Commit | Line | Data |
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8b93c638 | 1 | /* Implementation of the GDB variable objects API. |
bc8332bb | 2 | |
c5a57081 | 3 | Copyright (C) 1999-2012 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 | |
a9762ec7 | 7 | the Free Software Foundation; either version 3 of the License, or |
8b93c638 JM |
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 | |
a9762ec7 | 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
8b93c638 JM |
17 | |
18 | #include "defs.h" | |
a6c442d8 | 19 | #include "exceptions.h" |
8b93c638 JM |
20 | #include "value.h" |
21 | #include "expression.h" | |
22 | #include "frame.h" | |
8b93c638 | 23 | #include "language.h" |
8b93c638 | 24 | #include "gdbcmd.h" |
d2353924 | 25 | #include "block.h" |
79a45b7d | 26 | #include "valprint.h" |
a6c442d8 MK |
27 | |
28 | #include "gdb_assert.h" | |
b66d6d2e | 29 | #include "gdb_string.h" |
0cc7d26f | 30 | #include "gdb_regex.h" |
8b93c638 JM |
31 | |
32 | #include "varobj.h" | |
28335dcc | 33 | #include "vec.h" |
6208b47d VP |
34 | #include "gdbthread.h" |
35 | #include "inferior.h" | |
8b93c638 | 36 | |
b6313243 TT |
37 | #if HAVE_PYTHON |
38 | #include "python/python.h" | |
39 | #include "python/python-internal.h" | |
50389644 PA |
40 | #else |
41 | typedef int PyObject; | |
b6313243 TT |
42 | #endif |
43 | ||
8b93c638 JM |
44 | /* Non-zero if we want to see trace of varobj level stuff. */ |
45 | ||
46 | int varobjdebug = 0; | |
920d2a44 AC |
47 | static void |
48 | show_varobjdebug (struct ui_file *file, int from_tty, | |
49 | struct cmd_list_element *c, const char *value) | |
50 | { | |
51 | fprintf_filtered (file, _("Varobj debugging is %s.\n"), value); | |
52 | } | |
8b93c638 | 53 | |
581e13c1 | 54 | /* String representations of gdb's format codes. */ |
8b93c638 | 55 | char *varobj_format_string[] = |
72330bd6 | 56 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 | 57 | |
581e13c1 | 58 | /* String representations of gdb's known languages. */ |
72330bd6 | 59 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 | 60 | |
0cc7d26f TT |
61 | /* True if we want to allow Python-based pretty-printing. */ |
62 | static int pretty_printing = 0; | |
63 | ||
64 | void | |
65 | varobj_enable_pretty_printing (void) | |
66 | { | |
67 | pretty_printing = 1; | |
68 | } | |
69 | ||
8b93c638 JM |
70 | /* Data structures */ |
71 | ||
72 | /* Every root variable has one of these structures saved in its | |
581e13c1 | 73 | varobj. Members which must be free'd are noted. */ |
8b93c638 | 74 | struct varobj_root |
72330bd6 | 75 | { |
8b93c638 | 76 | |
581e13c1 | 77 | /* Alloc'd expression for this parent. */ |
72330bd6 | 78 | struct expression *exp; |
8b93c638 | 79 | |
581e13c1 | 80 | /* Block for which this expression is valid. */ |
72330bd6 | 81 | struct block *valid_block; |
8b93c638 | 82 | |
44a67aa7 VP |
83 | /* The frame for this expression. This field is set iff valid_block is |
84 | not NULL. */ | |
e64d9b3d | 85 | struct frame_id frame; |
8b93c638 | 86 | |
c5b48eac | 87 | /* The thread ID that this varobj_root belong to. This field |
581e13c1 | 88 | is only valid if valid_block is not NULL. |
c5b48eac VP |
89 | When not 0, indicates which thread 'frame' belongs to. |
90 | When 0, indicates that the thread list was empty when the varobj_root | |
91 | was created. */ | |
92 | int thread_id; | |
93 | ||
a5defcdc VP |
94 | /* If 1, the -var-update always recomputes the value in the |
95 | current thread and frame. Otherwise, variable object is | |
581e13c1 | 96 | always updated in the specific scope/thread/frame. */ |
a5defcdc | 97 | int floating; |
73a93a32 | 98 | |
8756216b DP |
99 | /* Flag that indicates validity: set to 0 when this varobj_root refers |
100 | to symbols that do not exist anymore. */ | |
101 | int is_valid; | |
102 | ||
581e13c1 | 103 | /* Language info for this variable and its children. */ |
72330bd6 | 104 | struct language_specific *lang; |
8b93c638 | 105 | |
581e13c1 | 106 | /* The varobj for this root node. */ |
72330bd6 | 107 | struct varobj *rootvar; |
8b93c638 | 108 | |
72330bd6 AC |
109 | /* Next root variable */ |
110 | struct varobj_root *next; | |
111 | }; | |
8b93c638 JM |
112 | |
113 | /* Every variable in the system has a structure of this type defined | |
581e13c1 MS |
114 | for it. This structure holds all information necessary to manipulate |
115 | a particular object variable. Members which must be freed are noted. */ | |
8b93c638 | 116 | struct varobj |
72330bd6 | 117 | { |
8b93c638 | 118 | |
581e13c1 | 119 | /* Alloc'd name of the variable for this object. If this variable is a |
72330bd6 | 120 | child, then this name will be the child's source name. |
581e13c1 MS |
121 | (bar, not foo.bar). */ |
122 | /* NOTE: This is the "expression". */ | |
72330bd6 | 123 | char *name; |
8b93c638 | 124 | |
02142340 VP |
125 | /* Alloc'd expression for this child. Can be used to create a |
126 | root variable corresponding to this child. */ | |
127 | char *path_expr; | |
128 | ||
581e13c1 MS |
129 | /* The alloc'd name for this variable's object. This is here for |
130 | convenience when constructing this object's children. */ | |
72330bd6 | 131 | char *obj_name; |
8b93c638 | 132 | |
581e13c1 | 133 | /* Index of this variable in its parent or -1. */ |
72330bd6 | 134 | int index; |
8b93c638 | 135 | |
202ddcaa VP |
136 | /* The type of this variable. This can be NULL |
137 | for artifial variable objects -- currently, the "accessibility" | |
138 | variable objects in C++. */ | |
72330bd6 | 139 | struct type *type; |
8b93c638 | 140 | |
b20d8971 VP |
141 | /* The value of this expression or subexpression. A NULL value |
142 | indicates there was an error getting this value. | |
b2c2bd75 VP |
143 | Invariant: if varobj_value_is_changeable_p (this) is non-zero, |
144 | the value is either NULL, or not lazy. */ | |
30b28db1 | 145 | struct value *value; |
8b93c638 | 146 | |
581e13c1 | 147 | /* The number of (immediate) children this variable has. */ |
72330bd6 | 148 | int num_children; |
8b93c638 | 149 | |
581e13c1 | 150 | /* If this object is a child, this points to its immediate parent. */ |
72330bd6 | 151 | struct varobj *parent; |
8b93c638 | 152 | |
28335dcc VP |
153 | /* Children of this object. */ |
154 | VEC (varobj_p) *children; | |
8b93c638 | 155 | |
b6313243 TT |
156 | /* Whether the children of this varobj were requested. This field is |
157 | used to decide if dynamic varobj should recompute their children. | |
158 | In the event that the frontend never asked for the children, we | |
159 | can avoid that. */ | |
160 | int children_requested; | |
161 | ||
581e13c1 MS |
162 | /* Description of the root variable. Points to root variable for |
163 | children. */ | |
72330bd6 | 164 | struct varobj_root *root; |
8b93c638 | 165 | |
581e13c1 | 166 | /* The format of the output for this object. */ |
72330bd6 | 167 | enum varobj_display_formats format; |
fb9b6b35 | 168 | |
581e13c1 | 169 | /* Was this variable updated via a varobj_set_value operation. */ |
fb9b6b35 | 170 | int updated; |
85265413 NR |
171 | |
172 | /* Last print value. */ | |
173 | char *print_value; | |
25d5ea92 VP |
174 | |
175 | /* Is this variable frozen. Frozen variables are never implicitly | |
176 | updated by -var-update * | |
177 | or -var-update <direct-or-indirect-parent>. */ | |
178 | int frozen; | |
179 | ||
180 | /* Is the value of this variable intentionally not fetched? It is | |
181 | not fetched if either the variable is frozen, or any parents is | |
182 | frozen. */ | |
183 | int not_fetched; | |
b6313243 | 184 | |
0cc7d26f TT |
185 | /* Sub-range of children which the MI consumer has requested. If |
186 | FROM < 0 or TO < 0, means that all children have been | |
187 | requested. */ | |
188 | int from; | |
189 | int to; | |
190 | ||
191 | /* The pretty-printer constructor. If NULL, then the default | |
192 | pretty-printer will be looked up. If None, then no | |
193 | pretty-printer will be installed. */ | |
194 | PyObject *constructor; | |
195 | ||
b6313243 TT |
196 | /* The pretty-printer that has been constructed. If NULL, then a |
197 | new printer object is needed, and one will be constructed. */ | |
198 | PyObject *pretty_printer; | |
0cc7d26f TT |
199 | |
200 | /* The iterator returned by the printer's 'children' method, or NULL | |
201 | if not available. */ | |
202 | PyObject *child_iter; | |
203 | ||
204 | /* We request one extra item from the iterator, so that we can | |
205 | report to the caller whether there are more items than we have | |
206 | already reported. However, we don't want to install this value | |
207 | when we read it, because that will mess up future updates. So, | |
208 | we stash it here instead. */ | |
209 | PyObject *saved_item; | |
72330bd6 | 210 | }; |
8b93c638 | 211 | |
8b93c638 | 212 | struct cpstack |
72330bd6 AC |
213 | { |
214 | char *name; | |
215 | struct cpstack *next; | |
216 | }; | |
8b93c638 JM |
217 | |
218 | /* A list of varobjs */ | |
219 | ||
220 | struct vlist | |
72330bd6 AC |
221 | { |
222 | struct varobj *var; | |
223 | struct vlist *next; | |
224 | }; | |
8b93c638 JM |
225 | |
226 | /* Private function prototypes */ | |
227 | ||
581e13c1 | 228 | /* Helper functions for the above subcommands. */ |
8b93c638 | 229 | |
a14ed312 | 230 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 231 | |
a14ed312 KB |
232 | static void delete_variable_1 (struct cpstack **, int *, |
233 | struct varobj *, int, int); | |
8b93c638 | 234 | |
a14ed312 | 235 | static int install_variable (struct varobj *); |
8b93c638 | 236 | |
a14ed312 | 237 | static void uninstall_variable (struct varobj *); |
8b93c638 | 238 | |
a14ed312 | 239 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 240 | |
b6313243 TT |
241 | static struct varobj * |
242 | create_child_with_value (struct varobj *parent, int index, const char *name, | |
243 | struct value *value); | |
244 | ||
8b93c638 JM |
245 | /* Utility routines */ |
246 | ||
a14ed312 | 247 | static struct varobj *new_variable (void); |
8b93c638 | 248 | |
a14ed312 | 249 | static struct varobj *new_root_variable (void); |
8b93c638 | 250 | |
a14ed312 | 251 | static void free_variable (struct varobj *var); |
8b93c638 | 252 | |
74b7792f AC |
253 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
254 | ||
a14ed312 | 255 | static struct type *get_type (struct varobj *var); |
8b93c638 | 256 | |
6e2a9270 VP |
257 | static struct type *get_value_type (struct varobj *var); |
258 | ||
a14ed312 | 259 | static struct type *get_target_type (struct type *); |
8b93c638 | 260 | |
a14ed312 | 261 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 262 | |
a14ed312 | 263 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 264 | |
a14ed312 | 265 | static char *cppop (struct cpstack **pstack); |
8b93c638 | 266 | |
acd65feb VP |
267 | static int install_new_value (struct varobj *var, struct value *value, |
268 | int initial); | |
269 | ||
581e13c1 | 270 | /* Language-specific routines. */ |
8b93c638 | 271 | |
a14ed312 | 272 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 273 | |
a14ed312 | 274 | static int number_of_children (struct varobj *); |
8b93c638 | 275 | |
a14ed312 | 276 | static char *name_of_variable (struct varobj *); |
8b93c638 | 277 | |
a14ed312 | 278 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 279 | |
30b28db1 | 280 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 281 | |
30b28db1 | 282 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 283 | |
de051565 MK |
284 | static char *my_value_of_variable (struct varobj *var, |
285 | enum varobj_display_formats format); | |
8b93c638 | 286 | |
85265413 | 287 | static char *value_get_print_value (struct value *value, |
b6313243 | 288 | enum varobj_display_formats format, |
d452c4bc | 289 | struct varobj *var); |
85265413 | 290 | |
b2c2bd75 VP |
291 | static int varobj_value_is_changeable_p (struct varobj *var); |
292 | ||
293 | static int is_root_p (struct varobj *var); | |
8b93c638 | 294 | |
d8b65138 JK |
295 | #if HAVE_PYTHON |
296 | ||
9a1edae6 PM |
297 | static struct varobj *varobj_add_child (struct varobj *var, |
298 | const char *name, | |
299 | struct value *value); | |
b6313243 | 300 | |
d8b65138 JK |
301 | #endif /* HAVE_PYTHON */ |
302 | ||
8b93c638 JM |
303 | /* C implementation */ |
304 | ||
a14ed312 | 305 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 306 | |
a14ed312 | 307 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 308 | |
a14ed312 | 309 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 310 | |
02142340 VP |
311 | static char *c_path_expr_of_child (struct varobj *child); |
312 | ||
30b28db1 | 313 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 314 | |
30b28db1 | 315 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 316 | |
a14ed312 | 317 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 318 | |
de051565 MK |
319 | static char *c_value_of_variable (struct varobj *var, |
320 | enum varobj_display_formats format); | |
8b93c638 JM |
321 | |
322 | /* C++ implementation */ | |
323 | ||
a14ed312 | 324 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 325 | |
a14ed312 | 326 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 327 | |
a14ed312 | 328 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 329 | |
a14ed312 | 330 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 331 | |
02142340 VP |
332 | static char *cplus_path_expr_of_child (struct varobj *child); |
333 | ||
30b28db1 | 334 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 335 | |
30b28db1 | 336 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 337 | |
a14ed312 | 338 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 339 | |
de051565 MK |
340 | static char *cplus_value_of_variable (struct varobj *var, |
341 | enum varobj_display_formats format); | |
8b93c638 JM |
342 | |
343 | /* Java implementation */ | |
344 | ||
a14ed312 | 345 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 346 | |
a14ed312 | 347 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 348 | |
a14ed312 | 349 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 350 | |
02142340 VP |
351 | static char *java_path_expr_of_child (struct varobj *child); |
352 | ||
30b28db1 | 353 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 354 | |
30b28db1 | 355 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 356 | |
a14ed312 | 357 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 358 | |
de051565 MK |
359 | static char *java_value_of_variable (struct varobj *var, |
360 | enum varobj_display_formats format); | |
8b93c638 | 361 | |
40591b7d JCD |
362 | /* Ada implementation */ |
363 | ||
364 | static int ada_number_of_children (struct varobj *var); | |
365 | ||
366 | static char *ada_name_of_variable (struct varobj *parent); | |
367 | ||
368 | static char *ada_name_of_child (struct varobj *parent, int index); | |
369 | ||
370 | static char *ada_path_expr_of_child (struct varobj *child); | |
371 | ||
372 | static struct value *ada_value_of_root (struct varobj **var_handle); | |
373 | ||
374 | static struct value *ada_value_of_child (struct varobj *parent, int index); | |
375 | ||
376 | static struct type *ada_type_of_child (struct varobj *parent, int index); | |
377 | ||
378 | static char *ada_value_of_variable (struct varobj *var, | |
379 | enum varobj_display_formats format); | |
380 | ||
8b93c638 JM |
381 | /* The language specific vector */ |
382 | ||
383 | struct language_specific | |
72330bd6 | 384 | { |
8b93c638 | 385 | |
581e13c1 | 386 | /* The language of this variable. */ |
72330bd6 | 387 | enum varobj_languages language; |
8b93c638 | 388 | |
581e13c1 | 389 | /* The number of children of PARENT. */ |
72330bd6 | 390 | int (*number_of_children) (struct varobj * parent); |
8b93c638 | 391 | |
581e13c1 | 392 | /* The name (expression) of a root varobj. */ |
72330bd6 | 393 | char *(*name_of_variable) (struct varobj * parent); |
8b93c638 | 394 | |
581e13c1 | 395 | /* The name of the INDEX'th child of PARENT. */ |
72330bd6 | 396 | char *(*name_of_child) (struct varobj * parent, int index); |
8b93c638 | 397 | |
02142340 VP |
398 | /* Returns the rooted expression of CHILD, which is a variable |
399 | obtain that has some parent. */ | |
400 | char *(*path_expr_of_child) (struct varobj * child); | |
401 | ||
581e13c1 | 402 | /* The ``struct value *'' of the root variable ROOT. */ |
30b28db1 | 403 | struct value *(*value_of_root) (struct varobj ** root_handle); |
8b93c638 | 404 | |
581e13c1 | 405 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
30b28db1 | 406 | struct value *(*value_of_child) (struct varobj * parent, int index); |
8b93c638 | 407 | |
581e13c1 | 408 | /* The type of the INDEX'th child of PARENT. */ |
72330bd6 | 409 | struct type *(*type_of_child) (struct varobj * parent, int index); |
8b93c638 | 410 | |
581e13c1 | 411 | /* The current value of VAR. */ |
de051565 MK |
412 | char *(*value_of_variable) (struct varobj * var, |
413 | enum varobj_display_formats format); | |
72330bd6 | 414 | }; |
8b93c638 | 415 | |
581e13c1 | 416 | /* Array of known source language routines. */ |
d5d6fca5 | 417 | static struct language_specific languages[vlang_end] = { |
581e13c1 | 418 | /* Unknown (try treating as C). */ |
8b93c638 | 419 | { |
72330bd6 AC |
420 | vlang_unknown, |
421 | c_number_of_children, | |
422 | c_name_of_variable, | |
423 | c_name_of_child, | |
02142340 | 424 | c_path_expr_of_child, |
72330bd6 AC |
425 | c_value_of_root, |
426 | c_value_of_child, | |
427 | c_type_of_child, | |
72330bd6 | 428 | c_value_of_variable} |
8b93c638 JM |
429 | , |
430 | /* C */ | |
431 | { | |
72330bd6 AC |
432 | vlang_c, |
433 | c_number_of_children, | |
434 | c_name_of_variable, | |
435 | c_name_of_child, | |
02142340 | 436 | c_path_expr_of_child, |
72330bd6 AC |
437 | c_value_of_root, |
438 | c_value_of_child, | |
439 | c_type_of_child, | |
72330bd6 | 440 | c_value_of_variable} |
8b93c638 JM |
