the variable's new value. | |
793 | We need to first construct a legal expression for this -- ugh! */ | |
794 | /* Does this cover all the bases? */ | |
795 | struct expression *exp; | |
30b28db1 | 796 | struct value *value; |
8b93c638 JM |
797 | int saved_input_radix = input_radix; |
798 | ||
575bbeb6 | 799 | if (var->value != NULL && variable_editable (var) && !var->error) |
8b93c638 JM |
800 | { |
801 | char *s = expression; | |
802 | int i; | |
8b93c638 JM |
803 | |
804 | input_radix = 10; /* ALWAYS reset to decimal temporarily */ | |
586e589c FN |
805 | if (!gdb_parse_exp_1 (&s, 0, 0, &exp)) |
806 | /* We cannot proceed without a well-formed expression. */ | |
807 | return 0; | |
8b93c638 JM |
808 | if (!gdb_evaluate_expression (exp, &value)) |
809 | { | |
810 | /* We cannot proceed without a valid expression. */ | |
8038e1e2 | 811 | xfree (exp); |
8b93c638 JM |
812 | return 0; |
813 | } | |
814 | ||
fb9b6b35 JJ |
815 | if (!my_value_equal (var->value, value, &error)) |
816 | var->updated = 1; | |
575bbeb6 | 817 | if (!gdb_value_assign (var->value, value, &val)) |
8a1a0112 | 818 | return 0; |
8b93c638 JM |
819 | value_free (var->value); |
820 | release_value (val); | |
821 | var->value = val; | |
822 | input_radix = saved_input_radix; | |
823 | return 1; | |
824 | } | |
825 | ||
826 | return 0; | |
827 | } | |
828 | ||
829 | /* Returns a malloc'ed list with all root variable objects */ | |
830 | int | |
831 | varobj_list (struct varobj ***varlist) | |
832 | { | |
833 | struct varobj **cv; | |
834 | struct varobj_root *croot; | |
835 | int mycount = rootcount; | |
836 | ||
837 | /* Alloc (rootcount + 1) entries for the result */ | |
838 | *varlist = xmalloc ((rootcount + 1) * sizeof (struct varobj *)); | |
839 | ||
840 | cv = *varlist; | |
841 | croot = rootlist; | |
842 | while ((croot != NULL) && (mycount > 0)) | |
843 | { | |
844 | *cv = croot->rootvar; | |
845 | mycount--; | |
846 | cv++; | |
847 | croot = croot->next; | |
848 | } | |
849 | /* Mark the end of the list */ | |
850 | *cv = NULL; | |
851 | ||
852 | if (mycount || (croot != NULL)) | |
72330bd6 AC |
853 | warning |
854 | ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)", | |
855 | rootcount, mycount); | |
8b93c638 JM |
856 | |
857 | return rootcount; | |
858 | } | |
859 | ||
860 | /* Update the values for a variable and its children. This is a | |
861 | two-pronged attack. First, re-parse the value for the root's | |
862 | expression to see if it's changed. Then go all the way | |
863 | through its children, reconstructing them and noting if they've | |
864 | changed. | |
73a93a32 JI |
865 | Return value: |
866 | -1 if there was an error updating the varobj | |
867 | -2 if the type changed | |
868 | Otherwise it is the number of children + parent changed | |
8b93c638 | 869 | |
705da579 KS |
870 | Only root variables can be updated... |
871 | ||
872 | NOTE: This function may delete the caller's varobj. If it | |
873 | returns -2, then it has done this and VARP will be modified | |
874 | to point to the new varobj. */ | |
8b93c638 JM |
875 | |
876 | int | |
705da579 | 877 | varobj_update (struct varobj **varp, struct varobj ***changelist) |
8b93c638 JM |
878 | { |
879 | int changed = 0; | |
a6c442d8 | 880 | int error = 0; |
73a93a32 | 881 | int type_changed; |
8b93c638 JM |
882 | int i; |
883 | int vleft; | |
8b93c638 JM |
884 | struct varobj *v; |
885 | struct varobj **cv; | |
2c67cb8b | 886 | struct varobj **templist = NULL; |
30b28db1 | 887 | struct value *new; |
8b93c638 JM |
888 | struct vstack *stack = NULL; |
889 | struct vstack *result = NULL; | |
e64d9b3d MH |
890 | struct frame_id old_fid; |
891 | struct frame_info *fi; | |
8b93c638 JM |
892 | |
893 | /* sanity check: have we been passed a pointer? */ | |
894 | if (changelist == NULL) | |
895 | return -1; | |
896 | ||
897 | /* Only root variables can be updated... */ | |
705da579 | 898 | if ((*varp)->root->rootvar != *varp) |
8b93c638 JM |
899 | /* Not a root var */ |
900 | return -1; | |
901 | ||
902 | /* Save the selected stack frame, since we will need to change it | |
903 | in order to evaluate expressions. */ | |
7a424e99 | 904 | old_fid = get_frame_id (deprecated_selected_frame); |
8b93c638 JM |
905 | |
906 | /* Update the root variable. value_of_root can return NULL | |
907 | if the variable is no longer around, i.e. we stepped out of | |
73a93a32 JI |
908 | the frame in which a local existed. We are letting the |
909 | value_of_root variable dispose of the varobj if the type | |
910 | has changed. */ | |
911 | type_changed = 1; | |
705da579 | 912 | new = value_of_root (varp, &type_changed); |
8b93c638 | 913 | if (new == NULL) |
73a93a32 | 914 | { |
705da579 | 915 | (*varp)->error = 1; |
73a93a32 JI |
916 | return -1; |
917 | } | |
8b93c638 JM |
918 | |
919 | /* Initialize a stack for temporary results */ | |
920 | vpush (&result, NULL); | |
921 | ||
ae093f96 FN |
922 | /* If this is a "use_selected_frame" varobj, and its type has changed, |
923 | them note that it's changed. */ | |
924 | if (type_changed) | |
8b93c638 | 925 | { |
705da579 | 926 | vpush (&result, *varp); |
ae093f96 FN |
927 | changed++; |
928 | } | |
929 | /* If values are not equal, note that it's changed. | |
930 | There a couple of exceptions here, though. | |
931 | We don't want some types to be reported as "changed". */ | |
fb9b6b35 | 932 | else if (type_changeable (*varp) && |
a6c442d8 | 933 | ((*varp)->updated || !my_value_equal ((*varp)->value, new, &error))) |
ae093f96 | 934 | { |
705da579 | 935 | vpush (&result, *varp); |
fb9b6b35 | 936 | (*varp)->updated = 0; |
ae093f96 | 937 | changed++; |
a6c442d8 MK |
938 | /* Its value is going to be updated to NEW. */ |
939 | (*varp)->error = error; | |
8b93c638 | 940 | } |
8b93c638 JM |
941 | |
942 | /* We must always keep around the new value for this root | |
943 | variable expression, or we lose the updated children! */ | |
705da579 KS |
944 | value_free ((*varp)->value); |
945 | (*varp)->value = new; | |
8b93c638 JM |
946 | |
947 | /* Initialize a stack */ | |
948 | vpush (&stack, NULL); | |
949 | ||
950 | /* Push the root's children */ | |
705da579 | 951 | if ((*varp)->children != NULL) |
8b93c638 JM |
952 | { |
953 | struct varobj_child *c; | |
705da579 | 954 | for (c = (*varp)->children; c != NULL; c = c->next) |
8b93c638 JM |
955 | vpush (&stack, c->child); |
956 | } | |
957 | ||
958 | /* Walk through the children, reconstructing them all. */ | |
959 | v = vpop (&stack); | |
960 | while (v != NULL) | |
961 | { | |
962 | /* Push any children */ | |
963 | if (v->children != NULL) | |
964 | { | |
965 | struct varobj_child *c; | |
966 | for (c = v->children; c != NULL; c = c->next) | |
967 | vpush (&stack, c->child); | |
968 | } | |
969 | ||
970 | /* Update this variable */ | |
971 | new = value_of_child (v->parent, v->index); | |
fb9b6b35 | 972 | if (type_changeable (v) && |
a6c442d8 | 973 | (v->updated || !my_value_equal (v->value, new, &error))) |
8b93c638 JM |
974 | { |
975 | /* Note that it's changed */ | |
976 | vpush (&result, v); | |
fb9b6b35 | 977 | v->updated = 0; |
8b93c638 JM |
978 | changed++; |
979 | } | |
a6c442d8 MK |
980 | /* Its value is going to be updated to NEW. */ |
981 | v->error = error; | |
8b93c638 JM |
982 | |
983 | /* We must always keep new values, since children depend on it. */ | |
