Commit | Line | Data |
---|---|---|
8b93c638 | 1 | /* Implementation of the GDB variable objects API. |
bc8332bb | 2 | |
48426bc2 | 3 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
1ecb4ee0 | 4 | Free Software Foundation, Inc. |
8b93c638 JM |
5 | |
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | Boston, MA 02110-1301, USA. */ | |
8b93c638 JM |
20 | |
21 | #include "defs.h" | |
a6c442d8 | 22 | #include "exceptions.h" |
8b93c638 JM |
23 | #include "value.h" |
24 | #include "expression.h" | |
25 | #include "frame.h" | |
8b93c638 JM |
26 | #include "language.h" |
27 | #include "wrapper.h" | |
28 | #include "gdbcmd.h" | |
a6c442d8 MK |
29 | |
30 | #include "gdb_assert.h" | |
b66d6d2e | 31 | #include "gdb_string.h" |
8b93c638 JM |
32 | |
33 | #include "varobj.h" | |
34 | ||
35 | /* Non-zero if we want to see trace of varobj level stuff. */ | |
36 | ||
37 | int varobjdebug = 0; | |
920d2a44 AC |
38 | static void |
39 | show_varobjdebug (struct ui_file *file, int from_tty, | |
40 | struct cmd_list_element *c, const char *value) | |
41 | { | |
42 | fprintf_filtered (file, _("Varobj debugging is %s.\n"), value); | |
43 | } | |
8b93c638 JM |
44 | |
45 | /* String representations of gdb's format codes */ | |
46 | char *varobj_format_string[] = | |
72330bd6 | 47 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 JM |
48 | |
49 | /* String representations of gdb's known languages */ | |
72330bd6 | 50 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 JM |
51 | |
52 | /* Data structures */ | |
53 | ||
54 | /* Every root variable has one of these structures saved in its | |
55 | varobj. Members which must be free'd are noted. */ | |
56 | struct varobj_root | |
72330bd6 | 57 | { |
8b93c638 | 58 | |
72330bd6 AC |
59 | /* Alloc'd expression for this parent. */ |
60 | struct expression *exp; | |
8b93c638 | 61 | |
72330bd6 AC |
62 | /* Block for which this expression is valid */ |
63 | struct block *valid_block; | |
8b93c638 | 64 | |
72330bd6 | 65 | /* The frame for this expression */ |
e64d9b3d | 66 | struct frame_id frame; |
8b93c638 | 67 | |
72330bd6 AC |
68 | /* If 1, "update" always recomputes the frame & valid block |
69 | using the currently selected frame. */ | |
70 | int use_selected_frame; | |
73a93a32 | 71 | |
72330bd6 AC |
72 | /* Language info for this variable and its children */ |
73 | struct language_specific *lang; | |
8b93c638 | 74 | |
72330bd6 AC |
75 | /* The varobj for this root node. */ |
76 | struct varobj *rootvar; | |
8b93c638 | 77 | |
72330bd6 AC |
78 | /* Next root variable */ |
79 | struct varobj_root *next; | |
80 | }; | |
8b93c638 JM |
81 | |
82 | /* Every variable in the system has a structure of this type defined | |
83 | for it. This structure holds all information necessary to manipulate | |
84 | a particular object variable. Members which must be freed are noted. */ | |
85 | struct varobj | |
72330bd6 | 86 | { |
8b93c638 | 87 | |
72330bd6 AC |
88 | /* Alloc'd name of the variable for this object.. If this variable is a |
89 | child, then this name will be the child's source name. | |
90 | (bar, not foo.bar) */ | |
91 | /* NOTE: This is the "expression" */ | |
92 | char *name; | |
8b93c638 | 93 | |
72330bd6 AC |
94 | /* The alloc'd name for this variable's object. This is here for |
95 | convenience when constructing this object's children. */ | |
96 | char *obj_name; | |
8b93c638 | 97 | |
72330bd6 AC |
98 | /* Index of this variable in its parent or -1 */ |
99 | int index; | |
8b93c638 | 100 | |
72330bd6 AC |
101 | /* The type of this variable. This may NEVER be NULL. */ |
102 | struct type *type; | |
8b93c638 | 103 | |
72330bd6 | 104 | /* The value of this expression or subexpression. This may be NULL. */ |
30b28db1 | 105 | struct value *value; |
8b93c638 | 106 | |
72330bd6 AC |
107 | /* Did an error occur evaluating the expression or getting its value? */ |
108 | int error; | |
8b93c638 | 109 | |
72330bd6 AC |
110 | /* The number of (immediate) children this variable has */ |
111 | int num_children; | |
8b93c638 | 112 | |
72330bd6 AC |
113 | /* If this object is a child, this points to its immediate parent. */ |
114 | struct varobj *parent; | |
8b93c638 | 115 | |
72330bd6 AC |
116 | /* A list of this object's children */ |
117 | struct varobj_child *children; | |
8b93c638 | 118 | |
72330bd6 AC |
119 | /* Description of the root variable. Points to root variable for children. */ |
120 | struct varobj_root *root; | |
8b93c638 | 121 | |
72330bd6 AC |
122 | /* The format of the output for this object */ |
123 | enum varobj_display_formats format; | |
fb9b6b35 JJ |
124 | |
125 | /* Was this variable updated via a varobj_set_value operation */ | |
126 | int updated; | |
72330bd6 | 127 | }; |
8b93c638 JM |
128 | |
129 | /* Every variable keeps a linked list of its children, described | |
130 | by the following structure. */ | |
131 | /* FIXME: Deprecated. All should use vlist instead */ | |
132 | ||
133 | struct varobj_child | |
72330bd6 | 134 | { |
8b93c638 | 135 | |
72330bd6 AC |
136 | /* Pointer to the child's data */ |
137 | struct varobj *child; | |
8b93c638 | 138 | |
72330bd6 AC |
139 | /* Pointer to the next child */ |
140 | struct varobj_child *next; | |
141 | }; | |
8b93c638 JM |
142 | |
143 | /* A stack of varobjs */ | |
144 | /* FIXME: Deprecated. All should use vlist instead */ | |
145 | ||
146 | struct vstack | |
72330bd6 AC |
147 | { |
148 | struct varobj *var; | |
149 | struct vstack *next; | |
150 | }; | |
8b93c638 JM |
151 | |
152 | struct cpstack | |
72330bd6 AC |
153 | { |
154 | char *name; | |
155 | struct cpstack *next; | |
156 | }; | |
8b93c638 JM |
157 | |
158 | /* A list of varobjs */ | |
159 | ||
160 | struct vlist | |
72330bd6 AC |
161 | { |
162 | struct varobj *var; | |
163 | struct vlist *next; | |
164 | }; | |
8b93c638 JM |
165 | |
166 | /* Private function prototypes */ | |
167 | ||
168 | /* Helper functions for the above subcommands. */ | |
169 | ||
a14ed312 | 170 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 171 | |
a14ed312 KB |
172 | static void delete_variable_1 (struct cpstack **, int *, |
173 | struct varobj *, int, int); | |
8b93c638 | 174 | |
a14ed312 | 175 | static int install_variable (struct varobj *); |
8b93c638 | 176 | |
a14ed312 | 177 | static void uninstall_variable (struct varobj *); |
8b93c638 | 178 | |
a14ed312 | 179 | static struct varobj *child_exists (struct varobj *, char *); |
8b93c638 | 180 | |
a14ed312 | 181 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 182 | |
a14ed312 | 183 | static void save_child_in_parent (struct varobj *, struct varobj *); |
8b93c638 | 184 | |
a14ed312 | 185 | static void remove_child_from_parent (struct varobj *, struct varobj *); |
8b93c638 JM |
186 | |
187 | /* Utility routines */ | |
188 | ||
a14ed312 | 189 | static struct varobj *new_variable (void); |
8b93c638 | 190 | |
a14ed312 | 191 | static struct varobj *new_root_variable (void); |
8b93c638 | 192 | |
a14ed312 | 193 | static void free_variable (struct varobj *var); |
8b93c638 | 194 | |
74b7792f AC |
195 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
196 | ||
a14ed312 | 197 | static struct type *get_type (struct varobj *var); |
8b93c638 | 198 | |
a14ed312 | 199 | static struct type *get_type_deref (struct varobj *var); |
8b93c638 | 200 | |
a14ed312 | 201 | static struct type *get_target_type (struct type *); |
8b93c638 | 202 | |
a14ed312 | 203 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 204 | |
30b28db1 | 205 | static int my_value_equal (struct value *, struct value *, int *); |
8b93c638 | 206 | |
a14ed312 | 207 | static void vpush (struct vstack **pstack, struct varobj *var); |
8b93c638 | 208 | |
a14ed312 | 209 | static struct varobj *vpop (struct vstack **pstack); |
8b93c638 | 210 | |
a14ed312 | 211 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 212 | |
a14ed312 | 213 | static char *cppop (struct cpstack **pstack); |
8b93c638 JM |
214 | |
215 | /* Language-specific routines. */ | |
216 | ||
a14ed312 | 217 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 218 | |
a14ed312 | 219 | static int number_of_children (struct varobj *); |
8b93c638 | 220 | |
a14ed312 | 221 | static char *name_of_variable (struct varobj *); |
8b93c638 | 222 | |
a14ed312 | 223 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 224 | |
30b28db1 | 225 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 226 | |
30b28db1 | 227 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 228 | |
a14ed312 | 229 | static struct type *type_of_child (struct varobj *var); |
8b93c638 | 230 | |
a14ed312 | 231 | static int variable_editable (struct varobj *var); |
8b93c638 | 232 | |
a14ed312 | 233 | static char *my_value_of_variable (struct varobj *var); |
8b93c638 | 234 | |
a14ed312 | 235 | static int type_changeable (struct varobj *var); |
8b93c638 JM |
236 | |
237 | /* C implementation */ | |
238 | ||
a14ed312 | 239 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 240 | |
a14ed312 | 241 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 242 | |
a14ed312 | 243 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 244 | |
30b28db1 | 245 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 246 | |
30b28db1 | 247 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 248 | |
a14ed312 | 249 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 250 | |
a14ed312 | 251 | static int c_variable_editable (struct varobj *var); |
8b93c638 | 252 | |
a14ed312 | 253 | static char *c_value_of_variable (struct varobj *var); |
8b93c638 JM |
254 | |
255 | /* C++ implementation */ | |
256 | ||
a14ed312 | 257 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 258 | |
a14ed312 | 259 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 260 | |
a14ed312 | 261 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 262 | |
a14ed312 | 263 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 264 | |
30b28db1 | 265 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 266 | |
30b28db1 | 267 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 268 | |
a14ed312 | 269 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 270 | |
a14ed312 | 271 | static int cplus_variable_editable (struct varobj *var); |
8b93c638 | 272 | |
a14ed312 | 273 | static char *cplus_value_of_variable (struct varobj *var); |
8b93c638 JM |
274 | |
275 | /* Java implementation */ | |
276 | ||
a14ed312 | 277 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 278 | |
a14ed312 | 279 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 280 | |
a14ed312 | 281 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 282 | |
30b28db1 | 283 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 284 | |
30b28db1 | 285 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 286 | |
a14ed312 | 287 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 288 | |
a14ed312 | 289 | static int java_variable_editable (struct varobj *var); |
8b93c638 | 290 | |
a14ed312 | 291 | static char *java_value_of_variable (struct varobj *var); |