441 | , |
442 | /* C++ */ | |
443 | { | |
72330bd6 AC |
444 | vlang_cplus, |
445 | cplus_number_of_children, | |
446 | cplus_name_of_variable, | |
447 | cplus_name_of_child, | |
02142340 | 448 | cplus_path_expr_of_child, |
72330bd6 AC |
449 | cplus_value_of_root, |
450 | cplus_value_of_child, | |
451 | cplus_type_of_child, | |
72330bd6 | 452 | cplus_value_of_variable} |
8b93c638 JM |
453 | , |
454 | /* Java */ | |
455 | { | |
72330bd6 AC |
456 | vlang_java, |
457 | java_number_of_children, | |
458 | java_name_of_variable, | |
459 | java_name_of_child, | |
02142340 | 460 | java_path_expr_of_child, |
72330bd6 AC |
461 | java_value_of_root, |
462 | java_value_of_child, | |
463 | java_type_of_child, | |
40591b7d JCD |
464 | java_value_of_variable}, |
465 | /* Ada */ | |
466 | { | |
467 | vlang_ada, | |
468 | ada_number_of_children, | |
469 | ada_name_of_variable, | |
470 | ada_name_of_child, | |
471 | ada_path_expr_of_child, | |
472 | ada_value_of_root, | |
473 | ada_value_of_child, | |
474 | ada_type_of_child, | |
475 | ada_value_of_variable} | |
8b93c638 JM |
476 | }; |
477 | ||
581e13c1 | 478 | /* A little convenience enum for dealing with C++/Java. */ |
8b93c638 | 479 | enum vsections |
72330bd6 AC |
480 | { |
481 | v_public = 0, v_private, v_protected | |
482 | }; | |
8b93c638 JM |
483 | |
484 | /* Private data */ | |
485 | ||
581e13c1 | 486 | /* Mappings of varobj_display_formats enums to gdb's format codes. */ |
72330bd6 | 487 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 | 488 | |
581e13c1 | 489 | /* Header of the list of root variable objects. */ |
8b93c638 | 490 | static struct varobj_root *rootlist; |
8b93c638 | 491 | |
581e13c1 MS |
492 | /* Prime number indicating the number of buckets in the hash table. */ |
493 | /* A prime large enough to avoid too many colisions. */ | |
8b93c638 JM |
494 | #define VAROBJ_TABLE_SIZE 227 |
495 | ||
581e13c1 | 496 | /* Pointer to the varobj hash table (built at run time). */ |
8b93c638 JM |
497 | static struct vlist **varobj_table; |
498 | ||
581e13c1 | 499 | /* Is the variable X one of our "fake" children? */ |
8b93c638 JM |
500 | #define CPLUS_FAKE_CHILD(x) \ |
501 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
502 | \f | |
503 | ||
504 | /* API Implementation */ | |
b2c2bd75 VP |
505 | static int |
506 | is_root_p (struct varobj *var) | |
507 | { | |
508 | return (var->root->rootvar == var); | |
509 | } | |
8b93c638 | 510 | |
d452c4bc UW |
511 | #ifdef HAVE_PYTHON |
512 | /* Helper function to install a Python environment suitable for | |
513 | use during operations on VAR. */ | |
514 | struct cleanup * | |
515 | varobj_ensure_python_env (struct varobj *var) | |
516 | { | |
517 | return ensure_python_env (var->root->exp->gdbarch, | |
518 | var->root->exp->language_defn); | |
519 | } | |
520 | #endif | |
521 | ||
581e13c1 | 522 | /* Creates a varobj (not its children). */ |
8b93c638 | 523 | |
7d8547c9 AC |
524 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
525 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ | |
526 | ||
527 | static struct frame_info * | |
528 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) | |
529 | { | |
530 | struct frame_info *frame = NULL; | |
531 | ||
532 | if (frame_addr == (CORE_ADDR) 0) | |
533 | return NULL; | |
534 | ||
9d49bdc2 PA |
535 | for (frame = get_current_frame (); |
536 | frame != NULL; | |
537 | frame = get_prev_frame (frame)) | |
7d8547c9 | 538 | { |
1fac167a UW |
539 | /* The CORE_ADDR we get as argument was parsed from a string GDB |
540 | output as $fp. This output got truncated to gdbarch_addr_bit. | |
541 | Truncate the frame base address in the same manner before | |
542 | comparing it against our argument. */ | |
543 | CORE_ADDR frame_base = get_frame_base_address (frame); | |
544 | int addr_bit = gdbarch_addr_bit (get_frame_arch (frame)); | |
a109c7c1 | 545 | |
1fac167a UW |
546 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
547 | frame_base &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
548 | ||
549 | if (frame_base == frame_addr) | |
7d8547c9 AC |
550 | return frame; |
551 | } | |
9d49bdc2 PA |
552 | |
553 | return NULL; | |
7d8547c9 AC |
554 | } |
555 | ||
8b93c638 JM |
556 | struct varobj * |
557 | varobj_create (char *objname, | |
72330bd6 | 558 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
559 | { |
560 | struct varobj *var; | |
8b93c638 JM |
561 | struct cleanup *old_chain; |
562 | ||
581e13c1 | 563 | /* Fill out a varobj structure for the (root) variable being constructed. */ |
8b93c638 | 564 | var = new_root_variable (); |
74b7792f | 565 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
566 | |
567 | if (expression != NULL) | |
568 | { | |
e4195b40 | 569 | struct frame_info *fi; |
35633fef | 570 | struct frame_id old_id = null_frame_id; |
e4195b40 | 571 | struct block *block; |
8b93c638 JM |
572 | char *p; |
573 | enum varobj_languages lang; | |
e55dccf0 | 574 | struct value *value = NULL; |
8e7b59a5 | 575 | volatile struct gdb_exception except; |
8b93c638 | 576 | |
9d49bdc2 PA |
577 | /* Parse and evaluate the expression, filling in as much of the |
578 | variable's data as possible. */ | |
579 | ||
580 | if (has_stack_frames ()) | |
581 | { | |
581e13c1 | 582 | /* Allow creator to specify context of variable. */ |
9d49bdc2 PA |
583 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
584 | fi = get_selected_frame (NULL); | |
585 | else | |
586 | /* FIXME: cagney/2002-11-23: This code should be doing a | |
587 | lookup using the frame ID and not just the frame's | |
588 | ``address''. This, of course, means an interface | |
589 | change. However, with out that interface change ISAs, | |
590 | such as the ia64 with its two stacks, won't work. | |
591 | Similar goes for the case where there is a frameless | |
592 | function. */ | |
593 | fi = find_frame_addr_in_frame_chain (frame); | |
594 | } | |
8b93c638 | 595 | else |
9d49bdc2 | 596 | fi = NULL; |
8b93c638 | 597 | |
581e13c1 | 598 | /* frame = -2 means always use selected frame. */ |
73a93a32 | 599 | if (type == USE_SELECTED_FRAME) |
a5defcdc | 600 | var->root->floating = 1; |
73a93a32 | 601 | |
8b93c638 JM |
602 | block = NULL; |
603 | if (fi != NULL) | |
ae767bfb | 604 | block = get_frame_block (fi, 0); |
8b93c638 JM |
605 | |
606 | p = expression; | |
607 | innermost_block = NULL; | |
73a93a32 | 608 | /* Wrap the call to parse expression, so we can |
581e13c1 | 609 | return a sensible error. */ |
8e7b59a5 KS |
610 | TRY_CATCH (except, RETURN_MASK_ERROR) |
611 | { | |
612 | var->root->exp = parse_exp_1 (&p, block, 0); | |
613 | } | |
614 | ||
615 | if (except.reason < 0) | |
73a93a32 | 616 | { |
f748fb40 | 617 | do_cleanups (old_chain); |
73a93a32 JI |
618 | return NULL; |
619 | } | |
8b93c638 | 620 | |
581e13c1 | 621 | /* Don't allow variables to be created for types. */ |
8b93c638 JM |
622 | if (var->root->exp->elts[0].opcode == OP_TYPE) |
623 | { | |
624 | do_cleanups (old_chain); | |
bc8332bb AC |
625 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
626 | " as an expression.\n"); | |
8b93c638 JM |
627 | return NULL; |
628 | } | |
629 | ||
630 | var->format = variable_default_display (var); | |
631 | var->root->valid_block = innermost_block; | |
1b36a34b | 632 | var->name = xstrdup (expression); |
02142340 | 633 | /* For a root var, the name and the expr are the same. */ |
1b36a34b | 634 | var->path_expr = xstrdup (expression); |
8b93c638 JM |
635 | |
636 | /* When the frame is different from the current frame, | |
637 | we must select the appropriate frame before parsing | |
638 | the expression, otherwise the value will not be current. | |
581e13c1 | 639 | Since select_frame is so benign, just call it for all cases. */ |
4e22772d | 640 | if (innermost_block) |
8b93c638 | 641 | { |
4e22772d JK |
642 | /* User could specify explicit FRAME-ADDR which was not found but |
643 | EXPRESSION is frame specific and we would not be able to evaluate | |
644 | it correctly next time. With VALID_BLOCK set we must also set | |
645 | FRAME and THREAD_ID. */ | |
646 | if (fi == NULL) | |
647 | error (_("Failed to find the specified frame")); | |
648 | ||
7a424e99 | 649 | var->root->frame = get_frame_id (fi); |
c5b48eac | 650 | var->root->thread_id = pid_to_thread_id (inferior_ptid); |
35633fef | 651 | old_id = get_frame_id (get_selected_frame (NULL)); |
c5b48eac | 652 | select_frame (fi); |
8b93c638 JM |
653 | } |
654 | ||
340a7723 | 655 | /* We definitely need to catch errors here. |
8b93c638 | 656 | If evaluate_expression succeeds we got the value we wanted. |
581e13c1 | 657 | But if it fails, we still go on with a call to evaluate_type(). */ |
8e7b59a5 KS |
658 | TRY_CATCH (except, RETURN_MASK_ERROR) |
659 | { | |
660 | value = evaluate_expression (var->root->exp); | |
661 | } | |
662 | ||
663 | if (except.reason < 0) | |
e55dccf0 VP |
664 | { |
665 | /* Error getting the value. Try to at least get the | |
666 | right type. */ | |
667 | struct value *type_only_value = evaluate_type (var->root->exp); | |
a109c7c1 | 668 | |
e55dccf0 VP |
669 | var->type = value_type (type_only_value); |
670 | } | |
671 | else | |
672 | var->type = value_type (value); | |
acd65feb | 673 | |
acd65feb | 674 | install_new_value (var, value, 1 /* Initial assignment */); |
8b93c638 JM |
675 | |
676 | /* Set language info */ | |
677 | lang = variable_language (var); | |
d5d6fca5 | 678 | var->root->lang = &languages[lang]; |
8b93c638 | 679 | |
581e13c1 | 680 | /* Set ourselves as our root. */ |
8b93c638 JM |
681 | var->root->rootvar = var; |
682 | ||
581e13c1 | 683 | /* Reset the selected frame. */ |
35633fef JK |
684 | if (frame_id_p (old_id)) |
685 | select_frame (frame_find_by_id (old_id)); | |
8b93c638 JM |
686 | } |
687 | ||
73a93a32 | 688 | /* If the variable object name is null, that means this |
581e13c1 | 689 | is a temporary variable, so don't install it. */ |
73a93a32 JI |
690 | |
691 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 | 692 | { |
1b36a34b | 693 | var->obj_name = xstrdup (objname); |
8b93c638 JM |
694 | |
695 | /* If a varobj name is duplicated, the install will fail so | |
581e13c1 | 696 | we must cleanup. */ |
8b93c638 JM |
697 | if (!install_variable (var)) |
698 | { | |
699 | do_cleanups (old_chain); | |
700 | return NULL; | |
701 | } | |
702 | } | |
703 | ||
704 | discard_cleanups (old_chain); | |
705 | return var; | |
706 | } | |
707 | ||
581e13c1 | 708 | /* Generates an unique name that can be used for a varobj. */ |
8b93c638 JM |
709 | |
710 | char * | |
711 | varobj_gen_name (void) | |
712 | { | |
713 | static int id = 0; | |
e64d9b3d | 714 | char *obj_name; |
8b93c638 | 715 | |
581e13c1 | 716 | /* Generate a name for this object. */ |
8b93c638 | 717 | id++; |
b435e160 | 718 | obj_name = xstrprintf ("var%d", id); |
8b93c638 | 719 | |
e64d9b3d | 720 | return obj_name; |
8b93c638 JM |
721 | } |
722 | ||
61d8f275 JK |
723 | /* Given an OBJNAME, returns the pointer to the corresponding varobj. Call |
724 | error if OBJNAME cannot be found. */ | |
8b93c638 JM |
725 | |
726 | struct varobj * | |
727 | varobj_get_handle (char *objname) | |
728 | { | |
729 | struct vlist *cv; | |
730 | const char *chp; | |
731 | unsigned int index = 0; | |
732 | unsigned int i = 1; | |
733 | ||
734 | for (chp = objname; *chp; chp++) | |
735 | { | |
736 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
737 | } | |
738 | ||
739 | cv = *(varobj_table + index); | |
740 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
741 | cv = cv->next; | |
742 | ||
743 | if (cv == NULL) | |
8a3fe4f8 | 744 | error (_("Variable object not found")); |
8b93c638 JM |
745 | |
746 | return cv->var; | |
747 | } | |
748 | ||
581e13c1 | 749 | /* Given the handle, return the name of the object. */ |
8b93c638 JM |
750 | |
751 | char * | |
752 | varobj_get_objname (struct varobj *var) | |
753 | { | |
754 | return var->obj_name; | |
755 | } | |
756 | ||
581e13c1 | 757 | /* Given the handle, return the expression represented by the object. */ |
8b93c638 JM |
758 | |
759 | char * | |
760 | varobj_get_expression (struct varobj *var) | |
761 | { | |
762 | return name_of_variable (var); | |
763 | } | |
764 | ||
765 | /* Deletes a varobj and all its children if only_children == 0, | |
3e43a32a MS |
766 | otherwise deletes only the children; returns a malloc'ed list of |
767 | all the (malloc'ed) names of the variables that have been deleted | |
581e13c1 | 768 | (NULL terminated). */ |
8b93c638 JM |
769 | |
770 | int | |
771 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
772 | { | |
773 | int delcount; | |
774 | int mycount; | |
775 | struct cpstack *result = NULL; | |
776 | char **cp; | |
777 | ||
581e13c1 | 778 | /* Initialize a stack for temporary results. */ |
8b93c638 JM |
779 | cppush (&result, NULL); |
780 | ||
781 | if (only_children) | |
581e13c1 | 782 | /* Delete only the variable children. */ |
8b93c638 JM |
783 | delcount = delete_variable (&result, var, 1 /* only the children */ ); |
784 | else | |
581e13c1 | 785 | /* Delete the variable and all its children. */ |
8b93c638 JM |
786 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); |
787 | ||
581e13c1 | 788 | /* We may have been asked to return a list of what has been deleted. */ |
8b93c638 JM |
789 | if (dellist != NULL) |
790 | { | |
791 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
792 | ||
793 | cp = *dellist; | |
794 | mycount = delcount; | |
795 | *cp = cppop (&result); | |
796 | while ((*cp != NULL) && (mycount > 0)) | |
797 | { | |
798 | mycount--; | |
799 | cp++; | |
800 | *cp = cppop (&result); | |
801 | } | |
802 | ||
803 | if (mycount || (*cp != NULL)) | |
8a3fe4f8 | 804 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
72330bd6 | 805 | mycount); |
8b93c638 JM |
806 | } |
807 | ||
808 | return delcount; | |
809 | } | |
810 | ||
d8b65138 JK |
811 | #if HAVE_PYTHON |
812 | ||
b6313243 TT |
813 | /* Convenience function for varobj_set_visualizer. Instantiate a |
814 | pretty-printer for a given value. */ | |
815 | static PyObject * | |
816 | instantiate_pretty_printer (PyObject *constructor, struct value *value) | |
817 | { | |
b6313243 TT |
818 | PyObject *val_obj = NULL; |
819 | PyObject *printer; | |
b6313243 | 820 | |
b6313243 | 821 | val_obj = value_to_value_object (value); |
b6313243 TT |
822 | if (! val_obj) |
823 | return NULL; | |
824 | ||
825 | printer = PyObject_CallFunctionObjArgs (constructor, val_obj, NULL); | |
826 | Py_DECREF (val_obj); | |
827 | return printer; | |
b6313243 TT |
828 | } |
829 | ||
d8b65138 JK |
830 | #endif |
831 | ||
581e13c1 | 832 | /* Set/Get variable object display format. */ |
8b93c638 JM |
833 | |
834 | enum varobj_display_formats | |
835 | varobj_set_display_format (struct varobj *var, | |
836 | enum varobj_display_formats format) | |
837 | { | |
838 | switch (format) | |
839 | { | |
840 | case FORMAT_NATURAL: | |
841 | case FORMAT_BINARY: | |
842 | case FORMAT_DECIMAL: | |
843 | case FORMAT_HEXADECIMAL: | |
844 | case FORMAT_OCTAL: | |
845 | var->format = format; | |
846 | break; | |
847 | ||
848 | default: | |
849 | var->format = variable_default_display (var); | |
850 | } | |
851 | ||
ae7d22a6 VP |
852 | if (varobj_value_is_changeable_p (var) |
853 | && var->value && !value_lazy (var->value)) | |
854 | { | |
6c761d9c | 855 | xfree (var->print_value); |
d452c4bc | 856 | var->print_value = value_get_print_value (var->value, var->format, var); |
ae7d22a6 VP |
857 | } |
858 | ||
8b93c638 JM |
859 | return var->format; |
860 | } | |
861 | ||
862 | enum varobj_display_formats | |
863 | varobj_get_display_format (struct varobj *var) | |
864 | { | |
865 | return var->format; | |
866 | } | |
867 | ||
b6313243 TT |
868 | char * |
869 | varobj_get_display_hint (struct varobj *var) | |
870 | { | |
871 | char *result = NULL; | |
872 | ||
873 | #if HAVE_PYTHON | |
d452c4bc UW |
874 | struct cleanup *back_to = varobj_ensure_python_env (var); |
875 | ||
b6313243 TT |
876 | if (var->pretty_printer) |
877 | result = gdbpy_get_display_hint (var->pretty_printer); | |
d452c4bc UW |
878 | |
879 | do_cleanups (back_to); | |
b6313243 TT |
880 | #endif |
881 | ||
882 | return result; | |
883 | } | |
884 | ||
0cc7d26f TT |
885 | /* Return true if the varobj has items after TO, false otherwise. */ |
886 | ||
887 | int | |
888 | varobj_has_more (struct varobj *var, int to) | |
889 | { | |
890 | if (VEC_length (varobj_p, var->children) > to) | |
891 | return 1; | |
892 | return ((to == -1 || VEC_length (varobj_p, var->children) == to) | |
893 | && var->saved_item != NULL); | |
894 | } | |
895 | ||
c5b48eac VP |
896 | /* If the variable object is bound to a specific thread, that |
897 | is its evaluation can always be done in context of a frame | |
898 | inside that thread, returns GDB id of the thread -- which | |
581e13c1 | 899 | is always positive. Otherwise, returns -1. */ |
c5b48eac VP |
900 | int |
901 | varobj_get_thread_id (struct varobj *var) | |
902 | { | |
903 | if (var->root->valid_block && var->root->thread_id > 0) | |
904 | return var->root->thread_id; | |
905 | else | |
906 | return -1; | |
907 | } | |
908 | ||
25d5ea92 VP |
909 | void |
910 | varobj_set_frozen (struct varobj *var, int frozen) | |
911 | { | |
912 | /* When a variable is unfrozen, we don't fetch its value. | |
913 | The 'not_fetched' flag remains set, so next -var-update | |
914 | won't complain. | |
915 | ||
916 | We don't fetch the value, because for structures the client | |
917 | should do -var-update anyway. It would be bad to have different | |
918 | client-size logic for structure and other types. */ | |
919 | var->frozen = frozen; | |
920 | } | |
921 | ||
922 | int | |
923 | varobj_get_frozen (struct varobj *var) | |
924 | { | |
925 | return var->frozen; | |
926 | } | |
927 | ||
0cc7d26f TT |
928 | /* A helper function that restricts a range to what is actually |
929 | available in a VEC. This follows the usual rules for the meaning | |
