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 | ||
85254831 KS |
44 | /* The names of varobjs representing anonymous structs or unions. */ |
45 | #define ANONYMOUS_STRUCT_NAME _("<anonymous struct>") | |
46 | #define ANONYMOUS_UNION_NAME _("<anonymous union>") | |
47 | ||
8b93c638 JM |
48 | /* Non-zero if we want to see trace of varobj level stuff. */ |
49 | ||
50 | int varobjdebug = 0; | |
920d2a44 AC |
51 | static void |
52 | show_varobjdebug (struct ui_file *file, int from_tty, | |
53 | struct cmd_list_element *c, const char *value) | |
54 | { | |
55 | fprintf_filtered (file, _("Varobj debugging is %s.\n"), value); | |
56 | } | |
8b93c638 | 57 | |
581e13c1 | 58 | /* String representations of gdb's format codes. */ |
8b93c638 | 59 | char *varobj_format_string[] = |
72330bd6 | 60 | { "natural", "binary", "decimal", "hexadecimal", "octal" }; |
8b93c638 | 61 | |
581e13c1 | 62 | /* String representations of gdb's known languages. */ |
72330bd6 | 63 | char *varobj_language_string[] = { "unknown", "C", "C++", "Java" }; |
8b93c638 | 64 | |
0cc7d26f TT |
65 | /* True if we want to allow Python-based pretty-printing. */ |
66 | static int pretty_printing = 0; | |
67 | ||
68 | void | |
69 | varobj_enable_pretty_printing (void) | |
70 | { | |
71 | pretty_printing = 1; | |
72 | } | |
73 | ||
8b93c638 JM |
74 | /* Data structures */ |
75 | ||
76 | /* Every root variable has one of these structures saved in its | |
581e13c1 | 77 | varobj. Members which must be free'd are noted. */ |
8b93c638 | 78 | struct varobj_root |
72330bd6 | 79 | { |
8b93c638 | 80 | |
581e13c1 | 81 | /* Alloc'd expression for this parent. */ |
72330bd6 | 82 | struct expression *exp; |
8b93c638 | 83 | |
581e13c1 | 84 | /* Block for which this expression is valid. */ |
72330bd6 | 85 | struct block *valid_block; |
8b93c638 | 86 | |
44a67aa7 VP |
87 | /* The frame for this expression. This field is set iff valid_block is |
88 | not NULL. */ | |
e64d9b3d | 89 | struct frame_id frame; |
8b93c638 | 90 | |
c5b48eac | 91 | /* The thread ID that this varobj_root belong to. This field |
581e13c1 | 92 | is only valid if valid_block is not NULL. |
c5b48eac VP |
93 | When not 0, indicates which thread 'frame' belongs to. |
94 | When 0, indicates that the thread list was empty when the varobj_root | |
95 | was created. */ | |
96 | int thread_id; | |
97 | ||
a5defcdc VP |
98 | /* If 1, the -var-update always recomputes the value in the |
99 | current thread and frame. Otherwise, variable object is | |
581e13c1 | 100 | always updated in the specific scope/thread/frame. */ |
a5defcdc | 101 | int floating; |
73a93a32 | 102 | |
8756216b DP |
103 | /* Flag that indicates validity: set to 0 when this varobj_root refers |
104 | to symbols that do not exist anymore. */ | |
105 | int is_valid; | |
106 | ||
581e13c1 | 107 | /* Language info for this variable and its children. */ |
72330bd6 | 108 | struct language_specific *lang; |
8b93c638 | 109 | |
581e13c1 | 110 | /* The varobj for this root node. */ |
72330bd6 | 111 | struct varobj *rootvar; |
8b93c638 | 112 | |
72330bd6 AC |
113 | /* Next root variable */ |
114 | struct varobj_root *next; | |
115 | }; | |
8b93c638 JM |
116 | |
117 | /* Every variable in the system has a structure of this type defined | |
581e13c1 MS |
118 | for it. This structure holds all information necessary to manipulate |
119 | a particular object variable. Members which must be freed are noted. */ | |
8b93c638 | 120 | struct varobj |
72330bd6 | 121 | { |
8b93c638 | 122 | |
581e13c1 | 123 | /* Alloc'd name of the variable for this object. If this variable is a |
72330bd6 | 124 | child, then this name will be the child's source name. |
581e13c1 MS |
125 | (bar, not foo.bar). */ |
126 | /* NOTE: This is the "expression". */ | |
72330bd6 | 127 | char *name; |
8b93c638 | 128 | |
02142340 VP |
129 | /* Alloc'd expression for this child. Can be used to create a |
130 | root variable corresponding to this child. */ | |
131 | char *path_expr; | |
132 | ||
581e13c1 MS |
133 | /* The alloc'd name for this variable's object. This is here for |
134 | convenience when constructing this object's children. */ | |
72330bd6 | 135 | char *obj_name; |
8b93c638 | 136 | |
581e13c1 | 137 | /* Index of this variable in its parent or -1. */ |
72330bd6 | 138 | int index; |
8b93c638 | 139 | |
202ddcaa VP |
140 | /* The type of this variable. This can be NULL |
141 | for artifial variable objects -- currently, the "accessibility" | |
142 | variable objects in C++. */ | |
72330bd6 | 143 | struct type *type; |
8b93c638 | 144 | |
b20d8971 VP |
145 | /* The value of this expression or subexpression. A NULL value |
146 | indicates there was an error getting this value. | |
b2c2bd75 VP |
147 | Invariant: if varobj_value_is_changeable_p (this) is non-zero, |
148 | the value is either NULL, or not lazy. */ | |
30b28db1 | 149 | struct value *value; |
8b93c638 | 150 | |
581e13c1 | 151 | /* The number of (immediate) children this variable has. */ |
72330bd6 | 152 | int num_children; |
8b93c638 | 153 | |
581e13c1 | 154 | /* If this object is a child, this points to its immediate parent. */ |
72330bd6 | 155 | struct varobj *parent; |
8b93c638 | 156 | |
28335dcc VP |
157 | /* Children of this object. */ |
158 | VEC (varobj_p) *children; | |
8b93c638 | 159 | |
b6313243 TT |
160 | /* Whether the children of this varobj were requested. This field is |
161 | used to decide if dynamic varobj should recompute their children. | |
162 | In the event that the frontend never asked for the children, we | |
163 | can avoid that. */ | |
164 | int children_requested; | |
165 | ||
581e13c1 MS |
166 | /* Description of the root variable. Points to root variable for |
167 | children. */ | |
72330bd6 | 168 | struct varobj_root *root; |
8b93c638 | 169 | |
581e13c1 | 170 | /* The format of the output for this object. */ |
72330bd6 | 171 | enum varobj_display_formats format; |
fb9b6b35 | 172 | |
581e13c1 | 173 | /* Was this variable updated via a varobj_set_value operation. */ |
fb9b6b35 | 174 | int updated; |
85265413 NR |
175 | |
176 | /* Last print value. */ | |
177 | char *print_value; | |
25d5ea92 VP |
178 | |
179 | /* Is this variable frozen. Frozen variables are never implicitly | |
180 | updated by -var-update * | |
181 | or -var-update <direct-or-indirect-parent>. */ | |
182 | int frozen; | |
183 | ||
184 | /* Is the value of this variable intentionally not fetched? It is | |
185 | not fetched if either the variable is frozen, or any parents is | |
186 | frozen. */ | |
187 | int not_fetched; | |
b6313243 | 188 | |
0cc7d26f TT |
189 | /* Sub-range of children which the MI consumer has requested. If |
190 | FROM < 0 or TO < 0, means that all children have been | |
191 | requested. */ | |
192 | int from; | |
193 | int to; | |
194 | ||
195 | /* The pretty-printer constructor. If NULL, then the default | |
196 | pretty-printer will be looked up. If None, then no | |
197 | pretty-printer will be installed. */ | |
198 | PyObject *constructor; | |
199 | ||
b6313243 TT |
200 | /* The pretty-printer that has been constructed. If NULL, then a |
201 | new printer object is needed, and one will be constructed. */ | |
202 | PyObject *pretty_printer; | |
0cc7d26f TT |
203 | |
204 | /* The iterator returned by the printer's 'children' method, or NULL | |
205 | if not available. */ | |
206 | PyObject *child_iter; | |
207 | ||
208 | /* We request one extra item from the iterator, so that we can | |
209 | report to the caller whether there are more items than we have | |
210 | already reported. However, we don't want to install this value | |
211 | when we read it, because that will mess up future updates. So, | |
212 | we stash it here instead. */ | |
213 | PyObject *saved_item; | |
72330bd6 | 214 | }; |
8b93c638 | 215 | |
8b93c638 | 216 | struct cpstack |
72330bd6 AC |
217 | { |
218 | char *name; | |
219 | struct cpstack *next; | |
220 | }; | |
8b93c638 JM |
221 | |
222 | /* A list of varobjs */ | |
223 | ||
224 | struct vlist | |
72330bd6 AC |
225 | { |
226 | struct varobj *var; | |
227 | struct vlist *next; | |
228 | }; | |
8b93c638 JM |
229 | |
230 | /* Private function prototypes */ | |
231 | ||
581e13c1 | 232 | /* Helper functions for the above subcommands. */ |
8b93c638 | 233 | |
a14ed312 | 234 | static int delete_variable (struct cpstack **, struct varobj *, int); |
8b93c638 | 235 | |
a14ed312 KB |
236 | static void delete_variable_1 (struct cpstack **, int *, |
237 | struct varobj *, int, int); | |
8b93c638 | 238 | |
a14ed312 | 239 | static int install_variable (struct varobj *); |
8b93c638 | 240 | |
a14ed312 | 241 | static void uninstall_variable (struct varobj *); |
8b93c638 | 242 | |
a14ed312 | 243 | static struct varobj *create_child (struct varobj *, int, char *); |
8b93c638 | 244 | |
b6313243 TT |
245 | static struct varobj * |
246 | create_child_with_value (struct varobj *parent, int index, const char *name, | |
247 | struct value *value); | |
248 | ||
8b93c638 JM |
249 | /* Utility routines */ |
250 | ||
a14ed312 | 251 | static struct varobj *new_variable (void); |
8b93c638 | 252 | |
a14ed312 | 253 | static struct varobj *new_root_variable (void); |
8b93c638 | 254 | |
a14ed312 | 255 | static void free_variable (struct varobj *var); |
8b93c638 | 256 | |
74b7792f AC |
257 | static struct cleanup *make_cleanup_free_variable (struct varobj *var); |
258 | ||
a14ed312 | 259 | static struct type *get_type (struct varobj *var); |
8b93c638 | 260 | |
6e2a9270 VP |
261 | static struct type *get_value_type (struct varobj *var); |
262 | ||
a14ed312 | 263 | static struct type *get_target_type (struct type *); |
8b93c638 | 264 | |
a14ed312 | 265 | static enum varobj_display_formats variable_default_display (struct varobj *); |
8b93c638 | 266 | |
a14ed312 | 267 | static void cppush (struct cpstack **pstack, char *name); |
8b93c638 | 268 | |
a14ed312 | 269 | static char *cppop (struct cpstack **pstack); |
8b93c638 | 270 | |
acd65feb VP |
271 | static int install_new_value (struct varobj *var, struct value *value, |
272 | int initial); | |
273 | ||
581e13c1 | 274 | /* Language-specific routines. */ |
8b93c638 | 275 | |
a14ed312 | 276 | static enum varobj_languages variable_language (struct varobj *var); |
8b93c638 | 277 | |
a14ed312 | 278 | static int number_of_children (struct varobj *); |
8b93c638 | 279 | |
a14ed312 | 280 | static char *name_of_variable (struct varobj *); |
8b93c638 | 281 | |
a14ed312 | 282 | static char *name_of_child (struct varobj *, int); |
8b93c638 | 283 | |
30b28db1 | 284 | static struct value *value_of_root (struct varobj **var_handle, int *); |
8b93c638 | 285 | |
30b28db1 | 286 | static struct value *value_of_child (struct varobj *parent, int index); |
8b93c638 | 287 | |
de051565 MK |
288 | static char *my_value_of_variable (struct varobj *var, |
289 | enum varobj_display_formats format); | |
8b93c638 | 290 | |
85265413 | 291 | static char *value_get_print_value (struct value *value, |
b6313243 | 292 | enum varobj_display_formats format, |
d452c4bc | 293 | struct varobj *var); |
85265413 | 294 | |
b2c2bd75 VP |
295 | static int varobj_value_is_changeable_p (struct varobj *var); |
296 | ||
297 | static int is_root_p (struct varobj *var); | |
8b93c638 | 298 | |
d8b65138 JK |
299 | #if HAVE_PYTHON |
300 | ||
9a1edae6 PM |
301 | static struct varobj *varobj_add_child (struct varobj *var, |
302 | const char *name, | |
303 | struct value *value); | |
b6313243 | 304 | |
d8b65138 JK |
305 | #endif /* HAVE_PYTHON */ |
306 | ||
8b93c638 JM |
307 | /* C implementation */ |
308 | ||
a14ed312 | 309 | static int c_number_of_children (struct varobj *var); |
8b93c638 | 310 | |
a14ed312 | 311 | static char *c_name_of_variable (struct varobj *parent); |
8b93c638 | 312 | |
a14ed312 | 313 | static char *c_name_of_child (struct varobj *parent, int index); |
8b93c638 | 314 | |
02142340 VP |
315 | static char *c_path_expr_of_child (struct varobj *child); |
316 | ||
30b28db1 | 317 | static struct value *c_value_of_root (struct varobj **var_handle); |
8b93c638 | 318 | |
30b28db1 | 319 | static struct value *c_value_of_child (struct varobj *parent, int index); |
8b93c638 | 320 | |
a14ed312 | 321 | static struct type *c_type_of_child (struct varobj *parent, int index); |
8b93c638 | 322 | |
de051565 MK |
323 | static char *c_value_of_variable (struct varobj *var, |
324 | enum varobj_display_formats format); | |
8b93c638 JM |
325 | |
326 | /* C++ implementation */ | |
327 | ||
a14ed312 | 328 | static int cplus_number_of_children (struct varobj *var); |
8b93c638 | 329 | |
a14ed312 | 330 | static void cplus_class_num_children (struct type *type, int children[3]); |
8b93c638 | 331 | |
a14ed312 | 332 | static char *cplus_name_of_variable (struct varobj *parent); |
8b93c638 | 333 | |
a14ed312 | 334 | static char *cplus_name_of_child (struct varobj *parent, int index); |
8b93c638 | 335 | |
02142340 VP |
336 | static char *cplus_path_expr_of_child (struct varobj *child); |
337 | ||
30b28db1 | 338 | static struct value *cplus_value_of_root (struct varobj **var_handle); |
8b93c638 | 339 | |
30b28db1 | 340 | static struct value *cplus_value_of_child (struct varobj *parent, int index); |
8b93c638 | 341 | |
a14ed312 | 342 | static struct type *cplus_type_of_child (struct varobj *parent, int index); |
8b93c638 | 343 | |
de051565 MK |
344 | static char *cplus_value_of_variable (struct varobj *var, |
345 | enum varobj_display_formats format); | |
8b93c638 JM |
346 | |
347 | /* Java implementation */ | |
348 | ||
a14ed312 | 349 | static int java_number_of_children (struct varobj *var); |
8b93c638 | 350 | |
a14ed312 | 351 | static char *java_name_of_variable (struct varobj *parent); |
8b93c638 | 352 | |
a14ed312 | 353 | static char *java_name_of_child (struct varobj *parent, int index); |
8b93c638 | 354 | |
02142340 VP |
355 | static char *java_path_expr_of_child (struct varobj *child); |
356 | ||
30b28db1 | 357 | static struct value *java_value_of_root (struct varobj **var_handle); |
8b93c638 | 358 | |
30b28db1 | 359 | static struct value *java_value_of_child (struct varobj *parent, int index); |
8b93c638 | 360 | |
a14ed312 | 361 | static struct type *java_type_of_child (struct varobj *parent, int index); |
8b93c638 | 362 | |
de051565 MK |
363 | static char *java_value_of_variable (struct varobj *var, |
364 | enum varobj_display_formats format); | |
8b93c638 | 365 | |
40591b7d JCD |
366 | /* Ada implementation */ |
367 | ||
368 | static int ada_number_of_children (struct varobj *var); | |
369 | ||
370 | static char *ada_name_of_variable (struct varobj *parent); | |
371 | ||
372 | static char *ada_name_of_child (struct varobj *parent, int index); | |
373 | ||
374 | static char *ada_path_expr_of_child (struct varobj *child); | |
375 | ||
376 | static struct value *ada_value_of_root (struct varobj **var_handle); | |
377 | ||
378 | static struct value *ada_value_of_child (struct varobj *parent, int index); | |
379 | ||
380 | static struct type *ada_type_of_child (struct varobj *parent, int index); | |
381 | ||
382 | static char *ada_value_of_variable (struct varobj *var, | |
383 | enum varobj_display_formats format); | |
384 | ||
8b93c638 JM |
385 | /* The language specific vector */ |
386 | ||
387 | struct language_specific | |
72330bd6 | 388 | { |
8b93c638 | 389 | |
581e13c1 | 390 | /* The language of this variable. */ |
72330bd6 | 391 | enum varobj_languages language; |
8b93c638 | 392 | |
581e13c1 | 393 | /* The number of children of PARENT. */ |
72330bd6 | 394 | int (*number_of_children) (struct varobj * parent); |
8b93c638 | 395 | |
581e13c1 | 396 | /* The name (expression) of a root varobj. */ |
72330bd6 | 397 | char *(*name_of_variable) (struct varobj * parent); |
8b93c638 | 398 | |
581e13c1 | 399 | /* The name of the INDEX'th child of PARENT. */ |
72330bd6 | 400 | char *(*name_of_child) (struct varobj * parent, int index); |
8b93c638 | 401 | |
02142340 VP |
402 | /* Returns the rooted expression of CHILD, which is a variable |
403 | obtain that has some parent. */ | |
404 | char *(*path_expr_of_child) (struct varobj * child); | |
405 | ||
581e13c1 | 406 | /* The ``struct value *'' of the root variable ROOT. */ |
30b28db1 | 407 | struct value *(*value_of_root) (struct varobj ** root_handle); |
8b93c638 | 408 | |
581e13c1 | 409 | /* The ``struct value *'' of the INDEX'th child of PARENT. */ |
30b28db1 | 410 | struct value *(*value_of_child) (struct varobj * parent, int index); |
8b93c638 | 411 | |
581e13c1 | 412 | /* The type of the INDEX'th child of PARENT. */ |
72330bd6 | 413 | struct type *(*type_of_child) (struct varobj * parent, int index); |
8b93c638 | 414 | |
581e13c1 | 415 | /* The current value of VAR. */ |
de051565 MK |
416 | char *(*value_of_variable) (struct varobj * var, |
417 | enum varobj_display_formats format); | |
72330bd6 | 418 | }; |
8b93c638 | 419 | |
581e13c1 | 420 | /* Array of known source language routines. */ |
d5d6fca5 | 421 | static struct language_specific languages[vlang_end] = { |
581e13c1 | 422 | /* Unknown (try treating as C). */ |
8b93c638 | 423 | { |
72330bd6 AC |
424 | vlang_unknown, |
425 | c_number_of_children, | |
426 | c_name_of_variable, | |
427 | c_name_of_child, | |
02142340 | 428 | c_path_expr_of_child, |
72330bd6 AC |
429 | c_value_of_root, |
430 | c_value_of_child, | |
431 | c_type_of_child, | |
72330bd6 | 432 | c_value_of_variable} |
8b93c638 JM |
433 | , |
434 | /* C */ | |
435 | { | |
72330bd6 AC |
436 | vlang_c, |
437 | c_number_of_children, | |
438 | c_name_of_variable, | |
439 | c_name_of_child, | |
02142340 | 440 | c_path_expr_of_child, |
72330bd6 AC |
441 | c_value_of_root, |
442 | c_value_of_child, | |
443 | c_type_of_child, | |
72330bd6 | 444 | c_value_of_variable} |
8b93c638 JM |
445 | , |
446 | /* C++ */ | |
447 | { | |
72330bd6 AC |
448 | vlang_cplus, |
449 | cplus_number_of_children, | |
450 | cplus_name_of_variable, | |
451 | cplus_name_of_child, | |
02142340 | 452 | cplus_path_expr_of_child, |
72330bd6 AC |
453 | cplus_value_of_root, |
454 | cplus_value_of_child, | |
455 | cplus_type_of_child, | |
72330bd6 | 456 | cplus_value_of_variable} |
8b93c638 JM |
457 | , |
458 | /* Java */ | |
459 | { | |
72330bd6 AC |
460 | vlang_java, |
461 | java_number_of_children, | |
462 | java_name_of_variable, | |
463 | java_name_of_child, | |
02142340 | 464 | java_path_expr_of_child, |
72330bd6 AC |
465 | java_value_of_root, |
466 | java_value_of_child, | |
467 | java_type_of_child, | |
