static char *cppop (struct cpstack **pstack);
+static int update_type_if_necessary (struct varobj *var,
+ struct value *new_value);
+
static int install_new_value (struct varobj *var, struct value *value,
int initial);
var->type = value_type (type_only_value);
}
- else
- var->type = value_type (value);
+ else
+ {
+ int real_type_found = 0;
+
+ var->type = value_actual_type (value, 0, &real_type_found);
+ if (real_type_found)
+ value = value_cast (var->type, value);
+ }
/* Set language info */
lang = variable_language (var);
static void
install_dynamic_child (struct varobj *var,
VEC (varobj_p) **changed,
+ VEC (varobj_p) **type_changed,
VEC (varobj_p) **new,
VEC (varobj_p) **unchanged,
int *cchanged,
{
varobj_p existing = VEC_index (varobj_p, var->children, index);
+ int type_updated = update_type_if_necessary (existing, value);
+ if (type_updated)
+ {
+ if (type_changed)
+ VEC_safe_push (varobj_p, *type_changed, existing);
+ }
if (install_new_value (existing, value, 0))
{
- if (changed)
+ if (!type_updated && changed)
VEC_safe_push (varobj_p, *changed, existing);
}
- else if (unchanged)
+ else if (!type_updated && unchanged)
VEC_safe_push (varobj_p, *unchanged, existing);
}
}
static int
update_dynamic_varobj_children (struct varobj *var,
VEC (varobj_p) **changed,
+ VEC (varobj_p) **type_changed,
VEC (varobj_p) **new,
VEC (varobj_p) **unchanged,
int *cchanged,
if (v == NULL)
gdbpy_print_stack ();
install_dynamic_child (var, can_mention ? changed : NULL,
+ can_mention ? type_changed : NULL,
can_mention ? new : NULL,
can_mention ? unchanged : NULL,
can_mention ? cchanged : NULL, i, name, v);
/* If we have a dynamic varobj, don't report -1 children.
So, try to fetch some children first. */
- update_dynamic_varobj_children (var, NULL, NULL, NULL, &dummy,
+ update_dynamic_varobj_children (var, NULL, NULL, NULL, NULL, &dummy,
0, 0, 0);
}
else
/* This, in theory, can result in the number of children changing without
frontend noticing. But well, calling -var-list-children on the same
varobj twice is not something a sane frontend would do. */
- update_dynamic_varobj_children (var, NULL, NULL, NULL, &children_changed,
- 0, 0, *to);
+ update_dynamic_varobj_children (var, NULL, NULL, NULL, NULL,
+ &children_changed, 0, 0, *to);
restrict_range (var->children, from, to);
return var->children;
}
#endif
}
+/* When using RTTI to determine variable type it may be changed in runtime when
+ the variable value is changed. This function checks whether type of varobj
+ VAR will change when a new value NEW_VALUE is assigned and if it is so
+ updates the type of VAR. */
+
+static int
+update_type_if_necessary (struct varobj *var, struct value *new_value)
+{
+ if (new_value)
+ {
+ struct value_print_options opts;
+
+ get_user_print_options (&opts);
+ if (opts.objectprint)
+ {
+ struct type *new_type;
+ char *curr_type_str, *new_type_str;
+
+ new_type = value_actual_type (new_value, 0, 0);
+ new_type_str = type_to_string (new_type);
+ curr_type_str = varobj_get_type (var);
+ if (strcmp (curr_type_str, new_type_str) != 0)
+ {
+ var->type = new_type;
+
+ /* This information may be not valid for a new type. */
+ varobj_delete (var, NULL, 1);
