#include "language.h"
#include "wrapper.h"
#include "gdbcmd.h"
+#include "gdb_string.h"
#include <math.h>
#include "varobj.h"
/* String representations of gdb's format codes */
char *varobj_format_string[] =
-{"natural", "binary", "decimal", "hexadecimal", "octal"};
+ { "natural", "binary", "decimal", "hexadecimal", "octal" };
/* String representations of gdb's known languages */
-char *varobj_language_string[] =
-{"unknown", "C", "C++", "Java"};
+char *varobj_language_string[] = { "unknown", "C", "C++", "Java" };
/* Data structures */
/* Every root variable has one of these structures saved in its
varobj. Members which must be free'd are noted. */
struct varobj_root
- {
+{
- /* Alloc'd expression for this parent. */
- struct expression *exp;
+ /* Alloc'd expression for this parent. */
+ struct expression *exp;
- /* Block for which this expression is valid */
- struct block *valid_block;
+ /* Block for which this expression is valid */
+ struct block *valid_block;
- /* The frame for this expression */
- CORE_ADDR frame;
+ /* The frame for this expression */
+ struct frame_id frame;
- /* If 1, "update" always recomputes the frame & valid block
- using the currently selected frame. */
- int use_selected_frame;
+ /* If 1, "update" always recomputes the frame & valid block
+ using the currently selected frame. */
+ int use_selected_frame;
- /* Language info for this variable and its children */
- struct language_specific *lang;
+ /* Language info for this variable and its children */
+ struct language_specific *lang;
- /* The varobj for this root node. */
- struct varobj *rootvar;
+ /* The varobj for this root node. */
+ struct varobj *rootvar;
- /* Next root variable */
- struct varobj_root *next;
- };
+ /* Next root variable */
+ struct varobj_root *next;
+};
/* Every variable in the system has a structure of this type defined
for it. This structure holds all information necessary to manipulate
a particular object variable. Members which must be freed are noted. */
struct varobj
- {
+{
+
+ /* Alloc'd name of the variable for this object.. If this variable is a
+ child, then this name will be the child's source name.
+ (bar, not foo.bar) */
+ /* NOTE: This is the "expression" */
+ char *name;
- /* Alloc'd name of the variable for this object.. If this variable is a
- child, then this name will be the child's source name.
- (bar, not foo.bar) */
- /* NOTE: This is the "expression" */
- char *name;
+ /* The alloc'd name for this variable's object. This is here for
+ convenience when constructing this object's children. */
+ char *obj_name;
- /* The alloc'd name for this variable's object. This is here for
- convenience when constructing this object's children. */
- char *obj_name;
+ /* Index of this variable in its parent or -1 */
+ int index;
- /* Index of this variable in its parent or -1 */
- int index;
+ /* The type of this variable. This may NEVER be NULL. */
+ struct type *type;
- /* The type of this variable. This may NEVER be NULL. */
- struct type *type;
+ /* The value of this expression or subexpression. This may be NULL. */
+ struct value *value;
- /* The value of this expression or subexpression. This may be NULL. */
- value_ptr value;
+ /* Did an error occur evaluating the expression or getting its value? */
+ int error;
- /* Did an error occur evaluating the expression or getting its value? */
- int error;
+ /* The number of (immediate) children this variable has */
+ int num_children;
- /* The number of (immediate) children this variable has */
- int num_children;
+ /* If this object is a child, this points to its immediate parent. */
+ struct varobj *parent;
- /* If this object is a child, this points to its immediate parent. */
- struct varobj *parent;
+ /* A list of this object's children */
+ struct varobj_child *children;
- /* A list of this object's children */
- struct varobj_child *children;
+ /* Description of the root variable. Points to root variable for children. */
+ struct varobj_root *root;
- /* Description of the root variable. Points to root variable for children. */
- struct varobj_root *root;
+ /* The format of the output for this object */
+ enum varobj_display_formats format;
- /* The format of the output for this object */
- enum varobj_display_formats format;
- };
+ /* Was this variable updated via a varobj_set_value operation */
+ int updated;
+};
/* Every variable keeps a linked list of its children, described
by the following structure. */
/* FIXME: Deprecated. All should use vlist instead */
struct varobj_child
- {
+{
- /* Pointer to the child's data */
- struct varobj *child;
+ /* Pointer to the child's data */
+ struct varobj *child;
- /* Pointer to the next child */
- struct varobj_child *next;
- };
+ /* Pointer to the next child */
+ struct varobj_child *next;
+};
/* A stack of varobjs */
/* FIXME: Deprecated. All should use vlist instead */
struct vstack
- {
- struct varobj *var;
- struct vstack *next;
- };
+{
+ struct varobj *var;