984 | if (v->value != NULL) | |
985 | value_free (v->value); | |
986 | v->value = new; | |
987 | ||
988 | /* Get next child */ | |
989 | v = vpop (&stack); | |
990 | } | |
991 | ||
992 | /* Alloc (changed + 1) list entries */ | |
993 | /* FIXME: add a cleanup for the allocated list(s) | |
994 | because one day the select_frame called below can longjump */ | |
995 | *changelist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
996 | if (changed > 1) | |
997 | { | |
998 | templist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
999 | cv = templist; | |
1000 | } | |
1001 | else | |
1002 | cv = *changelist; | |
1003 | ||
1004 | /* Copy from result stack to list */ | |
1005 | vleft = changed; | |
1006 | *cv = vpop (&result); | |
1007 | while ((*cv != NULL) && (vleft > 0)) | |
1008 | { | |
1009 | vleft--; | |
1010 | cv++; | |
1011 | *cv = vpop (&result); | |
1012 | } | |
1013 | if (vleft) | |
8a3fe4f8 | 1014 | warning (_("varobj_update: assertion failed - vleft <> 0")); |
8b93c638 JM |
1015 | |
1016 | if (changed > 1) | |
1017 | { | |
1018 | /* Now we revert the order. */ | |
72330bd6 AC |
1019 | for (i = 0; i < changed; i++) |
1020 | *(*changelist + i) = *(templist + changed - 1 - i); | |
8b93c638 JM |
1021 | *(*changelist + changed) = NULL; |
1022 | } | |
1023 | ||
1024 | /* Restore selected frame */ | |
e64d9b3d MH |
1025 | fi = frame_find_by_id (old_fid); |
1026 | if (fi) | |
1027 | select_frame (fi); | |
8b93c638 | 1028 | |
73a93a32 JI |
1029 | if (type_changed) |
1030 | return -2; | |
1031 | else | |
1032 | return changed; | |
8b93c638 JM |
1033 | } |
1034 | \f | |
1035 | ||
1036 | /* Helper functions */ | |
1037 | ||
1038 | /* | |
1039 | * Variable object construction/destruction | |
1040 | */ | |
1041 | ||
1042 | static int | |
fba45db2 KB |
1043 | delete_variable (struct cpstack **resultp, struct varobj *var, |
1044 | int only_children_p) | |
8b93c638 JM |
1045 | { |
1046 | int delcount = 0; | |
1047 | ||
1048 | delete_variable_1 (resultp, &delcount, var, | |
1049 | only_children_p, 1 /* remove_from_parent_p */ ); | |
1050 | ||
1051 | return delcount; | |
1052 | } | |
1053 | ||
1054 | /* Delete the variable object VAR and its children */ | |
1055 | /* IMPORTANT NOTE: If we delete a variable which is a child | |
1056 | and the parent is not removed we dump core. It must be always | |
1057 | initially called with remove_from_parent_p set */ | |
1058 | static void | |
72330bd6 AC |
1059 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
1060 | struct varobj *var, int only_children_p, | |
1061 | int remove_from_parent_p) | |
8b93c638 JM |
1062 | { |
1063 | struct varobj_child *vc; | |
1064 | struct varobj_child *next; | |
1065 | ||
1066 | /* Delete any children of this variable, too. */ | |
1067 | for (vc = var->children; vc != NULL; vc = next) | |
1068 | { | |
1069 | if (!remove_from_parent_p) | |
1070 | vc->child->parent = NULL; | |
1071 | delete_variable_1 (resultp, delcountp, vc->child, 0, only_children_p); | |
1072 | next = vc->next; | |
b8c9b27d | 1073 | xfree (vc); |
8b93c638 JM |
1074 | } |
1075 | ||
1076 | /* if we were called to delete only the children we are done here */ | |
1077 | if (only_children_p) | |
1078 | return; | |
1079 | ||
1080 | /* Otherwise, add it to the list of deleted ones and proceed to do so */ | |
73a93a32 JI |
1081 | /* If the name is null, this is a temporary variable, that has not |
1082 | yet been installed, don't report it, it belongs to the caller... */ | |
1083 | if (var->obj_name != NULL) | |
8b93c638 | 1084 | { |
5b616ba1 | 1085 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
1086 | *delcountp = *delcountp + 1; |
1087 | } | |
1088 | ||
1089 | /* If this variable has a parent, remove it from its parent's list */ | |
1090 | /* OPTIMIZATION: if the parent of this variable is also being deleted, | |
1091 | (as indicated by remove_from_parent_p) we don't bother doing an | |
1092 | expensive list search to find the element to remove when we are | |
1093 | discarding the list afterwards */ | |
72330bd6 | 1094 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 JM |
1095 | { |
1096 | remove_child_from_parent (var->parent, var); | |
1097 | } | |
72330bd6 | 1098 | |
73a93a32 JI |
1099 | if (var->obj_name != NULL) |
1100 | uninstall_variable (var); | |
8b93c638 JM |
1101 | |
1102 | /* Free memory associated with this variable */ | |
1103 | free_variable (var); | |
1104 | } | |
1105 | ||
1106 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ | |
1107 | static int | |
fba45db2 | 1108 | install_variable (struct varobj *var) |
8b93c638 JM |
1109 | { |
1110 | struct vlist *cv; | |
1111 | struct vlist *newvl; | |
1112 | const char *chp; | |
1113 | unsigned int index = 0; | |
1114 | unsigned int i = 1; | |
1115 | ||
1116 | for (chp = var->obj_name; *chp; chp++) | |
1117 | { | |
1118 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1119 | } | |
1120 | ||
1121 | cv = *(varobj_table + index); | |
1122 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1123 | cv = cv->next; | |
1124 | ||
1125 | if (cv != NULL) | |
8a3fe4f8 | 1126 | error (_("Duplicate variable object name")); |
8b93c638 JM |
1127 | |
1128 | /* Add varobj to hash table */ | |
1129 | newvl = xmalloc (sizeof (struct vlist)); | |
1130 | newvl->next = *(varobj_table + index); | |
1131 | newvl->var = var; | |
1132 | *(varobj_table + index) = newvl; | |
1133 | ||
1134 | /* If root, add varobj to root list */ | |
1135 | if (var->root->rootvar == var) | |
1136 | { | |
1137 | /* Add to list of root variables */ | |
1138 | if (rootlist == NULL) | |
1139 | var->root->next = NULL; | |
1140 | else | |
1141 | var->root->next = rootlist; | |
1142 | rootlist = var->root; | |
1143 | rootcount++; | |
1144 | } | |
1145 | ||
1146 | return 1; /* OK */ | |
1147 | } | |
1148 | ||
1149 | /* Unistall the object VAR. */ | |
1150 | static void | |
fba45db2 | 1151 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
1152 | { |
1153 | struct vlist *cv; | |
1154 | struct vlist *prev; | |
1155 | struct varobj_root *cr; | |
1156 | struct varobj_root *prer; | |
1157 | const char *chp; | |
1158 | unsigned int index = 0; | |
1159 | unsigned int i = 1; | |
1160 | ||
1161 | /* Remove varobj from hash table */ | |
1162 | for (chp = var->obj_name; *chp; chp++) | |
1163 | { | |
1164 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1165 | } | |
1166 | ||
1167 | cv = *(varobj_table + index); | |
1168 | prev = NULL; | |
1169 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1170 | { | |
1171 | prev = cv; | |
1172 | cv = cv->next; | |
1173 | } | |
1174 | ||
1175 | if (varobjdebug) | |
1176 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
1177 | ||
1178 | if (cv == NULL) | |
1179 | { | |
72330bd6 AC |
1180 | warning |
1181 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
1182 | var->obj_name); | |
8b93c638 JM |
1183 | return; |
1184 | } | |
1185 | ||
1186 | if (prev == NULL) | |
1187 | *(varobj_table + index) = cv->next; | |
1188 | else | |
1189 | prev->next = cv->next; | |
1190 | ||
b8c9b27d | 1191 | xfree (cv); |
8b93c638 JM |
1192 | |
1193 | /* If root, remove varobj from root list */ | |
1194 | if (var->root->rootvar == var) | |
1195 | { | |
1196 | /* Remove from list of root variables */ | |
1197 | if (rootlist == var->root) | |
1198 | rootlist = var->root->next; | |
1199 | else | |
1200 | { | |
