/* Implementation of the GDB variable objects API.
- Copyright (C) 1999-2012 Free Software Foundation, Inc.
+ Copyright (C) 1999-2014 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "valprint.h"
#include "gdb_assert.h"
-#include "gdb_string.h"
+#include <string.h>
#include "gdb_regex.h"
#include "varobj.h"
/* Non-zero if we want to see trace of varobj level stuff. */
-int varobjdebug = 0;
+unsigned int varobjdebug = 0;
static void
show_varobjdebug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
char *varobj_format_string[] =
{ "natural", "binary", "decimal", "hexadecimal", "octal" };
-/* String representations of gdb's known languages. */
-char *varobj_language_string[] = { "unknown", "C", "C++", "Java" };
-
/* True if we want to allow Python-based pretty-printing. */
static int pretty_printing = 0;
struct expression *exp;
/* Block for which this expression is valid. */
- struct block *valid_block;
+ const struct block *valid_block;
/* The frame for this expression. This field is set iff valid_block is
not NULL. */
to symbols that do not exist anymore. */
int is_valid;
- /* Language info for this variable and its children. */
- struct language_specific *lang;
+ /* Language-related operations for this variable and its
+ children. */
+ const struct lang_varobj_ops *lang_ops;
/* The varobj for this root node. */
struct varobj *rootvar;
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 expression for this child. Can be used to create a
- root variable corresponding to this child. */
- char *path_expr;
-
- /* 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;
-
- /* The type of this variable. This can be NULL
- for artifial variable objects -- currently, the "accessibility"
- variable objects in C++. */
- struct type *type;
-
- /* The value of this expression or subexpression. A NULL value
- indicates there was an error getting this value.
- Invariant: if varobj_value_is_changeable_p (this) is non-zero,
- the value is either NULL, or not lazy. */
- struct value *value;
-
- /* 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;
-
- /* Children of this object. */
- VEC (varobj_p) *children;
+/* Dynamic part of varobj. */
+struct varobj_dynamic
+{
/* Whether the children of this varobj were requested. This field is
used to decide if dynamic varobj should recompute their children.
In the event that the frontend never asked for the children, we
can avoid that. */
int children_requested;
- /* 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;
-
- /* Was this variable updated via a varobj_set_value operation. */
- int updated;
-
- /* Last print value. */
- char *print_value;
-
- /* Is this variable frozen. Frozen variables are never implicitly
- updated by -var-update *
- or -var-update <direct-or-indirect-parent>. */
- int frozen;
-
- /* Is the value of this variable intentionally not fetched? It is
- not fetched if either the variable is frozen, or any parents is
- frozen. */
- int not_fetched;
-
- /* Sub-range of children which the MI consumer has requested. If
- FROM < 0 or TO < 0, means that all children have been
- requested. */
- int from;
- int to;
-
/* The pretty-printer constructor. If NULL, then the default
pretty-printer will be looked up. If None, then no
pretty-printer will be installed. */
static struct varobj *create_child (struct varobj *, int, char *);
static struct varobj *
-create_child_with_value (struct varobj *parent, int index, const char *name,
+create_child_with_value (struct varobj *parent, int index, char *name,
struct value *value);
/* Utility routines */
static struct cleanup *make_cleanup_free_variable (struct varobj *var);
-static struct type *get_type (struct varobj *var);
-
-static struct type *get_value_type (struct varobj *var);
-
-static struct type *get_target_type (struct type *);
-
static enum varobj_display_formats variable_default_display (struct varobj *);
static void cppush (struct cpstack **pstack, char *name);
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);
/* Language-specific routines. */