8b93c638 JM |
292 | |
293 | /* The language specific vector */ | |
294 | ||
295 | struct language_specific | |
72330bd6 | 296 | { |
8b93c638 | 297 | |
72330bd6 AC |
298 | /* The language of this variable */ |
299 | enum varobj_languages language; | |
8b93c638 | 300 | |
72330bd6 AC |
301 | /* The number of children of PARENT. */ |
302 | int (*number_of_children) (struct varobj * parent); | |
8b93c638 | 303 | |
72330bd6 AC |
304 | /* The name (expression) of a root varobj. */ |
305 | char *(*name_of_variable) (struct varobj * parent); | |
8b93c638 | 306 | |
72330bd6 AC |
307 | /* The name of the INDEX'th child of PARENT. */ |
308 | char *(*name_of_child) (struct varobj * parent, int index); | |
8b93c638 | 309 | |
30b28db1 AC |
310 | /* The ``struct value *'' of the root variable ROOT. */ |
311 | struct value *(*value_of_root) (struct varobj ** root_handle); | |
8b93c638 | 312 | |
30b28db1 AC |
313 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
314 | struct value *(*value_of_child) (struct varobj * parent, int index); | |
8b93c638 | 315 | |
72330bd6 AC |
316 | /* The type of the INDEX'th child of PARENT. */ |
317 | struct type *(*type_of_child) (struct varobj * parent, int index); | |
8b93c638 | 318 | |
72330bd6 AC |
319 | /* Is VAR editable? */ |
320 | int (*variable_editable) (struct varobj * var); | |
8b93c638 | 321 | |
72330bd6 AC |
322 | /* The current value of VAR. */ |
323 | char *(*value_of_variable) (struct varobj * var); | |
324 | }; | |
8b93c638 JM |
325 | |
326 | /* Array of known source language routines. */ | |
327 | static struct language_specific | |
72330bd6 | 328 | languages[vlang_end][sizeof (struct language_specific)] = { |
8b93c638 JM |
329 | /* Unknown (try treating as C */ |
330 | { | |
72330bd6 AC |
331 | vlang_unknown, |
332 | c_number_of_children, | |
333 | c_name_of_variable, | |
334 | c_name_of_child, | |
335 | c_value_of_root, | |
336 | c_value_of_child, | |
337 | c_type_of_child, | |
338 | c_variable_editable, | |
339 | c_value_of_variable} | |
8b93c638 JM |
340 | , |
341 | /* C */ | |
342 | { | |
72330bd6 AC |
343 | vlang_c, |
344 | c_number_of_children, | |
345 | c_name_of_variable, | |
346 | c_name_of_child, | |
347 | c_value_of_root, | |
348 | c_value_of_child, | |
349 | c_type_of_child, | |
350 | c_variable_editable, | |
351 | c_value_of_variable} | |
8b93c638 JM |
352 | , |
353 | /* C++ */ | |
354 | { | |
72330bd6 AC |
355 | vlang_cplus, |
356 | cplus_number_of_children, | |
357 | cplus_name_of_variable, | |
358 | cplus_name_of_child, | |
359 | cplus_value_of_root, | |
360 | cplus_value_of_child, | |
361 | cplus_type_of_child, | |
362 | cplus_variable_editable, | |
363 | cplus_value_of_variable} | |
8b93c638 JM |
364 | , |
365 | /* Java */ | |
366 | { | |
72330bd6 AC |
367 | vlang_java, |
368 | java_number_of_children, | |
369 | java_name_of_variable, | |
370 | java_name_of_child, | |
371 | java_value_of_root, | |
372 | java_value_of_child, | |
373 | java_type_of_child, | |
374 | java_variable_editable, | |
375 | java_value_of_variable} | |
8b93c638 JM |
376 | }; |
377 | ||
378 | /* A little convenience enum for dealing with C++/Java */ | |
379 | enum vsections | |
72330bd6 AC |
380 | { |
381 | v_public = 0, v_private, v_protected | |
382 | }; | |
8b93c638 JM |
383 | |
384 | /* Private data */ | |
385 | ||
386 | /* Mappings of varobj_display_formats enums to gdb's format codes */ | |
72330bd6 | 387 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 JM |
388 | |
389 | /* Header of the list of root variable objects */ | |
390 | static struct varobj_root *rootlist; | |
391 | static int rootcount = 0; /* number of root varobjs in the list */ | |
392 | ||
393 | /* Prime number indicating the number of buckets in the hash table */ | |
394 | /* A prime large enough to avoid too many colisions */ | |
395 | #define VAROBJ_TABLE_SIZE 227 | |
396 | ||
397 | /* Pointer to the varobj hash table (built at run time) */ | |
398 | static struct vlist **varobj_table; | |
399 | ||
8b93c638 JM |
400 | /* Is the variable X one of our "fake" children? */ |
401 | #define CPLUS_FAKE_CHILD(x) \ | |
402 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
403 | \f | |
404 | ||
405 | /* API Implementation */ | |
406 | ||
407 | /* Creates a varobj (not its children) */ | |
408 | ||
7d8547c9 AC |
409 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
410 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ | |
411 | ||
412 | static struct frame_info * | |
413 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) | |
414 | { | |
415 | struct frame_info *frame = NULL; | |
416 | ||
417 | if (frame_addr == (CORE_ADDR) 0) | |
418 | return NULL; | |
419 | ||
420 | while (1) | |
421 | { | |
422 | frame = get_prev_frame (frame); | |
423 | if (frame == NULL) | |
424 | return NULL; | |
eb5492fa | 425 | if (get_frame_base_address (frame) == frame_addr) |
7d8547c9 AC |
426 | return frame; |
427 | } | |
428 | } | |
429 | ||
8b93c638 JM |
430 | struct varobj * |
431 | varobj_create (char *objname, | |
72330bd6 | 432 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
433 | { |
434 | struct varobj *var; | |
2c67cb8b AC |
435 | struct frame_info *fi; |
436 | struct frame_info *old_fi = NULL; | |
8b93c638 JM |
437 | struct block *block; |
438 | struct cleanup *old_chain; | |
439 | ||
440 | /* Fill out a varobj structure for the (root) variable being constructed. */ | |
441 | var = new_root_variable (); | |
74b7792f | 442 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
443 | |
444 | if (expression != NULL) | |
445 | { | |
446 | char *p; | |
447 | enum varobj_languages lang; | |
448 | ||
449 | /* Parse and evaluate the expression, filling in as much | |
450 | of the variable's data as possible */ | |
451 | ||
452 | /* Allow creator to specify context of variable */ | |
72330bd6 | 453 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
6e7f8b9c | 454 | fi = deprecated_selected_frame; |
8b93c638 | 455 | else |
7d8547c9 AC |
456 | /* FIXME: cagney/2002-11-23: This code should be doing a |
457 | lookup using the frame ID and not just the frame's | |
458 | ``address''. This, of course, means an interface change. | |
459 | However, with out that interface change ISAs, such as the | |
460 | ia64 with its two stacks, won't work. Similar goes for the | |
461 | case where there is a frameless function. */ | |
8b93c638 JM |
462 | fi = find_frame_addr_in_frame_chain (frame); |
463 | ||
73a93a32 JI |
464 | /* frame = -2 means always use selected frame */ |
465 | if (type == USE_SELECTED_FRAME) | |
466 | var->root->use_selected_frame = 1; | |
467 | ||
8b93c638 JM |
468 | block = NULL; |
469 | if (fi != NULL) | |
ae767bfb | 470 | block = get_frame_block (fi, 0); |
8b93c638 JM |
471 | |
472 | p = expression; | |
473 | innermost_block = NULL; | |
73a93a32 JI |
474 | /* Wrap the call to parse expression, so we can |
475 | return a sensible error. */ | |
476 | if (!gdb_parse_exp_1 (&p, block, 0, &var->root->exp)) | |
477 | { | |
478 | return NULL; | |
479 | } | |
8b93c638 JM |
480 | |
481 | /* Don't allow variables to be created for types. */ | |
482 | if (var->root->exp->elts[0].opcode == OP_TYPE) | |
483 | { | |
484 | do_cleanups (old_chain); | |
bc8332bb AC |
485 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
486 | " as an expression.\n"); | |
8b93c638 JM |
487 | return NULL; |
488 | } | |
489 | ||
490 | var->format = variable_default_display (var); | |
491 | var->root->valid_block = innermost_block; | |
492 | var->name = savestring (expression, strlen (expression)); | |
493 | ||
494 | /* When the frame is different from the current frame, | |
495 | we must select the appropriate frame before parsing | |
496 | the expression, otherwise the value will not be current. | |
497 | Since select_frame is so benign, just call it for all cases. */ | |
498 | if (fi != NULL) | |
499 | { | |
7a424e99 | 500 | var->root->frame = get_frame_id (fi); |
6e7f8b9c | 501 | old_fi = deprecated_selected_frame; |
0f7d239c | 502 | select_frame (fi); |
8b93c638 JM |
503 | } |
504 | ||
505 | /* We definitively need to catch errors here. | |
506 | If evaluate_expression succeeds we got the value we wanted. | |
507 | But if it fails, we still go on with a call to evaluate_type() */ | |
508 | if (gdb_evaluate_expression (var->root->exp, &var->value)) | |
509 | { | |
510 | /* no error */ | |
511 | release_value (var->value); | |
d69fe07e | 512 | if (value_lazy (var->value)) |
8b93c638 JM |
513 | gdb_value_fetch_lazy (var->value); |
514 | } | |
515 | else | |
516 | var->value = evaluate_type (var->root->exp); | |
517 | ||
df407dfe | 518 | var->type = value_type (var->value); |
8b93c638 JM |
519 | |
520 | /* Set language info */ | |
521 | lang = variable_language (var); | |
522 | var->root->lang = languages[lang]; | |
523 | ||
524 | /* Set ourselves as our root */ | |
525 | var->root->rootvar = var; | |
526 | ||
527 | /* Reset the selected frame */ | |
528 | if (fi != NULL) | |
0f7d239c | 529 | select_frame (old_fi); |
8b93c638 JM |
530 | } |
531 | ||
73a93a32 JI |
532 | /* If the variable object name is null, that means this |
533 | is a temporary variable, so don't install it. */ | |
534 | ||
535 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 JM |
536 | { |
537 | var->obj_name = savestring (objname, strlen (objname)); | |
538 | ||
539 | /* If a varobj name is duplicated, the install will fail so | |
540 | we must clenup */ | |
541 | if (!install_variable (var)) | |
542 | { | |
543 | do_cleanups (old_chain); | |
544 | return NULL; | |
545 | } | |
546 | } | |
547 | ||
548 | discard_cleanups (old_chain); | |
549 | return var; | |
550 | } | |
551 | ||
552 | /* Generates an unique name that can be used for a varobj */ | |
553 | ||
554 | char * | |
555 | varobj_gen_name (void) | |
556 | { | |
557 | static int id = 0; | |
e64d9b3d | 558 | char *obj_name; |
8b93c638 JM |
559 | |
560 | /* generate a name for this object */ | |
561 | id++; | |
b435e160 | 562 | obj_name = xstrprintf ("var%d", id); |
8b93c638 | 563 | |
e64d9b3d | 564 | return obj_name; |
8b93c638 JM |
565 | } |
566 | ||
567 | /* Given an "objname", returns the pointer to the corresponding varobj | |
568 | or NULL if not found */ | |
569 | ||
570 | struct varobj * | |
571 | varobj_get_handle (char *objname) | |
572 | { | |
573 | struct vlist *cv; | |
574 | const char *chp; | |
575 | unsigned int index = 0; | |
576 | unsigned int i = 1; | |
577 | ||
578 | for (chp = objname; *chp; chp++) | |
579 | { | |
580 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
581 | } | |
582 | ||
583 | cv = *(varobj_table + index); | |
584 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
585 | cv = cv->next; | |
586 | ||
587 | if (cv == NULL) | |
8a3fe4f8 | 588 | error (_("Variable object not found")); |
8b93c638 JM |
589 | |
590 | return cv->var; | |
591 | } | |
592 | ||
593 | /* Given the handle, return the name of the object */ | |
594 | ||
595 | char * | |