1201 | prer = NULL; | |
1202 | cr = rootlist; | |
1203 | while ((cr != NULL) && (cr->rootvar != var)) | |
1204 | { | |
1205 | prer = cr; | |
1206 | cr = cr->next; | |
1207 | } | |
1208 | if (cr == NULL) | |
1209 | { | |
72330bd6 AC |
1210 | warning |
1211 | ("Assertion failed: Could not find varobj \"%s\" in root list", | |
1212 | var->obj_name); | |
8b93c638 JM |
1213 | return; |
1214 | } | |
1215 | if (prer == NULL) | |
1216 | rootlist = NULL; | |
1217 | else | |
1218 | prer->next = cr->next; | |
1219 | } | |
1220 | rootcount--; | |
1221 | } | |
1222 | ||
1223 | } | |
1224 | ||
1225 | /* Does a child with the name NAME exist in VAR? If so, return its data. | |
1226 | If not, return NULL. */ | |
1227 | static struct varobj * | |
1669605f | 1228 | child_exists (struct varobj *var, char *name) |
8b93c638 JM |
1229 | { |
1230 | struct varobj_child *vc; | |
1231 | ||
1232 | for (vc = var->children; vc != NULL; vc = vc->next) | |
1233 | { | |
6e382aa3 | 1234 | if (strcmp (vc->child->name, name) == 0) |
8b93c638 JM |
1235 | return vc->child; |
1236 | } | |
1237 | ||
1238 | return NULL; | |
1239 | } | |
1240 | ||
1241 | /* Create and install a child of the parent of the given name */ | |
1242 | static struct varobj * | |
fba45db2 | 1243 | create_child (struct varobj *parent, int index, char *name) |
8b93c638 JM |
1244 | { |
1245 | struct varobj *child; | |
1246 | char *childs_name; | |
1247 | ||
1248 | child = new_variable (); | |
1249 | ||
1250 | /* name is allocated by name_of_child */ | |
1251 | child->name = name; | |
1252 | child->index = index; | |
1253 | child->value = value_of_child (parent, index); | |
7f19b9a2 | 1254 | if ((!CPLUS_FAKE_CHILD (child) && child->value == NULL) || parent->error) |
8b93c638 JM |
1255 | child->error = 1; |
1256 | child->parent = parent; | |
1257 | child->root = parent->root; | |
b435e160 | 1258 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); |
8b93c638 JM |
1259 | child->obj_name = childs_name; |
1260 | install_variable (child); | |
1261 | ||
1262 | /* Save a pointer to this child in the parent */ | |
1263 | save_child_in_parent (parent, child); | |
1264 | ||
1265 | /* Note the type of this child */ | |
1266 | child->type = type_of_child (child); | |
1267 | ||
1268 | return child; | |
1269 | } | |
1270 | ||
1271 | /* FIXME: This should be a generic add to list */ | |
1272 | /* Save CHILD in the PARENT's data. */ | |
1273 | static void | |
fba45db2 | 1274 | save_child_in_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1275 | { |
1276 | struct varobj_child *vc; | |
1277 | ||
1278 | /* Insert the child at the top */ | |
1279 | vc = parent->children; | |
1280 | parent->children = | |
1281 | (struct varobj_child *) xmalloc (sizeof (struct varobj_child)); | |
1282 | ||
1283 | parent->children->next = vc; | |
1284 | parent->children->child = child; | |
1285 | } | |
1286 | ||
1287 | /* FIXME: This should be a generic remove from list */ | |
1288 | /* Remove the CHILD from the PARENT's list of children. */ | |
1289 | static void | |
fba45db2 | 1290 | remove_child_from_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1291 | { |
1292 | struct varobj_child *vc, *prev; | |
1293 | ||
1294 | /* Find the child in the parent's list */ | |
1295 | prev = NULL; | |
1296 | for (vc = parent->children; vc != NULL;) | |
1297 | { | |
1298 | if (vc->child == child) | |
1299 | break; | |
1300 | prev = vc; | |
1301 | vc = vc->next; | |
1302 | } | |
1303 | ||
1304 | if (prev == NULL) | |
1305 | parent->children = vc->next; | |
1306 | else | |
1307 | prev->next = vc->next; | |
1308 | ||
1309 | } | |
1310 | \f | |
1311 | ||
1312 | /* | |
1313 | * Miscellaneous utility functions. | |
1314 | */ | |
1315 | ||
1316 | /* Allocate memory and initialize a new variable */ | |
1317 | static struct varobj * | |
1318 | new_variable (void) | |
1319 | { | |
1320 | struct varobj *var; | |
1321 | ||
1322 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
1323 | var->name = NULL; | |
1324 | var->obj_name = NULL; | |
1325 | var->index = -1; | |
1326 | var->type = NULL; | |
1327 | var->value = NULL; | |
1328 | var->error = 0; | |
1329 | var->num_children = -1; | |
1330 | var->parent = NULL; | |
1331 | var->children = NULL; | |
1332 | var->format = 0; | |
1333 | var->root = NULL; | |
fb9b6b35 | 1334 | var->updated = 0; |
8b93c638 JM |
1335 | |
1336 | return var; | |
1337 | } | |
1338 | ||
1339 | /* Allocate memory and initialize a new root variable */ | |
1340 | static struct varobj * | |
1341 | new_root_variable (void) | |
1342 | { | |
1343 | struct varobj *var = new_variable (); | |
1344 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));; | |
1345 | var->root->lang = NULL; | |
1346 | var->root->exp = NULL; | |
1347 | var->root->valid_block = NULL; | |
7a424e99 | 1348 | var->root->frame = null_frame_id; |
73a93a32 | 1349 | var->root->use_selected_frame = 0; |
8b93c638 JM |
1350 | var->root->rootvar = NULL; |
1351 | ||
1352 | return var; | |
1353 | } | |
1354 | ||
1355 | /* Free any allocated memory associated with VAR. */ | |
1356 | static void | |
fba45db2 | 1357 | free_variable (struct varobj *var) |
8b93c638 JM |
1358 | { |
1359 | /* Free the expression if this is a root variable. */ | |
1360 | if (var->root->rootvar == var) | |
1361 | { | |
1362 | free_current_contents ((char **) &var->root->exp); | |
8038e1e2 | 1363 | xfree (var->root); |
8b93c638 JM |
1364 | } |
1365 | ||
8038e1e2 AC |
1366 | xfree (var->name); |
1367 | xfree (var->obj_name); | |
1368 | xfree (var); | |
8b93c638 JM |
1369 | } |
1370 | ||
74b7792f AC |
1371 | static void |
1372 | do_free_variable_cleanup (void *var) | |
1373 | { | |
1374 | free_variable (var); | |
1375 | } | |
1376 | ||
1377 | static struct cleanup * | |
1378 | make_cleanup_free_variable (struct varobj *var) | |
1379 | { | |
1380 | return make_cleanup (do_free_variable_cleanup, var); | |
1381 | } | |
1382 | ||
6766a268 DJ |
1383 | /* This returns the type of the variable. It also skips past typedefs |
1384 | to return the real type of the variable. | |
94b66fa7 KS |
1385 | |
1386 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1387 | except within get_target_type and get_type. */ | |
8b93c638 | 1388 | static struct type * |
fba45db2 | 1389 | get_type (struct varobj *var) |
8b93c638 JM |
1390 | { |
1391 | struct type *type; | |
1392 | type = var->type; | |
1393 | ||
6766a268 DJ |
1394 | if (type != NULL) |
1395 | type = check_typedef (type); | |
8b93c638 JM |
1396 | |
1397 | return type; | |
1398 | } | |
1399 | ||
1400 | /* This returns the type of the variable, dereferencing pointers, too. */ | |
1401 | static struct type * | |
fba45db2 | 1402 | get_type_deref (struct varobj *var) |
8b93c638 JM |
1403 | { |
1404 | struct type *type; | |
1405 | ||
1406 | type = get_type (var); | |
1407 | ||
1408 | if (type != NULL && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1409 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1410 | type = get_target_type (type); | |
1411 | ||
1412 | return type; | |
1413 | } | |
1414 | ||
1415 | /* This returns the target type (or NULL) of TYPE, also skipping | |
94b66fa7 KS |
1416 | past typedefs, just like get_type (). |
1417 | ||
1418 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1419 | except within get_target_type and get_type. */ | |
8b93c638 | 1420 | static struct type * |