40591b7d JCD |
468 | java_value_of_variable}, |
469 | /* Ada */ | |
470 | { | |
471 | vlang_ada, | |
472 | ada_number_of_children, | |
473 | ada_name_of_variable, | |
474 | ada_name_of_child, | |
475 | ada_path_expr_of_child, | |
476 | ada_value_of_root, | |
477 | ada_value_of_child, | |
478 | ada_type_of_child, | |
479 | ada_value_of_variable} | |
8b93c638 JM |
480 | }; |
481 | ||
581e13c1 | 482 | /* A little convenience enum for dealing with C++/Java. */ |
8b93c638 | 483 | enum vsections |
72330bd6 AC |
484 | { |
485 | v_public = 0, v_private, v_protected | |
486 | }; | |
8b93c638 JM |
487 | |
488 | /* Private data */ | |
489 | ||
581e13c1 | 490 | /* Mappings of varobj_display_formats enums to gdb's format codes. */ |
72330bd6 | 491 | static int format_code[] = { 0, 't', 'd', 'x', 'o' }; |
8b93c638 | 492 | |
581e13c1 | 493 | /* Header of the list of root variable objects. */ |
8b93c638 | 494 | static struct varobj_root *rootlist; |
8b93c638 | 495 | |
581e13c1 MS |
496 | /* Prime number indicating the number of buckets in the hash table. */ |
497 | /* A prime large enough to avoid too many colisions. */ | |
8b93c638 JM |
498 | #define VAROBJ_TABLE_SIZE 227 |
499 | ||
581e13c1 | 500 | /* Pointer to the varobj hash table (built at run time). */ |
8b93c638 JM |
501 | static struct vlist **varobj_table; |
502 | ||
581e13c1 | 503 | /* Is the variable X one of our "fake" children? */ |
8b93c638 JM |
504 | #define CPLUS_FAKE_CHILD(x) \ |
505 | ((x) != NULL && (x)->type == NULL && (x)->value == NULL) | |
506 | \f | |
507 | ||
508 | /* API Implementation */ | |
b2c2bd75 VP |
509 | static int |
510 | is_root_p (struct varobj *var) | |
511 | { | |
512 | return (var->root->rootvar == var); | |
513 | } | |
8b93c638 | 514 | |
d452c4bc UW |
515 | #ifdef HAVE_PYTHON |
516 | /* Helper function to install a Python environment suitable for | |
517 | use during operations on VAR. */ | |
70221824 | 518 | static struct cleanup * |
d452c4bc UW |
519 | varobj_ensure_python_env (struct varobj *var) |
520 | { | |
521 | return ensure_python_env (var->root->exp->gdbarch, | |
522 | var->root->exp->language_defn); | |
523 | } | |
524 | #endif | |
525 | ||
581e13c1 | 526 | /* Creates a varobj (not its children). */ |
8b93c638 | 527 | |
7d8547c9 AC |
528 | /* Return the full FRAME which corresponds to the given CORE_ADDR |
529 | or NULL if no FRAME on the chain corresponds to CORE_ADDR. */ | |
530 | ||
531 | static struct frame_info * | |
532 | find_frame_addr_in_frame_chain (CORE_ADDR frame_addr) | |
533 | { | |
534 | struct frame_info *frame = NULL; | |
535 | ||
536 | if (frame_addr == (CORE_ADDR) 0) | |
537 | return NULL; | |
538 | ||
9d49bdc2 PA |
539 | for (frame = get_current_frame (); |
540 | frame != NULL; | |
541 | frame = get_prev_frame (frame)) | |
7d8547c9 | 542 | { |
1fac167a UW |
543 | /* The CORE_ADDR we get as argument was parsed from a string GDB |
544 | output as $fp. This output got truncated to gdbarch_addr_bit. | |
545 | Truncate the frame base address in the same manner before | |
546 | comparing it against our argument. */ | |
547 | CORE_ADDR frame_base = get_frame_base_address (frame); | |
548 | int addr_bit = gdbarch_addr_bit (get_frame_arch (frame)); | |
a109c7c1 | 549 | |
1fac167a UW |
550 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) |
551 | frame_base &= ((CORE_ADDR) 1 << addr_bit) - 1; | |
552 | ||
553 | if (frame_base == frame_addr) | |
7d8547c9 AC |
554 | return frame; |
555 | } | |
9d49bdc2 PA |
556 | |
557 | return NULL; | |
7d8547c9 AC |
558 | } |
559 | ||
8b93c638 JM |
560 | struct varobj * |
561 | varobj_create (char *objname, | |
72330bd6 | 562 | char *expression, CORE_ADDR frame, enum varobj_type type) |
8b93c638 JM |
563 | { |
564 | struct varobj *var; | |
8b93c638 JM |
565 | struct cleanup *old_chain; |
566 | ||
581e13c1 | 567 | /* Fill out a varobj structure for the (root) variable being constructed. */ |
8b93c638 | 568 | var = new_root_variable (); |
74b7792f | 569 | old_chain = make_cleanup_free_variable (var); |
8b93c638 JM |
570 | |
571 | if (expression != NULL) | |
572 | { | |
e4195b40 | 573 | struct frame_info *fi; |
35633fef | 574 | struct frame_id old_id = null_frame_id; |
e4195b40 | 575 | struct block *block; |
8b93c638 JM |
576 | char *p; |
577 | enum varobj_languages lang; | |
e55dccf0 | 578 | struct value *value = NULL; |
8e7b59a5 | 579 | volatile struct gdb_exception except; |
8b93c638 | 580 | |
9d49bdc2 PA |
581 | /* Parse and evaluate the expression, filling in as much of the |
582 | variable's data as possible. */ | |
583 | ||
584 | if (has_stack_frames ()) | |
585 | { | |
581e13c1 | 586 | /* Allow creator to specify context of variable. */ |
9d49bdc2 PA |
587 | if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME)) |
588 | fi = get_selected_frame (NULL); | |
589 | else | |
590 | /* FIXME: cagney/2002-11-23: This code should be doing a | |
591 | lookup using the frame ID and not just the frame's | |
592 | ``address''. This, of course, means an interface | |
593 | change. However, with out that interface change ISAs, | |
594 | such as the ia64 with its two stacks, won't work. | |
595 | Similar goes for the case where there is a frameless | |
596 | function. */ | |
597 | fi = find_frame_addr_in_frame_chain (frame); | |
598 | } | |
8b93c638 | 599 | else |
9d49bdc2 | 600 | fi = NULL; |
8b93c638 | 601 | |
581e13c1 | 602 | /* frame = -2 means always use selected frame. */ |
73a93a32 | 603 | if (type == USE_SELECTED_FRAME) |
a5defcdc | 604 | var->root->floating = 1; |
73a93a32 | 605 | |
8b93c638 JM |
606 | block = NULL; |
607 | if (fi != NULL) | |
ae767bfb | 608 | block = get_frame_block (fi, 0); |
8b93c638 JM |
609 | |
610 | p = expression; | |
611 | innermost_block = NULL; | |
73a93a32 | 612 | /* Wrap the call to parse expression, so we can |
581e13c1 | 613 | return a sensible error. */ |
8e7b59a5 KS |
614 | TRY_CATCH (except, RETURN_MASK_ERROR) |
615 | { | |
616 | var->root->exp = parse_exp_1 (&p, block, 0); | |
617 | } | |
618 | ||
619 | if (except.reason < 0) | |
73a93a32 | 620 | { |
f748fb40 | 621 | do_cleanups (old_chain); |
73a93a32 JI |
622 | return NULL; |
623 | } | |
8b93c638 | 624 | |
581e13c1 | 625 | /* Don't allow variables to be created for types. */ |
8b93c638 JM |
626 | if (var->root->exp->elts[0].opcode == OP_TYPE) |
627 | { | |
628 | do_cleanups (old_chain); | |
bc8332bb AC |
629 | fprintf_unfiltered (gdb_stderr, "Attempt to use a type name" |
630 | " as an expression.\n"); | |
8b93c638 JM |
631 | return NULL; |
632 | } | |
633 | ||
634 | var->format = variable_default_display (var); | |
635 | var->root->valid_block = innermost_block; | |
1b36a34b | 636 | var->name = xstrdup (expression); |
02142340 | 637 | /* For a root var, the name and the expr are the same. */ |
1b36a34b | 638 | var->path_expr = xstrdup (expression); |
8b93c638 JM |
639 | |
640 | /* When the frame is different from the current frame, | |
641 | we must select the appropriate frame before parsing | |
642 | the expression, otherwise the value will not be current. | |
581e13c1 | 643 | Since select_frame is so benign, just call it for all cases. */ |
4e22772d | 644 | if (innermost_block) |
8b93c638 | 645 | { |
4e22772d JK |
646 | /* User could specify explicit FRAME-ADDR which was not found but |
647 | EXPRESSION is frame specific and we would not be able to evaluate | |
648 | it correctly next time. With VALID_BLOCK set we must also set | |
649 | FRAME and THREAD_ID. */ | |
650 | if (fi == NULL) | |
651 | error (_("Failed to find the specified frame")); | |
652 | ||
7a424e99 | 653 | var->root->frame = get_frame_id (fi); |
c5b48eac | 654 | var->root->thread_id = pid_to_thread_id (inferior_ptid); |
35633fef | 655 | old_id = get_frame_id (get_selected_frame (NULL)); |
c5b48eac | 656 | select_frame (fi); |
8b93c638 JM |
657 | } |
658 | ||
340a7723 | 659 | /* We definitely need to catch errors here. |
8b93c638 | 660 | If evaluate_expression succeeds we got the value we wanted. |
581e13c1 | 661 | But if it fails, we still go on with a call to evaluate_type(). */ |
8e7b59a5 KS |
662 | TRY_CATCH (except, RETURN_MASK_ERROR) |
663 | { | |
664 | value = evaluate_expression (var->root->exp); | |
665 | } | |
666 | ||
667 | if (except.reason < 0) | |
e55dccf0 VP |
668 | { |
669 | /* Error getting the value. Try to at least get the | |
670 | right type. */ | |
671 | struct value *type_only_value = evaluate_type (var->root->exp); | |
a109c7c1 | 672 | |
e55dccf0 VP |
673 | var->type = value_type (type_only_value); |
674 | } | |
675 | else | |
676 | var->type = value_type (value); | |
acd65feb | 677 | |
acd65feb | 678 | install_new_value (var, value, 1 /* Initial assignment */); |
8b93c638 JM |
679 | |
680 | /* Set language info */ | |
681 | lang = variable_language (var); | |
d5d6fca5 | 682 | var->root->lang = &languages[lang]; |
8b93c638 | 683 | |
581e13c1 | 684 | /* Set ourselves as our root. */ |
8b93c638 JM |
685 | var->root->rootvar = var; |
686 | ||
581e13c1 | 687 | /* Reset the selected frame. */ |
35633fef JK |
688 | if (frame_id_p (old_id)) |
689 | select_frame (frame_find_by_id (old_id)); | |
8b93c638 JM |
690 | } |
691 | ||
73a93a32 | 692 | /* If the variable object name is null, that means this |
581e13c1 | 693 | is a temporary variable, so don't install it. */ |
73a93a32 JI |
694 | |
695 | if ((var != NULL) && (objname != NULL)) | |
8b93c638 | 696 | { |
1b36a34b | 697 | var->obj_name = xstrdup (objname); |
8b93c638 JM |
698 | |
699 | /* If a varobj name is duplicated, the install will fail so | |
581e13c1 | 700 | we must cleanup. */ |
8b93c638 JM |
701 | if (!install_variable (var)) |
702 | { | |
703 | do_cleanups (old_chain); | |
704 | return NULL; | |
705 | } | |
706 | } | |
707 | ||
708 | discard_cleanups (old_chain); | |
709 | return var; | |
710 | } | |
711 | ||
581e13c1 | 712 | /* Generates an unique name that can be used for a varobj. */ |
8b93c638 JM |
713 | |
714 | char * | |
715 | varobj_gen_name (void) | |
716 | { | |
717 | static int id = 0; | |
e64d9b3d | 718 | char *obj_name; |
8b93c638 | 719 | |
581e13c1 | 720 | /* Generate a name for this object. */ |
8b93c638 | 721 | id++; |
b435e160 | 722 | obj_name = xstrprintf ("var%d", id); |
8b93c638 | 723 | |
e64d9b3d | 724 | return obj_name; |
8b93c638 JM |
725 | } |
726 | ||
61d8f275 JK |
727 | /* Given an OBJNAME, returns the pointer to the corresponding varobj. Call |
728 | error if OBJNAME cannot be found. */ | |
8b93c638 JM |
729 | |
730 | struct varobj * | |
731 | varobj_get_handle (char *objname) | |
732 | { | |
733 | struct vlist *cv; | |
734 | const char *chp; | |
735 | unsigned int index = 0; | |
736 | unsigned int i = 1; | |
737 | ||
738 | for (chp = objname; *chp; chp++) | |
739 | { | |
740 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
741 | } | |
742 | ||
743 | cv = *(varobj_table + index); | |
744 | while ((cv != NULL) && (strcmp (cv->var->obj_name, objname) != 0)) | |
745 | cv = cv->next; | |
746 | ||
747 | if (cv == NULL) | |
8a3fe4f8 | 748 | error (_("Variable object not found")); |
8b93c638 JM |
749 | |
750 | return cv->var; | |
751 | } | |
752 | ||
581e13c1 | 753 | /* Given the handle, return the name of the object. */ |
8b93c638 JM |
754 | |
755 | char * | |
756 | varobj_get_objname (struct varobj *var) | |
757 | { | |
758 | return var->obj_name; | |
759 | } | |
760 | ||
581e13c1 | 761 | /* Given the handle, return the expression represented by the object. */ |
8b93c638 JM |
762 | |
763 | char * | |
764 | varobj_get_expression (struct varobj *var) | |
765 | { | |
766 | return name_of_variable (var); | |
767 | } | |
768 | ||
769 | /* Deletes a varobj and all its children if only_children == 0, | |
3e43a32a MS |
770 | otherwise deletes only the children; returns a malloc'ed list of |
771 | all the (malloc'ed) names of the variables that have been deleted | |
581e13c1 | 772 | (NULL terminated). */ |
8b93c638 JM |
773 | |
774 | int | |
775 | varobj_delete (struct varobj *var, char ***dellist, int only_children) | |
776 | { | |
777 | int delcount; | |
778 | int mycount; | |
779 | struct cpstack *result = NULL; | |
780 | char **cp; | |
781 | ||
581e13c1 | 782 | /* Initialize a stack for temporary results. */ |
8b93c638 JM |
783 | cppush (&result, NULL); |
784 | ||
785 | if (only_children) | |
581e13c1 | 786 | /* Delete only the variable children. */ |
8b93c638 JM |
787 | delcount = delete_variable (&result, var, 1 /* only the children */ ); |
788 | else | |
581e13c1 | 789 | /* Delete the variable and all its children. */ |
8b93c638 JM |
790 | delcount = delete_variable (&result, var, 0 /* parent+children */ ); |
791 | ||
581e13c1 | 792 | /* We may have been asked to return a list of what has been deleted. */ |
8b93c638 JM |
793 | if (dellist != NULL) |
794 | { | |
795 | *dellist = xmalloc ((delcount + 1) * sizeof (char *)); | |
796 | ||
797 | cp = *dellist; | |
798 | mycount = delcount; | |
799 | *cp = cppop (&result); | |
800 | while ((*cp != NULL) && (mycount > 0)) | |
801 | { | |
802 | mycount--; | |
803 | cp++; | |
804 | *cp = cppop (&result); | |
805 | } | |
806 | ||
807 | if (mycount || (*cp != NULL)) | |
8a3fe4f8 | 808 | warning (_("varobj_delete: assertion failed - mycount(=%d) <> 0"), |
72330bd6 | 809 | mycount); |
8b93c638 JM |
810 | } |
811 | ||
812 | return delcount; | |
813 | } | |
814 | ||
d8b65138 JK |
815 | #if HAVE_PYTHON |
816 | ||
b6313243 TT |
817 | /* Convenience function for varobj_set_visualizer. Instantiate a |
818 | pretty-printer for a given value. */ | |
819 | static PyObject * | |
820 | instantiate_pretty_printer (PyObject *constructor, struct value *value) | |
821 | { | |
b6313243 TT |
822 | PyObject *val_obj = NULL; |
823 | PyObject *printer; | |
b6313243 | 824 | |
b6313243 | 825 | val_obj = value_to_value_object (value); |
b6313243 TT |
826 | if (! val_obj) |
827 | return NULL; | |
828 | ||
829 | printer = PyObject_CallFunctionObjArgs (constructor, val_obj, NULL); | |
830 | Py_DECREF (val_obj); | |
831 | return printer; | |
b6313243 TT |
832 | } |
833 | ||
d8b65138 JK |
834 | #endif |
835 | ||
581e13c1 | 836 | /* Set/Get variable object display format. */ |
8b93c638 JM |
837 | |
838 | enum varobj_display_formats | |
839 | varobj_set_display_format (struct varobj *var, | |
840 | enum varobj_display_formats format) | |
841 | { | |
842 | switch (format) | |
843 | { | |
844 | case FORMAT_NATURAL: | |
845 | case FORMAT_BINARY: | |
846 | case FORMAT_DECIMAL: | |
847 | case FORMAT_HEXADECIMAL: | |
848 | case FORMAT_OCTAL: | |
849 | var->format = format; | |
850 | break; | |
851 | ||
852 | default: | |
853 | var->format = variable_default_display (var); | |
854 | } | |
855 | ||
ae7d22a6 VP |
856 | if (varobj_value_is_changeable_p (var) |
857 | && var->value && !value_lazy (var->value)) | |
858 | { | |
6c761d9c | 859 | xfree (var->print_value); |
d452c4bc | 860 | var->print_value = value_get_print_value (var->value, var->format, var); |
ae7d22a6 VP |
861 | } |
862 | ||
8b93c638 JM |
863 | return var->format; |
864 | } | |
865 | ||
866 | enum varobj_display_formats | |
867 | varobj_get_display_format (struct varobj *var) | |
868 | { | |
869 | return var->format; | |
870 | } | |
871 | ||
b6313243 TT |
872 | char * |
873 | varobj_get_display_hint (struct varobj *var) | |
874 | { | |
875 | char *result = NULL; | |
876 | ||
877 | #if HAVE_PYTHON | |
d452c4bc UW |
878 | struct cleanup *back_to = varobj_ensure_python_env (var); |
879 | ||
b6313243 TT |
880 | if (var->pretty_printer) |
881 | result = gdbpy_get_display_hint (var->pretty_printer); | |
d452c4bc UW |
882 | |
883 | do_cleanups (back_to); | |
b6313243 TT |
884 | #endif |
885 | ||
886 | return result; | |
887 | } | |
888 | ||
0cc7d26f TT |
889 | /* Return true if the varobj has items after TO, false otherwise. */ |
890 | ||
891 | int | |
892 | varobj_has_more (struct varobj *var, int to) | |
893 | { | |
894 | if (VEC_length (varobj_p, var->children) > to) | |
895 | return 1; | |
896 | return ((to == -1 || VEC_length (varobj_p, var->children) == to) | |
897 | && var->saved_item != NULL); | |
898 | } | |
899 | ||
c5b48eac VP |
900 | /* If the variable object is bound to a specific thread, that |
901 | is its evaluation can always be done in context of a frame | |
902 | inside that thread, returns GDB id of the thread -- which | |
581e13c1 | 903 | is always positive. Otherwise, returns -1. */ |
c5b48eac VP |
904 | int |
905 | varobj_get_thread_id (struct varobj *var) | |
906 | { | |
907 | if (var->root->valid_block && var->root->thread_id > 0) | |
908 | return var->root->thread_id; | |
909 | else | |
910 | return -1; | |
911 | } | |
912 | ||
25d5ea92 VP |
913 | void |
914 | varobj_set_frozen (struct varobj *var, int frozen) | |
915 | { | |
916 | /* When a variable is unfrozen, we don't fetch its value. | |
917 | The 'not_fetched' flag remains set, so next -var-update | |
918 | won't complain. | |
919 | ||
920 | We don't fetch the value, because for structures the client | |
921 | should do -var-update anyway. It would be bad to have different | |
922 | client-size logic for structure and other types. */ | |
923 | var->frozen = frozen; | |
924 | } | |
925 | ||
926 | int | |
927 | varobj_get_frozen (struct varobj *var) | |
928 | { | |
929 | return var->frozen; | |
930 | } | |
931 | ||
0cc7d26f TT |
932 | /* A helper function that restricts a range to what is actually |
933 | available in a VEC. This follows the usual rules for the meaning | |
934 | of FROM and TO -- if either is negative, the entire range is | |
935 | used. */ | |
936 | ||
937 | static void | |
938 | restrict_range (VEC (varobj_p) *children, int *from, int *to) | |
939 | { | |
940 | if (*from < 0 || *to < 0) | |
941 | { | |
942 | *from = 0; | |
943 | *to = VEC_length (varobj_p, children); | |
944 | } | |
945 | else | |
946 | { | |
947 | if (*from > VEC_length (varobj_p, children)) | |
948 | *from = VEC_length (varobj_p, children); | |
949 | if (*to > VEC_length (varobj_p, children)) | |
950 | *to = VEC_length (varobj_p, children); | |
951 | if (*from > *to) | |
952 | *from = *to; | |
953 | } | |
954 | } | |
955 | ||
d8b65138 JK |
956 | #if HAVE_PYTHON |
957 | ||
0cc7d26f TT |
958 | /* A helper for update_dynamic_varobj_children that installs a new |
959 | child when needed. */ | |
960 | ||
961 | static void | |
962 | install_dynamic_child (struct varobj *var, | |
963 | VEC (varobj_p) **changed, | |
964 | VEC (varobj_p) **new, | |
965 | VEC (varobj_p) **unchanged, | |
