Commit | Line | Data |
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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; | |
920d2a44 AC |
37 | static void |
38 | show_varobjdebug (struct ui_file *file, int from_tty, | |
39 | struct cmd_list_element *c, const char *value) | |
40 | { | |
41 | fprintf_filtered (file, _("Varobj debugging is %s.\n"), value); | |
42 | } | |
8b93c638 JM |
43 | |
44 | /* String representations of gdb's format codes */ | |
45 | char *varobj_format_string[] = | |
72330bd6 | 46 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 JM |
47 | |
48 | /* String representations of gdb's known languages */ | |
72330bd6 | 49 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 JM |
50 | |
51 | /* Data structures */ | |
52 | ||
53 | /* Every root variable has one of these structures saved in its | |
54 | varobj. Members which must be free'd are noted. */ | |
55 | struct varobj_root | |
72330bd6 | 56 | { |
8b93c638 | 57 | |
72330bd6 AC |
58 | /* Alloc'd expression for this parent. */ |
59 | struct expression *exp; | |
8b93c638 | 60 | |
72330bd6 AC |
61 | /* Block for which this expression is valid */ |
62 | struct block *valid_block; | |
8b93c638 | 63 | |
72330bd6 | 64 | /* The frame for this expression */ |
e64d9b3d | 65 | struct frame_id frame; |
8b93c638 | 66 | |
72330bd6 AC |
67 | /* If 1, "update" always recomputes the frame & valid block |
68 | using the currently selected frame. */ | |
69 | int use_selected_frame; | |
73a93a32 | 70 | |
72330bd6 AC |
71 | /* Language info for this variable and its children */ |
72 | struct language_specific *lang; | |
8b93c638 | 73 | |
72330bd6 AC |
74 | /* The varobj for this root node. */ |
75 | struct varobj *rootvar; | |
8b93c638 | 76 | |
72330bd6 AC |
77 | /* Next root variable */ |
78 | struct varobj_root *next; | |
79 | }; | |
8b93c638 JM |
80 | |
81 | /* Every variable in the system has a structure of this type defined | |
82 | for it. This structure holds all information necessary to manipulate | |
83 | a particular object variable. Members which must be freed are noted. */ | |
84 | struct varobj | |
72330bd6 | 85 | { |
8b93c638 | 86 | |
72330bd6 AC |
87 | /* Alloc'd name of the variable for this object.. If this variable is a |
88 | child, then this name will be the child's source name. | |
89 | (bar, not foo.bar) */ | |
90 | /* NOTE: This is the "expression" */ | |
91 | char *name; | |
8b93c638 | 92 | |
72330bd6 AC |
93 | /* The alloc'd name for this variable's object. This is here for |
94 | convenience when constructing this object's children. */ | |
95 | char *obj_name; | |
8b93c638 | 96 | |
72330bd6 AC |
97 | /* Index of this variable in its parent or -1 */ |
98 | int index; | |
8b93c638 | 99 | |
72330bd6 AC |
100 | /* The type of this variable. This may NEVER be NULL. */ |
101 | struct type *type; | |
8b93c638 | 102 | |
72330bd6 | 103 | /* The value of this expression or subexpression. This may be NULL. */ |
30b28db1 | 104 | struct value *value; |
8b93c638 | 105 | |
72330bd6 AC |
106 | /* Did an error occur evaluating the expression or getting its value? */ |
107 | int error; | |
8b93c638 | 108 | |
72330bd6 AC |
109 | /* The number of (immediate) children this variable has */ |
110 | int num_children; | |
8b93c638 | 111 | |
72330bd6 AC |
112 | /* If this object is a child, this points to its immediate parent. */ |
113 | struct varobj *parent; | |
8b93c638 | 114 | |
72330bd6 AC |
115 | /* A list of this object's children */ |
116 | struct varobj_child *children; | |
8b93c638 | 117 | |
72330bd6 AC |
118 | /* Description of the root variable. Points to root variable for children. */ |
119 | struct varobj_root *root; | |
8b93c638 | 120 | |
72330bd6 AC |
121 | /* The format of the output for this object */ |
122 | enum varobj_display_formats format; | |
fb9b6b35 JJ |
123 | |
124 | /* Was this variable updated via a varobj_set_value operation */ | |
125 | int updated; | |
72330bd6 | 126 | }; |
8b93c638 JM |
127 | |
128 | /* Every variable keeps a linked list of its children, described | |
129 | by the following structure. */ | |
130 | /* FIXME: Deprecated. All should use vlist instead */ | |
131 | ||
132 | struct varobj_child | |
72330bd6 | 133 | { |
8b93c638 | 134 | |
72330bd6 AC |
135 | /* Pointer to the child's data */ |
136 | struct varobj *child; | |
8b93c638 | 137 | |
72330bd6 AC |
138 | /* Pointer to the next child */ |
139 | struct varobj_child *next; | |
140 | }; | |
8b93c638 JM |
141 | |
142 | /* A stack of varobjs */ | |
143 | /* FIXME: Deprecated. All should use vlist instead */ | |
144 | ||
145 | struct vstack | |
72330bd6 AC |
146 | { |
147 | struct varobj *var; | |
148 | struct vstack *next; | |
149 | }; | |
8b93c638 JM |
150 | |
151 | struct cpstack | |
72330bd6 AC |
152 | { |
153 | char *name; | |
154 | struct cpstack *next; | |
155 | }; | |
8b93c638 JM |
156 | |
157 | /* A list of varobjs */ | |
158 | ||
159 | struct vlist | |
72330bd6 AC |
160 | { |
161 | struct varobj *var; | |
162 | struct vlist *next; | |
163 | }; | |
8b93c638 JM |
164 | |
165 | /* Private function prototypes */ | |
166 | ||
167 | /* Helper functions for the above subcommands. */ | |
168 | ||
a14ed312 | 169 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 170 | |
a14ed312 KB |
171 | static void delete_variable_1 (struct cpstack **, int *, |
172 | struct varobj *, int, int); | |
8b93c638 | 173 | |
a14ed312 | 174 | static int install_variable (struct varobj *); |
8b93c638 | 175 | |
a14ed312 | 176 | static void uninstall_variable (struct varobj *); |
8b93c638 | 177 | |
a14ed312 | 178 | static struct varobj *child_exists (struct varobj *, char *); |
8b93c638 | 179 | |
a14ed312 | 180 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 181 | |
a14ed312 | 182 | static void save_child_in_parent (struct varobj *, struct varobj *); |
8b93c638 | 183 | |
a14ed312 | 184 | static void remove_child_from_parent (struct varobj *, struct varobj *); |
8b93c638 JM |
185 | |
186 | /* Utility routines */ | |
187 | ||
a14ed312 | 188 | static struct varobj *new_variable (void); |
8b93c638 | 189 | |
a14ed312 | 190 | static struct varobj *new_root_variable (void); |
8b93c638 | 191 | |
a14ed312 | 192 | static void free_variable (struct varobj *var); |
8b93c638 | 193 | |
74b7792f AC |
194 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
195 | ||
a14ed312 | 196 | static struct type *get_type (struct varobj *var); |
8b93c638 | 197 | |
a14ed312 | 198 | static struct type *get_type_deref (struct varobj *var); |
8b93c638 | 199 | |
a14ed312 | 200 | static struct type *get_target_type (struct type *); |
8b93c638 | 201 | |
a14ed312 | 202 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 203 | |
30b28db1 | 204 | static int my_value_equal (struct value *, struct value *, int *); |
8b93c638 | 205 | |
a14ed312 | 206 | static void vpush (struct vstack **pstack, struct varobj *var); |
8b93c638 | 207 | |
a14ed312 | 208 | static struct varobj *vpop (struct vstack **pstack); |
8b93c638 | 209 | |
a14ed312 | 210 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 211 | |
a14ed312 | 212 | static char *cppop (struct cpstack **pstack); |
8b93c638 JM |
213 | |
214 | /* Language-specific routines. */ | |
215 | ||
a14ed312 | 216 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 217 | |
a14ed312 | 218 | static int number_of_children (struct varobj *); |
8b93c638 | 219 | |
a14ed312 | 220 | static char *name_of_variable (struct varobj *); |
8b93c638 | 221 | |
a14ed312 | 222 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 223 | |
30b28db1 | 224 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 225 | |
30b28db1 | 226 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 227 | |
a14ed312 | 228 | static struct type *type_of_child (struct varobj *var); |
8b93c638 | 229 | |
a14ed312 | 230 | static int variable_editable (struct varobj *var); |
8b93c638 | 231 | |
a14ed312 | 232 | static char *my_value_of_variable (struct varobj *var); |
8b93c638 | 233 | |
a14ed312 | 234 | static int type_changeable (struct varobj *var); |
8b93c638 JM |
235 | |
236 | /* C implementation */ | |
237 | ||
a14ed312 | 238 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 239 | |
a14ed312 | 240 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 241 | |
a14ed312 | 242 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 243 | |
30b28db1 | 244 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 245 | |
30b28db1 | 246 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 247 | |
a14ed312 | 248 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 249 | |
a14ed312 | 250 | static int c_variable_editable (struct varobj *var); |
8b93c638 | 251 | |
a14ed312 | 252 | static char *c_value_of_variable (struct varobj *var); |
8b93c638 JM |
253 | |
254 | /* C++ implementation */ | |
255 | ||
a14ed312 | 256 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 257 | |
a14ed312 | 258 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 259 | |
a14ed312 | 260 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 261 | |
a14ed312 | 262 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 263 | |
30b28db1 | 264 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 265 | |
30b28db1 | 266 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 267 | |
a14ed312 | 268 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 269 | |
a14ed312 | 270 | static int cplus_variable_editable (struct varobj *var); |
8b93c638 | 271 | |
a14ed312 | 272 | static char *cplus_value_of_variable (struct varobj *var); |
8b93c638 JM |
273 | |
274 | /* Java implementation */ | |
275 | ||
a14ed312 | 276 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 277 | |
a14ed312 | 278 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 279 | |
a14ed312 | 280 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 281 | |
30b28db1 | 282 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 283 | |
30b28db1 | 284 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 285 | |
a14ed312 | 286 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 287 | |
a14ed312 | 288 | static int java_variable_editable (struct varobj *var); |
8b93c638 | 289 | |
a14ed312 | 290 | static char *java_value_of_variable (struct varobj *var); |
8b93c638 JM |
291 | |
292 | /* The language specific vector */ | |
293 | ||
294 | struct language_specific | |
72330bd6 | 295 | { |
8b93c638 | 296 | |
72330bd6 AC |
297 | /* The language of this variable */ |
298 | enum varobj_languages language; | |
8b93c638 | 299 | |
72330bd6 AC |
300 | /* The number of children of PARENT. */ |
301 | int (*number_of_children) (struct varobj * parent); | |
8b93c638 | 302 | |
72330bd6 AC |
303 | /* The name (expression) of a root varobj. */ |
304 | char *(*name_of_variable) (struct varobj * parent); | |