596 | varobj_get_objname (struct varobj *var) | |
597 | { | |
598 | return var->obj_name; | |
599 | } | |
600 | ||
601 | /* Given the handle, return the expression represented by the object */ | |
602 | ||
603 | char * | |
604 | varobj_get_expression (struct varobj *var) | |
605 | { | |
606 | return name_of_variable (var); | |
607 | } | |
608 | ||
609 | /* Deletes a varobj and all its children if only_children == 0, | |
610 | otherwise deletes only the children; returns a malloc'ed list of all the | |
611 | (malloc'ed) names of the variables that have been deleted (NULL terminated) */ | |
612 | ||
613 | int | |
614 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
615 | { | |
616 | int delcount; | |
617 | int mycount; | |
618 | struct cpstack *result = NULL; | |
619 | char **cp; | |
620 | ||
621 | /* Initialize a stack for temporary results */ | |
622 | cppush (&result, NULL); | |
623 | ||
624 | if (only_children) | |
625 | /* Delete only the variable children */ | |
626 | delcount = delete_variable (&result, var, 1 /* only the children */ ); | |
627 | else | |
628 | /* Delete the variable and all its children */ | |
629 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); | |
630 | ||
631 | /* We may have been asked to return a list of what has been deleted */ | |
632 | if (dellist != NULL) | |
633 | { | |
634 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
635 | ||
636 | cp = *dellist; | |
637 | mycount = delcount; | |
638 | *cp = cppop (&result); | |
639 | while ((*cp != NULL) && (mycount > 0)) | |
640 | { | |
641 | mycount--; | |
642 | cp++; | |
643 | *cp = cppop (&result); | |
644 | } | |
645 | ||
646 | if (mycount || (*cp != NULL)) | |
8a3fe4f8 | 647 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
72330bd6 | 648 | mycount); |
8b93c638 JM |
649 | } |
650 | ||
651 | return delcount; | |
652 | } | |
653 | ||
654 | /* Set/Get variable object display format */ | |
655 | ||
656 | enum varobj_display_formats | |
657 | varobj_set_display_format (struct varobj *var, | |
658 | enum varobj_display_formats format) | |
659 | { | |
660 | switch (format) | |
661 | { | |
662 | case FORMAT_NATURAL: | |
663 | case FORMAT_BINARY: | |
664 | case FORMAT_DECIMAL: | |
665 | case FORMAT_HEXADECIMAL: | |
666 | case FORMAT_OCTAL: | |
667 | var->format = format; | |
668 | break; | |
669 | ||
670 | default: | |
671 | var->format = variable_default_display (var); | |
672 | } | |
673 | ||
674 | return var->format; | |
675 | } | |
676 | ||
677 | enum varobj_display_formats | |
678 | varobj_get_display_format (struct varobj *var) | |
679 | { | |
680 | return var->format; | |
681 | } | |
682 | ||
683 | int | |
684 | varobj_get_num_children (struct varobj *var) | |
685 | { | |
686 | if (var->num_children == -1) | |
687 | var->num_children = number_of_children (var); | |
688 | ||
689 | return var->num_children; | |
690 | } | |
691 | ||
692 | /* Creates a list of the immediate children of a variable object; | |
693 | the return code is the number of such children or -1 on error */ | |
694 | ||
695 | int | |
696 | varobj_list_children (struct varobj *var, struct varobj ***childlist) | |
697 | { | |
698 | struct varobj *child; | |
699 | char *name; | |
700 | int i; | |
701 | ||
702 | /* sanity check: have we been passed a pointer? */ | |
703 | if (childlist == NULL) | |
704 | return -1; | |
705 | ||
706 | *childlist = NULL; | |
707 | ||
708 | if (var->num_children == -1) | |
709 | var->num_children = number_of_children (var); | |
710 | ||
711 | /* List of children */ | |
712 | *childlist = xmalloc ((var->num_children + 1) * sizeof (struct varobj *)); | |
713 | ||
714 | for (i = 0; i < var->num_children; i++) | |
715 | { | |
716 | /* Mark as the end in case we bail out */ | |
717 | *((*childlist) + i) = NULL; | |
718 | ||
719 | /* check if child exists, if not create */ | |
720 | name = name_of_child (var, i); | |
721 | child = child_exists (var, name); | |
722 | if (child == NULL) | |
723 | child = create_child (var, i, name); | |
724 | ||
725 | *((*childlist) + i) = child; | |
726 | } | |
727 | ||
728 | /* End of list is marked by a NULL pointer */ | |
729 | *((*childlist) + i) = NULL; | |
730 | ||
731 | return var->num_children; | |
732 | } | |
733 | ||
734 | /* Obtain the type of an object Variable as a string similar to the one gdb | |
735 | prints on the console */ | |
736 | ||
737 | char * | |
738 | varobj_get_type (struct varobj *var) | |
739 | { | |
30b28db1 | 740 | struct value *val; |
8b93c638 JM |
741 | struct cleanup *old_chain; |
742 | struct ui_file *stb; | |
743 | char *thetype; | |
744 | long length; | |
745 | ||
746 | /* For the "fake" variables, do not return a type. (It's type is | |
747 | NULL, too.) */ | |
748 | if (CPLUS_FAKE_CHILD (var)) | |
749 | return NULL; | |
750 | ||
751 | stb = mem_fileopen (); | |
752 | old_chain = make_cleanup_ui_file_delete (stb); | |
753 | ||
30b28db1 | 754 | /* To print the type, we simply create a zero ``struct value *'' and |
8b93c638 JM |
755 | cast it to our type. We then typeprint this variable. */ |
756 | val = value_zero (var->type, not_lval); | |
df407dfe | 757 | type_print (value_type (val), "", stb, -1); |
8b93c638 JM |
758 | |
759 | thetype = ui_file_xstrdup (stb, &length); | |
760 | do_cleanups (old_chain); | |
761 | return thetype; | |
762 | } | |
763 | ||
1ecb4ee0 DJ |
764 | /* Obtain the type of an object variable. */ |
765 | ||
766 | struct type * | |
767 | varobj_get_gdb_type (struct varobj *var) | |
768 | { | |
769 | return var->type; | |
770 | } | |
771 | ||
8b93c638 JM |
772 | enum varobj_languages |
773 | varobj_get_language (struct varobj *var) | |
774 | { | |
775 | return variable_language (var); | |
776 | } | |
777 | ||
778 | int | |
779 | varobj_get_attributes (struct varobj *var) | |
780 | { | |
781 | int attributes = 0; | |
782 | ||
783 | if (variable_editable (var)) | |
784 | /* FIXME: define masks for attributes */ | |
785 | attributes |= 0x00000001; /* Editable */ | |
786 | ||
787 | return attributes; | |
788 | } | |
789 | ||
790 | char * | |
791 | varobj_get_value (struct varobj *var) | |
792 | { | |
793 | return my_value_of_variable (var); | |
794 | } | |
795 | ||
796 | /* Set the value of an object variable (if it is editable) to the | |
797 | value of the given expression */ | |
798 | /* Note: Invokes functions that can call error() */ | |
799 | ||
800 | int | |
801 | varobj_set_value (struct varobj *var, char *expression) | |
802 | { | |
30b28db1 | 803 | struct value *val; |
8b93c638 | 804 | int offset = 0; |
a6c442d8 | 805 | int error = 0; |
8b93c638 JM |
806 | |
807 | /* The argument "expression" contains the variable's new value. | |
808 | We need to first construct a legal expression for this -- ugh! */ | |
809 | /* Does this cover all the bases? */ | |
810 | struct expression *exp; | |
30b28db1 | 811 | struct value *value; |
8b93c638 JM |
812 | int saved_input_radix = input_radix; |
813 | ||
575bbeb6 | 814 | if (var->value != NULL && variable_editable (var) && !var->error) |
8b93c638 JM |
815 | { |
816 | char *s = expression; | |
817 | int i; | |
8b93c638 JM |
818 | |
819 | input_radix = 10; /* ALWAYS reset to decimal temporarily */ | |
7a24eb7c | 820 | exp = parse_exp_1 (&s, 0, 0); |
8b93c638 JM |
821 | if (!gdb_evaluate_expression (exp, &value)) |
822 | { | |
823 | /* We cannot proceed without a valid expression. */ | |
8038e1e2 | 824 | xfree (exp); |
8b93c638 JM |
825 | return 0; |
826 | } | |
827 | ||
fb9b6b35 JJ |
828 | if (!my_value_equal (var->value, value, &error)) |
829 | var->updated = 1; | |
575bbeb6 | 830 | if (!gdb_value_assign (var->value, value, &val)) |
8a1a0112 | 831 | return 0; |
8b93c638 JM |
832 | value_free (var->value); |
833 | release_value (val); | |
834 | var->value = val; | |
835 | input_radix = saved_input_radix; | |
836 | return 1; | |
837 | } | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
842 | /* Returns a malloc'ed list with all root variable objects */ | |
843 | int | |
844 | varobj_list (struct varobj ***varlist) | |
845 | { | |
846 | struct varobj **cv; | |
847 | struct varobj_root *croot; | |
848 | int mycount = rootcount; | |
849 | ||
850 | /* Alloc (rootcount + 1) entries for the result */ | |
851 | *varlist = xmalloc ((rootcount + 1) * sizeof (struct varobj *)); | |
852 | ||
853 | cv = *varlist; | |
854 | croot = rootlist; | |
855 | while ((croot != NULL) && (mycount > 0)) | |
856 | { | |
857 | *cv = croot->rootvar; | |
858 | mycount--; | |
859 | cv++; | |
860 | croot = croot->next; | |
861 | } | |
862 | /* Mark the end of the list */ | |
863 | *cv = NULL; | |
864 | ||
865 | if (mycount || (croot != NULL)) | |
72330bd6 AC |
866 | warning |
867 | ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)", | |
868 | rootcount, mycount); | |
8b93c638 JM |
869 | |
870 | return rootcount; | |
871 | } | |
872 | ||
873 | /* Update the values for a variable and its children. This is a | |
874 | two-pronged attack. First, re-parse the value for the root's | |
875 | expression to see if it's changed. Then go all the way | |
876 | through its children, reconstructing them and noting if they've | |
877 | changed. | |
73a93a32 JI |
878 | Return value: |
879 | -1 if there was an error updating the varobj | |
880 | -2 if the type changed | |
881 | Otherwise it is the number of children + parent changed | |
8b93c638 | 882 | |
705da579 KS |
883 | Only root variables can be updated... |
884 | ||
885 | NOTE: This function may delete the caller's varobj. If it | |
886 | returns -2, then it has done this and VARP will be modified | |
887 | to point to the new varobj. */ | |
8b93c638 JM |
888 | |
889 | int | |
705da579 | 890 | varobj_update (struct varobj **varp, struct varobj ***changelist) |
8b93c638 JM |
891 | { |
892 | int changed = 0; | |
a6c442d8 | 893 | int error = 0; |
73a93a32 | 894 | int type_changed; |
8b93c638 JM |
895 | int i; |
896 | int vleft; | |
8b93c638 JM |
897 | struct varobj *v; |
898 | struct varobj **cv; | |
2c67cb8b | 899 | struct varobj **templist = NULL; |
30b28db1 | 900 | struct value *new; |
8b93c638 JM |
901 | struct vstack *stack = NULL; |
902 | struct vstack *result = NULL; | |
e64d9b3d MH |
903 | struct frame_id old_fid; |
904 | struct frame_info *fi; | |
8b93c638 JM |
905 | |
906 | /* sanity check: have we been passed a pointer? */ | |
907 | if (changelist == NULL) | |
908 | return -1; | |
909 | ||
910 | /* Only root variables can be updated... */ | |
705da579 | 911 | if ((*varp)->root->rootvar != *varp) |
8b93c638 JM |
912 | /* Not a root var */ |
913 | return -1; | |
914 | ||
915 | /* Save the selected stack frame, since we will need to change it | |
916 | in order to evaluate expressions. */ | |
7a424e99 | 917 | old_fid = get_frame_id (deprecated_selected_frame); |
8b93c638 JM |
918 | |
919 | /* Update the root variable. value_of_root can return NULL | |
920 | if the variable is no longer around, i.e. we stepped out of | |
73a93a32 JI |
921 | the frame in which a local existed. We are letting the |