930 | of FROM and TO -- if either is negative, the entire range is | |
931 | used. */ | |
932 | ||
933 | static void | |
934 | restrict_range (VEC (varobj_p) *children, int *from, int *to) | |
935 | { | |
936 | if (*from < 0 || *to < 0) | |
937 | { | |
938 | *from = 0; | |
939 | *to = VEC_length (varobj_p, children); | |
940 | } | |
941 | else | |
942 | { | |
943 | if (*from > VEC_length (varobj_p, children)) | |
944 | *from = VEC_length (varobj_p, children); | |
945 | if (*to > VEC_length (varobj_p, children)) | |
946 | *to = VEC_length (varobj_p, children); | |
947 | if (*from > *to) | |
948 | *from = *to; | |
949 | } | |
950 | } | |
951 | ||
d8b65138 JK |
952 | #if HAVE_PYTHON |
953 | ||
0cc7d26f TT |
954 | /* A helper for update_dynamic_varobj_children that installs a new |
955 | child when needed. */ | |
956 | ||
957 | static void | |
958 | install_dynamic_child (struct varobj *var, | |
959 | VEC (varobj_p) **changed, | |
960 | VEC (varobj_p) **new, | |
961 | VEC (varobj_p) **unchanged, | |
962 | int *cchanged, | |
963 | int index, | |
964 | const char *name, | |
965 | struct value *value) | |
966 | { | |
967 | if (VEC_length (varobj_p, var->children) < index + 1) | |
968 | { | |
969 | /* There's no child yet. */ | |
970 | struct varobj *child = varobj_add_child (var, name, value); | |
a109c7c1 | 971 | |
0cc7d26f TT |
972 | if (new) |
973 | { | |
974 | VEC_safe_push (varobj_p, *new, child); | |
975 | *cchanged = 1; | |
976 | } | |
977 | } | |
978 | else | |
979 | { | |
980 | varobj_p existing = VEC_index (varobj_p, var->children, index); | |
a109c7c1 | 981 | |
0cc7d26f TT |
982 | if (install_new_value (existing, value, 0)) |
983 | { | |
984 | if (changed) | |
985 | VEC_safe_push (varobj_p, *changed, existing); | |
986 | } | |
987 | else if (unchanged) | |
988 | VEC_safe_push (varobj_p, *unchanged, existing); | |
989 | } | |
990 | } | |
991 | ||
0cc7d26f TT |
992 | static int |
993 | dynamic_varobj_has_child_method (struct varobj *var) | |
994 | { | |
995 | struct cleanup *back_to; | |
996 | PyObject *printer = var->pretty_printer; | |
997 | int result; | |
998 | ||
999 | back_to = varobj_ensure_python_env (var); | |
1000 | result = PyObject_HasAttr (printer, gdbpy_children_cst); | |
1001 | do_cleanups (back_to); | |
1002 | return result; | |
1003 | } | |
1004 | ||
1005 | #endif | |
1006 | ||
b6313243 TT |
1007 | static int |
1008 | update_dynamic_varobj_children (struct varobj *var, | |
1009 | VEC (varobj_p) **changed, | |
0cc7d26f TT |
1010 | VEC (varobj_p) **new, |
1011 | VEC (varobj_p) **unchanged, | |
1012 | int *cchanged, | |
1013 | int update_children, | |
1014 | int from, | |
1015 | int to) | |
b6313243 TT |
1016 | { |
1017 | #if HAVE_PYTHON | |
b6313243 TT |
1018 | struct cleanup *back_to; |
1019 | PyObject *children; | |
b6313243 | 1020 | int i; |
b6313243 | 1021 | PyObject *printer = var->pretty_printer; |
b6313243 | 1022 | |
d452c4bc | 1023 | back_to = varobj_ensure_python_env (var); |
b6313243 TT |
1024 | |
1025 | *cchanged = 0; | |
1026 | if (!PyObject_HasAttr (printer, gdbpy_children_cst)) | |
1027 | { | |
1028 | do_cleanups (back_to); | |
1029 | return 0; | |
1030 | } | |
1031 | ||
0cc7d26f | 1032 | if (update_children || !var->child_iter) |
b6313243 | 1033 | { |
0cc7d26f TT |
1034 | children = PyObject_CallMethodObjArgs (printer, gdbpy_children_cst, |
1035 | NULL); | |
b6313243 | 1036 | |
0cc7d26f TT |
1037 | if (!children) |
1038 | { | |
1039 | gdbpy_print_stack (); | |
1040 | error (_("Null value returned for children")); | |
1041 | } | |
b6313243 | 1042 | |
0cc7d26f | 1043 | make_cleanup_py_decref (children); |
b6313243 | 1044 | |
0cc7d26f TT |
1045 | if (!PyIter_Check (children)) |
1046 | error (_("Returned value is not iterable")); | |
1047 | ||
1048 | Py_XDECREF (var->child_iter); | |
1049 | var->child_iter = PyObject_GetIter (children); | |
1050 | if (!var->child_iter) | |
1051 | { | |
1052 | gdbpy_print_stack (); | |
1053 | error (_("Could not get children iterator")); | |
1054 | } | |
1055 | ||
1056 | Py_XDECREF (var->saved_item); | |
1057 | var->saved_item = NULL; | |
1058 | ||
1059 | i = 0; | |
b6313243 | 1060 | } |
0cc7d26f TT |
1061 | else |
1062 | i = VEC_length (varobj_p, var->children); | |
b6313243 | 1063 | |
0cc7d26f TT |
1064 | /* We ask for one extra child, so that MI can report whether there |
1065 | are more children. */ | |
1066 | for (; to < 0 || i < to + 1; ++i) | |
b6313243 | 1067 | { |
0cc7d26f | 1068 | PyObject *item; |
a4c8e806 | 1069 | int force_done = 0; |
b6313243 | 1070 | |
0cc7d26f TT |
1071 | /* See if there was a leftover from last time. */ |
1072 | if (var->saved_item) | |
1073 | { | |
1074 | item = var->saved_item; | |
1075 | var->saved_item = NULL; | |
1076 | } | |
1077 | else | |
1078 | item = PyIter_Next (var->child_iter); | |
b6313243 | 1079 | |
0cc7d26f | 1080 | if (!item) |
a4c8e806 TT |
1081 | { |
1082 | /* Normal end of iteration. */ | |
1083 | if (!PyErr_Occurred ()) | |
1084 | break; | |
1085 | ||
1086 | /* If we got a memory error, just use the text as the | |
1087 | item. */ | |
1088 | if (PyErr_ExceptionMatches (gdbpy_gdb_memory_error)) | |
1089 | { | |
1090 | PyObject *type, *value, *trace; | |
1091 | char *name_str, *value_str; | |
1092 | ||
1093 | PyErr_Fetch (&type, &value, &trace); | |
1094 | value_str = gdbpy_exception_to_string (type, value); | |
1095 | Py_XDECREF (type); | |
1096 | Py_XDECREF (value); | |
1097 | Py_XDECREF (trace); | |
1098 | if (!value_str) | |
1099 | { | |
1100 | gdbpy_print_stack (); | |
1101 | break; | |
1102 | } | |
1103 | ||
1104 | name_str = xstrprintf ("<error at %d>", i); | |
1105 | item = Py_BuildValue ("(ss)", name_str, value_str); | |
1106 | xfree (name_str); | |
1107 | xfree (value_str); | |
1108 | if (!item) | |
1109 | { | |
1110 | gdbpy_print_stack (); | |
1111 | break; | |
1112 | } | |
1113 | ||
1114 | force_done = 1; | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | /* Any other kind of error. */ | |
1119 | gdbpy_print_stack (); | |
1120 | break; | |
1121 | } | |
1122 | } | |
b6313243 | 1123 | |
0cc7d26f TT |
1124 | /* We don't want to push the extra child on any report list. */ |
1125 | if (to < 0 || i < to) | |
b6313243 | 1126 | { |
0cc7d26f | 1127 | PyObject *py_v; |
ddd49eee | 1128 | const char *name; |
0cc7d26f TT |
1129 | struct value *v; |
1130 | struct cleanup *inner; | |
1131 | int can_mention = from < 0 || i >= from; | |
1132 | ||
1133 | inner = make_cleanup_py_decref (item); | |
1134 | ||
1135 | if (!PyArg_ParseTuple (item, "sO", &name, &py_v)) | |
a4c8e806 TT |
1136 | { |
1137 | gdbpy_print_stack (); | |
1138 | error (_("Invalid item from the child list")); | |
1139 | } | |
0cc7d26f TT |
1140 | |
1141 | v = convert_value_from_python (py_v); | |
8dc78533 JK |
1142 | if (v == NULL) |
1143 | gdbpy_print_stack (); | |
0cc7d26f TT |
1144 | install_dynamic_child (var, can_mention ? changed : NULL, |
1145 | can_mention ? new : NULL, | |
1146 | can_mention ? unchanged : NULL, | |
1147 | can_mention ? cchanged : NULL, i, name, v); | |
1148 | do_cleanups (inner); | |
b6313243 | 1149 | } |
0cc7d26f | 1150 | else |
b6313243 | 1151 | { |
0cc7d26f TT |
1152 | Py_XDECREF (var->saved_item); |
1153 | var->saved_item = item; | |
b6313243 | 1154 | |
0cc7d26f TT |
1155 | /* We want to truncate the child list just before this |
1156 | element. */ | |
1157 | break; | |
1158 | } | |
a4c8e806 TT |
1159 | |
1160 | if (force_done) | |
1161 | break; | |
b6313243 TT |
1162 | } |
1163 | ||
1164 | if (i < VEC_length (varobj_p, var->children)) | |
1165 | { | |
0cc7d26f | 1166 | int j; |
a109c7c1 | 1167 | |
0cc7d26f TT |
1168 | *cchanged = 1; |
1169 | for (j = i; j < VEC_length (varobj_p, var->children); ++j) | |
1170 | varobj_delete (VEC_index (varobj_p, var->children, j), NULL, 0); | |
1171 | VEC_truncate (varobj_p, var->children, i); | |
b6313243 | 1172 | } |
0cc7d26f TT |
1173 | |
1174 | /* If there are fewer children than requested, note that the list of | |
1175 | children changed. */ | |
1176 | if (to >= 0 && VEC_length (varobj_p, var->children) < to) | |
1177 | *cchanged = 1; | |
1178 | ||
b6313243 TT |
1179 | var->num_children = VEC_length (varobj_p, var->children); |
1180 | ||
1181 | do_cleanups (back_to); | |
1182 | ||
b6313243 TT |
1183 | return 1; |
1184 | #else | |
1185 | gdb_assert (0 && "should never be called if Python is not enabled"); | |
1186 | #endif | |
1187 | } | |
25d5ea92 | 1188 | |
8b93c638 JM |
1189 | int |
1190 | varobj_get_num_children (struct varobj *var) | |
1191 | { | |
1192 | if (var->num_children == -1) | |
b6313243 | 1193 | { |
0cc7d26f TT |
1194 | if (var->pretty_printer) |
1195 | { | |
1196 | int dummy; | |
1197 | ||
1198 | /* If we have a dynamic varobj, don't report -1 children. | |
1199 | So, try to fetch some children first. */ | |
1200 | update_dynamic_varobj_children (var, NULL, NULL, NULL, &dummy, | |
1201 | 0, 0, 0); | |
1202 | } | |
1203 | else | |
b6313243 TT |
1204 | var->num_children = number_of_children (var); |
1205 | } | |
8b93c638 | 1206 | |
0cc7d26f | 1207 | return var->num_children >= 0 ? var->num_children : 0; |
8b93c638 JM |
1208 | } |
1209 | ||
1210 | /* Creates a list of the immediate children of a variable object; | |
581e13c1 | 1211 | the return code is the number of such children or -1 on error. */ |
8b93c638 | 1212 | |
d56d46f5 | 1213 | VEC (varobj_p)* |
0cc7d26f | 1214 | varobj_list_children (struct varobj *var, int *from, int *to) |
8b93c638 | 1215 | { |
8b93c638 | 1216 | char *name; |
b6313243 TT |
1217 | int i, children_changed; |
1218 | ||
1219 | var->children_requested = 1; | |
1220 | ||
0cc7d26f TT |
1221 | if (var->pretty_printer) |
1222 | { | |
b6313243 TT |
1223 | /* This, in theory, can result in the number of children changing without |
1224 | frontend noticing. But well, calling -var-list-children on the same | |
1225 | varobj twice is not something a sane frontend would do. */ | |
0cc7d26f TT |
1226 | update_dynamic_varobj_children (var, NULL, NULL, NULL, &children_changed, |
1227 | 0, 0, *to); | |
1228 | restrict_range (var->children, from, to); | |
1229 | return var->children; | |
1230 | } | |
8b93c638 | 1231 | |
8b93c638 JM |
1232 | if (var->num_children == -1) |
1233 | var->num_children = number_of_children (var); | |
1234 | ||
74a44383 DJ |
1235 | /* If that failed, give up. */ |
1236 | if (var->num_children == -1) | |
d56d46f5 | 1237 | return var->children; |
74a44383 | 1238 | |
28335dcc VP |
1239 | /* If we're called when the list of children is not yet initialized, |
1240 | allocate enough elements in it. */ | |
1241 | while (VEC_length (varobj_p, var->children) < var->num_children) | |
1242 | VEC_safe_push (varobj_p, var->children, NULL); | |
1243 | ||
8b93c638 JM |
1244 | for (i = 0; i < var->num_children; i++) |
1245 | { | |
d56d46f5 | 1246 | varobj_p existing = VEC_index (varobj_p, var->children, i); |
28335dcc VP |
1247 | |
1248 | if (existing == NULL) | |
1249 | { | |
1250 | /* Either it's the first call to varobj_list_children for | |
1251 | this variable object, and the child was never created, | |
1252 | or it was explicitly deleted by the client. */ | |
1253 | name = name_of_child (var, i); | |
1254 | existing = create_child (var, i, name); | |
1255 | VEC_replace (varobj_p, var->children, i, existing); | |
1256 | } | |
8b93c638 JM |
1257 | } |
1258 | ||
0cc7d26f | 1259 | restrict_range (var->children, from, to); |
d56d46f5 | 1260 | return var->children; |
8b93c638 JM |
1261 | } |
1262 | ||
d8b65138 JK |
1263 | #if HAVE_PYTHON |
1264 | ||
b6313243 TT |
1265 | static struct varobj * |
1266 | varobj_add_child (struct varobj *var, const char *name, struct value *value) | |
1267 | { | |
1268 | varobj_p v = create_child_with_value (var, | |
1269 | VEC_length (varobj_p, var->children), | |
1270 | name, value); | |
a109c7c1 | 1271 | |
b6313243 | 1272 | VEC_safe_push (varobj_p, var->children, v); |
b6313243 TT |
1273 | return v; |
1274 | } | |
1275 | ||
d8b65138 JK |
1276 | #endif /* HAVE_PYTHON */ |
1277 | ||
8b93c638 | 1278 | /* Obtain the type of an object Variable as a string similar to the one gdb |
581e13c1 | 1279 | prints on the console. */ |
8b93c638 JM |
1280 | |
1281 | char * | |
1282 | varobj_get_type (struct varobj *var) | |
1283 | { | |
581e13c1 | 1284 | /* For the "fake" variables, do not return a type. (It's type is |
8756216b DP |
1285 | NULL, too.) |
1286 | Do not return a type for invalid variables as well. */ | |
1287 | if (CPLUS_FAKE_CHILD (var) || !var->root->is_valid) | |
8b93c638 JM |
1288 | return NULL; |
1289 | ||
1a4300e9 | 1290 | return type_to_string (var->type); |
8b93c638 JM |
1291 | } |
1292 | ||
1ecb4ee0 DJ |
1293 | /* Obtain the type of an object variable. */ |
1294 | ||
1295 | struct type * | |
1296 | varobj_get_gdb_type (struct varobj *var) | |
1297 | { | |
1298 | return var->type; | |
1299 | } | |
1300 | ||
02142340 VP |
1301 | /* Return a pointer to the full rooted expression of varobj VAR. |
1302 | If it has not been computed yet, compute it. */ | |
1303 | char * | |
1304 | varobj_get_path_expr (struct varobj *var) | |
1305 | { | |
1306 | if (var->path_expr != NULL) | |
1307 | return var->path_expr; | |
1308 | else | |
1309 | { | |
1310 | /* For root varobjs, we initialize path_expr | |
1311 | when creating varobj, so here it should be | |
1312 | child varobj. */ | |
1313 | gdb_assert (!is_root_p (var)); | |
1314 | return (*var->root->lang->path_expr_of_child) (var); | |
1315 | } | |
1316 | } | |
1317 | ||
8b93c638 JM |
1318 | enum varobj_languages |
1319 | varobj_get_language (struct varobj *var) | |
1320 | { | |
1321 | return variable_language (var); | |
1322 | } | |
1323 | ||
1324 | int | |
1325 | varobj_get_attributes (struct varobj *var) | |
1326 | { | |
1327 | int attributes = 0; | |
1328 | ||
340a7723 | 1329 | if (varobj_editable_p (var)) |
581e13c1 | 1330 | /* FIXME: define masks for attributes. */ |
8b93c638 JM |
1331 | attributes |= 0x00000001; /* Editable */ |
1332 | ||
1333 | return attributes; | |
1334 | } | |
1335 | ||
0cc7d26f TT |
1336 | int |
1337 | varobj_pretty_printed_p (struct varobj *var) | |
1338 | { | |
1339 | return var->pretty_printer != NULL; | |
1340 | } | |
1341 | ||
de051565 MK |
1342 | char * |
1343 | varobj_get_formatted_value (struct varobj *var, | |
1344 | enum varobj_display_formats format) | |
1345 | { | |
1346 | return my_value_of_variable (var, format); | |
1347 | } | |
1348 | ||
8b93c638 JM |
1349 | char * |
1350 | varobj_get_value (struct varobj *var) | |
1351 | { | |
de051565 | 1352 | return my_value_of_variable (var, var->format); |
8b93c638 JM |
1353 | } |
1354 | ||
1355 | /* Set the value of an object variable (if it is editable) to the | |
581e13c1 MS |
1356 | value of the given expression. */ |
1357 | /* Note: Invokes functions that can call error(). */ | |
8b93c638 JM |
1358 | |
1359 | int | |
1360 | varobj_set_value (struct varobj *var, char *expression) | |
1361 | { | |
34365054 | 1362 | struct value *val = NULL; /* Initialize to keep gcc happy. */ |
8b93c638 | 1363 | /* The argument "expression" contains the variable's new value. |
581e13c1 MS |
1364 | We need to first construct a legal expression for this -- ugh! */ |
1365 | /* Does this cover all the bases? */ | |
8b93c638 | 1366 | struct expression *exp; |
34365054 | 1367 | struct value *value = NULL; /* Initialize to keep gcc happy. */ |
8b93c638 | 1368 | int saved_input_radix = input_radix; |
340a7723 | 1369 | char *s = expression; |
8e7b59a5 | 1370 | volatile struct gdb_exception except; |
8b93c638 | 1371 | |
340a7723 | 1372 | gdb_assert (varobj_editable_p (var)); |
8b93c638 | 1373 | |
581e13c1 | 1374 | input_radix = 10; /* ALWAYS reset to decimal temporarily. */ |
340a7723 | 1375 | exp = parse_exp_1 (&s, 0, 0); |
8e7b59a5 KS |
1376 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1377 | { | |
1378 | value = evaluate_expression (exp); | |
1379 | } | |
1380 | ||
1381 | if (except.reason < 0) | |
340a7723 | 1382 | { |
581e13c1 | 1383 | /* We cannot proceed without a valid expression. */ |
340a7723 NR |
1384 | xfree (exp); |
1385 | return 0; | |
8b93c638 JM |
1386 | } |
1387 | ||
340a7723 NR |
1388 | /* All types that are editable must also be changeable. */ |
1389 | gdb_assert (varobj_value_is_changeable_p (var)); | |
1390 | ||
1391 | /* The value of a changeable variable object must not be lazy. */ | |
1392 | gdb_assert (!value_lazy (var->value)); | |
1393 | ||
1394 | /* Need to coerce the input. We want to check if the | |
1395 | value of the variable object will be different | |
1396 | after assignment, and the first thing value_assign | |
1397 | does is coerce the input. | |
1398 | For example, if we are assigning an array to a pointer variable we | |
b021a221 | 1399 | should compare the pointer with the array's address, not with the |
340a7723 NR |
1400 | array's content. */ |
1401 | value = coerce_array (value); | |
1402 | ||
8e7b59a5 KS |
1403 | /* The new value may be lazy. value_assign, or |
1404 | rather value_contents, will take care of this. */ | |
1405 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1406 | { | |
1407 | val = value_assign (var->value, value); | |
1408 | } | |
1409 | ||
1410 | if (except.reason < 0) | |
340a7723 | 1411 | return 0; |
8e7b59a5 | 1412 | |
340a7723 NR |
1413 | /* If the value has changed, record it, so that next -var-update can |
1414 | report this change. If a variable had a value of '1', we've set it | |
1415 | to '333' and then set again to '1', when -var-update will report this | |
1416 | variable as changed -- because the first assignment has set the | |
1417 | 'updated' flag. There's no need to optimize that, because return value | |
1418 | of -var-update should be considered an approximation. */ | |
581e13c1 | 1419 | var->updated = install_new_value (var, val, 0 /* Compare values. */); |
340a7723 NR |
1420 | input_radix = saved_input_radix; |
1421 | return 1; | |
8b93c638 JM |
1422 | } |
1423 | ||
0cc7d26f TT |
1424 | #if HAVE_PYTHON |
1425 | ||