-static enum varobj_languages variable_language (struct varobj *var);
-
static int number_of_children (struct varobj *);
static char *name_of_variable (struct varobj *);
static char *my_value_of_variable (struct varobj *var,
enum varobj_display_formats format);
-static char *value_get_print_value (struct value *value,
- enum varobj_display_formats format,
- struct varobj *var);
-
-static int varobj_value_is_changeable_p (struct varobj *var);
-
static int is_root_p (struct varobj *var);
#if HAVE_PYTHON
static struct varobj *varobj_add_child (struct varobj *var,
- const char *name,
+ char *name,
struct value *value);
#endif /* HAVE_PYTHON */
-/* C implementation */
-
-static int c_number_of_children (struct varobj *var);
-
-static char *c_name_of_variable (struct varobj *parent);
-
-static char *c_name_of_child (struct varobj *parent, int index);
-
-static char *c_path_expr_of_child (struct varobj *child);
-
-static struct value *c_value_of_root (struct varobj **var_handle);
-
-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 *c_value_of_variable (struct varobj *var,
- enum varobj_display_formats format);
-
-/* C++ implementation */
-
-static int cplus_number_of_children (struct varobj *var);
-
-static void cplus_class_num_children (struct type *type, int children[3]);
-
-static char *cplus_name_of_variable (struct varobj *parent);
-
-static char *cplus_name_of_child (struct varobj *parent, int index);
-
-static char *cplus_path_expr_of_child (struct varobj *child);
-
-static struct value *cplus_value_of_root (struct varobj **var_handle);
-
-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 *cplus_value_of_variable (struct varobj *var,
- enum varobj_display_formats format);
-
-/* Java implementation */
-
-static int java_number_of_children (struct varobj *var);
-
-static char *java_name_of_variable (struct varobj *parent);
-
-static char *java_name_of_child (struct varobj *parent, int index);
-
-static char *java_path_expr_of_child (struct varobj *child);
-
-static struct value *java_value_of_root (struct varobj **var_handle);
-
-static struct value *java_value_of_child (struct varobj *parent, int index);
-
-static struct type *java_type_of_child (struct varobj *parent, int index);
-
-static char *java_value_of_variable (struct varobj *var,
- enum varobj_display_formats format);
-
-/* Ada implementation */
-
-static int ada_number_of_children (struct varobj *var);
-
-static char *ada_name_of_variable (struct varobj *parent);
-
-static char *ada_name_of_child (struct varobj *parent, int index);
-
-static char *ada_path_expr_of_child (struct varobj *child);
-
-static struct value *ada_value_of_root (struct varobj **var_handle);
-
-static struct value *ada_value_of_child (struct varobj *parent, int index);
-
-static struct type *ada_type_of_child (struct varobj *parent, int index);
-
-static char *ada_value_of_variable (struct varobj *var,
- enum varobj_display_formats format);
-
-/* The language specific vector */
-
-struct language_specific
-{
-
- /* The language of this variable. */
- enum varobj_languages language;
-
- /* 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 of the INDEX'th child of PARENT. */
- char *(*name_of_child) (struct varobj * parent, int index);
-
- /* Returns the rooted expression of CHILD, which is a variable
- obtain that has some parent. */
- char *(*path_expr_of_child) (struct varobj * child);
-
- /* The ``struct value *'' of the root variable ROOT. */
- struct value *(*value_of_root) (struct varobj ** root_handle);
-
- /* 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 current value of VAR. */
- char *(*value_of_variable) (struct varobj * var,
- enum varobj_display_formats format);
-};
-
-/* Array of known source language routines. */
-static struct language_specific languages[vlang_end] = {
- /* Unknown (try treating as C). */
- {
- vlang_unknown,
- c_number_of_children,
- c_name_of_variable,
- c_name_of_child,
- c_path_expr_of_child,
- c_value_of_root,
- c_value_of_child,
- c_type_of_child,
- c_value_of_variable}
- ,
- /* C */
- {
- vlang_c,
- c_number_of_children,