+ struct vstack *next;
+};
struct cpstack
- {
- char *name;
- struct cpstack *next;
- };
+{
+ char *name;
+ struct cpstack *next;
+};
/* A list of varobjs */
struct vlist
- {
- struct varobj *var;
- struct vlist *next;
- };
+{
+ struct varobj *var;
+ struct vlist *next;
+};
/* Private function prototypes */
static enum varobj_display_formats variable_default_display (struct varobj *);
-static int my_value_equal (value_ptr, value_ptr, int *);
+static int my_value_equal (struct value *, struct value *, int *);
static void vpush (struct vstack **pstack, struct varobj *var);
static char *name_of_child (struct varobj *, int);
-static value_ptr value_of_root (struct varobj **var_handle, int *);
+static struct value *value_of_root (struct varobj **var_handle, int *);
-static value_ptr value_of_child (struct varobj *parent, int index);
+static struct value *value_of_child (struct varobj *parent, int index);
static struct type *type_of_child (struct varobj *var);
static char *c_name_of_child (struct varobj *parent, int index);
-static value_ptr c_value_of_root (struct varobj **var_handle);
+static struct value *c_value_of_root (struct varobj **var_handle);
-static value_ptr c_value_of_child (struct varobj *parent, int index);
+static struct value *c_value_of_child (struct varobj *parent, int index);
static struct type *c_type_of_child (struct varobj *parent, int index);
static char *cplus_name_of_child (struct varobj *parent, int index);
-static value_ptr cplus_value_of_root (struct varobj **var_handle);
+static struct value *cplus_value_of_root (struct varobj **var_handle);
-static value_ptr cplus_value_of_child (struct varobj *parent, int index);
+static struct value *cplus_value_of_child (struct varobj *parent, int index);
static struct type *cplus_type_of_child (struct varobj *parent, int index);
static char *java_name_of_child (struct varobj *parent, int index);
-static value_ptr java_value_of_root (struct varobj **var_handle);
+static struct value *java_value_of_root (struct varobj **var_handle);
-static value_ptr java_value_of_child (struct varobj *parent, int index);
+static struct value *java_value_of_child (struct varobj *parent, int index);
static struct type *java_type_of_child (struct varobj *parent, int index);
/* The language specific vector */
struct language_specific
- {
+{
- /* The language of this variable */
- enum varobj_languages language;
+ /* The language of this variable */
+ enum varobj_languages language;
- /* The number of children of PARENT. */
- int (*number_of_children) (struct varobj * parent);
+ /* The number of children of PARENT. */
+ int (*number_of_children) (struct varobj * parent);
- /* The name (expression) of a root varobj. */
- char *(*name_of_variable) (struct varobj * parent);
+ /* The name (expression) of a root varobj. */
+ char *(*name_of_variable) (struct varobj * parent);
- /* The name of the INDEX'th child of PARENT. */
- char *(*name_of_child) (struct varobj * parent, int index);
+ /* The name of the INDEX'th child of PARENT. */
+ char *(*name_of_child) (struct varobj * parent, int index);
- /* The value_ptr of the root variable ROOT. */
- value_ptr (*value_of_root) (struct varobj ** root_handle);
+ /* The ``struct value *'' of the root variable ROOT. */
+ struct value *(*value_of_root) (struct varobj ** root_handle);
- /* The value_ptr of the INDEX'th child of PARENT. */
- value_ptr (*value_of_child) (struct varobj * parent, int index);
+ /* The ``struct value *'' of the INDEX'th child of PARENT. */
+ struct value *(*value_of_child) (struct varobj * parent, int index);
- /* The type of the INDEX'th child of PARENT. */
- struct type *(*type_of_child) (struct varobj * parent, int index);
+ /* The type of the INDEX'th child of PARENT. */
+ struct type *(*type_of_child) (struct varobj * parent, int index);
- /* Is VAR editable? */
- int (*variable_editable) (struct varobj * var);
+ /* Is VAR editable? */
+ int (*variable_editable) (struct varobj * var);
- /* The current value of VAR. */
- char *(*value_of_variable) (struct varobj * var);
- };
+ /* The current value of VAR. */
+ char *(*value_of_variable) (struct varobj * var);
+};
/* Array of known source language routines. */
static struct language_specific
- languages[vlang_end][sizeof (struct language_specific)] =
-{
+ languages[vlang_end][sizeof (struct language_specific)] = {
/* Unknown (try treating as C */
{
- vlang_unknown,
- c_number_of_children,
- c_name_of_variable,
- c_name_of_child,
- c_value_of_root,
- c_value_of_child,
- c_type_of_child,
- c_variable_editable,
- c_value_of_variable
- }
+ vlang_unknown,
+ c_number_of_children,
+ c_name_of_variable,
+ c_name_of_child,
+ c_value_of_root,
+ c_value_of_child,
+ c_type_of_child,
+ c_variable_editable,
+ c_value_of_variable}
,
/* C */
{
- vlang_c,
- c_number_of_children,
- c_name_of_variable,
- c_name_of_child,
- c_value_of_root,
- c_value_of_child,
- c_type_of_child,
- c_variable_editable,
- c_value_of_variable