fba45db2 | 1421 | get_target_type (struct type *type) |
8b93c638 JM |
1422 | { |
1423 | if (type != NULL) | |
1424 | { | |
1425 | type = TYPE_TARGET_TYPE (type); | |
6766a268 DJ |
1426 | if (type != NULL) |
1427 | type = check_typedef (type); | |
8b93c638 JM |
1428 | } |
1429 | ||
1430 | return type; | |
1431 | } | |
1432 | ||
1433 | /* What is the default display for this variable? We assume that | |
1434 | everything is "natural". Any exceptions? */ | |
1435 | static enum varobj_display_formats | |
fba45db2 | 1436 | variable_default_display (struct varobj *var) |
8b93c638 JM |
1437 | { |
1438 | return FORMAT_NATURAL; | |
1439 | } | |
1440 | ||
a6c442d8 MK |
1441 | /* This function is similar to GDB's value_contents_equal, except that |
1442 | this one is "safe"; it never longjmps. It determines if the VAL1's | |
1443 | value is the same as VAL2. If for some reason the value of VAR2 | |
1444 | can't be established, *ERROR2 is set to non-zero. */ | |
1445 | ||
8b93c638 | 1446 | static int |
30b28db1 | 1447 | my_value_equal (struct value *val1, struct value *val2, int *error2) |
8b93c638 | 1448 | { |
a6c442d8 | 1449 | volatile struct exception except; |
8b93c638 | 1450 | |
a6c442d8 | 1451 | /* As a special case, if both are null, we say they're equal. */ |
8b93c638 JM |
1452 | if (val1 == NULL && val2 == NULL) |
1453 | return 1; | |
1454 | else if (val1 == NULL || val2 == NULL) | |
1455 | return 0; | |
1456 | ||
a6c442d8 MK |
1457 | /* The contents of VAL1 are supposed to be known. */ |
1458 | gdb_assert (!value_lazy (val1)); | |
8b93c638 | 1459 | |
a6c442d8 MK |
1460 | /* Make sure we also know the contents of VAL2. */ |
1461 | val2 = coerce_array (val2); | |
1462 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
8b93c638 | 1463 | { |
a6c442d8 MK |
1464 | if (value_lazy (val2)) |
1465 | value_fetch_lazy (val2); | |
1466 | } | |
1467 | if (except.reason < 0) | |
1468 | { | |
1469 | *error2 = 1; | |
1470 | return 0; | |
8b93c638 | 1471 | } |
a6c442d8 | 1472 | gdb_assert (!value_lazy (val2)); |
8b93c638 | 1473 | |
a6c442d8 | 1474 | return value_contents_equal (val1, val2); |
8b93c638 JM |
1475 | } |
1476 | ||
1477 | /* FIXME: The following should be generic for any pointer */ | |
1478 | static void | |
fba45db2 | 1479 | vpush (struct vstack **pstack, struct varobj *var) |
8b93c638 JM |
1480 | { |
1481 | struct vstack *s; | |
1482 | ||
1483 | s = (struct vstack *) xmalloc (sizeof (struct vstack)); | |
1484 | s->var = var; | |
1485 | s->next = *pstack; | |
1486 | *pstack = s; | |
1487 | } | |
1488 | ||
1489 | /* FIXME: The following should be generic for any pointer */ | |
1490 | static struct varobj * | |
fba45db2 | 1491 | vpop (struct vstack **pstack) |
8b93c638 JM |
1492 | { |
1493 | struct vstack *s; | |
1494 | struct varobj *v; | |
1495 | ||
1496 | if ((*pstack)->var == NULL && (*pstack)->next == NULL) | |
1497 | return NULL; | |
1498 | ||
1499 | s = *pstack; | |
1500 | v = s->var; | |
1501 | *pstack = (*pstack)->next; | |
b8c9b27d | 1502 | xfree (s); |
8b93c638 JM |
1503 | |
1504 | return v; | |
1505 | } | |
1506 | ||
1507 | /* FIXME: The following should be generic for any pointer */ | |
1508 | static void | |
fba45db2 | 1509 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
1510 | { |
1511 | struct cpstack *s; | |
1512 | ||
1513 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
1514 | s->name = name; | |
1515 | s->next = *pstack; | |
1516 | *pstack = s; | |
1517 | } | |
1518 | ||
1519 | /* FIXME: The following should be generic for any pointer */ | |
1520 | static char * | |
fba45db2 | 1521 | cppop (struct cpstack **pstack) |
8b93c638 JM |
1522 | { |
1523 | struct cpstack *s; | |
1524 | char *v; | |
1525 | ||
1526 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
1527 | return NULL; | |
1528 | ||
1529 | s = *pstack; | |
1530 | v = s->name; | |
1531 | *pstack = (*pstack)->next; | |
b8c9b27d | 1532 | xfree (s); |
8b93c638 JM |
1533 | |
1534 | return v; | |
1535 | } | |
1536 | \f | |
1537 | /* | |
1538 | * Language-dependencies | |
1539 | */ | |
1540 | ||
1541 | /* Common entry points */ | |
1542 | ||
1543 | /* Get the language of variable VAR. */ | |
1544 | static enum varobj_languages | |
fba45db2 | 1545 | variable_language (struct varobj *var) |
8b93c638 JM |
1546 | { |
1547 | enum varobj_languages lang; | |
1548 | ||
1549 | switch (var->root->exp->language_defn->la_language) | |
1550 | { | |
1551 | default: | |
1552 | case language_c: | |
1553 | lang = vlang_c; | |
1554 | break; | |
1555 | case language_cplus: | |
1556 | lang = vlang_cplus; | |
1557 | break; | |
1558 | case language_java: | |
1559 | lang = vlang_java; | |
1560 | break; | |
1561 | } | |
1562 | ||
1563 | return lang; | |
1564 | } | |
1565 | ||
1566 | /* Return the number of children for a given variable. | |
1567 | The result of this function is defined by the language | |
1568 | implementation. The number of children returned by this function | |
1569 | is the number of children that the user will see in the variable | |
1570 | display. */ | |
1571 | static int | |
fba45db2 | 1572 | number_of_children (struct varobj *var) |
8b93c638 JM |
1573 | { |
1574 | return (*var->root->lang->number_of_children) (var);; | |
1575 | } | |
1576 | ||
1577 | /* What is the expression for the root varobj VAR? Returns a malloc'd string. */ | |
1578 | static char * | |
fba45db2 | 1579 | name_of_variable (struct varobj *var) |
8b93c638 JM |
1580 | { |
1581 | return (*var->root->lang->name_of_variable) (var); | |
1582 | } | |
1583 | ||
1584 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */ | |
1585 | static char * | |
fba45db2 | 1586 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
1587 | { |
1588 | return (*var->root->lang->name_of_child) (var, index); | |
1589 | } | |
1590 | ||
30b28db1 | 1591 | /* What is the ``struct value *'' of the root variable VAR? |
73a93a32 JI |
1592 | TYPE_CHANGED controls what to do if the type of a |
1593 | use_selected_frame = 1 variable changes. On input, | |
1594 | TYPE_CHANGED = 1 means discard the old varobj, and replace | |
1595 | it with this one. TYPE_CHANGED = 0 means leave it around. | |
1596 | NB: In both cases, var_handle will point to the new varobj, | |
1597 | so if you use TYPE_CHANGED = 0, you will have to stash the | |
1598 | old varobj pointer away somewhere before calling this. | |
1599 | On return, TYPE_CHANGED will be 1 if the type has changed, and | |
1600 | 0 otherwise. */ | |
30b28db1 | 1601 | static struct value * |
fba45db2 | 1602 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 1603 | { |
73a93a32 JI |
1604 | struct varobj *var; |
1605 | ||
1606 | if (var_handle == NULL) | |
1607 | return NULL; | |
1608 | ||
1609 | var = *var_handle; | |
1610 | ||
1611 | /* This should really be an exception, since this should | |
1612 | only get called with a root variable. */ | |
1613 | ||
1614 | if (var->root->rootvar != var) | |
1615 | return NULL; | |
1616 | ||
1617 | if (var->root->use_selected_frame) | |
1618 | { | |
1619 | struct varobj *tmp_var; | |
1620 | char *old_type, *new_type; | |
1621 | old_type = varobj_get_type (var); | |
1622 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
1623 | USE_SELECTED_FRAME); | |
1624 | if (tmp_var == NULL) | |
1625 | { | |
1626 | return NULL; | |
1627 | } | |
1628 | new_type = varobj_get_type (tmp_var); | |