966 | int *cchanged, | |
967 | int index, | |
968 | const char *name, | |
969 | struct value *value) | |
970 | { | |
971 | if (VEC_length (varobj_p, var->children) < index + 1) | |
972 | { | |
973 | /* There's no child yet. */ | |
974 | struct varobj *child = varobj_add_child (var, name, value); | |
a109c7c1 | 975 | |
0cc7d26f TT |
976 | if (new) |
977 | { | |
978 | VEC_safe_push (varobj_p, *new, child); | |
979 | *cchanged = 1; | |
980 | } | |
981 | } | |
982 | else | |
983 | { | |
984 | varobj_p existing = VEC_index (varobj_p, var->children, index); | |
a109c7c1 | 985 | |
0cc7d26f TT |
986 | if (install_new_value (existing, value, 0)) |
987 | { | |
988 | if (changed) | |
989 | VEC_safe_push (varobj_p, *changed, existing); | |
990 | } | |
991 | else if (unchanged) | |
992 | VEC_safe_push (varobj_p, *unchanged, existing); | |
993 | } | |
994 | } | |
995 | ||
0cc7d26f TT |
996 | static int |
997 | dynamic_varobj_has_child_method (struct varobj *var) | |
998 | { | |
999 | struct cleanup *back_to; | |
1000 | PyObject *printer = var->pretty_printer; | |
1001 | int result; | |
1002 | ||
1003 | back_to = varobj_ensure_python_env (var); | |
1004 | result = PyObject_HasAttr (printer, gdbpy_children_cst); | |
1005 | do_cleanups (back_to); | |
1006 | return result; | |
1007 | } | |
1008 | ||
1009 | #endif | |
1010 | ||
b6313243 TT |
1011 | static int |
1012 | update_dynamic_varobj_children (struct varobj *var, | |
1013 | VEC (varobj_p) **changed, | |
0cc7d26f TT |
1014 | VEC (varobj_p) **new, |
1015 | VEC (varobj_p) **unchanged, | |
1016 | int *cchanged, | |
1017 | int update_children, | |
1018 | int from, | |
1019 | int to) | |
b6313243 TT |
1020 | { |
1021 | #if HAVE_PYTHON | |
b6313243 TT |
1022 | struct cleanup *back_to; |
1023 | PyObject *children; | |
b6313243 | 1024 | int i; |
b6313243 | 1025 | PyObject *printer = var->pretty_printer; |
b6313243 | 1026 | |
d452c4bc | 1027 | back_to = varobj_ensure_python_env (var); |
b6313243 TT |
1028 | |
1029 | *cchanged = 0; | |
1030 | if (!PyObject_HasAttr (printer, gdbpy_children_cst)) | |
1031 | { | |
1032 | do_cleanups (back_to); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
0cc7d26f | 1036 | if (update_children || !var->child_iter) |
b6313243 | 1037 | { |
0cc7d26f TT |
1038 | children = PyObject_CallMethodObjArgs (printer, gdbpy_children_cst, |
1039 | NULL); | |
b6313243 | 1040 | |
0cc7d26f TT |
1041 | if (!children) |
1042 | { | |
1043 | gdbpy_print_stack (); | |
1044 | error (_("Null value returned for children")); | |
1045 | } | |
b6313243 | 1046 | |
0cc7d26f | 1047 | make_cleanup_py_decref (children); |
b6313243 | 1048 | |
0cc7d26f TT |
1049 | if (!PyIter_Check (children)) |
1050 | error (_("Returned value is not iterable")); | |
1051 | ||
1052 | Py_XDECREF (var->child_iter); | |
1053 | var->child_iter = PyObject_GetIter (children); | |
1054 | if (!var->child_iter) | |
1055 | { | |
1056 | gdbpy_print_stack (); | |
1057 | error (_("Could not get children iterator")); | |
1058 | } | |
1059 | ||
1060 | Py_XDECREF (var->saved_item); | |
1061 | var->saved_item = NULL; | |
1062 | ||
1063 | i = 0; | |
b6313243 | 1064 | } |
0cc7d26f TT |
1065 | else |
1066 | i = VEC_length (varobj_p, var->children); | |
b6313243 | 1067 | |
0cc7d26f TT |
1068 | /* We ask for one extra child, so that MI can report whether there |
1069 | are more children. */ | |
1070 | for (; to < 0 || i < to + 1; ++i) | |
b6313243 | 1071 | { |
0cc7d26f | 1072 | PyObject *item; |
a4c8e806 | 1073 | int force_done = 0; |
b6313243 | 1074 | |
0cc7d26f TT |
1075 | /* See if there was a leftover from last time. */ |
1076 | if (var->saved_item) | |
1077 | { | |
1078 | item = var->saved_item; | |
1079 | var->saved_item = NULL; | |
1080 | } | |
1081 | else | |
1082 | item = PyIter_Next (var->child_iter); | |
b6313243 | 1083 | |
0cc7d26f | 1084 | if (!item) |
a4c8e806 TT |
1085 | { |
1086 | /* Normal end of iteration. */ | |
1087 | if (!PyErr_Occurred ()) | |
1088 | break; | |
1089 | ||
1090 | /* If we got a memory error, just use the text as the | |
1091 | item. */ | |
1092 | if (PyErr_ExceptionMatches (gdbpy_gdb_memory_error)) | |
1093 | { | |
1094 | PyObject *type, *value, *trace; | |
1095 | char *name_str, *value_str; | |
1096 | ||
1097 | PyErr_Fetch (&type, &value, &trace); | |
1098 | value_str = gdbpy_exception_to_string (type, value); | |
1099 | Py_XDECREF (type); | |
1100 | Py_XDECREF (value); | |
1101 | Py_XDECREF (trace); | |
1102 | if (!value_str) | |
1103 | { | |
1104 | gdbpy_print_stack (); | |
1105 | break; | |
1106 | } | |
1107 | ||
1108 | name_str = xstrprintf ("<error at %d>", i); | |
1109 | item = Py_BuildValue ("(ss)", name_str, value_str); | |
1110 | xfree (name_str); | |
1111 | xfree (value_str); | |
1112 | if (!item) | |
1113 | { | |
1114 | gdbpy_print_stack (); | |
1115 | break; | |
1116 | } | |
1117 | ||
1118 | force_done = 1; | |
1119 | } | |
1120 | else | |
1121 | { | |
1122 | /* Any other kind of error. */ | |
1123 | gdbpy_print_stack (); | |
1124 | break; | |
1125 | } | |
1126 | } | |
b6313243 | 1127 | |
0cc7d26f TT |
1128 | /* We don't want to push the extra child on any report list. */ |
1129 | if (to < 0 || i < to) | |
b6313243 | 1130 | { |
0cc7d26f | 1131 | PyObject *py_v; |
ddd49eee | 1132 | const char *name; |
0cc7d26f TT |
1133 | struct value *v; |
1134 | struct cleanup *inner; | |
1135 | int can_mention = from < 0 || i >= from; | |
1136 | ||
1137 | inner = make_cleanup_py_decref (item); | |
1138 | ||
1139 | if (!PyArg_ParseTuple (item, "sO", &name, &py_v)) | |
a4c8e806 TT |
1140 | { |
1141 | gdbpy_print_stack (); | |
1142 | error (_("Invalid item from the child list")); | |
1143 | } | |
0cc7d26f TT |
1144 | |
1145 | v = convert_value_from_python (py_v); | |
8dc78533 JK |
1146 | if (v == NULL) |
1147 | gdbpy_print_stack (); | |
0cc7d26f TT |
1148 | install_dynamic_child (var, can_mention ? changed : NULL, |
1149 | can_mention ? new : NULL, | |
1150 | can_mention ? unchanged : NULL, | |
1151 | can_mention ? cchanged : NULL, i, name, v); | |
1152 | do_cleanups (inner); | |
b6313243 | 1153 | } |
0cc7d26f | 1154 | else |
b6313243 | 1155 | { |
0cc7d26f TT |
1156 | Py_XDECREF (var->saved_item); |
1157 | var->saved_item = item; | |
b6313243 | 1158 | |
0cc7d26f TT |
1159 | /* We want to truncate the child list just before this |
1160 | element. */ | |
1161 | break; | |
1162 | } | |
a4c8e806 TT |
1163 | |
1164 | if (force_done) | |
1165 | break; | |
b6313243 TT |
1166 | } |
1167 | ||
1168 | if (i < VEC_length (varobj_p, var->children)) | |
1169 | { | |
0cc7d26f | 1170 | int j; |
a109c7c1 | 1171 | |
0cc7d26f TT |
1172 | *cchanged = 1; |
1173 | for (j = i; j < VEC_length (varobj_p, var->children); ++j) | |
1174 | varobj_delete (VEC_index (varobj_p, var->children, j), NULL, 0); | |
1175 | VEC_truncate (varobj_p, var->children, i); | |
b6313243 | 1176 | } |
0cc7d26f TT |
1177 | |
1178 | /* If there are fewer children than requested, note that the list of | |
1179 | children changed. */ | |
1180 | if (to >= 0 && VEC_length (varobj_p, var->children) < to) | |
1181 | *cchanged = 1; | |
1182 | ||
b6313243 TT |
1183 | var->num_children = VEC_length (varobj_p, var->children); |
1184 | ||
1185 | do_cleanups (back_to); | |
1186 | ||
b6313243 TT |
1187 | return 1; |
1188 | #else | |
1189 | gdb_assert (0 && "should never be called if Python is not enabled"); | |
1190 | #endif | |
1191 | } | |
25d5ea92 | 1192 | |
8b93c638 JM |
1193 | int |
1194 | varobj_get_num_children (struct varobj *var) | |
1195 | { | |
1196 | if (var->num_children == -1) | |
b6313243 | 1197 | { |
0cc7d26f TT |
1198 | if (var->pretty_printer) |
1199 | { | |
1200 | int dummy; | |
1201 | ||
1202 | /* If we have a dynamic varobj, don't report -1 children. | |
1203 | So, try to fetch some children first. */ | |
1204 | update_dynamic_varobj_children (var, NULL, NULL, NULL, &dummy, | |
1205 | 0, 0, 0); | |
1206 | } | |
1207 | else | |
b6313243 TT |
1208 | var->num_children = number_of_children (var); |
1209 | } | |
8b93c638 | 1210 | |
0cc7d26f | 1211 | return var->num_children >= 0 ? var->num_children : 0; |
8b93c638 JM |
1212 | } |
1213 | ||
1214 | /* Creates a list of the immediate children of a variable object; | |
581e13c1 | 1215 | the return code is the number of such children or -1 on error. */ |
8b93c638 | 1216 | |
d56d46f5 | 1217 | VEC (varobj_p)* |
0cc7d26f | 1218 | varobj_list_children (struct varobj *var, int *from, int *to) |
8b93c638 | 1219 | { |
8b93c638 | 1220 | char *name; |
b6313243 TT |
1221 | int i, children_changed; |
1222 | ||
1223 | var->children_requested = 1; | |
1224 | ||
0cc7d26f TT |
1225 | if (var->pretty_printer) |
1226 | { | |
b6313243 TT |
1227 | /* This, in theory, can result in the number of children changing without |
1228 | frontend noticing. But well, calling -var-list-children on the same | |
1229 | varobj twice is not something a sane frontend would do. */ | |
0cc7d26f TT |
1230 | update_dynamic_varobj_children (var, NULL, NULL, NULL, &children_changed, |
1231 | 0, 0, *to); | |
1232 | restrict_range (var->children, from, to); | |
1233 | return var->children; | |
1234 | } | |
8b93c638 | 1235 | |
8b93c638 JM |
1236 | if (var->num_children == -1) |
1237 | var->num_children = number_of_children (var); | |
1238 | ||
74a44383 DJ |
1239 | /* If that failed, give up. */ |
1240 | if (var->num_children == -1) | |
d56d46f5 | 1241 | return var->children; |
74a44383 | 1242 | |
28335dcc VP |
1243 | /* If we're called when the list of children is not yet initialized, |
1244 | allocate enough elements in it. */ | |
1245 | while (VEC_length (varobj_p, var->children) < var->num_children) | |
1246 | VEC_safe_push (varobj_p, var->children, NULL); | |
1247 | ||
8b93c638 JM |
1248 | for (i = 0; i < var->num_children; i++) |
1249 | { | |
d56d46f5 | 1250 | varobj_p existing = VEC_index (varobj_p, var->children, i); |
28335dcc VP |
1251 | |
1252 | if (existing == NULL) | |
1253 | { | |
1254 | /* Either it's the first call to varobj_list_children for | |
1255 | this variable object, and the child was never created, | |
1256 | or it was explicitly deleted by the client. */ | |
1257 | name = name_of_child (var, i); | |
1258 | existing = create_child (var, i, name); | |
1259 | VEC_replace (varobj_p, var->children, i, existing); | |
1260 | } | |
8b93c638 JM |
1261 | } |
1262 | ||
0cc7d26f | 1263 | restrict_range (var->children, from, to); |
d56d46f5 | 1264 | return var->children; |
8b93c638 JM |
1265 | } |
1266 | ||
d8b65138 JK |
1267 | #if HAVE_PYTHON |
1268 | ||
b6313243 TT |
1269 | static struct varobj * |
1270 | varobj_add_child (struct varobj *var, const char *name, struct value *value) | |
1271 | { | |
1272 | varobj_p v = create_child_with_value (var, | |
1273 | VEC_length (varobj_p, var->children), | |
1274 | name, value); | |
a109c7c1 | 1275 | |
b6313243 | 1276 | VEC_safe_push (varobj_p, var->children, v); |
b6313243 TT |
1277 | return v; |
1278 | } | |
1279 | ||
d8b65138 JK |
1280 | #endif /* HAVE_PYTHON */ |
1281 | ||
8b93c638 | 1282 | /* Obtain the type of an object Variable as a string similar to the one gdb |
581e13c1 | 1283 | prints on the console. */ |
8b93c638 JM |
1284 | |
1285 | char * | |
1286 | varobj_get_type (struct varobj *var) | |
1287 | { | |
581e13c1 | 1288 | /* For the "fake" variables, do not return a type. (It's type is |
8756216b DP |
1289 | NULL, too.) |
1290 | Do not return a type for invalid variables as well. */ | |
1291 | if (CPLUS_FAKE_CHILD (var) || !var->root->is_valid) | |
8b93c638 JM |
1292 | return NULL; |
1293 | ||
1a4300e9 | 1294 | return type_to_string (var->type); |
8b93c638 JM |
1295 | } |
1296 | ||
1ecb4ee0 DJ |
1297 | /* Obtain the type of an object variable. */ |
1298 | ||
1299 | struct type * | |
1300 | varobj_get_gdb_type (struct varobj *var) | |
1301 | { | |
1302 | return var->type; | |
1303 | } | |
1304 | ||
85254831 KS |
1305 | /* Is VAR a path expression parent, i.e., can it be used to construct |
1306 | a valid path expression? */ | |
1307 | ||
1308 | static int | |
1309 | is_path_expr_parent (struct varobj *var) | |
1310 | { | |
1311 | struct type *type; | |
1312 | ||
1313 | /* "Fake" children are not path_expr parents. */ | |
1314 | if (CPLUS_FAKE_CHILD (var)) | |
1315 | return 0; | |
1316 | ||
1317 | type = get_value_type (var); | |
1318 | ||
1319 | /* Anonymous unions and structs are also not path_expr parents. */ | |
1320 | return !((TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1321 | || TYPE_CODE (type) == TYPE_CODE_UNION) | |
1322 | && TYPE_NAME (type) == NULL); | |
1323 | } | |
1324 | ||
1325 | /* Return the path expression parent for VAR. */ | |
1326 | ||
1327 | static struct varobj * | |
1328 | get_path_expr_parent (struct varobj *var) | |
1329 | { | |
1330 | struct varobj *parent = var; | |
1331 | ||
1332 | while (!is_root_p (parent) && !is_path_expr_parent (parent)) | |
1333 | parent = parent->parent; | |
1334 | ||
1335 | return parent; | |
1336 | } | |
1337 | ||
02142340 VP |
1338 | /* Return a pointer to the full rooted expression of varobj VAR. |
1339 | If it has not been computed yet, compute it. */ | |
1340 | char * | |
1341 | varobj_get_path_expr (struct varobj *var) | |
1342 | { | |
1343 | if (var->path_expr != NULL) | |
1344 | return var->path_expr; | |
1345 | else | |
1346 | { | |
1347 | /* For root varobjs, we initialize path_expr | |
1348 | when creating varobj, so here it should be | |
1349 | child varobj. */ | |
1350 | gdb_assert (!is_root_p (var)); | |
1351 | return (*var->root->lang->path_expr_of_child) (var); | |
1352 | } | |
1353 | } | |
1354 | ||
8b93c638 JM |
1355 | enum varobj_languages |
1356 | varobj_get_language (struct varobj *var) | |
1357 | { | |
1358 | return variable_language (var); | |
1359 | } | |
1360 | ||
1361 | int | |
1362 | varobj_get_attributes (struct varobj *var) | |
1363 | { | |
1364 | int attributes = 0; | |
1365 | ||
340a7723 | 1366 | if (varobj_editable_p (var)) |
581e13c1 | 1367 | /* FIXME: define masks for attributes. */ |
8b93c638 JM |
1368 | attributes |= 0x00000001; /* Editable */ |
1369 | ||
1370 | return attributes; | |
1371 | } | |
1372 | ||
0cc7d26f TT |
1373 | int |
1374 | varobj_pretty_printed_p (struct varobj *var) | |
1375 | { | |
1376 | return var->pretty_printer != NULL; | |
1377 | } | |
1378 | ||
de051565 MK |
1379 | char * |
1380 | varobj_get_formatted_value (struct varobj *var, | |
1381 | enum varobj_display_formats format) | |
1382 | { | |
1383 | return my_value_of_variable (var, format); | |
1384 | } | |
1385 | ||
8b93c638 JM |
1386 | char * |
1387 | varobj_get_value (struct varobj *var) | |
1388 | { | |
de051565 | 1389 | return my_value_of_variable (var, var->format); |
8b93c638 JM |
1390 | } |
1391 | ||
1392 | /* Set the value of an object variable (if it is editable) to the | |
581e13c1 MS |
1393 | value of the given expression. */ |
1394 | /* Note: Invokes functions that can call error(). */ | |
8b93c638 JM |
1395 | |
1396 | int | |
1397 | varobj_set_value (struct varobj *var, char *expression) | |
1398 | { | |
34365054 | 1399 | struct value *val = NULL; /* Initialize to keep gcc happy. */ |
8b93c638 | 1400 | /* The argument "expression" contains the variable's new value. |
581e13c1 MS |
1401 | We need to first construct a legal expression for this -- ugh! */ |
1402 | /* Does this cover all the bases? */ | |
8b93c638 | 1403 | struct expression *exp; |
34365054 | 1404 | struct value *value = NULL; /* Initialize to keep gcc happy. */ |
8b93c638 | 1405 | int saved_input_radix = input_radix; |
340a7723 | 1406 | char *s = expression; |
8e7b59a5 | 1407 | volatile struct gdb_exception except; |
8b93c638 | 1408 | |
340a7723 | 1409 | gdb_assert (varobj_editable_p (var)); |
8b93c638 | 1410 | |
581e13c1 | 1411 | input_radix = 10; /* ALWAYS reset to decimal temporarily. */ |
340a7723 | 1412 | exp = parse_exp_1 (&s, 0, 0); |
8e7b59a5 KS |
1413 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1414 | { | |
1415 | value = evaluate_expression (exp); | |
1416 | } | |
1417 | ||
1418 | if (except.reason < 0) | |
340a7723 | 1419 | { |
581e13c1 | 1420 | /* We cannot proceed without a valid expression. */ |
340a7723 NR |
1421 | xfree (exp); |
1422 | return 0; | |
8b93c638 JM |
1423 | } |
1424 | ||
340a7723 NR |
1425 | /* All types that are editable must also be changeable. */ |
1426 | gdb_assert (varobj_value_is_changeable_p (var)); | |
1427 | ||
1428 | /* The value of a changeable variable object must not be lazy. */ | |
1429 | gdb_assert (!value_lazy (var->value)); | |
1430 | ||
1431 | /* Need to coerce the input. We want to check if the | |
1432 | value of the variable object will be different | |
1433 | after assignment, and the first thing value_assign | |
1434 | does is coerce the input. | |
1435 | For example, if we are assigning an array to a pointer variable we | |
b021a221 | 1436 | should compare the pointer with the array's address, not with the |
340a7723 NR |
1437 | array's content. */ |
1438 | value = coerce_array (value); | |
1439 | ||
8e7b59a5 KS |
1440 | /* The new value may be lazy. value_assign, or |
1441 | rather value_contents, will take care of this. */ | |
1442 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1443 | { | |
1444 | val = value_assign (var->value, value); | |
1445 | } | |
1446 | ||
1447 | if (except.reason < 0) | |
340a7723 | 1448 | return 0; |
8e7b59a5 | 1449 | |
340a7723 NR |
1450 | /* If the value has changed, record it, so that next -var-update can |
1451 | report this change. If a variable had a value of '1', we've set it | |
1452 | to '333' and then set again to '1', when -var-update will report this | |
1453 | variable as changed -- because the first assignment has set the | |
1454 | 'updated' flag. There's no need to optimize that, because return value | |
1455 | of -var-update should be considered an approximation. */ | |
581e13c1 | 1456 | var->updated = install_new_value (var, val, 0 /* Compare values. */); |
340a7723 NR |
1457 | input_radix = saved_input_radix; |
1458 | return 1; | |
8b93c638 JM |
1459 | } |
1460 | ||
0cc7d26f TT |
1461 | #if HAVE_PYTHON |
1462 | ||
1463 | /* A helper function to install a constructor function and visualizer | |
1464 | in a varobj. */ | |
1465 | ||
1466 | static void | |
1467 | install_visualizer (struct varobj *var, PyObject *constructor, | |
1468 | PyObject *visualizer) | |
1469 | { | |
1470 | Py_XDECREF (var->constructor); | |
1471 | var->constructor = constructor; | |
1472 | ||
1473 | Py_XDECREF (var->pretty_printer); | |