1426 | /* A helper function to install a constructor function and visualizer | |
1427 | in a varobj. */ | |
1428 | ||
1429 | static void | |
1430 | install_visualizer (struct varobj *var, PyObject *constructor, | |
1431 | PyObject *visualizer) | |
1432 | { | |
1433 | Py_XDECREF (var->constructor); | |
1434 | var->constructor = constructor; | |
1435 | ||
1436 | Py_XDECREF (var->pretty_printer); | |
1437 | var->pretty_printer = visualizer; | |
1438 | ||
1439 | Py_XDECREF (var->child_iter); | |
1440 | var->child_iter = NULL; | |
1441 | } | |
1442 | ||
1443 | /* Install the default visualizer for VAR. */ | |
1444 | ||
1445 | static void | |
1446 | install_default_visualizer (struct varobj *var) | |
1447 | { | |
d65aec65 PM |
1448 | /* Do not install a visualizer on a CPLUS_FAKE_CHILD. */ |
1449 | if (CPLUS_FAKE_CHILD (var)) | |
1450 | return; | |
1451 | ||
0cc7d26f TT |
1452 | if (pretty_printing) |
1453 | { | |
1454 | PyObject *pretty_printer = NULL; | |
1455 | ||
1456 | if (var->value) | |
1457 | { | |
1458 | pretty_printer = gdbpy_get_varobj_pretty_printer (var->value); | |
1459 | if (! pretty_printer) | |
1460 | { | |
1461 | gdbpy_print_stack (); | |
1462 | error (_("Cannot instantiate printer for default visualizer")); | |
1463 | } | |
1464 | } | |
1465 | ||
1466 | if (pretty_printer == Py_None) | |
1467 | { | |
1468 | Py_DECREF (pretty_printer); | |
1469 | pretty_printer = NULL; | |
1470 | } | |
1471 | ||
1472 | install_visualizer (var, NULL, pretty_printer); | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | /* Instantiate and install a visualizer for VAR using CONSTRUCTOR to | |
1477 | make a new object. */ | |
1478 | ||
1479 | static void | |
1480 | construct_visualizer (struct varobj *var, PyObject *constructor) | |
1481 | { | |
1482 | PyObject *pretty_printer; | |
1483 | ||
d65aec65 PM |
1484 | /* Do not install a visualizer on a CPLUS_FAKE_CHILD. */ |
1485 | if (CPLUS_FAKE_CHILD (var)) | |
1486 | return; | |
1487 | ||
0cc7d26f TT |
1488 | Py_INCREF (constructor); |
1489 | if (constructor == Py_None) | |
1490 | pretty_printer = NULL; | |
1491 | else | |
1492 | { | |
1493 | pretty_printer = instantiate_pretty_printer (constructor, var->value); | |
1494 | if (! pretty_printer) | |
1495 | { | |
1496 | gdbpy_print_stack (); | |
1497 | Py_DECREF (constructor); | |
1498 | constructor = Py_None; | |
1499 | Py_INCREF (constructor); | |
1500 | } | |
1501 | ||
1502 | if (pretty_printer == Py_None) | |
1503 | { | |
1504 | Py_DECREF (pretty_printer); | |
1505 | pretty_printer = NULL; | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | install_visualizer (var, constructor, pretty_printer); | |
1510 | } | |
1511 | ||
1512 | #endif /* HAVE_PYTHON */ | |
1513 | ||
1514 | /* A helper function for install_new_value. This creates and installs | |
1515 | a visualizer for VAR, if appropriate. */ | |
1516 | ||
1517 | static void | |
1518 | install_new_value_visualizer (struct varobj *var) | |
1519 | { | |
1520 | #if HAVE_PYTHON | |
1521 | /* If the constructor is None, then we want the raw value. If VAR | |
1522 | does not have a value, just skip this. */ | |
1523 | if (var->constructor != Py_None && var->value) | |
1524 | { | |
1525 | struct cleanup *cleanup; | |
0cc7d26f TT |
1526 | |
1527 | cleanup = varobj_ensure_python_env (var); | |
1528 | ||
1529 | if (!var->constructor) | |
1530 | install_default_visualizer (var); | |
1531 | else | |
1532 | construct_visualizer (var, var->constructor); | |
1533 | ||
1534 | do_cleanups (cleanup); | |
1535 | } | |
1536 | #else | |
1537 | /* Do nothing. */ | |
1538 | #endif | |
1539 | } | |
1540 | ||
acd65feb VP |
1541 | /* Assign a new value to a variable object. If INITIAL is non-zero, |
1542 | this is the first assignement after the variable object was just | |
1543 | created, or changed type. In that case, just assign the value | |
1544 | and return 0. | |
581e13c1 MS |
1545 | Otherwise, assign the new value, and return 1 if the value is |
1546 | different from the current one, 0 otherwise. The comparison is | |
1547 | done on textual representation of value. Therefore, some types | |
1548 | need not be compared. E.g. for structures the reported value is | |
1549 | always "{...}", so no comparison is necessary here. If the old | |
1550 | value was NULL and new one is not, or vice versa, we always return 1. | |
b26ed50d VP |
1551 | |
1552 | The VALUE parameter should not be released -- the function will | |
1553 | take care of releasing it when needed. */ | |
acd65feb VP |
1554 | static int |
1555 | install_new_value (struct varobj *var, struct value *value, int initial) | |
1556 | { | |
1557 | int changeable; | |
1558 | int need_to_fetch; | |
1559 | int changed = 0; | |
25d5ea92 | 1560 | int intentionally_not_fetched = 0; |
7a4d50bf | 1561 | char *print_value = NULL; |
acd65feb | 1562 | |
acd65feb | 1563 | /* We need to know the varobj's type to decide if the value should |
3e43a32a | 1564 | be fetched or not. C++ fake children (public/protected/private) |
581e13c1 | 1565 | don't have a type. */ |
acd65feb | 1566 | gdb_assert (var->type || CPLUS_FAKE_CHILD (var)); |
b2c2bd75 | 1567 | changeable = varobj_value_is_changeable_p (var); |
b6313243 TT |
1568 | |
1569 | /* If the type has custom visualizer, we consider it to be always | |
581e13c1 | 1570 | changeable. FIXME: need to make sure this behaviour will not |
b6313243 TT |
1571 | mess up read-sensitive values. */ |
1572 | if (var->pretty_printer) | |
1573 | changeable = 1; | |
1574 | ||
acd65feb VP |
1575 | need_to_fetch = changeable; |
1576 | ||
b26ed50d VP |
1577 | /* We are not interested in the address of references, and given |
1578 | that in C++ a reference is not rebindable, it cannot | |
1579 | meaningfully change. So, get hold of the real value. */ | |
1580 | if (value) | |
0cc7d26f | 1581 | value = coerce_ref (value); |
b26ed50d | 1582 | |
acd65feb VP |
1583 | if (var->type && TYPE_CODE (var->type) == TYPE_CODE_UNION) |
1584 | /* For unions, we need to fetch the value implicitly because | |
1585 | of implementation of union member fetch. When gdb | |
1586 | creates a value for a field and the value of the enclosing | |
1587 | structure is not lazy, it immediately copies the necessary | |
1588 | bytes from the enclosing values. If the enclosing value is | |
1589 | lazy, the call to value_fetch_lazy on the field will read | |
1590 | the data from memory. For unions, that means we'll read the | |
1591 | same memory more than once, which is not desirable. So | |
1592 | fetch now. */ | |
1593 | need_to_fetch = 1; | |
1594 | ||
1595 | /* The new value might be lazy. If the type is changeable, | |
1596 | that is we'll be comparing values of this type, fetch the | |
1597 | value now. Otherwise, on the next update the old value | |
1598 | will be lazy, which means we've lost that old value. */ | |
1599 | if (need_to_fetch && value && value_lazy (value)) | |
1600 | { | |
25d5ea92 VP |
1601 | struct varobj *parent = var->parent; |
1602 | int frozen = var->frozen; | |
a109c7c1 | 1603 | |
25d5ea92 VP |
1604 | for (; !frozen && parent; parent = parent->parent) |
1605 | frozen |= parent->frozen; | |
1606 | ||
1607 | if (frozen && initial) | |
1608 | { | |
1609 | /* For variables that are frozen, or are children of frozen | |
1610 | variables, we don't do fetch on initial assignment. | |
1611 | For non-initial assignemnt we do the fetch, since it means we're | |
1612 | explicitly asked to compare the new value with the old one. */ | |
1613 | intentionally_not_fetched = 1; | |
1614 | } | |
8e7b59a5 | 1615 | else |
acd65feb | 1616 | { |
8e7b59a5 KS |
1617 | volatile struct gdb_exception except; |
1618 | ||
1619 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1620 | { | |
1621 | value_fetch_lazy (value); | |
1622 | } | |
1623 | ||
1624 | if (except.reason < 0) | |
1625 | { | |
1626 | /* Set the value to NULL, so that for the next -var-update, | |
1627 | we don't try to compare the new value with this value, | |
1628 | that we couldn't even read. */ | |
1629 | value = NULL; | |
1630 | } | |
acd65feb | 1631 | } |
acd65feb VP |
1632 | } |
1633 | ||
e848a8a5 TT |
1634 | /* Get a reference now, before possibly passing it to any Python |
1635 | code that might release it. */ | |
1636 | if (value != NULL) | |
1637 | value_incref (value); | |
b6313243 | 1638 | |
7a4d50bf VP |
1639 | /* Below, we'll be comparing string rendering of old and new |
1640 | values. Don't get string rendering if the value is | |
1641 | lazy -- if it is, the code above has decided that the value | |
1642 | should not be fetched. */ | |
0cc7d26f | 1643 | if (value && !value_lazy (value) && !var->pretty_printer) |
d452c4bc | 1644 | print_value = value_get_print_value (value, var->format, var); |
7a4d50bf | 1645 | |
acd65feb VP |
1646 | /* If the type is changeable, compare the old and the new values. |
1647 | If this is the initial assignment, we don't have any old value | |
1648 | to compare with. */ | |
7a4d50bf | 1649 | if (!initial && changeable) |
acd65feb | 1650 | { |
3e43a32a MS |
1651 | /* If the value of the varobj was changed by -var-set-value, |
1652 | then the value in the varobj and in the target is the same. | |
1653 | However, that value is different from the value that the | |
581e13c1 | 1654 | varobj had after the previous -var-update. So need to the |
3e43a32a | 1655 | varobj as changed. */ |
acd65feb | 1656 | if (var->updated) |
57e66780 | 1657 | { |
57e66780 DJ |
1658 | changed = 1; |
1659 | } | |
0cc7d26f | 1660 | else if (! var->pretty_printer) |
acd65feb VP |
1661 | { |
1662 | /* Try to compare the values. That requires that both | |
1663 | values are non-lazy. */ | |
25d5ea92 VP |
1664 | if (var->not_fetched && value_lazy (var->value)) |
1665 | { | |
1666 | /* This is a frozen varobj and the value was never read. | |
1667 | Presumably, UI shows some "never read" indicator. | |
1668 | Now that we've fetched the real value, we need to report | |
1669 | this varobj as changed so that UI can show the real | |
1670 | value. */ | |
1671 | changed = 1; | |
1672 | } | |
1673 | else if (var->value == NULL && value == NULL) | |
581e13c1 | 1674 | /* Equal. */ |
acd65feb VP |
1675 | ; |
1676 | else if (var->value == NULL || value == NULL) | |
57e66780 | 1677 | { |
57e66780 DJ |
1678 | changed = 1; |
1679 | } | |
acd65feb VP |
1680 | else |
1681 | { | |
1682 | gdb_assert (!value_lazy (var->value)); | |
1683 | gdb_assert (!value_lazy (value)); | |
85265413 | 1684 | |
57e66780 | 1685 | gdb_assert (var->print_value != NULL && print_value != NULL); |
85265413 | 1686 | if (strcmp (var->print_value, print_value) != 0) |
7a4d50bf | 1687 | changed = 1; |
acd65feb VP |
1688 | } |
1689 | } | |
1690 | } | |
85265413 | 1691 | |
ee342b23 VP |
1692 | if (!initial && !changeable) |
1693 | { | |
1694 | /* For values that are not changeable, we don't compare the values. | |
1695 | However, we want to notice if a value was not NULL and now is NULL, | |
1696 | or vise versa, so that we report when top-level varobjs come in scope | |
1697 | and leave the scope. */ | |
1698 | changed = (var->value != NULL) != (value != NULL); | |
1699 | } | |
1700 | ||
acd65feb | 1701 | /* We must always keep the new value, since children depend on it. */ |
25d5ea92 | 1702 | if (var->value != NULL && var->value != value) |
acd65feb VP |
1703 | value_free (var->value); |
1704 | var->value = value; | |
25d5ea92 VP |
1705 | if (value && value_lazy (value) && intentionally_not_fetched) |
1706 | var->not_fetched = 1; | |
1707 | else | |
1708 | var->not_fetched = 0; | |
acd65feb | 1709 | var->updated = 0; |
85265413 | 1710 | |
0cc7d26f TT |
1711 | install_new_value_visualizer (var); |
1712 | ||
1713 | /* If we installed a pretty-printer, re-compare the printed version | |
1714 | to see if the variable changed. */ | |
1715 | if (var->pretty_printer) | |
1716 | { | |
1717 | xfree (print_value); | |
1718 | print_value = value_get_print_value (var->value, var->format, var); | |
e8f781e2 TT |
1719 | if ((var->print_value == NULL && print_value != NULL) |
1720 | || (var->print_value != NULL && print_value == NULL) | |
1721 | || (var->print_value != NULL && print_value != NULL | |
1722 | && strcmp (var->print_value, print_value) != 0)) | |
0cc7d26f TT |
1723 | changed = 1; |
1724 | } | |
1725 | if (var->print_value) | |
1726 | xfree (var->print_value); | |
1727 | var->print_value = print_value; | |
1728 | ||
b26ed50d | 1729 | gdb_assert (!var->value || value_type (var->value)); |
acd65feb VP |
1730 | |
1731 | return changed; | |
1732 | } | |
acd65feb | 1733 | |
0cc7d26f TT |
1734 | /* Return the requested range for a varobj. VAR is the varobj. FROM |
1735 | and TO are out parameters; *FROM and *TO will be set to the | |
1736 | selected sub-range of VAR. If no range was selected using | |
1737 | -var-set-update-range, then both will be -1. */ | |
1738 | void | |
1739 | varobj_get_child_range (struct varobj *var, int *from, int *to) | |
b6313243 | 1740 | { |
0cc7d26f TT |
1741 | *from = var->from; |
1742 | *to = var->to; | |
b6313243 TT |
1743 | } |
1744 | ||
0cc7d26f TT |
1745 | /* Set the selected sub-range of children of VAR to start at index |
1746 | FROM and end at index TO. If either FROM or TO is less than zero, | |
1747 | this is interpreted as a request for all children. */ | |
1748 | void | |
1749 | varobj_set_child_range (struct varobj *var, int from, int to) | |
b6313243 | 1750 | { |
0cc7d26f TT |
1751 | var->from = from; |
1752 | var->to = to; | |
b6313243 TT |
1753 | } |
1754 | ||
1755 | void | |
1756 | varobj_set_visualizer (struct varobj *var, const char *visualizer) | |
1757 | { | |
1758 | #if HAVE_PYTHON | |
34fa1d9d MS |
1759 | PyObject *mainmod, *globals, *constructor; |
1760 | struct cleanup *back_to; | |
b6313243 | 1761 | |
d452c4bc | 1762 | back_to = varobj_ensure_python_env (var); |
b6313243 TT |
1763 | |
1764 | mainmod = PyImport_AddModule ("__main__"); | |
1765 | globals = PyModule_GetDict (mainmod); | |
1766 | Py_INCREF (globals); | |
1767 | make_cleanup_py_decref (globals); | |
1768 | ||
1769 | constructor = PyRun_String (visualizer, Py_eval_input, globals, globals); | |
b6313243 | 1770 | |
0cc7d26f | 1771 | if (! constructor) |
b6313243 TT |
1772 | { |
1773 | gdbpy_print_stack (); | |
da1f2771 | 1774 | error (_("Could not evaluate visualizer expression: %s"), visualizer); |
b6313243 TT |
1775 | } |
1776 | ||
0cc7d26f TT |
1777 | construct_visualizer (var, constructor); |
1778 | Py_XDECREF (constructor); | |
b6313243 | 1779 | |
0cc7d26f TT |
1780 | /* If there are any children now, wipe them. */ |
1781 | varobj_delete (var, NULL, 1 /* children only */); | |
1782 | var->num_children = -1; | |
b6313243 TT |
1783 | |
1784 | do_cleanups (back_to); | |
1785 | #else | |
da1f2771 | 1786 | error (_("Python support required")); |
b6313243 TT |
1787 | #endif |
1788 | } | |
1789 | ||
8b93c638 JM |
1790 | /* Update the values for a variable and its children. This is a |
1791 | two-pronged attack. First, re-parse the value for the root's | |
1792 | expression to see if it's changed. Then go all the way | |
1793 | through its children, reconstructing them and noting if they've | |
1794 | changed. | |
1795 | ||
25d5ea92 VP |
1796 | The EXPLICIT parameter specifies if this call is result |
1797 | of MI request to update this specific variable, or | |
581e13c1 | 1798 | result of implicit -var-update *. For implicit request, we don't |
25d5ea92 | 1799 | update frozen variables. |
705da579 | 1800 | |
581e13c1 | 1801 | NOTE: This function may delete the caller's varobj. If it |
8756216b DP |
1802 | returns TYPE_CHANGED, then it has done this and VARP will be modified |
1803 | to point to the new varobj. */ | |
8b93c638 | 1804 | |
1417b39d JB |
1805 | VEC(varobj_update_result) * |
1806 | varobj_update (struct varobj **varp, int explicit) | |
8b93c638 JM |
1807 | { |
1808 | int changed = 0; | |
25d5ea92 | 1809 | int type_changed = 0; |
8b93c638 | 1810 | int i; |
30b28db1 | 1811 | struct value *new; |
b6313243 | 1812 | VEC (varobj_update_result) *stack = NULL; |
f7f9ae2c | 1813 | VEC (varobj_update_result) *result = NULL; |
8b93c638 | 1814 | |
25d5ea92 VP |
1815 | /* Frozen means frozen -- we don't check for any change in |
1816 | this varobj, including its going out of scope, or | |
1817 | changing type. One use case for frozen varobjs is | |
1818 | retaining previously evaluated expressions, and we don't | |
1819 | want them to be reevaluated at all. */ | |
1820 | if (!explicit && (*varp)->frozen) | |
f7f9ae2c | 1821 | return result; |
8756216b DP |
1822 | |
1823 | if (!(*varp)->root->is_valid) | |
f7f9ae2c | 1824 | { |
cfce2ea2 | 1825 | varobj_update_result r = {0}; |
a109c7c1 | 1826 | |
cfce2ea2 | 1827 | r.varobj = *varp; |
f7f9ae2c VP |
1828 | r.status = VAROBJ_INVALID; |
1829 | VEC_safe_push (varobj_update_result, result, &r); | |
1830 | return result; | |
1831 | } | |
8b93c638 | 1832 | |
25d5ea92 | 1833 | if ((*varp)->root->rootvar == *varp) |
ae093f96 | 1834 | { |
cfce2ea2 | 1835 | varobj_update_result r = {0}; |
a109c7c1 | 1836 | |
cfce2ea2 | 1837 | r.varobj = *varp; |
f7f9ae2c VP |
1838 | r.status = VAROBJ_IN_SCOPE; |
1839 | ||
581e13c1 | 1840 | /* Update the root variable. value_of_root can return NULL |
25d5ea92 | 1841 | if the variable is no longer around, i.e. we stepped out of |
581e13c1 | 1842 | the frame in which a local existed. We are letting the |
25d5ea92 VP |
1843 | value_of_root variable dispose of the varobj if the type |
1844 | has changed. */ | |
25d5ea92 | 1845 | new = value_of_root (varp, &type_changed); |
f7f9ae2c VP |
1846 | r.varobj = *varp; |
1847 | ||
1848 | r.type_changed = type_changed; | |
ea56f9c2 | 1849 | if (install_new_value ((*varp), new, type_changed)) |
f7f9ae2c | 1850 | r.changed = 1; |
ea56f9c2 | 1851 | |
25d5ea92 | 1852 | if (new == NULL) |
f7f9ae2c | 1853 | r.status = VAROBJ_NOT_IN_SCOPE; |
b6313243 | 1854 | r.value_installed = 1; |
f7f9ae2c VP |
1855 | |
1856 | if (r.status == VAROBJ_NOT_IN_SCOPE) | |