72330bd6 | 1629 | if (strcmp (old_type, new_type) == 0) |
73a93a32 JI |
1630 | { |
1631 | varobj_delete (tmp_var, NULL, 0); | |
1632 | *type_changed = 0; | |
1633 | } | |
1634 | else | |
1635 | { | |
1636 | if (*type_changed) | |
1637 | { | |
72330bd6 | 1638 | tmp_var->obj_name = |
73a93a32 | 1639 | savestring (var->obj_name, strlen (var->obj_name)); |
f7635dd9 | 1640 | varobj_delete (var, NULL, 0); |
73a93a32 JI |
1641 | } |
1642 | else | |
1643 | { | |
72330bd6 | 1644 | tmp_var->obj_name = varobj_gen_name (); |
73a93a32 JI |
1645 | } |
1646 | install_variable (tmp_var); | |
1647 | *var_handle = tmp_var; | |
705da579 | 1648 | var = *var_handle; |
73a93a32 JI |
1649 | *type_changed = 1; |
1650 | } | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | *type_changed = 0; | |
1655 | } | |
1656 | ||
1657 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
1658 | } |
1659 | ||
30b28db1 AC |
1660 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
1661 | static struct value * | |
fba45db2 | 1662 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 1663 | { |
30b28db1 | 1664 | struct value *value; |
8b93c638 JM |
1665 | |
1666 | value = (*parent->root->lang->value_of_child) (parent, index); | |
1667 | ||
1668 | /* If we're being lazy, fetch the real value of the variable. */ | |
d69fe07e | 1669 | if (value != NULL && value_lazy (value)) |
575bbeb6 KS |
1670 | { |
1671 | /* If we fail to fetch the value of the child, return | |
7f19b9a2 AC |
1672 | NULL so that callers notice that we're leaving an |
1673 | error message. */ | |
575bbeb6 KS |
1674 | if (!gdb_value_fetch_lazy (value)) |
1675 | value = NULL; | |
1676 | } | |
8b93c638 JM |
1677 | |
1678 | return value; | |
1679 | } | |
1680 | ||
1681 | /* What is the type of VAR? */ | |
1682 | static struct type * | |
fba45db2 | 1683 | type_of_child (struct varobj *var) |
8b93c638 JM |
1684 | { |
1685 | ||
1686 | /* If the child had no evaluation errors, var->value | |
1687 | will be non-NULL and contain a valid type. */ | |
1688 | if (var->value != NULL) | |
df407dfe | 1689 | return value_type (var->value); |
8b93c638 JM |
1690 | |
1691 | /* Otherwise, we must compute the type. */ | |
1692 | return (*var->root->lang->type_of_child) (var->parent, var->index); | |
1693 | } | |
1694 | ||
1695 | /* Is this variable editable? Use the variable's type to make | |
1696 | this determination. */ | |
1697 | static int | |
fba45db2 | 1698 | variable_editable (struct varobj *var) |
8b93c638 JM |
1699 | { |
1700 | return (*var->root->lang->variable_editable) (var); | |
1701 | } | |
1702 | ||
1703 | /* GDB already has a command called "value_of_variable". Sigh. */ | |
1704 | static char * | |
fba45db2 | 1705 | my_value_of_variable (struct varobj *var) |
8b93c638 JM |
1706 | { |
1707 | return (*var->root->lang->value_of_variable) (var); | |
1708 | } | |
1709 | ||
1710 | /* Is VAR something that can change? Depending on language, | |
1711 | some variable's values never change. For example, | |
1712 | struct and unions never change values. */ | |
1713 | static int | |
fba45db2 | 1714 | type_changeable (struct varobj *var) |
8b93c638 JM |
1715 | { |
1716 | int r; | |
1717 | struct type *type; | |
1718 | ||
1719 | if (CPLUS_FAKE_CHILD (var)) | |
1720 | return 0; | |
1721 | ||
1722 | type = get_type (var); | |
1723 | ||
1724 | switch (TYPE_CODE (type)) | |
1725 | { | |
72330bd6 AC |
1726 | case TYPE_CODE_STRUCT: |
1727 | case TYPE_CODE_UNION: | |
1728 | case TYPE_CODE_ARRAY: | |
1729 | r = 0; | |
1730 | break; | |
8b93c638 | 1731 | |
72330bd6 AC |
1732 | default: |
1733 | r = 1; | |
8b93c638 JM |
1734 | } |
1735 | ||
1736 | return r; | |
1737 | } | |
1738 | ||
1739 | /* C */ | |
1740 | static int | |
fba45db2 | 1741 | c_number_of_children (struct varobj *var) |
8b93c638 JM |
1742 | { |
1743 | struct type *type; | |
1744 | struct type *target; | |
1745 | int children; | |
1746 | ||
1747 | type = get_type (var); | |
1748 | target = get_target_type (type); | |
1749 | children = 0; | |
1750 | ||
1751 | switch (TYPE_CODE (type)) | |
1752 | { | |
1753 | case TYPE_CODE_ARRAY: | |
1754 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
72330bd6 | 1755 | && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED) |
8b93c638 JM |
1756 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
1757 | else | |
1758 | children = -1; | |
1759 | break; | |
1760 | ||
1761 | case TYPE_CODE_STRUCT: | |
1762 | case TYPE_CODE_UNION: | |
1763 | children = TYPE_NFIELDS (type); | |
1764 | break; | |
1765 | ||
1766 | case TYPE_CODE_PTR: | |
1767 | /* This is where things get compilcated. All pointers have one child. | |
1768 | Except, of course, for struct and union ptr, which we automagically | |
0755e6c1 FN |
1769 | dereference for the user and function ptrs, which have no children. |
1770 | We also don't dereference void* as we don't know what to show. | |
1771 | We can show char* so we allow it to be dereferenced. If you decide | |
1772 | to test for it, please mind that a little magic is necessary to | |
1773 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
1774 | TYPE_NAME == "char" */ | |
1775 | ||
8b93c638 JM |
1776 | switch (TYPE_CODE (target)) |
1777 | { | |
1778 | case TYPE_CODE_STRUCT: | |
1779 | case TYPE_CODE_UNION: | |
1780 | children = TYPE_NFIELDS (target); | |
1781 | break; | |
1782 | ||
1783 | case TYPE_CODE_FUNC: | |
0755e6c1 | 1784 | case TYPE_CODE_VOID: |
8b93c638 JM |
1785 | children = 0; |
1786 | break; | |
1787 | ||
1788 | default: | |
0755e6c1 | 1789 | children = 1; |
8b93c638 JM |
1790 | } |
1791 | break; | |
1792 | ||
1793 | default: | |
1794 | /* Other types have no children */ | |
1795 | break; | |
1796 | } | |
1797 | ||
1798 | return children; | |
1799 | } | |
1800 | ||
1801 | static char * | |
fba45db2 | 1802 | c_name_of_variable (struct varobj *parent) |
8b93c638 JM |
1803 | { |
1804 | return savestring (parent->name, strlen (parent->name)); | |
1805 | } | |
1806 | ||
1807 | static char * | |
fba45db2 | 1808 | c_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1809 | { |
1810 | struct type *type; | |
1811 | struct type *target; | |
1812 | char *name; | |
1813 | char *string; | |
1814 | ||
1815 | type = get_type (parent); | |
1816 | target = get_target_type (type); | |
1817 | ||
1818 | switch (TYPE_CODE (type)) | |
1819 | { | |
1820 | case TYPE_CODE_ARRAY: | |
b435e160 | 1821 | name = xstrprintf ("%d", index); |
8b93c638 JM |
1822 | break; |
1823 | ||
1824 | case TYPE_CODE_STRUCT: | |
1825 | case TYPE_CODE_UNION: | |
1826 | string = TYPE_FIELD_NAME (type, index); | |
1827 | name = savestring (string, strlen (string)); | |
1828 | break; | |
1829 | ||
1830 | case TYPE_CODE_PTR: | |
1831 | switch (TYPE_CODE (target)) | |
1832 | { | |
1833 | case TYPE_CODE_STRUCT: | |
1834 | case TYPE_CODE_UNION: | |
1835 | string = TYPE_FIELD_NAME (target, index); | |
1836 | name = savestring (string, strlen (string)); | |
1837 | break; | |
1838 | ||
1839 | default: | |
b435e160 | 1840 | name = xstrprintf ("*%s", parent->name); |
8b93c638 JM |
1841 | break; |
1842 | } | |
1843 | break; | |
1844 | ||
1845 | default: | |
1846 | /* This should not happen */ | |
1847 | name = xstrdup ("???"); | |
1848 | } | |
1849 | ||
1850 | return name; | |
1851 | } | |
1852 | ||
30b28db1 | 1853 | static struct value * |
fba45db2 | 1854 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 1855 | { |