8b93c638 | 305 | |
72330bd6 AC |
306 | /* The name of the INDEX'th child of PARENT. */ |
307 | char *(*name_of_child) (struct varobj * parent, int index); | |
8b93c638 | 308 | |
30b28db1 AC |
309 | /* The ``struct value *'' of the root variable ROOT. */ |
310 | struct value *(*value_of_root) (struct varobj ** root_handle); | |
8b93c638 | 311 | |
30b28db1 AC |
312 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
313 | struct value *(*value_of_child) (struct varobj * parent, int index); | |
8b93c638 | 314 | |
72330bd6 AC |
315 | /* The type of the INDEX'th child of PARENT. */ |
316 | struct type *(*type_of_child) (struct varobj * parent, int index); | |
8b93c638 | 317 | |
72330bd6 AC |
318 | /* Is VAR editable? */ |
319 | int (*variable_editable) (struct varobj * var); | |
8b93c638 | 320 | |
72330bd6 AC |
321 | /* The current value of VAR. */ |
322 | char *(*value_of_variable) (struct varobj * var); | |
323 | }; | |
8b93c638 JM |
324 | |
325 | /* Array of known source language routines. */ | |
326 | static struct language_specific | |
72330bd6 | 327 | languages[vlang_end][sizeof (struct language_specific)] = { |
8b93c638 JM |
328 | /* Unknown (try treating as C */ |
329 | { | |
72330bd6 AC |
330 | vlang_unknown, |
331 | c_number_of_children, | |
332 | c_name_of_variable, | |
333 | c_name_of_child, | |
334 | c_value_of_root, | |
335 | c_value_of_child, | |
336 | c_type_of_child, | |
337 | c_variable_editable, | |
338 | c_value_of_variable} | |
8b93c638 JM |
339 | , |
340 | /* C */ | |
341 | { | |
72330bd6 AC |
342 | vlang_c, |
343 | c_number_of_children, | |
344 | c_name_of_variable, | |
345 | c_name_of_child, | |
346 | c_value_of_root, | |
347 | c_value_of_child, | |
348 | c_type_of_child, | |
349 | c_variable_editable, | |
350 | c_value_of_variable} | |
8b93c638 JM |
351 | , |
352 | /* C++ */ | |
353 | { | |
72330bd6 AC |
354 | vlang_cplus, |
355 | cplus_number_of_children, | |
356 | cplus_name_of_variable, | |
357 | cplus_name_of_child, | |
358 | cplus_value_of_root, | |
359 | cplus_value_of_child, | |
360 | cplus_type_of_child, | |
361 | cplus_variable_editable, | |
362 | cplus_value_of_variable} | |
8b93c638 JM |
363 | , |
364 | /* Java */ | |
365 | { | |
72330bd6 AC |
366 | vlang_java, |
367 | java_number_of_children, | |
368 | java_name_of_variable, | |
369 | java_name_of_child, | |
370 | java_value_of_root, | |
371 | java_value_of_child, | |
372 | java_type_of_child, | |
373 | java_variable_editable, | |
374 | java_value_of_variable} | |
8b93c638 JM |
375 | }; |
376 | ||
377 | /* A little convenience enum for dealing with C++/Java */ | |
378 | enum vsections | |
72330bd6 AC |
379 | { |
380 | v_public = 0, v_private, v_protected | |
381 | }; | |
8b93c638 JM |
382 | |
383 | /* Private data */ | |
384 | ||
385 | /* Mappings of varobj_display_formats enums to gdb's format codes */ | |
72330bd6 | 386 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 JM |
387 | |
388 | /* Header of the list of root variable objects */ | |
389 | static struct varobj_root *rootlist; | |
390 | static int rootcount = 0; /* number of root varobjs in the list */ | |
391 | ||
392 | /* Prime number indicating the number of buckets in the hash table */ | |
393 | /* A prime large enough to avoid too many colisions */ | |
394 | #define VAROBJ_TABLE_SIZE 227 | |
395 | ||
396 | /* Pointer to the varobj hash table (built at run time) */ | |
397 | static struct vlist **varobj_table; | |
398 | ||
8b93c638 JM |
399 | /* Is the variable X one of our "fake" children? */ |
400 | #define CPLUS_FAKE_CHILD(x) \ | |
401 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
402 | \f | |
403 | ||
404 | /* API Implementation */ | |
405 | ||
406 | /* Creates a varobj (not its children) */ | |
407 | ||
7d8547c9 AC |
408 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
409 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ | |
410 | ||
411 | static struct frame_info * | |
412 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) | |
413 | { | |
414 | struct frame_info *frame = NULL; | |
415 | ||
416 | if (frame_addr == (CORE_ADDR) 0) | |
417 | return NULL; | |
418 | ||
419 | while (1) | |
420 | { | |
421 | frame = get_prev_frame (frame); | |
422 | if (frame == NULL) | |
423 | return NULL; | |
eb5492fa | 424 | if (get_frame_base_address (frame) == frame_addr) |
7d8547c9 AC |
425 | return frame; |
426 | } | |
427 | } | |
428 | ||
8b93c638 JM |
429 | struct varobj * |
430 | varobj_create (char *objname, | |
72330bd6 | 431 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
432 | { |
433 | struct varobj *var; | |
2c67cb8b AC |
434 | struct frame_info *fi; |
435 | struct frame_info *old_fi = NULL; | |
8b93c638 JM |
436 | struct block *block; |
437 | struct cleanup *old_chain; | |
438 | ||
439 | /* Fill out a varobj structure for the (root) variable being constructed. */ | |
440 | var = new_root_variable (); | |
74b7792f | 441 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
442 | |
443 | if (expression != NULL) | |
444 | { | |
445 | char *p; | |
446 | enum varobj_languages lang; | |
447 | ||
448 | /* Parse and evaluate the expression, filling in as much | |
449 | of the variable's data as possible */ | |
450 | ||
451 | /* Allow creator to specify context of variable */ | |
72330bd6 | 452 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
6e7f8b9c | 453 | fi = deprecated_selected_frame; |
8b93c638 | 454 | else |
7d8547c9 AC |
455 | /* FIXME: cagney/2002-11-23: This code should be doing a |
456 | lookup using the frame ID and not just the frame's | |
457 | ``address''. This, of course, means an interface change. | |
458 | However, with out that interface change ISAs, such as the | |
459 | ia64 with its two stacks, won't work. Similar goes for the | |
460 | case where there is a frameless function. */ | |
8b93c638 JM |
461 | fi = find_frame_addr_in_frame_chain (frame); |
462 | ||
73a93a32 JI |
463 | /* frame = -2 means always use selected frame */ |
464 | if (type == USE_SELECTED_FRAME) | |
465 | var->root->use_selected_frame = 1; | |
466 | ||
8b93c638 JM |
467 | block = NULL; |
468 | if (fi != NULL) | |
ae767bfb | 469 | block = get_frame_block (fi, 0); |
8b93c638 JM |
470 | |
471 | p = expression; | |
472 | innermost_block = NULL; | |
73a93a32 JI |
473 | /* Wrap the call to parse expression, so we can |
474 | return a sensible error. */ | |
475 | if (!gdb_parse_exp_1 (&p, block, 0, &var->root->exp)) | |
476 | { | |
477 | return NULL; | |
478 | } | |
8b93c638 JM |
479 | |
480 | /* Don't allow variables to be created for types. */ | |
481 | if (var->root->exp->elts[0].opcode == OP_TYPE) | |
482 | { | |
483 | do_cleanups (old_chain); | |
bc8332bb AC |
484 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
485 | " as an expression.\n"); | |
8b93c638 JM |
486 | return NULL; |
487 | } | |
488 | ||
489 | var->format = variable_default_display (var); | |
490 | var->root->valid_block = innermost_block; | |
491 | var->name = savestring (expression, strlen (expression)); | |
492 | ||
493 | /* When the frame is different from the current frame, | |
494 | we must select the appropriate frame before parsing | |
495 | the expression, otherwise the value will not be current. | |
496 | Since select_frame is so benign, just call it for all cases. */ | |
497 | if (fi != NULL) | |
498 | { | |
7a424e99 | 499 | var->root->frame = get_frame_id (fi); |
6e7f8b9c | 500 | old_fi = deprecated_selected_frame; |
0f7d239c | 501 | select_frame (fi); |
8b93c638 JM |
502 | } |
503 | ||
504 | /* We definitively need to catch errors here. | |
505 | If evaluate_expression succeeds we got the value we wanted. | |
506 | But if it fails, we still go on with a call to evaluate_type() */ | |
507 | if (gdb_evaluate_expression (var->root->exp, &var->value)) | |
508 | { | |
509 | /* no error */ | |
510 | release_value (var->value); | |
d69fe07e | 511 | if (value_lazy (var->value)) |
8b93c638 JM |
512 | gdb_value_fetch_lazy (var->value); |
513 | } | |
514 | else | |
515 | var->value = evaluate_type (var->root->exp); | |
516 | ||
df407dfe | 517 | var->type = value_type (var->value); |
8b93c638 JM |
518 | |
519 | /* Set language info */ | |
520 | lang = variable_language (var); | |
521 | var->root->lang = languages[lang]; | |
522 | ||
523 | /* Set ourselves as our root */ | |
524 | var->root->rootvar = var; | |
525 | ||
526 | /* Reset the selected frame */ | |
527 | if (fi != NULL) | |
0f7d239c | 528 | select_frame (old_fi); |
8b93c638 JM |
529 | } |
530 | ||
73a93a32 JI |
531 | /* If the variable object name is null, that means this |
532 | is a temporary variable, so don't install it. */ | |
533 | ||
534 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 JM |
535 | { |
536 | var->obj_name = savestring (objname, strlen (objname)); | |
537 | ||
538 | /* If a varobj name is duplicated, the install will fail so | |
539 | we must clenup */ | |
540 | if (!install_variable (var)) | |
541 | { | |
542 | do_cleanups (old_chain); | |
543 | return NULL; | |
544 | } | |
545 | } | |
546 | ||
547 | discard_cleanups (old_chain); | |
548 | return var; | |
549 | } | |
550 | ||
551 | /* Generates an unique name that can be used for a varobj */ | |
552 | ||
553 | char * | |
554 | varobj_gen_name (void) | |
555 | { | |
556 | static int id = 0; | |
e64d9b3d | 557 | char *obj_name; |
8b93c638 JM |
558 | |
559 | /* generate a name for this object */ | |
560 | id++; | |
b435e160 | 561 | obj_name = xstrprintf ("var%d", id); |
8b93c638 | 562 | |
e64d9b3d | 563 | return obj_name; |
8b93c638 JM |
564 | } |
565 | ||
566 | /* Given an "objname", returns the pointer to the corresponding varobj | |
567 | or NULL if not found */ | |
568 | ||
569 | struct varobj * | |
570 | varobj_get_handle (char *objname) | |
571 | { | |
572 | struct vlist *cv; | |
573 | const char *chp; | |
574 | unsigned int index = 0; | |
575 | unsigned int i = 1; | |
576 | ||
577 | for (chp = objname; *chp; chp++) | |
578 | { | |
579 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
580 | } | |
581 | ||
582 | cv = *(varobj_table + index); | |
583 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
584 | cv = cv->next; | |
585 | ||
586 | if (cv == NULL) | |
8a3fe4f8 | 587 | error (_("Variable object not found")); |
8b93c638 JM |
588 | |
589 | return cv->var; | |
590 | } | |
591 | ||
592 | /* Given the handle, return the name of the object */ | |
593 | ||
594 | char * | |
595 | varobj_get_objname (struct varobj *var) | |
596 | { | |
597 | return var->obj_name; | |
598 | } | |
599 | ||
600 | /* Given the handle, return the expression represented by the object */ | |
601 | ||
602 | char * | |
603 | varobj_get_expression (struct varobj *var) | |
604 | { | |
605 | return name_of_variable (var); | |
606 | } | |
607 | ||