b6313243 | 1857 | { |
0b4bc29a JK |
1858 | if (r.type_changed || r.changed) |
1859 | VEC_safe_push (varobj_update_result, result, &r); | |
b6313243 TT |
1860 | return result; |
1861 | } | |
1862 | ||
1863 | VEC_safe_push (varobj_update_result, stack, &r); | |
1864 | } | |
1865 | else | |
1866 | { | |
cfce2ea2 | 1867 | varobj_update_result r = {0}; |
a109c7c1 | 1868 | |
cfce2ea2 | 1869 | r.varobj = *varp; |
b6313243 | 1870 | VEC_safe_push (varobj_update_result, stack, &r); |
b20d8971 | 1871 | } |
8b93c638 | 1872 | |
8756216b | 1873 | /* Walk through the children, reconstructing them all. */ |
b6313243 | 1874 | while (!VEC_empty (varobj_update_result, stack)) |
8b93c638 | 1875 | { |
b6313243 TT |
1876 | varobj_update_result r = *(VEC_last (varobj_update_result, stack)); |
1877 | struct varobj *v = r.varobj; | |
1878 | ||
1879 | VEC_pop (varobj_update_result, stack); | |
1880 | ||
1881 | /* Update this variable, unless it's a root, which is already | |
1882 | updated. */ | |
1883 | if (!r.value_installed) | |
1884 | { | |
1885 | new = value_of_child (v->parent, v->index); | |
1886 | if (install_new_value (v, new, 0 /* type not changed */)) | |
1887 | { | |
1888 | r.changed = 1; | |
1889 | v->updated = 0; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /* We probably should not get children of a varobj that has a | |
1894 | pretty-printer, but for which -var-list-children was never | |
581e13c1 | 1895 | invoked. */ |
b6313243 TT |
1896 | if (v->pretty_printer) |
1897 | { | |
0cc7d26f | 1898 | VEC (varobj_p) *changed = 0, *new = 0, *unchanged = 0; |
26f9bcee | 1899 | int i, children_changed = 0; |
b6313243 TT |
1900 | |
1901 | if (v->frozen) | |
1902 | continue; | |
1903 | ||
0cc7d26f TT |
1904 | if (!v->children_requested) |
1905 | { | |
1906 | int dummy; | |
1907 | ||
1908 | /* If we initially did not have potential children, but | |
1909 | now we do, consider the varobj as changed. | |
1910 | Otherwise, if children were never requested, consider | |
1911 | it as unchanged -- presumably, such varobj is not yet | |
1912 | expanded in the UI, so we need not bother getting | |
1913 | it. */ | |
1914 | if (!varobj_has_more (v, 0)) | |
1915 | { | |
1916 | update_dynamic_varobj_children (v, NULL, NULL, NULL, | |
1917 | &dummy, 0, 0, 0); | |
1918 | if (varobj_has_more (v, 0)) | |
1919 | r.changed = 1; | |
1920 | } | |
1921 | ||
1922 | if (r.changed) | |
1923 | VEC_safe_push (varobj_update_result, result, &r); | |
1924 | ||
1925 | continue; | |
1926 | } | |
1927 | ||
b6313243 TT |
1928 | /* If update_dynamic_varobj_children returns 0, then we have |
1929 | a non-conforming pretty-printer, so we skip it. */ | |
0cc7d26f TT |
1930 | if (update_dynamic_varobj_children (v, &changed, &new, &unchanged, |
1931 | &children_changed, 1, | |
1932 | v->from, v->to)) | |
b6313243 | 1933 | { |
0cc7d26f | 1934 | if (children_changed || new) |
b6313243 | 1935 | { |
0cc7d26f TT |
1936 | r.children_changed = 1; |
1937 | r.new = new; | |
b6313243 | 1938 | } |
0cc7d26f TT |
1939 | /* Push in reverse order so that the first child is |
1940 | popped from the work stack first, and so will be | |
1941 | added to result first. This does not affect | |
1942 | correctness, just "nicer". */ | |
1943 | for (i = VEC_length (varobj_p, changed) - 1; i >= 0; --i) | |
b6313243 | 1944 | { |
0cc7d26f | 1945 | varobj_p tmp = VEC_index (varobj_p, changed, i); |
cfce2ea2 | 1946 | varobj_update_result r = {0}; |
a109c7c1 | 1947 | |
cfce2ea2 | 1948 | r.varobj = tmp; |
0cc7d26f | 1949 | r.changed = 1; |
b6313243 TT |
1950 | r.value_installed = 1; |
1951 | VEC_safe_push (varobj_update_result, stack, &r); | |
1952 | } | |
0cc7d26f TT |
1953 | for (i = VEC_length (varobj_p, unchanged) - 1; i >= 0; --i) |
1954 | { | |
1955 | varobj_p tmp = VEC_index (varobj_p, unchanged, i); | |
a109c7c1 | 1956 | |
0cc7d26f TT |
1957 | if (!tmp->frozen) |
1958 | { | |
cfce2ea2 | 1959 | varobj_update_result r = {0}; |
a109c7c1 | 1960 | |
cfce2ea2 | 1961 | r.varobj = tmp; |
0cc7d26f TT |
1962 | r.value_installed = 1; |
1963 | VEC_safe_push (varobj_update_result, stack, &r); | |
1964 | } | |
1965 | } | |
b6313243 TT |
1966 | if (r.changed || r.children_changed) |
1967 | VEC_safe_push (varobj_update_result, result, &r); | |
0cc7d26f TT |
1968 | |
1969 | /* Free CHANGED and UNCHANGED, but not NEW, because NEW | |
1970 | has been put into the result vector. */ | |
1971 | VEC_free (varobj_p, changed); | |
1972 | VEC_free (varobj_p, unchanged); | |
1973 | ||
b6313243 TT |
1974 | continue; |
1975 | } | |
1976 | } | |
28335dcc VP |
1977 | |
1978 | /* Push any children. Use reverse order so that the first | |
1979 | child is popped from the work stack first, and so | |
1980 | will be added to result first. This does not | |
1981 | affect correctness, just "nicer". */ | |
1982 | for (i = VEC_length (varobj_p, v->children)-1; i >= 0; --i) | |
8b93c638 | 1983 | { |
28335dcc | 1984 | varobj_p c = VEC_index (varobj_p, v->children, i); |
a109c7c1 | 1985 | |
28335dcc | 1986 | /* Child may be NULL if explicitly deleted by -var-delete. */ |
25d5ea92 | 1987 | if (c != NULL && !c->frozen) |
28335dcc | 1988 | { |
cfce2ea2 | 1989 | varobj_update_result r = {0}; |
a109c7c1 | 1990 | |
cfce2ea2 | 1991 | r.varobj = c; |
b6313243 | 1992 | VEC_safe_push (varobj_update_result, stack, &r); |
28335dcc | 1993 | } |
8b93c638 | 1994 | } |
b6313243 TT |
1995 | |
1996 | if (r.changed || r.type_changed) | |
1997 | VEC_safe_push (varobj_update_result, result, &r); | |
8b93c638 JM |
1998 | } |
1999 | ||
b6313243 TT |
2000 | VEC_free (varobj_update_result, stack); |
2001 | ||
f7f9ae2c | 2002 | return result; |
8b93c638 JM |
2003 | } |
2004 | \f | |
2005 | ||
2006 | /* Helper functions */ | |
2007 | ||
2008 | /* | |
2009 | * Variable object construction/destruction | |
2010 | */ | |
2011 | ||
2012 | static int | |
fba45db2 KB |
2013 | delete_variable (struct cpstack **resultp, struct varobj *var, |
2014 | int only_children_p) | |
8b93c638 JM |
2015 | { |
2016 | int delcount = 0; | |
2017 | ||
2018 | delete_variable_1 (resultp, &delcount, var, | |
2019 | only_children_p, 1 /* remove_from_parent_p */ ); | |
2020 | ||
2021 | return delcount; | |
2022 | } | |
2023 | ||
581e13c1 | 2024 | /* Delete the variable object VAR and its children. */ |
8b93c638 JM |
2025 | /* IMPORTANT NOTE: If we delete a variable which is a child |
2026 | and the parent is not removed we dump core. It must be always | |
581e13c1 | 2027 | initially called with remove_from_parent_p set. */ |
8b93c638 | 2028 | static void |
72330bd6 AC |
2029 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
2030 | struct varobj *var, int only_children_p, | |
2031 | int remove_from_parent_p) | |
8b93c638 | 2032 | { |
28335dcc | 2033 | int i; |
8b93c638 | 2034 | |
581e13c1 | 2035 | /* Delete any children of this variable, too. */ |
28335dcc VP |
2036 | for (i = 0; i < VEC_length (varobj_p, var->children); ++i) |
2037 | { | |
2038 | varobj_p child = VEC_index (varobj_p, var->children, i); | |
a109c7c1 | 2039 | |
214270ab VP |
2040 | if (!child) |
2041 | continue; | |
8b93c638 | 2042 | if (!remove_from_parent_p) |
28335dcc VP |
2043 | child->parent = NULL; |
2044 | delete_variable_1 (resultp, delcountp, child, 0, only_children_p); | |
8b93c638 | 2045 | } |
28335dcc | 2046 | VEC_free (varobj_p, var->children); |
8b93c638 | 2047 | |
581e13c1 | 2048 | /* if we were called to delete only the children we are done here. */ |
8b93c638 JM |
2049 | if (only_children_p) |
2050 | return; | |
2051 | ||
581e13c1 | 2052 | /* Otherwise, add it to the list of deleted ones and proceed to do so. */ |
73a93a32 | 2053 | /* If the name is null, this is a temporary variable, that has not |
581e13c1 | 2054 | yet been installed, don't report it, it belongs to the caller... */ |
73a93a32 | 2055 | if (var->obj_name != NULL) |
8b93c638 | 2056 | { |
5b616ba1 | 2057 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
2058 | *delcountp = *delcountp + 1; |
2059 | } | |
2060 | ||
581e13c1 | 2061 | /* If this variable has a parent, remove it from its parent's list. */ |
8b93c638 JM |
2062 | /* OPTIMIZATION: if the parent of this variable is also being deleted, |
2063 | (as indicated by remove_from_parent_p) we don't bother doing an | |
2064 | expensive list search to find the element to remove when we are | |
581e13c1 | 2065 | discarding the list afterwards. */ |
72330bd6 | 2066 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 | 2067 | { |
28335dcc | 2068 | VEC_replace (varobj_p, var->parent->children, var->index, NULL); |
8b93c638 | 2069 | } |
72330bd6 | 2070 | |
73a93a32 JI |
2071 | if (var->obj_name != NULL) |
2072 | uninstall_variable (var); | |
8b93c638 | 2073 | |
581e13c1 | 2074 | /* Free memory associated with this variable. */ |
8b93c638 JM |
2075 | free_variable (var); |
2076 | } | |
2077 | ||
581e13c1 | 2078 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ |
8b93c638 | 2079 | static int |
fba45db2 | 2080 | install_variable (struct varobj *var) |
8b93c638 JM |
2081 | { |
2082 | struct vlist *cv; | |
2083 | struct vlist *newvl; | |
2084 | const char *chp; | |
2085 | unsigned int index = 0; | |
2086 | unsigned int i = 1; | |
2087 | ||
2088 | for (chp = var->obj_name; *chp; chp++) | |
2089 | { | |
2090 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
2091 | } | |
2092 | ||
2093 | cv = *(varobj_table + index); | |
2094 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
2095 | cv = cv->next; | |
2096 | ||
2097 | if (cv != NULL) | |
8a3fe4f8 | 2098 | error (_("Duplicate variable object name")); |
8b93c638 | 2099 | |
581e13c1 | 2100 | /* Add varobj to hash table. */ |
8b93c638 JM |
2101 | newvl = xmalloc (sizeof (struct vlist)); |
2102 | newvl->next = *(varobj_table + index); | |
2103 | newvl->var = var; | |
2104 | *(varobj_table + index) = newvl; | |
2105 | ||
581e13c1 | 2106 | /* If root, add varobj to root list. */ |
b2c2bd75 | 2107 | if (is_root_p (var)) |
8b93c638 | 2108 | { |
581e13c1 | 2109 | /* Add to list of root variables. */ |
8b93c638 JM |
2110 | if (rootlist == NULL) |
2111 | var->root->next = NULL; | |
2112 | else | |
2113 | var->root->next = rootlist; | |
2114 | rootlist = var->root; | |
8b93c638 JM |
2115 | } |
2116 | ||
2117 | return 1; /* OK */ | |
2118 | } | |
2119 | ||
581e13c1 | 2120 | /* Unistall the object VAR. */ |
8b93c638 | 2121 | static void |
fba45db2 | 2122 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
2123 | { |
2124 | struct vlist *cv; | |
2125 | struct vlist *prev; | |
2126 | struct varobj_root *cr; | |
2127 | struct varobj_root *prer; | |
2128 | const char *chp; | |
2129 | unsigned int index = 0; | |
2130 | unsigned int i = 1; | |
2131 | ||
581e13c1 | 2132 | /* Remove varobj from hash table. */ |
8b93c638 JM |
2133 | for (chp = var->obj_name; *chp; chp++) |
2134 | { | |
2135 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
2136 | } | |
2137 | ||
2138 | cv = *(varobj_table + index); | |
2139 | prev = NULL; | |
2140 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
2141 | { | |
2142 | prev = cv; | |
2143 | cv = cv->next; | |
2144 | } | |
2145 | ||
2146 | if (varobjdebug) | |
2147 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
2148 | ||
2149 | if (cv == NULL) | |
2150 | { | |
72330bd6 AC |
2151 | warning |
2152 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
2153 | var->obj_name); | |
8b93c638 JM |
2154 | return; |
2155 | } | |
2156 | ||
2157 | if (prev == NULL) | |
2158 | *(varobj_table + index) = cv->next; | |
2159 | else | |
2160 | prev->next = cv->next; | |
2161 | ||
b8c9b27d | 2162 | xfree (cv); |
8b93c638 | 2163 | |
581e13c1 | 2164 | /* If root, remove varobj from root list. */ |
b2c2bd75 | 2165 | if (is_root_p (var)) |
8b93c638 | 2166 | { |
581e13c1 | 2167 | /* Remove from list of root variables. */ |
8b93c638 JM |
2168 | if (rootlist == var->root) |
2169 | rootlist = var->root->next; | |
2170 | else | |
2171 | { | |
2172 | prer = NULL; | |
2173 | cr = rootlist; | |
2174 | while ((cr != NULL) && (cr->rootvar != var)) | |
2175 | { | |
2176 | prer = cr; | |
2177 | cr = cr->next; | |
2178 | } | |
2179 | if (cr == NULL) | |
2180 | { | |
8f7e195f JB |
2181 | warning (_("Assertion failed: Could not find " |
2182 | "varobj \"%s\" in root list"), | |
3e43a32a | 2183 | var->obj_name); |
8b93c638 JM |
2184 | return; |
2185 | } | |
2186 | if (prer == NULL) | |
2187 | rootlist = NULL; | |
2188 | else | |
2189 | prer->next = cr->next; | |
2190 | } | |
8b93c638 JM |
2191 | } |
2192 | ||
2193 | } | |
2194 | ||
581e13c1 | 2195 | /* Create and install a child of the parent of the given name. */ |
8b93c638 | 2196 | static struct varobj * |
fba45db2 | 2197 | create_child (struct varobj *parent, int index, char *name) |
b6313243 TT |
2198 | { |
2199 | return create_child_with_value (parent, index, name, | |
2200 | value_of_child (parent, index)); | |
2201 | } | |
2202 | ||
2203 | static struct varobj * | |
2204 | create_child_with_value (struct varobj *parent, int index, const char *name, | |
2205 | struct value *value) | |
8b93c638 JM |
2206 | { |
2207 | struct varobj *child; | |
2208 | char *childs_name; | |
2209 | ||
2210 | child = new_variable (); | |
2211 | ||
581e13c1 | 2212 | /* Name is allocated by name_of_child. */ |
b6313243 TT |
2213 | /* FIXME: xstrdup should not be here. */ |
2214 | child->name = xstrdup (name); | |
8b93c638 | 2215 | child->index = index; |
8b93c638 JM |
2216 | child->parent = parent; |
2217 | child->root = parent->root; | |
b435e160 | 2218 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); |
8b93c638 JM |
2219 | child->obj_name = childs_name; |
2220 | install_variable (child); | |
2221 | ||
acd65feb VP |
2222 | /* Compute the type of the child. Must do this before |
2223 | calling install_new_value. */ | |
2224 | if (value != NULL) | |
2225 | /* If the child had no evaluation errors, var->value | |
581e13c1 | 2226 | will be non-NULL and contain a valid type. */ |
acd65feb VP |
2227 | child->type = value_type (value); |
2228 | else | |
581e13c1 | 2229 | /* Otherwise, we must compute the type. */ |
acd65feb VP |
2230 | child->type = (*child->root->lang->type_of_child) (child->parent, |
2231 | child->index); | |
2232 | install_new_value (child, value, 1); | |
2233 | ||
8b93c638 JM |
2234 | return child; |
2235 | } | |
8b93c638 JM |
2236 | \f |
2237 | ||
2238 | /* | |
2239 | * Miscellaneous utility functions. | |
2240 | */ | |
2241 | ||
581e13c1 | 2242 | /* Allocate memory and initialize a new variable. */ |
8b93c638 JM |
2243 | static struct varobj * |
2244 | new_variable (void) | |
2245 | { | |
2246 | struct varobj *var; | |
2247 | ||
2248 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
2249 | var->name = NULL; | |
02142340 | 2250 | var->path_expr = NULL; |
8b93c638 JM |
2251 | var->obj_name = NULL; |
2252 | var->index = -1; | |
2253 | var->type = NULL; | |
2254 | var->value = NULL; | |
8b93c638 JM |
2255 | var->num_children = -1; |
2256 | var->parent = NULL; | |
2257 | var->children = NULL; | |
2258 | var->format = 0; | |
2259 | var->root = NULL; | |
fb9b6b35 | 2260 | var->updated = 0; |
85265413 | 2261 | var->print_value = NULL; |
25d5ea92 VP |
2262 | var->frozen = 0; |
2263 | var->not_fetched = 0; | |
b6313243 | 2264 | var->children_requested = 0; |
0cc7d26f TT |
2265 | var->from = -1; |
2266 | var->to = -1; | |
2267 | var->constructor = 0; | |
b6313243 | 2268 | var->pretty_printer = 0; |
0cc7d26f TT |
2269 | var->child_iter = 0; |
2270 | var->saved_item = 0; | |
8b93c638 JM |
2271 | |
2272 | return var; | |
2273 | } | |
2274 | ||
581e13c1 | 2275 | /* Allocate memory and initialize a new root variable. */ |
8b93c638 JM |
2276 | static struct varobj * |
2277 | new_root_variable (void) | |
2278 | { | |
2279 | struct varobj *var = new_variable (); | |
a109c7c1 | 2280 | |
3e43a32a | 2281 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root)); |
8b93c638 JM |
2282 | var->root->lang = NULL; |
2283 | var->root->exp = NULL; | |
2284 | var->root->valid_block = NULL; | |
7a424e99 | 2285 | var->root->frame = null_frame_id; |
a5defcdc | 2286 | var->root->floating = 0; |
8b93c638 | 2287 | var->root->rootvar = NULL; |
8756216b | 2288 | var->root->is_valid = 1; |
8b93c638 JM |
2289 | |
2290 | return var; | |
2291 | } | |
2292 | ||
581e13c1 | 2293 | /* Free any allocated memory associated with VAR. */ |
8b93c638 | 2294 | static void |
fba45db2 | 2295 | free_variable (struct varobj *var) |
8b93c638 | 2296 | { |
d452c4bc UW |
2297 | #if HAVE_PYTHON |
2298 | if (var->pretty_printer) | |
2299 | { | |
2300 | struct cleanup *cleanup = varobj_ensure_python_env (var); | |
0cc7d26f TT |
2301 | Py_XDECREF (var->constructor); |
2302 | Py_XDECREF (var->pretty_printer); | |
2303 | Py_XDECREF (var->child_iter); | |
2304 | Py_XDECREF (var->saved_item); | |
d452c4bc UW |
2305 | do_cleanups (cleanup); |
2306 | } | |
2307 | #endif | |
2308 | ||
36746093 JK |
2309 | value_free (var->value); |
2310 | ||
581e13c1 | 2311 | /* Free the expression if this is a root variable. */ |
b2c2bd75 | 2312 | if (is_root_p (var)) |
8b93c638 | 2313 | { |
3038237c | 2314 | xfree (var->root->exp); |
8038e1e2 | 2315 | xfree (var->root); |
8b93c638 JM |
2316 | } |
2317 | ||
8038e1e2 AC |
2318 | xfree (var->name); |
2319 | xfree (var->obj_name); | |
85265413 | 2320 | xfree (var->print_value); |
02142340 | 2321 | xfree (var->path_expr); |
8038e1e2 | 2322 | xfree (var); |
8b93c638 JM |
2323 | } |
2324 | ||
74b7792f AC |
2325 | static void |
2326 | do_free_variable_cleanup (void *var) | |
2327 | { | |
2328 | free_variable (var); | |
2329 | } | |
2330 | ||
2331 | static struct cleanup * | |
2332 | make_cleanup_free_variable (struct varobj *var) | |
2333 | { | |
2334 | return make_cleanup (do_free_variable_cleanup, var); | |
2335 | } | |
2336 | ||
581e13c1 | 2337 | /* This returns the type of the variable. It also skips past typedefs |
6766a268 | 2338 | to return the real type of the variable. |
94b66fa7 KS |
2339 | |
2340 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