1474 | var->pretty_printer = visualizer; | |
1475 | ||
1476 | Py_XDECREF (var->child_iter); | |
1477 | var->child_iter = NULL; | |
1478 | } | |
1479 | ||
1480 | /* Install the default visualizer for VAR. */ | |
1481 | ||
1482 | static void | |
1483 | install_default_visualizer (struct varobj *var) | |
1484 | { | |
d65aec65 PM |
1485 | /* Do not install a visualizer on a CPLUS_FAKE_CHILD. */ |
1486 | if (CPLUS_FAKE_CHILD (var)) | |
1487 | return; | |
1488 | ||
0cc7d26f TT |
1489 | if (pretty_printing) |
1490 | { | |
1491 | PyObject *pretty_printer = NULL; | |
1492 | ||
1493 | if (var->value) | |
1494 | { | |
1495 | pretty_printer = gdbpy_get_varobj_pretty_printer (var->value); | |
1496 | if (! pretty_printer) | |
1497 | { | |
1498 | gdbpy_print_stack (); | |
1499 | error (_("Cannot instantiate printer for default visualizer")); | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | if (pretty_printer == Py_None) | |
1504 | { | |
1505 | Py_DECREF (pretty_printer); | |
1506 | pretty_printer = NULL; | |
1507 | } | |
1508 | ||
1509 | install_visualizer (var, NULL, pretty_printer); | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | /* Instantiate and install a visualizer for VAR using CONSTRUCTOR to | |
1514 | make a new object. */ | |
1515 | ||
1516 | static void | |
1517 | construct_visualizer (struct varobj *var, PyObject *constructor) | |
1518 | { | |
1519 | PyObject *pretty_printer; | |
1520 | ||
d65aec65 PM |
1521 | /* Do not install a visualizer on a CPLUS_FAKE_CHILD. */ |
1522 | if (CPLUS_FAKE_CHILD (var)) | |
1523 | return; | |
1524 | ||
0cc7d26f TT |
1525 | Py_INCREF (constructor); |
1526 | if (constructor == Py_None) | |
1527 | pretty_printer = NULL; | |
1528 | else | |
1529 | { | |
1530 | pretty_printer = instantiate_pretty_printer (constructor, var->value); | |
1531 | if (! pretty_printer) | |
1532 | { | |
1533 | gdbpy_print_stack (); | |
1534 | Py_DECREF (constructor); | |
1535 | constructor = Py_None; | |
1536 | Py_INCREF (constructor); | |
1537 | } | |
1538 | ||
1539 | if (pretty_printer == Py_None) | |
1540 | { | |
1541 | Py_DECREF (pretty_printer); | |
1542 | pretty_printer = NULL; | |
1543 | } | |
1544 | } | |
1545 | ||
1546 | install_visualizer (var, constructor, pretty_printer); | |
1547 | } | |
1548 | ||
1549 | #endif /* HAVE_PYTHON */ | |
1550 | ||
1551 | /* A helper function for install_new_value. This creates and installs | |
1552 | a visualizer for VAR, if appropriate. */ | |
1553 | ||
1554 | static void | |
1555 | install_new_value_visualizer (struct varobj *var) | |
1556 | { | |
1557 | #if HAVE_PYTHON | |
1558 | /* If the constructor is None, then we want the raw value. If VAR | |
1559 | does not have a value, just skip this. */ | |
1560 | if (var->constructor != Py_None && var->value) | |
1561 | { | |
1562 | struct cleanup *cleanup; | |
0cc7d26f TT |
1563 | |
1564 | cleanup = varobj_ensure_python_env (var); | |
1565 | ||
1566 | if (!var->constructor) | |
1567 | install_default_visualizer (var); | |
1568 | else | |
1569 | construct_visualizer (var, var->constructor); | |
1570 | ||
1571 | do_cleanups (cleanup); | |
1572 | } | |
1573 | #else | |
1574 | /* Do nothing. */ | |
1575 | #endif | |
1576 | } | |
1577 | ||
acd65feb VP |
1578 | /* Assign a new value to a variable object. If INITIAL is non-zero, |
1579 | this is the first assignement after the variable object was just | |
1580 | created, or changed type. In that case, just assign the value | |
1581 | and return 0. | |
581e13c1 MS |
1582 | Otherwise, assign the new value, and return 1 if the value is |
1583 | different from the current one, 0 otherwise. The comparison is | |
1584 | done on textual representation of value. Therefore, some types | |
1585 | need not be compared. E.g. for structures the reported value is | |
1586 | always "{...}", so no comparison is necessary here. If the old | |
1587 | value was NULL and new one is not, or vice versa, we always return 1. | |
b26ed50d VP |
1588 | |
1589 | The VALUE parameter should not be released -- the function will | |
1590 | take care of releasing it when needed. */ | |
acd65feb VP |
1591 | static int |
1592 | install_new_value (struct varobj *var, struct value *value, int initial) | |
1593 | { | |
1594 | int changeable; | |
1595 | int need_to_fetch; | |
1596 | int changed = 0; | |
25d5ea92 | 1597 | int intentionally_not_fetched = 0; |
7a4d50bf | 1598 | char *print_value = NULL; |
acd65feb | 1599 | |
acd65feb | 1600 | /* We need to know the varobj's type to decide if the value should |
3e43a32a | 1601 | be fetched or not. C++ fake children (public/protected/private) |
581e13c1 | 1602 | don't have a type. */ |
acd65feb | 1603 | gdb_assert (var->type || CPLUS_FAKE_CHILD (var)); |
b2c2bd75 | 1604 | changeable = varobj_value_is_changeable_p (var); |
b6313243 TT |
1605 | |
1606 | /* If the type has custom visualizer, we consider it to be always | |
581e13c1 | 1607 | changeable. FIXME: need to make sure this behaviour will not |
b6313243 TT |
1608 | mess up read-sensitive values. */ |
1609 | if (var->pretty_printer) | |
1610 | changeable = 1; | |
1611 | ||
acd65feb VP |
1612 | need_to_fetch = changeable; |
1613 | ||
b26ed50d VP |
1614 | /* We are not interested in the address of references, and given |
1615 | that in C++ a reference is not rebindable, it cannot | |
1616 | meaningfully change. So, get hold of the real value. */ | |
1617 | if (value) | |
0cc7d26f | 1618 | value = coerce_ref (value); |
b26ed50d | 1619 | |
acd65feb VP |
1620 | if (var->type && TYPE_CODE (var->type) == TYPE_CODE_UNION) |
1621 | /* For unions, we need to fetch the value implicitly because | |
1622 | of implementation of union member fetch. When gdb | |
1623 | creates a value for a field and the value of the enclosing | |
1624 | structure is not lazy, it immediately copies the necessary | |
1625 | bytes from the enclosing values. If the enclosing value is | |
1626 | lazy, the call to value_fetch_lazy on the field will read | |
1627 | the data from memory. For unions, that means we'll read the | |
1628 | same memory more than once, which is not desirable. So | |
1629 | fetch now. */ | |
1630 | need_to_fetch = 1; | |
1631 | ||
1632 | /* The new value might be lazy. If the type is changeable, | |
1633 | that is we'll be comparing values of this type, fetch the | |
1634 | value now. Otherwise, on the next update the old value | |
1635 | will be lazy, which means we've lost that old value. */ | |
1636 | if (need_to_fetch && value && value_lazy (value)) | |
1637 | { | |
25d5ea92 VP |
1638 | struct varobj *parent = var->parent; |
1639 | int frozen = var->frozen; | |
a109c7c1 | 1640 | |
25d5ea92 VP |
1641 | for (; !frozen && parent; parent = parent->parent) |
1642 | frozen |= parent->frozen; | |
1643 | ||
1644 | if (frozen && initial) | |
1645 | { | |
1646 | /* For variables that are frozen, or are children of frozen | |
1647 | variables, we don't do fetch on initial assignment. | |
1648 | For non-initial assignemnt we do the fetch, since it means we're | |
1649 | explicitly asked to compare the new value with the old one. */ | |
1650 | intentionally_not_fetched = 1; | |
1651 | } | |
8e7b59a5 | 1652 | else |
acd65feb | 1653 | { |
8e7b59a5 KS |
1654 | volatile struct gdb_exception except; |
1655 | ||
1656 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1657 | { | |
1658 | value_fetch_lazy (value); | |
1659 | } | |
1660 | ||
1661 | if (except.reason < 0) | |
1662 | { | |
1663 | /* Set the value to NULL, so that for the next -var-update, | |
1664 | we don't try to compare the new value with this value, | |
1665 | that we couldn't even read. */ | |
1666 | value = NULL; | |
1667 | } | |
acd65feb | 1668 | } |
acd65feb VP |
1669 | } |
1670 | ||
e848a8a5 TT |
1671 | /* Get a reference now, before possibly passing it to any Python |
1672 | code that might release it. */ | |
1673 | if (value != NULL) | |
1674 | value_incref (value); | |
b6313243 | 1675 | |
7a4d50bf VP |
1676 | /* Below, we'll be comparing string rendering of old and new |
1677 | values. Don't get string rendering if the value is | |
1678 | lazy -- if it is, the code above has decided that the value | |
1679 | should not be fetched. */ | |
0cc7d26f | 1680 | if (value && !value_lazy (value) && !var->pretty_printer) |
d452c4bc | 1681 | print_value = value_get_print_value (value, var->format, var); |
7a4d50bf | 1682 | |
acd65feb VP |
1683 | /* If the type is changeable, compare the old and the new values. |
1684 | If this is the initial assignment, we don't have any old value | |
1685 | to compare with. */ | |
7a4d50bf | 1686 | if (!initial && changeable) |
acd65feb | 1687 | { |
3e43a32a MS |
1688 | /* If the value of the varobj was changed by -var-set-value, |
1689 | then the value in the varobj and in the target is the same. | |
1690 | However, that value is different from the value that the | |
581e13c1 | 1691 | varobj had after the previous -var-update. So need to the |
3e43a32a | 1692 | varobj as changed. */ |
acd65feb | 1693 | if (var->updated) |
57e66780 | 1694 | { |
57e66780 DJ |
1695 | changed = 1; |
1696 | } | |
0cc7d26f | 1697 | else if (! var->pretty_printer) |
acd65feb VP |
1698 | { |
1699 | /* Try to compare the values. That requires that both | |
1700 | values are non-lazy. */ | |
25d5ea92 VP |
1701 | if (var->not_fetched && value_lazy (var->value)) |
1702 | { | |
1703 | /* This is a frozen varobj and the value was never read. | |
1704 | Presumably, UI shows some "never read" indicator. | |
1705 | Now that we've fetched the real value, we need to report | |
1706 | this varobj as changed so that UI can show the real | |
1707 | value. */ | |
1708 | changed = 1; | |
1709 | } | |
1710 | else if (var->value == NULL && value == NULL) | |
581e13c1 | 1711 | /* Equal. */ |
acd65feb VP |
1712 | ; |
1713 | else if (var->value == NULL || value == NULL) | |
57e66780 | 1714 | { |
57e66780 DJ |
1715 | changed = 1; |
1716 | } | |
acd65feb VP |
1717 | else |
1718 | { | |
1719 | gdb_assert (!value_lazy (var->value)); | |
1720 | gdb_assert (!value_lazy (value)); | |
85265413 | 1721 | |
57e66780 | 1722 | gdb_assert (var->print_value != NULL && print_value != NULL); |
85265413 | 1723 | if (strcmp (var->print_value, print_value) != 0) |
7a4d50bf | 1724 | changed = 1; |
acd65feb VP |
1725 | } |
1726 | } | |
1727 | } | |
85265413 | 1728 | |
ee342b23 VP |
1729 | if (!initial && !changeable) |
1730 | { | |
1731 | /* For values that are not changeable, we don't compare the values. | |
1732 | However, we want to notice if a value was not NULL and now is NULL, | |
1733 | or vise versa, so that we report when top-level varobjs come in scope | |
1734 | and leave the scope. */ | |
1735 | changed = (var->value != NULL) != (value != NULL); | |
1736 | } | |
1737 | ||
acd65feb | 1738 | /* We must always keep the new value, since children depend on it. */ |
25d5ea92 | 1739 | if (var->value != NULL && var->value != value) |
acd65feb VP |
1740 | value_free (var->value); |
1741 | var->value = value; | |
25d5ea92 VP |
1742 | if (value && value_lazy (value) && intentionally_not_fetched) |
1743 | var->not_fetched = 1; | |
1744 | else | |
1745 | var->not_fetched = 0; | |
acd65feb | 1746 | var->updated = 0; |
85265413 | 1747 | |
0cc7d26f TT |
1748 | install_new_value_visualizer (var); |
1749 | ||
1750 | /* If we installed a pretty-printer, re-compare the printed version | |
1751 | to see if the variable changed. */ | |
1752 | if (var->pretty_printer) | |
1753 | { | |
1754 | xfree (print_value); | |
1755 | print_value = value_get_print_value (var->value, var->format, var); | |
e8f781e2 TT |
1756 | if ((var->print_value == NULL && print_value != NULL) |
1757 | || (var->print_value != NULL && print_value == NULL) | |
1758 | || (var->print_value != NULL && print_value != NULL | |
1759 | && strcmp (var->print_value, print_value) != 0)) | |
0cc7d26f TT |
1760 | changed = 1; |
1761 | } | |
1762 | if (var->print_value) | |
1763 | xfree (var->print_value); | |
1764 | var->print_value = print_value; | |
1765 | ||
b26ed50d | 1766 | gdb_assert (!var->value || value_type (var->value)); |
acd65feb VP |
1767 | |
1768 | return changed; | |
1769 | } | |
acd65feb | 1770 | |
0cc7d26f TT |
1771 | /* Return the requested range for a varobj. VAR is the varobj. FROM |
1772 | and TO are out parameters; *FROM and *TO will be set to the | |
1773 | selected sub-range of VAR. If no range was selected using | |
1774 | -var-set-update-range, then both will be -1. */ | |
1775 | void | |
1776 | varobj_get_child_range (struct varobj *var, int *from, int *to) | |
b6313243 | 1777 | { |
0cc7d26f TT |
1778 | *from = var->from; |
1779 | *to = var->to; | |
b6313243 TT |
1780 | } |
1781 | ||
0cc7d26f TT |
1782 | /* Set the selected sub-range of children of VAR to start at index |
1783 | FROM and end at index TO. If either FROM or TO is less than zero, | |
1784 | this is interpreted as a request for all children. */ | |
1785 | void | |
1786 | varobj_set_child_range (struct varobj *var, int from, int to) | |
b6313243 | 1787 | { |
0cc7d26f TT |
1788 | var->from = from; |
1789 | var->to = to; | |
b6313243 TT |
1790 | } |
1791 | ||
1792 | void | |
1793 | varobj_set_visualizer (struct varobj *var, const char *visualizer) | |
1794 | { | |
1795 | #if HAVE_PYTHON | |
34fa1d9d MS |
1796 | PyObject *mainmod, *globals, *constructor; |
1797 | struct cleanup *back_to; | |
b6313243 | 1798 | |
d452c4bc | 1799 | back_to = varobj_ensure_python_env (var); |
b6313243 TT |
1800 | |
1801 | mainmod = PyImport_AddModule ("__main__"); | |
1802 | globals = PyModule_GetDict (mainmod); | |
1803 | Py_INCREF (globals); | |
1804 | make_cleanup_py_decref (globals); | |
1805 | ||
1806 | constructor = PyRun_String (visualizer, Py_eval_input, globals, globals); | |
b6313243 | 1807 | |
0cc7d26f | 1808 | if (! constructor) |
b6313243 TT |
1809 | { |
1810 | gdbpy_print_stack (); | |
da1f2771 | 1811 | error (_("Could not evaluate visualizer expression: %s"), visualizer); |
b6313243 TT |
1812 | } |
1813 | ||
0cc7d26f TT |
1814 | construct_visualizer (var, constructor); |
1815 | Py_XDECREF (constructor); | |
b6313243 | 1816 | |
0cc7d26f TT |
1817 | /* If there are any children now, wipe them. */ |
1818 | varobj_delete (var, NULL, 1 /* children only */); | |
1819 | var->num_children = -1; | |
b6313243 TT |
1820 | |
1821 | do_cleanups (back_to); | |
1822 | #else | |
da1f2771 | 1823 | error (_("Python support required")); |
b6313243 TT |
1824 | #endif |
1825 | } | |
1826 | ||
8b93c638 JM |
1827 | /* Update the values for a variable and its children. This is a |
1828 | two-pronged attack. First, re-parse the value for the root's | |
1829 | expression to see if it's changed. Then go all the way | |
1830 | through its children, reconstructing them and noting if they've | |
1831 | changed. | |
1832 | ||
25d5ea92 VP |
1833 | The EXPLICIT parameter specifies if this call is result |
1834 | of MI request to update this specific variable, or | |
581e13c1 | 1835 | result of implicit -var-update *. For implicit request, we don't |
25d5ea92 | 1836 | update frozen variables. |
705da579 | 1837 | |
581e13c1 | 1838 | NOTE: This function may delete the caller's varobj. If it |
8756216b DP |
1839 | returns TYPE_CHANGED, then it has done this and VARP will be modified |
1840 | to point to the new varobj. */ | |
8b93c638 | 1841 | |
1417b39d JB |
1842 | VEC(varobj_update_result) * |
1843 | varobj_update (struct varobj **varp, int explicit) | |
8b93c638 JM |
1844 | { |
1845 | int changed = 0; | |
25d5ea92 | 1846 | int type_changed = 0; |
8b93c638 | 1847 | int i; |
30b28db1 | 1848 | struct value *new; |
b6313243 | 1849 | VEC (varobj_update_result) *stack = NULL; |
f7f9ae2c | 1850 | VEC (varobj_update_result) *result = NULL; |
8b93c638 | 1851 | |
25d5ea92 VP |
1852 | /* Frozen means frozen -- we don't check for any change in |
1853 | this varobj, including its going out of scope, or | |
1854 | changing type. One use case for frozen varobjs is | |
1855 | retaining previously evaluated expressions, and we don't | |
1856 | want them to be reevaluated at all. */ | |
1857 | if (!explicit && (*varp)->frozen) | |
f7f9ae2c | 1858 | return result; |
8756216b DP |
1859 | |
1860 | if (!(*varp)->root->is_valid) | |
f7f9ae2c | 1861 | { |
cfce2ea2 | 1862 | varobj_update_result r = {0}; |
a109c7c1 | 1863 | |
cfce2ea2 | 1864 | r.varobj = *varp; |
f7f9ae2c VP |
1865 | r.status = VAROBJ_INVALID; |
1866 | VEC_safe_push (varobj_update_result, result, &r); | |
1867 | return result; | |
1868 | } | |
8b93c638 | 1869 | |
25d5ea92 | 1870 | if ((*varp)->root->rootvar == *varp) |
ae093f96 | 1871 | { |
cfce2ea2 | 1872 | varobj_update_result r = {0}; |
a109c7c1 | 1873 | |
cfce2ea2 | 1874 | r.varobj = *varp; |
f7f9ae2c VP |
1875 | r.status = VAROBJ_IN_SCOPE; |
1876 | ||
581e13c1 | 1877 | /* Update the root variable. value_of_root can return NULL |
25d5ea92 | 1878 | if the variable is no longer around, i.e. we stepped out of |
581e13c1 | 1879 | the frame in which a local existed. We are letting the |
25d5ea92 VP |
1880 | value_of_root variable dispose of the varobj if the type |
1881 | has changed. */ | |
25d5ea92 | 1882 | new = value_of_root (varp, &type_changed); |
f7f9ae2c VP |
1883 | r.varobj = *varp; |
1884 | ||
1885 | r.type_changed = type_changed; | |
ea56f9c2 | 1886 | if (install_new_value ((*varp), new, type_changed)) |
f7f9ae2c | 1887 | r.changed = 1; |
ea56f9c2 | 1888 | |
25d5ea92 | 1889 | if (new == NULL) |
f7f9ae2c | 1890 | r.status = VAROBJ_NOT_IN_SCOPE; |
b6313243 | 1891 | r.value_installed = 1; |
f7f9ae2c VP |
1892 | |
1893 | if (r.status == VAROBJ_NOT_IN_SCOPE) | |
b6313243 | 1894 | { |
0b4bc29a JK |
1895 | if (r.type_changed || r.changed) |
1896 | VEC_safe_push (varobj_update_result, result, &r); | |
b6313243 TT |
1897 | return result; |
1898 | } | |
1899 | ||
1900 | VEC_safe_push (varobj_update_result, stack, &r); | |
1901 | } | |
1902 | else | |
1903 | { | |
cfce2ea2 | 1904 | varobj_update_result r = {0}; |
a109c7c1 | 1905 | |
cfce2ea2 | 1906 | r.varobj = *varp; |
b6313243 | 1907 | VEC_safe_push (varobj_update_result, stack, &r); |
b20d8971 | 1908 | } |
8b93c638 | 1909 | |
8756216b | 1910 | /* Walk through the children, reconstructing them all. */ |
b6313243 | 1911 | while (!VEC_empty (varobj_update_result, stack)) |
8b93c638 | 1912 | { |
b6313243 TT |
1913 | varobj_update_result r = *(VEC_last (varobj_update_result, stack)); |
1914 | struct varobj *v = r.varobj; | |
1915 | ||
1916 | VEC_pop (varobj_update_result, stack); | |