608 | /* Deletes a varobj and all its children if only_children == 0, | |
609 | otherwise deletes only the children; returns a malloc'ed list of all the | |
610 | (malloc'ed) names of the variables that have been deleted (NULL terminated) */ | |
611 | ||
612 | int | |
613 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
614 | { | |
615 | int delcount; | |
616 | int mycount; | |
617 | struct cpstack *result = NULL; | |
618 | char **cp; | |
619 | ||
620 | /* Initialize a stack for temporary results */ | |
621 | cppush (&result, NULL); | |
622 | ||
623 | if (only_children) | |
624 | /* Delete only the variable children */ | |
625 | delcount = delete_variable (&result, var, 1 /* only the children */ ); | |
626 | else | |
627 | /* Delete the variable and all its children */ | |
628 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); | |
629 | ||
630 | /* We may have been asked to return a list of what has been deleted */ | |
631 | if (dellist != NULL) | |
632 | { | |
633 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
634 | ||
635 | cp = *dellist; | |
636 | mycount = delcount; | |
637 | *cp = cppop (&result); | |
638 | while ((*cp != NULL) && (mycount > 0)) | |
639 | { | |
640 | mycount--; | |
641 | cp++; | |
642 | *cp = cppop (&result); | |
643 | } | |
644 | ||
645 | if (mycount || (*cp != NULL)) | |
8a3fe4f8 | 646 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
72330bd6 | 647 | mycount); |
8b93c638 JM |
648 | } |
649 | ||
650 | return delcount; | |
651 | } | |
652 | ||
653 | /* Set/Get variable object display format */ | |
654 | ||
655 | enum varobj_display_formats | |
656 | varobj_set_display_format (struct varobj *var, | |
657 | enum varobj_display_formats format) | |
658 | { | |
659 | switch (format) | |
660 | { | |
661 | case FORMAT_NATURAL: | |
662 | case FORMAT_BINARY: | |
663 | case FORMAT_DECIMAL: | |
664 | case FORMAT_HEXADECIMAL: | |
665 | case FORMAT_OCTAL: | |
666 | var->format = format; | |
667 | break; | |
668 | ||
669 | default: | |
670 | var->format = variable_default_display (var); | |
671 | } | |
672 | ||
673 | return var->format; | |
674 | } | |
675 | ||
676 | enum varobj_display_formats | |
677 | varobj_get_display_format (struct varobj *var) | |
678 | { | |
679 | return var->format; | |
680 | } | |
681 | ||
682 | int | |
683 | varobj_get_num_children (struct varobj *var) | |
684 | { | |
685 | if (var->num_children == -1) | |
686 | var->num_children = number_of_children (var); | |
687 | ||
688 | return var->num_children; | |
689 | } | |
690 | ||
691 | /* Creates a list of the immediate children of a variable object; | |
692 | the return code is the number of such children or -1 on error */ | |
693 | ||
694 | int | |
695 | varobj_list_children (struct varobj *var, struct varobj ***childlist) | |
696 | { | |
697 | struct varobj *child; | |
698 | char *name; | |
699 | int i; | |
700 | ||
701 | /* sanity check: have we been passed a pointer? */ | |
702 | if (childlist == NULL) | |
703 | return -1; | |
704 | ||
705 | *childlist = NULL; | |
706 | ||
707 | if (var->num_children == -1) | |
708 | var->num_children = number_of_children (var); | |
709 | ||
710 | /* List of children */ | |
711 | *childlist = xmalloc ((var->num_children + 1) * sizeof (struct varobj *)); | |
712 | ||
713 | for (i = 0; i < var->num_children; i++) | |
714 | { | |
715 | /* Mark as the end in case we bail out */ | |
716 | *((*childlist) + i) = NULL; | |
717 | ||
718 | /* check if child exists, if not create */ | |
719 | name = name_of_child (var, i); | |
720 | child = child_exists (var, name); | |
721 | if (child == NULL) | |
722 | child = create_child (var, i, name); | |
723 | ||
724 | *((*childlist) + i) = child; | |
725 | } | |
726 | ||
727 | /* End of list is marked by a NULL pointer */ | |
728 | *((*childlist) + i) = NULL; | |
729 | ||
730 | return var->num_children; | |
731 | } | |
732 | ||
733 | /* Obtain the type of an object Variable as a string similar to the one gdb | |
734 | prints on the console */ | |
735 | ||
736 | char * | |
737 | varobj_get_type (struct varobj *var) | |
738 | { | |
30b28db1 | 739 | struct value *val; |
8b93c638 JM |
740 | struct cleanup *old_chain; |
741 | struct ui_file *stb; | |
742 | char *thetype; | |
743 | long length; | |
744 | ||
745 | /* For the "fake" variables, do not return a type. (It's type is | |
746 | NULL, too.) */ | |
747 | if (CPLUS_FAKE_CHILD (var)) | |
748 | return NULL; | |
749 | ||
750 | stb = mem_fileopen (); | |
751 | old_chain = make_cleanup_ui_file_delete (stb); | |
752 | ||
30b28db1 | 753 | /* To print the type, we simply create a zero ``struct value *'' and |
8b93c638 JM |
754 | cast it to our type. We then typeprint this variable. */ |
755 | val = value_zero (var->type, not_lval); | |
df407dfe | 756 | type_print (value_type (val), "", stb, -1); |
8b93c638 JM |
757 | |
758 | thetype = ui_file_xstrdup (stb, &length); | |
759 | do_cleanups (old_chain); | |
760 | return thetype; | |
761 | } | |
762 | ||
763 | enum varobj_languages | |
764 | varobj_get_language (struct varobj *var) | |
765 | { | |
766 | return variable_language (var); | |
767 | } | |
768 | ||
769 | int | |
770 | varobj_get_attributes (struct varobj *var) | |
771 | { | |
772 | int attributes = 0; | |
773 | ||
774 | if (variable_editable (var)) | |
775 | /* FIXME: define masks for attributes */ | |
776 | attributes |= 0x00000001; /* Editable */ | |
777 | ||
778 | return attributes; | |
779 | } | |
780 | ||
781 | char * | |
782 | varobj_get_value (struct varobj *var) | |
783 | { | |
784 | return my_value_of_variable (var); | |
785 | } | |
786 | ||
787 | /* Set the value of an object variable (if it is editable) to the | |
788 | value of the given expression */ | |
789 | /* Note: Invokes functions that can call error() */ | |
790 | ||
791 | int | |
792 | varobj_set_value (struct varobj *var, char *expression) | |
793 | { | |
30b28db1 | 794 | struct value *val; |
8b93c638 | 795 | int offset = 0; |
a6c442d8 | 796 | int error = 0; |
8b93c638 JM |
797 | |
798 | /* The argument "expression" contains the variable's new value. | |
799 | We need to first construct a legal expression for this -- ugh! */ | |
800 | /* Does this cover all the bases? */ | |
801 | struct expression *exp; | |
30b28db1 | 802 | struct value *value; |
8b93c638 JM |
803 | int saved_input_radix = input_radix; |
804 | ||
575bbeb6 | 805 | if (var->value != NULL && variable_editable (var) && !var->error) |
8b93c638 JM |
806 | { |
807 | char *s = expression; | |
808 | int i; | |
8b93c638 JM |
809 | |
810 | input_radix = 10; /* ALWAYS reset to decimal temporarily */ | |
586e589c FN |
811 | if (!gdb_parse_exp_1 (&s, 0, 0, &exp)) |
812 | /* We cannot proceed without a well-formed expression. */ | |
813 | return 0; | |
8b93c638 JM |
814 | if (!gdb_evaluate_expression (exp, &value)) |
815 | { | |
816 | /* We cannot proceed without a valid expression. */ | |
8038e1e2 | 817 | xfree (exp); |
8b93c638 JM |
818 | return 0; |
819 | } | |
820 | ||
fb9b6b35 JJ |
821 | if (!my_value_equal (var->value, value, &error)) |
822 | var->updated = 1; | |
575bbeb6 | 823 | if (!gdb_value_assign (var->value, value, &val)) |
8a1a0112 | 824 | return 0; |
8b93c638 JM |
825 | value_free (var->value); |
826 | release_value (val); | |
827 | var->value = val; | |
828 | input_radix = saved_input_radix; | |
829 | return 1; | |
830 | } | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | /* Returns a malloc'ed list with all root variable objects */ | |
836 | int | |
837 | varobj_list (struct varobj ***varlist) | |
838 | { | |
839 | struct varobj **cv; | |
840 | struct varobj_root *croot; | |
841 | int mycount = rootcount; | |
842 | ||
843 | /* Alloc (rootcount + 1) entries for the result */ | |
844 | *varlist = xmalloc ((rootcount + 1) * sizeof (struct varobj *)); | |
845 | ||
846 | cv = *varlist; | |
847 | croot = rootlist; | |
848 | while ((croot != NULL) && (mycount > 0)) | |
849 | { | |
850 | *cv = croot->rootvar; | |
851 | mycount--; | |
852 | cv++; | |
853 | croot = croot->next; | |
854 | } | |
855 | /* Mark the end of the list */ | |
856 | *cv = NULL; | |
857 | ||
858 | if (mycount || (croot != NULL)) | |
72330bd6 AC |
859 | warning |
860 | ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)", | |
861 | rootcount, mycount); | |
8b93c638 JM |
862 | |
863 | return rootcount; | |
864 | } | |
865 | ||
866 | /* Update the values for a variable and its children. This is a | |
867 | two-pronged attack. First, re-parse the value for the root's | |
868 | expression to see if it's changed. Then go all the way | |
869 | through its children, reconstructing them and noting if they've | |
870 | changed. | |
73a93a32 JI |
871 | Return value: |
872 | -1 if there was an error updating the varobj | |
873 | -2 if the type changed | |
874 | Otherwise it is the number of children + parent changed | |
8b93c638 | 875 | |
705da579 KS |
876 | Only root variables can be updated... |
877 | ||
878 | NOTE: This function may delete the caller's varobj. If it | |
879 | returns -2, then it has done this and VARP will be modified | |
880 | to point to the new varobj. */ | |
8b93c638 JM |
881 | |
882 | int | |
705da579 | 883 | varobj_update (struct varobj **varp, struct varobj ***changelist) |
8b93c638 JM |
884 | { |
885 | int changed = 0; | |
a6c442d8 | 886 | int error = 0; |
73a93a32 | 887 | int type_changed; |
8b93c638 JM |
888 | int i; |
889 | int vleft; | |
8b93c638 JM |
890 | struct varobj *v; |
891 | struct varobj **cv; | |
2c67cb8b | 892 | struct varobj **templist = NULL; |
30b28db1 | 893 | struct value *new; |
8b93c638 JM |
894 | struct vstack *stack = NULL; |
895 | struct vstack *result = NULL; | |
e64d9b3d MH |
896 | struct frame_id old_fid; |
897 | struct frame_info *fi; | |
8b93c638 JM |
898 | |
899 | /* sanity check: have we been passed a pointer? */ | |
900 | if (changelist == NULL) | |
901 | return -1; | |
902 | ||
903 | /* Only root variables can be updated... */ | |
705da579 | 904 | if ((*varp)->root->rootvar != *varp) |
8b93c638 JM |
905 | /* Not a root var */ |
906 | return -1; | |
907 | ||
908 | /* Save the selected stack frame, since we will need to change it | |
909 | in order to evaluate expressions. */ | |
7a424e99 | 910 | old_fid = get_frame_id (deprecated_selected_frame); |
8b93c638 JM |
911 | |
912 | /* Update the root variable. value_of_root can return NULL | |
913 | if the variable is no longer around, i.e. we stepped out of | |
73a93a32 JI |
914 | the frame in which a local existed. We are letting the |
915 | value_of_root variable dispose of the varobj if the type | |
916 | has changed. */ | |
917 | type_changed = 1; | |
705da579 | 918 | new = value_of_root (varp, &type_changed); |
8b93c638 | 919 | if (new == NULL) |
73a93a32 | 920 | { |
705da579 | 921 | (*varp)->error = 1; |
73a93a32 JI |