922 | value_of_root variable dispose of the varobj if the type | |
923 | has changed. */ | |
924 | type_changed = 1; | |
705da579 | 925 | new = value_of_root (varp, &type_changed); |
8b93c638 | 926 | if (new == NULL) |
73a93a32 | 927 | { |
705da579 | 928 | (*varp)->error = 1; |
73a93a32 JI |
929 | return -1; |
930 | } | |
8b93c638 JM |
931 | |
932 | /* Initialize a stack for temporary results */ | |
933 | vpush (&result, NULL); | |
934 | ||
ae093f96 FN |
935 | /* If this is a "use_selected_frame" varobj, and its type has changed, |
936 | them note that it's changed. */ | |
937 | if (type_changed) | |
8b93c638 | 938 | { |
705da579 | 939 | vpush (&result, *varp); |
ae093f96 FN |
940 | changed++; |
941 | } | |
942 | /* If values are not equal, note that it's changed. | |
943 | There a couple of exceptions here, though. | |
944 | We don't want some types to be reported as "changed". */ | |
fb9b6b35 | 945 | else if (type_changeable (*varp) && |
a6c442d8 | 946 | ((*varp)->updated || !my_value_equal ((*varp)->value, new, &error))) |
ae093f96 | 947 | { |
705da579 | 948 | vpush (&result, *varp); |
fb9b6b35 | 949 | (*varp)->updated = 0; |
ae093f96 | 950 | changed++; |
a6c442d8 MK |
951 | /* Its value is going to be updated to NEW. */ |
952 | (*varp)->error = error; | |
8b93c638 | 953 | } |
8b93c638 JM |
954 | |
955 | /* We must always keep around the new value for this root | |
956 | variable expression, or we lose the updated children! */ | |
705da579 KS |
957 | value_free ((*varp)->value); |
958 | (*varp)->value = new; | |
8b93c638 JM |
959 | |
960 | /* Initialize a stack */ | |
961 | vpush (&stack, NULL); | |
962 | ||
963 | /* Push the root's children */ | |
705da579 | 964 | if ((*varp)->children != NULL) |
8b93c638 JM |
965 | { |
966 | struct varobj_child *c; | |
705da579 | 967 | for (c = (*varp)->children; c != NULL; c = c->next) |
8b93c638 JM |
968 | vpush (&stack, c->child); |
969 | } | |
970 | ||
971 | /* Walk through the children, reconstructing them all. */ | |
972 | v = vpop (&stack); | |
973 | while (v != NULL) | |
974 | { | |
975 | /* Push any children */ | |
976 | if (v->children != NULL) | |
977 | { | |
978 | struct varobj_child *c; | |
979 | for (c = v->children; c != NULL; c = c->next) | |
980 | vpush (&stack, c->child); | |
981 | } | |
982 | ||
983 | /* Update this variable */ | |
984 | new = value_of_child (v->parent, v->index); | |
fb9b6b35 | 985 | if (type_changeable (v) && |
a6c442d8 | 986 | (v->updated || !my_value_equal (v->value, new, &error))) |
8b93c638 JM |
987 | { |
988 | /* Note that it's changed */ | |
989 | vpush (&result, v); | |
fb9b6b35 | 990 | v->updated = 0; |
8b93c638 JM |
991 | changed++; |
992 | } | |
a6c442d8 MK |
993 | /* Its value is going to be updated to NEW. */ |
994 | v->error = error; | |
8b93c638 JM |
995 | |
996 | /* We must always keep new values, since children depend on it. */ | |
997 | if (v->value != NULL) | |
998 | value_free (v->value); | |
999 | v->value = new; | |
1000 | ||
1001 | /* Get next child */ | |
1002 | v = vpop (&stack); | |
1003 | } | |
1004 | ||
1005 | /* Alloc (changed + 1) list entries */ | |
1006 | /* FIXME: add a cleanup for the allocated list(s) | |
1007 | because one day the select_frame called below can longjump */ | |
1008 | *changelist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
1009 | if (changed > 1) | |
1010 | { | |
1011 | templist = xmalloc ((changed + 1) * sizeof (struct varobj *)); | |
1012 | cv = templist; | |
1013 | } | |
1014 | else | |
1015 | cv = *changelist; | |
1016 | ||
1017 | /* Copy from result stack to list */ | |
1018 | vleft = changed; | |
1019 | *cv = vpop (&result); | |
1020 | while ((*cv != NULL) && (vleft > 0)) | |
1021 | { | |
1022 | vleft--; | |
1023 | cv++; | |
1024 | *cv = vpop (&result); | |
1025 | } | |
1026 | if (vleft) | |
8a3fe4f8 | 1027 | warning (_("varobj_update: assertion failed - vleft <> 0")); |
8b93c638 JM |
1028 | |
1029 | if (changed > 1) | |
1030 | { | |
1031 | /* Now we revert the order. */ | |
72330bd6 AC |
1032 | for (i = 0; i < changed; i++) |
1033 | *(*changelist + i) = *(templist + changed - 1 - i); | |
8b93c638 JM |
1034 | *(*changelist + changed) = NULL; |
1035 | } | |
1036 | ||
1037 | /* Restore selected frame */ | |
e64d9b3d MH |
1038 | fi = frame_find_by_id (old_fid); |
1039 | if (fi) | |
1040 | select_frame (fi); | |
8b93c638 | 1041 | |
73a93a32 JI |
1042 | if (type_changed) |
1043 | return -2; | |
1044 | else | |
1045 | return changed; | |
8b93c638 JM |
1046 | } |
1047 | \f | |
1048 | ||
1049 | /* Helper functions */ | |
1050 | ||
1051 | /* | |
1052 | * Variable object construction/destruction | |
1053 | */ | |
1054 | ||
1055 | static int | |
fba45db2 KB |
1056 | delete_variable (struct cpstack **resultp, struct varobj *var, |
1057 | int only_children_p) | |
8b93c638 JM |
1058 | { |
1059 | int delcount = 0; | |
1060 | ||
1061 | delete_variable_1 (resultp, &delcount, var, | |
1062 | only_children_p, 1 /* remove_from_parent_p */ ); | |
1063 | ||
1064 | return delcount; | |
1065 | } | |
1066 | ||
1067 | /* Delete the variable object VAR and its children */ | |
1068 | /* IMPORTANT NOTE: If we delete a variable which is a child | |
1069 | and the parent is not removed we dump core. It must be always | |
1070 | initially called with remove_from_parent_p set */ | |
1071 | static void | |
72330bd6 AC |
1072 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
1073 | struct varobj *var, int only_children_p, | |
1074 | int remove_from_parent_p) | |
8b93c638 JM |
1075 | { |
1076 | struct varobj_child *vc; | |
1077 | struct varobj_child *next; | |
1078 | ||
1079 | /* Delete any children of this variable, too. */ | |
1080 | for (vc = var->children; vc != NULL; vc = next) | |
1081 | { | |
1082 | if (!remove_from_parent_p) | |
1083 | vc->child->parent = NULL; | |
1084 | delete_variable_1 (resultp, delcountp, vc->child, 0, only_children_p); | |
1085 | next = vc->next; | |
b8c9b27d | 1086 | xfree (vc); |
8b93c638 JM |
1087 | } |
1088 | ||
1089 | /* if we were called to delete only the children we are done here */ | |
1090 | if (only_children_p) | |
1091 | return; | |
1092 | ||
1093 | /* Otherwise, add it to the list of deleted ones and proceed to do so */ | |
73a93a32 JI |
1094 | /* If the name is null, this is a temporary variable, that has not |
1095 | yet been installed, don't report it, it belongs to the caller... */ | |
1096 | if (var->obj_name != NULL) | |
8b93c638 | 1097 | { |
5b616ba1 | 1098 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
1099 | *delcountp = *delcountp + 1; |
1100 | } | |
1101 | ||
1102 | /* If this variable has a parent, remove it from its parent's list */ | |
1103 | /* OPTIMIZATION: if the parent of this variable is also being deleted, | |
1104 | (as indicated by remove_from_parent_p) we don't bother doing an | |
1105 | expensive list search to find the element to remove when we are | |
1106 | discarding the list afterwards */ | |
72330bd6 | 1107 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 JM |
1108 | { |
1109 | remove_child_from_parent (var->parent, var); | |
1110 | } | |
72330bd6 | 1111 | |
73a93a32 JI |
1112 | if (var->obj_name != NULL) |
1113 | uninstall_variable (var); | |
8b93c638 JM |
1114 | |
1115 | /* Free memory associated with this variable */ | |
1116 | free_variable (var); | |
1117 | } | |
1118 | ||
1119 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ | |
1120 | static int | |
fba45db2 | 1121 | install_variable (struct varobj *var) |
8b93c638 JM |
1122 | { |
1123 | struct vlist *cv; | |
1124 | struct vlist *newvl; | |
1125 | const char *chp; | |
1126 | unsigned int index = 0; | |
1127 | unsigned int i = 1; | |
1128 | ||
1129 | for (chp = var->obj_name; *chp; chp++) | |
1130 | { | |
1131 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1132 | } | |
1133 | ||
1134 | cv = *(varobj_table + index); | |
1135 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1136 | cv = cv->next; | |
1137 | ||
1138 | if (cv != NULL) | |
8a3fe4f8 | 1139 | error (_("Duplicate variable object name")); |
8b93c638 JM |
1140 | |
1141 | /* Add varobj to hash table */ | |
1142 | newvl = xmalloc (sizeof (struct vlist)); | |
1143 | newvl->next = *(varobj_table + index); | |
1144 | newvl->var = var; | |
1145 | *(varobj_table + index) = newvl; | |
1146 | ||
1147 | /* If root, add varobj to root list */ | |
1148 | if (var->root->rootvar == var) | |
1149 | { | |
1150 | /* Add to list of root variables */ | |
1151 | if (rootlist == NULL) | |
1152 | var->root->next = NULL; | |
1153 | else | |
1154 | var->root->next = rootlist; | |
1155 | rootlist = var->root; | |
1156 | rootcount++; | |
1157 | } | |
1158 | ||
1159 | return 1; /* OK */ | |
1160 | } | |
1161 | ||
1162 | /* Unistall the object VAR. */ | |
1163 | static void | |
fba45db2 | 1164 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
1165 | { |
1166 | struct vlist *cv; | |
1167 | struct vlist *prev; | |
1168 | struct varobj_root *cr; | |
1169 | struct varobj_root *prer; | |
1170 | const char *chp; | |
1171 | unsigned int index = 0; | |
1172 | unsigned int i = 1; | |
1173 | ||
1174 | /* Remove varobj from hash table */ | |
1175 | for (chp = var->obj_name; *chp; chp++) | |
1176 | { | |
1177 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
1178 | } | |
1179 | ||
1180 | cv = *(varobj_table + index); | |
1181 | prev = NULL; | |
1182 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
1183 | { | |
1184 | prev = cv; | |
1185 | cv = cv->next; | |
1186 | } | |
1187 | ||
1188 | if (varobjdebug) | |
1189 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
1190 | ||
1191 | if (cv == NULL) | |
1192 | { | |
72330bd6 AC |
1193 | warning |
1194 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
1195 | var->obj_name); | |
8b93c638 JM |
1196 | return; |
1197 | } | |
1198 | ||
1199 | if (prev == NULL) | |
1200 | *(varobj_table + index) = cv->next; | |
1201 | else | |
1202 | prev->next = cv->next; | |
1203 | ||
b8c9b27d | 1204 | xfree (cv); |
8b93c638 JM |
1205 | |
1206 | /* If root, remove varobj from root list */ | |
1207 | if (var->root->rootvar == var) | |
1208 | { | |
1209 | /* Remove from list of root variables */ | |
1210 | if (rootlist == var->root) | |
1211 | rootlist = var->root->next; | |
1212 | else | |
1213 | { | |
1214 | prer = NULL; | |
1215 | cr = rootlist; | |
1216 | while ((cr != NULL) && (cr->rootvar != var)) | |
1217 | { | |
1218 | prer = cr; | |
1219 | cr = cr->next; | |
1220 | } | |
1221 | if (cr == NULL) | |
1222 | { | |
72330bd6 AC |
1223 | warning |
1224 | ("Assertion failed: Could not find varobj \"%s\" in root list", | |
1225 | var->obj_name); | |
8b93c638 JM |
1226 | return; |
1227 | } | |
1228 | if (prer == NULL) | |
1229 | rootlist = NULL; | |
1230 | else | |
1231 | prer->next = cr->next; | |
1232 | } | |
1233 | rootcount--; | |
1234 | } | |
1235 | ||
1236 | } | |
1237 | ||
1238 | /* Does a child with the name NAME exist in VAR? If so, return its data. | |
1239 | If not, return NULL. */ | |