- c_name_of_variable,
- c_name_of_child,
- c_path_expr_of_child,
- c_value_of_root,
- c_value_of_child,
- c_type_of_child,
- c_value_of_variable}
- ,
- /* C++ */
- {
- vlang_cplus,
- cplus_number_of_children,
- cplus_name_of_variable,
- cplus_name_of_child,
- cplus_path_expr_of_child,
- cplus_value_of_root,
- cplus_value_of_child,
- cplus_type_of_child,
- cplus_value_of_variable}
- ,
- /* Java */
- {
- vlang_java,
- java_number_of_children,
- java_name_of_variable,
- java_name_of_child,
- java_path_expr_of_child,
- java_value_of_root,
- java_value_of_child,
- java_type_of_child,
- java_value_of_variable},
- /* Ada */
- {
- vlang_ada,
- ada_number_of_children,
- ada_name_of_variable,
- ada_name_of_child,
- ada_path_expr_of_child,
- ada_value_of_root,
- ada_value_of_child,
- ada_type_of_child,
- ada_value_of_variable}
-};
-
-/* A little convenience enum for dealing with C++/Java. */
-enum vsections
-{
- v_public = 0, v_private, v_protected
-};
-
/* Private data */
/* Mappings of varobj_display_formats enums to gdb's format codes. */
/* Pointer to the varobj hash table (built at run time). */
static struct vlist **varobj_table;
-/* Is the variable X one of our "fake" children? */
-#define CPLUS_FAKE_CHILD(x) \
-((x) != NULL && (x)->type == NULL && (x)->value == NULL)
\f
/* API Implementation */
#ifdef HAVE_PYTHON
/* Helper function to install a Python environment suitable for
use during operations on VAR. */
-struct cleanup *
+static struct cleanup *
varobj_ensure_python_env (struct varobj *var)
{
return ensure_python_env (var->root->exp->gdbarch,
struct frame_info *fi;
struct frame_id old_id = null_frame_id;
struct block *block;
- char *p;
- enum varobj_languages lang;
+ const char *p;
struct value *value = NULL;
volatile struct gdb_exception except;
+ CORE_ADDR pc;
/* Parse and evaluate the expression, filling in as much of the
variable's data as possible. */
if (type == USE_SELECTED_FRAME)
var->root->floating = 1;
+ pc = 0;
block = NULL;
if (fi != NULL)
- block = get_frame_block (fi, 0);
+ {
+ block = get_frame_block (fi, 0);
+ pc = get_frame_pc (fi);
+ }
p = expression;
innermost_block = NULL;
return a sensible error. */
TRY_CATCH (except, RETURN_MASK_ERROR)
{
- var->root->exp = parse_exp_1 (&p, block, 0);
+ var->root->exp = parse_exp_1 (&p, pc, block, 0);
}
if (except.reason < 0)
}
/* Don't allow variables to be created for types. */
- if (var->root->exp->elts[0].opcode == OP_TYPE)
+ if (var->root->exp->elts[0].opcode == OP_TYPE
+ || var->root->exp->elts[0].opcode == OP_TYPEOF
+ || var->root->exp->elts[0].opcode == OP_DECLTYPE)
{
do_cleanups (old_chain);
fprintf_unfiltered (gdb_stderr, "Attempt to use a type name"
var->type = value_type (type_only_value);
}
- else
- var->type = value_type (value);
+ else
+ {
+ int real_type_found = 0;
- install_new_value (var, value, 1 /* Initial assignment */);
+ 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);
- var->root->lang = &languages[lang];
+ var->root->lang_ops = var->root->exp->language_defn->la_varobj_ops;
+
+ install_new_value (var, value, 1 /* Initial assignment */);
/* Set ourselves as our root. */
var->root->rootvar = var;
&& var->value && !value_lazy (var->value))
{
xfree (var->print_value);
- var->print_value = value_get_print_value (var->value, var->format, var);
+ var->print_value = varobj_value_get_print_value (var->value,
+ var->format, var);
}
return var->format;
char *result = NULL;
#if HAVE_PYTHON
- struct cleanup *back_to = varobj_ensure_python_env (var);
+ struct cleanup *back_to;
+
+ if (!gdb_python_initialized)
+ return NULL;
- if (var->pretty_printer)
- result = gdbpy_get_display_hint (var->pretty_printer);
+ back_to = varobj_ensure_python_env (var);
+
+ if (var->dynamic->pretty_printer != NULL)
+ result = gdbpy_get_display_hint (var->dynamic->pretty_printer);
do_cleanups (back_to);
#endif
if (VEC_length (varobj_p, var->children) > to)
return 1;
return ((to == -1 || VEC_length (varobj_p, var->children) == to)
- && var->saved_item != NULL);
+ && (var->dynamic->saved_item != NULL));
}