922 | return -1; |
923 | } | |
8b93c638 JM |
924 | |
925 | /* Initialize a stack for temporary results */ | |
926 | vpush (&result, NULL); | |
927 | ||
ae093f96 FN |
928 | /* If this is a "use_selected_frame" varobj, and its type has changed, |
929 | them note that it's changed. */ | |
930 | if (type_changed) | |
8b93c638 | 931 | { |
705da579 | 932 | vpush (&result, *varp); |
ae093f96 FN |
933 | changed++; |
934 | } | |
935 | /* If values are not equal, note that it's changed. | |
936 | There a couple of exceptions here, though. | |
937 | We don't want some types to be reported as "changed". */ | |
fb9b6b35 | 938 | else if (type_changeable (*varp) && |
a6c442d8 | 939 | ((*varp)->updated || !my_value_equal ((*varp)->value, new, &error))) |
ae093f96 | 940 | { |
705da579 | 941 | vpush (&result, *varp); |
fb9b6b35 | 942 | (*varp)->updated = 0; |
ae093f96 | 943 | changed++; |
a6c442d8 MK |
944 | /* Its value is going to be updated to NEW. */ |
945 | (*varp)->error = error; | |
8b93c638 | 946 | } |
8b93c638 JM |
947 | |
948 | /* We must always keep around the new value for this root | |
949 | variable expression, or we lose the updated children! */ | |
705da579 KS |
950 | value_free ((*varp)->value); |
951 | (*varp)->value = new; | |
8b93c638 JM |
952 | |
953 | /* Initialize a stack */ | |
954 | vpush (&stack, NULL); | |
955 | ||
956 | /* Push the root's children */ | |
705da579 | 957 | if ((*varp)->children != NULL) |
8b93c638 JM |
958 | { |
959 | struct varobj_child *c; | |
705da579 | 960 | for (c = (*varp)->children; c != NULL; c = c->next) |
8b93c638 JM |
961 | vpush (&stack, c->child); |
962 | } | |
963 | ||
964 | /* Walk through the children, reconstructing them all. */ | |
965 | v = vpop (&stack); | |
966 | while (v != NULL) | |
967 | { | |
968 | /* Push any children */ | |
969 | if (v->children != NULL) | |
970 | { | |
971 | struct varobj_child *c; | |
972 | for (c = v->children; c != NULL; c = c->next) | |
973 | vpush (&stack, c->child); | |
974 | } | |
975 | ||
976 | /* Update this variable */ | |
977 | new = value_of_child (v->parent, v->index); | |
fb9b6b35 | 978 | if (type_changeable (v) && |
a6c442d8 | 979 | (v->updated || !my_value_equal (v->value, new, &error))) |
8b93c638 JM |
980 | { |
981 | /* Note that it's changed */ | |
982 | vpush (&result, v); | |
fb9b6b35 | 983 | v->updated = 0; |
8b93c638 JM |
984 | changed++; |
985 | } | |
a6c442d8 MK |
986 | /* Its value is going to be updated to NEW. */ |
987 | v->error = error; | |
8b93c638 JM |
988 | |
989 | /* We must always keep new values, since children depend on it. */ | |
990 | if (v->value != NULL) | |
991 | value_free (v->value); | |
992 | v->value = new; | |
993 | ||
994 | /* Get next child */ | |
995 | v = vpop (&stack); | |
996 | } | |
997 | ||
998 | /* Alloc (changed + 1) list entries */ | |
999 | /* FIXME: add a cleanup for the allocated list(s) | |
1000 | because one day the select_frame called below can longjump */ | |
1001 | *changelist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
1002 | if (changed > 1) | |
1003 | { | |
1004 | templist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
1005 | cv = templist; | |
1006 | } | |
1007 | else | |
1008 | cv = *changelist; | |
1009 | ||
1010 | /* Copy from result stack to list */ | |
1011 | vleft = changed; | |
1012 | *cv = vpop (&result); | |
1013 | while ((*cv != NULL) && (vleft > 0)) | |
1014 | { | |
1015 | vleft--; | |
1016 | cv++; | |
1017 | *cv = vpop (&result); | |
1018 | } | |
1019 | if (vleft) | |
8a3fe4f8 | 1020 | warning (_("varobj_update: assertion failed - vleft <> 0")); |
8b93c638 JM |
1021 | |
1022 | if (changed > 1) | |
1023 | { | |
1024 | /* Now we revert the order. */ | |
72330bd6 AC |
1025 | for (i = 0; i < changed; i++) |
1026 | *(*changelist + i) = *(templist + changed - 1 - i); | |
8b93c638 JM |
1027 | *(*changelist + changed) = NULL; |
1028 | } | |
1029 | ||
1030 | /* Restore selected frame */ | |
e64d9b3d MH |
1031 | fi = frame_find_by_id (old_fid); |
1032 | if (fi) | |
1033 | select_frame (fi); | |
8b93c638 | 1034 | |
73a93a32 JI |
1035 | if (type_changed) |
1036 | return -2; | |
1037 | else | |
1038 | return changed; | |
8b93c638 JM |
1039 | } |
1040 | \f | |
1041 | ||
1042 | /* Helper functions */ | |
1043 | ||
1044 | /* | |
1045 | * Variable object construction/destruction | |
1046 | */ | |
1047 | ||
1048 | static int | |
fba45db2 KB |
1049 | delete_variable (struct cpstack **resultp, struct varobj *var, |
1050 | int only_children_p) | |
8b93c638 JM |
1051 | { |
1052 | int delcount = 0; | |
1053 | ||
1054 | delete_variable_1 (resultp, &delcount, var, | |
1055 | only_children_p, 1 /* remove_from_parent_p */ ); | |
1056 | ||
1057 | return delcount; | |
1058 | } | |
1059 | ||
1060 | /* Delete the variable object VAR and its children */ | |
1061 | /* IMPORTANT NOTE: If we delete a variable which is a child | |
1062 | and the parent is not removed we dump core. It must be always | |
1063 | initially called with remove_from_parent_p set */ | |
1064 | static void | |
72330bd6 AC |
1065 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
1066 | struct varobj *var, int only_children_p, | |
1067 | int remove_from_parent_p) | |
8b93c638 JM |
1068 | { |
1069 | struct varobj_child *vc; | |
1070 | struct varobj_child *next; | |
1071 | ||
1072 | /* Delete any children of this variable, too. */ | |
1073 | for (vc = var->children; vc != NULL; vc = next) | |
1074 | { | |
1075 | if (!remove_from_parent_p) | |
1076 | vc->child->parent = NULL; | |
1077 | delete_variable_1 (resultp, delcountp, vc->child, 0, only_children_p); | |
1078 | next = vc->next; | |
b8c9b27d | 1079 | xfree (vc); |
8b93c638 JM |
1080 | } |
1081 | ||
1082 | /* if we were called to delete only the children we are done here */ | |
1083 | if (only_children_p) | |
1084 | return; | |
1085 | ||
1086 | /* Otherwise, add it to the list of deleted ones and proceed to do so */ | |
73a93a32 JI |
1087 | /* If the name is null, this is a temporary variable, that has not |
1088 | yet been installed, don't report it, it belongs to the caller... */ | |
1089 | if (var->obj_name != NULL) | |
8b93c638 | 1090 | { |
5b616ba1 | 1091 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
1092 | *delcountp = *delcountp + 1; |
1093 | } | |
1094 | ||
1095 | /* If this variable has a parent, remove it from its parent's list */ | |
1096 | /* OPTIMIZATION: if the parent of this variable is also being deleted, | |
1097 | (as indicated by remove_from_parent_p) we don't bother doing an | |
1098 | expensive list search to find the element to remove when we are | |
1099 | discarding the list afterwards */ | |
72330bd6 | 1100 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 JM |
1101 | { |
1102 | remove_child_from_parent (var->parent, var); | |
1103 | } | |
72330bd6 | 1104 | |
73a93a32 JI |
1105 | if (var->obj_name != NULL) |
1106 | uninstall_variable (var); | |
8b93c638 JM |
1107 | |
1108 | /* Free memory associated with this variable */ | |
1109 | free_variable (var); | |
1110 | } | |
1111 | ||
1112 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ | |
1113 | static int | |
fba45db2 | 1114 | install_variable (struct varobj *var) |
8b93c638 JM |
1115 | { |
1116 | struct vlist *cv; | |
1117 | struct vlist *newvl; | |
1118 | const char *chp; | |
1119 | unsigned int index = 0; | |
1120 | unsigned int i = 1; | |
1121 | ||
1122 | for (chp = var->obj_name; *chp; chp++) | |
1123 | { | |
1124 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1125 | } | |
1126 | ||
1127 | cv = *(varobj_table + index); | |
1128 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1129 | cv = cv->next; | |
1130 | ||
1131 | if (cv != NULL) | |
8a3fe4f8 | 1132 | error (_("Duplicate variable object name")); |
8b93c638 JM |
1133 | |
1134 | /* Add varobj to hash table */ | |
1135 | newvl = xmalloc (sizeof (struct vlist)); | |
1136 | newvl->next = *(varobj_table + index); | |
1137 | newvl->var = var; | |
1138 | *(varobj_table + index) = newvl; | |
1139 | ||
1140 | /* If root, add varobj to root list */ | |
1141 | if (var->root->rootvar == var) | |
1142 | { | |
1143 | /* Add to list of root variables */ | |
1144 | if (rootlist == NULL) | |
1145 | var->root->next = NULL; | |
1146 | else | |
1147 | var->root->next = rootlist; | |
1148 | rootlist = var->root; | |
1149 | rootcount++; | |
1150 | } | |
1151 | ||
1152 | return 1; /* OK */ | |
1153 | } | |
1154 | ||
1155 | /* Unistall the object VAR. */ | |
1156 | static void | |
fba45db2 | 1157 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
1158 | { |
1159 | struct vlist *cv; | |
1160 | struct vlist *prev; | |
1161 | struct varobj_root *cr; | |
1162 | struct varobj_root *prer; | |
1163 | const char *chp; | |
1164 | unsigned int index = 0; | |
1165 | unsigned int i = 1; | |
1166 | ||
1167 | /* Remove varobj from hash table */ | |
1168 | for (chp = var->obj_name; *chp; chp++) | |
1169 | { | |
1170 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1171 | } | |
1172 | ||
1173 | cv = *(varobj_table + index); | |
1174 | prev = NULL; | |
1175 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1176 | { | |
1177 | prev = cv; | |
1178 | cv = cv->next; | |
1179 | } | |
1180 | ||
1181 | if (varobjdebug) | |
1182 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
1183 | ||
1184 | if (cv == NULL) | |
1185 | { | |
72330bd6 AC |
1186 | warning |
1187 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
1188 | var->obj_name); | |
8b93c638 JM |
1189 | return; |
1190 | } | |
1191 | ||
1192 | if (prev == NULL) | |
1193 | *(varobj_table + index) = cv->next; | |
1194 | else | |
1195 | prev->next = cv->next; | |
1196 | ||
b8c9b27d | 1197 | xfree (cv); |
8b93c638 JM |
1198 | |
1199 | /* If root, remove varobj from root list */ | |
1200 | if (var->root->rootvar == var) | |
1201 | { | |
1202 | /* Remove from list of root variables */ | |
1203 | if (rootlist == var->root) | |
1204 | rootlist = var->root->next; | |
1205 | else | |
1206 | { | |
1207 | prer = NULL; | |
1208 | cr = rootlist; | |
1209 | while ((cr != NULL) && (cr->rootvar != var)) | |
1210 | { | |
1211 | prer = cr; | |
1212 | cr = cr->next; | |
1213 | } | |
1214 | if (cr == NULL) | |
1215 | { | |
72330bd6 AC |
1216 | warning |
1217 | ("Assertion failed: Could not find varobj \"%s\" in root list", | |
1218 | var->obj_name); | |
8b93c638 JM |
1219 | return; |
1220 | } | |
1221 | if (prer == NULL) | |
1222 | rootlist = NULL; | |
1223 | else | |
1224 | prer->next = cr->next; | |
1225 | } | |
1226 | rootcount--; | |
1227 | } | |
1228 | ||
1229 | } | |
1230 | ||
1231 | /* Does a child with the name NAME exist in VAR? If so, return its data. | |
1232 | If not, return NULL. */ | |
1233 | static struct varobj * | |
1669605f | 1234 | child_exists (struct varobj *var, char *name) |
8b93c638 JM |