30b28db1 | 1856 | struct value *new_val; |
73a93a32 | 1857 | struct varobj *var = *var_handle; |
8b93c638 JM |
1858 | struct frame_info *fi; |
1859 | int within_scope; | |
1860 | ||
73a93a32 JI |
1861 | /* Only root variables can be updated... */ |
1862 | if (var->root->rootvar != var) | |
1863 | /* Not a root var */ | |
1864 | return NULL; | |
1865 | ||
72330bd6 | 1866 | |
8b93c638 JM |
1867 | /* Determine whether the variable is still around. */ |
1868 | if (var->root->valid_block == NULL) | |
1869 | within_scope = 1; | |
1870 | else | |
1871 | { | |
1872 | reinit_frame_cache (); | |
e64d9b3d | 1873 | fi = frame_find_by_id (var->root->frame); |
8b93c638 JM |
1874 | within_scope = fi != NULL; |
1875 | /* FIXME: select_frame could fail */ | |
1876 | if (within_scope) | |
0f7d239c | 1877 | select_frame (fi); |
8b93c638 | 1878 | } |
72330bd6 | 1879 | |
8b93c638 JM |
1880 | if (within_scope) |
1881 | { | |
73a93a32 | 1882 | /* We need to catch errors here, because if evaluate |
72330bd6 AC |
1883 | expression fails we just want to make val->error = 1 and |
1884 | go on */ | |
8b93c638 JM |
1885 | if (gdb_evaluate_expression (var->root->exp, &new_val)) |
1886 | { | |
d69fe07e | 1887 | if (value_lazy (new_val)) |
8b93c638 | 1888 | { |
73a93a32 | 1889 | /* We need to catch errors because if |
72330bd6 AC |
1890 | value_fetch_lazy fails we still want to continue |
1891 | (after making val->error = 1) */ | |
0fd88904 AC |
1892 | /* FIXME: Shouldn't be using value_contents()? The |
1893 | comment on value_fetch_lazy() says it is only called | |
1894 | from the macro... */ | |
8b93c638 JM |
1895 | if (!gdb_value_fetch_lazy (new_val)) |
1896 | var->error = 1; | |
1897 | else | |
1898 | var->error = 0; | |
1899 | } | |
1900 | } | |
1901 | else | |
1902 | var->error = 1; | |
72330bd6 | 1903 | |
8b93c638 JM |
1904 | release_value (new_val); |
1905 | return new_val; | |
1906 | } | |
1907 | ||
1908 | return NULL; | |
1909 | } | |
1910 | ||
30b28db1 | 1911 | static struct value * |
fba45db2 | 1912 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 1913 | { |
30b28db1 AC |
1914 | struct value *value; |
1915 | struct value *temp; | |
1916 | struct value *indval; | |
8b93c638 JM |
1917 | struct type *type, *target; |
1918 | char *name; | |
1919 | ||
1920 | type = get_type (parent); | |
1921 | target = get_target_type (type); | |
1922 | name = name_of_child (parent, index); | |
1923 | temp = parent->value; | |
1924 | value = NULL; | |
1925 | ||
1926 | if (temp != NULL) | |
1927 | { | |
1928 | switch (TYPE_CODE (type)) | |
1929 | { | |
1930 | case TYPE_CODE_ARRAY: | |
8310b29b | 1931 | #if 0 |
72330bd6 | 1932 | /* This breaks if the array lives in a (vector) register. */ |
8b93c638 JM |
1933 | value = value_slice (temp, index, 1); |
1934 | temp = value_coerce_array (value); | |
1935 | gdb_value_ind (temp, &value); | |
8310b29b FN |
1936 | #else |
1937 | indval = value_from_longest (builtin_type_int, (LONGEST) index); | |
1938 | gdb_value_subscript (temp, indval, &value); | |
1939 | #endif | |
8b93c638 JM |
1940 | break; |
1941 | ||
1942 | case TYPE_CODE_STRUCT: | |
1943 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1944 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1945 | "vstructure"); | |
8b93c638 JM |
1946 | break; |
1947 | ||
1948 | case TYPE_CODE_PTR: | |
1949 | switch (TYPE_CODE (target)) | |
1950 | { | |
1951 | case TYPE_CODE_STRUCT: | |
1952 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1953 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1954 | "vstructure"); | |
8b93c638 JM |
1955 | break; |
1956 | ||
1957 | default: | |
1958 | gdb_value_ind (temp, &value); | |
1959 | break; | |
1960 | } | |
1961 | break; | |
1962 | ||
1963 | default: | |
1964 | break; | |
1965 | } | |
1966 | } | |
1967 | ||
1968 | if (value != NULL) | |
1969 | release_value (value); | |
1970 | ||
5bbc1a8e | 1971 | xfree (name); |
8b93c638 JM |
1972 | return value; |
1973 | } | |
1974 | ||
1975 | static struct type * | |
fba45db2 | 1976 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1977 | { |
1978 | struct type *type; | |
1979 | char *name = name_of_child (parent, index); | |
1980 | ||
1981 | switch (TYPE_CODE (parent->type)) | |
1982 | { | |
1983 | case TYPE_CODE_ARRAY: | |
94b66fa7 | 1984 | type = get_target_type (parent->type); |
8b93c638 JM |
1985 | break; |
1986 | ||
1987 | case TYPE_CODE_STRUCT: | |
1988 | case TYPE_CODE_UNION: | |
1989 | type = lookup_struct_elt_type (parent->type, name, 0); | |
1990 | break; | |
1991 | ||
1992 | case TYPE_CODE_PTR: | |
94b66fa7 | 1993 | switch (TYPE_CODE (get_target_type (parent->type))) |
8b93c638 JM |
1994 | { |
1995 | case TYPE_CODE_STRUCT: | |
1996 | case TYPE_CODE_UNION: | |
1997 | type = lookup_struct_elt_type (parent->type, name, 0); | |
1998 | break; | |
1999 | ||
2000 | default: | |
94b66fa7 | 2001 | type = get_target_type (parent->type); |
8b93c638 JM |
2002 | break; |
2003 | } | |
2004 | break; | |
2005 | ||
2006 | default: | |
2007 | /* This should not happen as only the above types have children */ | |
8a3fe4f8 | 2008 | warning (_("Child of parent whose type does not allow children")); |
8b93c638 JM |
2009 | /* FIXME: Can we still go on? */ |
2010 | type = NULL; | |
2011 | break; | |
2012 | } | |
2013 | ||
5bbc1a8e | 2014 | xfree (name); |
8b93c638 JM |
2015 | return type; |
2016 | } | |
2017 | ||
2018 | static int | |
fba45db2 | 2019 | c_variable_editable (struct varobj *var) |
8b93c638 JM |
2020 | { |
2021 | switch (TYPE_CODE (get_type (var))) | |
2022 | { | |
2023 | case TYPE_CODE_STRUCT: | |
2024 | case TYPE_CODE_UNION: | |
2025 | case TYPE_CODE_ARRAY: | |
2026 | case TYPE_CODE_FUNC: | |
2027 | case TYPE_CODE_MEMBER: | |
2028 | case TYPE_CODE_METHOD: | |
2029 | return 0; | |
2030 | break; | |
2031 | ||
2032 | default: | |
2033 | return 1; | |
2034 | break; | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | static char * | |
fba45db2 | 2039 | c_value_of_variable (struct varobj *var) |
8b93c638 | 2040 | { |
8b93c638 JM |
2041 | /* BOGUS: if val_print sees a struct/class, it will print out its |
2042 | children instead of "{...}" */ | |
e64d9b3d MH |
2043 | |
2044 | switch (TYPE_CODE (get_type (var))) | |
8b93c638 JM |
2045 | { |
2046 | case TYPE_CODE_STRUCT: | |
2047 | case TYPE_CODE_UNION: | |
2048 | return xstrdup ("{...}"); | |
2049 | /* break; */ | |
2050 | ||
2051 | case TYPE_CODE_ARRAY: | |
2052 | { | |
e64d9b3d | 2053 | char *number; |
b435e160 | 2054 | number = xstrprintf ("[%d]", var->num_children); |
e64d9b3d | 2055 | return (number); |
8b93c638 JM |
2056 | } |
2057 | /* break; */ | |
2058 | ||
2059 | default: | |
2060 | { | |
575bbeb6 KS |
2061 | if (var->value == NULL) |
2062 | { | |
2063 | /* This can happen if we attempt to get the value of a struct | |
2064 | member when the parent is an invalid pointer. This is an | |
2065 | error condition, so we should tell the caller. */ | |
2066 | return NULL; | |
2067 | } | |
2068 | else | |
2069 | { | |
e64d9b3d MH |
2070 | long dummy; |
2071 | struct ui_file *stb = mem_fileopen (); | |
2072 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
2073 | char *thevalue; | |
2074 | ||
d69fe07e | 2075 | if (value_lazy (var->value)) |
575bbeb6 | 2076 | gdb_value_fetch_lazy (var->value); |
df407dfe | 2077 | val_print (value_type (var->value), |
990a07ab | 2078 | value_contents_raw (var->value), 0, |