1240 | static struct varobj * | |
1669605f | 1241 | child_exists (struct varobj *var, char *name) |
8b93c638 JM |
1242 | { |
1243 | struct varobj_child *vc; | |
1244 | ||
1245 | for (vc = var->children; vc != NULL; vc = vc->next) | |
1246 | { | |
6e382aa3 | 1247 | if (strcmp (vc->child->name, name) == 0) |
8b93c638 JM |
1248 | return vc->child; |
1249 | } | |
1250 | ||
1251 | return NULL; | |
1252 | } | |
1253 | ||
1254 | /* Create and install a child of the parent of the given name */ | |
1255 | static struct varobj * | |
fba45db2 | 1256 | create_child (struct varobj *parent, int index, char *name) |
8b93c638 JM |
1257 | { |
1258 | struct varobj *child; | |
1259 | char *childs_name; | |
1260 | ||
1261 | child = new_variable (); | |
1262 | ||
1263 | /* name is allocated by name_of_child */ | |
1264 | child->name = name; | |
1265 | child->index = index; | |
1266 | child->value = value_of_child (parent, index); | |
7f19b9a2 | 1267 | if ((!CPLUS_FAKE_CHILD (child) && child->value == NULL) || parent->error) |
8b93c638 JM |
1268 | child->error = 1; |
1269 | child->parent = parent; | |
1270 | child->root = parent->root; | |
b435e160 | 1271 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); |
8b93c638 JM |
1272 | child->obj_name = childs_name; |
1273 | install_variable (child); | |
1274 | ||
1275 | /* Save a pointer to this child in the parent */ | |
1276 | save_child_in_parent (parent, child); | |
1277 | ||
1278 | /* Note the type of this child */ | |
1279 | child->type = type_of_child (child); | |
1280 | ||
1281 | return child; | |
1282 | } | |
1283 | ||
1284 | /* FIXME: This should be a generic add to list */ | |
1285 | /* Save CHILD in the PARENT's data. */ | |
1286 | static void | |
fba45db2 | 1287 | save_child_in_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1288 | { |
1289 | struct varobj_child *vc; | |
1290 | ||
1291 | /* Insert the child at the top */ | |
1292 | vc = parent->children; | |
1293 | parent->children = | |
1294 | (struct varobj_child *) xmalloc (sizeof (struct varobj_child)); | |
1295 | ||
1296 | parent->children->next = vc; | |
1297 | parent->children->child = child; | |
1298 | } | |
1299 | ||
1300 | /* FIXME: This should be a generic remove from list */ | |
1301 | /* Remove the CHILD from the PARENT's list of children. */ | |
1302 | static void | |
fba45db2 | 1303 | remove_child_from_parent (struct varobj *parent, struct varobj *child) |
8b93c638 JM |
1304 | { |
1305 | struct varobj_child *vc, *prev; | |
1306 | ||
1307 | /* Find the child in the parent's list */ | |
1308 | prev = NULL; | |
1309 | for (vc = parent->children; vc != NULL;) | |
1310 | { | |
1311 | if (vc->child == child) | |
1312 | break; | |
1313 | prev = vc; | |
1314 | vc = vc->next; | |
1315 | } | |
1316 | ||
1317 | if (prev == NULL) | |
1318 | parent->children = vc->next; | |
1319 | else | |
1320 | prev->next = vc->next; | |
1321 | ||
1322 | } | |
1323 | \f | |
1324 | ||
1325 | /* | |
1326 | * Miscellaneous utility functions. | |
1327 | */ | |
1328 | ||
1329 | /* Allocate memory and initialize a new variable */ | |
1330 | static struct varobj * | |
1331 | new_variable (void) | |
1332 | { | |
1333 | struct varobj *var; | |
1334 | ||
1335 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
1336 | var->name = NULL; | |
1337 | var->obj_name = NULL; | |
1338 | var->index = -1; | |
1339 | var->type = NULL; | |
1340 | var->value = NULL; | |
1341 | var->error = 0; | |
1342 | var->num_children = -1; | |
1343 | var->parent = NULL; | |
1344 | var->children = NULL; | |
1345 | var->format = 0; | |
1346 | var->root = NULL; | |
fb9b6b35 | 1347 | var->updated = 0; |
8b93c638 JM |
1348 | |
1349 | return var; | |
1350 | } | |
1351 | ||
1352 | /* Allocate memory and initialize a new root variable */ | |
1353 | static struct varobj * | |
1354 | new_root_variable (void) | |
1355 | { | |
1356 | struct varobj *var = new_variable (); | |
1357 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));; | |
1358 | var->root->lang = NULL; | |
1359 | var->root->exp = NULL; | |
1360 | var->root->valid_block = NULL; | |
7a424e99 | 1361 | var->root->frame = null_frame_id; |
73a93a32 | 1362 | var->root->use_selected_frame = 0; |
8b93c638 JM |
1363 | var->root->rootvar = NULL; |
1364 | ||
1365 | return var; | |
1366 | } | |
1367 | ||
1368 | /* Free any allocated memory associated with VAR. */ | |
1369 | static void | |
fba45db2 | 1370 | free_variable (struct varobj *var) |
8b93c638 JM |
1371 | { |
1372 | /* Free the expression if this is a root variable. */ | |
1373 | if (var->root->rootvar == var) | |
1374 | { | |
96c1eda2 | 1375 | free_current_contents (&var->root->exp); |
8038e1e2 | 1376 | xfree (var->root); |
8b93c638 JM |
1377 | } |
1378 | ||
8038e1e2 AC |
1379 | xfree (var->name); |
1380 | xfree (var->obj_name); | |
1381 | xfree (var); | |
8b93c638 JM |
1382 | } |
1383 | ||
74b7792f AC |
1384 | static void |
1385 | do_free_variable_cleanup (void *var) | |
1386 | { | |
1387 | free_variable (var); | |
1388 | } | |
1389 | ||
1390 | static struct cleanup * | |
1391 | make_cleanup_free_variable (struct varobj *var) | |
1392 | { | |
1393 | return make_cleanup (do_free_variable_cleanup, var); | |
1394 | } | |
1395 | ||
6766a268 DJ |
1396 | /* This returns the type of the variable. It also skips past typedefs |
1397 | to return the real type of the variable. | |
94b66fa7 KS |
1398 | |
1399 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1400 | except within get_target_type and get_type. */ | |
8b93c638 | 1401 | static struct type * |
fba45db2 | 1402 | get_type (struct varobj *var) |
8b93c638 JM |
1403 | { |
1404 | struct type *type; | |
1405 | type = var->type; | |
1406 | ||
6766a268 DJ |
1407 | if (type != NULL) |
1408 | type = check_typedef (type); | |
8b93c638 JM |
1409 | |
1410 | return type; | |
1411 | } | |
1412 | ||
1413 | /* This returns the type of the variable, dereferencing pointers, too. */ | |
1414 | static struct type * | |
fba45db2 | 1415 | get_type_deref (struct varobj *var) |
8b93c638 JM |
1416 | { |
1417 | struct type *type; | |
1418 | ||
1419 | type = get_type (var); | |
1420 | ||
1421 | if (type != NULL && (TYPE_CODE (type) == TYPE_CODE_PTR | |
1422 | || TYPE_CODE (type) == TYPE_CODE_REF)) | |
1423 | type = get_target_type (type); | |
1424 | ||
1425 | return type; | |
1426 | } | |
1427 | ||
1428 | /* This returns the target type (or NULL) of TYPE, also skipping | |
94b66fa7 KS |
1429 | past typedefs, just like get_type (). |
1430 | ||
1431 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
1432 | except within get_target_type and get_type. */ | |
8b93c638 | 1433 | static struct type * |
fba45db2 | 1434 | get_target_type (struct type *type) |
8b93c638 JM |
1435 | { |
1436 | if (type != NULL) | |
1437 | { | |
1438 | type = TYPE_TARGET_TYPE (type); | |
6766a268 DJ |
1439 | if (type != NULL) |
1440 | type = check_typedef (type); | |
8b93c638 JM |
1441 | } |
1442 | ||
1443 | return type; | |
1444 | } | |
1445 | ||
1446 | /* What is the default display for this variable? We assume that | |
1447 | everything is "natural". Any exceptions? */ | |
1448 | static enum varobj_display_formats | |
fba45db2 | 1449 | variable_default_display (struct varobj *var) |
8b93c638 JM |
1450 | { |
1451 | return FORMAT_NATURAL; | |
1452 | } | |
1453 | ||
a6c442d8 MK |
1454 | /* This function is similar to GDB's value_contents_equal, except that |
1455 | this one is "safe"; it never longjmps. It determines if the VAL1's | |
1456 | value is the same as VAL2. If for some reason the value of VAR2 | |
1457 | can't be established, *ERROR2 is set to non-zero. */ | |
1458 | ||
8b93c638 | 1459 | static int |
4dd04433 | 1460 | my_value_equal (struct value *val1, struct value *volatile val2, int *error2) |
8b93c638 | 1461 | { |
71fff37b | 1462 | volatile struct gdb_exception except; |
8b93c638 | 1463 | |
a6c442d8 | 1464 | /* As a special case, if both are null, we say they're equal. */ |
8b93c638 JM |
1465 | if (val1 == NULL && val2 == NULL) |
1466 | return 1; | |
1467 | else if (val1 == NULL || val2 == NULL) | |
1468 | return 0; | |
1469 | ||
a6c442d8 MK |
1470 | /* The contents of VAL1 are supposed to be known. */ |
1471 | gdb_assert (!value_lazy (val1)); | |
8b93c638 | 1472 | |
a6c442d8 MK |
1473 | /* Make sure we also know the contents of VAL2. */ |
1474 | val2 = coerce_array (val2); | |
1475 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
8b93c638 | 1476 | { |
a6c442d8 MK |
1477 | if (value_lazy (val2)) |
1478 | value_fetch_lazy (val2); | |
1479 | } | |
1480 | if (except.reason < 0) | |
1481 | { | |
1482 | *error2 = 1; | |
1483 | return 0; | |
8b93c638 | 1484 | } |
a6c442d8 | 1485 | gdb_assert (!value_lazy (val2)); |
8b93c638 | 1486 | |
a6c442d8 | 1487 | return value_contents_equal (val1, val2); |
8b93c638 JM |
1488 | } |
1489 | ||
1490 | /* FIXME: The following should be generic for any pointer */ | |
1491 | static void | |
fba45db2 | 1492 | vpush (struct vstack **pstack, struct varobj *var) |
8b93c638 JM |
1493 | { |
1494 | struct vstack *s; | |
1495 | ||
1496 | s = (struct vstack *) xmalloc (sizeof (struct vstack)); | |
1497 | s->var = var; | |
1498 | s->next = *pstack; | |
1499 | *pstack = s; | |
1500 | } | |
1501 | ||
1502 | /* FIXME: The following should be generic for any pointer */ | |
1503 | static struct varobj * | |
fba45db2 | 1504 | vpop (struct vstack **pstack) |
8b93c638 JM |
1505 | { |
1506 | struct vstack *s; | |
1507 | struct varobj *v; | |
1508 | ||
1509 | if ((*pstack)->var == NULL && (*pstack)->next == NULL) | |
1510 | return NULL; | |
1511 | ||
1512 | s = *pstack; | |
1513 | v = s->var; | |
1514 | *pstack = (*pstack)->next; | |
b8c9b27d | 1515 | xfree (s); |
8b93c638 JM |
1516 | |
1517 | return v; | |
1518 | } | |
1519 | ||
1520 | /* FIXME: The following should be generic for any pointer */ | |
1521 | static void | |
fba45db2 | 1522 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
1523 | { |
1524 | struct cpstack *s; | |
1525 | ||
1526 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
1527 | s->name = name; | |
1528 | s->next = *pstack; | |
1529 | *pstack = s; | |
1530 | } | |
1531 | ||
1532 | /* FIXME: The following should be generic for any pointer */ | |
1533 | static char * | |
fba45db2 | 1534 | cppop (struct cpstack **pstack) |
8b93c638 JM |
1535 | { |
1536 | struct cpstack *s; | |
1537 | char *v; | |
1538 | ||
1539 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
1540 | return NULL; | |
1541 | ||
1542 | s = *pstack; | |
1543 | v = s->name; | |
1544 | *pstack = (*pstack)->next; | |
b8c9b27d | 1545 | xfree (s); |
8b93c638 JM |
1546 | |
1547 | return v; | |
1548 | } | |
1549 | \f | |
1550 | /* | |
1551 | * Language-dependencies | |
1552 | */ | |
1553 | ||
1554 | /* Common entry points */ | |
1555 | ||
1556 | /* Get the language of variable VAR. */ | |
1557 | static enum varobj_languages | |
fba45db2 | 1558 | variable_language (struct varobj *var) |
8b93c638 JM |
1559 | { |
1560 | enum varobj_languages lang; | |