1235 | { |
1236 | struct varobj_child *vc; | |
1237 | ||
1238 | for (vc = var->children; vc != NULL; vc = vc->next) | |
1239 | { | |
6e382aa3 | 1240 | if (strcmp (vc->child->name, name) == 0) |
8b93c638 JM |
1241 | return vc->child; |
1242 | } | |
1243 | ||
1244 | return NULL; | |
1245 | } | |
1246 | ||
1247 | /* Create and install a child of the parent of the given name */ | |
1248 | static struct varobj * | |
fba45db2 | 1249 | create_child (struct varobj *parent, int index, char *name) |
8b93c638 JM |
1250 | { |
1251 | struct varobj *child; | |
1252 | char *childs_name; | |
1253 | ||
1254 | child = new_variable (); | |
1255 | ||
1256 | /* name is allocated by name_of_child */ | |
1257 | child->name = name; | |
1258 | child->index = index; | |
1259 | child->value = value_of_child (parent, index); | |
7f19b9a2 | 1260 | if ((!CPLUS_FAKE_CHILD (child) && child->value == NULL) || parent->error) |
8b93c638 JM |
1261 | child->error = 1; |
1262 | child->parent = parent; | |
1263 | child->root = parent->root; | |
b435e160 | 1264 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); |
8b93c638 JM |
1265 | child->obj_name = childs_name; |
1266 | install_variable (child); | |
1267 | ||
1268 | /* Save a pointer to this child in the parent */ | |
1269 | save_child_in_parent (parent, child); | |
1270 | ||
1271 | /* Note the type of this child */ | |
1272 | child->type = type_of_child (child); | |
1273 | ||
1274 | return child; | |
1275 | } | |
1276 | ||
1277 | /* FIXME: This should be a generic add to list */ | |
1278 | /* Save CHILD in the PARENT's data. */ | |
1279 | static void | |
fba45db2 | 1280 | save_child_in_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1281 | { |
1282 | struct varobj_child *vc; | |
1283 | ||
1284 | /* Insert the child at the top */ | |
1285 | vc = parent->children; | |
1286 | parent->children = | |
1287 | (struct varobj_child *) xmalloc (sizeof (struct varobj_child)); | |
1288 | ||
1289 | parent->children->next = vc; | |
1290 | parent->children->child = child; | |
1291 | } | |
1292 | ||
1293 | /* FIXME: This should be a generic remove from list */ | |
1294 | /* Remove the CHILD from the PARENT's list of children. */ | |
1295 | static void | |
fba45db2 | 1296 | remove_child_from_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1297 | { |
1298 | struct varobj_child *vc, *prev; | |
1299 | ||
1300 | /* Find the child in the parent's list */ | |
1301 | prev = NULL; | |
1302 | for (vc = parent->children; vc != NULL;) | |
1303 | { | |
1304 | if (vc->child == child) | |
1305 | break; | |
1306 | prev = vc; | |
1307 | vc = vc->next; | |
1308 | } | |
1309 | ||
1310 | if (prev == NULL) | |
1311 | parent->children = vc->next; | |
1312 | else | |
1313 | prev->next = vc->next; | |
1314 | ||
1315 | } | |
1316 | \f | |
1317 | ||
1318 | /* | |
1319 | * Miscellaneous utility functions. | |
1320 | */ | |
1321 | ||
1322 | /* Allocate memory and initialize a new variable */ | |
1323 | static struct varobj * | |
1324 | new_variable (void) | |
1325 | { | |
1326 | struct varobj *var; | |
1327 | ||
1328 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
1329 | var->name = NULL; | |
1330 | var->obj_name = NULL; | |
1331 | var->index = -1; | |
1332 | var->type = NULL; | |
1333 | var->value = NULL; | |
1334 | var->error = 0; | |
1335 | var->num_children = -1; | |
1336 | var->parent = NULL; | |
1337 | var->children = NULL; | |
1338 | var->format = 0; | |
1339 | var->root = NULL; | |
fb9b6b35 | 1340 | var->updated = 0; |
8b93c638 JM |
1341 | |
1342 | return var; | |
1343 | } | |
1344 | ||
1345 | /* Allocate memory and initialize a new root variable */ | |
1346 | static struct varobj * | |
1347 | new_root_variable (void) | |
1348 | { | |
1349 | struct varobj *var = new_variable (); | |
1350 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));; | |
1351 | var->root->lang = NULL; | |
1352 | var->root->exp = NULL; | |
1353 | var->root->valid_block = NULL; | |
7a424e99 | 1354 | var->root->frame = null_frame_id; |
73a93a32 | 1355 | var->root->use_selected_frame = 0; |
8b93c638 JM |
1356 | var->root->rootvar = NULL; |
1357 | ||
1358 | return var; | |
1359 | } | |
1360 | ||
1361 | /* Free any allocated memory associated with VAR. */ | |
1362 | static void | |
fba45db2 | 1363 | free_variable (struct varobj *var) |
8b93c638 JM |
1364 | { |
1365 | /* Free the expression if this is a root variable. */ | |
1366 | if (var->root->rootvar == var) | |
1367 | { | |
1368 | free_current_contents ((char **) &var->root->exp); | |
8038e1e2 | 1369 | xfree (var->root); |
8b93c638 JM |
1370 | } |
1371 | ||
8038e1e2 AC |
1372 | xfree (var->name); |
1373 | xfree (var->obj_name); | |
1374 | xfree (var); | |
8b93c638 JM |
1375 | } |
1376 | ||
74b7792f AC |
1377 | static void |
1378 | do_free_variable_cleanup (void *var) | |
1379 | { | |
1380 | free_variable (var); | |
1381 | } | |
1382 | ||
1383 | static struct cleanup * | |
1384 | make_cleanup_free_variable (struct varobj *var) | |
1385 | { | |
1386 | return make_cleanup (do_free_variable_cleanup, var); | |
1387 | } | |
1388 | ||
6766a268 DJ |
1389 | /* This returns the type of the variable. It also skips past typedefs |
1390 | to return the real type of the variable. | |
94b66fa7 KS |
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_type (struct varobj *var) |
8b93c638 JM |
1396 | { |
1397 | struct type *type; | |
1398 | type = var->type; | |
1399 | ||
6766a268 DJ |
1400 | if (type != NULL) |
1401 | type = check_typedef (type); | |
8b93c638 JM |
1402 | |
1403 | return type; | |
1404 | } | |
1405 | ||
1406 | /* This returns the type of the variable, dereferencing pointers, too. */ | |
1407 | static struct type * | |
fba45db2 | 1408 | get_type_deref (struct varobj *var) |
8b93c638 JM |
1409 | { |
1410 | struct type *type; | |
1411 | ||
1412 | type = get_type (var); | |
1413 | ||
1414 | if (type != NULL && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1415 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1416 | type = get_target_type (type); | |
1417 | ||
1418 | return type; | |
1419 | } | |
1420 | ||
1421 | /* This returns the target type (or NULL) of TYPE, also skipping | |
94b66fa7 KS |
1422 | past typedefs, just like get_type (). |
1423 | ||
1424 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1425 | except within get_target_type and get_type. */ | |
8b93c638 | 1426 | static struct type * |
fba45db2 | 1427 | get_target_type (struct type *type) |
8b93c638 JM |
1428 | { |
1429 | if (type != NULL) | |
1430 | { | |
1431 | type = TYPE_TARGET_TYPE (type); | |
6766a268 DJ |
1432 | if (type != NULL) |
1433 | type = check_typedef (type); | |
8b93c638 JM |
1434 | } |
1435 | ||
1436 | return type; | |
1437 | } | |
1438 | ||
1439 | /* What is the default display for this variable? We assume that | |
1440 | everything is "natural". Any exceptions? */ | |
1441 | static enum varobj_display_formats | |
fba45db2 | 1442 | variable_default_display (struct varobj *var) |
8b93c638 JM |
1443 | { |
1444 | return FORMAT_NATURAL; | |
1445 | } | |
1446 | ||
a6c442d8 MK |
1447 | /* This function is similar to GDB's value_contents_equal, except that |
1448 | this one is "safe"; it never longjmps. It determines if the VAL1's | |
1449 | value is the same as VAL2. If for some reason the value of VAR2 | |
1450 | can't be established, *ERROR2 is set to non-zero. */ | |
1451 | ||
8b93c638 | 1452 | static int |
4dd04433 | 1453 | my_value_equal (struct value *val1, struct value *volatile val2, int *error2) |
8b93c638 | 1454 | { |
a6c442d8 | 1455 | volatile struct exception except; |
8b93c638 | 1456 | |
a6c442d8 | 1457 | /* As a special case, if both are null, we say they're equal. */ |
8b93c638 JM |
1458 | if (val1 == NULL && val2 == NULL) |
1459 | return 1; | |
1460 | else if (val1 == NULL || val2 == NULL) | |
1461 | return 0; | |
1462 | ||
a6c442d8 MK |
1463 | /* The contents of VAL1 are supposed to be known. */ |
1464 | gdb_assert (!value_lazy (val1)); | |
8b93c638 | 1465 | |
a6c442d8 MK |
1466 | /* Make sure we also know the contents of VAL2. */ |
1467 | val2 = coerce_array (val2); | |
1468 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
8b93c638 | 1469 | { |
a6c442d8 MK |
1470 | if (value_lazy (val2)) |
1471 | value_fetch_lazy (val2); | |
1472 | } | |
1473 | if (except.reason < 0) | |
1474 | { | |
1475 | *error2 = 1; | |
1476 | return 0; | |
8b93c638 | 1477 | } |
a6c442d8 | 1478 | gdb_assert (!value_lazy (val2)); |
8b93c638 | 1479 | |
a6c442d8 | 1480 | return value_contents_equal (val1, val2); |
8b93c638 JM |
1481 | } |
1482 | ||
1483 | /* FIXME: The following should be generic for any pointer */ | |
1484 | static void | |
fba45db2 | 1485 | vpush (struct vstack **pstack, struct varobj *var) |
8b93c638 JM |
1486 | { |
1487 | struct vstack *s; | |
1488 | ||
1489 | s = (struct vstack *) xmalloc (sizeof (struct vstack)); | |
1490 | s->var = var; | |
1491 | s->next = *pstack; | |
1492 | *pstack = s; | |
1493 | } | |
1494 | ||
1495 | /* FIXME: The following should be generic for any pointer */ | |
1496 | static struct varobj * | |
fba45db2 | 1497 | vpop (struct vstack **pstack) |
8b93c638 JM |
1498 | { |
1499 | struct vstack *s; | |
1500 | struct varobj *v; | |
1501 | ||
1502 | if ((*pstack)->var == NULL && (*pstack)->next == NULL) | |
1503 | return NULL; | |
1504 | ||
1505 | s = *pstack; | |
1506 | v = s->var; | |
1507 | *pstack = (*pstack)->next; | |
b8c9b27d | 1508 | xfree (s); |
8b93c638 JM |
1509 | |
1510 | return v; | |
1511 | } | |
1512 | ||
1513 | /* FIXME: The following should be generic for any pointer */ | |
1514 | static void | |
fba45db2 | 1515 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
1516 | { |
1517 | struct cpstack *s; | |
1518 | ||
1519 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
1520 | s->name = name; | |
1521 | s->next = *pstack; | |
1522 | *pstack = s; | |
1523 | } | |
1524 | ||
1525 | /* FIXME: The following should be generic for any pointer */ | |
1526 | static char * | |
fba45db2 | 1527 | cppop (struct cpstack **pstack) |
8b93c638 JM |
1528 | { |
1529 | struct cpstack *s; | |
1530 | char *v; | |
1531 | ||
1532 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
1533 | return NULL; | |
1534 | ||
1535 | s = *pstack; | |
1536 | v = s->name; | |
1537 | *pstack = (*pstack)->next; | |
b8c9b27d | 1538 | xfree (s); |
8b93c638 JM |
1539 | |
1540 | return v; | |
1541 | } | |
1542 | \f | |
1543 | /* | |
1544 | * Language-dependencies | |
1545 | */ | |
1546 | ||
1547 | /* Common entry points */ | |
1548 | ||
1549 | /* Get the language of variable VAR. */ | |
1550 | static enum varobj_languages | |
fba45db2 | 1551 | variable_language (struct varobj *var) |
8b93c638 JM |
1552 | { |
1553 | enum varobj_languages lang; | |
1554 | ||
1555 | switch (var->root->exp->language_defn->la_language) | |
