1 /* Implementation of the GDB variable objects API.
2 Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
21 #include "expression.h"
30 /* Non-zero if we want to see trace of varobj level stuff. */
34 /* String representations of gdb's format codes */
35 char *varobj_format_string
[] =
36 { "natural", "binary", "decimal", "hexadecimal", "octal" };
38 /* String representations of gdb's known languages */
39 char *varobj_language_string
[] = { "unknown", "C", "C++", "Java" };
43 /* Every root variable has one of these structures saved in its
44 varobj. Members which must be free'd are noted. */
48 /* Alloc'd expression for this parent. */
49 struct expression
*exp
;
51 /* Block for which this expression is valid */
52 struct block
*valid_block
;
54 /* The frame for this expression */
55 struct frame_id frame
;
57 /* If 1, "update" always recomputes the frame & valid block
58 using the currently selected frame. */
59 int use_selected_frame
;
61 /* Language info for this variable and its children */
62 struct language_specific
*lang
;
64 /* The varobj for this root node. */
65 struct varobj
*rootvar
;
67 /* Next root variable */
68 struct varobj_root
*next
;
71 /* Every variable in the system has a structure of this type defined
72 for it. This structure holds all information necessary to manipulate
73 a particular object variable. Members which must be freed are noted. */
77 /* Alloc'd name of the variable for this object.. If this variable is a
78 child, then this name will be the child's source name.
80 /* NOTE: This is the "expression" */
83 /* The alloc'd name for this variable's object. This is here for
84 convenience when constructing this object's children. */
87 /* Index of this variable in its parent or -1 */
90 /* The type of this variable. This may NEVER be NULL. */
93 /* The value of this expression or subexpression. This may be NULL. */
96 /* Did an error occur evaluating the expression or getting its value? */
99 /* The number of (immediate) children this variable has */
102 /* If this object is a child, this points to its immediate parent. */
103 struct varobj
*parent
;
105 /* A list of this object's children */
106 struct varobj_child
*children
;
108 /* Description of the root variable. Points to root variable for children. */
109 struct varobj_root
*root
;
111 /* The format of the output for this object */
112 enum varobj_display_formats format
;
115 /* Every variable keeps a linked list of its children, described
116 by the following structure. */
117 /* FIXME: Deprecated. All should use vlist instead */
122 /* Pointer to the child's data */
123 struct varobj
*child
;
125 /* Pointer to the next child */
126 struct varobj_child
*next
;
129 /* A stack of varobjs */
130 /* FIXME: Deprecated. All should use vlist instead */
141 struct cpstack
*next
;
144 /* A list of varobjs */
152 /* Private function prototypes */
154 /* Helper functions for the above subcommands. */
156 static int delete_variable (struct cpstack
**, struct varobj
*, int);
158 static void delete_variable_1 (struct cpstack
**, int *,
159 struct varobj
*, int, int);
161 static int install_variable (struct varobj
*);
163 static void uninstall_variable (struct varobj
*);
165 static struct varobj
*child_exists (struct varobj
*, char *);
167 static struct varobj
*create_child (struct varobj
*, int, char *);
169 static void save_child_in_parent (struct varobj
*, struct varobj
*);
171 static void remove_child_from_parent (struct varobj
*, struct varobj
*);
173 /* Utility routines */
175 static struct varobj
*new_variable (void);
177 static struct varobj
*new_root_variable (void);
179 static void free_variable (struct varobj
*var
);
181 static struct cleanup
*make_cleanup_free_variable (struct varobj
*var
);
183 static struct type
*get_type (struct varobj
*var
);
185 static struct type
*get_type_deref (struct varobj
*var
);
187 static struct type
*get_target_type (struct type
*);
189 static enum varobj_display_formats
variable_default_display (struct varobj
*);
191 static int my_value_equal (struct value
*, struct value
*, int *);
193 static void vpush (struct vstack
**pstack
, struct varobj
*var
);
195 static struct varobj
*vpop (struct vstack
**pstack
);
197 static void cppush (struct cpstack
**pstack
, char *name
);
199 static char *cppop (struct cpstack
**pstack
);
201 /* Language-specific routines. */
203 static enum varobj_languages
variable_language (struct varobj
*var
);
205 static int number_of_children (struct varobj
*);
207 static char *name_of_variable (struct varobj
*);
209 static char *name_of_child (struct varobj
*, int);
211 static struct value
*value_of_root (struct varobj
**var_handle
, int *);
213 static struct value
*value_of_child (struct varobj
*parent
, int index
);
215 static struct type
*type_of_child (struct varobj
*var
);
217 static int variable_editable (struct varobj
*var
);
219 static char *my_value_of_variable (struct varobj
*var
);
221 static int type_changeable (struct varobj
*var
);
223 /* C implementation */
225 static int c_number_of_children (struct varobj
*var
);
227 static char *c_name_of_variable (struct varobj
*parent
);
229 static char *c_name_of_child (struct varobj
*parent
, int index
);
231 static struct value
*c_value_of_root (struct varobj
**var_handle
);
233 static struct value
*c_value_of_child (struct varobj
*parent
, int index
);
235 static struct type
*c_type_of_child (struct varobj
*parent
, int index
);
237 static int c_variable_editable (struct varobj
*var
);
239 static char *c_value_of_variable (struct varobj
*var
);
241 /* C++ implementation */
243 static int cplus_number_of_children (struct varobj
*var
);
245 static void cplus_class_num_children (struct type
*type
, int children
[3]);
247 static char *cplus_name_of_variable (struct varobj
*parent
);
249 static char *cplus_name_of_child (struct varobj
*parent
, int index
);
251 static struct value
*cplus_value_of_root (struct varobj
**var_handle
);
253 static struct value
*cplus_value_of_child (struct varobj
*parent
, int index
);
255 static struct type
*cplus_type_of_child (struct varobj
*parent
, int index
);
257 static int cplus_variable_editable (struct varobj
*var
);
259 static char *cplus_value_of_variable (struct varobj
*var
);
261 /* Java implementation */
263 static int java_number_of_children (struct varobj
*var
);
265 static char *java_name_of_variable (struct varobj
*parent
);
267 static char *java_name_of_child (struct varobj
*parent
, int index
);
269 static struct value
*java_value_of_root (struct varobj
**var_handle
);
271 static struct value
*java_value_of_child (struct varobj
*parent