1561 | ||
1562 | switch (var->root->exp->language_defn->la_language) | |
1563 | { | |
1564 | default: | |
1565 | case language_c: | |
1566 | lang = vlang_c; | |
1567 | break; | |
1568 | case language_cplus: | |
1569 | lang = vlang_cplus; | |
1570 | break; | |
1571 | case language_java: | |
1572 | lang = vlang_java; | |
1573 | break; | |
1574 | } | |
1575 | ||
1576 | return lang; | |
1577 | } | |
1578 | ||
1579 | /* Return the number of children for a given variable. | |
1580 | The result of this function is defined by the language | |
1581 | implementation. The number of children returned by this function | |
1582 | is the number of children that the user will see in the variable | |
1583 | display. */ | |
1584 | static int | |
fba45db2 | 1585 | number_of_children (struct varobj *var) |
8b93c638 JM |
1586 | { |
1587 | return (*var->root->lang->number_of_children) (var);; | |
1588 | } | |
1589 | ||
1590 | /* What is the expression for the root varobj VAR? Returns a malloc'd string. */ | |
1591 | static char * | |
fba45db2 | 1592 | name_of_variable (struct varobj *var) |
8b93c638 JM |
1593 | { |
1594 | return (*var->root->lang->name_of_variable) (var); | |
1595 | } | |
1596 | ||
1597 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */ | |
1598 | static char * | |
fba45db2 | 1599 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
1600 | { |
1601 | return (*var->root->lang->name_of_child) (var, index); | |
1602 | } | |
1603 | ||
30b28db1 | 1604 | /* What is the ``struct value *'' of the root variable VAR? |
73a93a32 JI |
1605 | TYPE_CHANGED controls what to do if the type of a |
1606 | use_selected_frame = 1 variable changes. On input, | |
1607 | TYPE_CHANGED = 1 means discard the old varobj, and replace | |
1608 | it with this one. TYPE_CHANGED = 0 means leave it around. | |
1609 | NB: In both cases, var_handle will point to the new varobj, | |
1610 | so if you use TYPE_CHANGED = 0, you will have to stash the | |
1611 | old varobj pointer away somewhere before calling this. | |
1612 | On return, TYPE_CHANGED will be 1 if the type has changed, and | |
1613 | 0 otherwise. */ | |
30b28db1 | 1614 | static struct value * |
fba45db2 | 1615 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 1616 | { |
73a93a32 JI |
1617 | struct varobj *var; |
1618 | ||
1619 | if (var_handle == NULL) | |
1620 | return NULL; | |
1621 | ||
1622 | var = *var_handle; | |
1623 | ||
1624 | /* This should really be an exception, since this should | |
1625 | only get called with a root variable. */ | |
1626 | ||
1627 | if (var->root->rootvar != var) | |
1628 | return NULL; | |
1629 | ||
1630 | if (var->root->use_selected_frame) | |
1631 | { | |
1632 | struct varobj *tmp_var; | |
1633 | char *old_type, *new_type; | |
1634 | old_type = varobj_get_type (var); | |
1635 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
1636 | USE_SELECTED_FRAME); | |
1637 | if (tmp_var == NULL) | |
1638 | { | |
1639 | return NULL; | |
1640 | } | |
1641 | new_type = varobj_get_type (tmp_var); | |
72330bd6 | 1642 | if (strcmp (old_type, new_type) == 0) |
73a93a32 JI |
1643 | { |
1644 | varobj_delete (tmp_var, NULL, 0); | |
1645 | *type_changed = 0; | |
1646 | } | |
1647 | else | |
1648 | { | |
1649 | if (*type_changed) | |
1650 | { | |
72330bd6 | 1651 | tmp_var->obj_name = |
73a93a32 | 1652 | savestring (var->obj_name, strlen (var->obj_name)); |
f7635dd9 | 1653 | varobj_delete (var, NULL, 0); |
73a93a32 JI |
1654 | } |
1655 | else | |
1656 | { | |
72330bd6 | 1657 | tmp_var->obj_name = varobj_gen_name (); |
73a93a32 JI |
1658 | } |
1659 | install_variable (tmp_var); | |
1660 | *var_handle = tmp_var; | |
705da579 | 1661 | var = *var_handle; |
73a93a32 JI |
1662 | *type_changed = 1; |
1663 | } | |
1664 | } | |
1665 | else | |
1666 | { | |
1667 | *type_changed = 0; | |
1668 | } | |
1669 | ||
1670 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
1671 | } |
1672 | ||
30b28db1 AC |
1673 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
1674 | static struct value * | |
fba45db2 | 1675 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 1676 | { |
30b28db1 | 1677 | struct value *value; |
8b93c638 JM |
1678 | |
1679 | value = (*parent->root->lang->value_of_child) (parent, index); | |
1680 | ||
1681 | /* If we're being lazy, fetch the real value of the variable. */ | |
d69fe07e | 1682 | if (value != NULL && value_lazy (value)) |
575bbeb6 KS |
1683 | { |
1684 | /* If we fail to fetch the value of the child, return | |
7f19b9a2 AC |
1685 | NULL so that callers notice that we're leaving an |
1686 | error message. */ | |
575bbeb6 KS |
1687 | if (!gdb_value_fetch_lazy (value)) |
1688 | value = NULL; | |
1689 | } | |
8b93c638 JM |
1690 | |
1691 | return value; | |
1692 | } | |
1693 | ||
1694 | /* What is the type of VAR? */ | |
1695 | static struct type * | |
fba45db2 | 1696 | type_of_child (struct varobj *var) |
8b93c638 JM |
1697 | { |
1698 | ||
1699 | /* If the child had no evaluation errors, var->value | |
1700 | will be non-NULL and contain a valid type. */ | |
1701 | if (var->value != NULL) | |
df407dfe | 1702 | return value_type (var->value); |
8b93c638 JM |
1703 | |
1704 | /* Otherwise, we must compute the type. */ | |
1705 | return (*var->root->lang->type_of_child) (var->parent, var->index); | |
1706 | } | |
1707 | ||
1708 | /* Is this variable editable? Use the variable's type to make | |
1709 | this determination. */ | |
1710 | static int | |
fba45db2 | 1711 | variable_editable (struct varobj *var) |
8b93c638 JM |
1712 | { |
1713 | return (*var->root->lang->variable_editable) (var); | |
1714 | } | |
1715 | ||
1716 | /* GDB already has a command called "value_of_variable". Sigh. */ | |
1717 | static char * | |
fba45db2 | 1718 | my_value_of_variable (struct varobj *var) |
8b93c638 JM |
1719 | { |
1720 | return (*var->root->lang->value_of_variable) (var); | |
1721 | } | |
1722 | ||
1723 | /* Is VAR something that can change? Depending on language, | |
1724 | some variable's values never change. For example, | |
1725 | struct and unions never change values. */ | |
1726 | static int | |
fba45db2 | 1727 | type_changeable (struct varobj *var) |
8b93c638 JM |
1728 | { |
1729 | int r; | |
1730 | struct type *type; | |
1731 | ||
1732 | if (CPLUS_FAKE_CHILD (var)) | |
1733 | return 0; | |
1734 | ||
1735 | type = get_type (var); | |
1736 | ||
1737 | switch (TYPE_CODE (type)) | |
1738 | { | |
72330bd6 AC |
1739 | case TYPE_CODE_STRUCT: |
1740 | case TYPE_CODE_UNION: | |
1741 | case TYPE_CODE_ARRAY: | |
1742 | r = 0; | |
1743 | break; | |
8b93c638 | 1744 | |
72330bd6 AC |
1745 | default: |
1746 | r = 1; | |
8b93c638 JM |
1747 | } |
1748 | ||
1749 | return r; | |
1750 | } | |
1751 | ||
1752 | /* C */ | |
1753 | static int | |
fba45db2 | 1754 | c_number_of_children (struct varobj *var) |
8b93c638 JM |
1755 | { |
1756 | struct type *type; | |
1757 | struct type *target; | |
1758 | int children; | |
1759 | ||
1760 | type = get_type (var); | |
1761 | target = get_target_type (type); | |
1762 | children = 0; | |
1763 | ||
1764 | switch (TYPE_CODE (type)) | |
1765 | { | |
1766 | case TYPE_CODE_ARRAY: | |
1767 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
72330bd6 | 1768 | && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED) |
8b93c638 JM |
1769 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
1770 | else | |
1771 | children = -1; | |
1772 | break; | |
1773 | ||
1774 | case TYPE_CODE_STRUCT: | |
1775 | case TYPE_CODE_UNION: | |
1776 | children = TYPE_NFIELDS (type); | |
1777 | break; | |
1778 | ||
1779 | case TYPE_CODE_PTR: | |
1780 | /* This is where things get compilcated. All pointers have one child. | |
1781 | Except, of course, for struct and union ptr, which we automagically | |
0755e6c1 FN |
1782 | dereference for the user and function ptrs, which have no children. |
1783 | We also don't dereference void* as we don't know what to show. | |
1784 | We can show char* so we allow it to be dereferenced. If you decide | |
1785 | to test for it, please mind that a little magic is necessary to | |
1786 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
1787 | TYPE_NAME == "char" */ | |
1788 | ||
8b93c638 JM |
1789 | switch (TYPE_CODE (target)) |
1790 | { | |
1791 | case TYPE_CODE_STRUCT: | |
1792 | case TYPE_CODE_UNION: | |
1793 | children = TYPE_NFIELDS (target); | |
1794 | break; | |
1795 | ||
1796 | case TYPE_CODE_FUNC: | |
0755e6c1 | 1797 | case TYPE_CODE_VOID: |
8b93c638 JM |
1798 | children = 0; |
1799 | break; | |
1800 | ||
1801 | default: | |
0755e6c1 | 1802 | children = 1; |
8b93c638 JM |
1803 | } |
1804 | break; | |
1805 | ||
1806 | default: | |
1807 | /* Other types have no children */ | |
1808 | break; | |
1809 | } | |
1810 | ||
1811 | return children; | |
1812 | } | |
1813 | ||
1814 | static char * | |
fba45db2 | 1815 | c_name_of_variable (struct varobj *parent) |
8b93c638 JM |
1816 | { |
1817 | return savestring (parent->name, strlen (parent->name)); | |
1818 | } | |
1819 | ||
1820 | static char * | |
fba45db2 | 1821 | c_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1822 | { |
1823 | struct type *type; | |
1824 | struct type *target; | |
1825 | char *name; | |
1826 | char *string; | |
1827 | ||
1828 | type = get_type (parent); | |
1829 | target = get_target_type (type); | |
1830 | ||
1831 | switch (TYPE_CODE (type)) | |
1832 | { | |
1833 | case TYPE_CODE_ARRAY: | |
7a24eb7c NR |
1834 | name = xstrprintf ("%d", index |
1835 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type))); | |
8b93c638 JM |
1836 | break; |
1837 | ||
1838 | case TYPE_CODE_STRUCT: | |
1839 | case TYPE_CODE_UNION: | |
1840 | string = TYPE_FIELD_NAME (type, index); | |
1841 | name = savestring (string, strlen (string)); | |
1842 | break; | |
1843 | ||
1844 | case TYPE_CODE_PTR: | |
1845 | switch (TYPE_CODE (target)) | |
1846 | { | |
1847 | case TYPE_CODE_STRUCT: | |
1848 | case TYPE_CODE_UNION: | |
1849 | string = TYPE_FIELD_NAME (target, index); | |
1850 | name = savestring (string, strlen (string)); | |
1851 | break; | |
1852 | ||
1853 | default: | |
b435e160 | 1854 | name = xstrprintf ("*%s", parent->name); |
8b93c638 JM |
1855 | break; |
1856 | } | |
1857 | break; | |
1858 | ||
1859 | default: | |
1860 | /* This should not happen */ | |
1861 | name = xstrdup ("???"); | |
1862 | } | |
1863 | ||
1864 | return name; | |
1865 | } | |
1866 | ||
30b28db1 | 1867 | static struct value * |
fba45db2 | 1868 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 1869 | { |
30b28db1 | 1870 | struct value *new_val; |
73a93a32 | 1871 | struct varobj *var = *var_handle; |
8b93c638 JM |
1872 | struct frame_info *fi; |
1873 | int within_scope; | |
1874 | ||
73a93a32 JI |
1875 | /* Only root variables can be updated... */ |
1876 | if (var->root->rootvar != var) | |
1877 | /* Not a root var */ | |
1878 | return NULL; | |
1879 | ||
72330bd6 | 1880 | |
8b93c638 JM |
1881 | /* Determine whether the variable is still around. */ |
1882 | if (var->root->valid_block == NULL) | |