1556 | { | |
1557 | default: | |
1558 | case language_c: | |
1559 | lang = vlang_c; | |
1560 | break; | |
1561 | case language_cplus: | |
1562 | lang = vlang_cplus; | |
1563 | break; | |
1564 | case language_java: | |
1565 | lang = vlang_java; | |
1566 | break; | |
1567 | } | |
1568 | ||
1569 | return lang; | |
1570 | } | |
1571 | ||
1572 | /* Return the number of children for a given variable. | |
1573 | The result of this function is defined by the language | |
1574 | implementation. The number of children returned by this function | |
1575 | is the number of children that the user will see in the variable | |
1576 | display. */ | |
1577 | static int | |
fba45db2 | 1578 | number_of_children (struct varobj *var) |
8b93c638 JM |
1579 | { |
1580 | return (*var->root->lang->number_of_children) (var);; | |
1581 | } | |
1582 | ||
1583 | /* What is the expression for the root varobj VAR? Returns a malloc'd string. */ | |
1584 | static char * | |
fba45db2 | 1585 | name_of_variable (struct varobj *var) |
8b93c638 JM |
1586 | { |
1587 | return (*var->root->lang->name_of_variable) (var); | |
1588 | } | |
1589 | ||
1590 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */ | |
1591 | static char * | |
fba45db2 | 1592 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
1593 | { |
1594 | return (*var->root->lang->name_of_child) (var, index); | |
1595 | } | |
1596 | ||
30b28db1 | 1597 | /* What is the ``struct value *'' of the root variable VAR? |
73a93a32 JI |
1598 | TYPE_CHANGED controls what to do if the type of a |
1599 | use_selected_frame = 1 variable changes. On input, | |
1600 | TYPE_CHANGED = 1 means discard the old varobj, and replace | |
1601 | it with this one. TYPE_CHANGED = 0 means leave it around. | |
1602 | NB: In both cases, var_handle will point to the new varobj, | |
1603 | so if you use TYPE_CHANGED = 0, you will have to stash the | |
1604 | old varobj pointer away somewhere before calling this. | |
1605 | On return, TYPE_CHANGED will be 1 if the type has changed, and | |
1606 | 0 otherwise. */ | |
30b28db1 | 1607 | static struct value * |
fba45db2 | 1608 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 1609 | { |
73a93a32 JI |
1610 | struct varobj *var; |
1611 | ||
1612 | if (var_handle == NULL) | |
1613 | return NULL; | |
1614 | ||
1615 | var = *var_handle; | |
1616 | ||
1617 | /* This should really be an exception, since this should | |
1618 | only get called with a root variable. */ | |
1619 | ||
1620 | if (var->root->rootvar != var) | |
1621 | return NULL; | |
1622 | ||
1623 | if (var->root->use_selected_frame) | |
1624 | { | |
1625 | struct varobj *tmp_var; | |
1626 | char *old_type, *new_type; | |
1627 | old_type = varobj_get_type (var); | |
1628 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
1629 | USE_SELECTED_FRAME); | |
1630 | if (tmp_var == NULL) | |
1631 | { | |
1632 | return NULL; | |
1633 | } | |
1634 | new_type = varobj_get_type (tmp_var); | |
72330bd6 | 1635 | if (strcmp (old_type, new_type) == 0) |
73a93a32 JI |
1636 | { |
1637 | varobj_delete (tmp_var, NULL, 0); | |
1638 | *type_changed = 0; | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | if (*type_changed) | |
1643 | { | |
72330bd6 | 1644 | tmp_var->obj_name = |
73a93a32 | 1645 | savestring (var->obj_name, strlen (var->obj_name)); |
f7635dd9 | 1646 | varobj_delete (var, NULL, 0); |
73a93a32 JI |
1647 | } |
1648 | else | |
1649 | { | |
72330bd6 | 1650 | tmp_var->obj_name = varobj_gen_name (); |
73a93a32 JI |
1651 | } |
1652 | install_variable (tmp_var); | |
1653 | *var_handle = tmp_var; | |
705da579 | 1654 | var = *var_handle; |
73a93a32 JI |
1655 | *type_changed = 1; |
1656 | } | |
1657 | } | |
1658 | else | |
1659 | { | |
1660 | *type_changed = 0; | |
1661 | } | |
1662 | ||
1663 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
1664 | } |
1665 | ||
30b28db1 AC |
1666 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
1667 | static struct value * | |
fba45db2 | 1668 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 1669 | { |
30b28db1 | 1670 | struct value *value; |
8b93c638 JM |
1671 | |
1672 | value = (*parent->root->lang->value_of_child) (parent, index); | |
1673 | ||
1674 | /* If we're being lazy, fetch the real value of the variable. */ | |
d69fe07e | 1675 | if (value != NULL && value_lazy (value)) |
575bbeb6 KS |
1676 | { |
1677 | /* If we fail to fetch the value of the child, return | |
7f19b9a2 AC |
1678 | NULL so that callers notice that we're leaving an |
1679 | error message. */ | |
575bbeb6 KS |
1680 | if (!gdb_value_fetch_lazy (value)) |
1681 | value = NULL; | |
1682 | } | |
8b93c638 JM |
1683 | |
1684 | return value; | |
1685 | } | |
1686 | ||
1687 | /* What is the type of VAR? */ | |
1688 | static struct type * | |
fba45db2 | 1689 | type_of_child (struct varobj *var) |
8b93c638 JM |
1690 | { |
1691 | ||
1692 | /* If the child had no evaluation errors, var->value | |
1693 | will be non-NULL and contain a valid type. */ | |
1694 | if (var->value != NULL) | |
df407dfe | 1695 | return value_type (var->value); |
8b93c638 JM |
1696 | |
1697 | /* Otherwise, we must compute the type. */ | |
1698 | return (*var->root->lang->type_of_child) (var->parent, var->index); | |
1699 | } | |
1700 | ||
1701 | /* Is this variable editable? Use the variable's type to make | |
1702 | this determination. */ | |
1703 | static int | |
fba45db2 | 1704 | variable_editable (struct varobj *var) |
8b93c638 JM |
1705 | { |
1706 | return (*var->root->lang->variable_editable) (var); | |
1707 | } | |
1708 | ||
1709 | /* GDB already has a command called "value_of_variable". Sigh. */ | |
1710 | static char * | |
fba45db2 | 1711 | my_value_of_variable (struct varobj *var) |
8b93c638 JM |
1712 | { |
1713 | return (*var->root->lang->value_of_variable) (var); | |
1714 | } | |
1715 | ||
1716 | /* Is VAR something that can change? Depending on language, | |
1717 | some variable's values never change. For example, | |
1718 | struct and unions never change values. */ | |
1719 | static int | |
fba45db2 | 1720 | type_changeable (struct varobj *var) |
8b93c638 JM |
1721 | { |
1722 | int r; | |
1723 | struct type *type; | |
1724 | ||
1725 | if (CPLUS_FAKE_CHILD (var)) | |
1726 | return 0; | |
1727 | ||
1728 | type = get_type (var); | |
1729 | ||
1730 | switch (TYPE_CODE (type)) | |
1731 | { | |
72330bd6 AC |
1732 | case TYPE_CODE_STRUCT: |
1733 | case TYPE_CODE_UNION: | |
1734 | case TYPE_CODE_ARRAY: | |
1735 | r = 0; | |
1736 | break; | |
8b93c638 | 1737 | |
72330bd6 AC |
1738 | default: |
1739 | r = 1; | |
8b93c638 JM |
1740 | } |
1741 | ||
1742 | return r; | |
1743 | } | |
1744 | ||
1745 | /* C */ | |
1746 | static int | |
fba45db2 | 1747 | c_number_of_children (struct varobj *var) |
8b93c638 JM |
1748 | { |
1749 | struct type *type; | |
1750 | struct type *target; | |
1751 | int children; | |
1752 | ||
1753 | type = get_type (var); | |
1754 | target = get_target_type (type); | |
1755 | children = 0; | |
1756 | ||
1757 | switch (TYPE_CODE (type)) | |
1758 | { | |
1759 | case TYPE_CODE_ARRAY: | |
1760 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
72330bd6 | 1761 | && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED) |
8b93c638 JM |
1762 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
1763 | else | |
1764 | children = -1; | |
1765 | break; | |
1766 | ||
1767 | case TYPE_CODE_STRUCT: | |
1768 | case TYPE_CODE_UNION: | |
1769 | children = TYPE_NFIELDS (type); | |
1770 | break; | |
1771 | ||
1772 | case TYPE_CODE_PTR: | |
1773 | /* This is where things get compilcated. All pointers have one child. | |
1774 | Except, of course, for struct and union ptr, which we automagically | |
0755e6c1 FN |
1775 | dereference for the user and function ptrs, which have no children. |
1776 | We also don't dereference void* as we don't know what to show. | |
1777 | We can show char* so we allow it to be dereferenced. If you decide | |
1778 | to test for it, please mind that a little magic is necessary to | |
1779 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
1780 | TYPE_NAME == "char" */ | |
1781 | ||
8b93c638 JM |
1782 | switch (TYPE_CODE (target)) |
1783 | { | |
1784 | case TYPE_CODE_STRUCT: | |
1785 | case TYPE_CODE_UNION: | |
1786 | children = TYPE_NFIELDS (target); | |
1787 | break; | |
1788 | ||
1789 | case TYPE_CODE_FUNC: | |
0755e6c1 | 1790 | case TYPE_CODE_VOID: |
8b93c638 JM |
1791 | children = 0; |
1792 | break; | |
1793 | ||
1794 | default: | |
0755e6c1 | 1795 | children = 1; |
8b93c638 JM |
1796 | } |
1797 | break; | |
1798 | ||
1799 | default: | |
1800 | /* Other types have no children */ | |
1801 | break; | |
1802 | } | |
1803 | ||
1804 | return children; | |
1805 | } | |
1806 | ||
1807 | static char * | |
fba45db2 | 1808 | c_name_of_variable (struct varobj *parent) |
8b93c638 JM |
1809 | { |
1810 | return savestring (parent->name, strlen (parent->name)); | |
1811 | } | |
1812 | ||
1813 | static char * | |
fba45db2 | 1814 | c_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1815 | { |
1816 | struct type *type; | |
1817 | struct type *target; | |
1818 | char *name; | |
1819 | char *string; | |
1820 | ||
1821 | type = get_type (parent); | |
1822 | target = get_target_type (type); | |
1823 | ||
1824 | switch (TYPE_CODE (type)) | |
1825 | { | |
1826 | case TYPE_CODE_ARRAY: | |
b435e160 | 1827 | name = xstrprintf ("%d", index); |
8b93c638 JM |
1828 | break; |
1829 | ||
1830 | case TYPE_CODE_STRUCT: | |
1831 | case TYPE_CODE_UNION: | |
1832 | string = TYPE_FIELD_NAME (type, index); | |
1833 | name = savestring (string, strlen (string)); | |
1834 | break; | |
1835 | ||
1836 | case TYPE_CODE_PTR: | |
1837 | switch (TYPE_CODE (target)) | |
1838 | { | |
1839 | case TYPE_CODE_STRUCT: | |
1840 | case TYPE_CODE_UNION: | |
1841 | string = TYPE_FIELD_NAME (target, index); | |
1842 | name = savestring (string, strlen (string)); | |
1843 | break; | |
1844 | ||
1845 | default: | |
b435e160 | 1846 | name = xstrprintf ("*%s", parent->name); |
8b93c638 JM |
1847 | break; |
1848 | } | |
1849 | break; | |
1850 | ||
1851 | default: | |
1852 | /* This should not happen */ | |
1853 | name = xstrdup ("???"); | |
1854 | } | |
1855 | ||
1856 | return name; | |
1857 | } | |
1858 | ||
30b28db1 | 1859 | static struct value * |
fba45db2 | 1860 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 1861 | { |
30b28db1 | 1862 | struct value *new_val; |
73a93a32 | 1863 | struct varobj *var = *var_handle; |
8b93c638 JM |
1864 | struct frame_info *fi; |
1865 | int within_scope; | |
1866 | ||
73a93a32 JI |
1867 | /* Only root variables can be updated... */ |
1868 | if (var->root->rootvar != var) | |
1869 | /* Not a root var */ | |
1870 | return NULL; | |
1871 | ||
72330bd6 | 1872 | |
8b93c638 JM |
1873 | /* Determine whether the variable is still around. */ |