, int index
);
273 static struct type
*java_type_of_child (struct varobj
*parent
, int index
);
275 static int java_variable_editable (struct varobj
*var
);
277 static char *java_value_of_variable (struct varobj
*var
);
279 /* The language specific vector */
281 struct language_specific
284 /* The language of this variable */
285 enum varobj_languages language
;
287 /* The number of children of PARENT. */
288 int (*number_of_children
) (struct varobj
* parent
);
290 /* The name (expression) of a root varobj. */
291 char *(*name_of_variable
) (struct varobj
* parent
);
293 /* The name of the INDEX'th child of PARENT. */
294 char *(*name_of_child
) (struct varobj
* parent
, int index
);
296 /* The ``struct value *'' of the root variable ROOT. */
297 struct value
*(*value_of_root
) (struct varobj
** root_handle
);
299 /* The ``struct value *'' of the INDEX'th child of PARENT. */
300 struct value
*(*value_of_child
) (struct varobj
* parent
, int index
);
302 /* The type of the INDEX'th child of PARENT. */
303 struct type
*(*type_of_child
) (struct varobj
* parent
, int index
);
305 /* Is VAR editable? */
306 int (*variable_editable
) (struct varobj
* var
);
308 /* The current value of VAR. */
309 char *(*value_of_variable
) (struct varobj
* var
);
312 /* Array of known source language routines. */
313 static struct language_specific
314 languages
[vlang_end
][sizeof (struct language_specific
)] = {
315 /* Unknown (try treating as C */
318 c_number_of_children
,
330 c_number_of_children
,
342 cplus_number_of_children
,
343 cplus_name_of_variable
,
346 cplus_value_of_child
,
348 cplus_variable_editable
,
349 cplus_value_of_variable
}
354 java_number_of_children
,
355 java_name_of_variable
,
360 java_variable_editable
,
361 java_value_of_variable
}
364 /* A little convenience enum for dealing with C++/Java */
367 v_public
= 0, v_private
, v_protected
372 /* Mappings of varobj_display_formats enums to gdb's format codes */
373 static int format_code
[] = { 0, 't', 'd', 'x', 'o' };
375 /* Header of the list of root variable objects */
376 static struct varobj_root
*rootlist
;
377 static int rootcount
= 0; /* number of root varobjs in the list */
379 /* Prime number indicating the number of buckets in the hash table */
380 /* A prime large enough to avoid too many colisions */
381 #define VAROBJ_TABLE_SIZE 227
383 /* Pointer to the varobj hash table (built at run time) */
384 static struct vlist
**varobj_table
;
386 /* Is the variable X one of our "fake" children? */
387 #define CPLUS_FAKE_CHILD(x) \
388 ((x) != NULL && (x)->type == NULL && (x)->value == NULL)
391 /* API Implementation */
393 /* Creates a varobj (not its children) */
396 varobj_create (char *objname
,
397 char *expression
, CORE_ADDR frame
, enum varobj_type type
)
400 struct frame_info
*fi
;
401 struct frame_info
*old_fi
= NULL
;
403 struct cleanup
*old_chain
;
405 /* Fill out a varobj structure for the (root) variable being constructed. */
406 var
= new_root_variable ();
407 old_chain
= make_cleanup_free_variable (var
);
409 if (expression
!= NULL
)
412 enum varobj_languages lang
;
414 /* Parse and evaluate the expression, filling in as much
415 of the variable's data as possible */
417 /* Allow creator to specify context of variable */
418 if ((type
== USE_CURRENT_FRAME
) || (type
== USE_SELECTED_FRAME
))
421 fi
= find_frame_addr_in_frame_chain (frame
);
423 /* frame = -2 means always use selected frame */
424 if (type
== USE_SELECTED_FRAME
)
425 var
->root
->use_selected_frame
= 1;
429 block
= get_frame_block (fi
, 0);
432 innermost_block
= NULL
;
433 /* Wrap the call to parse expression, so we can
434 return a sensible error. */
435 if (!gdb_parse_exp_1 (&p
, block
, 0, &var
->root
->exp
))
440 /* Don't allow variables to be created for types. */
441 if (var
->root
->exp
->elts
[0].opcode
== OP_TYPE
)
443 do_cleanups (old_chain
);
444 fprintf_unfiltered (gdb_stderr
,
445 "Attempt to use a type name as an expression.");
449 var
->format
= variable_default_display (var
);
450 var
->root
->valid_block
= innermost_block
;
451 var
->name
= savestring (expression
, strlen (expression
));
453 /* When the frame is different from the current frame,
454 we must select the appropriate frame before parsing
455 the expression, otherwise the value will not be current.
456 Since select_frame is so benign, just call it for all cases. */
459 get_frame_id (fi
, &var
->root
->frame
);
460 old_fi
= selected_frame
;
464 /* We definitively need to catch errors here.
465 If evaluate_expression succeeds we got the value we wanted.
466 But if it fails, we still go on with a call to evaluate_type() */
467 if (gdb_evaluate_expression (var
->root
->exp
, &var
->value
))
470 release_value (var
->value
);
471 if (VALUE_LAZY (var
->value
))
472 gdb_value_fetch_lazy (var
->value
);
475 var
->value
= evaluate_type (var
->root
->exp
);
477 var
->type
= VALUE_TYPE (var
->value
);
479 /* Set language info */
480 lang
= variable_language (var
);
481 var
->root
->lang
= languages
[lang
];
483 /* Set ourselves as our root */
484 var
->root
->rootvar
= var
;
486 /* Reset the selected frame */
488 select_frame (old_fi
);
491 /* If the variable object name is null, that means this
492 is a temporary variable, so don't install it. */
494 if ((var
!= NULL
) && (objname
!= NULL
))
496 var
->obj_name
= savestring (objname
, strlen (objname
));
498 /* If a varobj name is duplicated, the install will fail so
500 if (!install_variable (var
))
502 do_cleanups (old_chain
);
507 discard_cleanups (old_chain
);
511 /* Generates an unique name that can be used for a varobj */
514 varobj_gen_name (void)
519 /* generate a name for this object */
521 xasprintf (&obj_name
, "var%d", id
);
526 /* Given an "objname", returns the pointer to the corresponding varobj
527 or NULL if not found */
530 varobj_get_handle (char *objname
)
534 unsigned int index
= 0;
537 for (chp
= objname
; *chp
; chp
++)
539 index
= (index
+ (i
++ * (unsigned int) *chp
)) % VAROBJ_TABLE_SIZE
;
542 cv
= *(varobj_table
+ index
);
543 while ((cv
!= NULL
) && (strcmp (cv
->var
->obj_name
, objname
) != 0))
547 error ("Variable object not found");
552 /* Given the handle, return the name of the object */
555 varobj_get_objname (struct varobj
*var
)
557 return var
->obj_name
;
560 /* Given the handle, return the expression represented by the object */
563 varobj_get_expression (struct varobj
*var
)
565 return name_of_variable (var
);
568 /* Deletes a varobj and all its children if only_children == 0,
569 otherwise deletes only the children; returns a malloc'ed list of all the