7f19b9a2 AC |
2079 | VALUE_ADDRESS (var->value), stb, |
2080 | format_code[(int) var->format], 1, 0, 0); | |
575bbeb6 KS |
2081 | thevalue = ui_file_xstrdup (stb, &dummy); |
2082 | do_cleanups (old_chain); | |
8b93c638 JM |
2083 | return thevalue; |
2084 | } | |
e64d9b3d | 2085 | } |
8b93c638 JM |
2086 | } |
2087 | } | |
2088 | \f | |
2089 | ||
2090 | /* C++ */ | |
2091 | ||
2092 | static int | |
fba45db2 | 2093 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
2094 | { |
2095 | struct type *type; | |
2096 | int children, dont_know; | |
2097 | ||
2098 | dont_know = 1; | |
2099 | children = 0; | |
2100 | ||
2101 | if (!CPLUS_FAKE_CHILD (var)) | |
2102 | { | |
2103 | type = get_type_deref (var); | |
2104 | ||
2105 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 2106 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
2107 | { |
2108 | int kids[3]; | |
2109 | ||
2110 | cplus_class_num_children (type, kids); | |
2111 | if (kids[v_public] != 0) | |
2112 | children++; | |
2113 | if (kids[v_private] != 0) | |
2114 | children++; | |
2115 | if (kids[v_protected] != 0) | |
2116 | children++; | |
2117 | ||
2118 | /* Add any baseclasses */ | |
2119 | children += TYPE_N_BASECLASSES (type); | |
2120 | dont_know = 0; | |
2121 | ||
2122 | /* FIXME: save children in var */ | |
2123 | } | |
2124 | } | |
2125 | else | |
2126 | { | |
2127 | int kids[3]; | |
2128 | ||
2129 | type = get_type_deref (var->parent); | |
2130 | ||
2131 | cplus_class_num_children (type, kids); | |
6e382aa3 | 2132 | if (strcmp (var->name, "public") == 0) |
8b93c638 | 2133 | children = kids[v_public]; |
6e382aa3 | 2134 | else if (strcmp (var->name, "private") == 0) |
8b93c638 JM |
2135 | children = kids[v_private]; |
2136 | else | |
2137 | children = kids[v_protected]; | |
2138 | dont_know = 0; | |
2139 | } | |
2140 | ||
2141 | if (dont_know) | |
2142 | children = c_number_of_children (var); | |
2143 | ||
2144 | return children; | |
2145 | } | |
2146 | ||
2147 | /* Compute # of public, private, and protected variables in this class. | |
2148 | That means we need to descend into all baseclasses and find out | |
2149 | how many are there, too. */ | |
2150 | static void | |
1669605f | 2151 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 JM |
2152 | { |
2153 | int i; | |
2154 | ||
2155 | children[v_public] = 0; | |
2156 | children[v_private] = 0; | |
2157 | children[v_protected] = 0; | |
2158 | ||
2159 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) | |
2160 | { | |
2161 | /* If we have a virtual table pointer, omit it. */ | |
72330bd6 | 2162 | if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i) |
8b93c638 JM |
2163 | continue; |
2164 | ||
2165 | if (TYPE_FIELD_PROTECTED (type, i)) | |
2166 | children[v_protected]++; | |
2167 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
2168 | children[v_private]++; | |
2169 | else | |
2170 | children[v_public]++; | |
2171 | } | |
2172 | } | |
2173 | ||
2174 | static char * | |
fba45db2 | 2175 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2176 | { |
2177 | return c_name_of_variable (parent); | |
2178 | } | |
2179 | ||
2180 | static char * | |
fba45db2 | 2181 | cplus_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2182 | { |
2183 | char *name; | |
2184 | struct type *type; | |
8b93c638 JM |
2185 | |
2186 | if (CPLUS_FAKE_CHILD (parent)) | |
2187 | { | |
2188 | /* Looking for children of public, private, or protected. */ | |
2189 | type = get_type_deref (parent->parent); | |
2190 | } | |
2191 | else | |
2192 | type = get_type_deref (parent); | |
2193 | ||
2194 | name = NULL; | |
2195 | switch (TYPE_CODE (type)) | |
2196 | { | |
2197 | case TYPE_CODE_STRUCT: | |
2198 | case TYPE_CODE_UNION: | |
8b93c638 JM |
2199 | if (CPLUS_FAKE_CHILD (parent)) |
2200 | { | |
6e382aa3 JJ |
2201 | /* The fields of the class type are ordered as they |
2202 | appear in the class. We are given an index for a | |
2203 | particular access control type ("public","protected", | |
2204 | or "private"). We must skip over fields that don't | |
2205 | have the access control we are looking for to properly | |
2206 | find the indexed field. */ | |
2207 | int type_index = TYPE_N_BASECLASSES (type); | |
2208 | if (strcmp (parent->name, "private") == 0) | |
2209 | { | |
2210 | while (index >= 0) | |
2211 | { | |
2212 | if (TYPE_VPTR_BASETYPE (type) == type | |
2213 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2214 | ; /* ignore vptr */ | |
2215 | else if (TYPE_FIELD_PRIVATE (type, type_index)) | |
2216 | --index; | |
2217 | ++type_index; | |
2218 | } | |
2219 | --type_index; | |
2220 | } | |
2221 | else if (strcmp (parent->name, "protected") == 0) | |
2222 | { | |
2223 | while (index >= 0) | |
2224 | { | |
2225 | if (TYPE_VPTR_BASETYPE (type) == type | |
2226 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2227 | ; /* ignore vptr */ | |
2228 | else if (TYPE_FIELD_PROTECTED (type, type_index)) | |
2229 | --index; | |
2230 | ++type_index; | |
2231 | } | |
2232 | --type_index; | |
2233 | } | |
2234 | else | |
2235 | { | |
2236 | while (index >= 0) | |
2237 | { | |
2238 | if (TYPE_VPTR_BASETYPE (type) == type | |
2239 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2240 | ; /* ignore vptr */ | |
2241 | else if (!TYPE_FIELD_PRIVATE (type, type_index) && | |
2242 | !TYPE_FIELD_PROTECTED (type, type_index)) | |
2243 | --index; | |
2244 | ++type_index; | |
2245 | } | |
2246 | --type_index; | |
2247 | } | |
2248 | ||
2249 | name = TYPE_FIELD_NAME (type, type_index); | |
8b93c638 JM |
2250 | } |
2251 | else if (index < TYPE_N_BASECLASSES (type)) | |
6e382aa3 | 2252 | /* We are looking up the name of a base class */ |
8b93c638 JM |
2253 | name = TYPE_FIELD_NAME (type, index); |
2254 | else | |
2255 | { | |
6e382aa3 JJ |
2256 | int children[3]; |
2257 | cplus_class_num_children(type, children); | |
2258 | ||
8b93c638 | 2259 | /* Everything beyond the baseclasses can |
6e382aa3 JJ |
2260 | only be "public", "private", or "protected" |
2261 | ||
2262 | The special "fake" children are always output by varobj in | |
2263 | this order. So if INDEX == 2, it MUST be "protected". */ | |
8b93c638 JM |
2264 | index -= TYPE_N_BASECLASSES (type); |
2265 | switch (index) | |
2266 | { | |
2267 | case 0: | |
6e382aa3 JJ |
2268 | if (children[v_public] > 0) |
2269 | name = "public"; | |
2270 | else if (children[v_private] > 0) | |
2271 | name = "private"; | |
2272 | else | |
2273 | name = "protected"; | |
2274 | break; | |
8b93c638 | 2275 | case 1: |
6e382aa3 | 2276 | if (children[v_public] > 0) |
8b93c638 | 2277 | { |
6e382aa3 JJ |
2278 | if (children[v_private] > 0) |
2279 | name = "private"; | |
2280 | else | |
2281 | name = "protected"; | |
8b93c638 | 2282 | } |
6e382aa3 JJ |
2283 | else if (children[v_private] > 0) |
2284 | name = "protected"; | |
2285 | break; | |
8b93c638 | 2286 | case 2: |
6e382aa3 JJ |
2287 | /* Must be protected */ |
2288 | name = "protected"; | |
2289 | break; | |
8b93c638 JM |
2290 | default: |
2291 | /* error! */ | |
2292 | break; | |
2293 | } | |
2294 | } | |
2295 | break; | |
2296 | ||
2297 | default: | |
2298 | break; | |
2299 | } | |
2300 | ||
2301 | if (name == NULL) | |
2302 | return c_name_of_child (parent, index); | |
2303 | else | |
2304 | { | |
2305 | if (name != NULL) | |
2306 | name = savestring (name, strlen (name)); | |
2307 | } | |
2308 | ||