1917 | ||
1918 | /* Update this variable, unless it's a root, which is already | |
1919 | updated. */ | |
1920 | if (!r.value_installed) | |
1921 | { | |
1922 | new = value_of_child (v->parent, v->index); | |
1923 | if (install_new_value (v, new, 0 /* type not changed */)) | |
1924 | { | |
1925 | r.changed = 1; | |
1926 | v->updated = 0; | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | /* We probably should not get children of a varobj that has a | |
1931 | pretty-printer, but for which -var-list-children was never | |
581e13c1 | 1932 | invoked. */ |
b6313243 TT |
1933 | if (v->pretty_printer) |
1934 | { | |
0cc7d26f | 1935 | VEC (varobj_p) *changed = 0, *new = 0, *unchanged = 0; |
26f9bcee | 1936 | int i, children_changed = 0; |
b6313243 TT |
1937 | |
1938 | if (v->frozen) | |
1939 | continue; | |
1940 | ||
0cc7d26f TT |
1941 | if (!v->children_requested) |
1942 | { | |
1943 | int dummy; | |
1944 | ||
1945 | /* If we initially did not have potential children, but | |
1946 | now we do, consider the varobj as changed. | |
1947 | Otherwise, if children were never requested, consider | |
1948 | it as unchanged -- presumably, such varobj is not yet | |
1949 | expanded in the UI, so we need not bother getting | |
1950 | it. */ | |
1951 | if (!varobj_has_more (v, 0)) | |
1952 | { | |
1953 | update_dynamic_varobj_children (v, NULL, NULL, NULL, | |
1954 | &dummy, 0, 0, 0); | |
1955 | if (varobj_has_more (v, 0)) | |
1956 | r.changed = 1; | |
1957 | } | |
1958 | ||
1959 | if (r.changed) | |
1960 | VEC_safe_push (varobj_update_result, result, &r); | |
1961 | ||
1962 | continue; | |
1963 | } | |
1964 | ||
b6313243 TT |
1965 | /* If update_dynamic_varobj_children returns 0, then we have |
1966 | a non-conforming pretty-printer, so we skip it. */ | |
0cc7d26f TT |
1967 | if (update_dynamic_varobj_children (v, &changed, &new, &unchanged, |
1968 | &children_changed, 1, | |
1969 | v->from, v->to)) | |
b6313243 | 1970 | { |
0cc7d26f | 1971 | if (children_changed || new) |
b6313243 | 1972 | { |
0cc7d26f TT |
1973 | r.children_changed = 1; |
1974 | r.new = new; | |
b6313243 | 1975 | } |
0cc7d26f TT |
1976 | /* Push in reverse order so that the first child is |
1977 | popped from the work stack first, and so will be | |
1978 | added to result first. This does not affect | |
1979 | correctness, just "nicer". */ | |
1980 | for (i = VEC_length (varobj_p, changed) - 1; i >= 0; --i) | |
b6313243 | 1981 | { |
0cc7d26f | 1982 | varobj_p tmp = VEC_index (varobj_p, changed, i); |
cfce2ea2 | 1983 | varobj_update_result r = {0}; |
a109c7c1 | 1984 | |
cfce2ea2 | 1985 | r.varobj = tmp; |
0cc7d26f | 1986 | r.changed = 1; |
b6313243 TT |
1987 | r.value_installed = 1; |
1988 | VEC_safe_push (varobj_update_result, stack, &r); | |
1989 | } | |
0cc7d26f TT |
1990 | for (i = VEC_length (varobj_p, unchanged) - 1; i >= 0; --i) |
1991 | { | |
1992 | varobj_p tmp = VEC_index (varobj_p, unchanged, i); | |
a109c7c1 | 1993 | |
0cc7d26f TT |
1994 | if (!tmp->frozen) |
1995 | { | |
cfce2ea2 | 1996 | varobj_update_result r = {0}; |
a109c7c1 | 1997 | |
cfce2ea2 | 1998 | r.varobj = tmp; |
0cc7d26f TT |
1999 | r.value_installed = 1; |
2000 | VEC_safe_push (varobj_update_result, stack, &r); | |
2001 | } | |
2002 | } | |
b6313243 TT |
2003 | if (r.changed || r.children_changed) |
2004 | VEC_safe_push (varobj_update_result, result, &r); | |
0cc7d26f TT |
2005 | |
2006 | /* Free CHANGED and UNCHANGED, but not NEW, because NEW | |
2007 | has been put into the result vector. */ | |
2008 | VEC_free (varobj_p, changed); | |
2009 | VEC_free (varobj_p, unchanged); | |
2010 | ||
b6313243 TT |
2011 | continue; |
2012 | } | |
2013 | } | |
28335dcc VP |
2014 | |
2015 | /* Push any children. Use reverse order so that the first | |
2016 | child is popped from the work stack first, and so | |
2017 | will be added to result first. This does not | |
2018 | affect correctness, just "nicer". */ | |
2019 | for (i = VEC_length (varobj_p, v->children)-1; i >= 0; --i) | |
8b93c638 | 2020 | { |
28335dcc | 2021 | varobj_p c = VEC_index (varobj_p, v->children, i); |
a109c7c1 | 2022 | |
28335dcc | 2023 | /* Child may be NULL if explicitly deleted by -var-delete. */ |
25d5ea92 | 2024 | if (c != NULL && !c->frozen) |
28335dcc | 2025 | { |
cfce2ea2 | 2026 | varobj_update_result r = {0}; |
a109c7c1 | 2027 | |
cfce2ea2 | 2028 | r.varobj = c; |
b6313243 | 2029 | VEC_safe_push (varobj_update_result, stack, &r); |
28335dcc | 2030 | } |
8b93c638 | 2031 | } |
b6313243 TT |
2032 | |
2033 | if (r.changed || r.type_changed) | |
2034 | VEC_safe_push (varobj_update_result, result, &r); | |
8b93c638 JM |
2035 | } |
2036 | ||
b6313243 TT |
2037 | VEC_free (varobj_update_result, stack); |
2038 | ||
f7f9ae2c | 2039 | return result; |
8b93c638 JM |
2040 | } |
2041 | \f | |
2042 | ||
2043 | /* Helper functions */ | |
2044 | ||
2045 | /* | |
2046 | * Variable object construction/destruction | |
2047 | */ | |
2048 | ||
2049 | static int | |
fba45db2 KB |
2050 | delete_variable (struct cpstack **resultp, struct varobj *var, |
2051 | int only_children_p) | |
8b93c638 JM |
2052 | { |
2053 | int delcount = 0; | |
2054 | ||
2055 | delete_variable_1 (resultp, &delcount, var, | |
2056 | only_children_p, 1 /* remove_from_parent_p */ ); | |
2057 | ||
2058 | return delcount; | |
2059 | } | |
2060 | ||
581e13c1 | 2061 | /* Delete the variable object VAR and its children. */ |
8b93c638 JM |
2062 | /* IMPORTANT NOTE: If we delete a variable which is a child |
2063 | and the parent is not removed we dump core. It must be always | |
581e13c1 | 2064 | initially called with remove_from_parent_p set. */ |
8b93c638 | 2065 | static void |
72330bd6 AC |
2066 | delete_variable_1 (struct cpstack **resultp, int *delcountp, |
2067 | struct varobj *var, int only_children_p, | |
2068 | int remove_from_parent_p) | |
8b93c638 | 2069 | { |
28335dcc | 2070 | int i; |
8b93c638 | 2071 | |
581e13c1 | 2072 | /* Delete any children of this variable, too. */ |
28335dcc VP |
2073 | for (i = 0; i < VEC_length (varobj_p, var->children); ++i) |
2074 | { | |
2075 | varobj_p child = VEC_index (varobj_p, var->children, i); | |
a109c7c1 | 2076 | |
214270ab VP |
2077 | if (!child) |
2078 | continue; | |
8b93c638 | 2079 | if (!remove_from_parent_p) |
28335dcc VP |
2080 | child->parent = NULL; |
2081 | delete_variable_1 (resultp, delcountp, child, 0, only_children_p); | |
8b93c638 | 2082 | } |
28335dcc | 2083 | VEC_free (varobj_p, var->children); |
8b93c638 | 2084 | |
581e13c1 | 2085 | /* if we were called to delete only the children we are done here. */ |
8b93c638 JM |
2086 | if (only_children_p) |
2087 | return; | |
2088 | ||
581e13c1 | 2089 | /* Otherwise, add it to the list of deleted ones and proceed to do so. */ |
73a93a32 | 2090 | /* If the name is null, this is a temporary variable, that has not |
581e13c1 | 2091 | yet been installed, don't report it, it belongs to the caller... */ |
73a93a32 | 2092 | if (var->obj_name != NULL) |
8b93c638 | 2093 | { |
5b616ba1 | 2094 | cppush (resultp, xstrdup (var->obj_name)); |
8b93c638 JM |
2095 | *delcountp = *delcountp + 1; |
2096 | } | |
2097 | ||
581e13c1 | 2098 | /* If this variable has a parent, remove it from its parent's list. */ |
8b93c638 JM |
2099 | /* OPTIMIZATION: if the parent of this variable is also being deleted, |
2100 | (as indicated by remove_from_parent_p) we don't bother doing an | |
2101 | expensive list search to find the element to remove when we are | |
581e13c1 | 2102 | discarding the list afterwards. */ |
72330bd6 | 2103 | if ((remove_from_parent_p) && (var->parent != NULL)) |
8b93c638 | 2104 | { |
28335dcc | 2105 | VEC_replace (varobj_p, var->parent->children, var->index, NULL); |
8b93c638 | 2106 | } |
72330bd6 | 2107 | |
73a93a32 JI |
2108 | if (var->obj_name != NULL) |
2109 | uninstall_variable (var); | |
8b93c638 | 2110 | |
581e13c1 | 2111 | /* Free memory associated with this variable. */ |
8b93c638 JM |
2112 | free_variable (var); |
2113 | } | |
2114 | ||
581e13c1 | 2115 | /* Install the given variable VAR with the object name VAR->OBJ_NAME. */ |
8b93c638 | 2116 | static int |
fba45db2 | 2117 | install_variable (struct varobj *var) |
8b93c638 JM |
2118 | { |
2119 | struct vlist *cv; | |
2120 | struct vlist *newvl; | |
2121 | const char *chp; | |
2122 | unsigned int index = 0; | |
2123 | unsigned int i = 1; | |
2124 | ||
2125 | for (chp = var->obj_name; *chp; chp++) | |
2126 | { | |
2127 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
2128 | } | |
2129 | ||
2130 | cv = *(varobj_table + index); | |
2131 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
2132 | cv = cv->next; | |
2133 | ||
2134 | if (cv != NULL) | |
8a3fe4f8 | 2135 | error (_("Duplicate variable object name")); |
8b93c638 | 2136 | |
581e13c1 | 2137 | /* Add varobj to hash table. */ |
8b93c638 JM |
2138 | newvl = xmalloc (sizeof (struct vlist)); |
2139 | newvl->next = *(varobj_table + index); | |
2140 | newvl->var = var; | |
2141 | *(varobj_table + index) = newvl; | |
2142 | ||
581e13c1 | 2143 | /* If root, add varobj to root list. */ |
b2c2bd75 | 2144 | if (is_root_p (var)) |
8b93c638 | 2145 | { |
581e13c1 | 2146 | /* Add to list of root variables. */ |
8b93c638 JM |
2147 | if (rootlist == NULL) |
2148 | var->root->next = NULL; | |
2149 | else | |
2150 | var->root->next = rootlist; | |
2151 | rootlist = var->root; | |
8b93c638 JM |
2152 | } |
2153 | ||
2154 | return 1; /* OK */ | |
2155 | } | |
2156 | ||
581e13c1 | 2157 | /* Unistall the object VAR. */ |
8b93c638 | 2158 | static void |
fba45db2 | 2159 | uninstall_variable (struct varobj *var) |
8b93c638 JM |
2160 | { |
2161 | struct vlist *cv; | |
2162 | struct vlist *prev; | |
2163 | struct varobj_root *cr; | |
2164 | struct varobj_root *prer; | |
2165 | const char *chp; | |
2166 | unsigned int index = 0; | |
2167 | unsigned int i = 1; | |
2168 | ||
581e13c1 | 2169 | /* Remove varobj from hash table. */ |
8b93c638 JM |
2170 | for (chp = var->obj_name; *chp; chp++) |
2171 | { | |
2172 | index = (index + (i++ * (unsigned int) *chp)) % VAROBJ_TABLE_SIZE; | |
2173 | } | |
2174 | ||
2175 | cv = *(varobj_table + index); | |
2176 | prev = NULL; | |
2177 | while ((cv != NULL) && (strcmp (cv->var->obj_name, var->obj_name) != 0)) | |
2178 | { | |
2179 | prev = cv; | |
2180 | cv = cv->next; | |
2181 | } | |
2182 | ||
2183 | if (varobjdebug) | |
2184 | fprintf_unfiltered (gdb_stdlog, "Deleting %s\n", var->obj_name); | |
2185 | ||
2186 | if (cv == NULL) | |
2187 | { | |
72330bd6 AC |
2188 | warning |
2189 | ("Assertion failed: Could not find variable object \"%s\" to delete", | |
2190 | var->obj_name); | |
8b93c638 JM |
2191 | return; |
2192 | } | |
2193 | ||
2194 | if (prev == NULL) | |
2195 | *(varobj_table + index) = cv->next; | |
2196 | else | |
2197 | prev->next = cv->next; | |
2198 | ||
b8c9b27d | 2199 | xfree (cv); |
8b93c638 | 2200 | |
581e13c1 | 2201 | /* If root, remove varobj from root list. */ |
b2c2bd75 | 2202 | if (is_root_p (var)) |
8b93c638 | 2203 | { |
581e13c1 | 2204 | /* Remove from list of root variables. */ |
8b93c638 JM |
2205 | if (rootlist == var->root) |
2206 | rootlist = var->root->next; | |
2207 | else | |
2208 | { | |
2209 | prer = NULL; | |
2210 | cr = rootlist; | |
2211 | while ((cr != NULL) && (cr->rootvar != var)) | |
2212 | { | |
2213 | prer = cr; | |
2214 | cr = cr->next; | |
2215 | } | |
2216 | if (cr == NULL) | |
2217 | { | |
8f7e195f JB |
2218 | warning (_("Assertion failed: Could not find " |
2219 | "varobj \"%s\" in root list"), | |
3e43a32a | 2220 | var->obj_name); |
8b93c638 JM |
2221 | return; |
2222 | } | |
2223 | if (prer == NULL) | |
2224 | rootlist = NULL; | |
2225 | else | |
2226 | prer->next = cr->next; | |
2227 | } | |
8b93c638 JM |
2228 | } |
2229 | ||
2230 | } | |
2231 | ||
581e13c1 | 2232 | /* Create and install a child of the parent of the given name. */ |
8b93c638 | 2233 | static struct varobj * |
fba45db2 | 2234 | create_child (struct varobj *parent, int index, char *name) |
b6313243 TT |
2235 | { |
2236 | return create_child_with_value (parent, index, name, | |
2237 | value_of_child (parent, index)); | |
2238 | } | |
2239 | ||
85254831 KS |
2240 | /* Does CHILD represent a child with no name? This happens when |
2241 | the child is an anonmous struct or union and it has no field name | |
2242 | in its parent variable. | |
2243 | ||
2244 | This has already been determined by *_describe_child. The easiest | |
2245 | thing to do is to compare the child's name with ANONYMOUS_*_NAME. */ | |
2246 | ||
2247 | static int | |
2248 | is_anonymous_child (struct varobj *child) | |
2249 | { | |
2250 | return (strcmp (child->name, ANONYMOUS_STRUCT_NAME) == 0 | |
2251 | || strcmp (child->name, ANONYMOUS_UNION_NAME) == 0); | |
2252 | } | |
2253 | ||
b6313243 TT |
2254 | static struct varobj * |
2255 | create_child_with_value (struct varobj *parent, int index, const char *name, | |
2256 | struct value *value) | |
8b93c638 JM |
2257 | { |
2258 | struct varobj *child; | |
2259 | char *childs_name; | |
2260 | ||
2261 | child = new_variable (); | |
2262 | ||
581e13c1 | 2263 | /* Name is allocated by name_of_child. */ |
b6313243 TT |
2264 | /* FIXME: xstrdup should not be here. */ |
2265 | child->name = xstrdup (name); | |
8b93c638 | 2266 | child->index = index; |
8b93c638 JM |
2267 | child->parent = parent; |
2268 | child->root = parent->root; | |
85254831 KS |
2269 | |
2270 | if (is_anonymous_child (child)) | |
2271 | childs_name = xstrprintf ("%s.%d_anonymous", parent->obj_name, index); | |
2272 | else | |
2273 | childs_name = xstrprintf ("%s.%s", parent->obj_name, name); | |
8b93c638 | 2274 | child->obj_name = childs_name; |
85254831 | 2275 | |
8b93c638 JM |
2276 | install_variable (child); |
2277 | ||
acd65feb VP |
2278 | /* Compute the type of the child. Must do this before |
2279 | calling install_new_value. */ | |
2280 | if (value != NULL) | |
2281 | /* If the child had no evaluation errors, var->value | |
581e13c1 | 2282 | will be non-NULL and contain a valid type. */ |
acd65feb VP |
2283 | child->type = value_type (value); |
2284 | else | |
581e13c1 | 2285 | /* Otherwise, we must compute the type. */ |
acd65feb VP |
2286 | child->type = (*child->root->lang->type_of_child) (child->parent, |
2287 | child->index); | |
2288 | install_new_value (child, value, 1); | |
2289 | ||
8b93c638 JM |
2290 | return child; |
2291 | } | |
8b93c638 JM |
2292 | \f |
2293 | ||
2294 | /* | |
2295 | * Miscellaneous utility functions. | |
2296 | */ | |
2297 | ||
581e13c1 | 2298 | /* Allocate memory and initialize a new variable. */ |
8b93c638 JM |
2299 | static struct varobj * |
2300 | new_variable (void) | |
2301 | { | |
2302 | struct varobj *var; | |
2303 | ||
2304 | var = (struct varobj *) xmalloc (sizeof (struct varobj)); | |
2305 | var->name = NULL; | |
02142340 | 2306 | var->path_expr = NULL; |
8b93c638 JM |
2307 | var->obj_name = NULL; |
2308 | var->index = -1; | |
2309 | var->type = NULL; | |
2310 | var->value = NULL; | |
8b93c638 JM |
2311 | var->num_children = -1; |
2312 | var->parent = NULL; | |
2313 | var->children = NULL; | |
2314 | var->format = 0; | |
2315 | var->root = NULL; | |
fb9b6b35 | 2316 | var->updated = 0; |
85265413 | 2317 | var->print_value = NULL; |
25d5ea92 VP |
2318 | var->frozen = 0; |
2319 | var->not_fetched = 0; | |
b6313243 | 2320 | var->children_requested = 0; |
0cc7d26f TT |
2321 | var->from = -1; |
2322 | var->to = -1; | |
2323 | var->constructor = 0; | |
b6313243 | 2324 | var->pretty_printer = 0; |
0cc7d26f TT |
2325 | var->child_iter = 0; |
2326 | var->saved_item = 0; | |
8b93c638 JM |
2327 | |
2328 | return var; | |
2329 | } | |
2330 | ||
581e13c1 | 2331 | /* Allocate memory and initialize a new root variable. */ |
8b93c638 JM |
2332 | static struct varobj * |
2333 | new_root_variable (void) | |
2334 | { | |
2335 | struct varobj *var = new_variable (); | |
a109c7c1 | 2336 | |
3e43a32a | 2337 | var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root)); |
8b93c638 JM |
2338 | var->root->lang = NULL; |
2339 | var->root->exp = NULL; | |
2340 | var->root->valid_block = NULL; | |
7a424e99 | 2341 | var->root->frame = null_frame_id; |
a5defcdc | 2342 | var->root->floating = 0; |
8b93c638 | 2343 | var->root->rootvar = NULL; |
8756216b | 2344 | var->root->is_valid = 1; |
8b93c638 JM |
2345 | |
2346 | return var; | |
2347 | } | |
2348 | ||
581e13c1 | 2349 | /* Free any allocated memory associated with VAR. */ |
8b93c638 | 2350 | static void |
fba45db2 | 2351 | free_variable (struct varobj *var) |
8b93c638 | 2352 | { |
d452c4bc UW |
2353 | #if HAVE_PYTHON |
2354 | if (var->pretty_printer) | |
2355 | { | |
2356 | struct cleanup *cleanup = varobj_ensure_python_env (var); | |
0cc7d26f TT |
2357 | Py_XDECREF (var->constructor); |
2358 | Py_XDECREF (var->pretty_printer); | |
2359 | Py_XDECREF (var->child_iter); | |
2360 | Py_XDECREF (var->saved_item); | |
d452c4bc UW |
2361 | do_cleanups (cleanup); |
2362 | } | |
2363 | #endif | |
2364 | ||
36746093 JK |
2365 | value_free (var->value); |
2366 | ||
581e13c1 | 2367 | /* Free the expression if this is a root variable. */ |
b2c2bd75 | 2368 | if (is_root_p (var)) |
8b93c638 | 2369 | { |
3038237c | 2370 | xfree (var->root->exp); |
8038e1e2 | 2371 | xfree (var->root); |
8b93c638 JM |
2372 | } |
2373 | ||
8038e1e2 AC |
2374 | xfree (var->name); |
2375 | xfree (var->obj_name); | |
85265413 | 2376 | xfree (var->print_value); |
02142340 | 2377 | xfree (var->path_expr); |
8038e1e2 | 2378 | xfree (var); |
8b93c638 JM |
2379 | } |
2380 | ||
74b7792f AC |
2381 | static void |
2382 | do_free_variable_cleanup (void *var) | |
2383 | { | |
2384 | free_variable (var); | |
2385 | } | |
2386 | ||
2387 | static struct cleanup * | |
2388 | make_cleanup_free_variable (struct varobj *var) | |
2389 | { | |
2390 | return make_cleanup (do_free_variable_cleanup, var); | |
2391 | } | |
2392 | ||
581e13c1 | 2393 | /* This returns the type of the variable. It also skips past typedefs |
6766a268 | 2394 | to return the real type of the variable. |
94b66fa7 KS |
2395 | |
2396 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
581e13c1 | 2397 | except within get_target_type and get_type. */ |
8b93c638 | 2398 | static struct type * |
fba45db2 | 2399 | get_type (struct varobj *var) |
8b93c638 JM |
2400 | { |
2401 | struct type *type; | |
8b93c638 | 2402 | |
a109c7c1 | 2403 | type = var->type; |
6766a268 DJ |
2404 | if (type != NULL) |
2405 | type = check_typedef (type); | |
8b93c638 JM |