570 (malloc'ed) names of the variables that have been deleted (NULL terminated) */
573 varobj_delete (struct varobj
*var
, char ***dellist
, int only_children
)
577 struct cpstack
*result
= NULL
;
580 /* Initialize a stack for temporary results */
581 cppush (&result
, NULL
);
584 /* Delete only the variable children */
585 delcount
= delete_variable (&result
, var
, 1 /* only the children */ );
587 /* Delete the variable and all its children */
588 delcount
= delete_variable (&result
, var
, 0 /* parent+children */ );
590 /* We may have been asked to return a list of what has been deleted */
593 *dellist
= xmalloc ((delcount
+ 1) * sizeof (char *));
597 *cp
= cppop (&result
);
598 while ((*cp
!= NULL
) && (mycount
> 0))
602 *cp
= cppop (&result
);
605 if (mycount
|| (*cp
!= NULL
))
606 warning ("varobj_delete: assertion failed - mycount(=%d) <> 0",
613 /* Set/Get variable object display format */
615 enum varobj_display_formats
616 varobj_set_display_format (struct varobj
*var
,
617 enum varobj_display_formats format
)
624 case FORMAT_HEXADECIMAL
:
626 var
->format
= format
;
630 var
->format
= variable_default_display (var
);
636 enum varobj_display_formats
637 varobj_get_display_format (struct varobj
*var
)
643 varobj_get_num_children (struct varobj
*var
)
645 if (var
->num_children
== -1)
646 var
->num_children
= number_of_children (var
);
648 return var
->num_children
;
651 /* Creates a list of the immediate children of a variable object;
652 the return code is the number of such children or -1 on error */
655 varobj_list_children (struct varobj
*var
, struct varobj
***childlist
)
657 struct varobj
*child
;
661 /* sanity check: have we been passed a pointer? */
662 if (childlist
== NULL
)
667 if (var
->num_children
== -1)
668 var
->num_children
= number_of_children (var
);
670 /* List of children */
671 *childlist
= xmalloc ((var
->num_children
+ 1) * sizeof (struct varobj
*));
673 for (i
= 0; i
< var
->num_children
; i
++)
675 /* Mark as the end in case we bail out */
676 *((*childlist
) + i
) = NULL
;
678 /* check if child exists, if not create */
679 name
= name_of_child (var
, i
);
680 child
= child_exists (var
, name
);
682 child
= create_child (var
, i
, name
);
684 *((*childlist
) + i
) = child
;
687 /* End of list is marked by a NULL pointer */
688 *((*childlist
) + i
) = NULL
;
690 return var
->num_children
;
693 /* Obtain the type of an object Variable as a string similar to the one gdb
694 prints on the console */
697 varobj_get_type (struct varobj
*var
)
700 struct cleanup
*old_chain
;
705 /* For the "fake" variables, do not return a type. (It's type is
707 if (CPLUS_FAKE_CHILD (var
))
710 stb
= mem_fileopen ();
711 old_chain
= make_cleanup_ui_file_delete (stb
);
713 /* To print the type, we simply create a zero ``struct value *'' and
714 cast it to our type. We then typeprint this variable. */
715 val
= value_zero (var
->type
, not_lval
);
716 type_print (VALUE_TYPE (val
), "", stb
, -1);
718 thetype
= ui_file_xstrdup (stb
, &length
);
719 do_cleanups (old_chain
);
723 enum varobj_languages
724 varobj_get_language (struct varobj
*var
)
726 return variable_language (var
);
730 varobj_get_attributes (struct varobj
*var
)
734 if (variable_editable (var
))
735 /* FIXME: define masks for attributes */
736 attributes
|= 0x00000001; /* Editable */
742 varobj_get_value (struct varobj
*var
)
744 return my_value_of_variable (var
);
747 /* Set the value of an object variable (if it is editable) to the
748 value of the given expression */
749 /* Note: Invokes functions that can call error() */
752 varobj_set_value (struct varobj
*var
, char *expression
)
757 /* The argument "expression" contains the variable's new value.
758 We need to first construct a legal expression for this -- ugh! */
759 /* Does this cover all the bases? */
760 struct expression
*exp
;
762 int saved_input_radix
= input_radix
;
764 if (var
->value
!= NULL
&& variable_editable (var
) && !var
->error
)
766 char *s
= expression
;
769 input_radix
= 10; /* ALWAYS reset to decimal temporarily */
770 if (!gdb_parse_exp_1 (&s
, 0, 0, &exp
))
771 /* We cannot proceed without a well-formed expression. */
773 if (!gdb_evaluate_expression (exp
, &value
))
775 /* We cannot proceed without a valid expression. */
780 if (!gdb_value_assign (var
->value
, value
, &val
))
782 value_free (var
->value
);
785 input_radix
= saved_input_radix
;
792 /* Returns a malloc'ed list with all root variable objects */
794 varobj_list (struct varobj
***varlist
)
797 struct varobj_root
*croot
;
798 int mycount
= rootcount
;
800 /* Alloc (rootcount + 1) entries for the result */
801 *varlist
= xmalloc ((rootcount
+ 1) * sizeof (struct varobj
*));
805 while ((croot
!= NULL
) && (mycount
> 0))
807 *cv
= croot
->rootvar
;
812 /* Mark the end of the list */
815 if (mycount
|| (croot
!= NULL
))
817 ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)",
823 /* Update the values for a variable and its children. This is a
824 two-pronged attack. First, re-parse the value for the root's
825 expression to see if it's changed. Then go all the way
826 through its children, reconstructing them and noting if they've
829 -1 if there was an error updating the varobj
830 -2 if the type changed
831 Otherwise it is the number of children + parent changed
833 Only root variables can be updated...
835 NOTE: This function may delete the caller's varobj. If it
836 returns -2, then it has done this and VARP will be modified
837 to point to the new varobj. */
840 varobj_update (struct varobj
**varp
, struct varobj
***changelist
)
849 struct varobj
**templist
= NULL
;
851 struct vstack
*stack
= NULL
;
852 struct vstack
*result
= NULL
;
853 struct frame_id old_fid
;
854 struct frame_info
*fi
;
856 /* sanity check: have we been passed a pointer? */
857 if (changelist
== NULL
)
860 /* Only root variables can be updated... */
861 if ((*varp
)->root
->rootvar
!= *varp
)
865 /* Save the selected stack frame, since we will need to change it
866 in order to evaluate expressions. */
867 get_frame_id (selected_frame
, &old_fid
);
869 /* Update the root variable. value_of_root can return NULL
870 if the variable is no longer around, i.e. we stepped out of
871 the frame in which a local existed. We are letting the
872 value_of_root variable dispose of the varobj if the type
875 new = value_of_root (varp
, &type_changed
);
882 /* Initialize a stack for temporary results */
883 vpush (&result
, NULL
);
885 /* If this is a "use_selected_frame" varobj, and its type has changed,
886 them note that it's changed. */
889 vpush (&result
, *varp
);
892 /* If values are not equal, note that it's changed.