/* If the variable object is bound to a specific thread, that
of FROM and TO -- if either is negative, the entire range is
used. */
-static void
-restrict_range (VEC (varobj_p) *children, int *from, int *to)
+void
+varobj_restrict_range (VEC (varobj_p) *children, int *from, int *to)
{
if (*from < 0 || *to < 0)
{
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,
int index,
- const char *name,
+ char *name,
struct value *value)
{
if (VEC_length (varobj_p, var->children) < index + 1)
*cchanged = 1;
}
}
- else
+ else
{
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);
}
}
dynamic_varobj_has_child_method (struct varobj *var)
{
struct cleanup *back_to;
- PyObject *printer = var->pretty_printer;
+ PyObject *printer = var->dynamic->pretty_printer;
int result;
+ if (!gdb_python_initialized)
+ return 0;
+
back_to = varobj_ensure_python_env (var);
result = PyObject_HasAttr (printer, gdbpy_children_cst);
do_cleanups (back_to);
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,
struct cleanup *back_to;
PyObject *children;
int i;
- PyObject *printer = var->pretty_printer;
+ PyObject *printer = var->dynamic->pretty_printer;
+
+ if (!gdb_python_initialized)
+ return 0;
back_to = varobj_ensure_python_env (var);
return 0;
}
- if (update_children || !var->child_iter)
+ if (update_children || var->dynamic->child_iter == NULL)
{
children = PyObject_CallMethodObjArgs (printer, gdbpy_children_cst,
NULL);
make_cleanup_py_decref (children);
- if (!PyIter_Check (children))
- error (_("Returned value is not iterable"));
-
- Py_XDECREF (var->child_iter);
- var->child_iter = PyObject_GetIter (children);
- if (!var->child_iter)
+ Py_XDECREF (var->dynamic->child_iter);
+ var->dynamic->child_iter = PyObject_GetIter (children);
+ if (var->dynamic->child_iter == NULL)
{
gdbpy_print_stack ();
error (_("Could not get children iterator"));
}
- Py_XDECREF (var->saved_item);
- var->saved_item = NULL;
+ Py_XDECREF (var->dynamic->saved_item);
+ var->dynamic->saved_item = NULL;
i = 0;
}
int force_done = 0;
/* See if there was a leftover from last time. */
- if (var->saved_item)
+ if (var->dynamic->saved_item)
{
- item = var->saved_item;
- var->saved_item = NULL;
+ item = var->dynamic->saved_item;
+ var->dynamic->saved_item = NULL;
}
else
- item = PyIter_Next (var->child_iter);
+ item = PyIter_Next (var->dynamic->child_iter);
if (!item)
{
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);
+ can_mention ? cchanged : NULL, i,
+ xstrdup (name), v);
do_cleanups (inner);
}
else
{
- Py_XDECREF (var->saved_item);
- var->saved_item = item;
+ Py_XDECREF (var->dynamic->saved_item);
+ var->dynamic->saved_item = item;
/* We want to truncate the child list just before this
element. */
return 1;
#else
- gdb_assert (0 && "should never be called if Python is not enabled");
+ gdb_assert_not_reached ("should never be called if Python is not enabled");
#endif
}
{
if (var->num_children == -1)
{
- if (var->pretty_printer)
+ if (var->dynamic->pretty_printer != NULL)
{
int dummy;
/* 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
char *name;
int i, children_changed;
- var->children_requested = 1;
+ var->dynamic->children_requested = 1;
- if (var->pretty_printer)
+ if (var->dynamic->pretty_printer != NULL)
{
/* 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);
- restrict_range (var->children, from, to);
+ update_dynamic_varobj_children (var, NULL, NULL, NULL, NULL,
+ &children_changed, 0, 0, *to);
+ varobj_restrict_range (var->children, from, to);
return var->children;
}
}
}
- restrict_range (var->children, from, to);
+ varobj_restrict_range (var->children, from, to);
return var->children;
}
#if HAVE_PYTHON
static struct varobj *
-varobj_add_child (struct varobj *var, const char *name, struct value *value)
+varobj_add_child (struct varobj *var, char *name, struct value *value)
{
varobj_p v = create_child_with_value (var,
VEC_length (varobj_p, var->children),
char *
varobj_get_type (struct varobj *var)
{
- /* For the "fake" variables, do not return a type. (It's type is
+ /* For the "fake" variables, do not return a type. (Its type is
NULL, too.)