2406 | |
2407 | return type; | |
2408 | } | |
2409 | ||
6e2a9270 VP |
2410 | /* Return the type of the value that's stored in VAR, |
2411 | or that would have being stored there if the | |
581e13c1 | 2412 | value were accessible. |
6e2a9270 VP |
2413 | |
2414 | This differs from VAR->type in that VAR->type is always | |
2415 | the true type of the expession in the source language. | |
2416 | The return value of this function is the type we're | |
2417 | actually storing in varobj, and using for displaying | |
2418 | the values and for comparing previous and new values. | |
2419 | ||
2420 | For example, top-level references are always stripped. */ | |
2421 | static struct type * | |
2422 | get_value_type (struct varobj *var) | |
2423 | { | |
2424 | struct type *type; | |
2425 | ||
2426 | if (var->value) | |
2427 | type = value_type (var->value); | |
2428 | else | |
2429 | type = var->type; | |
2430 | ||
2431 | type = check_typedef (type); | |
2432 | ||
2433 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
2434 | type = get_target_type (type); | |
2435 | ||
2436 | type = check_typedef (type); | |
2437 | ||
2438 | return type; | |
2439 | } | |
2440 | ||
8b93c638 | 2441 | /* This returns the target type (or NULL) of TYPE, also skipping |
94b66fa7 KS |
2442 | past typedefs, just like get_type (). |
2443 | ||
2444 | NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file | |
581e13c1 | 2445 | except within get_target_type and get_type. */ |
8b93c638 | 2446 | static struct type * |
fba45db2 | 2447 | get_target_type (struct type *type) |
8b93c638 JM |
2448 | { |
2449 | if (type != NULL) | |
2450 | { | |
2451 | type = TYPE_TARGET_TYPE (type); | |
6766a268 DJ |
2452 | if (type != NULL) |
2453 | type = check_typedef (type); | |
8b93c638 JM |
2454 | } |
2455 | ||
2456 | return type; | |
2457 | } | |
2458 | ||
2459 | /* What is the default display for this variable? We assume that | |
581e13c1 | 2460 | everything is "natural". Any exceptions? */ |
8b93c638 | 2461 | static enum varobj_display_formats |
fba45db2 | 2462 | variable_default_display (struct varobj *var) |
8b93c638 JM |
2463 | { |
2464 | return FORMAT_NATURAL; | |
2465 | } | |
2466 | ||
581e13c1 | 2467 | /* FIXME: The following should be generic for any pointer. */ |
8b93c638 | 2468 | static void |
fba45db2 | 2469 | cppush (struct cpstack **pstack, char *name) |
8b93c638 JM |
2470 | { |
2471 | struct cpstack *s; | |
2472 | ||
2473 | s = (struct cpstack *) xmalloc (sizeof (struct cpstack)); | |
2474 | s->name = name; | |
2475 | s->next = *pstack; | |
2476 | *pstack = s; | |
2477 | } | |
2478 | ||
581e13c1 | 2479 | /* FIXME: The following should be generic for any pointer. */ |
8b93c638 | 2480 | static char * |
fba45db2 | 2481 | cppop (struct cpstack **pstack) |
8b93c638 JM |
2482 | { |
2483 | struct cpstack *s; | |
2484 | char *v; | |
2485 | ||
2486 | if ((*pstack)->name == NULL && (*pstack)->next == NULL) | |
2487 | return NULL; | |
2488 | ||
2489 | s = *pstack; | |
2490 | v = s->name; | |
2491 | *pstack = (*pstack)->next; | |
b8c9b27d | 2492 | xfree (s); |
8b93c638 JM |
2493 | |
2494 | return v; | |
2495 | } | |
2496 | \f | |
2497 | /* | |
2498 | * Language-dependencies | |
2499 | */ | |
2500 | ||
2501 | /* Common entry points */ | |
2502 | ||
581e13c1 | 2503 | /* Get the language of variable VAR. */ |
8b93c638 | 2504 | static enum varobj_languages |
fba45db2 | 2505 | variable_language (struct varobj *var) |
8b93c638 JM |
2506 | { |
2507 | enum varobj_languages lang; | |
2508 | ||
2509 | switch (var->root->exp->language_defn->la_language) | |
2510 | { | |
2511 | default: | |
2512 | case language_c: | |
2513 | lang = vlang_c; | |
2514 | break; | |
2515 | case language_cplus: | |
2516 | lang = vlang_cplus; | |
2517 | break; | |
2518 | case language_java: | |
2519 | lang = vlang_java; | |
2520 | break; | |
40591b7d JCD |
2521 | case language_ada: |
2522 | lang = vlang_ada; | |
2523 | break; | |
8b93c638 JM |
2524 | } |
2525 | ||
2526 | return lang; | |
2527 | } | |
2528 | ||
2529 | /* Return the number of children for a given variable. | |
2530 | The result of this function is defined by the language | |
581e13c1 | 2531 | implementation. The number of children returned by this function |
8b93c638 | 2532 | is the number of children that the user will see in the variable |
581e13c1 | 2533 | display. */ |
8b93c638 | 2534 | static int |
fba45db2 | 2535 | number_of_children (struct varobj *var) |
8b93c638 | 2536 | { |
82ae4854 | 2537 | return (*var->root->lang->number_of_children) (var); |
8b93c638 JM |
2538 | } |
2539 | ||
3e43a32a | 2540 | /* What is the expression for the root varobj VAR? Returns a malloc'd |
581e13c1 | 2541 | string. */ |
8b93c638 | 2542 | static char * |
fba45db2 | 2543 | name_of_variable (struct varobj *var) |
8b93c638 JM |
2544 | { |
2545 | return (*var->root->lang->name_of_variable) (var); | |
2546 | } | |
2547 | ||
3e43a32a | 2548 | /* What is the name of the INDEX'th child of VAR? Returns a malloc'd |
581e13c1 | 2549 | string. */ |
8b93c638 | 2550 | static char * |
fba45db2 | 2551 | name_of_child (struct varobj *var, int index) |
8b93c638 JM |
2552 | { |
2553 | return (*var->root->lang->name_of_child) (var, index); | |
2554 | } | |
2555 | ||
a5defcdc VP |
2556 | /* What is the ``struct value *'' of the root variable VAR? |
2557 | For floating variable object, evaluation can get us a value | |
2558 | of different type from what is stored in varobj already. In | |
2559 | that case: | |
2560 | - *type_changed will be set to 1 | |
2561 | - old varobj will be freed, and new one will be | |
2562 | created, with the same name. | |
2563 | - *var_handle will be set to the new varobj | |
2564 | Otherwise, *type_changed will be set to 0. */ | |
30b28db1 | 2565 | static struct value * |
fba45db2 | 2566 | value_of_root (struct varobj **var_handle, int *type_changed) |
8b93c638 | 2567 | { |
73a93a32 JI |
2568 | struct varobj *var; |
2569 | ||
2570 | if (var_handle == NULL) | |
2571 | return NULL; | |
2572 | ||
2573 | var = *var_handle; | |
2574 | ||
2575 | /* This should really be an exception, since this should | |
581e13c1 | 2576 | only get called with a root variable. */ |
73a93a32 | 2577 | |
b2c2bd75 | 2578 | if (!is_root_p (var)) |
73a93a32 JI |
2579 | return NULL; |
2580 | ||
a5defcdc | 2581 | if (var->root->floating) |
73a93a32 JI |
2582 | { |
2583 | struct varobj *tmp_var; | |
2584 | char *old_type, *new_type; | |
6225abfa | 2585 | |
73a93a32 JI |
2586 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, |
2587 | USE_SELECTED_FRAME); | |
2588 | if (tmp_var == NULL) | |
2589 | { | |
2590 | return NULL; | |
2591 | } | |
6225abfa | 2592 | old_type = varobj_get_type (var); |
73a93a32 | 2593 | new_type = varobj_get_type (tmp_var); |
72330bd6 | 2594 | if (strcmp (old_type, new_type) == 0) |
73a93a32 | 2595 | { |
fcacd99f VP |
2596 | /* The expression presently stored inside var->root->exp |
2597 | remembers the locations of local variables relatively to | |
2598 | the frame where the expression was created (in DWARF location | |
2599 | button, for example). Naturally, those locations are not | |
2600 | correct in other frames, so update the expression. */ | |
2601 | ||
2602 | struct expression *tmp_exp = var->root->exp; | |
a109c7c1 | 2603 | |
fcacd99f VP |
2604 | var->root->exp = tmp_var->root->exp; |
2605 | tmp_var->root->exp = tmp_exp; | |
2606 | ||
73a93a32 JI |
2607 | varobj_delete (tmp_var, NULL, 0); |
2608 | *type_changed = 0; | |
2609 | } | |
2610 | else | |
2611 | { | |
1b36a34b | 2612 | tmp_var->obj_name = xstrdup (var->obj_name); |
0cc7d26f TT |
2613 | tmp_var->from = var->from; |
2614 | tmp_var->to = var->to; | |
a5defcdc VP |
2615 | varobj_delete (var, NULL, 0); |
2616 | ||
73a93a32 JI |
2617 | install_variable (tmp_var); |
2618 | *var_handle = tmp_var; | |
705da579 | 2619 | var = *var_handle; |
73a93a32 JI |
2620 | *type_changed = 1; |
2621 | } | |
74dddad3 MS |
2622 | xfree (old_type); |
2623 | xfree (new_type); | |
73a93a32 JI |
2624 | } |
2625 | else | |
2626 | { | |
2627 | *type_changed = 0; | |
2628 | } | |
2629 | ||
2630 | return (*var->root->lang->value_of_root) (var_handle); | |
8b93c638 JM |
2631 | } |
2632 | ||
581e13c1 | 2633 | /* What is the ``struct value *'' for the INDEX'th child of PARENT? */ |
30b28db1 | 2634 | static struct value * |
fba45db2 | 2635 | value_of_child (struct varobj *parent, int index) |
8b93c638 | 2636 | { |
30b28db1 | 2637 | struct value *value; |
8b93c638 JM |
2638 | |
2639 | value = (*parent->root->lang->value_of_child) (parent, index); | |
2640 | ||
8b93c638 JM |
2641 | return value; |
2642 | } | |
2643 | ||
581e13c1 | 2644 | /* GDB already has a command called "value_of_variable". Sigh. */ |
8b93c638 | 2645 | static char * |
de051565 | 2646 | my_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 2647 | { |
8756216b | 2648 | if (var->root->is_valid) |
0cc7d26f TT |
2649 | { |
2650 | if (var->pretty_printer) | |
2651 | return value_get_print_value (var->value, var->format, var); | |
2652 | return (*var->root->lang->value_of_variable) (var, format); | |
2653 | } | |
8756216b DP |
2654 | else |
2655 | return NULL; | |
8b93c638 JM |
2656 | } |
2657 | ||
85265413 | 2658 | static char * |
b6313243 | 2659 | value_get_print_value (struct value *value, enum varobj_display_formats format, |
d452c4bc | 2660 | struct varobj *var) |
85265413 | 2661 | { |
57e66780 | 2662 | struct ui_file *stb; |
621c8364 | 2663 | struct cleanup *old_chain; |
fbb8f299 | 2664 | gdb_byte *thevalue = NULL; |
79a45b7d | 2665 | struct value_print_options opts; |
be759fcf PM |
2666 | struct type *type = NULL; |
2667 | long len = 0; | |
2668 | char *encoding = NULL; | |
2669 | struct gdbarch *gdbarch = NULL; | |
3a182a69 JK |
2670 | /* Initialize it just to avoid a GCC false warning. */ |
2671 | CORE_ADDR str_addr = 0; | |
09ca9e2e | 2672 | int string_print = 0; |
57e66780 DJ |
2673 | |
2674 | if (value == NULL) | |
2675 | return NULL; | |
2676 | ||
621c8364 TT |
2677 | stb = mem_fileopen (); |
2678 | old_chain = make_cleanup_ui_file_delete (stb); | |
2679 | ||
be759fcf | 2680 | gdbarch = get_type_arch (value_type (value)); |
b6313243 TT |
2681 | #if HAVE_PYTHON |
2682 | { | |
d452c4bc UW |
2683 | PyObject *value_formatter = var->pretty_printer; |
2684 | ||
09ca9e2e TT |
2685 | varobj_ensure_python_env (var); |
2686 | ||
0cc7d26f | 2687 | if (value_formatter) |
b6313243 | 2688 | { |
0cc7d26f TT |
2689 | /* First check to see if we have any children at all. If so, |
2690 | we simply return {...}. */ | |
2691 | if (dynamic_varobj_has_child_method (var)) | |
621c8364 TT |
2692 | { |
2693 | do_cleanups (old_chain); | |
2694 | return xstrdup ("{...}"); | |
2695 | } | |
b6313243 | 2696 | |
0cc7d26f | 2697 | if (PyObject_HasAttr (value_formatter, gdbpy_to_string_cst)) |
b6313243 | 2698 | { |
0cc7d26f | 2699 | struct value *replacement; |
0cc7d26f TT |
2700 | PyObject *output = NULL; |
2701 | ||
0cc7d26f | 2702 | output = apply_varobj_pretty_printer (value_formatter, |
621c8364 TT |
2703 | &replacement, |
2704 | stb); | |
00bd41d6 PM |
2705 | |
2706 | /* If we have string like output ... */ | |
0cc7d26f TT |
2707 | if (output) |
2708 | { | |
09ca9e2e TT |
2709 | make_cleanup_py_decref (output); |
2710 | ||
00bd41d6 PM |
2711 | /* If this is a lazy string, extract it. For lazy |
2712 | strings we always print as a string, so set | |
2713 | string_print. */ | |
be759fcf | 2714 | if (gdbpy_is_lazy_string (output)) |
0cc7d26f | 2715 | { |
09ca9e2e TT |
2716 | gdbpy_extract_lazy_string (output, &str_addr, &type, |
2717 | &len, &encoding); | |
2718 | make_cleanup (free_current_contents, &encoding); | |
be759fcf PM |
2719 | string_print = 1; |
2720 | } | |
2721 | else | |
2722 | { | |
00bd41d6 PM |
2723 | /* If it is a regular (non-lazy) string, extract |
2724 | it and copy the contents into THEVALUE. If the | |
2725 | hint says to print it as a string, set | |
2726 | string_print. Otherwise just return the extracted | |
2727 | string as a value. */ | |
2728 | ||
be759fcf PM |
2729 | PyObject *py_str |
2730 | = python_string_to_target_python_string (output); | |
a109c7c1 | 2731 | |
be759fcf PM |
2732 | if (py_str) |
2733 | { | |
2734 | char *s = PyString_AsString (py_str); | |
00bd41d6 PM |
2735 | char *hint; |
2736 | ||
2737 | hint = gdbpy_get_display_hint (value_formatter); | |
2738 | if (hint) | |
2739 | { | |
2740 | if (!strcmp (hint, "string")) | |
2741 | string_print = 1; | |
2742 | xfree (hint); | |
2743 | } | |
a109c7c1 | 2744 | |
be759fcf PM |
2745 | len = PyString_Size (py_str); |
2746 | thevalue = xmemdup (s, len + 1, len + 1); | |
2747 | type = builtin_type (gdbarch)->builtin_char; | |
2748 | Py_DECREF (py_str); | |
09ca9e2e TT |
2749 | |
2750 | if (!string_print) | |
2751 | { | |
2752 | do_cleanups (old_chain); | |
2753 | return thevalue; | |
2754 | } | |
2755 | ||
2756 | make_cleanup (xfree, thevalue); | |
be759fcf | 2757 | } |
8dc78533 JK |
2758 | else |
2759 | gdbpy_print_stack (); | |
0cc7d26f | 2760 | } |
0cc7d26f | 2761 | } |
00bd41d6 PM |
2762 | /* If the printer returned a replacement value, set VALUE |
2763 | to REPLACEMENT. If there is not a replacement value, | |
2764 | just use the value passed to this function. */ | |
0cc7d26f TT |
2765 | if (replacement) |
2766 | value = replacement; | |
b6313243 | 2767 | } |
b6313243 | 2768 | } |
b6313243 TT |
2769 | } |
2770 | #endif | |
2771 | ||
79a45b7d TT |
2772 | get_formatted_print_options (&opts, format_code[(int) format]); |
2773 | opts.deref_ref = 0; | |
b6313243 | 2774 | opts.raw = 1; |
00bd41d6 PM |
2775 | |
2776 | /* If the THEVALUE has contents, it is a regular string. */ | |
b6313243 | 2777 | if (thevalue) |
09ca9e2e TT |
2778 | LA_PRINT_STRING (stb, type, thevalue, len, encoding, 0, &opts); |
2779 | else if (string_print) | |
00bd41d6 PM |
2780 | /* Otherwise, if string_print is set, and it is not a regular |
2781 | string, it is a lazy string. */ | |
09ca9e2e | 2782 | val_print_string (type, encoding, str_addr, len, stb, &opts); |
b6313243 | 2783 | else |
00bd41d6 | 2784 | /* All other cases. */ |
b6313243 | 2785 | common_val_print (value, stb, 0, &opts, current_language); |
00bd41d6 | 2786 | |
759ef836 | 2787 | thevalue = ui_file_xstrdup (stb, NULL); |
57e66780 | 2788 | |
85265413 NR |
2789 | do_cleanups (old_chain); |
2790 | return thevalue; | |
2791 | } | |
2792 | ||
340a7723 NR |
2793 | int |
2794 | varobj_editable_p (struct varobj *var) | |
2795 | { | |
2796 | struct type *type; | |
340a7723 NR |
2797 | |
2798 | if (!(var->root->is_valid && var->value && VALUE_LVAL (var->value))) | |
2799 | return 0; | |
2800 | ||
2801 | type = get_value_type (var); | |
2802 | ||
2803 | switch (TYPE_CODE (type)) | |
2804 | { | |
2805 | case TYPE_CODE_STRUCT: | |
2806 | case TYPE_CODE_UNION: | |
2807 | case TYPE_CODE_ARRAY: | |
2808 | case TYPE_CODE_FUNC: | |
2809 | case TYPE_CODE_METHOD: | |
2810 | return 0; | |
2811 | break; | |
2812 | ||
2813 | default: | |
2814 | return 1; | |
2815 | break; | |
2816 | } | |
2817 | } | |
2818 | ||
acd65feb VP |
2819 | /* Return non-zero if changes in value of VAR |
2820 | must be detected and reported by -var-update. | |
2821 | Return zero is -var-update should never report | |
2822 | changes of such values. This makes sense for structures | |
2823 | (since the changes in children values will be reported separately), | |
2824 | or for artifical objects (like 'public' pseudo-field in C++). | |
2825 | ||
2826 | Return value of 0 means that gdb need not call value_fetch_lazy | |
2827 | for the value of this variable object. */ | |
8b93c638 | 2828 | static int |
b2c2bd75 | 2829 | varobj_value_is_changeable_p (struct varobj *var) |
8b93c638 JM |
2830 | { |
2831 | int r; | |
2832 | struct type *type; | |
2833 | ||
2834 | if (CPLUS_FAKE_CHILD (var)) | |
2835 | return 0; | |
2836 | ||
6e2a9270 | 2837 | type = get_value_type (var); |
8b93c638 JM |
2838 | |
2839 | switch (TYPE_CODE (type)) | |
2840 | { | |
72330bd6 AC |
2841 | case TYPE_CODE_STRUCT: |
2842 | case TYPE_CODE_UNION: | |
2843 | case TYPE_CODE_ARRAY: | |
2844 | r = 0; | |
2845 | break; | |
8b93c638 | 2846 | |
72330bd6 AC |
2847 | default: |
2848 | r = 1; | |
8b93c638 JM |
2849 | } |
2850 | ||
2851 | return r; | |
2852 | } | |
2853 | ||
5a413362 VP |
2854 | /* Return 1 if that varobj is floating, that is is always evaluated in the |
2855 | selected frame, and not bound to thread/frame. Such variable objects | |
2856 | are created using '@' as frame specifier to -var-create. */ | |
2857 | int | |
2858 | varobj_floating_p (struct varobj *var) | |
2859 | { | |
2860 | return var->root->floating; | |
2861 | } | |
2862 | ||
2024f65a VP |
2863 | /* Given the value and the type of a variable object, |
2864 | adjust the value and type to those necessary | |
2865 | for getting children of the variable object. | |
2866 | This includes dereferencing top-level references | |
2867 | to all types and dereferencing pointers to | |
581e13c1 | 2868 | structures. |
2024f65a | 2869 | |
581e13c1 | 2870 | Both TYPE and *TYPE should be non-null. VALUE |
2024f65a VP |
2871 | can be null if we want to only translate type. |
2872 | *VALUE can be null as well -- if the parent | |
581e13c1 | 2873 | value is not known. |
02142340 VP |
2874 | |
2875 | If WAS_PTR is not NULL, set *WAS_PTR to 0 or 1 | |
b6313243 | 2876 | depending on whether pointer was dereferenced |
02142340 | 2877 | in this function. */ |
2024f65a VP |
2878 | static void |
2879 | adjust_value_for_child_access (struct value **value, | |
02142340 VP |
2880 | struct type **type, |
2881 | int *was_ptr) | |
2024f65a VP |
2882 | { |
2883 | gdb_assert (type && *type); | |
2884 | ||
02142340 VP |
2885 | if (was_ptr) |
2886 | *was_ptr = 0; | |
2887 | ||
2024f65a VP |
2888 | *type = check_typedef (*type); |
2889 | ||
2890 | /* The type of value stored in varobj, that is passed | |
2891 | to us, is already supposed to be | |
2892 | reference-stripped. */ | |
2893 | ||
2894 | gdb_assert (TYPE_CODE (*type) != TYPE_CODE_REF); | |
2895 | ||
2896 | /* Pointers to structures are treated just like | |
2897 | structures when accessing children. Don't | |
2898 | dererences pointers to other types. */ | |
2899 | if (TYPE_CODE (*type) == TYPE_CODE_PTR) | |
2900 | { | |
2901 | struct type *target_type = get_target_type (*type); | |
2902 | if (TYPE_CODE (target_type) == TYPE_CODE_STRUCT | |
2903 | || TYPE_CODE (target_type) == TYPE_CODE_UNION) | |
2904 | { | |