893 There a couple of exceptions here, though.
894 We don't want some types to be reported as "changed". */
895 else if (type_changeable (*varp
)
896 && !my_value_equal ((*varp
)->value
, new, &error2
))
898 vpush (&result
, *varp
);
900 /* error2 replaces var->error since this new value
901 WILL replace the old one. */
902 (*varp
)->error
= error2
;
905 /* We must always keep around the new value for this root
906 variable expression, or we lose the updated children! */
907 value_free ((*varp
)->value
);
908 (*varp
)->value
= new;
910 /* Initialize a stack */
911 vpush (&stack
, NULL
);
913 /* Push the root's children */
914 if ((*varp
)->children
!= NULL
)
916 struct varobj_child
*c
;
917 for (c
= (*varp
)->children
; c
!= NULL
; c
= c
->next
)
918 vpush (&stack
, c
->child
);
921 /* Walk through the children, reconstructing them all. */
925 /* Push any children */
926 if (v
->children
!= NULL
)
928 struct varobj_child
*c
;
929 for (c
= v
->children
; c
!= NULL
; c
= c
->next
)
930 vpush (&stack
, c
->child
);
933 /* Update this variable */
934 new = value_of_child (v
->parent
, v
->index
);
935 if (type_changeable (v
) && !my_value_equal (v
->value
, new, &error2
))
937 /* Note that it's changed */
941 /* error2 replaces v->error since this new value
942 WILL replace the old one. */
945 /* We must always keep new values, since children depend on it. */
946 if (v
->value
!= NULL
)
947 value_free (v
->value
);
954 /* Alloc (changed + 1) list entries */
955 /* FIXME: add a cleanup for the allocated list(s)
956 because one day the select_frame called below can longjump */
957 *changelist
= xmalloc ((changed
+ 1) * sizeof (struct varobj
*));
960 templist
= xmalloc ((changed
+ 1) * sizeof (struct varobj
*));
966 /* Copy from result stack to list */
968 *cv
= vpop (&result
);
969 while ((*cv
!= NULL
) && (vleft
> 0))
973 *cv
= vpop (&result
);
976 warning ("varobj_update: assertion failed - vleft <> 0");
980 /* Now we revert the order. */
981 for (i
= 0; i
< changed
; i
++)
982 *(*changelist
+ i
) = *(templist
+ changed
- 1 - i
);
983 *(*changelist
+ changed
) = NULL
;
986 /* Restore selected frame */
987 fi
= frame_find_by_id (old_fid
);
998 /* Helper functions */
1001 * Variable object construction/destruction
1005 delete_variable (struct cpstack
**resultp
, struct varobj
*var
,
1006 int only_children_p
)
1010 delete_variable_1 (resultp
, &delcount
, var
,
1011 only_children_p
, 1 /* remove_from_parent_p */ );
1016 /* Delete the variable object VAR and its children */
1017 /* IMPORTANT NOTE: If we delete a variable which is a child
1018 and the parent is not removed we dump core. It must be always
1019 initially called with remove_from_parent_p set */
1021 delete_variable_1 (struct cpstack
**resultp
, int *delcountp
,
1022 struct varobj
*var
, int only_children_p
,
1023 int remove_from_parent_p
)
1025 struct varobj_child
*vc
;
1026 struct varobj_child
*next
;
1028 /* Delete any children of this variable, too. */
1029 for (vc
= var
->children
; vc
!= NULL
; vc
= next
)
1031 if (!remove_from_parent_p
)
1032 vc
->child
->parent
= NULL
;
1033 delete_variable_1 (resultp
, delcountp
, vc
->child
, 0, only_children_p
);
1038 /* if we were called to delete only the children we are done here */
1039 if (only_children_p
)
1042 /* Otherwise, add it to the list of deleted ones and proceed to do so */
1043 /* If the name is null, this is a temporary variable, that has not
1044 yet been installed, don't report it, it belongs to the caller... */
1045 if (var
->obj_name
!= NULL
)
1047 cppush (resultp
, xstrdup (var
->obj_name
));
1048 *delcountp
= *delcountp
+ 1;
1051 /* If this variable has a parent, remove it from its parent's list */
1052 /* OPTIMIZATION: if the parent of this variable is also being deleted,
1053 (as indicated by remove_from_parent_p) we don't bother doing an
1054 expensive list search to find the element to remove when we are
1055 discarding the list afterwards */
1056 if ((remove_from_parent_p
) && (var
->parent
!= NULL
))
1058 remove_child_from_parent (var
->parent
, var
);
1061 if (var
->obj_name
!= NULL
)
1062 uninstall_variable (var
);
1064 /* Free memory associated with this variable */
1065 free_variable (var
);
1068 /* Install the given variable VAR with the object name VAR->OBJ_NAME. */
1070 install_variable (struct varobj
*var
)
1073 struct vlist
*newvl
;
1075 unsigned int index
= 0;
1078 for (chp
= var
->obj_name
; *chp
; chp
++)
1080 index
= (index
+ (i
++ * (unsigned int) *chp
)) % VAROBJ_TABLE_SIZE
;
1083 cv
= *(varobj_table
+ index
);
1084 while ((cv
!= NULL
) && (strcmp (cv
->var
->obj_name
, var
->obj_name
) != 0))
1088 error ("Duplicate variable object name");
1090 /* Add varobj to hash table */
1091 newvl
= xmalloc (sizeof (struct vlist
));
1092 newvl
->next
= *(varobj_table
+ index
);
1094 *(varobj_table
+ index
) = newvl
;
1096 /* If root, add varobj to root list */
1097 if (var
->root
->rootvar
== var
)
1099 /* Add to list of root variables */
1100 if (rootlist
== NULL
)
1101 var
->root
->next
= NULL
;
1103 var
->root
->next
= rootlist
;
1104 rootlist
= var
->root
;
1111 /* Unistall the object VAR. */
1113 uninstall_variable (struct varobj
*var
)
1117 struct varobj_root
*cr
;
1118 struct varobj_root
*prer
;
1120 unsigned int index
= 0;
1123 /* Remove varobj from hash table */
1124 for (chp
= var
->obj_name
; *chp
; chp
++)
1126 index
= (index
+ (i
++ * (unsigned int) *chp
)) % VAROBJ_TABLE_SIZE
;
1129 cv
= *(varobj_table
+ index
);
1131 while ((cv
!= NULL
) && (strcmp (cv
->var
->obj_name
, var
->obj_name
) != 0))
1138 fprintf_unfiltered (gdb_stdlog
, "Deleting %s\n", var
->obj_name
);
1143 ("Assertion failed: Could not find variable object \"%s\" to delete",
1149 *(varobj_table
+ index
) = cv
->next
;
1151 prev
->next
= cv
->next
;
1155 /* If root, remove varobj from root list */
1156 if (var
->root
->rootvar
== var
)
1158 /* Remove from list of root variables */
1159 if (rootlist
== var
->root
)
1160 rootlist
= var
->root
->next
;
1165 while ((cr
!= NULL
) && (cr
->rootvar
!= var
))
1173 ("Assertion failed: Could not find varobj \"%s\" in root list",
1180 prer
->next
= cr
->next
;
1187 /* Does a child with the name NAME exist in VAR? If so, return its data.