581e13c1 | 2341 | except within get_target_type and get_type. */ |
8b93c638 | 2342 | static struct type * |
fba45db2 | 2343 | get_type (struct varobj *var) |
8b93c638 JM |
2344 | { |
2345 | struct type *type; | |
8b93c638 | 2346 | |
a109c7c1 | 2347 | type = var->type; |
6766a268 DJ |
2348 | if (type != NULL) |
2349 | type = check_typedef (type); | |
8b93c638 JM |
2350 | |
2351 | return type; | |
2352 | } | |
2353 | ||
6e2a9270 VP |
2354 | /* Return the type of the value that's stored in VAR, |
2355 | or that would have being stored there if the | |
581e13c1 | 2356 | value were accessible. |
6e2a9270 VP |
2357 | |
2358 | This differs from VAR->type in that VAR->type is always | |
2359 | the true type of the expession in the source language. | |
2360 | The return value of this function is the type we're | |
2361 | actually storing in varobj, and using for displaying | |
2362 | the values and for comparing previous and new values. | |
2363 | ||
2364 | For example, top-level references are always stripped. */ | |
2365 | static struct type * | |
2366 | get_value_type (struct varobj *var) | |
2367 | { | |
2368 | struct type *type; | |
2369 | ||
2370 | if (var->value) | |
2371 | type = value_type (var->value); | |
2372 | else | |
2373 | type = var->type; | |
2374 | ||
2375 | type = check_typedef (type); | |
2376 | ||
2377 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
2378 | type = get_target_type (type); | |
2379 | ||
2380 | type = check_typedef (type); | |
2381 | ||
2382 | return type; | |
2383 | } | |
2384 | ||
8b93c638 | 2385 | /* This returns the target type (or NULL) of TYPE, also skipping |
94b66fa7 KS |
2386 | past typedefs, just like get_type (). |
2387 | ||
2388 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
581e13c1 | 2389 | except within get_target_type and get_type. */ |
8b93c638 | 2390 | static struct type * |
fba45db2 | 2391 | get_target_type (struct type *type) |
8b93c638 JM |
2392 | { |
2393 | if (type != NULL) | |
2394 | { | |
2395 | type = TYPE_TARGET_TYPE (type); | |
6766a268 DJ |
2396 | if (type != NULL) |
2397 | type = check_typedef (type); | |
8b93c638 JM |
2398 | } |
2399 | ||
2400 | return type; | |
2401 | } | |
2402 | ||
2403 | /* What is the default display for this variable? We assume that | |
581e13c1 | 2404 | everything is "natural". Any exceptions? */ |
8b93c638 | 2405 | static enum varobj_display_formats |
fba45db2 | 2406 | variable_default_display (struct varobj *var) |
8b93c638 JM |
2407 | { |
2408 | return FORMAT_NATURAL; | |
2409 | } | |
2410 | ||
581e13c1 | 2411 | /* FIXME: The following should be generic for any pointer. */ |
8b93c638 | 2412 | static void |
fba45db2 | 2413 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
2414 | { |
2415 | struct cpstack *s; | |
2416 | ||
2417 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
2418 | s->name = name; | |
2419 | s->next = *pstack; | |
2420 | *pstack = s; | |
2421 | } | |
2422 | ||
581e13c1 | 2423 | /* FIXME: The following should be generic for any pointer. */ |
8b93c638 | 2424 | static char * |
fba45db2 | 2425 | cppop (struct cpstack **pstack) |
8b93c638 JM |
2426 | { |
2427 | struct cpstack *s; | |
2428 | char *v; | |
2429 | ||
2430 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
2431 | return NULL; | |
2432 | ||
2433 | s = *pstack; | |
2434 | v = s->name; | |
2435 | *pstack = (*pstack)->next; | |
b8c9b27d | 2436 | xfree (s); |
8b93c638 JM |
2437 | |
2438 | return v; | |
2439 | } | |
2440 | \f | |
2441 | /* | |
2442 | * Language-dependencies | |
2443 | */ | |
2444 | ||
2445 | /* Common entry points */ | |
2446 | ||
581e13c1 | 2447 | /* Get the language of variable VAR. */ |
8b93c638 | 2448 | static enum varobj_languages |
fba45db2 | 2449 | variable_language (struct varobj *var) |
8b93c638 JM |
2450 | { |
2451 | enum varobj_languages lang; | |
2452 | ||
2453 | switch (var->root->exp->language_defn->la_language) | |
2454 | { | |
2455 | default: | |
2456 | case language_c: | |
2457 | lang = vlang_c; | |
2458 | break; | |
2459 | case language_cplus: | |
2460 | lang = vlang_cplus; | |
2461 | break; | |
2462 | case language_java: | |
2463 | lang = vlang_java; | |
2464 | break; | |
40591b7d JCD |
2465 | case language_ada: |
2466 | lang = vlang_ada; | |
2467 | break; | |
8b93c638 JM |
2468 | } |
2469 | ||
2470 | return lang; | |
2471 | } | |
2472 | ||
2473 | /* Return the number of children for a given variable. | |
2474 | The result of this function is defined by the language | |
581e13c1 | 2475 | implementation. The number of children returned by this function |
8b93c638 | 2476 | is the number of children that the user will see in the variable |
581e13c1 | 2477 | display. */ |
8b93c638 | 2478 | static int |
fba45db2 | 2479 | number_of_children (struct varobj *var) |
8b93c638 | 2480 | { |
82ae4854 | 2481 | return (*var->root->lang->number_of_children) (var); |
8b93c638 JM |
2482 | } |
2483 | ||
3e43a32a | 2484 | /* What is the expression for the root varobj VAR? Returns a malloc'd |
581e13c1 | 2485 | string. */ |
8b93c638 | 2486 | static char * |
fba45db2 | 2487 | name_of_variable (struct varobj *var) |
8b93c638 JM |
2488 | { |
2489 | return (*var->root->lang->name_of_variable) (var); | |
2490 | } | |
2491 | ||
3e43a32a | 2492 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd |
581e13c1 | 2493 | string. */ |
8b93c638 | 2494 | static char * |
fba45db2 | 2495 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
2496 | { |
2497 | return (*var->root->lang->name_of_child) (var, index); | |
2498 | } | |
2499 | ||
a5defcdc VP |
2500 | /* What is the ``struct value *'' of the root variable VAR? |
2501 | For floating variable object, evaluation can get us a value | |
2502 | of different type from what is stored in varobj already. In | |
2503 | that case: | |
2504 | - *type_changed will be set to 1 | |
2505 | - old varobj will be freed, and new one will be | |
2506 | created, with the same name. | |
2507 | - *var_handle will be set to the new varobj | |
2508 | Otherwise, *type_changed will be set to 0. */ | |
30b28db1 | 2509 | static struct value * |
fba45db2 | 2510 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 2511 | { |
73a93a32 JI |
2512 | struct varobj *var; |
2513 | ||
2514 | if (var_handle == NULL) | |
2515 | return NULL; | |
2516 | ||
2517 | var = *var_handle; | |
2518 | ||
2519 | /* This should really be an exception, since this should | |
581e13c1 | 2520 | only get called with a root variable. */ |
73a93a32 | 2521 | |
b2c2bd75 | 2522 | if (!is_root_p (var)) |
73a93a32 JI |
2523 | return NULL; |
2524 | ||
a5defcdc | 2525 | if (var->root->floating) |
73a93a32 JI |
2526 | { |
2527 | struct varobj *tmp_var; | |
2528 | char *old_type, *new_type; | |
6225abfa | 2529 | |
73a93a32 JI |
2530 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, |
2531 | USE_SELECTED_FRAME); | |
2532 | if (tmp_var == NULL) | |
2533 | { | |
2534 | return NULL; | |
2535 | } | |
6225abfa | 2536 | old_type = varobj_get_type (var); |
73a93a32 | 2537 | new_type = varobj_get_type (tmp_var); |
72330bd6 | 2538 | if (strcmp (old_type, new_type) == 0) |
73a93a32 | 2539 | { |
fcacd99f VP |
2540 | /* The expression presently stored inside var->root->exp |
2541 | remembers the locations of local variables relatively to | |
2542 | the frame where the expression was created (in DWARF location | |
2543 | button, for example). Naturally, those locations are not | |
2544 | correct in other frames, so update the expression. */ | |
2545 | ||
2546 | struct expression *tmp_exp = var->root->exp; | |
a109c7c1 | 2547 | |
fcacd99f VP |
2548 | var->root->exp = tmp_var->root->exp; |
2549 | tmp_var->root->exp = tmp_exp; | |
2550 | ||
73a93a32 JI |
2551 | varobj_delete (tmp_var, NULL, 0); |
2552 | *type_changed = 0; | |
2553 | } | |
2554 | else | |
2555 | { | |
1b36a34b | 2556 | tmp_var->obj_name = xstrdup (var->obj_name); |
0cc7d26f TT |
2557 | tmp_var->from = var->from; |
2558 | tmp_var->to = var->to; | |
a5defcdc VP |
2559 | varobj_delete (var, NULL, 0); |
2560 | ||
73a93a32 JI |
2561 | install_variable (tmp_var); |
2562 | *var_handle = tmp_var; | |
705da579 | 2563 | var = *var_handle; |
73a93a32 JI |
2564 | *type_changed = 1; |
2565 | } | |
74dddad3 MS |
2566 | xfree (old_type); |
2567 | xfree (new_type); | |
73a93a32 JI |
2568 | } |
2569 | else | |
2570 | { | |
2571 | *type_changed = 0; | |
2572 | } | |
2573 | ||
2574 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
2575 | } |
2576 | ||
581e13c1 | 2577 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
30b28db1 | 2578 | static struct value * |
fba45db2 | 2579 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 2580 | { |
30b28db1 | 2581 | struct value *value; |
8b93c638 JM |
2582 | |
2583 | value = (*parent->root->lang->value_of_child) (parent, index); | |
2584 | ||
8b93c638 JM |
2585 | return value; |
2586 | } | |
2587 | ||
581e13c1 | 2588 | /* GDB already has a command called "value_of_variable". Sigh. */ |
8b93c638 | 2589 | static char * |
de051565 | 2590 | my_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 2591 | { |
8756216b | 2592 | if (var->root->is_valid) |
0cc7d26f TT |
2593 | { |
2594 | if (var->pretty_printer) | |
2595 | return value_get_print_value (var->value, var->format, var); | |
2596 | return (*var->root->lang->value_of_variable) (var, format); | |
2597 | } | |
8756216b DP |
2598 | else |
2599 | return NULL; | |
8b93c638 JM |
2600 | } |
2601 | ||
85265413 | 2602 | static char * |
b6313243 | 2603 | value_get_print_value (struct value *value, enum varobj_display_formats format, |
d452c4bc | 2604 | struct varobj *var) |
85265413 | 2605 | { |
57e66780 | 2606 | struct ui_file *stb; |
621c8364 | 2607 | struct cleanup *old_chain; |
fbb8f299 | 2608 | gdb_byte *thevalue = NULL; |
79a45b7d | 2609 | struct value_print_options opts; |
be759fcf PM |
2610 | struct type *type = NULL; |
2611 | long len = 0; | |
2612 | char *encoding = NULL; | |
2613 | struct gdbarch *gdbarch = NULL; | |
3a182a69 JK |
2614 | /* Initialize it just to avoid a GCC false warning. */ |
2615 | CORE_ADDR str_addr = 0; | |
09ca9e2e | 2616 | int string_print = 0; |
57e66780 DJ |
2617 | |
2618 | if (value == NULL) | |
2619 | return NULL; | |
2620 | ||
621c8364 TT |
2621 | stb = mem_fileopen (); |
2622 | old_chain = make_cleanup_ui_file_delete (stb); | |
2623 | ||
be759fcf | 2624 | gdbarch = get_type_arch (value_type (value)); |
b6313243 TT |
2625 | #if HAVE_PYTHON |
2626 | { | |
d452c4bc UW |
2627 | PyObject *value_formatter = var->pretty_printer; |
2628 | ||
09ca9e2e TT |
2629 | varobj_ensure_python_env (var); |
2630 | ||
0cc7d26f | 2631 | if (value_formatter) |
b6313243 | 2632 | { |
0cc7d26f TT |
2633 | /* First check to see if we have any children at all. If so, |
2634 | we simply return {...}. */ | |
2635 | if (dynamic_varobj_has_child_method (var)) | |
621c8364 TT |
2636 | { |
2637 | do_cleanups (old_chain); | |
2638 | return xstrdup ("{...}"); | |
2639 | } | |
b6313243 | 2640 | |
0cc7d26f | 2641 | if (PyObject_HasAttr (value_formatter, gdbpy_to_string_cst)) |
b6313243 | 2642 | { |
0cc7d26f | 2643 | struct value *replacement; |
0cc7d26f TT |
2644 | PyObject *output = NULL; |
2645 | ||
0cc7d26f | 2646 | output = apply_varobj_pretty_printer (value_formatter, |
621c8364 TT |
2647 | &replacement, |
2648 | stb); | |
00bd41d6 PM |
2649 | |
2650 | /* If we have string like output ... */ | |
0cc7d26f TT |
2651 | if (output) |
2652 | { | |
09ca9e2e TT |
2653 | make_cleanup_py_decref (output); |
2654 | ||
00bd41d6 PM |
2655 | /* If this is a lazy string, extract it. For lazy |
2656 | strings we always print as a string, so set | |
2657 | string_print. */ | |
be759fcf | 2658 | if (gdbpy_is_lazy_string (output)) |
0cc7d26f | 2659 | { |
09ca9e2e TT |
2660 | gdbpy_extract_lazy_string (output, &str_addr, &type, |
2661 | &len, &encoding); | |
2662 | make_cleanup (free_current_contents, &encoding); | |
be759fcf PM |
2663 | string_print = 1; |
2664 | } | |
2665 | else | |
2666 | { | |
00bd41d6 PM |
2667 | /* If it is a regular (non-lazy) string, extract |
2668 | it and copy the contents into THEVALUE. If the | |
2669 | hint says to print it as a string, set | |
2670 | string_print. Otherwise just return the extracted | |
2671 | string as a value. */ | |
2672 | ||
be759fcf PM |
2673 | PyObject *py_str |
2674 | = python_string_to_target_python_string (output); | |
a109c7c1 | 2675 | |
be759fcf PM |
2676 | if (py_str) |
2677 | { | |
2678 | char *s = PyString_AsString (py_str); | |
00bd41d6 PM |
2679 | char *hint; |
2680 | ||
2681 | hint = gdbpy_get_display_hint (value_formatter); | |
2682 | if (hint) | |
2683 | { | |
2684 | if (!strcmp (hint, "string")) | |
2685 | string_print = 1; | |
2686 | xfree (hint); | |
2687 | } | |
a109c7c1 | 2688 | |
be759fcf PM |
2689 | len = PyString_Size (py_str); |
2690 | thevalue = xmemdup (s, len + 1, len + 1); | |
2691 | type = builtin_type (gdbarch)->builtin_char; | |
2692 | Py_DECREF (py_str); | |
09ca9e2e TT |
2693 | |
2694 | if (!string_print) | |
2695 | { | |
2696 | do_cleanups (old_chain); | |
2697 | return thevalue; | |
2698 | } | |
2699 | ||
2700 | make_cleanup (xfree, thevalue); | |
be759fcf | 2701 | } |
8dc78533 JK |
2702 | else |
2703 | gdbpy_print_stack (); | |
0cc7d26f | 2704 | } |
0cc7d26f | 2705 | } |
00bd41d6 PM |
2706 | /* If the printer returned a replacement value, set VALUE |
2707 | to REPLACEMENT. If there is not a replacement value, | |
2708 | just use the value passed to this function. */ | |
0cc7d26f TT |
2709 | if (replacement) |
2710 | value = replacement; | |
b6313243 | 2711 | } |
b6313243 | 2712 | } |
b6313243 TT |
2713 | } |
2714 | #endif | |
2715 | ||
79a45b7d TT |
2716 | get_formatted_print_options (&opts, format_code[(int) format]); |
2717 | opts.deref_ref = 0; | |
b6313243 | 2718 | opts.raw = 1; |
00bd41d6 PM |
2719 | |
2720 | /* If the THEVALUE has contents, it is a regular string. */ | |
b6313243 | 2721 | if (thevalue) |
09ca9e2e TT |
2722 | LA_PRINT_STRING (stb, type, thevalue, len, encoding, 0, &opts); |
2723 | else if (string_print) | |
00bd41d6 PM |
2724 | /* Otherwise, if string_print is set, and it is not a regular |
2725 | string, it is a lazy string. */ | |
09ca9e2e | 2726 | val_print_string (type, encoding, str_addr, len, stb, &opts); |
b6313243 | 2727 | else |
00bd41d6 | 2728 | /* All other cases. */ |
b6313243 | 2729 | common_val_print (value, stb, 0, &opts, current_language); |
00bd41d6 | 2730 | |
759ef836 | 2731 | thevalue = ui_file_xstrdup (stb, NULL); |
57e66780 | 2732 | |
85265413 NR |
2733 | do_cleanups (old_chain); |
2734 | return thevalue; | |
2735 | } | |
2736 | ||
340a7723 NR |
2737 | int |
2738 | varobj_editable_p (struct varobj *var) | |
2739 | { | |
2740 | struct type *type; | |
340a7723 NR |
2741 | |
2742 | if (!(var->root->is_valid && var->value && VALUE_LVAL (var->value))) | |
2743 | return 0; | |
2744 | ||
2745 | type = get_value_type (var); | |
2746 | ||
2747 | switch (TYPE_CODE (type)) | |
2748 | { | |
2749 | case TYPE_CODE_STRUCT: | |
2750 | case TYPE_CODE_UNION: | |
2751 | case TYPE_CODE_ARRAY: | |
2752 | case TYPE_CODE_FUNC: | |
2753 | case TYPE_CODE_METHOD: | |
2754 | return 0; | |
2755 | break; | |
2756 | ||
2757 | default: | |
2758 | return 1; | |
2759 | break; | |
2760 | } | |
2761 | } | |
2762 | ||
acd65feb VP |
2763 | /* Return non-zero if changes in value of VAR |
2764 | must be detected and reported by -var-update. | |
2765 | Return zero is -var-update should never report | |
2766 | changes of such values. This makes sense for structures | |
2767 | (since the changes in children values will be reported separately), | |
2768 | or for artifical objects (like 'public' pseudo-field in C++). | |
2769 | ||
2770 | Return value of 0 means that gdb need not call value_fetch_lazy | |
2771 | for the value of this variable object. */ | |
8b93c638 | 2772 | static int |
b2c2bd75 | 2773 | varobj_value_is_changeable_p (struct varobj *var) |
8b93c638 JM |
2774 | { |
2775 | int r; | |
2776 | struct type *type; | |
2777 | ||
2778 | if (CPLUS_FAKE_CHILD (var)) | |
2779 | return 0; | |
2780 | ||
6e2a9270 | 2781 | type = get_value_type (var); |
8b93c638 JM |
2782 | |
2783 | switch (TYPE_CODE (type)) | |
2784 | { | |
72330bd6 AC |
2785 | case TYPE_CODE_STRUCT: |
2786 | case TYPE_CODE_UNION: | |
2787 | case TYPE_CODE_ARRAY: | |
2788 | r = 0; | |
2789 | break; | |
8b93c638 | 2790 | |
72330bd6 AC |
2791 | default: |
2792 | r = 1; | |
8b93c638 JM |
2793 | } |
2794 | ||
2795 | return r; | |
2796 | } | |
2797 | ||
5a413362 VP |
2798 | /* Return 1 if that varobj is floating, that is is always evaluated in the |
2799 | selected frame, and not bound to thread/frame. Such variable objects | |
2800 | are created using '@' as frame specifier to -var-create. */ | |
2801 | int | |
2802 | varobj_floating_p (struct varobj *var) | |
2803 | { | |
2804 | return var->root->floating; | |
2805 | } | |
2806 | ||
2024f65a VP |
2807 | /* Given the value and the type of a variable object, |
2808 | adjust the value and type to those necessary | |
2809 | for getting children of the variable object. | |
2810 | This includes dereferencing top-level references | |
2811 | to all types and dereferencing pointers to | |
581e13c1 | 2812 | structures. |
2024f65a | 2813 | |
581e13c1 | 2814 | Both TYPE and *TYPE should be non-null. VALUE |
2024f65a VP |
2815 | can be null if we want to only translate type. |
2816 | *VALUE can be null as well -- if the parent | |
581e13c1 | 2817 | value is not known. |
02142340 VP |
2818 | |
2819 | If WAS_PTR is not NULL, set *WAS_PTR to 0 or 1 | |
b6313243 | 2820 | depending on whether pointer was dereferenced |
02142340 | 2821 | in this function. */ |
2024f65a VP |
2822 | static void |
2823 | adjust_value_for_child_access (struct value **value, | |
02142340 VP |
2824 | struct type **type, |
2825 | int *was_ptr) | |
2024f65a VP |
2826 | { |
2827 | gdb_assert (type && *type); | |
2828 | ||
02142340 VP |
2829 | if (was_ptr) |
2830 | *was_ptr = 0; | |