2905 | if (value && *value) | |
3f4178d6 | 2906 | { |
8e7b59a5 | 2907 | volatile struct gdb_exception except; |
a109c7c1 | 2908 | |
8e7b59a5 KS |
2909 | TRY_CATCH (except, RETURN_MASK_ERROR) |
2910 | { | |
2911 | *value = value_ind (*value); | |
2912 | } | |
2913 | ||
2914 | if (except.reason < 0) | |
3f4178d6 DJ |
2915 | *value = NULL; |
2916 | } | |
2024f65a | 2917 | *type = target_type; |
02142340 VP |
2918 | if (was_ptr) |
2919 | *was_ptr = 1; | |
2024f65a VP |
2920 | } |
2921 | } | |
2922 | ||
2923 | /* The 'get_target_type' function calls check_typedef on | |
2924 | result, so we can immediately check type code. No | |
2925 | need to call check_typedef here. */ | |
2926 | } | |
2927 | ||
8b93c638 JM |
2928 | /* C */ |
2929 | static int | |
fba45db2 | 2930 | c_number_of_children (struct varobj *var) |
8b93c638 | 2931 | { |
2024f65a VP |
2932 | struct type *type = get_value_type (var); |
2933 | int children = 0; | |
8b93c638 | 2934 | struct type *target; |
8b93c638 | 2935 | |
02142340 | 2936 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 | 2937 | target = get_target_type (type); |
8b93c638 JM |
2938 | |
2939 | switch (TYPE_CODE (type)) | |
2940 | { | |
2941 | case TYPE_CODE_ARRAY: | |
2942 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0 | |
d78df370 | 2943 | && !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)) |
8b93c638 JM |
2944 | children = TYPE_LENGTH (type) / TYPE_LENGTH (target); |
2945 | else | |
74a44383 DJ |
2946 | /* If we don't know how many elements there are, don't display |
2947 | any. */ | |
2948 | children = 0; | |
8b93c638 JM |
2949 | break; |
2950 | ||
2951 | case TYPE_CODE_STRUCT: | |
2952 | case TYPE_CODE_UNION: | |
2953 | children = TYPE_NFIELDS (type); | |
2954 | break; | |
2955 | ||
2956 | case TYPE_CODE_PTR: | |
581e13c1 | 2957 | /* The type here is a pointer to non-struct. Typically, pointers |
2024f65a VP |
2958 | have one child, except for function ptrs, which have no children, |
2959 | and except for void*, as we don't know what to show. | |
2960 | ||
0755e6c1 FN |
2961 | We can show char* so we allow it to be dereferenced. If you decide |
2962 | to test for it, please mind that a little magic is necessary to | |
2963 | properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and | |
581e13c1 | 2964 | TYPE_NAME == "char". */ |
2024f65a VP |
2965 | if (TYPE_CODE (target) == TYPE_CODE_FUNC |
2966 | || TYPE_CODE (target) == TYPE_CODE_VOID) | |
2967 | children = 0; | |
2968 | else | |
2969 | children = 1; | |
8b93c638 JM |
2970 | break; |
2971 | ||
2972 | default: | |
581e13c1 | 2973 | /* Other types have no children. */ |
8b93c638 JM |
2974 | break; |
2975 | } | |
2976 | ||
2977 | return children; | |
2978 | } | |
2979 | ||
2980 | static char * | |
fba45db2 | 2981 | c_name_of_variable (struct varobj *parent) |
8b93c638 | 2982 | { |
1b36a34b | 2983 | return xstrdup (parent->name); |
8b93c638 JM |
2984 | } |
2985 | ||
bbec2603 VP |
2986 | /* Return the value of element TYPE_INDEX of a structure |
2987 | value VALUE. VALUE's type should be a structure, | |
581e13c1 | 2988 | or union, or a typedef to struct/union. |
bbec2603 VP |
2989 | |
2990 | Returns NULL if getting the value fails. Never throws. */ | |
2991 | static struct value * | |
2992 | value_struct_element_index (struct value *value, int type_index) | |
8b93c638 | 2993 | { |
bbec2603 VP |
2994 | struct value *result = NULL; |
2995 | volatile struct gdb_exception e; | |
bbec2603 | 2996 | struct type *type = value_type (value); |
a109c7c1 | 2997 | |
bbec2603 VP |
2998 | type = check_typedef (type); |
2999 | ||
3000 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3001 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
8b93c638 | 3002 | |
bbec2603 VP |
3003 | TRY_CATCH (e, RETURN_MASK_ERROR) |
3004 | { | |
d6a843b5 | 3005 | if (field_is_static (&TYPE_FIELD (type, type_index))) |
bbec2603 VP |
3006 | result = value_static_field (type, type_index); |
3007 | else | |
3008 | result = value_primitive_field (value, 0, type_index, type); | |
3009 | } | |
3010 | if (e.reason < 0) | |
3011 | { | |
3012 | return NULL; | |
3013 | } | |
3014 | else | |
3015 | { | |
3016 | return result; | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | /* Obtain the information about child INDEX of the variable | |
581e13c1 | 3021 | object PARENT. |
bbec2603 VP |
3022 | If CNAME is not null, sets *CNAME to the name of the child relative |
3023 | to the parent. | |
3024 | If CVALUE is not null, sets *CVALUE to the value of the child. | |
3025 | If CTYPE is not null, sets *CTYPE to the type of the child. | |
3026 | ||
3027 | If any of CNAME, CVALUE, or CTYPE is not null, but the corresponding | |
3028 | information cannot be determined, set *CNAME, *CVALUE, or *CTYPE | |
3029 | to NULL. */ | |
3030 | static void | |
3031 | c_describe_child (struct varobj *parent, int index, | |
02142340 VP |
3032 | char **cname, struct value **cvalue, struct type **ctype, |
3033 | char **cfull_expression) | |
bbec2603 VP |
3034 | { |
3035 | struct value *value = parent->value; | |
2024f65a | 3036 | struct type *type = get_value_type (parent); |
02142340 VP |
3037 | char *parent_expression = NULL; |
3038 | int was_ptr; | |
8e7b59a5 | 3039 | volatile struct gdb_exception except; |
bbec2603 VP |
3040 | |
3041 | if (cname) | |
3042 | *cname = NULL; | |
3043 | if (cvalue) | |
3044 | *cvalue = NULL; | |
3045 | if (ctype) | |
3046 | *ctype = NULL; | |
02142340 VP |
3047 | if (cfull_expression) |
3048 | { | |
3049 | *cfull_expression = NULL; | |
85254831 | 3050 | parent_expression = varobj_get_path_expr (get_path_expr_parent (parent)); |
02142340 VP |
3051 | } |
3052 | adjust_value_for_child_access (&value, &type, &was_ptr); | |
bbec2603 | 3053 | |
8b93c638 JM |
3054 | switch (TYPE_CODE (type)) |
3055 | { | |
3056 | case TYPE_CODE_ARRAY: | |
bbec2603 | 3057 | if (cname) |
3e43a32a MS |
3058 | *cname |
3059 | = xstrdup (int_string (index | |
3060 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), | |
3061 | 10, 1, 0, 0)); | |
bbec2603 VP |
3062 | |
3063 | if (cvalue && value) | |
3064 | { | |
3065 | int real_index = index + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)); | |
a109c7c1 | 3066 | |
8e7b59a5 KS |
3067 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3068 | { | |
3069 | *cvalue = value_subscript (value, real_index); | |
3070 | } | |
bbec2603 VP |
3071 | } |
3072 | ||
3073 | if (ctype) | |
3074 | *ctype = get_target_type (type); | |
3075 | ||
02142340 | 3076 | if (cfull_expression) |
43bbcdc2 PH |
3077 | *cfull_expression = |
3078 | xstrprintf ("(%s)[%s]", parent_expression, | |
3079 | int_string (index | |
3080 | + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), | |
3081 | 10, 1, 0, 0)); | |
02142340 VP |
3082 | |
3083 | ||
8b93c638 JM |
3084 | break; |
3085 | ||
3086 | case TYPE_CODE_STRUCT: | |
3087 | case TYPE_CODE_UNION: | |
85254831 | 3088 | { |
0d5cff50 | 3089 | const char *field_name; |
bbec2603 | 3090 | |
85254831 KS |
3091 | /* If the type is anonymous and the field has no name, |
3092 | set an appropriate name. */ | |
3093 | field_name = TYPE_FIELD_NAME (type, index); | |
3094 | if (field_name == NULL || *field_name == '\0') | |
3095 | { | |
3096 | if (cname) | |
3097 | { | |
3098 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, index)) | |
3099 | == TYPE_CODE_STRUCT) | |
3100 | *cname = xstrdup (ANONYMOUS_STRUCT_NAME); | |
3101 | else | |
3102 | *cname = xstrdup (ANONYMOUS_UNION_NAME); | |
3103 | } | |
bbec2603 | 3104 | |
85254831 KS |
3105 | if (cfull_expression) |
3106 | *cfull_expression = xstrdup (""); | |
3107 | } | |
3108 | else | |
3109 | { | |
3110 | if (cname) | |
3111 | *cname = xstrdup (field_name); | |
bbec2603 | 3112 | |
85254831 KS |
3113 | if (cfull_expression) |
3114 | { | |
3115 | char *join = was_ptr ? "->" : "."; | |
a109c7c1 | 3116 | |
85254831 KS |
3117 | *cfull_expression = xstrprintf ("(%s)%s%s", parent_expression, |
3118 | join, field_name); | |
3119 | } | |
3120 | } | |
02142340 | 3121 | |
85254831 KS |
3122 | if (cvalue && value) |
3123 | { | |
3124 | /* For C, varobj index is the same as type index. */ | |
3125 | *cvalue = value_struct_element_index (value, index); | |
3126 | } | |
3127 | ||
3128 | if (ctype) | |
3129 | *ctype = TYPE_FIELD_TYPE (type, index); | |
3130 | } | |
8b93c638 JM |
3131 | break; |
3132 | ||
3133 | case TYPE_CODE_PTR: | |
bbec2603 VP |
3134 | if (cname) |
3135 | *cname = xstrprintf ("*%s", parent->name); | |
8b93c638 | 3136 | |
bbec2603 | 3137 | if (cvalue && value) |
3f4178d6 | 3138 | { |
8e7b59a5 KS |
3139 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3140 | { | |
3141 | *cvalue = value_ind (value); | |
3142 | } | |
a109c7c1 | 3143 | |
8e7b59a5 | 3144 | if (except.reason < 0) |
3f4178d6 DJ |
3145 | *cvalue = NULL; |
3146 | } | |
bbec2603 | 3147 | |
2024f65a VP |
3148 | /* Don't use get_target_type because it calls |
3149 | check_typedef and here, we want to show the true | |
3150 | declared type of the variable. */ | |
bbec2603 | 3151 | if (ctype) |
2024f65a | 3152 | *ctype = TYPE_TARGET_TYPE (type); |
02142340 VP |
3153 | |
3154 | if (cfull_expression) | |
3155 | *cfull_expression = xstrprintf ("*(%s)", parent_expression); | |
bbec2603 | 3156 | |
8b93c638 JM |
3157 | break; |
3158 | ||
3159 | default: | |
581e13c1 | 3160 | /* This should not happen. */ |
bbec2603 VP |
3161 | if (cname) |
3162 | *cname = xstrdup ("???"); | |
02142340 VP |
3163 | if (cfull_expression) |
3164 | *cfull_expression = xstrdup ("???"); | |
581e13c1 | 3165 | /* Don't set value and type, we don't know then. */ |
8b93c638 | 3166 | } |
bbec2603 | 3167 | } |
8b93c638 | 3168 | |
bbec2603 VP |
3169 | static char * |
3170 | c_name_of_child (struct varobj *parent, int index) | |
3171 | { | |
3172 | char *name; | |
a109c7c1 | 3173 | |
02142340 | 3174 | c_describe_child (parent, index, &name, NULL, NULL, NULL); |
8b93c638 JM |
3175 | return name; |
3176 | } | |
3177 | ||
02142340 VP |
3178 | static char * |
3179 | c_path_expr_of_child (struct varobj *child) | |
3180 | { | |
3181 | c_describe_child (child->parent, child->index, NULL, NULL, NULL, | |
3182 | &child->path_expr); | |
3183 | return child->path_expr; | |
3184 | } | |
3185 | ||
c5b48eac VP |
3186 | /* If frame associated with VAR can be found, switch |
3187 | to it and return 1. Otherwise, return 0. */ | |
3188 | static int | |
3189 | check_scope (struct varobj *var) | |
3190 | { | |
3191 | struct frame_info *fi; | |
3192 | int scope; | |
3193 | ||
3194 | fi = frame_find_by_id (var->root->frame); | |
3195 | scope = fi != NULL; | |
3196 | ||
3197 | if (fi) | |
3198 | { | |
3199 | CORE_ADDR pc = get_frame_pc (fi); | |
a109c7c1 | 3200 | |
c5b48eac VP |
3201 | if (pc < BLOCK_START (var->root->valid_block) || |
3202 | pc >= BLOCK_END (var->root->valid_block)) | |
3203 | scope = 0; | |
3204 | else | |
3205 | select_frame (fi); | |
3206 | } | |
3207 | return scope; | |
3208 | } | |
3209 | ||
30b28db1 | 3210 | static struct value * |
fba45db2 | 3211 | c_value_of_root (struct varobj **var_handle) |
8b93c638 | 3212 | { |
5e572bb4 | 3213 | struct value *new_val = NULL; |
73a93a32 | 3214 | struct varobj *var = *var_handle; |
c5b48eac | 3215 | int within_scope = 0; |
6208b47d VP |
3216 | struct cleanup *back_to; |
3217 | ||
581e13c1 | 3218 | /* Only root variables can be updated... */ |
b2c2bd75 | 3219 | if (!is_root_p (var)) |
581e13c1 | 3220 | /* Not a root var. */ |
73a93a32 JI |
3221 | return NULL; |
3222 | ||
4f8d22e3 | 3223 | back_to = make_cleanup_restore_current_thread (); |
72330bd6 | 3224 | |
581e13c1 | 3225 | /* Determine whether the variable is still around. */ |
a5defcdc | 3226 | if (var->root->valid_block == NULL || var->root->floating) |
8b93c638 | 3227 | within_scope = 1; |
c5b48eac VP |
3228 | else if (var->root->thread_id == 0) |
3229 | { | |
3230 | /* The program was single-threaded when the variable object was | |
3231 | created. Technically, it's possible that the program became | |
3232 | multi-threaded since then, but we don't support such | |
3233 | scenario yet. */ | |
3234 | within_scope = check_scope (var); | |
3235 | } | |
8b93c638 JM |
3236 | else |
3237 | { | |
c5b48eac VP |
3238 | ptid_t ptid = thread_id_to_pid (var->root->thread_id); |
3239 | if (in_thread_list (ptid)) | |
d2353924 | 3240 | { |
c5b48eac VP |
3241 | switch_to_thread (ptid); |
3242 | within_scope = check_scope (var); | |
3243 | } | |
8b93c638 | 3244 | } |
72330bd6 | 3245 | |
8b93c638 JM |
3246 | if (within_scope) |
3247 | { | |
8e7b59a5 KS |
3248 | volatile struct gdb_exception except; |
3249 | ||
73a93a32 | 3250 | /* We need to catch errors here, because if evaluate |
85d93f1d | 3251 | expression fails we want to just return NULL. */ |
8e7b59a5 KS |
3252 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3253 | { | |
3254 | new_val = evaluate_expression (var->root->exp); | |
3255 | } | |
3256 | ||
8b93c638 JM |
3257 | return new_val; |
3258 | } | |
3259 | ||
6208b47d VP |
3260 | do_cleanups (back_to); |
3261 | ||
8b93c638 JM |
3262 | return NULL; |
3263 | } | |
3264 | ||
30b28db1 | 3265 | static struct value * |
fba45db2 | 3266 | c_value_of_child (struct varobj *parent, int index) |
8b93c638 | 3267 | { |
bbec2603 | 3268 | struct value *value = NULL; |
8b93c638 | 3269 | |
a109c7c1 | 3270 | c_describe_child (parent, index, NULL, &value, NULL, NULL); |
8b93c638 JM |
3271 | return value; |
3272 | } | |
3273 | ||
3274 | static struct type * | |
fba45db2 | 3275 | c_type_of_child (struct varobj *parent, int index) |
8b93c638 | 3276 | { |
bbec2603 | 3277 | struct type *type = NULL; |
a109c7c1 | 3278 | |
02142340 | 3279 | c_describe_child (parent, index, NULL, NULL, &type, NULL); |
8b93c638 JM |
3280 | return type; |
3281 | } | |
3282 | ||
8b93c638 | 3283 | static char * |
de051565 | 3284 | c_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 3285 | { |
14b3d9c9 JB |
3286 | /* BOGUS: if val_print sees a struct/class, or a reference to one, |
3287 | it will print out its children instead of "{...}". So we need to | |
3288 | catch that case explicitly. */ | |
3289 | struct type *type = get_type (var); | |
e64d9b3d | 3290 | |
581e13c1 | 3291 | /* Strip top-level references. */ |
14b3d9c9 JB |
3292 | while (TYPE_CODE (type) == TYPE_CODE_REF) |
3293 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
3294 | ||
3295 | switch (TYPE_CODE (type)) | |
8b93c638 JM |
3296 | { |
3297 | case TYPE_CODE_STRUCT: | |
3298 | case TYPE_CODE_UNION: | |
3299 | return xstrdup ("{...}"); | |
3300 | /* break; */ | |
3301 | ||
3302 | case TYPE_CODE_ARRAY: | |
3303 | { | |
e64d9b3d | 3304 | char *number; |
a109c7c1 | 3305 | |
b435e160 | 3306 | number = xstrprintf ("[%d]", var->num_children); |
e64d9b3d | 3307 | return (number); |
8b93c638 JM |
3308 | } |
3309 | /* break; */ | |
3310 | ||
3311 | default: | |
3312 | { | |
575bbeb6 KS |
3313 | if (var->value == NULL) |
3314 | { | |
3315 | /* This can happen if we attempt to get the value of a struct | |
581e13c1 MS |
3316 | member when the parent is an invalid pointer. This is an |
3317 | error condition, so we should tell the caller. */ | |
575bbeb6 KS |
3318 | return NULL; |
3319 | } | |
3320 | else | |
3321 | { | |
25d5ea92 VP |
3322 | if (var->not_fetched && value_lazy (var->value)) |
3323 | /* Frozen variable and no value yet. We don't | |
3324 | implicitly fetch the value. MI response will | |
3325 | use empty string for the value, which is OK. */ | |
3326 | return NULL; | |
3327 | ||
b2c2bd75 | 3328 | gdb_assert (varobj_value_is_changeable_p (var)); |
acd65feb | 3329 | gdb_assert (!value_lazy (var->value)); |
de051565 MK |
3330 | |
3331 | /* If the specified format is the current one, | |
581e13c1 | 3332 | we can reuse print_value. */ |
de051565 MK |
3333 | if (format == var->format) |
3334 | return xstrdup (var->print_value); | |
3335 | else | |
d452c4bc | 3336 | return value_get_print_value (var->value, format, var); |
85265413 | 3337 | } |
e64d9b3d | 3338 | } |
8b93c638 JM |
3339 | } |
3340 | } | |
3341 | \f | |
3342 | ||
3343 | /* C++ */ | |
3344 | ||
3345 | static int | |
fba45db2 | 3346 | cplus_number_of_children (struct varobj *var) |
8b93c638 JM |
3347 | { |
3348 | struct type *type; | |
3349 | int children, dont_know; | |
3350 | ||
3351 | dont_know = 1; | |
3352 | children = 0; | |
3353 | ||
3354 | if (!CPLUS_FAKE_CHILD (var)) | |
3355 | { | |
2024f65a | 3356 | type = get_value_type (var); |
02142340 | 3357 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 JM |
3358 | |
3359 | if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) || | |
72330bd6 | 3360 | ((TYPE_CODE (type)) == TYPE_CODE_UNION)) |
8b93c638 JM |
3361 | { |
3362 | int kids[3]; | |
3363 | ||
3364 | cplus_class_num_children (type, kids); | |
3365 | if (kids[v_public] != 0) | |
3366 | children++; | |
3367 | if (kids[v_private] != 0) | |
3368 | children++; | |
3369 | if (kids[v_protected] != 0) | |
3370 | children++; | |
3371 | ||
581e13c1 | 3372 | /* Add any baseclasses. */ |
8b93c638 JM |
3373 | children += TYPE_N_BASECLASSES (type); |
3374 | dont_know = 0; | |
3375 | ||
581e13c1 | 3376 | /* FIXME: save children in var. */ |
8b93c638 JM |
3377 | } |
3378 | } | |
3379 | else | |
3380 | { | |
3381 | int kids[3]; | |
3382 | ||
2024f65a | 3383 | type = get_value_type (var->parent); |
02142340 | 3384 | adjust_value_for_child_access (NULL, &type, NULL); |
8b93c638 JM |
3385 | |
3386 | cplus_class_num_children (type, kids); | |
6e382aa3 | 3387 | if (strcmp (var->name, "public") == 0) |
8b93c638 | 3388 | children = kids[v_public]; |
6e382aa3 | 3389 | else if (strcmp (var->name, "private") == 0) |
8b93c638 JM |
3390 | children = kids[v_private]; |
3391 | else | |
3392 | children = kids[v_protected]; | |
3393 | dont_know = 0; | |
3394 | } | |
3395 | ||
3396 | if (dont_know) | |
3397 | children = c_number_of_children (var); | |
3398 | ||
3399 | return children; | |
3400 | } | |
3401 | ||
3402 | /* Compute # of public, private, and protected variables in this class. | |
3403 | That means we need to descend into all baseclasses and find out | |
581e13c1 | 3404 | how many are there, too. */ |
8b93c638 | 3405 | static void |
1669605f | 3406 | cplus_class_num_children (struct type *type, int children[3]) |
8b93c638 | 3407 | { |
d48cc9dd DJ |
3408 | int i, vptr_fieldno; |
3409 | struct type *basetype = NULL; | |
8b93c638 JM |
3410 | |
3411 | children[v_public] = 0; | |
3412 | children[v_private] = 0; | |
3413 | children[v_protected] = 0; | |
3414 | ||