1188 If not, return NULL. */
1189 static struct varobj
*
1190 child_exists (struct varobj
*var
, char *name
)
1192 struct varobj_child
*vc
;
1194 for (vc
= var
->children
; vc
!= NULL
; vc
= vc
->next
)
1196 if (STREQ (vc
->child
->name
, name
))
1203 /* Create and install a child of the parent of the given name */
1204 static struct varobj
*
1205 create_child (struct varobj
*parent
, int index
, char *name
)
1207 struct varobj
*child
;
1210 child
= new_variable ();
1212 /* name is allocated by name_of_child */
1214 child
->index
= index
;
1215 child
->value
= value_of_child (parent
, index
);
1216 if ((!CPLUS_FAKE_CHILD (child
) && child
->value
== NULL
) || parent
->error
)
1218 child
->parent
= parent
;
1219 child
->root
= parent
->root
;
1220 xasprintf (&childs_name
, "%s.%s", parent
->obj_name
, name
);
1221 child
->obj_name
= childs_name
;
1222 install_variable (child
);
1224 /* Save a pointer to this child in the parent */
1225 save_child_in_parent (parent
, child
);
1227 /* Note the type of this child */
1228 child
->type
= type_of_child (child
);
1233 /* FIXME: This should be a generic add to list */
1234 /* Save CHILD in the PARENT's data. */
1236 save_child_in_parent (struct varobj
*parent
, struct varobj
*child
)
1238 struct varobj_child
*vc
;
1240 /* Insert the child at the top */
1241 vc
= parent
->children
;
1243 (struct varobj_child
*) xmalloc (sizeof (struct varobj_child
));
1245 parent
->children
->next
= vc
;
1246 parent
->children
->child
= child
;
1249 /* FIXME: This should be a generic remove from list */
1250 /* Remove the CHILD from the PARENT's list of children. */
1252 remove_child_from_parent (struct varobj
*parent
, struct varobj
*child
)
1254 struct varobj_child
*vc
, *prev
;
1256 /* Find the child in the parent's list */
1258 for (vc
= parent
->children
; vc
!= NULL
;)
1260 if (vc
->child
== child
)
1267 parent
->children
= vc
->next
;
1269 prev
->next
= vc
->next
;
1275 * Miscellaneous utility functions.
1278 /* Allocate memory and initialize a new variable */
1279 static struct varobj
*
1284 var
= (struct varobj
*) xmalloc (sizeof (struct varobj
));
1286 var
->obj_name
= NULL
;
1291 var
->num_children
= -1;
1293 var
->children
= NULL
;
1300 /* Allocate memory and initialize a new root variable */
1301 static struct varobj
*
1302 new_root_variable (void)
1304 struct varobj
*var
= new_variable ();
1305 var
->root
= (struct varobj_root
*) xmalloc (sizeof (struct varobj_root
));;
1306 var
->root
->lang
= NULL
;
1307 var
->root
->exp
= NULL
;
1308 var
->root
->valid_block
= NULL
;
1309 var
->root
->frame
.base
= 0;
1310 var
->root
->frame
.pc
= 0;
1311 var
->root
->use_selected_frame
= 0;
1312 var
->root
->rootvar
= NULL
;
1317 /* Free any allocated memory associated with VAR. */
1319 free_variable (struct varobj
*var
)
1321 /* Free the expression if this is a root variable. */
1322 if (var
->root
->rootvar
== var
)
1324 free_current_contents ((char **) &var
->root
->exp
);
1329 xfree (var
->obj_name
);
1334 do_free_variable_cleanup (void *var
)
1336 free_variable (var
);
1339 static struct cleanup
*
1340 make_cleanup_free_variable (struct varobj
*var
)
1342 return make_cleanup (do_free_variable_cleanup
, var
);
1345 /* This returns the type of the variable. This skips past typedefs
1346 and returns the real type of the variable. It also dereferences
1347 pointers and references. */
1348 static struct type
*
1349 get_type (struct varobj
*var
)
1354 while (type
!= NULL
&& TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1355 type
= TYPE_TARGET_TYPE (type
);
1360 /* This returns the type of the variable, dereferencing pointers, too. */
1361 static struct type
*
1362 get_type_deref (struct varobj
*var
)
1366 type
= get_type (var
);
1368 if (type
!= NULL
&& (TYPE_CODE (type
) == TYPE_CODE_PTR
1369 || TYPE_CODE (type
) == TYPE_CODE_REF
))
1370 type
= get_target_type (type
);
1375 /* This returns the target type (or NULL) of TYPE, also skipping
1376 past typedefs, just like get_type (). */
1377 static struct type
*
1378 get_target_type (struct type
*type
)
1382 type
= TYPE_TARGET_TYPE (type
);
1383 while (type
!= NULL
&& TYPE_CODE (type
) == TYPE_CODE_TYPEDEF
)
1384 type
= TYPE_TARGET_TYPE (type
);
1390 /* What is the default display for this variable? We assume that
1391 everything is "natural". Any exceptions? */
1392 static enum varobj_display_formats
1393 variable_default_display (struct varobj
*var
)
1395 return FORMAT_NATURAL
;
1398 /* This function is similar to gdb's value_equal, except that this
1399 one is "safe" -- it NEVER longjmps. It determines if the VAR's
1400 value is the same as VAL2. */
1402 my_value_equal (struct value
*val1
, struct value
*val2
, int *error2
)
1407 /* Special case: NULL values. If both are null, say
1409 if (val1
== NULL
&& val2
== NULL
)
1411 else if (val1
== NULL
|| val2
== NULL
)
1414 /* This is bogus, but unfortunately necessary. We must know
1415 exactly what caused an error -- reading val1 or val2 -- so
1416 that we can really determine if we think that something has changed. */
1419 /* We do need to catch errors here because the whole purpose
1420 is to test if value_equal() has errored */
1421 if (!gdb_value_equal (val1
, val1
, &r
))
1424 if (!gdb_value_equal (val2
, val2
, &r
))
1430 if (!gdb_value_equal (val1
, val2
, &r
))
1432 /* An error occurred, this could have happened if
1433 either val1 or val2 errored. ERR1 and ERR2 tell
1434 us which of these it is. If both errored, then
1435 we assume nothing has changed. If one of them is
1436 valid, though, then something has changed. */
1439 /* both the old and new values caused errors, so
1440 we say the value did not change */
1441 /* This is indeterminate, though. Perhaps we should
1442 be safe and say, yes, it changed anyway?? */
1454 /* FIXME: The following should be generic for any pointer */
1456 vpush (struct vstack
**pstack
, struct varobj
*var
)
1460 s
= (struct vstack
*) xmalloc (sizeof (struct vstack
));
1466 /* FIXME: The following should be generic for any pointer */
1467 static struct varobj
*
1468 vpop (struct vstack
**pstack
)
1473 if ((*pstack
)->var
== NULL
&& (*pstack
)->next
== NULL
)
1478 *pstack
= (*pstack
)->next
;
1484 /* FIXME: The following should be generic for any pointer */
1486 cppush (struct cpstack
**pstack
, char *name
)
1490 s
= (struct cpstack
*) xmalloc (sizeof (struct cpstack
));
1496 /* FIXME: The following should be generic for any pointer */
1498 cppop (struct cpstack
**pstack
)
1503 if ((*pstack
)->name
== NULL
&& (*pstack
)->next
== NULL
)
1508 *pstack
= (*pstack
)->next
;
1515 * Language-dependencies
1518 /* Common entry points */
1520 /* Get the language of variable VAR. */
1521 static enum varobj_languages
1522 variable_language (struct varobj
*var
)
1524 enum varobj_languages lang
;
1526 switch (var
->root
->exp
->language_defn
->la_language
)
1532 case language_cplus
:
1543 /* Return the number of children for a given variable.