1883 | within_scope = 1; | |
1884 | else | |
1885 | { | |
1886 | reinit_frame_cache (); | |
e64d9b3d | 1887 | fi = frame_find_by_id (var->root->frame); |
8b93c638 JM |
1888 | within_scope = fi != NULL; |
1889 | /* FIXME: select_frame could fail */ | |
1890 | if (within_scope) | |
0f7d239c | 1891 | select_frame (fi); |
8b93c638 | 1892 | } |
72330bd6 | 1893 | |
8b93c638 JM |
1894 | if (within_scope) |
1895 | { | |
73a93a32 | 1896 | /* We need to catch errors here, because if evaluate |
72330bd6 AC |
1897 | expression fails we just want to make val->error = 1 and |
1898 | go on */ | |
8b93c638 JM |
1899 | if (gdb_evaluate_expression (var->root->exp, &new_val)) |
1900 | { | |
d69fe07e | 1901 | if (value_lazy (new_val)) |
8b93c638 | 1902 | { |
73a93a32 | 1903 | /* We need to catch errors because if |
72330bd6 AC |
1904 | value_fetch_lazy fails we still want to continue |
1905 | (after making val->error = 1) */ | |
0fd88904 AC |
1906 | /* FIXME: Shouldn't be using value_contents()? The |
1907 | comment on value_fetch_lazy() says it is only called | |
1908 | from the macro... */ | |
8b93c638 JM |
1909 | if (!gdb_value_fetch_lazy (new_val)) |
1910 | var->error = 1; | |
1911 | else | |
1912 | var->error = 0; | |
1913 | } | |
1914 | } | |
1915 | else | |
1916 | var->error = 1; | |
72330bd6 | 1917 | |
8b93c638 JM |
1918 | release_value (new_val); |
1919 | return new_val; | |
1920 | } | |
1921 | ||
1922 | return NULL; | |
1923 | } | |
1924 | ||
30b28db1 | 1925 | static struct value * |
fba45db2 | 1926 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 1927 | { |
30b28db1 AC |
1928 | struct value *value; |
1929 | struct value *temp; | |
1930 | struct value *indval; | |
8b93c638 JM |
1931 | struct type *type, *target; |
1932 | char *name; | |
7a24eb7c | 1933 | int real_index; |
8b93c638 JM |
1934 | |
1935 | type = get_type (parent); | |
1936 | target = get_target_type (type); | |
1937 | name = name_of_child (parent, index); | |
1938 | temp = parent->value; | |
1939 | value = NULL; | |
1940 | ||
1941 | if (temp != NULL) | |
1942 | { | |
1943 | switch (TYPE_CODE (type)) | |
1944 | { | |
1945 | case TYPE_CODE_ARRAY: | |
7a24eb7c | 1946 | real_index = index + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)); |
8310b29b | 1947 | #if 0 |
72330bd6 | 1948 | /* This breaks if the array lives in a (vector) register. */ |
7a24eb7c | 1949 | value = value_slice (temp, real_index, 1); |
8b93c638 JM |
1950 | temp = value_coerce_array (value); |
1951 | gdb_value_ind (temp, &value); | |
8310b29b | 1952 | #else |
7a24eb7c | 1953 | indval = value_from_longest (builtin_type_int, (LONGEST) real_index); |
8310b29b FN |
1954 | gdb_value_subscript (temp, indval, &value); |
1955 | #endif | |
8b93c638 JM |
1956 | break; |
1957 | ||
1958 | case TYPE_CODE_STRUCT: | |
1959 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1960 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1961 | "vstructure"); | |
8b93c638 JM |
1962 | break; |
1963 | ||
1964 | case TYPE_CODE_PTR: | |
1965 | switch (TYPE_CODE (target)) | |
1966 | { | |
1967 | case TYPE_CODE_STRUCT: | |
1968 | case TYPE_CODE_UNION: | |
7f19b9a2 AC |
1969 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
1970 | "vstructure"); | |
8b93c638 JM |
1971 | break; |
1972 | ||
1973 | default: | |
1974 | gdb_value_ind (temp, &value); | |
1975 | break; | |
1976 | } | |
1977 | break; | |
1978 | ||
1979 | default: | |
1980 | break; | |
1981 | } | |
1982 | } | |
1983 | ||
1984 | if (value != NULL) | |
1985 | release_value (value); | |
1986 | ||
5bbc1a8e | 1987 | xfree (name); |
8b93c638 JM |
1988 | return value; |
1989 | } | |
1990 | ||
1991 | static struct type * | |
fba45db2 | 1992 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
1993 | { |
1994 | struct type *type; | |
1995 | char *name = name_of_child (parent, index); | |
1996 | ||
1997 | switch (TYPE_CODE (parent->type)) | |
1998 | { | |
1999 | case TYPE_CODE_ARRAY: | |
94b66fa7 | 2000 | type = get_target_type (parent->type); |
8b93c638 JM |
2001 | break; |
2002 | ||
2003 | case TYPE_CODE_STRUCT: | |
2004 | case TYPE_CODE_UNION: | |
2005 | type = lookup_struct_elt_type (parent->type, name, 0); | |
2006 | break; | |
2007 | ||
2008 | case TYPE_CODE_PTR: | |
94b66fa7 | 2009 | switch (TYPE_CODE (get_target_type (parent->type))) |
8b93c638 JM |
2010 | { |
2011 | case TYPE_CODE_STRUCT: | |
2012 | case TYPE_CODE_UNION: | |
2013 | type = lookup_struct_elt_type (parent->type, name, 0); | |
2014 | break; | |
2015 | ||
2016 | default: | |
94b66fa7 | 2017 | type = get_target_type (parent->type); |
8b93c638 JM |
2018 | break; |
2019 | } | |
2020 | break; | |
2021 | ||
2022 | default: | |
2023 | /* This should not happen as only the above types have children */ | |
8a3fe4f8 | 2024 | warning (_("Child of parent whose type does not allow children")); |
8b93c638 JM |
2025 | /* FIXME: Can we still go on? */ |
2026 | type = NULL; | |
2027 | break; | |
2028 | } | |
2029 | ||
5bbc1a8e | 2030 | xfree (name); |
8b93c638 JM |
2031 | return type; |
2032 | } | |
2033 | ||
2034 | static int | |
fba45db2 | 2035 | c_variable_editable (struct varobj *var) |
8b93c638 JM |
2036 | { |
2037 | switch (TYPE_CODE (get_type (var))) | |
2038 | { | |
2039 | case TYPE_CODE_STRUCT: | |
2040 | case TYPE_CODE_UNION: | |
2041 | case TYPE_CODE_ARRAY: | |
2042 | case TYPE_CODE_FUNC: | |
2043 | case TYPE_CODE_MEMBER: | |
2044 | case TYPE_CODE_METHOD: | |
2045 | return 0; | |
2046 | break; | |
2047 | ||
2048 | default: | |
2049 | return 1; | |
2050 | break; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | static char * | |
fba45db2 | 2055 | c_value_of_variable (struct varobj *var) |
8b93c638 | 2056 | { |
14b3d9c9 JB |
2057 | /* BOGUS: if val_print sees a struct/class, or a reference to one, |
2058 | it will print out its children instead of "{...}". So we need to | |
2059 | catch that case explicitly. */ | |
2060 | struct type *type = get_type (var); | |
e64d9b3d | 2061 | |
14b3d9c9 JB |
2062 | /* Strip top-level references. */ |
2063 | while (TYPE_CODE (type) == TYPE_CODE_REF) | |
2064 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
2065 | ||
2066 | switch (TYPE_CODE (type)) | |
8b93c638 JM |
2067 | { |
2068 | case TYPE_CODE_STRUCT: | |
2069 | case TYPE_CODE_UNION: | |
2070 | return xstrdup ("{...}"); | |
2071 | /* break; */ | |
2072 | ||
2073 | case TYPE_CODE_ARRAY: | |
2074 | { | |
e64d9b3d | 2075 | char *number; |
b435e160 | 2076 | number = xstrprintf ("[%d]", var->num_children); |
e64d9b3d | 2077 | return (number); |
8b93c638 JM |
2078 | } |
2079 | /* break; */ | |
2080 | ||
2081 | default: | |
2082 | { | |
575bbeb6 KS |
2083 | if (var->value == NULL) |
2084 | { | |
2085 | /* This can happen if we attempt to get the value of a struct | |
2086 | member when the parent is an invalid pointer. This is an | |
2087 | error condition, so we should tell the caller. */ | |
2088 | return NULL; | |
2089 | } | |
2090 | else | |
2091 | { | |
e64d9b3d MH |
2092 | long dummy; |
2093 | struct ui_file *stb = mem_fileopen (); | |
2094 | struct cleanup *old_chain = make_cleanup_ui_file_delete (stb); | |
2095 | char *thevalue; | |
2096 | ||
d69fe07e | 2097 | if (value_lazy (var->value)) |
575bbeb6 | 2098 | gdb_value_fetch_lazy (var->value); |
806048c6 DJ |
2099 | common_val_print (var->value, stb, |
2100 | format_code[(int) var->format], 1, 0, 0); | |
575bbeb6 KS |
2101 | thevalue = ui_file_xstrdup (stb, &dummy); |
2102 | do_cleanups (old_chain); | |
8b93c638 JM |
2103 | return thevalue; |
2104 | } | |
e64d9b3d | 2105 | } |
8b93c638 JM |
2106 | } |
2107 | } | |
2108 | \f | |
2109 | ||
2110 | /* C++ */ | |
2111 | ||
2112 | static int | |
fba45db2 | 2113 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
2114 | { |
2115 | struct type *type; | |
2116 | int children, dont_know; | |
2117 | ||
2118 | dont_know = 1; | |
2119 | children = 0; | |
2120 | ||
2121 | if (!CPLUS_FAKE_CHILD (var)) | |
2122 | { | |
2123 | type = get_type_deref (var); | |
2124 | ||
2125 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 2126 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
2127 | { |
2128 | int kids[3]; | |
2129 | ||
2130 | cplus_class_num_children (type, kids); | |
2131 | if (kids[v_public] != 0) | |
2132 | children++; | |
2133 | if (kids[v_private] != 0) | |
2134 | children++; | |
2135 | if (kids[v_protected] != 0) | |
2136 | children++; | |
2137 | ||
2138 | /* Add any baseclasses */ | |
2139 | children += TYPE_N_BASECLASSES (type); | |
2140 | dont_know = 0; | |
2141 | ||
2142 | /* FIXME: save children in var */ | |
2143 | } | |
2144 | } | |
2145 | else | |
2146 | { | |
2147 | int kids[3]; | |
2148 | ||
2149 | type = get_type_deref (var->parent); | |
2150 | ||
2151 | cplus_class_num_children (type, kids); | |
6e382aa3 | 2152 | if (strcmp (var->name, "public") == 0) |
8b93c638 | 2153 | children = kids[v_public]; |
6e382aa3 | 2154 | else if (strcmp (var->name, "private") == 0) |
8b93c638 JM |
2155 | children = kids[v_private]; |
2156 | else | |
2157 | children = kids[v_protected]; | |
2158 | dont_know = 0; | |
2159 | } | |
2160 | ||
2161 | if (dont_know) | |
2162 | children = c_number_of_children (var); | |
2163 | ||
2164 | return children; | |
2165 | } | |
2166 | ||
2167 | /* Compute # of public, private, and protected variables in this class. | |
2168 | That means we need to descend into all baseclasses and find out | |
2169 | how many are there, too. */ | |
2170 | static void | |
1669605f | 2171 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 JM |
2172 | { |
2173 | int i; | |
2174 | ||
2175 | children[v_public] = 0; | |
2176 | children[v_private] = 0; | |
2177 | children[v_protected] = 0; | |
2178 | ||
2179 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) | |
2180 | { | |
2181 | /* If we have a virtual table pointer, omit it. */ | |
72330bd6 | 2182 | if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i) |
8b93c638 JM |
2183 | continue; |
2184 | ||
2185 | if (TYPE_FIELD_PROTECTED (type, i)) | |
2186 | children[v_protected]++; | |
2187 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
2188 | children[v_private]++; | |
2189 | else | |
2190 | children[v_public]++; | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | static char * | |
fba45db2 | 2195 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2196 | { |
2197 | return c_name_of_variable (parent); | |
2198 | } | |
2199 | ||
2200 | static char * | |
fba45db2 | 2201 | cplus_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2202 | { |
2203 | char *name; | |
2204 | struct type *type; | |
8b93c638 JM |
2205 | |
2206 | if (CPLUS_FAKE_CHILD (parent)) | |
2207 | { | |
2208 | /* Looking for children of public, private, or protected. */ | |
2209 | type = get_type_deref (parent->parent); | |
2210 | } | |
2211 | else | |
2212 | type = get_type_deref (parent); | |
2213 | ||
2214 | name = NULL; | |
2215 | switch (TYPE_CODE (type)) | |
2216 | { | |
2217 | case TYPE_CODE_STRUCT: | |
2218 | case TYPE_CODE_UNION: | |
8b93c638 JM |