1874 | if (var->root->valid_block == NULL) | |
1875 | within_scope = 1; | |
1876 | else | |
1877 | { | |
1878 | reinit_frame_cache (); | |
e64d9b3d | 1879 | fi = frame_find_by_id (var->root->frame); |
8b93c638 JM |
1880 | within_scope = fi != NULL; |
1881 | /* FIXME: select_frame could fail */ | |
1882 | if (within_scope) | |
0f7d239c | 1883 | select_frame (fi); |
8b93c638 | 1884 | } |
72330bd6 | 1885 | |
8b93c638 JM |
1886 | if (within_scope) |
1887 | { | |
73a93a32 | 1888 | /* We need to catch errors here, because if evaluate |
72330bd6 AC |
1889 | expression fails we just want to make val->error = 1 and |
1890 | go on */ | |
8b93c638 JM |
1891 | if (gdb_evaluate_expression (var->root->exp, &new_val)) |
1892 | { | |
d69fe07e | 1893 | if (value_lazy (new_val)) |
8b93c638 | 1894 | { |
73a93a32 | 1895 | /* We need to catch errors because if |
72330bd6 AC |
1896 | value_fetch_lazy fails we still want to continue |
1897 | (after making val->error = 1) */ | |
0fd88904 AC |
1898 | /* FIXME: Shouldn't be using value_contents()? The |
1899 | comment on value_fetch_lazy() says it is only called | |
1900 | from the macro... */ | |
8b93c638 JM |
1901 | if (!gdb_value_fetch_lazy (new_val)) |
1902 | var->error = 1; | |
1903 | else | |
1904 | var->error = 0; | |
1905 | } | |
1906 | } | |
1907 | else | |
1908 | var->error = 1; | |
72330bd6 | 1909 | |
8b93c638 JM |
1910 | release_value (new_val); |
1911 | return new_val; | |
1912 | } | |
1913 | ||
1914 | return NULL; | |
1915 | } | |
1916 | ||
30b28db1 | 1917 | static struct value * |
fba45db2 | 1918 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 1919 | { |
30b28db1 AC |
1920 | struct value *value; |
1921 | struct value *temp; | |
1922 | struct value *indval; | |
8b93c638 JM |
1923 | struct type *type, *target; |
1924 | char *name; | |
1925 | ||
1926 | type = get_type (parent); | |
1927 | target = get_target_type (type); | |
1928 | name = name_of_child (parent, index); | |
1929 | temp = parent->value; | |
1930 | value = NULL; | |
1931 | ||
1932 | if (temp != NULL) | |
1933 | { | |
1934 | switch (TYPE_CODE (type)) | |
1935 | { | |
1936 | case TYPE_CODE_ARRAY: | |
8310b29b | 1937 | #if 0 |
72330bd6 | 1938 | /* This breaks if the array lives in a (vector) register. */ |
8b93c638 JM |
1939 | value = value_slice (temp, index, 1); |
1940 | temp = value_coerce_array (value); | |
1941 | gdb_value_ind (temp, &value); | |
8310b29b FN |
1942 | #else |
1943 | indval = value_from_longest (builtin_type_int, (LONGEST) index); | |
1944 | gdb_value_subscript (temp, indval, &value); | |
1945 | #endif | |
8b93c638 JM |
1946 | break; |
1947 | ||
1948 | case TYPE_CODE_STRUCT: | |
1949 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1950 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1951 | "vstructure"); | |
8b93c638 JM |
1952 | break; |
1953 | ||
1954 | case TYPE_CODE_PTR: | |
1955 | switch (TYPE_CODE (target)) | |
1956 | { | |
1957 | case TYPE_CODE_STRUCT: | |
1958 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1959 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1960 | "vstructure"); | |
8b93c638 JM |
1961 | break; |
1962 | ||
1963 | default: | |
1964 | gdb_value_ind (temp, &value); | |
1965 | break; | |
1966 | } | |
1967 | break; | |
1968 | ||
1969 | default: | |
1970 | break; | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | if (value != NULL) | |
1975 | release_value (value); | |
1976 | ||
5bbc1a8e | 1977 | xfree (name); |
8b93c638 JM |
1978 | return value; |
1979 | } | |
1980 | ||
1981 | static struct type * | |
fba45db2 | 1982 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1983 | { |
1984 | struct type *type; | |
1985 | char *name = name_of_child (parent, index); | |
1986 | ||
1987 | switch (TYPE_CODE (parent->type)) | |
1988 | { | |
1989 | case TYPE_CODE_ARRAY: | |
94b66fa7 | 1990 | type = get_target_type (parent->type); |
8b93c638 JM |
1991 | break; |
1992 | ||
1993 | case TYPE_CODE_STRUCT: | |
1994 | case TYPE_CODE_UNION: | |
1995 | type = lookup_struct_elt_type (parent->type, name, 0); | |
1996 | break; | |
1997 | ||
1998 | case TYPE_CODE_PTR: | |
94b66fa7 | 1999 | switch (TYPE_CODE (get_target_type (parent->type))) |
8b93c638 JM |
2000 | { |
2001 | case TYPE_CODE_STRUCT: | |
2002 | case TYPE_CODE_UNION: | |
2003 | type = lookup_struct_elt_type (parent->type, name, 0); | |
2004 | break; | |
2005 | ||
2006 | default: | |
94b66fa7 | 2007 | type = get_target_type (parent->type); |
8b93c638 JM |
2008 | break; |
2009 | } | |
2010 | break; | |
2011 | ||
2012 | default: | |
2013 | /* This should not happen as only the above types have children */ | |
8a3fe4f8 | 2014 | warning (_("Child of parent whose type does not allow children")); |
8b93c638 JM |
2015 | /* FIXME: Can we still go on? */ |
2016 | type = NULL; | |
2017 | break; | |
2018 | } | |
2019 | ||
5bbc1a8e | 2020 | xfree (name); |
8b93c638 JM |
2021 | return type; |
2022 | } | |
2023 | ||
2024 | static int | |
fba45db2 | 2025 | c_variable_editable (struct varobj *var) |
8b93c638 JM |
2026 | { |
2027 | switch (TYPE_CODE (get_type (var))) | |
2028 | { | |
2029 | case TYPE_CODE_STRUCT: | |
2030 | case TYPE_CODE_UNION: | |
2031 | case TYPE_CODE_ARRAY: | |
2032 | case TYPE_CODE_FUNC: | |
2033 | case TYPE_CODE_MEMBER: | |
2034 | case TYPE_CODE_METHOD: | |
2035 | return 0; | |
2036 | break; | |
2037 | ||
2038 | default: | |
2039 | return 1; | |
2040 | break; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | static char * | |
fba45db2 | 2045 | c_value_of_variable (struct varobj *var) |
8b93c638 | 2046 | { |
8b93c638 JM |
2047 | /* BOGUS: if val_print sees a struct/class, it will print out its |
2048 | children instead of "{...}" */ | |
e64d9b3d MH |
2049 | |
2050 | switch (TYPE_CODE (get_type (var))) | |
8b93c638 JM |
2051 | { |
2052 | case TYPE_CODE_STRUCT: | |
2053 | case TYPE_CODE_UNION: | |
2054 | return xstrdup ("{...}"); | |
2055 | /* break; */ | |
2056 | ||
2057 | case TYPE_CODE_ARRAY: | |
2058 | { | |
e64d9b3d | 2059 | char *number; |
b435e160 | 2060 | number = xstrprintf ("[%d]", var->num_children); |
e64d9b3d | 2061 | return (number); |
8b93c638 JM |
2062 | } |
2063 | /* break; */ | |
2064 | ||
2065 | default: | |
2066 | { | |
575bbeb6 KS |
2067 | if (var->value == NULL) |
2068 | { | |
2069 | /* This can happen if we attempt to get the value of a struct | |
2070 | member when the parent is an invalid pointer. This is an | |
2071 | error condition, so we should tell the caller. */ | |
2072 | return NULL; | |
2073 | } | |
2074 | else | |
2075 | { | |
e64d9b3d MH |
2076 | long dummy; |
2077 | struct ui_file *stb = mem_fileopen (); | |
2078 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
2079 | char *thevalue; | |
2080 | ||
d69fe07e | 2081 | if (value_lazy (var->value)) |
575bbeb6 | 2082 | gdb_value_fetch_lazy (var->value); |
806048c6 DJ |
2083 | common_val_print (var->value, stb, |
2084 | format_code[(int) var->format], 1, 0, 0); | |
575bbeb6 KS |
2085 | thevalue = ui_file_xstrdup (stb, &dummy); |
2086 | do_cleanups (old_chain); | |
8b93c638 JM |
2087 | return thevalue; |
2088 | } | |
e64d9b3d | 2089 | } |
8b93c638 JM |
2090 | } |
2091 | } | |
2092 | \f | |
2093 | ||
2094 | /* C++ */ | |
2095 | ||
2096 | static int | |
fba45db2 | 2097 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
2098 | { |
2099 | struct type *type; | |
2100 | int children, dont_know; | |
2101 | ||
2102 | dont_know = 1; | |
2103 | children = 0; | |
2104 | ||
2105 | if (!CPLUS_FAKE_CHILD (var)) | |
2106 | { | |
2107 | type = get_type_deref (var); | |
2108 | ||
2109 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 2110 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
2111 | { |
2112 | int kids[3]; | |
2113 | ||
2114 | cplus_class_num_children (type, kids); | |
2115 | if (kids[v_public] != 0) | |
2116 | children++; | |
2117 | if (kids[v_private] != 0) | |
2118 | children++; | |
2119 | if (kids[v_protected] != 0) | |
2120 | children++; | |
2121 | ||
2122 | /* Add any baseclasses */ | |
2123 | children += TYPE_N_BASECLASSES (type); | |
2124 | dont_know = 0; | |
2125 | ||
2126 | /* FIXME: save children in var */ | |
2127 | } | |
2128 | } | |
2129 | else | |
2130 | { | |
2131 | int kids[3]; | |
2132 | ||
2133 | type = get_type_deref (var->parent); | |
2134 | ||
2135 | cplus_class_num_children (type, kids); | |
6e382aa3 | 2136 | if (strcmp (var->name, "public") == 0) |
8b93c638 | 2137 | children = kids[v_public]; |
6e382aa3 | 2138 | else if (strcmp (var->name, "private") == 0) |
8b93c638 JM |
2139 | children = kids[v_private]; |
2140 | else | |
2141 | children = kids[v_protected]; | |
2142 | dont_know = 0; | |
2143 | } | |
2144 | ||
2145 | if (dont_know) | |
2146 | children = c_number_of_children (var); | |
2147 | ||
2148 | return children; | |
2149 | } | |
2150 | ||
2151 | /* Compute # of public, private, and protected variables in this class. | |
2152 | That means we need to descend into all baseclasses and find out | |
2153 | how many are there, too. */ | |
2154 | static void | |
1669605f | 2155 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 JM |
2156 | { |
2157 | int i; | |
2158 | ||
2159 | children[v_public] = 0; | |
2160 | children[v_private] = 0; | |
2161 | children[v_protected] = 0; | |
2162 | ||
2163 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) | |
2164 | { | |
2165 | /* If we have a virtual table pointer, omit it. */ | |
72330bd6 | 2166 | if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i) |
8b93c638 JM |
2167 | continue; |
2168 | ||
2169 | if (TYPE_FIELD_PROTECTED (type, i)) | |
2170 | children[v_protected]++; | |
2171 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
2172 | children[v_private]++; | |
2173 | else | |
2174 | children[v_public]++; | |
2175 | } | |
2176 | } | |
2177 | ||
2178 | static char * | |
fba45db2 | 2179 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2180 | { |
2181 | return c_name_of_variable (parent); | |
2182 | } | |
2183 | ||
2184 | static char * | |
fba45db2 | 2185 | cplus_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2186 | { |
2187 | char *name; | |
2188 | struct type *type; | |
8b93c638 JM |
2189 | |
2190 | if (CPLUS_FAKE_CHILD (parent)) | |
2191 | { | |
2192 | /* Looking for children of public, private, or protected. */ | |
2193 | type = get_type_deref (parent->parent); | |
2194 | } | |
2195 | else | |
2196 | type = get_type_deref (parent); | |
2197 | ||
2198 | name = NULL; | |
2199 | switch (TYPE_CODE (type)) | |
2200 | { | |
2201 | case TYPE_CODE_STRUCT: | |
2202 | case TYPE_CODE_UNION: | |
8b93c638 JM |
2203 | if (CPLUS_FAKE_CHILD (parent)) |
2204 | { | |
6e382aa3 JJ |
2205 | /* The fields of the class type are ordered as they |
2206 | appear in the class. We are given an index for a | |