Do not return a type for invalid variables as well. */
if (CPLUS_FAKE_CHILD (var) || !var->root->is_valid)
return var->type;
}
+/* Is VAR a path expression parent, i.e., can it be used to construct
+ a valid path expression? */
+
+static int
+is_path_expr_parent (struct varobj *var)
+{
+ struct type *type;
+
+ /* "Fake" children are not path_expr parents. */
+ if (CPLUS_FAKE_CHILD (var))
+ return 0;
+
+ type = varobj_get_value_type (var);
+
+ /* Anonymous unions and structs are also not path_expr parents. */
+ return !((TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION)
+ && TYPE_NAME (type) == NULL);
+}
+
+/* Return the path expression parent for VAR. */
+
+struct varobj *
+varobj_get_path_expr_parent (struct varobj *var)
+{
+ struct varobj *parent = var;
+
+ while (!is_root_p (parent) && !is_path_expr_parent (parent))
+ parent = parent->parent;
+
+ return parent;
+}
+
/* Return a pointer to the full rooted expression of varobj VAR.
If it has not been computed yet, compute it. */
char *
when creating varobj, so here it should be
child varobj. */
gdb_assert (!is_root_p (var));
- return (*var->root->lang->path_expr_of_child) (var);
+ return (*var->root->lang_ops->path_expr_of_child) (var);
}
}
-enum varobj_languages
+const struct language_defn *
varobj_get_language (struct varobj *var)
{
- return variable_language (var);
+ return var->root->exp->language_defn;
}
int
int
varobj_pretty_printed_p (struct varobj *var)
{
- return var->pretty_printer != NULL;
+ return var->dynamic->pretty_printer != NULL;
}
char *
struct expression *exp;
struct value *value = NULL; /* Initialize to keep gcc happy. */
int saved_input_radix = input_radix;
- char *s = expression;
+ const char *s = expression;
volatile struct gdb_exception except;
gdb_assert (varobj_editable_p (var));
input_radix = 10; /* ALWAYS reset to decimal temporarily. */
- exp = parse_exp_1 (&s, 0, 0);
+ exp = parse_exp_1 (&s, 0, 0, 0);
TRY_CATCH (except, RETURN_MASK_ERROR)
{
value = evaluate_expression (exp);
#if HAVE_PYTHON
/* A helper function to install a constructor function and visualizer
- in a varobj. */
+ in a varobj_dynamic. */
static void
-install_visualizer (struct varobj *var, PyObject *constructor,
+install_visualizer (struct varobj_dynamic *var, PyObject *constructor,
PyObject *visualizer)
{
Py_XDECREF (var->constructor);
pretty_printer = NULL;
}
- install_visualizer (var, NULL, pretty_printer);
+ install_visualizer (var->dynamic, NULL, pretty_printer);
}
}
}
}
- install_visualizer (var, constructor, pretty_printer);
+ install_visualizer (var->dynamic, constructor, pretty_printer);
}
#endif /* HAVE_PYTHON */
#if HAVE_PYTHON
/* If the constructor is None, then we want the raw value. If VAR
does not have a value, just skip this. */
- if (var->constructor != Py_None && var->value)
+ if (!gdb_python_initialized)
+ return;
+
+ if (var->dynamic->constructor != Py_None && var->value != NULL)
{
struct cleanup *cleanup;
cleanup = varobj_ensure_python_env (var);
- if (!var->constructor)
+ if (var->dynamic->constructor == NULL)
install_default_visualizer (var);
else
- construct_visualizer (var, var->constructor);
+ construct_visualizer (var, var->dynamic->constructor);
do_cleanups (cleanup);
}
#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
/* If the type has custom visualizer, we consider it to be always
changeable. FIXME: need to make sure this behaviour will not
mess up read-sensitive values. */
- if (var->pretty_printer)
+ if (var->dynamic->pretty_printer != NULL)
changeable = 1;
need_to_fetch = changeable;
values. Don't get string rendering if the value is
lazy -- if it is, the code above has decided that the value
should not be fetched. */
- if (value && !value_lazy (value) && !var->pretty_printer)
- print_value = value_get_print_value (value, var->format, var);
+ if (value != NULL && !value_lazy (value)
+ && var->dynamic->pretty_printer == NULL)
+ print_value = varobj_value_get_print_value (value, var->format, var);
/* If the type is changeable, compare the old and the new values.