2831 | ||
2024f65a VP |
2832 | *type = check_typedef (*type); |
2833 | ||
2834 | /* The type of value stored in varobj, that is passed | |
2835 | to us, is already supposed to be | |
2836 | reference-stripped. */ | |
2837 | ||
2838 | gdb_assert (TYPE_CODE (*type) != TYPE_CODE_REF); | |
2839 | ||
2840 | /* Pointers to structures are treated just like | |
2841 | structures when accessing children. Don't | |
2842 | dererences pointers to other types. */ | |
2843 | if (TYPE_CODE (*type) == TYPE_CODE_PTR) | |
2844 | { | |
2845 | struct type *target_type = get_target_type (*type); | |
2846 | if (TYPE_CODE (target_type) == TYPE_CODE_STRUCT | |
2847 | || TYPE_CODE (target_type) == TYPE_CODE_UNION) | |
2848 | { | |
2849 | if (value && *value) | |
3f4178d6 | 2850 | { |
8e7b59a5 | 2851 | volatile struct gdb_exception except; |
a109c7c1 | 2852 | |
8e7b59a5 KS |
2853 | TRY_CATCH (except, RETURN_MASK_ERROR) |
2854 | { | |
2855 | *value = value_ind (*value); | |
2856 | } | |
2857 | ||
2858 | if (except.reason < 0) | |
3f4178d6 DJ |
2859 | *value = NULL; |
2860 | } | |
2024f65a | 2861 | *type = target_type; |
02142340 VP |
2862 | if (was_ptr) |
2863 | *was_ptr = 1; | |
2024f65a VP |
2864 | } |
2865 | } | |
2866 | ||
2867 | /* The 'get_target_type' function calls check_typedef on | |
2868 | result, so we can immediately check type code. No | |
2869 | need to call check_typedef here. */ | |
2870 | } | |
2871 | ||
8b93c638 JM |
2872 | /* C */ |
2873 | static int | |
fba45db2 | 2874 | c_number_of_children (struct varobj *var) |
8b93c638 | 2875 | { |
2024f65a VP |
2876 | struct type *type = get_value_type (var); |
2877 | int children = 0; | |
8b93c638 | 2878 | struct type *target; |
8b93c638 | 2879 | |
02142340 | 2880 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 | 2881 | target = get_target_type (type); |
8b93c638 JM |
2882 | |
2883 | switch (TYPE_CODE (type)) | |
2884 | { | |
2885 | case TYPE_CODE_ARRAY: | |
2886 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
d78df370 | 2887 | && !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) |
8b93c638 JM |
2888 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
2889 | else | |
74a44383 DJ |
2890 | /* If we don't know how many elements there are, don't display |
2891 | any. */ | |
2892 | children = 0; | |
8b93c638 JM |
2893 | break; |
2894 | ||
2895 | case TYPE_CODE_STRUCT: | |
2896 | case TYPE_CODE_UNION: | |
2897 | children = TYPE_NFIELDS (type); | |
2898 | break; | |
2899 | ||
2900 | case TYPE_CODE_PTR: | |
581e13c1 | 2901 | /* The type here is a pointer to non-struct. Typically, pointers |
2024f65a VP |
2902 | have one child, except for function ptrs, which have no children, |
2903 | and except for void*, as we don't know what to show. | |
2904 | ||
0755e6c1 FN |
2905 | We can show char* so we allow it to be dereferenced. If you decide |
2906 | to test for it, please mind that a little magic is necessary to | |
2907 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
581e13c1 | 2908 | TYPE_NAME == "char". */ |
2024f65a VP |
2909 | if (TYPE_CODE (target) == TYPE_CODE_FUNC |
2910 | || TYPE_CODE (target) == TYPE_CODE_VOID) | |
2911 | children = 0; | |
2912 | else | |
2913 | children = 1; | |
8b93c638 JM |
2914 | break; |
2915 | ||
2916 | default: | |
581e13c1 | 2917 | /* Other types have no children. */ |
8b93c638 JM |
2918 | break; |
2919 | } | |
2920 | ||
2921 | return children; | |
2922 | } | |
2923 | ||
2924 | static char * | |
fba45db2 | 2925 | c_name_of_variable (struct varobj *parent) |
8b93c638 | 2926 | { |
1b36a34b | 2927 | return xstrdup (parent->name); |
8b93c638 JM |
2928 | } |
2929 | ||
bbec2603 VP |
2930 | /* Return the value of element TYPE_INDEX of a structure |
2931 | value VALUE. VALUE's type should be a structure, | |
581e13c1 | 2932 | or union, or a typedef to struct/union. |
bbec2603 VP |
2933 | |
2934 | Returns NULL if getting the value fails. Never throws. */ | |
2935 | static struct value * | |
2936 | value_struct_element_index (struct value *value, int type_index) | |
8b93c638 | 2937 | { |
bbec2603 VP |
2938 | struct value *result = NULL; |
2939 | volatile struct gdb_exception e; | |
bbec2603 | 2940 | struct type *type = value_type (value); |
a109c7c1 | 2941 | |
bbec2603 VP |
2942 | type = check_typedef (type); |
2943 | ||
2944 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
2945 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
8b93c638 | 2946 | |
bbec2603 VP |
2947 | TRY_CATCH (e, RETURN_MASK_ERROR) |
2948 | { | |
d6a843b5 | 2949 | if (field_is_static (&TYPE_FIELD (type, type_index))) |
bbec2603 VP |
2950 | result = value_static_field (type, type_index); |
2951 | else | |
2952 | result = value_primitive_field (value, 0, type_index, type); | |
2953 | } | |
2954 | if (e.reason < 0) | |
2955 | { | |
2956 | return NULL; | |
2957 | } | |
2958 | else | |
2959 | { | |
2960 | return result; | |
2961 | } | |
2962 | } | |
2963 | ||
2964 | /* Obtain the information about child INDEX of the variable | |
581e13c1 | 2965 | object PARENT. |
bbec2603 VP |
2966 | If CNAME is not null, sets *CNAME to the name of the child relative |
2967 | to the parent. | |
2968 | If CVALUE is not null, sets *CVALUE to the value of the child. | |
2969 | If CTYPE is not null, sets *CTYPE to the type of the child. | |
2970 | ||
2971 | If any of CNAME, CVALUE, or CTYPE is not null, but the corresponding | |
2972 | information cannot be determined, set *CNAME, *CVALUE, or *CTYPE | |
2973 | to NULL. */ | |
2974 | static void | |
2975 | c_describe_child (struct varobj *parent, int index, | |
02142340 VP |
2976 | char **cname, struct value **cvalue, struct type **ctype, |
2977 | char **cfull_expression) | |
bbec2603 VP |
2978 | { |
2979 | struct value *value = parent->value; | |
2024f65a | 2980 | struct type *type = get_value_type (parent); |
02142340 VP |
2981 | char *parent_expression = NULL; |
2982 | int was_ptr; | |
8e7b59a5 | 2983 | volatile struct gdb_exception except; |
bbec2603 VP |
2984 | |
2985 | if (cname) | |
2986 | *cname = NULL; | |
2987 | if (cvalue) | |
2988 | *cvalue = NULL; | |
2989 | if (ctype) | |
2990 | *ctype = NULL; | |
02142340 VP |
2991 | if (cfull_expression) |
2992 | { | |
2993 | *cfull_expression = NULL; | |
2994 | parent_expression = varobj_get_path_expr (parent); | |
2995 | } | |
2996 | adjust_value_for_child_access (&value, &type, &was_ptr); | |
bbec2603 | 2997 | |
8b93c638 JM |
2998 | switch (TYPE_CODE (type)) |
2999 | { | |
3000 | case TYPE_CODE_ARRAY: | |
bbec2603 | 3001 | if (cname) |
3e43a32a MS |
3002 | *cname |
3003 | = xstrdup (int_string (index | |
3004 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), | |
3005 | 10, 1, 0, 0)); | |
bbec2603 VP |
3006 | |
3007 | if (cvalue && value) | |
3008 | { | |
3009 | int real_index = index + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)); | |
a109c7c1 | 3010 | |
8e7b59a5 KS |
3011 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3012 | { | |
3013 | *cvalue = value_subscript (value, real_index); | |
3014 | } | |
bbec2603 VP |
3015 | } |
3016 | ||
3017 | if (ctype) | |
3018 | *ctype = get_target_type (type); | |
3019 | ||
02142340 | 3020 | if (cfull_expression) |
43bbcdc2 PH |
3021 | *cfull_expression = |
3022 | xstrprintf ("(%s)[%s]", parent_expression, | |
3023 | int_string (index | |
3024 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), | |
3025 | 10, 1, 0, 0)); | |
02142340 VP |
3026 | |
3027 | ||
8b93c638 JM |
3028 | break; |
3029 | ||
3030 | case TYPE_CODE_STRUCT: | |
3031 | case TYPE_CODE_UNION: | |
bbec2603 | 3032 | if (cname) |
1b36a34b | 3033 | *cname = xstrdup (TYPE_FIELD_NAME (type, index)); |
bbec2603 VP |
3034 | |
3035 | if (cvalue && value) | |
3036 | { | |
3037 | /* For C, varobj index is the same as type index. */ | |
3038 | *cvalue = value_struct_element_index (value, index); | |
3039 | } | |
3040 | ||
3041 | if (ctype) | |
3042 | *ctype = TYPE_FIELD_TYPE (type, index); | |
3043 | ||
02142340 VP |
3044 | if (cfull_expression) |
3045 | { | |
3046 | char *join = was_ptr ? "->" : "."; | |
a109c7c1 | 3047 | |
02142340 VP |
3048 | *cfull_expression = xstrprintf ("(%s)%s%s", parent_expression, join, |
3049 | TYPE_FIELD_NAME (type, index)); | |
3050 | } | |
3051 | ||
8b93c638 JM |
3052 | break; |
3053 | ||
3054 | case TYPE_CODE_PTR: | |
bbec2603 VP |
3055 | if (cname) |
3056 | *cname = xstrprintf ("*%s", parent->name); | |
8b93c638 | 3057 | |
bbec2603 | 3058 | if (cvalue && value) |
3f4178d6 | 3059 | { |
8e7b59a5 KS |
3060 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3061 | { | |
3062 | *cvalue = value_ind (value); | |
3063 | } | |
a109c7c1 | 3064 | |
8e7b59a5 | 3065 | if (except.reason < 0) |
3f4178d6 DJ |
3066 | *cvalue = NULL; |
3067 | } | |
bbec2603 | 3068 | |
2024f65a VP |
3069 | /* Don't use get_target_type because it calls |
3070 | check_typedef and here, we want to show the true | |
3071 | declared type of the variable. */ | |
bbec2603 | 3072 | if (ctype) |
2024f65a | 3073 | *ctype = TYPE_TARGET_TYPE (type); |
02142340 VP |
3074 | |
3075 | if (cfull_expression) | |
3076 | *cfull_expression = xstrprintf ("*(%s)", parent_expression); | |
bbec2603 | 3077 | |
8b93c638 JM |
3078 | break; |
3079 | ||
3080 | default: | |
581e13c1 | 3081 | /* This should not happen. */ |
bbec2603 VP |
3082 | if (cname) |
3083 | *cname = xstrdup ("???"); | |
02142340 VP |
3084 | if (cfull_expression) |
3085 | *cfull_expression = xstrdup ("???"); | |
581e13c1 | 3086 | /* Don't set value and type, we don't know then. */ |
8b93c638 | 3087 | } |
bbec2603 | 3088 | } |
8b93c638 | 3089 | |
bbec2603 VP |
3090 | static char * |
3091 | c_name_of_child (struct varobj *parent, int index) | |
3092 | { | |
3093 | char *name; | |
a109c7c1 | 3094 | |
02142340 | 3095 | c_describe_child (parent, index, &name, NULL, NULL, NULL); |
8b93c638 JM |
3096 | return name; |
3097 | } | |
3098 | ||
02142340 VP |
3099 | static char * |
3100 | c_path_expr_of_child (struct varobj *child) | |
3101 | { | |
3102 | c_describe_child (child->parent, child->index, NULL, NULL, NULL, | |
3103 | &child->path_expr); | |
3104 | return child->path_expr; | |
3105 | } | |
3106 | ||
c5b48eac VP |
3107 | /* If frame associated with VAR can be found, switch |
3108 | to it and return 1. Otherwise, return 0. */ | |
3109 | static int | |
3110 | check_scope (struct varobj *var) | |
3111 | { | |
3112 | struct frame_info *fi; | |
3113 | int scope; | |
3114 | ||
3115 | fi = frame_find_by_id (var->root->frame); | |
3116 | scope = fi != NULL; | |
3117 | ||
3118 | if (fi) | |
3119 | { | |
3120 | CORE_ADDR pc = get_frame_pc (fi); | |
a109c7c1 | 3121 | |
c5b48eac VP |
3122 | if (pc < BLOCK_START (var->root->valid_block) || |
3123 | pc >= BLOCK_END (var->root->valid_block)) | |
3124 | scope = 0; | |
3125 | else | |
3126 | select_frame (fi); | |
3127 | } | |
3128 | return scope; | |
3129 | } | |
3130 | ||
30b28db1 | 3131 | static struct value * |
fba45db2 | 3132 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 3133 | { |
5e572bb4 | 3134 | struct value *new_val = NULL; |
73a93a32 | 3135 | struct varobj *var = *var_handle; |
c5b48eac | 3136 | int within_scope = 0; |
6208b47d VP |
3137 | struct cleanup *back_to; |
3138 | ||
581e13c1 | 3139 | /* Only root variables can be updated... */ |
b2c2bd75 | 3140 | if (!is_root_p (var)) |
581e13c1 | 3141 | /* Not a root var. */ |
73a93a32 JI |
3142 | return NULL; |
3143 | ||
4f8d22e3 | 3144 | back_to = make_cleanup_restore_current_thread (); |
72330bd6 | 3145 | |
581e13c1 | 3146 | /* Determine whether the variable is still around. */ |
a5defcdc | 3147 | if (var->root->valid_block == NULL || var->root->floating) |
8b93c638 | 3148 | within_scope = 1; |
c5b48eac VP |
3149 | else if (var->root->thread_id == 0) |
3150 | { | |
3151 | /* The program was single-threaded when the variable object was | |
3152 | created. Technically, it's possible that the program became | |
3153 | multi-threaded since then, but we don't support such | |
3154 | scenario yet. */ | |
3155 | within_scope = check_scope (var); | |
3156 | } | |
8b93c638 JM |
3157 | else |
3158 | { | |
c5b48eac VP |
3159 | ptid_t ptid = thread_id_to_pid (var->root->thread_id); |
3160 | if (in_thread_list (ptid)) | |
d2353924 | 3161 | { |
c5b48eac VP |
3162 | switch_to_thread (ptid); |
3163 | within_scope = check_scope (var); | |
3164 | } | |
8b93c638 | 3165 | } |
72330bd6 | 3166 | |
8b93c638 JM |
3167 | if (within_scope) |
3168 | { | |
8e7b59a5 KS |
3169 | volatile struct gdb_exception except; |
3170 | ||
73a93a32 | 3171 | /* We need to catch errors here, because if evaluate |
85d93f1d | 3172 | expression fails we want to just return NULL. */ |
8e7b59a5 KS |
3173 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3174 | { | |
3175 | new_val = evaluate_expression (var->root->exp); | |
3176 | } | |
3177 | ||
8b93c638 JM |
3178 | return new_val; |
3179 | } | |
3180 | ||
6208b47d VP |
3181 | do_cleanups (back_to); |
3182 | ||
8b93c638 JM |
3183 | return NULL; |
3184 | } | |
3185 | ||
30b28db1 | 3186 | static struct value * |
fba45db2 | 3187 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 3188 | { |
bbec2603 | 3189 | struct value *value = NULL; |
8b93c638 | 3190 | |
a109c7c1 | 3191 | c_describe_child (parent, index, NULL, &value, NULL, NULL); |
8b93c638 JM |
3192 | return value; |
3193 | } | |
3194 | ||
3195 | static struct type * | |
fba45db2 | 3196 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 | 3197 | { |
bbec2603 | 3198 | struct type *type = NULL; |
a109c7c1 | 3199 | |
02142340 | 3200 | c_describe_child (parent, index, NULL, NULL, &type, NULL); |
8b93c638 JM |
3201 | return type; |
3202 | } | |
3203 | ||
8b93c638 | 3204 | static char * |
de051565 | 3205 | c_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 3206 | { |
14b3d9c9 JB |
3207 | /* BOGUS: if val_print sees a struct/class, or a reference to one, |
3208 | it will print out its children instead of "{...}". So we need to | |
3209 | catch that case explicitly. */ | |
3210 | struct type *type = get_type (var); | |
e64d9b3d | 3211 | |
b6313243 TT |
3212 | /* If we have a custom formatter, return whatever string it has |
3213 | produced. */ | |
3214 | if (var->pretty_printer && var->print_value) | |
3215 | return xstrdup (var->print_value); | |
3216 | ||
581e13c1 | 3217 | /* Strip top-level references. */ |
14b3d9c9 JB |
3218 | while (TYPE_CODE (type) == TYPE_CODE_REF) |
3219 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
3220 | ||
3221 | switch (TYPE_CODE (type)) | |
8b93c638 JM |
3222 | { |
3223 | case TYPE_CODE_STRUCT: | |
3224 | case TYPE_CODE_UNION: | |
3225 | return xstrdup ("{...}"); | |
3226 | /* break; */ | |
3227 | ||
3228 | case TYPE_CODE_ARRAY: | |
3229 | { | |
e64d9b3d | 3230 | char *number; |
a109c7c1 | 3231 | |
b435e160 | 3232 | number = xstrprintf ("[%d]", var->num_children); |
e64d9b3d | 3233 | return (number); |
8b93c638 JM |
3234 | } |
3235 | /* break; */ | |
3236 | ||
3237 | default: | |
3238 | { | |
575bbeb6 KS |
3239 | if (var->value == NULL) |
3240 | { | |
3241 | /* This can happen if we attempt to get the value of a struct | |
581e13c1 MS |
3242 | member when the parent is an invalid pointer. This is an |
3243 | error condition, so we should tell the caller. */ | |
575bbeb6 KS |
3244 | return NULL; |
3245 | } | |
3246 | else | |
3247 | { | |
25d5ea92 VP |
3248 | if (var->not_fetched && value_lazy (var->value)) |
3249 | /* Frozen variable and no value yet. We don't | |
3250 | implicitly fetch the value. MI response will | |
3251 | use empty string for the value, which is OK. */ | |
3252 | return NULL; | |
3253 | ||
b2c2bd75 | 3254 | gdb_assert (varobj_value_is_changeable_p (var)); |
acd65feb | 3255 | gdb_assert (!value_lazy (var->value)); |
de051565 MK |
3256 | |
3257 | /* If the specified format is the current one, | |
581e13c1 | 3258 | we can reuse print_value. */ |
de051565 MK |
3259 | if (format == var->format) |
3260 | return xstrdup (var->print_value); | |
3261 | else | |
d452c4bc | 3262 | return value_get_print_value (var->value, format, var); |
85265413 | 3263 | } |
e64d9b3d | 3264 | } |
8b93c638 JM |
3265 | } |
3266 | } | |
3267 | \f | |
3268 | ||
3269 | /* C++ */ | |
3270 | ||
3271 | static int | |
fba45db2 | 3272 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
3273 | { |
3274 | struct type *type; | |
3275 | int children, dont_know; | |
3276 | ||
3277 | dont_know = 1; | |
3278 | children = 0; | |
3279 | ||
3280 | if (!CPLUS_FAKE_CHILD (var)) | |
3281 | { | |
2024f65a | 3282 | type = get_value_type (var); |
02142340 | 3283 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 JM |
3284 | |
3285 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 3286 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
3287 | { |
3288 | int kids[3]; | |
3289 | ||
3290 | cplus_class_num_children (type, kids); | |
3291 | if (kids[v_public] != 0) | |
3292 | children++; | |
3293 | if (kids[v_private] != 0) | |
3294 | children++; | |
3295 | if (kids[v_protected] != 0) | |
3296 | children++; | |
3297 | ||
581e13c1 | 3298 | /* Add any baseclasses. */ |
8b93c638 JM |
3299 | children += TYPE_N_BASECLASSES (type); |
3300 | dont_know = 0; | |
3301 | ||
581e13c1 | 3302 | /* FIXME: save children in var. */ |
8b93c638 JM |
3303 | } |
3304 | } | |
3305 | else | |
3306 | { | |
3307 | int kids[3]; | |
3308 | ||
2024f65a | 3309 | type = get_value_type (var->parent); |
02142340 | 3310 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 JM |
3311 | |
3312 | cplus_class_num_children (type, kids); | |
6e382aa3 | 3313 | if (strcmp (var->name, "public") == 0) |
8b93c638 | 3314 | children = kids[v_public]; |
6e382aa3 | 3315 | else if (strcmp (var->name, "private") == 0) |
8b93c638 JM |
3316 | children = kids[v_private]; |
3317 | else | |
3318 | children = kids[v_protected]; | |
3319 | dont_know = 0; | |
3320 | } | |
3321 | ||
3322 | if (dont_know) | |
3323 | children = c_number_of_children (var); | |
3324 | ||
3325 | return children; | |
3326 | } | |
3327 | ||