- }
+ vlang_c,
+ c_number_of_children,
+ c_name_of_variable,
+ c_name_of_child,
+ c_value_of_root,
+ c_value_of_child,
+ c_type_of_child,
+ c_variable_editable,
+ c_value_of_variable}
,
/* C++ */
{
- vlang_cplus,
- cplus_number_of_children,
- cplus_name_of_variable,
- cplus_name_of_child,
- cplus_value_of_root,
- cplus_value_of_child,
- cplus_type_of_child,
- cplus_variable_editable,
- cplus_value_of_variable
- }
+ vlang_cplus,
+ cplus_number_of_children,
+ cplus_name_of_variable,
+ cplus_name_of_child,
+ cplus_value_of_root,
+ cplus_value_of_child,
+ cplus_type_of_child,
+ cplus_variable_editable,
+ cplus_value_of_variable}
,
/* Java */
{
- vlang_java,
- java_number_of_children,
- java_name_of_variable,
- java_name_of_child,
- java_value_of_root,
- java_value_of_child,
- java_type_of_child,
- java_variable_editable,
- java_value_of_variable
- }
+ vlang_java,
+ java_number_of_children,
+ java_name_of_variable,
+ java_name_of_child,
+ java_value_of_root,
+ java_value_of_child,
+ java_type_of_child,
+ java_variable_editable,
+ java_value_of_variable}
};
/* A little convenience enum for dealing with C++/Java */
enum vsections
- {
- v_public = 0, v_private, v_protected
- };
+{
+ v_public = 0, v_private, v_protected
+};
/* Private data */
/* Mappings of varobj_display_formats enums to gdb's format codes */
-static int format_code[] =
-{0, 't', 'd', 'x', 'o'};
+static int format_code[] = { 0, 't', 'd', 'x', 'o' };
/* Header of the list of root variable objects */
static struct varobj_root *rootlist;
/* Creates a varobj (not its children) */
+/* Return the full FRAME which corresponds to the given CORE_ADDR
+ or NULL if no FRAME on the chain corresponds to CORE_ADDR. */
+
+static struct frame_info *
+find_frame_addr_in_frame_chain (CORE_ADDR frame_addr)
+{
+ struct frame_info *frame = NULL;
+
+ if (frame_addr == (CORE_ADDR) 0)
+ return NULL;
+
+ while (1)
+ {
+ frame = get_prev_frame (frame);
+ if (frame == NULL)
+ return NULL;
+ if (get_frame_base (frame) == frame_addr)
+ return frame;
+ }
+}
+
struct varobj *
varobj_create (char *objname,
- char *expression, CORE_ADDR frame,
- enum varobj_type type)
+ char *expression, CORE_ADDR frame, enum varobj_type type)
{
struct varobj *var;
struct frame_info *fi;
of the variable's data as possible */
/* Allow creator to specify context of variable */
- if ((type == USE_CURRENT_FRAME)
- || (type == USE_SELECTED_FRAME))
- fi = selected_frame;
+ if ((type == USE_CURRENT_FRAME) || (type == USE_SELECTED_FRAME))
+ fi = deprecated_selected_frame;
else
+ /* FIXME: cagney/2002-11-23: This code should be doing a
+ lookup using the frame ID and not just the frame's
+ ``address''. This, of course, means an interface change.
+ However, with out that interface change ISAs, such as the
+ ia64 with its two stacks, won't work. Similar goes for the
+ case where there is a frameless function. */
fi = find_frame_addr_in_frame_chain (frame);
/* frame = -2 means always use selected frame */
block = NULL;
if (fi != NULL)
- block = get_frame_block (fi);
+ block = get_frame_block (fi, 0);
p = expression;
innermost_block = NULL;
{
do_cleanups (old_chain);
fprintf_unfiltered (gdb_stderr,
- "Attempt to use a type name as an expression.");
+ "Attempt to use a type name as an expression.");
return NULL;
}
Since select_frame is so benign, just call it for all cases. */
if (fi != NULL)
{
- var->root->frame = FRAME_FP (fi);
- old_fi = selected_frame;
- select_frame (fi, -1);
+ var->root->frame = get_frame_id (fi);
+ old_fi = deprecated_selected_frame;
+ select_frame (fi);
}
/* We definitively need to catch errors here.
/* Reset the selected frame */
if (fi != NULL)
- select_frame (old_fi, -1);
+ select_frame (old_fi);
}
/* If the variable object name is null, that means this
varobj_gen_name (void)
{
static int id = 0;
- char obj_name[31];
+ char *obj_name;
/* generate a name for this object */
id++;
- sprintf (obj_name, "var%d", id);
+ xasprintf (&obj_name, "var%d", id);
- return xstrdup (obj_name);
+ return obj_name;
}
/* Given an "objname", returns the pointer to the corresponding varobj
}
if (mycount || (*cp != NULL))
- warning ("varobj_delete: assertion failed - mycount(=%d) <> 0", mycount);
+ warning ("varobj_delete: assertion failed - mycount(=%d) <> 0",
+ mycount);
}
return delcount;
char *
varobj_get_type (struct varobj *var)
{
- value_ptr val;
+ struct value *val;
struct cleanup *old_chain;
struct ui_file *stb;
char *thetype;
stb = mem_fileopen ();
old_chain = make_cleanup_ui_file_delete (stb);
- /* To print the type, we simply create a zero value_ptr and
+ /* To print the type, we simply create a zero ``struct value *'' and
cast it to our type. We then typeprint this variable. */
val = value_zero (var->type, not_lval);
type_print (VALUE_TYPE (val), "", stb, -1);
int
varobj_set_value (struct varobj *var, char *expression)
{
- value_ptr val;
+ struct value *val;
+ int error;
int offset = 0;
/* The argument "expression" contains the variable's new value.