1544 The result of this function is defined by the language
1545 implementation. The number of children returned by this function
1546 is the number of children that the user will see in the variable
1549 number_of_children (struct varobj
*var
)
1551 return (*var
->root
->lang
->number_of_children
) (var
);;
1554 /* What is the expression for the root varobj VAR? Returns a malloc'd string. */
1556 name_of_variable (struct varobj
*var
)
1558 return (*var
->root
->lang
->name_of_variable
) (var
);
1561 /* What is the name of the INDEX'th child of VAR? Returns a malloc'd string. */
1563 name_of_child (struct varobj
*var
, int index
)
1565 return (*var
->root
->lang
->name_of_child
) (var
, index
);
1568 /* What is the ``struct value *'' of the root variable VAR?
1569 TYPE_CHANGED controls what to do if the type of a
1570 use_selected_frame = 1 variable changes. On input,
1571 TYPE_CHANGED = 1 means discard the old varobj, and replace
1572 it with this one. TYPE_CHANGED = 0 means leave it around.
1573 NB: In both cases, var_handle will point to the new varobj,
1574 so if you use TYPE_CHANGED = 0, you will have to stash the
1575 old varobj pointer away somewhere before calling this.
1576 On return, TYPE_CHANGED will be 1 if the type has changed, and
1578 static struct value
*
1579 value_of_root (struct varobj
**var_handle
, int *type_changed
)
1583 if (var_handle
== NULL
)
1588 /* This should really be an exception, since this should
1589 only get called with a root variable. */
1591 if (var
->root
->rootvar
!= var
)
1594 if (var
->root
->use_selected_frame
)
1596 struct varobj
*tmp_var
;
1597 char *old_type
, *new_type
;
1598 old_type
= varobj_get_type (var
);
1599 tmp_var
= varobj_create (NULL
, var
->name
, (CORE_ADDR
) 0,
1600 USE_SELECTED_FRAME
);
1601 if (tmp_var
== NULL
)
1605 new_type
= varobj_get_type (tmp_var
);
1606 if (strcmp (old_type
, new_type
) == 0)
1608 varobj_delete (tmp_var
, NULL
, 0);
1616 savestring (var
->obj_name
, strlen (var
->obj_name
));
1617 varobj_delete (var
, NULL
, 0);
1621 tmp_var
->obj_name
= varobj_gen_name ();
1623 install_variable (tmp_var
);
1624 *var_handle
= tmp_var
;
1634 return (*var
->root
->lang
->value_of_root
) (var_handle
);
1637 /* What is the ``struct value *'' for the INDEX'th child of PARENT? */
1638 static struct value
*
1639 value_of_child (struct varobj
*parent
, int index
)
1641 struct value
*value
;
1643 value
= (*parent
->root
->lang
->value_of_child
) (parent
, index
);
1645 /* If we're being lazy, fetch the real value of the variable. */
1646 if (value
!= NULL
&& VALUE_LAZY (value
))
1648 /* If we fail to fetch the value of the child, return
1649 NULL so that callers notice that we're leaving an
1651 if (!gdb_value_fetch_lazy (value
))
1658 /* What is the type of VAR? */
1659 static struct type
*
1660 type_of_child (struct varobj
*var
)
1663 /* If the child had no evaluation errors, var->value
1664 will be non-NULL and contain a valid type. */
1665 if (var
->value
!= NULL
)
1666 return VALUE_TYPE (var
->value
);
1668 /* Otherwise, we must compute the type. */
1669 return (*var
->root
->lang
->type_of_child
) (var
->parent
, var
->index
);
1672 /* Is this variable editable? Use the variable's type to make
1673 this determination. */
1675 variable_editable (struct varobj
*var
)
1677 return (*var
->root
->lang
->variable_editable
) (var
);
1680 /* GDB already has a command called "value_of_variable". Sigh. */
1682 my_value_of_variable (struct varobj
*var
)
1684 return (*var
->root
->lang
->value_of_variable
) (var
);
1687 /* Is VAR something that can change? Depending on language,
1688 some variable's values never change. For example,
1689 struct and unions never change values. */
1691 type_changeable (struct varobj
*var
)
1696 if (CPLUS_FAKE_CHILD (var
))
1699 type
= get_type (var
);
1701 switch (TYPE_CODE (type
))
1703 case TYPE_CODE_STRUCT
:
1704 case TYPE_CODE_UNION
:
1705 case TYPE_CODE_ARRAY
:
1718 c_number_of_children (struct varobj
*var
)
1721 struct type
*target
;
1724 type
= get_type (var
);
1725 target
= get_target_type (type
);
1728 switch (TYPE_CODE (type
))
1730 case TYPE_CODE_ARRAY
:
1731 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (target
) > 0
1732 && TYPE_ARRAY_UPPER_BOUND_TYPE (type
) != BOUND_CANNOT_BE_DETERMINED
)
1733 children
= TYPE_LENGTH (type
) / TYPE_LENGTH (target
);
1738 case TYPE_CODE_STRUCT
:
1739 case TYPE_CODE_UNION
:
1740 children
= TYPE_NFIELDS (type
);
1744 /* This is where things get compilcated. All pointers have one child.
1745 Except, of course, for struct and union ptr, which we automagically
1746 dereference for the user and function ptrs, which have no children.