3328 | /* Compute # of public, private, and protected variables in this class. | |
3329 | That means we need to descend into all baseclasses and find out | |
581e13c1 | 3330 | how many are there, too. */ |
8b93c638 | 3331 | static void |
1669605f | 3332 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 | 3333 | { |
d48cc9dd DJ |
3334 | int i, vptr_fieldno; |
3335 | struct type *basetype = NULL; | |
8b93c638 JM |
3336 | |
3337 | children[v_public] = 0; | |
3338 | children[v_private] = 0; | |
3339 | children[v_protected] = 0; | |
3340 | ||
d48cc9dd | 3341 | vptr_fieldno = get_vptr_fieldno (type, &basetype); |
8b93c638 JM |
3342 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) |
3343 | { | |
d48cc9dd DJ |
3344 | /* If we have a virtual table pointer, omit it. Even if virtual |
3345 | table pointers are not specifically marked in the debug info, | |
3346 | they should be artificial. */ | |
3347 | if ((type == basetype && i == vptr_fieldno) | |
3348 | || TYPE_FIELD_ARTIFICIAL (type, i)) | |
8b93c638 JM |
3349 | continue; |
3350 | ||
3351 | if (TYPE_FIELD_PROTECTED (type, i)) | |
3352 | children[v_protected]++; | |
3353 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
3354 | children[v_private]++; | |
3355 | else | |
3356 | children[v_public]++; | |
3357 | } | |
3358 | } | |
3359 | ||
3360 | static char * | |
fba45db2 | 3361 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
3362 | { |
3363 | return c_name_of_variable (parent); | |
3364 | } | |
3365 | ||
2024f65a VP |
3366 | enum accessibility { private_field, protected_field, public_field }; |
3367 | ||
3368 | /* Check if field INDEX of TYPE has the specified accessibility. | |
3369 | Return 0 if so and 1 otherwise. */ | |
3370 | static int | |
3371 | match_accessibility (struct type *type, int index, enum accessibility acc) | |
8b93c638 | 3372 | { |
2024f65a VP |
3373 | if (acc == private_field && TYPE_FIELD_PRIVATE (type, index)) |
3374 | return 1; | |
3375 | else if (acc == protected_field && TYPE_FIELD_PROTECTED (type, index)) | |
3376 | return 1; | |
3377 | else if (acc == public_field && !TYPE_FIELD_PRIVATE (type, index) | |
3378 | && !TYPE_FIELD_PROTECTED (type, index)) | |
3379 | return 1; | |
3380 | else | |
3381 | return 0; | |
3382 | } | |
3383 | ||
3384 | static void | |
3385 | cplus_describe_child (struct varobj *parent, int index, | |
02142340 VP |
3386 | char **cname, struct value **cvalue, struct type **ctype, |
3387 | char **cfull_expression) | |
2024f65a | 3388 | { |
2024f65a | 3389 | struct value *value; |
8b93c638 | 3390 | struct type *type; |
02142340 VP |
3391 | int was_ptr; |
3392 | char *parent_expression = NULL; | |
8b93c638 | 3393 | |
2024f65a VP |
3394 | if (cname) |
3395 | *cname = NULL; | |
3396 | if (cvalue) | |
3397 | *cvalue = NULL; | |
3398 | if (ctype) | |
3399 | *ctype = NULL; | |
02142340 VP |
3400 | if (cfull_expression) |
3401 | *cfull_expression = NULL; | |
2024f65a | 3402 | |
8b93c638 JM |
3403 | if (CPLUS_FAKE_CHILD (parent)) |
3404 | { | |
2024f65a VP |
3405 | value = parent->parent->value; |
3406 | type = get_value_type (parent->parent); | |
02142340 VP |
3407 | if (cfull_expression) |
3408 | parent_expression = varobj_get_path_expr (parent->parent); | |
8b93c638 JM |
3409 | } |
3410 | else | |
2024f65a VP |
3411 | { |
3412 | value = parent->value; | |
3413 | type = get_value_type (parent); | |
02142340 VP |
3414 | if (cfull_expression) |
3415 | parent_expression = varobj_get_path_expr (parent); | |
2024f65a | 3416 | } |
8b93c638 | 3417 | |
02142340 | 3418 | adjust_value_for_child_access (&value, &type, &was_ptr); |
2024f65a VP |
3419 | |
3420 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3f4178d6 | 3421 | || TYPE_CODE (type) == TYPE_CODE_UNION) |
8b93c638 | 3422 | { |
02142340 | 3423 | char *join = was_ptr ? "->" : "."; |
a109c7c1 | 3424 | |
8b93c638 JM |
3425 | if (CPLUS_FAKE_CHILD (parent)) |
3426 | { | |
6e382aa3 JJ |
3427 | /* The fields of the class type are ordered as they |
3428 | appear in the class. We are given an index for a | |
3429 | particular access control type ("public","protected", | |
3430 | or "private"). We must skip over fields that don't | |
3431 | have the access control we are looking for to properly | |
581e13c1 | 3432 | find the indexed field. */ |
6e382aa3 | 3433 | int type_index = TYPE_N_BASECLASSES (type); |
2024f65a | 3434 | enum accessibility acc = public_field; |
d48cc9dd DJ |
3435 | int vptr_fieldno; |
3436 | struct type *basetype = NULL; | |
3437 | ||
3438 | vptr_fieldno = get_vptr_fieldno (type, &basetype); | |
6e382aa3 | 3439 | if (strcmp (parent->name, "private") == 0) |
2024f65a | 3440 | acc = private_field; |
6e382aa3 | 3441 | else if (strcmp (parent->name, "protected") == 0) |
2024f65a VP |
3442 | acc = protected_field; |
3443 | ||
3444 | while (index >= 0) | |
6e382aa3 | 3445 | { |
d48cc9dd DJ |
3446 | if ((type == basetype && type_index == vptr_fieldno) |
3447 | || TYPE_FIELD_ARTIFICIAL (type, type_index)) | |
2024f65a VP |
3448 | ; /* ignore vptr */ |
3449 | else if (match_accessibility (type, type_index, acc)) | |
6e382aa3 JJ |
3450 | --index; |
3451 | ++type_index; | |
6e382aa3 | 3452 | } |
2024f65a VP |
3453 | --type_index; |
3454 | ||
3455 | if (cname) | |
3456 | *cname = xstrdup (TYPE_FIELD_NAME (type, type_index)); | |
3457 | ||
3458 | if (cvalue && value) | |
3459 | *cvalue = value_struct_element_index (value, type_index); | |
3460 | ||
3461 | if (ctype) | |
3462 | *ctype = TYPE_FIELD_TYPE (type, type_index); | |
02142340 VP |
3463 | |
3464 | if (cfull_expression) | |
3e43a32a MS |
3465 | *cfull_expression |
3466 | = xstrprintf ("((%s)%s%s)", parent_expression, | |
3467 | join, | |
3468 | TYPE_FIELD_NAME (type, type_index)); | |
2024f65a VP |
3469 | } |
3470 | else if (index < TYPE_N_BASECLASSES (type)) | |
3471 | { | |
3472 | /* This is a baseclass. */ | |
3473 | if (cname) | |
3474 | *cname = xstrdup (TYPE_FIELD_NAME (type, index)); | |
3475 | ||
3476 | if (cvalue && value) | |
0cc7d26f | 3477 | *cvalue = value_cast (TYPE_FIELD_TYPE (type, index), value); |
6e382aa3 | 3478 | |
2024f65a VP |
3479 | if (ctype) |
3480 | { | |
3481 | *ctype = TYPE_FIELD_TYPE (type, index); | |
3482 | } | |
02142340 VP |
3483 | |
3484 | if (cfull_expression) | |
3485 | { | |
3486 | char *ptr = was_ptr ? "*" : ""; | |
a109c7c1 | 3487 | |
581e13c1 | 3488 | /* Cast the parent to the base' type. Note that in gdb, |
02142340 VP |
3489 | expression like |
3490 | (Base1)d | |
3491 | will create an lvalue, for all appearences, so we don't | |
3492 | need to use more fancy: | |
3493 | *(Base1*)(&d) | |
0d932b2f MK |
3494 | construct. |
3495 | ||
3496 | When we are in the scope of the base class or of one | |
3497 | of its children, the type field name will be interpreted | |
3498 | as a constructor, if it exists. Therefore, we must | |
3499 | indicate that the name is a class name by using the | |
3500 | 'class' keyword. See PR mi/11912 */ | |
3501 | *cfull_expression = xstrprintf ("(%s(class %s%s) %s)", | |
02142340 VP |
3502 | ptr, |
3503 | TYPE_FIELD_NAME (type, index), | |
3504 | ptr, | |
3505 | parent_expression); | |
3506 | } | |
8b93c638 | 3507 | } |
8b93c638 JM |
3508 | else |
3509 | { | |
348144ba | 3510 | char *access = NULL; |
6e382aa3 | 3511 | int children[3]; |
a109c7c1 | 3512 | |
2024f65a | 3513 | cplus_class_num_children (type, children); |
6e382aa3 | 3514 | |
8b93c638 | 3515 | /* Everything beyond the baseclasses can |
6e382aa3 JJ |
3516 | only be "public", "private", or "protected" |
3517 | ||
3518 | The special "fake" children are always output by varobj in | |
581e13c1 | 3519 | this order. So if INDEX == 2, it MUST be "protected". */ |
8b93c638 JM |
3520 | index -= TYPE_N_BASECLASSES (type); |
3521 | switch (index) | |
3522 | { | |
3523 | case 0: | |
6e382aa3 | 3524 | if (children[v_public] > 0) |
2024f65a | 3525 | access = "public"; |
6e382aa3 | 3526 | else if (children[v_private] > 0) |
2024f65a | 3527 | access = "private"; |
6e382aa3 | 3528 | else |
2024f65a | 3529 | access = "protected"; |
6e382aa3 | 3530 | break; |
8b93c638 | 3531 | case 1: |
6e382aa3 | 3532 | if (children[v_public] > 0) |
8b93c638 | 3533 | { |
6e382aa3 | 3534 | if (children[v_private] > 0) |
2024f65a | 3535 | access = "private"; |
6e382aa3 | 3536 | else |
2024f65a | 3537 | access = "protected"; |
8b93c638 | 3538 | } |
6e382aa3 | 3539 | else if (children[v_private] > 0) |
2024f65a | 3540 | access = "protected"; |
6e382aa3 | 3541 | break; |
8b93c638 | 3542 | case 2: |
581e13c1 | 3543 | /* Must be protected. */ |
2024f65a | 3544 | access = "protected"; |
6e382aa3 | 3545 | break; |
8b93c638 | 3546 | default: |
581e13c1 | 3547 | /* error! */ |
8b93c638 JM |
3548 | break; |
3549 | } | |
348144ba MS |
3550 | |
3551 | gdb_assert (access); | |
2024f65a VP |
3552 | if (cname) |
3553 | *cname = xstrdup (access); | |
8b93c638 | 3554 | |
02142340 | 3555 | /* Value and type and full expression are null here. */ |
2024f65a | 3556 | } |
8b93c638 | 3557 | } |
8b93c638 JM |
3558 | else |
3559 | { | |
02142340 | 3560 | c_describe_child (parent, index, cname, cvalue, ctype, cfull_expression); |
2024f65a VP |
3561 | } |
3562 | } | |
8b93c638 | 3563 | |
2024f65a VP |
3564 | static char * |
3565 | cplus_name_of_child (struct varobj *parent, int index) | |
3566 | { | |
3567 | char *name = NULL; | |
a109c7c1 | 3568 | |
02142340 | 3569 | cplus_describe_child (parent, index, &name, NULL, NULL, NULL); |
8b93c638 JM |
3570 | return name; |
3571 | } | |
3572 | ||
02142340 VP |
3573 | static char * |
3574 | cplus_path_expr_of_child (struct varobj *child) | |
3575 | { | |
3576 | cplus_describe_child (child->parent, child->index, NULL, NULL, NULL, | |
3577 | &child->path_expr); | |
3578 | return child->path_expr; | |
3579 | } | |
3580 | ||
30b28db1 | 3581 | static struct value * |
fba45db2 | 3582 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 3583 | { |
73a93a32 | 3584 | return c_value_of_root (var_handle); |
8b93c638 JM |
3585 | } |
3586 | ||
30b28db1 | 3587 | static struct value * |
fba45db2 | 3588 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 | 3589 | { |
2024f65a | 3590 | struct value *value = NULL; |
a109c7c1 | 3591 | |
02142340 | 3592 | cplus_describe_child (parent, index, NULL, &value, NULL, NULL); |
8b93c638 JM |
3593 | return value; |
3594 | } | |
3595 | ||
3596 | static struct type * | |
fba45db2 | 3597 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 | 3598 | { |
2024f65a | 3599 | struct type *type = NULL; |
a109c7c1 | 3600 | |
02142340 | 3601 | cplus_describe_child (parent, index, NULL, NULL, &type, NULL); |
8b93c638 JM |
3602 | return type; |
3603 | } | |
3604 | ||
8b93c638 | 3605 | static char * |
a109c7c1 MS |
3606 | cplus_value_of_variable (struct varobj *var, |
3607 | enum varobj_display_formats format) | |
8b93c638 JM |
3608 | { |
3609 | ||
3610 | /* If we have one of our special types, don't print out | |
581e13c1 | 3611 | any value. */ |
8b93c638 JM |
3612 | if (CPLUS_FAKE_CHILD (var)) |
3613 | return xstrdup (""); | |
3614 | ||
de051565 | 3615 | return c_value_of_variable (var, format); |
8b93c638 JM |
3616 | } |
3617 | \f | |
3618 | /* Java */ | |
3619 | ||
3620 | static int | |
fba45db2 | 3621 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
3622 | { |
3623 | return cplus_number_of_children (var); | |
3624 | } | |
3625 | ||
3626 | static char * | |
fba45db2 | 3627 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
3628 | { |
3629 | char *p, *name; | |
3630 | ||
3631 | name = cplus_name_of_variable (parent); | |
3632 | /* If the name has "-" in it, it is because we | |
581e13c1 | 3633 | needed to escape periods in the name... */ |
8b93c638 JM |
3634 | p = name; |
3635 | ||
3636 | while (*p != '\000') | |
3637 | { | |
3638 | if (*p == '-') | |
3639 | *p = '.'; | |
3640 | p++; | |
3641 | } | |
3642 | ||
3643 | return name; | |
3644 | } | |
3645 | ||
3646 | static char * | |
fba45db2 | 3647 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3648 | { |
3649 | char *name, *p; | |
3650 | ||
3651 | name = cplus_name_of_child (parent, index); | |
581e13c1 | 3652 | /* Escape any periods in the name... */ |
8b93c638 JM |
3653 | p = name; |
3654 | ||
3655 | while (*p != '\000') | |
3656 | { | |
3657 | if (*p == '.') | |
3658 | *p = '-'; | |
3659 | p++; | |
3660 | } | |
3661 | ||
3662 | return name; | |
3663 | } | |
3664 | ||
02142340 VP |
3665 | static char * |
3666 | java_path_expr_of_child (struct varobj *child) | |
3667 | { | |
3668 | return NULL; | |
3669 | } | |
3670 | ||
30b28db1 | 3671 | static struct value * |
fba45db2 | 3672 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 3673 | { |
73a93a32 | 3674 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
3675 | } |
3676 | ||
30b28db1 | 3677 | static struct value * |
fba45db2 | 3678 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3679 | { |
3680 | return cplus_value_of_child (parent, index); | |
3681 | } | |
3682 | ||
3683 | static struct type * | |
fba45db2 | 3684 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3685 | { |
3686 | return cplus_type_of_child (parent, index); | |
3687 | } | |
3688 | ||
8b93c638 | 3689 | static char * |
de051565 | 3690 | java_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 3691 | { |
de051565 | 3692 | return cplus_value_of_variable (var, format); |
8b93c638 | 3693 | } |
54333c3b | 3694 | |
40591b7d JCD |
3695 | /* Ada specific callbacks for VAROBJs. */ |
3696 | ||
3697 | static int | |
3698 | ada_number_of_children (struct varobj *var) | |
3699 | { | |
3700 | return c_number_of_children (var); | |
3701 | } | |
3702 | ||
3703 | static char * | |
3704 | ada_name_of_variable (struct varobj *parent) | |
3705 | { | |
3706 | return c_name_of_variable (parent); | |
3707 | } | |
3708 | ||
3709 | static char * | |
3710 | ada_name_of_child (struct varobj *parent, int index) | |
3711 | { | |
3712 | return c_name_of_child (parent, index); | |
3713 | } | |
3714 | ||
3715 | static char* | |
3716 | ada_path_expr_of_child (struct varobj *child) | |
3717 | { | |
3718 | return c_path_expr_of_child (child); | |
3719 | } | |
3720 | ||
3721 | static struct value * | |
3722 | ada_value_of_root (struct varobj **var_handle) | |
3723 | { | |
3724 | return c_value_of_root (var_handle); | |
3725 | } | |
3726 | ||
3727 | static struct value * | |
3728 | ada_value_of_child (struct varobj *parent, int index) | |
3729 | { | |
3730 | return c_value_of_child (parent, index); | |
3731 | } | |
3732 | ||
3733 | static struct type * | |
3734 | ada_type_of_child (struct varobj *parent, int index) | |
3735 | { | |
3736 | return c_type_of_child (parent, index); | |
3737 | } | |
3738 | ||
3739 | static char * | |
3740 | ada_value_of_variable (struct varobj *var, enum varobj_display_formats format) | |
3741 | { | |
3742 | return c_value_of_variable (var, format); | |
3743 | } | |
3744 | ||
54333c3b JK |
3745 | /* Iterate all the existing _root_ VAROBJs and call the FUNC callback for them |
3746 | with an arbitrary caller supplied DATA pointer. */ | |
3747 | ||
3748 | void | |
3749 | all_root_varobjs (void (*func) (struct varobj *var, void *data), void *data) | |
3750 | { | |
3751 | struct varobj_root *var_root, *var_root_next; | |
3752 | ||
3753 | /* Iterate "safely" - handle if the callee deletes its passed VAROBJ. */ | |
3754 | ||
3755 | for (var_root = rootlist; var_root != NULL; var_root = var_root_next) | |
3756 | { | |
3757 | var_root_next = var_root->next; | |
3758 | ||
3759 | (*func) (var_root->rootvar, data); | |
3760 | } | |
3761 | } | |
8b93c638 JM |
3762 | \f |
3763 | extern void _initialize_varobj (void); | |
3764 | void | |
3765 | _initialize_varobj (void) | |
3766 | { | |
3767 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
3768 | ||
3769 | varobj_table = xmalloc (sizeof_table); | |
3770 | memset (varobj_table, 0, sizeof_table); | |
3771 | ||
85c07804 | 3772 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
3e43a32a MS |
3773 | &varobjdebug, |
3774 | _("Set varobj debugging."), | |
3775 | _("Show varobj debugging."), | |
3776 | _("When non-zero, varobj debugging is enabled."), | |
3777 | NULL, show_varobjdebug, | |
85c07804 | 3778 | &setlist, &showlist); |
8b93c638 | 3779 | } |
8756216b | 3780 | |
54333c3b JK |
3781 | /* Invalidate varobj VAR if it is tied to locals and re-create it if it is |
3782 | defined on globals. It is a helper for varobj_invalidate. */ | |
2dbd25e5 | 3783 | |
54333c3b JK |
3784 | static void |
3785 | varobj_invalidate_iter (struct varobj *var, void *unused) | |
8756216b | 3786 | { |
54333c3b JK |
3787 | /* Floating varobjs are reparsed on each stop, so we don't care if the |
3788 | presently parsed expression refers to something that's gone. */ | |
3789 | if (var->root->floating) | |
3790 | return; | |
8756216b | 3791 | |
54333c3b JK |
3792 | /* global var must be re-evaluated. */ |
3793 | if (var->root->valid_block == NULL) | |
2dbd25e5 | 3794 | { |
54333c3b | 3795 | struct varobj *tmp_var; |
2dbd25e5 | 3796 | |
54333c3b JK |
3797 | /* Try to create a varobj with same expression. If we succeed |
3798 | replace the old varobj, otherwise invalidate it. */ | |
3799 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
3800 | USE_CURRENT_FRAME); | |
3801 | if (tmp_var != NULL) | |
3802 | { | |
3803 | tmp_var->obj_name = xstrdup (var->obj_name); | |
3804 | varobj_delete (var, NULL, 0); | |
3805 | install_variable (tmp_var); | |
2dbd25e5 | 3806 | } |
54333c3b JK |
3807 | else |
3808 | var->root->is_valid = 0; | |
2dbd25e5 | 3809 | } |
54333c3b JK |
3810 | else /* locals must be invalidated. */ |
3811 | var->root->is_valid = 0; | |
3812 | } | |
3813 | ||
3814 | /* Invalidate the varobjs that are tied to locals and re-create the ones that | |
3815 | are defined on globals. | |
3816 | Invalidated varobjs will be always printed in_scope="invalid". */ | |
3817 | ||
3818 | void | |
3819 | varobj_invalidate (void) | |
3820 | { | |
3821 | all_root_varobjs (varobj_invalidate_iter, NULL); | |
8756216b | 3822 | } |