We need to first construct a legal expression for this -- ugh! */
/* Does this cover all the bases? */
struct expression *exp;
- value_ptr value;
+ struct value *value;
int saved_input_radix = input_radix;
- if (variable_editable (var) && !var->error)
+ if (var->value != NULL && variable_editable (var) && !var->error)
{
char *s = expression;
int i;
- value_ptr temp;
input_radix = 10; /* ALWAYS reset to decimal temporarily */
if (!gdb_parse_exp_1 (&s, 0, 0, &exp))
return 0;
}
- /* If our parent is "public", "private", or "protected", we could
- be asking to modify the value of a baseclass. If so, we need to
- adjust our address by the offset of our baseclass in the subclass,
- since VALUE_ADDRESS (var->value) points at the start of the subclass.
- For some reason, value_cast doesn't take care of this properly. */
- temp = var->value;
- if (var->parent != NULL && CPLUS_FAKE_CHILD (var->parent))
- {
- struct varobj *super, *sub;
- struct type *type;
- super = var->parent->parent;
- sub = super->parent;
- if (sub != NULL)
- {
- /* Yes, it is a baseclass */
- type = get_type_deref (sub);
-
- if (super->index < TYPE_N_BASECLASSES (type))
- {
- temp = value_copy (var->value);
- for (i = 0; i < super->index; i++)
- offset += TYPE_LENGTH (TYPE_FIELD_TYPE (type, i));
- }
- }
- }
-
- VALUE_ADDRESS (temp) += offset;
- if (!gdb_value_assign (temp, value, &val))
+ if (!my_value_equal (var->value, value, &error))
+ var->updated = 1;
+ if (!gdb_value_assign (var->value, value, &val))
return 0;
- VALUE_ADDRESS (val) -= offset;
value_free (var->value);
release_value (val);
var->value = val;
*cv = NULL;
if (mycount || (croot != NULL))
- warning ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)",
- rootcount, mycount);
+ warning
+ ("varobj_list: assertion failed - wrong tally of root vars (%d:%d)",
+ rootcount, mycount);
return rootcount;
}
-2 if the type changed
Otherwise it is the number of children + parent changed
- Only root variables can be updated... */
+ Only root variables can be updated...
+
+ NOTE: This function may delete the caller's varobj. If it
+ returns -2, then it has done this and VARP will be modified
+ to point to the new varobj. */
int
-varobj_update (struct varobj *var, struct varobj ***changelist)
+varobj_update (struct varobj **varp, struct varobj ***changelist)
{
int changed = 0;
int type_changed;
struct varobj *v;
struct varobj **cv;
struct varobj **templist = NULL;
- value_ptr new;
+ struct value *new;
struct vstack *stack = NULL;
struct vstack *result = NULL;
- struct frame_info *old_fi;
+ struct frame_id old_fid;
+ struct frame_info *fi;
/* sanity check: have we been passed a pointer? */
if (changelist == NULL)
return -1;
/* Only root variables can be updated... */
- if (var->root->rootvar != var)
+ if ((*varp)->root->rootvar != *varp)
/* Not a root var */
return -1;
/* Save the selected stack frame, since we will need to change it
in order to evaluate expressions. */
- old_fi = selected_frame;
+ old_fid = get_frame_id (deprecated_selected_frame);
/* Update the root variable. value_of_root can return NULL
if the variable is no longer around, i.e. we stepped out of
value_of_root variable dispose of the varobj if the type
has changed. */
type_changed = 1;
- new = value_of_root (&var, &type_changed);
+ new = value_of_root (varp, &type_changed);
if (new == NULL)
{
- var->error = 1;
+ (*varp)->error = 1;
return -1;
}
them note that it's changed. */
if (type_changed)
{
- vpush (&result, var);
+ vpush (&result, *varp);
changed++;
}
/* If values are not equal, note that it's changed.
There a couple of exceptions here, though.
We don't want some types to be reported as "changed". */
- else if (type_changeable (var) && !my_value_equal (var->value, new, &error2))
+ else if (type_changeable (*varp) &&
+ ((*varp)->updated || !my_value_equal ((*varp)->value, new, &error2)))
{
- vpush (&result, var);
+ vpush (&result, *varp);
+ (*varp)->updated = 0;
changed++;
/* error2 replaces var->error since this new value
WILL replace the old one. */
- var->error = error2;
+ (*varp)->error = error2;
}
/* We must always keep around the new value for this root
variable expression, or we lose the updated children! */
- value_free (var->value);
- var->value = new;
+ value_free ((*varp)->value);
+ (*varp)->value = new;
/* Initialize a stack */
vpush (&stack, NULL);
/* Push the root's children */
- if (var->children != NULL)
+ if ((*varp)->children != NULL)
{
struct varobj_child *c;
- for (c = var->children; c != NULL; c = c->next)