If this is the initial assignment, we don't have any old value
{
changed = 1;
}
- else if (! var->pretty_printer)
+ else if (var->dynamic->pretty_printer == NULL)
{
/* Try to compare the values. That requires that both
values are non-lazy. */
/* If we installed a pretty-printer, re-compare the printed version
to see if the variable changed. */
- if (var->pretty_printer)
+ if (var->dynamic->pretty_printer != NULL)
{
xfree (print_value);
- print_value = value_get_print_value (var->value, var->format, var);
+ print_value = varobj_value_get_print_value (var->value, var->format,
+ var);
if ((var->print_value == NULL && print_value != NULL)
|| (var->print_value != NULL && print_value == NULL)
|| (var->print_value != NULL && print_value != NULL
PyObject *mainmod, *globals, *constructor;
struct cleanup *back_to;
+ if (!gdb_python_initialized)
+ return;
+
back_to = varobj_ensure_python_env (var);
mainmod = PyImport_AddModule ("__main__");
#endif
}
+/* If NEW_VALUE is the new value of the given varobj (var), return
+ non-zero if var has mutated. In other words, if the type of
+ the new value is different from the type of the varobj's old
+ value.
+
+ NEW_VALUE may be NULL, if the varobj is now out of scope. */
+
+static int
+varobj_value_has_mutated (struct varobj *var, struct value *new_value,
+ struct type *new_type)
+{
+ /* If we haven't previously computed the number of children in var,
+ it does not matter from the front-end's perspective whether
+ the type has mutated or not. For all intents and purposes,
+ it has not mutated. */
+ if (var->num_children < 0)
+ return 0;
+
+ if (var->root->lang_ops->value_has_mutated)
+ return var->root->lang_ops->value_has_mutated (var, new_value, new_type);
+ else
+ return 0;
+}
+
/* Update the values for a variable and its children. This is a
two-pronged attack. First, re-parse the value for the root's
expression to see if it's changed. Then go all the way
VEC(varobj_update_result) *
varobj_update (struct varobj **varp, int explicit)
{
- int changed = 0;
int type_changed = 0;
int i;
struct value *new;
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;
/* Update this variable, unless it's a root, which is already
updated. */
if (!r.value_installed)
- {
+ {
+ struct type *new_type;
+
new = value_of_child (v->parent, v->index);
- if (install_new_value (v, new, 0 /* type not changed */))
+ if (update_type_if_necessary(v, new))
+ r.type_changed = 1;
+ if (new)
+ new_type = value_type (new);
+ else
+ new_type = v->root->lang_ops->type_of_child (v->parent, v->index);
+
+ if (varobj_value_has_mutated (v, new, new_type))
+ {
+ /* The children are no longer valid; delete them now.
+ Report the fact that its type changed as well. */
+ varobj_delete (v, NULL, 1 /* only_children */);
+ v->num_children = -1;
+ v->to = -1;
+ v->from = -1;
+ v->type = new_type;
+ r.type_changed = 1;
+ }
+
+ if (install_new_value (v, new, r.type_changed))
{
r.changed = 1;
v->updated = 0;
/* We probably should not get children of a varobj that has a
pretty-printer, but for which -var-list-children was never
invoked. */
- if (v->pretty_printer)
+ if (v->dynamic->pretty_printer != NULL)
{
- 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)
continue;
- if (!v->children_requested)
+ if (!v->dynamic->children_requested)
{
int dummy;
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;
}
static struct varobj *
-create_child_with_value (struct varobj *parent, int index, const char *name,
+create_child_with_value (struct varobj *parent, int index, char *name,
struct value *value)
{
struct varobj *child;
child = new_variable ();
- /* Name is allocated by name_of_child. */
- /* FIXME: xstrdup should not be here. */
- child->name = xstrdup (name);
+ /* NAME is allocated by caller. */
+ child->name = name;
child->index = index;
child->parent = parent;
child->root = parent->root;
- childs_name = xstrprintf ("%s.%s", parent->obj_name, name);
+
+ if (varobj_is_anonymous_child (child))
+ childs_name = xstrprintf ("%s.%d_anonymous", parent->obj_name, index);
+ else
+ childs_name = xstrprintf ("%s.%s", parent->obj_name, name);
child->obj_name = childs_name;
+
install_variable (child);