2309 | return name; | |
2310 | } | |
2311 | ||
30b28db1 | 2312 | static struct value * |
fba45db2 | 2313 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 2314 | { |
73a93a32 | 2315 | return c_value_of_root (var_handle); |
8b93c638 JM |
2316 | } |
2317 | ||
30b28db1 | 2318 | static struct value * |
fba45db2 | 2319 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2320 | { |
2321 | struct type *type; | |
30b28db1 | 2322 | struct value *value; |
8b93c638 JM |
2323 | |
2324 | if (CPLUS_FAKE_CHILD (parent)) | |
2325 | type = get_type_deref (parent->parent); | |
2326 | else | |
2327 | type = get_type_deref (parent); | |
2328 | ||
2329 | value = NULL; | |
8b93c638 JM |
2330 | |
2331 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
2332 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) | |
2333 | { | |
2334 | if (CPLUS_FAKE_CHILD (parent)) | |
2335 | { | |
5bbc1a8e | 2336 | char *name; |
30b28db1 | 2337 | struct value *temp = parent->parent->value; |
30c6b1fb | 2338 | |
575bbeb6 KS |
2339 | if (temp == NULL) |
2340 | return NULL; | |
2341 | ||
5bbc1a8e | 2342 | name = name_of_child (parent, index); |
30c6b1fb KS |
2343 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
2344 | "cplus_structure"); | |
2345 | if (value != NULL) | |
2346 | release_value (value); | |
5bbc1a8e KS |
2347 | |
2348 | xfree (name); | |
8b93c638 JM |
2349 | } |
2350 | else if (index >= TYPE_N_BASECLASSES (type)) | |
2351 | { | |
2352 | /* public, private, or protected */ | |
2353 | return NULL; | |
2354 | } | |
2355 | else | |
2356 | { | |
2357 | /* Baseclass */ | |
2358 | if (parent->value != NULL) | |
2359 | { | |
575bbeb6 | 2360 | struct value *temp = NULL; |
8b93c638 | 2361 | |
df407dfe AC |
2362 | if (TYPE_CODE (value_type (parent->value)) == TYPE_CODE_PTR |
2363 | || TYPE_CODE (value_type (parent->value)) == TYPE_CODE_REF) | |
4abb499e KS |
2364 | { |
2365 | if (!gdb_value_ind (parent->value, &temp)) | |
2366 | return NULL; | |
2367 | } | |
8b93c638 JM |
2368 | else |
2369 | temp = parent->value; | |
2370 | ||
575bbeb6 KS |
2371 | if (temp != NULL) |
2372 | { | |
2373 | value = value_cast (TYPE_FIELD_TYPE (type, index), temp); | |
2374 | release_value (value); | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | /* We failed to evaluate the parent's value, so don't even | |
2379 | bother trying to evaluate this child. */ | |
2380 | return NULL; | |
2381 | } | |
8b93c638 JM |
2382 | } |
2383 | } | |
2384 | } | |
2385 | ||
2386 | if (value == NULL) | |
2387 | return c_value_of_child (parent, index); | |
2388 | ||
2389 | return value; | |
2390 | } | |
2391 | ||
2392 | static struct type * | |
fba45db2 | 2393 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2394 | { |
2395 | struct type *type, *t; | |
2396 | ||
575bbeb6 KS |
2397 | if (CPLUS_FAKE_CHILD (parent)) |
2398 | { | |
2399 | /* Looking for the type of a child of public, private, or protected. */ | |
2400 | t = get_type_deref (parent->parent); | |
2401 | } | |
2402 | else | |
2403 | t = get_type_deref (parent); | |
2404 | ||
8b93c638 JM |
2405 | type = NULL; |
2406 | switch (TYPE_CODE (t)) | |
2407 | { | |
2408 | case TYPE_CODE_STRUCT: | |
2409 | case TYPE_CODE_UNION: | |
575bbeb6 | 2410 | if (CPLUS_FAKE_CHILD (parent)) |
8b93c638 | 2411 | { |
575bbeb6 KS |
2412 | char *name = cplus_name_of_child (parent, index); |
2413 | type = lookup_struct_elt_type (t, name, 0); | |
2414 | xfree (name); | |
8b93c638 | 2415 | } |
575bbeb6 KS |
2416 | else if (index < TYPE_N_BASECLASSES (t)) |
2417 | type = TYPE_FIELD_TYPE (t, index); | |
8b93c638 JM |
2418 | else |
2419 | { | |
575bbeb6 KS |
2420 | /* special */ |
2421 | return NULL; | |
8b93c638 JM |
2422 | } |
2423 | break; | |
2424 | ||
2425 | default: | |
2426 | break; | |
2427 | } | |
2428 | ||
2429 | if (type == NULL) | |
2430 | return c_type_of_child (parent, index); | |
2431 | ||
2432 | return type; | |
2433 | } | |
2434 | ||
2435 | static int | |
fba45db2 | 2436 | cplus_variable_editable (struct varobj *var) |
8b93c638 JM |
2437 | { |
2438 | if (CPLUS_FAKE_CHILD (var)) | |
2439 | return 0; | |
2440 | ||
2441 | return c_variable_editable (var); | |
2442 | } | |
2443 | ||
2444 | static char * | |
fba45db2 | 2445 | cplus_value_of_variable (struct varobj *var) |
8b93c638 JM |
2446 | { |
2447 | ||
2448 | /* If we have one of our special types, don't print out | |
2449 | any value. */ | |
2450 | if (CPLUS_FAKE_CHILD (var)) | |
2451 | return xstrdup (""); | |
2452 | ||
2453 | return c_value_of_variable (var); | |
2454 | } | |
2455 | \f | |
2456 | /* Java */ | |
2457 | ||
2458 | static int | |
fba45db2 | 2459 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
2460 | { |
2461 | return cplus_number_of_children (var); | |
2462 | } | |
2463 | ||
2464 | static char * | |
fba45db2 | 2465 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2466 | { |
2467 | char *p, *name; | |
2468 | ||
2469 | name = cplus_name_of_variable (parent); | |
2470 | /* If the name has "-" in it, it is because we | |
2471 | needed to escape periods in the name... */ | |
2472 | p = name; | |
2473 | ||
2474 | while (*p != '\000') | |
2475 | { | |
2476 | if (*p == '-') | |
2477 | *p = '.'; | |
2478 | p++; | |
2479 | } | |
2480 | ||
2481 | return name; | |
2482 | } | |
2483 | ||
2484 | static char * | |
fba45db2 | 2485 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2486 | { |
2487 | char *name, *p; | |
2488 | ||
2489 | name = cplus_name_of_child (parent, index); | |
2490 | /* Escape any periods in the name... */ | |
2491 | p = name; | |
2492 | ||
2493 | while (*p != '\000') | |
2494 | { | |
2495 | if (*p == '.') | |
2496 | *p = '-'; | |
2497 | p++; | |
2498 | } | |
2499 | ||
2500 | return name; | |
2501 | } | |
2502 | ||
30b28db1 | 2503 | static struct value * |
fba45db2 | 2504 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 2505 | { |
73a93a32 | 2506 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
2507 | } |
2508 | ||
30b28db1 | 2509 | static struct value * |
fba45db2 | 2510 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2511 | { |
2512 | return cplus_value_of_child (parent, index); | |
2513 | } | |
2514 | ||
2515 | static struct type * | |
fba45db2 | 2516 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2517 | { |
2518 | return cplus_type_of_child (parent, index); | |
2519 | } | |
2520 | ||
2521 | static int | |
fba45db2 | 2522 | java_variable_editable (struct varobj *var) |
8b93c638 JM |
2523 | { |
2524 | return cplus_variable_editable (var); | |
2525 | } | |
2526 | ||
2527 | static char * | |
fba45db2 | 2528 | java_value_of_variable (struct varobj *var) |
8b93c638 JM |
2529 | { |
2530 | return cplus_value_of_variable (var); | |
2531 | } | |
2532 | \f | |
2533 | extern void _initialize_varobj (void); | |
2534 | void | |
2535 | _initialize_varobj (void) | |
2536 | { | |
2537 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
2538 | ||
2539 | varobj_table = xmalloc (sizeof_table); | |
2540 | memset (varobj_table, 0, sizeof_table); | |
2541 | ||
85c07804 AC |
2542 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
2543 | &varobjdebug, _("\ | |
2544 | Set varobj debugging."), _("\ | |
2545 | Show varobj debugging."), _("\ | |
2546 | When non-zero, varobj debugging is enabled."), | |
2547 | NULL, | |
2548 | NULL, /* FIXME: i18n: */ | |
2549 | &setlist, &showlist); | |
8b93c638 | 2550 | } |