2219 | if (CPLUS_FAKE_CHILD (parent)) |
2220 | { | |
6e382aa3 JJ |
2221 | /* The fields of the class type are ordered as they |
2222 | appear in the class. We are given an index for a | |
2223 | particular access control type ("public","protected", | |
2224 | or "private"). We must skip over fields that don't | |
2225 | have the access control we are looking for to properly | |
2226 | find the indexed field. */ | |
2227 | int type_index = TYPE_N_BASECLASSES (type); | |
2228 | if (strcmp (parent->name, "private") == 0) | |
2229 | { | |
2230 | while (index >= 0) | |
2231 | { | |
2232 | if (TYPE_VPTR_BASETYPE (type) == type | |
2233 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2234 | ; /* ignore vptr */ | |
2235 | else if (TYPE_FIELD_PRIVATE (type, type_index)) | |
2236 | --index; | |
2237 | ++type_index; | |
2238 | } | |
2239 | --type_index; | |
2240 | } | |
2241 | else if (strcmp (parent->name, "protected") == 0) | |
2242 | { | |
2243 | while (index >= 0) | |
2244 | { | |
2245 | if (TYPE_VPTR_BASETYPE (type) == type | |
2246 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2247 | ; /* ignore vptr */ | |
2248 | else if (TYPE_FIELD_PROTECTED (type, type_index)) | |
2249 | --index; | |
2250 | ++type_index; | |
2251 | } | |
2252 | --type_index; | |
2253 | } | |
2254 | else | |
2255 | { | |
2256 | while (index >= 0) | |
2257 | { | |
2258 | if (TYPE_VPTR_BASETYPE (type) == type | |
2259 | && type_index == TYPE_VPTR_FIELDNO (type)) | |
2260 | ; /* ignore vptr */ | |
2261 | else if (!TYPE_FIELD_PRIVATE (type, type_index) && | |
2262 | !TYPE_FIELD_PROTECTED (type, type_index)) | |
2263 | --index; | |
2264 | ++type_index; | |
2265 | } | |
2266 | --type_index; | |
2267 | } | |
2268 | ||
2269 | name = TYPE_FIELD_NAME (type, type_index); | |
8b93c638 JM |
2270 | } |
2271 | else if (index < TYPE_N_BASECLASSES (type)) | |
6e382aa3 | 2272 | /* We are looking up the name of a base class */ |
8b93c638 JM |
2273 | name = TYPE_FIELD_NAME (type, index); |
2274 | else | |
2275 | { | |
6e382aa3 JJ |
2276 | int children[3]; |
2277 | cplus_class_num_children(type, children); | |
2278 | ||
8b93c638 | 2279 | /* Everything beyond the baseclasses can |
6e382aa3 JJ |
2280 | only be "public", "private", or "protected" |
2281 | ||
2282 | The special "fake" children are always output by varobj in | |
2283 | this order. So if INDEX == 2, it MUST be "protected". */ | |
8b93c638 JM |
2284 | index -= TYPE_N_BASECLASSES (type); |
2285 | switch (index) | |
2286 | { | |
2287 | case 0: | |
6e382aa3 JJ |
2288 | if (children[v_public] > 0) |
2289 | name = "public"; | |
2290 | else if (children[v_private] > 0) | |
2291 | name = "private"; | |
2292 | else | |
2293 | name = "protected"; | |
2294 | break; | |
8b93c638 | 2295 | case 1: |
6e382aa3 | 2296 | if (children[v_public] > 0) |
8b93c638 | 2297 | { |
6e382aa3 JJ |
2298 | if (children[v_private] > 0) |
2299 | name = "private"; | |
2300 | else | |
2301 | name = "protected"; | |
8b93c638 | 2302 | } |
6e382aa3 JJ |
2303 | else if (children[v_private] > 0) |
2304 | name = "protected"; | |
2305 | break; | |
8b93c638 | 2306 | case 2: |
6e382aa3 JJ |
2307 | /* Must be protected */ |
2308 | name = "protected"; | |
2309 | break; | |
8b93c638 JM |
2310 | default: |
2311 | /* error! */ | |
2312 | break; | |
2313 | } | |
2314 | } | |
2315 | break; | |
2316 | ||
2317 | default: | |
2318 | break; | |
2319 | } | |
2320 | ||
2321 | if (name == NULL) | |
2322 | return c_name_of_child (parent, index); | |
2323 | else | |
2324 | { | |
2325 | if (name != NULL) | |
2326 | name = savestring (name, strlen (name)); | |
2327 | } | |
2328 | ||
2329 | return name; | |
2330 | } | |
2331 | ||
30b28db1 | 2332 | static struct value * |
fba45db2 | 2333 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 2334 | { |
73a93a32 | 2335 | return c_value_of_root (var_handle); |
8b93c638 JM |
2336 | } |
2337 | ||
30b28db1 | 2338 | static struct value * |
fba45db2 | 2339 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2340 | { |
2341 | struct type *type; | |
30b28db1 | 2342 | struct value *value; |
8b93c638 JM |
2343 | |
2344 | if (CPLUS_FAKE_CHILD (parent)) | |
2345 | type = get_type_deref (parent->parent); | |
2346 | else | |
2347 | type = get_type_deref (parent); | |
2348 | ||
2349 | value = NULL; | |
8b93c638 JM |
2350 | |
2351 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
2352 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) | |
2353 | { | |
2354 | if (CPLUS_FAKE_CHILD (parent)) | |
2355 | { | |
5bbc1a8e | 2356 | char *name; |
30b28db1 | 2357 | struct value *temp = parent->parent->value; |
30c6b1fb | 2358 | |
575bbeb6 KS |
2359 | if (temp == NULL) |
2360 | return NULL; | |
2361 | ||
5bbc1a8e | 2362 | name = name_of_child (parent, index); |
30c6b1fb KS |
2363 | gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL, |
2364 | "cplus_structure"); | |
2365 | if (value != NULL) | |
2366 | release_value (value); | |
5bbc1a8e KS |
2367 | |
2368 | xfree (name); | |
8b93c638 JM |
2369 | } |
2370 | else if (index >= TYPE_N_BASECLASSES (type)) | |
2371 | { | |
2372 | /* public, private, or protected */ | |
2373 | return NULL; | |
2374 | } | |
2375 | else | |
2376 | { | |
2377 | /* Baseclass */ | |
2378 | if (parent->value != NULL) | |
2379 | { | |
575bbeb6 | 2380 | struct value *temp = NULL; |
8b93c638 | 2381 | |
df407dfe AC |
2382 | if (TYPE_CODE (value_type (parent->value)) == TYPE_CODE_PTR |
2383 | || TYPE_CODE (value_type (parent->value)) == TYPE_CODE_REF) | |
4abb499e KS |
2384 | { |
2385 | if (!gdb_value_ind (parent->value, &temp)) | |
2386 | return NULL; | |
2387 | } | |
8b93c638 JM |
2388 | else |
2389 | temp = parent->value; | |
2390 | ||
575bbeb6 KS |
2391 | if (temp != NULL) |
2392 | { | |
2393 | value = value_cast (TYPE_FIELD_TYPE (type, index), temp); | |
2394 | release_value (value); | |
2395 | } | |
2396 | else | |
2397 | { | |
2398 | /* We failed to evaluate the parent's value, so don't even | |
2399 | bother trying to evaluate this child. */ | |
2400 | return NULL; | |
2401 | } | |
8b93c638 JM |
2402 | } |
2403 | } | |
2404 | } | |
2405 | ||
2406 | if (value == NULL) | |
2407 | return c_value_of_child (parent, index); | |
2408 | ||
2409 | return value; | |
2410 | } | |
2411 | ||
2412 | static struct type * | |
fba45db2 | 2413 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2414 | { |
2415 | struct type *type, *t; | |
2416 | ||
575bbeb6 KS |
2417 | if (CPLUS_FAKE_CHILD (parent)) |
2418 | { | |
2419 | /* Looking for the type of a child of public, private, or protected. */ | |
2420 | t = get_type_deref (parent->parent); | |
2421 | } | |
2422 | else | |
2423 | t = get_type_deref (parent); | |
2424 | ||
8b93c638 JM |
2425 | type = NULL; |
2426 | switch (TYPE_CODE (t)) | |
2427 | { | |
2428 | case TYPE_CODE_STRUCT: | |
2429 | case TYPE_CODE_UNION: | |
575bbeb6 | 2430 | if (CPLUS_FAKE_CHILD (parent)) |
8b93c638 | 2431 | { |
575bbeb6 KS |
2432 | char *name = cplus_name_of_child (parent, index); |
2433 | type = lookup_struct_elt_type (t, name, 0); | |
2434 | xfree (name); | |
8b93c638 | 2435 | } |
575bbeb6 KS |
2436 | else if (index < TYPE_N_BASECLASSES (t)) |
2437 | type = TYPE_FIELD_TYPE (t, index); | |
8b93c638 JM |
2438 | else |
2439 | { | |
575bbeb6 KS |
2440 | /* special */ |
2441 | return NULL; | |
8b93c638 JM |
2442 | } |
2443 | break; | |
2444 | ||
2445 | default: | |
2446 | break; | |
2447 | } | |
2448 | ||
2449 | if (type == NULL) | |
2450 | return c_type_of_child (parent, index); | |
2451 | ||
2452 | return type; | |
2453 | } | |
2454 | ||
2455 | static int | |
fba45db2 | 2456 | cplus_variable_editable (struct varobj *var) |
8b93c638 JM |
2457 | { |
2458 | if (CPLUS_FAKE_CHILD (var)) | |
2459 | return 0; | |
2460 | ||
2461 | return c_variable_editable (var); | |
2462 | } | |
2463 | ||
2464 | static char * | |
fba45db2 | 2465 | cplus_value_of_variable (struct varobj *var) |
8b93c638 JM |
2466 | { |
2467 | ||
2468 | /* If we have one of our special types, don't print out | |
2469 | any value. */ | |
2470 | if (CPLUS_FAKE_CHILD (var)) | |
2471 | return xstrdup (""); | |
2472 | ||
2473 | return c_value_of_variable (var); | |
2474 | } | |
2475 | \f | |
2476 | /* Java */ | |
2477 | ||
2478 | static int | |
fba45db2 | 2479 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
2480 | { |
2481 | return cplus_number_of_children (var); | |
2482 | } | |
2483 | ||
2484 | static char * | |
fba45db2 | 2485 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
2486 | { |
2487 | char *p, *name; | |
2488 | ||
2489 | name = cplus_name_of_variable (parent); | |
2490 | /* If the name has "-" in it, it is because we | |
2491 | needed to escape periods in the name... */ | |
2492 | p = name; | |
2493 | ||
2494 | while (*p != '\000') | |
2495 | { | |
2496 | if (*p == '-') | |
2497 | *p = '.'; | |
2498 | p++; | |
2499 | } | |
2500 | ||
2501 | return name; | |
2502 | } | |
2503 | ||
2504 | static char * | |
fba45db2 | 2505 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2506 | { |
2507 | char *name, *p; | |
2508 | ||
2509 | name = cplus_name_of_child (parent, index); | |
2510 | /* Escape any periods in the name... */ | |
2511 | p = name; | |
2512 | ||
2513 | while (*p != '\000') | |
2514 | { | |
2515 | if (*p == '.') | |
2516 | *p = '-'; | |
2517 | p++; | |
2518 | } | |
2519 | ||
2520 | return name; | |
2521 | } | |
2522 | ||
30b28db1 | 2523 | static struct value * |
fba45db2 | 2524 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 2525 | { |
73a93a32 | 2526 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
2527 | } |
2528 | ||
30b28db1 | 2529 | static struct value * |
fba45db2 | 2530 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2531 | { |
2532 | return cplus_value_of_child (parent, index); | |
2533 | } | |
2534 | ||
2535 | static struct type * | |
fba45db2 | 2536 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
2537 | { |
2538 | return cplus_type_of_child (parent, index); | |
2539 | } | |
2540 | ||
2541 | static int | |
fba45db2 | 2542 | java_variable_editable (struct varobj *var) |
8b93c638 JM |
2543 | { |
2544 | return cplus_variable_editable (var); | |
2545 | } | |
2546 | ||
2547 | static char * | |
fba45db2 | 2548 | java_value_of_variable (struct varobj *var) |
8b93c638 JM |
2549 | { |
2550 | return cplus_value_of_variable (var); | |
2551 | } | |
2552 | \f | |
2553 | extern void _initialize_varobj (void); | |
2554 | void | |
2555 | _initialize_varobj (void) | |
2556 | { | |
2557 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
2558 | ||
2559 | varobj_table = xmalloc (sizeof_table); | |
2560 | memset (varobj_table, 0, sizeof_table); | |
2561 | ||
85c07804 AC |
2562 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
2563 | &varobjdebug, _("\ | |
2564 | Set varobj debugging."), _("\ | |
2565 | Show varobj debugging."), _("\ | |
2566 | When non-zero, varobj debugging is enabled."), | |
2567 | NULL, | |
920d2a44 | 2568 | show_varobjdebug, |
85c07804 | 2569 | &setlist, &showlist); |
8b93c638 | 2570 | } |