/* Compute the type of the child. Must do this before
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,
- child->index);
+ child->type = (*child->root->lang_ops->type_of_child) (child->parent,
+ child->index);
install_new_value (child, value, 1);
return child;
var->print_value = NULL;
var->frozen = 0;
var->not_fetched = 0;
- var->children_requested = 0;
+ var->dynamic
+ = (struct varobj_dynamic *) xmalloc (sizeof (struct varobj_dynamic));
+ var->dynamic->children_requested = 0;
var->from = -1;
var->to = -1;
- var->constructor = 0;
- var->pretty_printer = 0;
- var->child_iter = 0;
- var->saved_item = 0;
+ var->dynamic->constructor = 0;
+ var->dynamic->pretty_printer = 0;
+ var->dynamic->child_iter = 0;
+ var->dynamic->saved_item = 0;
return var;
}
struct varobj *var = new_variable ();
var->root = (struct varobj_root *) xmalloc (sizeof (struct varobj_root));
- var->root->lang = NULL;
+ var->root->lang_ops = NULL;
var->root->exp = NULL;
var->root->valid_block = NULL;
var->root->frame = null_frame_id;
free_variable (struct varobj *var)
{
#if HAVE_PYTHON
- if (var->pretty_printer)
+ if (var->dynamic->pretty_printer != NULL)
{
struct cleanup *cleanup = varobj_ensure_python_env (var);
- Py_XDECREF (var->constructor);
- Py_XDECREF (var->pretty_printer);
- Py_XDECREF (var->child_iter);
- Py_XDECREF (var->saved_item);
+
+ Py_XDECREF (var->dynamic->constructor);
+ Py_XDECREF (var->dynamic->pretty_printer);
+ Py_XDECREF (var->dynamic->child_iter);
+ Py_XDECREF (var->dynamic->saved_item);
do_cleanups (cleanup);
}
#endif
xfree (var->obj_name);
xfree (var->print_value);
xfree (var->path_expr);
+ xfree (var->dynamic);
xfree (var);
}
return make_cleanup (do_free_variable_cleanup, var);
}
-/* This returns the type of the variable. It also skips past typedefs
- to return the real type of the variable.
-
- 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)
-{
- struct type *type;
-
- type = var->type;
- if (type != NULL)
- type = check_typedef (type);
-
- return type;
-}
-
/* Return the type of the value that's stored in VAR,
or that would have being stored there if the
value were accessible.
the values and for comparing previous and new values.
For example, top-level references are always stripped. */
-static struct type *
-get_value_type (struct varobj *var)
+struct type *
+varobj_get_value_type (struct varobj *var)
{
struct type *type;
return type;
}
-/* This returns the target type (or NULL) of TYPE, also skipping
- 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)
-{
- if (type != NULL)
- {
- type = TYPE_TARGET_TYPE (type);
- if (type != NULL)
- type = check_typedef (type);
- }
-
- return type;
-}
-
/* What is the default display for this variable? We assume that
everything is "natural". Any exceptions? */
static enum varobj_display_formats
/* Common entry points */
-/* Get the language of variable VAR. */
-static enum varobj_languages
-variable_language (struct varobj *var)
-{
- enum varobj_languages lang;
-
- switch (var->root->exp->language_defn->la_language)
- {
- default:
- case language_c:
- lang = vlang_c;
- break;
- case language_cplus:
- lang = vlang_cplus;
- break;
- case language_java:
- lang = vlang_java;
- break;
- case language_ada:
- lang = vlang_ada;
- break;
- }
-
- return lang;
-}
-
/* Return the number of children for a given variable.
The result of this function is defined by the language
implementation. The number of children returned by this function
static int
number_of_children (struct varobj *var)
{
- return (*var->root->lang->number_of_children) (var);
+ return (*var->root->lang_ops->number_of_children) (var);
}
/* What is the expression for the root varobj VAR? Returns a malloc'd
static char *
name_of_variable (struct varobj *var)
{
- return (*var->root->lang->name_of_variable) (var);
+ return (*var->root->lang_ops->name_of_variable) (var);
}
/* What is the name of the INDEX'th child of VAR? Returns a malloc'd
static char *
name_of_child (struct varobj *var, int index)
{
- return (*var->root->lang->name_of_child) (var, index);
+ return (*var->root->lang_ops->name_of_child) (var, index);
}
-/* What is the ``struct value *'' of the root variable VAR?