+ for (c = (*varp)->children; c != NULL; c = c->next)
vpush (&stack, c->child);
}
/* Update this variable */
new = value_of_child (v->parent, v->index);
- if (type_changeable (v) && !my_value_equal (v->value, new, &error2))
+ if (type_changeable (v) &&
+ (v->updated || !my_value_equal (v->value, new, &error2)))
{
/* Note that it's changed */
vpush (&result, v);
+ v->updated = 0;
changed++;
}
/* error2 replaces v->error since this new value
if (changed > 1)
{
/* Now we revert the order. */
- for (i=0; i < changed; i++)
- *(*changelist + i) = *(templist + changed -1 - i);
+ for (i = 0; i < changed; i++)
+ *(*changelist + i) = *(templist + changed - 1 - i);
*(*changelist + changed) = NULL;
}
/* Restore selected frame */
- select_frame (old_fi, -1);
+ fi = frame_find_by_id (old_fid);
+ if (fi)
+ select_frame (fi);
if (type_changed)
return -2;
and the parent is not removed we dump core. It must be always
initially called with remove_from_parent_p set */
static void
-delete_variable_1 (struct cpstack **resultp, int *delcountp, struct varobj *var,
- int only_children_p, int remove_from_parent_p)
+delete_variable_1 (struct cpstack **resultp, int *delcountp,
+ struct varobj *var, int only_children_p,
+ int remove_from_parent_p)
{
struct varobj_child *vc;
struct varobj_child *next;
(as indicated by remove_from_parent_p) we don't bother doing an
expensive list search to find the element to remove when we are
discarding the list afterwards */
- if ((remove_from_parent_p) &&
- (var->parent != NULL))
+ if ((remove_from_parent_p) && (var->parent != NULL))
{
remove_child_from_parent (var->parent, var);
}
-
+
if (var->obj_name != NULL)
uninstall_variable (var);
if (cv == NULL)
{
- warning ("Assertion failed: Could not find variable object \"%s\" to delete", var->obj_name);
+ warning
+ ("Assertion failed: Could not find variable object \"%s\" to delete",
+ var->obj_name);
return;
}
}
if (cr == NULL)
{
- warning ("Assertion failed: Could not find varobj \"%s\" in root list", var->obj_name);
+ warning
+ ("Assertion failed: Could not find varobj \"%s\" in root list",
+ var->obj_name);
return;
}
if (prer == NULL)
for (vc = var->children; vc != NULL; vc = vc->next)
{
- if (STREQ (vc->child->name, name))
+ if (strcmp (vc->child->name, name) == 0)
return vc->child;
}
child->name = name;
child->index = index;
child->value = value_of_child (parent, index);
- if (child->value == NULL || parent->error)
+ if ((!CPLUS_FAKE_CHILD (child) && child->value == NULL) || parent->error)
child->error = 1;
child->parent = parent;
child->root = parent->root;
- childs_name = (char *) xmalloc ((strlen (parent->obj_name) + strlen (name) + 2)
- * sizeof (char));
- sprintf (childs_name, "%s.%s", parent->obj_name, name);
+ xasprintf (&childs_name, "%s.%s", parent->obj_name, name);
child->obj_name = childs_name;
install_variable (child);
var->children = NULL;
var->format = 0;
var->root = NULL;
+ var->updated = 0;
return var;
}
var->root->lang = NULL;
var->root->exp = NULL;
var->root->valid_block = NULL;
- var->root->frame = (CORE_ADDR) -1;
+ var->root->frame = null_frame_id;
var->root->use_selected_frame = 0;
var->root->rootvar = NULL;
/* This returns the type of the variable. This skips past typedefs
and returns the real type of the variable. It also dereferences
- pointers and references. */
+ pointers and references.
+
+ NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file
+ except within get_target_type and get_type. */
static struct type *
get_type (struct varobj *var)
{
}
/* This returns the target type (or NULL) of TYPE, also skipping
- past typedefs, just like get_type (). */
+ past typedefs, just like get_type ().
+
+ NOTE: TYPE_TARGET_TYPE should NOT be used anywhere in this file
+ except within get_target_type and get_type. */
static struct type *
get_target_type (struct type *type)
{
one is "safe" -- it NEVER longjmps. It determines if the VAR's
value is the same as VAL2. */
static int
-my_value_equal (value_ptr val1, value_ptr val2, int *error2)
+my_value_equal (struct value *val1, struct value *val2, int *error2)
{
int r, err1, err2;
return (*var->root->lang->name_of_child) (var, index);
}
-/* What is the value_ptr of the root variable VAR?
+/* What is the ``struct value *'' of the root variable VAR?
TYPE_CHANGED controls what to do if the type of a
use_selected_frame = 1 variable changes. On input,
TYPE_CHANGED = 1 means discard the old varobj, and replace
old varobj pointer away somewhere before calling this.