1747 We also don't dereference void* as we don't know what to show.
1748 We can show char* so we allow it to be dereferenced. If you decide
1749 to test for it, please mind that a little magic is necessary to
1750 properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and
1751 TYPE_NAME == "char" */
1753 switch (TYPE_CODE (target
))
1755 case TYPE_CODE_STRUCT
:
1756 case TYPE_CODE_UNION
:
1757 children
= TYPE_NFIELDS (target
);
1760 case TYPE_CODE_FUNC
:
1761 case TYPE_CODE_VOID
:
1771 /* Other types have no children */
1779 c_name_of_variable (struct varobj
*parent
)
1781 return savestring (parent
->name
, strlen (parent
->name
));
1785 c_name_of_child (struct varobj
*parent
, int index
)
1788 struct type
*target
;
1792 type
= get_type (parent
);
1793 target
= get_target_type (type
);
1795 switch (TYPE_CODE (type
))
1797 case TYPE_CODE_ARRAY
:
1798 xasprintf (&name
, "%d", index
);
1801 case TYPE_CODE_STRUCT
:
1802 case TYPE_CODE_UNION
:
1803 string
= TYPE_FIELD_NAME (type
, index
);
1804 name
= savestring (string
, strlen (string
));
1808 switch (TYPE_CODE (target
))
1810 case TYPE_CODE_STRUCT
:
1811 case TYPE_CODE_UNION
:
1812 string
= TYPE_FIELD_NAME (target
, index
);
1813 name
= savestring (string
, strlen (string
));
1817 xasprintf (&name
, "*%s", parent
->name
);
1823 /* This should not happen */
1824 name
= xstrdup ("???");
1830 static struct value
*
1831 c_value_of_root (struct varobj
**var_handle
)
1833 struct value
*new_val
;
1834 struct varobj
*var
= *var_handle
;
1835 struct frame_info
*fi
;
1838 /* Only root variables can be updated... */
1839 if (var
->root
->rootvar
!= var
)
1840 /* Not a root var */
1844 /* Determine whether the variable is still around. */
1845 if (var
->root
->valid_block
== NULL
)
1849 reinit_frame_cache ();
1850 fi
= frame_find_by_id (var
->root
->frame
);
1851 within_scope
= fi
!= NULL
;
1852 /* FIXME: select_frame could fail */
1859 /* We need to catch errors here, because if evaluate
1860 expression fails we just want to make val->error = 1 and
1862 if (gdb_evaluate_expression (var
->root
->exp
, &new_val
))
1864 if (VALUE_LAZY (new_val
))
1866 /* We need to catch errors because if
1867 value_fetch_lazy fails we still want to continue
1868 (after making val->error = 1) */
1869 /* FIXME: Shouldn't be using VALUE_CONTENTS? The
1870 comment on value_fetch_lazy() says it is only
1871 called from the macro... */
1872 if (!gdb_value_fetch_lazy (new_val
))
1881 release_value (new_val
);
1888 static struct value
*
1889 c_value_of_child (struct varobj
*parent
, int index
)
1891 struct value
*value
;
1893 struct value
*indval
;
1894 struct type
*type
, *target
;
1897 type
= get_type (parent
);
1898 target
= get_target_type (type
);
1899 name
= name_of_child (parent
, index
);
1900 temp
= parent
->value
;
1905 switch (TYPE_CODE (type
))
1907 case TYPE_CODE_ARRAY
:
1909 /* This breaks if the array lives in a (vector) register. */
1910 value
= value_slice (temp
, index
, 1);
1911 temp
= value_coerce_array (value
);
1912 gdb_value_ind (temp
, &value
);
1914 indval
= value_from_longest (builtin_type_int
, (LONGEST
) index
);
1915 gdb_value_subscript (temp
, indval
, &value
);
1919 case TYPE_CODE_STRUCT
:
1920 case TYPE_CODE_UNION
:
1921 gdb_value_struct_elt (NULL
, &value
, &temp
, NULL
, name
, NULL
,
1926 switch (TYPE_CODE (target
))
1928 case TYPE_CODE_STRUCT
:
1929 case TYPE_CODE_UNION
:
1930 gdb_value_struct_elt (NULL
, &value
, &temp
, NULL
, name
, NULL
,
1935 gdb_value_ind (temp
, &value
);
1946 release_value (value
);
1952 static struct type
*
1953 c_type_of_child (struct varobj
*parent
, int index
)
1956 char *name
= name_of_child (parent
, index
);
1958 switch (TYPE_CODE (parent
->type
))
1960 case TYPE_CODE_ARRAY
:
1961 type
= TYPE_TARGET_TYPE (parent
->type
);
1964 case TYPE_CODE_STRUCT
:
1965 case TYPE_CODE_UNION
:
1966 type
= lookup_struct_elt_type (parent
->type
, name
, 0);
1970 switch (TYPE_CODE (TYPE_TARGET_TYPE (parent
->type
)))
1972 case TYPE_CODE_STRUCT
:
1973 case TYPE_CODE_UNION
:
1974 type
= lookup_struct_elt_type (parent
->type
, name
, 0);
1978 type
= TYPE_TARGET_TYPE (parent
->type
);
1984 /* This should not happen as only the above types have children */
1985 warning ("Child of parent whose type does not allow children");
1986 /* FIXME: Can we still go on? */
1996 c_variable_editable (struct varobj
*var
)
1998 switch (TYPE_CODE (get_type (var
)))
2000 case TYPE_CODE_STRUCT
:
2001 case TYPE_CODE_UNION
:
2002 case TYPE_CODE_ARRAY
:
2003 case TYPE_CODE_FUNC
:
2004 case TYPE_CODE_MEMBER
:
2005 case TYPE_CODE_METHOD
:
2016 c_value_of_variable (struct varobj
*var
)
2018 /* BOGUS: if val_print sees a struct/class, it will print out its
2019 children instead of "{...}" */
2021 switch (TYPE_CODE (get_type (var
)))
2023 case TYPE_CODE_STRUCT
:
2024 case TYPE_CODE_UNION
:
2025 return xstrdup ("{...}");
2028 case TYPE_CODE_ARRAY
:
2031 xasprintf (&number
, "[%d]", var
->num_children
);
2038 if (var
->value
== NULL
)
2040 /* This can happen if we attempt to get the value of a struct
2041 member when the parent is an invalid pointer. This is an
2042 error condition, so we should tell the caller. */
2048 struct ui_file
*stb
= mem_fileopen ();
2049 struct cleanup
*old_chain
= make_cleanup_ui_file_delete (stb
);
2052 if (VALUE_LAZY (var
->value
))
2053 gdb_value_fetch_lazy (var
->value
);
2054 val_print (VALUE_TYPE (var
->value
),
2055 VALUE_CONTENTS_RAW (var
->value
), 0,
2056 VALUE_ADDRESS (var
->value
), stb
,
2057 format_code
[(int) var
->format
], 1, 0, 0);
2058 thevalue
= ui_file_xstrdup (stb
, &dummy
);
2059 do_cleanups (old_chain
);
2070 cplus_number_of_children (struct varobj
*var
)
2073 int children
, dont_know
;
2078 if (!CPLUS_FAKE_CHILD (var
))
2080 type
= get_type_deref (var
);
2082 if (((TYPE_CODE (type
)) == TYPE_CODE_STRUCT
) ||
2083 ((TYPE_CODE (type
)) == TYPE_CODE_UNION
))
2087 cplus_class_num_children (type
, kids
);
2088 if (kids
[v_public
] != 0)
2090 if (kids
[v_private
] != 0)
2092 if (kids
[v_protected
] != 0)
2095 /* Add any baseclasses */
2096 children
+= TYPE_N_BASECLASSES (type
);
2099 /* FIXME: save children in var */
2106 type
= get_type_deref (var
->parent
);
2108 cplus_class_num_children (type
, kids
);
2109 if (STREQ (var
->name
, "public"))
2110 children
= kids
[v_public
];
2111 else if (STREQ (var
->name
, "private"))
2112 children
= kids
[v_private
];
2114 children
= kids
[v_protected
];
2119 children
= c_number_of_children (var
);
2124 /* Compute # of public, private, and protected variables in this class.