+ VEC_free (varobj_p, var->children);
+ var->num_children = -1;
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
+
/* Assign a new value to a variable object. If INITIAL is non-zero,
this is the first assignement after the variable object was just
created, or changed type. In that case, just assign the value
value_of_root variable dispose of the varobj if the type
has changed. */
new = value_of_root (varp, &type_changed);
+ if (update_type_if_necessary(*varp, new))
+ type_changed = 1;
r.varobj = *varp;
-
r.type_changed = type_changed;
if (install_new_value ((*varp), new, type_changed))
r.changed = 1;
struct type *new_type;
new = value_of_child (v->parent, v->index);
+ if (update_type_if_necessary(v, new))
+ r.type_changed = 1;
if (new)
new_type = value_type (new);
else
invoked. */
if (v->pretty_printer)
{
- VEC (varobj_p) *changed = 0, *new = 0, *unchanged = 0;
+ VEC (varobj_p) *changed = 0, *type_changed = 0, *unchanged = 0;
+ VEC (varobj_p) *new = 0;
int i, children_changed = 0;
if (v->frozen)
it. */
if (!varobj_has_more (v, 0))
{
- update_dynamic_varobj_children (v, NULL, NULL, NULL,
+ update_dynamic_varobj_children (v, NULL, NULL, NULL, NULL,
&dummy, 0, 0, 0);
if (varobj_has_more (v, 0))
r.changed = 1;
/* If update_dynamic_varobj_children returns 0, then we have
a non-conforming pretty-printer, so we skip it. */
- if (update_dynamic_varobj_children (v, &changed, &new, &unchanged,
- &children_changed, 1,
+ if (update_dynamic_varobj_children (v, &changed, &type_changed, &new,
+ &unchanged, &children_changed, 1,
v->from, v->to))
{
if (children_changed || new)
popped from the work stack first, and so will be
added to result first. This does not affect
correctness, just "nicer". */
+ for (i = VEC_length (varobj_p, type_changed) - 1; i >= 0; --i)
+ {
+ varobj_p tmp = VEC_index (varobj_p, type_changed, i);
+ varobj_update_result r = {0};
+
+ /* Type may change only if value was changed. */
+ r.varobj = tmp;
+ r.changed = 1;
+ r.type_changed = 1;
+ r.value_installed = 1;
+ VEC_safe_push (varobj_update_result, stack, &r);
+ }
for (i = VEC_length (varobj_p, changed) - 1; i >= 0; --i)
{
varobj_p tmp = VEC_index (varobj_p, changed, i);
if (r.changed || r.children_changed)
VEC_safe_push (varobj_update_result, result, &r);
- /* Free CHANGED and UNCHANGED, but not NEW, because NEW
- has been put into the result vector. */
+ /* Free CHANGED, TYPE_CHANGED and UNCHANGED, but not NEW,
+ because NEW has been put into the result vector. */
VEC_free (varobj_p, changed);
+ VEC_free (varobj_p, type_changed);
VEC_free (varobj_p, unchanged);
continue;
if (value != NULL)
/* If the child had no evaluation errors, var->value
will be non-NULL and contain a valid type. */
- child->type = value_type (value);
+ child->type = value_actual_type (value, 0, NULL);
else
/* Otherwise, we must compute the type. */
child->type = (*child->root->lang->type_of_child) (child->parent,
to all types and dereferencing pointers to
structures.
+ If LOOKUP_ACTUAL_TYPE is set the enclosing type of the
+ value will be fetched and if it differs from static type
+ the value will be casted to it.
+
Both TYPE and *TYPE should be non-null. VALUE
can be null if we want to only translate type.