On return, TYPE_CHANGED will be 1 if the type has changed, and
0 otherwise. */
-static value_ptr
+static struct value *
value_of_root (struct varobj **var_handle, int *type_changed)
{
struct varobj *var;
return NULL;
}
new_type = varobj_get_type (tmp_var);
- if (strcmp(old_type, new_type) == 0)
+ if (strcmp (old_type, new_type) == 0)
{
varobj_delete (tmp_var, NULL, 0);
*type_changed = 0;
{
if (*type_changed)
{
- tmp_var->obj_name =
+ tmp_var->obj_name =
savestring (var->obj_name, strlen (var->obj_name));
- uninstall_variable (var);
+ varobj_delete (var, NULL, 0);
}
else
{
- tmp_var->obj_name = varobj_gen_name ();
+ tmp_var->obj_name = varobj_gen_name ();
}
install_variable (tmp_var);
*var_handle = tmp_var;
+ var = *var_handle;
*type_changed = 1;
}
}
return (*var->root->lang->value_of_root) (var_handle);
}
-/* What is the value_ptr for the INDEX'th child of PARENT? */
-static value_ptr
+/* What is the ``struct value *'' for the INDEX'th child of PARENT? */
+static struct value *
value_of_child (struct varobj *parent, int index)
{
- value_ptr value;
+ struct value *value;
value = (*parent->root->lang->value_of_child) (parent, index);
/* If we're being lazy, fetch the real value of the variable. */
if (value != NULL && VALUE_LAZY (value))
- gdb_value_fetch_lazy (value);
+ {
+ /* If we fail to fetch the value of the child, return
+ NULL so that callers notice that we're leaving an
+ error message. */
+ if (!gdb_value_fetch_lazy (value))
+ value = NULL;
+ }
return value;
}
switch (TYPE_CODE (type))
{
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- case TYPE_CODE_ARRAY:
- r = 0;
- break;
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_ARRAY:
+ r = 0;
+ break;
- default:
- r = 1;
+ default:
+ r = 1;
}
return r;
{
case TYPE_CODE_ARRAY:
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0
- && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED)
+ && TYPE_ARRAY_UPPER_BOUND_TYPE (type) != BOUND_CANNOT_BE_DETERMINED)
children = TYPE_LENGTH (type) / TYPE_LENGTH (target);
else
children = -1;
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
- {
- /* We never get here unless parent->num_children is greater than 0... */
- int len = 1;
- while ((int) pow ((double) 10, (double) len) < index)
- len++;
- name = (char *) xmalloc (1 + len * sizeof (char));
- sprintf (name, "%d", index);
- }
+ xasprintf (&name, "%d", index);
break;
case TYPE_CODE_STRUCT:
break;
default:
- name = (char *) xmalloc ((strlen (parent->name) + 2) * sizeof (char));
- sprintf (name, "*%s", parent->name);
+ xasprintf (&name, "*%s", parent->name);
break;
}
break;
return name;
}
-static value_ptr
+static struct value *
c_value_of_root (struct varobj **var_handle)
{
- value_ptr new_val;
+ struct value *new_val;
struct varobj *var = *var_handle;
struct frame_info *fi;
int within_scope;
/* Not a root var */
return NULL;
-
+
/* Determine whether the variable is still around. */
if (var->root->valid_block == NULL)
within_scope = 1;
else
{
reinit_frame_cache ();
-
-
- fi = find_frame_addr_in_frame_chain (var->root->frame);
-
+ fi = frame_find_by_id (var->root->frame);
within_scope = fi != NULL;
/* FIXME: select_frame could fail */
if (within_scope)
- select_frame (fi, -1);
+ select_frame (fi);
}
-
+
if (within_scope)
{
/* We need to catch errors here, because if evaluate
- expression fails we just want to make val->error = 1 and
- go on */
+ expression fails we just want to make val->error = 1 and
+ go on */
if (gdb_evaluate_expression (var->root->exp, &new_val))
{
if (VALUE_LAZY (new_val))
{
/* We need to catch errors because if
- value_fetch_lazy fails we still want to continue
- (after making val->error = 1) */
+ value_fetch_lazy fails we still want to continue
+ (after making val->error = 1) */
/* FIXME: Shouldn't be using VALUE_CONTENTS? The
- comment on value_fetch_lazy() says it is only
- called from the macro... */
+ comment on value_fetch_lazy() says it is only
+ called from the macro... */
if (!gdb_value_fetch_lazy (new_val))
var->error = 1;
else
}
else
var->error = 1;
-
+
release_value (new_val);
return new_val;
}
return NULL;
}
-static value_ptr
+static struct value *
c_value_of_child (struct varobj *parent, int index)
{
- value_ptr value, temp, indval;
+ struct value *value;
+ struct value *temp;
+ struct value *indval;
struct type *type, *target;
char *name;
{
case TYPE_CODE_ARRAY:
#if 0
- /* This breaks if the array lives in a (vector) register. */
+ /* This breaks if the array lives in a (vector) register. */
value = value_slice (temp, index, 1);
temp = value_coerce_array (value);
gdb_value_ind (temp, &value);
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
- value = value_struct_elt (&temp, NULL, name, NULL, "vstructure");
+ gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL,
+ "vstructure");
break;
case TYPE_CODE_PTR:
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