2207 | particular access control type ("public","protected", | |
2208 | or "private"). We must skip over fields that don't | |
2209 | have the access control we are looking for to properly | |
2210 | find the indexed field. */ | |
2211 | int type_index = TYPE_N_BASECLASSES (type); | |
2212 | if (strcmp (parent->name, "private") == 0) | |
2213 | { | |
2214 | while (index >= 0) | |
2215 | { | |
2216 | if (TYPE_VPTR_BASETYPE (type) == type | |
2217 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2218 | ; /* ignore vptr */ | |
2219 | else if (TYPE_FIELD_PRIVATE (type, type_index)) | |
2220 | --index; | |
2221 | ++type_index; | |
2222 | } | |
2223 | --type_index; | |
2224 | } | |
2225 | else if (strcmp (parent->name, "protected") == 0) | |
2226 | { | |
2227 | while (index >= 0) | |
2228 | { | |
2229 | if (TYPE_VPTR_BASETYPE (type) == type | |
2230 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2231 | ; /* ignore vptr */ | |
2232 | else if (TYPE_FIELD_PROTECTED (type, type_index)) | |
2233 | --index; | |
2234 | ++type_index; | |
2235 | } | |
2236 | --type_index; | |
2237 | } | |
2238 | else | |
2239 | { | |
2240 | while (index >= 0) | |
2241 | { | |
2242 | if (TYPE_VPTR_BASETYPE (type) == type | |
2243 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2244 | ; /* ignore vptr */ | |
2245 | else if (!TYPE_FIELD_PRIVATE (type, type_index) && | |
2246 | !TYPE_FIELD_PROTECTED (type, type_index)) | |
2247 | --index; | |
2248 | ++type_index; | |
2249 | } | |
2250 | --type_index; | |
2251 | } | |
2252 | ||
2253 | name = TYPE_FIELD_NAME (type, type_index); | |
8b93c638 JM |
2254 | } |
2255 | else if (index < TYPE_N_BASECLASSES (type)) | |
6e382aa3 | 2256 | /* We are looking up the name of a base class */ |
8b93c638 JM |
2257 | name = TYPE_FIELD_NAME (type, index); |
2258 | else | |
2259 | { | |
6e382aa3 JJ |
2260 | int children[3]; |
2261 | cplus_class_num_children(type, children); | |
2262 | ||
8b93c638 | 2263 | /* Everything beyond the baseclasses can |
6e382aa3 JJ |
2264 | only be "public", "private", or "protected" |
2265 | ||
2266 | The special "fake" children are always output by varobj in | |
2267 | this order. So if INDEX == 2, it MUST be "protected". */ | |
8b93c638 JM |
2268 | index -= TYPE_N_BASECLASSES (type); |
2269 | switch (index) | |
2270 | { | |
2271 | case 0: | |
6e382aa3 JJ |
2272 | if (children[v_public] > 0) |
2273 | name = "public"; | |
2274 | else if (children[v_private] > 0) | |
2275 | name = "private"; | |
2276 | else | |
2277 | name = "protected"; | |
2278 | break; | |
8b93c638 | 2279 | case 1: |
6e382aa3 | 2280 | if (children[v_public] > 0) |
8b93c638 | 2281 | { |
6e382aa3 JJ |
2282 | if (children[v_private] > 0) |
2283 | name = "private"; | |
2284 | else | |
2285 | name = "protected"; | |
8b93c638 | 2286 | } |
6e382aa3 JJ |
2287 | else if (children[v_private] > 0) |
2288 | name = "protected"; | |
2289 | break; | |
8b93c638 | 2290 | case 2: |
6e382aa3 JJ |
2291 | /* Must be protected */ |
2292 | name = "protected"; | |
2293 | break; | |
8b93c638 JM |
2294 | default: |
2295 | /* error! */ | |
2296 | break; | |
2297 | } | |
2298 | } | |
2299 | break; | |
2300 | ||
2301 | default: | |
2302 | break; | |
2303 | } | |
2304 | ||
2305 | if (name == NULL) | |
2306 | return c_name_of_child (parent, index); | |
2307 | else | |
2308 | { | |
2309 | if (name != NULL) | |
2310 | name = savestring (name, strlen (name)); | |
2311 | } | |
2312 | ||
2313 | return name; | |
2314 | } | |
2315 | ||
30b28db1 | 2316 | static struct value * |
fba45db2 | 2317 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 2318 | { |
73a93a32 | 2319 | return c_value_of_root (var_handle); |
8b93c638 JM |
2320 | } |
2321 | ||
30b28db1 | 2322 | static struct value * |
fba45db2 | 2323 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2324 | { |
2325 | struct type *type; | |
30b28db1 | 2326 | struct value *value; |
8b93c638 JM |
2327 | |
2328 | if (CPLUS_FAKE_CHILD (parent)) | |
2329 | type = get_type_deref (parent->parent); | |
2330 | else | |
2331 | type = get_type_deref (parent); | |
2332 | ||
2333 | value = NULL; | |
8b93c638 JM |
2334 | |
2335 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
2336 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) | |
2337 | { | |
2338 | if (CPLUS_FAKE_CHILD (parent)) | |
2339 | { | |
5bbc1a8e | 2340 | char *name; |
30b28db1 | 2341 | struct value *temp = parent->parent->value; |
30c6b1fb | 2342 | |
575bbeb6 KS |
2343 | if (temp == NULL) |
2344 | return NULL; | |
2345 | ||
5bbc1a8e | 2346 | name = name_of_child (parent, index); |
30c6b1fb KS |
2347 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
2348 | "cplus_structure"); | |
2349 | if (value != NULL) | |
2350 | release_value (value); | |
5bbc1a8e KS |
2351 | |
2352 | xfree (name); | |
8b93c638 JM |
2353 | } |
2354 | else if (index >= TYPE_N_BASECLASSES (type)) | |
2355 | { | |
2356 | /* public, private, or protected */ | |
2357 | return NULL; | |
2358 | } | |
2359 | else | |
2360 | { | |
2361 | /* Baseclass */ | |
2362 | if (parent->value != NULL) | |
2363 | { | |
575bbeb6 | 2364 | struct value *temp = NULL; |
8b93c638 | 2365 | |
df407dfe AC |
2366 | if (TYPE_CODE (value_type (parent->value)) == TYPE_CODE_PTR |
2367 | || TYPE_CODE (value_type (parent->value)) == TYPE_CODE_REF) | |
4abb499e KS |
2368 | { |
2369 | if (!gdb_value_ind (parent->value, &temp)) | |
2370 | return NULL; | |
2371 | } | |
8b93c638 JM |
2372 | else |
2373 | temp = parent->value; | |
2374 | ||
575bbeb6 KS |
2375 | if (temp != NULL) |
2376 | { | |
2377 | value = value_cast (TYPE_FIELD_TYPE (type, index), temp); | |
2378 | release_value (value); | |
2379 | } | |
2380 | else | |
2381 | { | |
2382 | /* We failed to evaluate the parent's value, so don't even | |
2383 | bother trying to evaluate this child. */ | |
2384 | return NULL; | |
2385 | } | |
8b93c638 JM |
2386 | } |
2387 | } | |
2388 | } | |
2389 | ||
2390 | if (value == NULL) | |
2391 | return c_value_of_child (parent, index); | |
2392 | ||
2393 | return value; | |
2394 | } | |
2395 | ||
2396 | static struct type * | |
fba45db2 | 2397 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2398 | { |
2399 | struct type *type, *t; | |
2400 | ||
575bbeb6 KS |
2401 | if (CPLUS_FAKE_CHILD (parent)) |
2402 | { | |
2403 | /* Looking for the type of a child of public, private, or protected. */ | |
2404 | t = get_type_deref (parent->parent); | |
2405 | } | |
2406 | else | |
2407 | t = get_type_deref (parent); | |
2408 | ||
8b93c638 JM |
2409 | type = NULL; |
2410 | switch (TYPE_CODE (t)) | |
2411 | { | |
2412 | case TYPE_CODE_STRUCT: | |
2413 | case TYPE_CODE_UNION: | |
575bbeb6 | 2414 | if (CPLUS_FAKE_CHILD (parent)) |
8b93c638 | 2415 | { |
575bbeb6 KS |
2416 | char *name = cplus_name_of_child (parent, index); |
2417 | type = lookup_struct_elt_type (t, name, 0); | |
2418 | xfree (name); | |
8b93c638 | 2419 | } |
575bbeb6 KS |
2420 | else if (index < TYPE_N_BASECLASSES (t)) |
2421 | type = TYPE_FIELD_TYPE (t, index); | |
8b93c638 JM |
2422 | else |
2423 | { | |
575bbeb6 KS |
2424 | /* special */ |
2425 | return NULL; | |
8b93c638 JM |
2426 | } |
2427 | break; | |
2428 | ||
2429 | default: | |
2430 | break; | |
2431 | } | |
2432 | ||
2433 | if (type == NULL) | |
2434 | return c_type_of_child (parent, index); | |
2435 | ||
2436 | return type; | |
2437 | } | |
2438 | ||
2439 | static int | |
fba45db2 | 2440 | cplus_variable_editable (struct varobj *var) |
8b93c638 JM |
2441 | { |
2442 | if (CPLUS_FAKE_CHILD (var)) | |
2443 | return 0; | |
2444 | ||
2445 | return c_variable_editable (var); | |
2446 | } | |
2447 | ||
2448 | static char * | |
fba45db2 | 2449 | cplus_value_of_variable (struct varobj *var) |
8b93c638 JM |
2450 | { |
2451 | ||
2452 | /* If we have one of our special types, don't print out | |
2453 | any value. */ | |
2454 | if (CPLUS_FAKE_CHILD (var)) | |
2455 | return xstrdup (""); | |
2456 | ||
2457 | return c_value_of_variable (var); | |
2458 | } | |
2459 | \f | |
2460 | /* Java */ | |
2461 | ||
2462 | static int | |
fba45db2 | 2463 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
2464 | { |
2465 | return cplus_number_of_children (var); | |
2466 | } | |
2467 | ||
2468 | static char * | |
fba45db2 | 2469 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2470 | { |
2471 | char *p, *name; | |
2472 | ||
2473 | name = cplus_name_of_variable (parent); | |
2474 | /* If the name has "-" in it, it is because we | |
2475 | needed to escape periods in the name... */ | |
2476 | p = name; | |
2477 | ||
2478 | while (*p != '\000') | |
2479 | { | |
2480 | if (*p == '-') | |
2481 | *p = '.'; | |
2482 | p++; | |
2483 | } | |
2484 | ||
2485 | return name; | |
2486 | } | |
2487 | ||
2488 | static char * | |
fba45db2 | 2489 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2490 | { |
2491 | char *name, *p; | |
2492 | ||
2493 | name = cplus_name_of_child (parent, index); | |
2494 | /* Escape any periods in the name... */ | |
2495 | p = name; | |
2496 | ||
2497 | while (*p != '\000') | |
2498 | { | |
2499 | if (*p == '.') | |
2500 | *p = '-'; | |
2501 | p++; | |
2502 | } | |
2503 | ||
2504 | return name; | |
2505 | } | |
2506 | ||
30b28db1 | 2507 | static struct value * |
fba45db2 | 2508 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 2509 | { |
73a93a32 | 2510 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
2511 | } |
2512 | ||
30b28db1 | 2513 | static struct value * |
fba45db2 | 2514 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2515 | { |
2516 | return cplus_value_of_child (parent, index); | |
2517 | } | |
2518 | ||
2519 | static struct type * | |
fba45db2 | 2520 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2521 | { |
2522 | return cplus_type_of_child (parent, index); | |
2523 | } | |
2524 | ||
2525 | static int | |
fba45db2 | 2526 | java_variable_editable (struct varobj *var) |
8b93c638 JM |
2527 | { |
2528 | return cplus_variable_editable (var); | |
2529 | } | |
2530 | ||
2531 | static char * | |
fba45db2 | 2532 | java_value_of_variable (struct varobj *var) |
8b93c638 JM |
2533 | { |
2534 | return cplus_value_of_variable (var); | |
2535 | } | |
2536 | \f | |
2537 | extern void _initialize_varobj (void); | |
2538 | void | |
2539 | _initialize_varobj (void) | |
2540 | { | |
2541 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
2542 | ||
2543 | varobj_table = xmalloc (sizeof_table); | |
2544 | memset (varobj_table, 0, sizeof_table); | |
2545 | ||
85c07804 AC |
2546 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
2547 | &varobjdebug, _("\ | |
2548 | Set varobj debugging."), _("\ | |
2549 | Show varobj debugging."), _("\ | |
2550 | When non-zero, varobj debugging is enabled."), | |
2551 | NULL, | |
920d2a44 | 2552 | show_varobjdebug, |
85c07804 | 2553 | &setlist, &showlist); |
8b93c638 | 2554 | } |