d48cc9dd | 3415 | vptr_fieldno = get_vptr_fieldno (type, &basetype); |
8b93c638 JM |
3416 | for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++) |
3417 | { | |
d48cc9dd DJ |
3418 | /* If we have a virtual table pointer, omit it. Even if virtual |
3419 | table pointers are not specifically marked in the debug info, | |
3420 | they should be artificial. */ | |
3421 | if ((type == basetype && i == vptr_fieldno) | |
3422 | || TYPE_FIELD_ARTIFICIAL (type, i)) | |
8b93c638 JM |
3423 | continue; |
3424 | ||
3425 | if (TYPE_FIELD_PROTECTED (type, i)) | |
3426 | children[v_protected]++; | |
3427 | else if (TYPE_FIELD_PRIVATE (type, i)) | |
3428 | children[v_private]++; | |
3429 | else | |
3430 | children[v_public]++; | |
3431 | } | |
3432 | } | |
3433 | ||
3434 | static char * | |
fba45db2 | 3435 | cplus_name_of_variable (struct varobj *parent) |
8b93c638 JM |
3436 | { |
3437 | return c_name_of_variable (parent); | |
3438 | } | |
3439 | ||
2024f65a VP |
3440 | enum accessibility { private_field, protected_field, public_field }; |
3441 | ||
3442 | /* Check if field INDEX of TYPE has the specified accessibility. | |
3443 | Return 0 if so and 1 otherwise. */ | |
3444 | static int | |
3445 | match_accessibility (struct type *type, int index, enum accessibility acc) | |
8b93c638 | 3446 | { |
2024f65a VP |
3447 | if (acc == private_field && TYPE_FIELD_PRIVATE (type, index)) |
3448 | return 1; | |
3449 | else if (acc == protected_field && TYPE_FIELD_PROTECTED (type, index)) | |
3450 | return 1; | |
3451 | else if (acc == public_field && !TYPE_FIELD_PRIVATE (type, index) | |
3452 | && !TYPE_FIELD_PROTECTED (type, index)) | |
3453 | return 1; | |
3454 | else | |
3455 | return 0; | |
3456 | } | |
3457 | ||
3458 | static void | |
3459 | cplus_describe_child (struct varobj *parent, int index, | |
02142340 VP |
3460 | char **cname, struct value **cvalue, struct type **ctype, |
3461 | char **cfull_expression) | |
2024f65a | 3462 | { |
2024f65a | 3463 | struct value *value; |
8b93c638 | 3464 | struct type *type; |
02142340 VP |
3465 | int was_ptr; |
3466 | char *parent_expression = NULL; | |
8b93c638 | 3467 | |
2024f65a VP |
3468 | if (cname) |
3469 | *cname = NULL; | |
3470 | if (cvalue) | |
3471 | *cvalue = NULL; | |
3472 | if (ctype) | |
3473 | *ctype = NULL; | |
02142340 VP |
3474 | if (cfull_expression) |
3475 | *cfull_expression = NULL; | |
2024f65a | 3476 | |
8b93c638 JM |
3477 | if (CPLUS_FAKE_CHILD (parent)) |
3478 | { | |
2024f65a VP |
3479 | value = parent->parent->value; |
3480 | type = get_value_type (parent->parent); | |
02142340 | 3481 | if (cfull_expression) |
85254831 KS |
3482 | parent_expression |
3483 | = varobj_get_path_expr (get_path_expr_parent (parent->parent)); | |
8b93c638 JM |
3484 | } |
3485 | else | |
2024f65a VP |
3486 | { |
3487 | value = parent->value; | |
3488 | type = get_value_type (parent); | |
02142340 | 3489 | if (cfull_expression) |
85254831 KS |
3490 | parent_expression |
3491 | = varobj_get_path_expr (get_path_expr_parent (parent)); | |
2024f65a | 3492 | } |
8b93c638 | 3493 | |
02142340 | 3494 | adjust_value_for_child_access (&value, &type, &was_ptr); |
2024f65a VP |
3495 | |
3496 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3f4178d6 | 3497 | || TYPE_CODE (type) == TYPE_CODE_UNION) |
8b93c638 | 3498 | { |
02142340 | 3499 | char *join = was_ptr ? "->" : "."; |
a109c7c1 | 3500 | |
8b93c638 JM |
3501 | if (CPLUS_FAKE_CHILD (parent)) |
3502 | { | |
6e382aa3 JJ |
3503 | /* The fields of the class type are ordered as they |
3504 | appear in the class. We are given an index for a | |
3505 | particular access control type ("public","protected", | |
3506 | or "private"). We must skip over fields that don't | |
3507 | have the access control we are looking for to properly | |
581e13c1 | 3508 | find the indexed field. */ |
6e382aa3 | 3509 | int type_index = TYPE_N_BASECLASSES (type); |
2024f65a | 3510 | enum accessibility acc = public_field; |
d48cc9dd DJ |
3511 | int vptr_fieldno; |
3512 | struct type *basetype = NULL; | |
0d5cff50 | 3513 | const char *field_name; |
d48cc9dd DJ |
3514 | |
3515 | vptr_fieldno = get_vptr_fieldno (type, &basetype); | |
6e382aa3 | 3516 | if (strcmp (parent->name, "private") == 0) |
2024f65a | 3517 | acc = private_field; |
6e382aa3 | 3518 | else if (strcmp (parent->name, "protected") == 0) |
2024f65a VP |
3519 | acc = protected_field; |
3520 | ||
3521 | while (index >= 0) | |
6e382aa3 | 3522 | { |
d48cc9dd DJ |
3523 | if ((type == basetype && type_index == vptr_fieldno) |
3524 | || TYPE_FIELD_ARTIFICIAL (type, type_index)) | |
2024f65a VP |
3525 | ; /* ignore vptr */ |
3526 | else if (match_accessibility (type, type_index, acc)) | |
6e382aa3 JJ |
3527 | --index; |
3528 | ++type_index; | |
6e382aa3 | 3529 | } |
2024f65a VP |
3530 | --type_index; |
3531 | ||
85254831 KS |
3532 | /* If the type is anonymous and the field has no name, |
3533 | set an appopriate name. */ | |
3534 | field_name = TYPE_FIELD_NAME (type, type_index); | |
3535 | if (field_name == NULL || *field_name == '\0') | |
3536 | { | |
3537 | if (cname) | |
3538 | { | |
3539 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, type_index)) | |
3540 | == TYPE_CODE_STRUCT) | |
3541 | *cname = xstrdup (ANONYMOUS_STRUCT_NAME); | |
3542 | else if (TYPE_CODE (TYPE_FIELD_TYPE (type, type_index)) | |
3543 | == TYPE_CODE_UNION) | |
3544 | *cname = xstrdup (ANONYMOUS_UNION_NAME); | |
3545 | } | |
3546 | ||
3547 | if (cfull_expression) | |
3548 | *cfull_expression = xstrdup (""); | |
3549 | } | |
3550 | else | |
3551 | { | |
3552 | if (cname) | |
3553 | *cname = xstrdup (TYPE_FIELD_NAME (type, type_index)); | |
3554 | ||
3555 | if (cfull_expression) | |
3556 | *cfull_expression | |
3557 | = xstrprintf ("((%s)%s%s)", parent_expression, join, | |
3558 | field_name); | |
3559 | } | |
2024f65a VP |
3560 | |
3561 | if (cvalue && value) | |
3562 | *cvalue = value_struct_element_index (value, type_index); | |
3563 | ||
3564 | if (ctype) | |
3565 | *ctype = TYPE_FIELD_TYPE (type, type_index); | |
3566 | } | |
3567 | else if (index < TYPE_N_BASECLASSES (type)) | |
3568 | { | |
3569 | /* This is a baseclass. */ | |
3570 | if (cname) | |
3571 | *cname = xstrdup (TYPE_FIELD_NAME (type, index)); | |
3572 | ||
3573 | if (cvalue && value) | |
0cc7d26f | 3574 | *cvalue = value_cast (TYPE_FIELD_TYPE (type, index), value); |
6e382aa3 | 3575 | |
2024f65a VP |
3576 | if (ctype) |
3577 | { | |
3578 | *ctype = TYPE_FIELD_TYPE (type, index); | |
3579 | } | |
02142340 VP |
3580 | |
3581 | if (cfull_expression) | |
3582 | { | |
3583 | char *ptr = was_ptr ? "*" : ""; | |
a109c7c1 | 3584 | |
581e13c1 | 3585 | /* Cast the parent to the base' type. Note that in gdb, |
02142340 VP |
3586 | expression like |
3587 | (Base1)d | |
3588 | will create an lvalue, for all appearences, so we don't | |
3589 | need to use more fancy: | |
3590 | *(Base1*)(&d) | |
0d932b2f MK |
3591 | construct. |
3592 | ||
3593 | When we are in the scope of the base class or of one | |
3594 | of its children, the type field name will be interpreted | |
3595 | as a constructor, if it exists. Therefore, we must | |
3596 | indicate that the name is a class name by using the | |
3597 | 'class' keyword. See PR mi/11912 */ | |
3598 | *cfull_expression = xstrprintf ("(%s(class %s%s) %s)", | |
02142340 VP |
3599 | ptr, |
3600 | TYPE_FIELD_NAME (type, index), | |
3601 | ptr, | |
3602 | parent_expression); | |
3603 | } | |
8b93c638 | 3604 | } |
8b93c638 JM |
3605 | else |
3606 | { | |
348144ba | 3607 | char *access = NULL; |
6e382aa3 | 3608 | int children[3]; |
a109c7c1 | 3609 | |
2024f65a | 3610 | cplus_class_num_children (type, children); |
6e382aa3 | 3611 | |
8b93c638 | 3612 | /* Everything beyond the baseclasses can |
6e382aa3 JJ |
3613 | only be "public", "private", or "protected" |
3614 | ||
3615 | The special "fake" children are always output by varobj in | |
581e13c1 | 3616 | this order. So if INDEX == 2, it MUST be "protected". */ |
8b93c638 JM |
3617 | index -= TYPE_N_BASECLASSES (type); |
3618 | switch (index) | |
3619 | { | |
3620 | case 0: | |
6e382aa3 | 3621 | if (children[v_public] > 0) |
2024f65a | 3622 | access = "public"; |
6e382aa3 | 3623 | else if (children[v_private] > 0) |
2024f65a | 3624 | access = "private"; |
6e382aa3 | 3625 | else |
2024f65a | 3626 | access = "protected"; |
6e382aa3 | 3627 | break; |
8b93c638 | 3628 | case 1: |
6e382aa3 | 3629 | if (children[v_public] > 0) |
8b93c638 | 3630 | { |
6e382aa3 | 3631 | if (children[v_private] > 0) |
2024f65a | 3632 | access = "private"; |
6e382aa3 | 3633 | else |
2024f65a | 3634 | access = "protected"; |
8b93c638 | 3635 | } |
6e382aa3 | 3636 | else if (children[v_private] > 0) |
2024f65a | 3637 | access = "protected"; |
6e382aa3 | 3638 | break; |
8b93c638 | 3639 | case 2: |
581e13c1 | 3640 | /* Must be protected. */ |
2024f65a | 3641 | access = "protected"; |
6e382aa3 | 3642 | break; |
8b93c638 | 3643 | default: |
581e13c1 | 3644 | /* error! */ |
8b93c638 JM |
3645 | break; |
3646 | } | |
348144ba MS |
3647 | |
3648 | gdb_assert (access); | |
2024f65a VP |
3649 | if (cname) |
3650 | *cname = xstrdup (access); | |
8b93c638 | 3651 | |
02142340 | 3652 | /* Value and type and full expression are null here. */ |
2024f65a | 3653 | } |
8b93c638 | 3654 | } |
8b93c638 JM |
3655 | else |
3656 | { | |
02142340 | 3657 | c_describe_child (parent, index, cname, cvalue, ctype, cfull_expression); |
2024f65a VP |
3658 | } |
3659 | } | |
8b93c638 | 3660 | |
2024f65a VP |
3661 | static char * |
3662 | cplus_name_of_child (struct varobj *parent, int index) | |
3663 | { | |
3664 | char *name = NULL; | |
a109c7c1 | 3665 | |
02142340 | 3666 | cplus_describe_child (parent, index, &name, NULL, NULL, NULL); |
8b93c638 JM |
3667 | return name; |
3668 | } | |
3669 | ||
02142340 VP |
3670 | static char * |
3671 | cplus_path_expr_of_child (struct varobj *child) | |
3672 | { | |
3673 | cplus_describe_child (child->parent, child->index, NULL, NULL, NULL, | |
3674 | &child->path_expr); | |
3675 | return child->path_expr; | |
3676 | } | |
3677 | ||
30b28db1 | 3678 | static struct value * |
fba45db2 | 3679 | cplus_value_of_root (struct varobj **var_handle) |
8b93c638 | 3680 | { |
73a93a32 | 3681 | return c_value_of_root (var_handle); |
8b93c638 JM |
3682 | } |
3683 | ||
30b28db1 | 3684 | static struct value * |
fba45db2 | 3685 | cplus_value_of_child (struct varobj *parent, int index) |
8b93c638 | 3686 | { |
2024f65a | 3687 | struct value *value = NULL; |
a109c7c1 | 3688 | |
02142340 | 3689 | cplus_describe_child (parent, index, NULL, &value, NULL, NULL); |
8b93c638 JM |
3690 | return value; |
3691 | } | |
3692 | ||
3693 | static struct type * | |
fba45db2 | 3694 | cplus_type_of_child (struct varobj *parent, int index) |
8b93c638 | 3695 | { |
2024f65a | 3696 | struct type *type = NULL; |
a109c7c1 | 3697 | |
02142340 | 3698 | cplus_describe_child (parent, index, NULL, NULL, &type, NULL); |
8b93c638 JM |
3699 | return type; |
3700 | } | |
3701 | ||
8b93c638 | 3702 | static char * |
a109c7c1 MS |
3703 | cplus_value_of_variable (struct varobj *var, |
3704 | enum varobj_display_formats format) | |
8b93c638 JM |
3705 | { |
3706 | ||
3707 | /* If we have one of our special types, don't print out | |
581e13c1 | 3708 | any value. */ |
8b93c638 JM |
3709 | if (CPLUS_FAKE_CHILD (var)) |
3710 | return xstrdup (""); | |
3711 | ||
de051565 | 3712 | return c_value_of_variable (var, format); |
8b93c638 JM |
3713 | } |
3714 | \f | |
3715 | /* Java */ | |
3716 | ||
3717 | static int | |
fba45db2 | 3718 | java_number_of_children (struct varobj *var) |
8b93c638 JM |
3719 | { |
3720 | return cplus_number_of_children (var); | |
3721 | } | |
3722 | ||
3723 | static char * | |
fba45db2 | 3724 | java_name_of_variable (struct varobj *parent) |
8b93c638 JM |
3725 | { |
3726 | char *p, *name; | |
3727 | ||
3728 | name = cplus_name_of_variable (parent); | |
3729 | /* If the name has "-" in it, it is because we | |
581e13c1 | 3730 | needed to escape periods in the name... */ |
8b93c638 JM |
3731 | p = name; |
3732 | ||
3733 | while (*p != '\000') | |
3734 | { | |
3735 | if (*p == '-') | |
3736 | *p = '.'; | |
3737 | p++; | |
3738 | } | |
3739 | ||
3740 | return name; | |
3741 | } | |
3742 | ||
3743 | static char * | |
fba45db2 | 3744 | java_name_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3745 | { |
3746 | char *name, *p; | |
3747 | ||
3748 | name = cplus_name_of_child (parent, index); | |
581e13c1 | 3749 | /* Escape any periods in the name... */ |
8b93c638 JM |
3750 | p = name; |
3751 | ||
3752 | while (*p != '\000') | |
3753 | { | |
3754 | if (*p == '.') | |
3755 | *p = '-'; | |
3756 | p++; | |
3757 | } | |
3758 | ||
3759 | return name; | |
3760 | } | |
3761 | ||
02142340 VP |
3762 | static char * |
3763 | java_path_expr_of_child (struct varobj *child) | |
3764 | { | |
3765 | return NULL; | |
3766 | } | |
3767 | ||
30b28db1 | 3768 | static struct value * |
fba45db2 | 3769 | java_value_of_root (struct varobj **var_handle) |
8b93c638 | 3770 | { |
73a93a32 | 3771 | return cplus_value_of_root (var_handle); |
8b93c638 JM |
3772 | } |
3773 | ||
30b28db1 | 3774 | static struct value * |
fba45db2 | 3775 | java_value_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3776 | { |
3777 | return cplus_value_of_child (parent, index); | |
3778 | } | |
3779 | ||
3780 | static struct type * | |
fba45db2 | 3781 | java_type_of_child (struct varobj *parent, int index) |
8b93c638 JM |
3782 | { |
3783 | return cplus_type_of_child (parent, index); | |
3784 | } | |
3785 | ||
8b93c638 | 3786 | static char * |
de051565 | 3787 | java_value_of_variable (struct varobj *var, enum varobj_display_formats format) |
8b93c638 | 3788 | { |
de051565 | 3789 | return cplus_value_of_variable (var, format); |
8b93c638 | 3790 | } |
54333c3b | 3791 | |
40591b7d JCD |
3792 | /* Ada specific callbacks for VAROBJs. */ |
3793 | ||
3794 | static int | |
3795 | ada_number_of_children (struct varobj *var) | |
3796 | { | |
3797 | return c_number_of_children (var); | |
3798 | } | |
3799 | ||
3800 | static char * | |
3801 | ada_name_of_variable (struct varobj *parent) | |
3802 | { | |
3803 | return c_name_of_variable (parent); | |
3804 | } | |
3805 | ||
3806 | static char * | |
3807 | ada_name_of_child (struct varobj *parent, int index) | |
3808 | { | |
3809 | return c_name_of_child (parent, index); | |
3810 | } | |
3811 | ||
3812 | static char* | |
3813 | ada_path_expr_of_child (struct varobj *child) | |
3814 | { | |
3815 | return c_path_expr_of_child (child); | |
3816 | } | |
3817 | ||
3818 | static struct value * | |
3819 | ada_value_of_root (struct varobj **var_handle) | |
3820 | { | |
3821 | return c_value_of_root (var_handle); | |
3822 | } | |
3823 | ||
3824 | static struct value * | |
3825 | ada_value_of_child (struct varobj *parent, int index) | |
3826 | { | |
3827 | return c_value_of_child (parent, index); | |
3828 | } | |
3829 | ||
3830 | static struct type * | |
3831 | ada_type_of_child (struct varobj *parent, int index) | |
3832 | { | |
3833 | return c_type_of_child (parent, index); | |
3834 | } | |
3835 | ||
3836 | static char * | |
3837 | ada_value_of_variable (struct varobj *var, enum varobj_display_formats format) | |
3838 | { | |
3839 | return c_value_of_variable (var, format); | |
3840 | } | |
3841 | ||
54333c3b JK |
3842 | /* Iterate all the existing _root_ VAROBJs and call the FUNC callback for them |
3843 | with an arbitrary caller supplied DATA pointer. */ | |
3844 | ||
3845 | void | |
3846 | all_root_varobjs (void (*func) (struct varobj *var, void *data), void *data) | |
3847 | { | |
3848 | struct varobj_root *var_root, *var_root_next; | |
3849 | ||
3850 | /* Iterate "safely" - handle if the callee deletes its passed VAROBJ. */ | |
3851 | ||
3852 | for (var_root = rootlist; var_root != NULL; var_root = var_root_next) | |
3853 | { | |
3854 | var_root_next = var_root->next; | |
3855 | ||
3856 | (*func) (var_root->rootvar, data); | |
3857 | } | |
3858 | } | |
8b93c638 JM |
3859 | \f |
3860 | extern void _initialize_varobj (void); | |
3861 | void | |
3862 | _initialize_varobj (void) | |
3863 | { | |
3864 | int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE; | |
3865 | ||
3866 | varobj_table = xmalloc (sizeof_table); | |
3867 | memset (varobj_table, 0, sizeof_table); | |
3868 | ||
85c07804 | 3869 | add_setshow_zinteger_cmd ("debugvarobj", class_maintenance, |
3e43a32a MS |
3870 | &varobjdebug, |
3871 | _("Set varobj debugging."), | |
3872 | _("Show varobj debugging."), | |
3873 | _("When non-zero, varobj debugging is enabled."), | |
3874 | NULL, show_varobjdebug, | |
85c07804 | 3875 | &setlist, &showlist); |
8b93c638 | 3876 | } |
8756216b | 3877 | |
54333c3b JK |
3878 | /* Invalidate varobj VAR if it is tied to locals and re-create it if it is |
3879 | defined on globals. It is a helper for varobj_invalidate. */ | |
2dbd25e5 | 3880 | |
54333c3b JK |
3881 | static void |
3882 | varobj_invalidate_iter (struct varobj *var, void *unused) | |
8756216b | 3883 | { |
54333c3b JK |
3884 | /* Floating varobjs are reparsed on each stop, so we don't care if the |
3885 | presently parsed expression refers to something that's gone. */ | |
3886 | if (var->root->floating) | |
3887 | return; | |
8756216b | 3888 | |
54333c3b JK |
3889 | /* global var must be re-evaluated. */ |
3890 | if (var->root->valid_block == NULL) | |
2dbd25e5 | 3891 | { |
54333c3b | 3892 | struct varobj *tmp_var; |
2dbd25e5 | 3893 | |
54333c3b JK |
3894 | /* Try to create a varobj with same expression. If we succeed |
3895 | replace the old varobj, otherwise invalidate it. */ | |
3896 | tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0, | |
3897 | USE_CURRENT_FRAME); | |
3898 | if (tmp_var != NULL) | |
3899 | { | |
3900 | tmp_var->obj_name = xstrdup (var->obj_name); | |
3901 | varobj_delete (var, NULL, 0); | |
3902 | install_variable (tmp_var); | |
2dbd25e5 | 3903 | } |
54333c3b JK |
3904 | else |
3905 | var->root->is_valid = 0; | |
2dbd25e5 | 3906 | } |
54333c3b JK |
3907 | else /* locals must be invalidated. */ |
3908 | var->root->is_valid = 0; | |
3909 | } | |
3910 | ||
3911 | /* Invalidate the varobjs that are tied to locals and re-create the ones that | |
3912 | are defined on globals. | |
3913 | Invalidated varobjs will be always printed in_scope="invalid". */ | |
3914 | ||
3915 | void | |
3916 | varobj_invalidate (void) | |
3917 | { | |
3918 | all_root_varobjs (varobj_invalidate_iter, NULL); | |
8756216b | 3919 | } |