- value = value_struct_elt (&temp, NULL, name, NULL, "vstructure");
+ gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL,
+ "vstructure");
break;
default:
if (value != NULL)
release_value (value);
+ xfree (name);
return value;
}
switch (TYPE_CODE (parent->type))
{
case TYPE_CODE_ARRAY:
- type = TYPE_TARGET_TYPE (parent->type);
+ type = get_target_type (parent->type);
break;
case TYPE_CODE_STRUCT:
break;
case TYPE_CODE_PTR:
- switch (TYPE_CODE (TYPE_TARGET_TYPE (parent->type)))
+ switch (TYPE_CODE (get_target_type (parent->type)))
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
break;
default:
- type = TYPE_TARGET_TYPE (parent->type);
+ type = get_target_type (parent->type);
break;
}
break;
break;
}
+ xfree (name);
return type;
}
static char *
c_value_of_variable (struct varobj *var)
{
- struct type *type;
- value_ptr val;
-
- if (var->value != NULL)
- val = var->value;
- else
- {
- /* This can happen if we attempt to get the value of a struct
- member when the parent is an invalid pointer. */
- return xstrdup ("???");
- }
-
/* BOGUS: if val_print sees a struct/class, it will print out its
children instead of "{...}" */
- type = get_type (var);
- switch (TYPE_CODE (type))
+
+ switch (TYPE_CODE (get_type (var)))
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
case TYPE_CODE_ARRAY:
{
- char number[18];
- sprintf (number, "[%d]", var->num_children);
- return xstrdup (number);
+ char *number;
+ xasprintf (&number, "[%d]", var->num_children);
+ return (number);
}
/* break; */
default:
{
- long dummy;
- struct ui_file *stb = mem_fileopen ();
- struct cleanup *old_chain = make_cleanup_ui_file_delete (stb);
- char *thevalue;
-
- if (VALUE_LAZY (val))
- gdb_value_fetch_lazy (val);
- val_print (VALUE_TYPE (val), VALUE_CONTENTS_RAW (val), 0,
- VALUE_ADDRESS (val),
- stb, format_code[(int) var->format], 1, 0, 0);
- thevalue = ui_file_xstrdup (stb, &dummy);
- do_cleanups (old_chain);
+ if (var->value == NULL)
+ {
+ /* This can happen if we attempt to get the value of a struct
+ member when the parent is an invalid pointer. This is an
+ error condition, so we should tell the caller. */
+ return NULL;
+ }
+ else
+ {
+ long dummy;
+ struct ui_file *stb = mem_fileopen ();
+ struct cleanup *old_chain = make_cleanup_ui_file_delete (stb);
+ char *thevalue;
+
+ if (VALUE_LAZY (var->value))
+ gdb_value_fetch_lazy (var->value);
+ val_print (VALUE_TYPE (var->value),
+ VALUE_CONTENTS_RAW (var->value), 0,
+ VALUE_ADDRESS (var->value), stb,
+ format_code[(int) var->format], 1, 0, 0);
+ thevalue = ui_file_xstrdup (stb, &dummy);
+ do_cleanups (old_chain);
return thevalue;
}
- /* break; */
+ }
}
}
\f
type = get_type_deref (var);
if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) ||
- ((TYPE_CODE (type)) == TYPE_CODE_UNION))
+ ((TYPE_CODE (type)) == TYPE_CODE_UNION))
{
int kids[3];
type = get_type_deref (var->parent);
cplus_class_num_children (type, kids);
- if (STREQ (var->name, "public"))
+ if (strcmp (var->name, "public") == 0)
children = kids[v_public];
- else if (STREQ (var->name, "private"))
+ else if (strcmp (var->name, "private") == 0)
children = kids[v_private];
else
children = kids[v_protected];
for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++)
{
/* If we have a virtual table pointer, omit it. */
- if (TYPE_VPTR_BASETYPE (type) == type
- && TYPE_VPTR_FIELDNO (type) == i)
+ if (TYPE_VPTR_BASETYPE (type) == type && TYPE_VPTR_FIELDNO (type) == i)
continue;
if (TYPE_FIELD_PROTECTED (type, i))
{
char *name;
struct type *type;
- int children[3];
if (CPLUS_FAKE_CHILD (parent))
{
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
- cplus_class_num_children (type, children);
-
if (CPLUS_FAKE_CHILD (parent))
{
- /* FIXME: This assumes that type orders
- inherited, public, private, protected */
- int i = index + TYPE_N_BASECLASSES (type);
- if (STREQ (parent->name, "private") || STREQ (parent->name, "protected"))
- i += children[v_public];
- if (STREQ (parent->name, "protected"))
- i += children[v_private];
-
- name = TYPE_FIELD_NAME (type, i);
+ /* The fields of the class type are ordered as they
+ appear in the class. We are given an index for a
+ particular access control type ("public","protected",
+ or "private"). We must skip over fields that don't
+ have the access control we are looking for to properly
+ find the indexed field. */
+ int type_index = TYPE_N_BASECLASSES (type);
+ if (strcmp (parent->name, "private") == 0)
+ {
+ while (index >= 0)
+ {
+ if (TYPE_VPTR_BASETYPE (type) == type
+ && type_index == TYPE_VPTR_FIELDNO (type))
+ ; /* ignore vptr */
+ else if (TYPE_FIELD_PRIVATE (type, type_index))
+ --index;
+ ++type_index;
+ }
+ --type_index;
+ }
+ else if (strcmp (parent->name, "protected") == 0)
+ {
+ while (index >= 0)
+ {
+ if (TYPE_VPTR_BASETYPE (type) == type
+ && type_index == TYPE_VPTR_FIELDNO (type))
+ ; /* ignore vptr */
+ else if (TYPE_FIELD_PROTECTED (type, type_index))