*VALUE can be null as well -- if the parent
static void
adjust_value_for_child_access (struct value **value,
struct type **type,
- int *was_ptr)
+ int *was_ptr,
+ int lookup_actual_type)
{
gdb_assert (type && *type);
/* The 'get_target_type' function calls check_typedef on
result, so we can immediately check type code. No
need to call check_typedef here. */
+
+ /* Access a real type of the value (if necessary and possible). */
+ if (value && *value && lookup_actual_type)
+ {
+ struct type *enclosing_type;
+ int real_type_found = 0;
+
+ enclosing_type = value_actual_type (*value, 1, &real_type_found);
+ if (real_type_found)
+ {
+ *type = enclosing_type;
+ *value = value_cast (enclosing_type, *value);
+ }
+ }
}
/* Implement the "value_is_changeable_p" varobj callback for most
int children = 0;
struct type *target;
- adjust_value_for_child_access (NULL, &type, NULL);
+ adjust_value_for_child_access (NULL, &type, NULL, 0);
target = get_target_type (type);
switch (TYPE_CODE (type))
*cfull_expression = NULL;
parent_expression = varobj_get_path_expr (get_path_expr_parent (parent));
}
- adjust_value_for_child_access (&value, &type, &was_ptr);
+ adjust_value_for_child_access (&value, &type, &was_ptr, 0);
switch (TYPE_CODE (type))
{
static int
cplus_number_of_children (struct varobj *var)
{
+ struct value *value = NULL;
struct type *type;
int children, dont_know;
+ int lookup_actual_type = 0;
+ struct value_print_options opts;
dont_know = 1;
children = 0;
+ get_user_print_options (&opts);
+
if (!CPLUS_FAKE_CHILD (var))
{
type = get_value_type (var);
- adjust_value_for_child_access (NULL, &type, NULL);
+
+ /* It is necessary to access a real type (via RTTI). */
+ if (opts.objectprint)
+ {
+ value = var->value;
+ lookup_actual_type = (TYPE_CODE (var->type) == TYPE_CODE_REF
+ || TYPE_CODE (var->type) == TYPE_CODE_PTR);
+ }
+ adjust_value_for_child_access (&value, &type, NULL, lookup_actual_type);
if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) ||
((TYPE_CODE (type)) == TYPE_CODE_UNION))
int kids[3];
type = get_value_type (var->parent);
- adjust_value_for_child_access (NULL, &type, NULL);
+
+ /* It is necessary to access a real type (via RTTI). */
+ if (opts.objectprint)
+ {
+ struct varobj *parent = var->parent;
+
+ value = parent->value;
+ lookup_actual_type = (TYPE_CODE (parent->type) == TYPE_CODE_REF
+ || TYPE_CODE (parent->type) == TYPE_CODE_PTR);
+ }
+ adjust_value_for_child_access (&value, &type, NULL, lookup_actual_type);
cplus_class_num_children (type, kids);
if (strcmp (var->name, "public") == 0)
struct value *value;
struct type *type;
int was_ptr;
+ int lookup_actual_type = 0;
char *parent_expression = NULL;
+ struct varobj *var;
+ struct value_print_options opts;
if (cname)
*cname = NULL;
if (cfull_expression)
*cfull_expression = NULL;
- if (CPLUS_FAKE_CHILD (parent))
- {
- value = parent->parent->value;
- type = get_value_type (parent->parent);
- if (cfull_expression)
- parent_expression
- = varobj_get_path_expr (get_path_expr_parent (parent->parent));
- }
- else
- {
- value = parent->value;
- type = get_value_type (parent);
- if (cfull_expression)
- parent_expression
- = varobj_get_path_expr (get_path_expr_parent (parent));
- }
+ get_user_print_options (&opts);
+
+ var = (CPLUS_FAKE_CHILD (parent)) ? parent->parent : parent;
+ if (opts.objectprint)
+ lookup_actual_type = (TYPE_CODE (var->type) == TYPE_CODE_REF
+ || TYPE_CODE (var->type) == TYPE_CODE_PTR);
+ value = var->value;
+ type = get_value_type (var);
+ if (cfull_expression)
+ parent_expression = varobj_get_path_expr (get_path_expr_parent (var));
- adjust_value_for_child_access (&value, &type, &was_ptr);
+ adjust_value_for_child_access (&value, &type, &was_ptr, lookup_actual_type);
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
|| TYPE_CODE (type) == TYPE_CODE_UNION)
projects / deliverable / binutils-gdb.git / blobdiff