2125 That means we need to descend into all baseclasses and find out
2126 how many are there, too. */
2128 cplus_class_num_children (struct type
*type
, int children
[3])
2132 children
[v_public
] = 0;
2133 children
[v_private
] = 0;
2134 children
[v_protected
] = 0;
2136 for (i
= TYPE_N_BASECLASSES (type
); i
< TYPE_NFIELDS (type
); i
++)
2138 /* If we have a virtual table pointer, omit it. */
2139 if (TYPE_VPTR_BASETYPE (type
) == type
&& TYPE_VPTR_FIELDNO (type
) == i
)
2142 if (TYPE_FIELD_PROTECTED (type
, i
))
2143 children
[v_protected
]++;
2144 else if (TYPE_FIELD_PRIVATE (type
, i
))
2145 children
[v_private
]++;
2147 children
[v_public
]++;
2152 cplus_name_of_variable (struct varobj
*parent
)
2154 return c_name_of_variable (parent
);
2158 cplus_name_of_child (struct varobj
*parent
, int index
)
2164 if (CPLUS_FAKE_CHILD (parent
))
2166 /* Looking for children of public, private, or protected. */
2167 type
= get_type_deref (parent
->parent
);
2170 type
= get_type_deref (parent
);
2173 switch (TYPE_CODE (type
))
2175 case TYPE_CODE_STRUCT
:
2176 case TYPE_CODE_UNION
:
2177 cplus_class_num_children (type
, children
);
2179 if (CPLUS_FAKE_CHILD (parent
))
2183 /* Skip over vptr, if it exists. */
2184 if (TYPE_VPTR_BASETYPE (type
) == type
2185 && index
>= TYPE_VPTR_FIELDNO (type
))
2188 /* FIXME: This assumes that type orders
2189 inherited, public, private, protected */
2190 i
= index
+ TYPE_N_BASECLASSES (type
);
2191 if (STREQ (parent
->name
, "private")
2192 || STREQ (parent
->name
, "protected"))
2193 i
+= children
[v_public
];
2194 if (STREQ (parent
->name
, "protected"))
2195 i
+= children
[v_private
];
2197 name
= TYPE_FIELD_NAME (type
, i
);
2199 else if (index
< TYPE_N_BASECLASSES (type
))
2200 name
= TYPE_FIELD_NAME (type
, index
);
2203 /* Everything beyond the baseclasses can
2204 only be "public", "private", or "protected" */
2205 index
-= TYPE_N_BASECLASSES (type
);
2209 if (children
[v_public
] != 0)
2215 if (children
[v_private
] != 0)
2221 if (children
[v_protected
] != 0)
2238 return c_name_of_child (parent
, index
);
2242 name
= savestring (name
, strlen (name
));
2248 static struct value
*
2249 cplus_value_of_root (struct varobj
**var_handle
)
2251 return c_value_of_root (var_handle
);
2254 static struct value
*
2255 cplus_value_of_child (struct varobj
*parent
, int index
)
2258 struct value
*value
;
2260 if (CPLUS_FAKE_CHILD (parent
))
2261 type
= get_type_deref (parent
->parent
);
2263 type
= get_type_deref (parent
);
2267 if (((TYPE_CODE (type
)) == TYPE_CODE_STRUCT
) ||
2268 ((TYPE_CODE (type
)) == TYPE_CODE_UNION
))
2270 if (CPLUS_FAKE_CHILD (parent
))
2273 struct value
*temp
= parent
->parent
->value
;
2278 name
= name_of_child (parent
, index
);
2279 gdb_value_struct_elt (NULL
, &value
, &temp
, NULL
, name
, NULL
,
2282 release_value (value
);
2286 else if (index
>= TYPE_N_BASECLASSES (type
))
2288 /* public, private, or protected */
2294 if (parent
->value
!= NULL
)
2296 struct value
*temp
= NULL
;
2298 if (TYPE_CODE (VALUE_TYPE (parent
->value
)) == TYPE_CODE_PTR
2299 || TYPE_CODE (VALUE_TYPE (parent
->value
)) == TYPE_CODE_REF
)
2301 if (!gdb_value_ind (parent
->value
, &temp
))
2305 temp
= parent
->value
;
2309 value
= value_cast (TYPE_FIELD_TYPE (type
, index
), temp
);
2310 release_value (value
);
2314 /* We failed to evaluate the parent's value, so don't even
2315 bother trying to evaluate this child. */
2323 return c_value_of_child (parent
, index
);
2328 static struct type
*
2329 cplus_type_of_child (struct varobj
*parent
, int index
)
2331 struct type
*type
, *t
;
2333 if (CPLUS_FAKE_CHILD (parent
))
2335 /* Looking for the type of a child of public, private, or protected. */
2336 t
= get_type_deref (parent
->parent
);
2339 t
= get_type_deref (parent
);
2342 switch (TYPE_CODE (t
))
2344 case TYPE_CODE_STRUCT
:
2345 case TYPE_CODE_UNION
:
2346 if (CPLUS_FAKE_CHILD (parent
))
2348 char *name
= cplus_name_of_child (parent
, index
);
2349 type
= lookup_struct_elt_type (t
, name
, 0);
2352 else if (index
< TYPE_N_BASECLASSES (t
))
2353 type
= TYPE_FIELD_TYPE (t
, index
);
2366 return c_type_of_child (parent
, index
);
2372 cplus_variable_editable (struct varobj
*var
)
2374 if (CPLUS_FAKE_CHILD (var
))
2377 return c_variable_editable (var
);
2381 cplus_value_of_variable (struct varobj
*var
)
2384 /* If we have one of our special types, don't print out
2386 if (CPLUS_FAKE_CHILD (var
))
2387 return xstrdup ("");
2389 return c_value_of_variable (var
);
2395 java_number_of_children (struct varobj
*var
)
2397 return cplus_number_of_children (var
);
2401 java_name_of_variable (struct varobj
*parent
)
2405 name
= cplus_name_of_variable (parent
);
2406 /* If the name has "-" in it, it is because we
2407 needed to escape periods in the name... */
2410 while (*p
!= '\000')
2421 java_name_of_child (struct varobj
*parent
, int index
)
2425 name
= cplus_name_of_child (parent
, index
);
2426 /* Escape any periods in the name... */
2429 while (*p
!= '\000')
2439 static struct value
*
2440 java_value_of_root (struct varobj
**var_handle
)
2442 return cplus_value_of_root (var_handle
);
2445 static struct value
*
2446 java_value_of_child (struct varobj
*parent
, int index
)
2448 return cplus_value_of_child (parent
, index
);
2451 static struct type
*
2452 java_type_of_child (struct varobj
*parent
, int index
)
2454 return cplus_type_of_child (parent
, index
);
2458 java_variable_editable (struct varobj
*var
)
2460 return cplus_variable_editable (var
);
2464 java_value_of_variable (struct varobj
*var
)
2466 return cplus_value_of_variable (var
);
2469 extern void _initialize_varobj (void);
2471 _initialize_varobj (void)
2473 int sizeof_table
= sizeof (struct vlist
*) * VAROBJ_TABLE_SIZE
;
2475 varobj_table
= xmalloc (sizeof_table
);
2476 memset (varobj_table
, 0, sizeof_table
);
2478 add_show_from_set (add_set_cmd ("debugvarobj", class_maintenance
, var_zinteger
, (char *) &varobjdebug
, "Set varobj debugging.\n\
2479 When non-zero, varobj debugging is enabled.", &setlist
),