+ --index;
+ ++type_index;
+ }
+ --type_index;
+ }
+ else
+ {
+ while (index >= 0)
+ {
+ if (TYPE_VPTR_BASETYPE (type) == type
+ && type_index == TYPE_VPTR_FIELDNO (type))
+ ; /* ignore vptr */
+ else if (!TYPE_FIELD_PRIVATE (type, type_index) &&
+ !TYPE_FIELD_PROTECTED (type, type_index))
+ --index;
+ ++type_index;
+ }
+ --type_index;
+ }
+
+ name = TYPE_FIELD_NAME (type, type_index);
}
else if (index < TYPE_N_BASECLASSES (type))
+ /* We are looking up the name of a base class */
name = TYPE_FIELD_NAME (type, index);
else
{
+ int children[3];
+ cplus_class_num_children(type, children);
+
/* Everything beyond the baseclasses can
- only be "public", "private", or "protected" */
+ only be "public", "private", or "protected"
+
+ The special "fake" children are always output by varobj in
+ this order. So if INDEX == 2, it MUST be "protected". */
index -= TYPE_N_BASECLASSES (type);
switch (index)
{
case 0:
- if (children[v_public] != 0)
- {
- name = "public";
- break;
- }
+ if (children[v_public] > 0)
+ name = "public";
+ else if (children[v_private] > 0)
+ name = "private";
+ else
+ name = "protected";
+ break;
case 1:
- if (children[v_private] != 0)
+ if (children[v_public] > 0)
{
- name = "private";
- break;
+ if (children[v_private] > 0)
+ name = "private";
+ else
+ name = "protected";
}
+ else if (children[v_private] > 0)
+ name = "protected";
+ break;
case 2:
- if (children[v_protected] != 0)
- {
- name = "protected";
- break;
- }
+ /* Must be protected */
+ name = "protected";
+ break;
default:
/* error! */
break;
return name;
}
-static value_ptr
+static struct value *
cplus_value_of_root (struct varobj **var_handle)
{
return c_value_of_root (var_handle);
}
-static value_ptr
+static struct value *
cplus_value_of_child (struct varobj *parent, int index)
{
struct type *type;
- value_ptr value;
- char *name;
+ struct value *value;
if (CPLUS_FAKE_CHILD (parent))
type = get_type_deref (parent->parent);
type = get_type_deref (parent);
value = NULL;
- name = name_of_child (parent, index);
if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) ||
((TYPE_CODE (type)) == TYPE_CODE_UNION))
{
if (CPLUS_FAKE_CHILD (parent))
{
- value_ptr temp = parent->parent->value;
- value = value_struct_elt (&temp, NULL, name,
- NULL, "cplus_structure");
- release_value (value);
+ char *name;
+ struct value *temp = parent->parent->value;
+
+ if (temp == NULL)
+ return NULL;
+
+ name = name_of_child (parent, index);
+ gdb_value_struct_elt (NULL, &value, &temp, NULL, name, NULL,
+ "cplus_structure");
+ if (value != NULL)
+ release_value (value);
+
+ xfree (name);
}
else if (index >= TYPE_N_BASECLASSES (type))
{
/* Baseclass */
if (parent->value != NULL)
{
- value_ptr temp;
+ struct value *temp = NULL;
if (TYPE_CODE (VALUE_TYPE (parent->value)) == TYPE_CODE_PTR
|| TYPE_CODE (VALUE_TYPE (parent->value)) == TYPE_CODE_REF)
- gdb_value_ind (parent->value, &temp);
+ {
+ if (!gdb_value_ind (parent->value, &temp))
+ return NULL;
+ }
else
temp = parent->value;
- value = value_cast (TYPE_FIELD_TYPE (type, index), temp);
- release_value (value);
+ if (temp != NULL)
+ {
+ value = value_cast (TYPE_FIELD_TYPE (type, index), temp);
+ release_value (value);
+ }
+ else
+ {
+ /* We failed to evaluate the parent's value, so don't even
+ bother trying to evaluate this child. */
+ return NULL;
+ }
}
}
}
{
struct type *type, *t;
- t = get_type_deref (parent);
+ if (CPLUS_FAKE_CHILD (parent))
+ {
+ /* Looking for the type of a child of public, private, or protected. */
+ t = get_type_deref (parent->parent);
+ }
+ else
+ t = get_type_deref (parent);
+
type = NULL;
switch (TYPE_CODE (t))
{
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
- if (index >= TYPE_N_BASECLASSES (t))
+ if (CPLUS_FAKE_CHILD (parent))
{
- /* special */
- return NULL;
+ char *name = cplus_name_of_child (parent, index);
+ type = lookup_struct_elt_type (t, name, 0);
+ xfree (name);
}
+ else if (index < TYPE_N_BASECLASSES (t))
+ type = TYPE_FIELD_TYPE (t, index);
else
{
- /* Baseclass */
- type = TYPE_FIELD_TYPE (t, index);
+ /* special */
+ return NULL;
}
break;
return name;
}
-static value_ptr
+static struct value *
java_value_of_root (struct varobj **var_handle)
{
return cplus_value_of_root (var_handle);
}
-static value_ptr
+static struct value *
java_value_of_child (struct varobj *parent, int index)
{
return cplus_value_of_child (parent, index);
varobj_table = xmalloc (sizeof_table);
memset (varobj_table, 0, sizeof_table);
- add_show_from_set (
- add_set_cmd ("debugvarobj", class_maintenance, var_zinteger,
- (char *) &varobjdebug,
- "Set varobj debugging.\n\
+ add_show_from_set (add_set_cmd ("debugvarobj", class_maintenance, var_zinteger, (char *) &varobjdebug, "Set varobj debugging.\n\
When non-zero, varobj debugging is enabled.", &setlist),
- &showlist);
+ &showlist);
}
projects / deliverable / binutils-gdb.git / blobdiff