- For floating variable object, evaluation can get us a value
- of different type from what is stored in varobj already. In
- that case:
- - *type_changed will be set to 1
- - old varobj will be freed, and new one will be
- created, with the same name.
- - *var_handle will be set to the new varobj
- Otherwise, *type_changed will be set to 0. */
-static struct value *
-value_of_root (struct varobj **var_handle, int *type_changed)
+/* If frame associated with VAR can be found, switch
+ to it and return 1. Otherwise, return 0. */
+
+static int
+check_scope (struct varobj *var)
{
- struct varobj *var;
+ struct frame_info *fi;
+ int scope;
- if (var_handle == NULL)
- return NULL;
+ fi = frame_find_by_id (var->root->frame);
+ scope = fi != NULL;
- var = *var_handle;
+ if (fi)
+ {
+ CORE_ADDR pc = get_frame_pc (fi);
- /* This should really be an exception, since this should
- only get called with a root variable. */
+ if (pc < BLOCK_START (var->root->valid_block) ||
+ pc >= BLOCK_END (var->root->valid_block))
+ scope = 0;
+ else
+ select_frame (fi);
+ }
+ return scope;
+}
- if (!is_root_p (var))
- return NULL;
+/* Helper function to value_of_root. */
- if (var->root->floating)
- {
- struct varobj *tmp_var;
- char *old_type, *new_type;
+static struct value *
+value_of_root_1 (struct varobj **var_handle)
+{
+ struct value *new_val = NULL;
+ struct varobj *var = *var_handle;
+ int within_scope = 0;
+ struct cleanup *back_to;
+
+ /* Only root variables can be updated... */
+ if (!is_root_p (var))
+ /* Not a root var. */
+ return NULL;
+
+ back_to = make_cleanup_restore_current_thread ();
+
+ /* Determine whether the variable is still around. */
+ if (var->root->valid_block == NULL || var->root->floating)
+ within_scope = 1;
+ else if (var->root->thread_id == 0)
+ {
+ /* The program was single-threaded when the variable object was
+ created. Technically, it's possible that the program became
+ multi-threaded since then, but we don't support such
+ scenario yet. */
+ within_scope = check_scope (var);
+ }
+ else
+ {
+ ptid_t ptid = thread_id_to_pid (var->root->thread_id);
+ if (in_thread_list (ptid))
+ {
+ switch_to_thread (ptid);
+ within_scope = check_scope (var);
+ }
+ }
+
+ if (within_scope)
+ {
+ volatile struct gdb_exception except;
+
+ /* We need to catch errors here, because if evaluate
+ expression fails we want to just return NULL. */
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ new_val = evaluate_expression (var->root->exp);
+ }
+ }
+
+ do_cleanups (back_to);
+
+ return new_val;
+}
+
+/* What is the ``struct value *'' of the root variable VAR?
+ For floating variable object, evaluation can get us a value
+ of different type from what is stored in varobj already. In
+ that case:
+ - *type_changed will be set to 1
+ - old varobj will be freed, and new one will be
+ created, with the same name.
+ - *var_handle will be set to the new varobj
+ Otherwise, *type_changed will be set to 0. */
+static struct value *
+value_of_root (struct varobj **var_handle, int *type_changed)
+{
+ struct varobj *var;
+
+ if (var_handle == NULL)
+ return NULL;
+
+ var = *var_handle;
+
+ /* This should really be an exception, since this should
+ only get called with a root variable. */
+
+ if (!is_root_p (var))
+ return NULL;
+
+ if (var->root->floating)
+ {
+ struct varobj *tmp_var;
+ char *old_type, *new_type;
tmp_var = varobj_create (NULL, var->name, (CORE_ADDR) 0,
USE_SELECTED_FRAME);
*type_changed = 0;
}
- return (*var->root->lang->value_of_root) (var_handle);
+ {
+ struct value *value;
+
+ value = value_of_root_1 (var_handle);
+ if (var->value == NULL || value == NULL)
+ {
+ /* For root varobj-s, a NULL value indicates a scoping issue.
+ So, nothing to do in terms of checking for mutations. */
+ }
+ else if (varobj_value_has_mutated (var, value, value_type (value)))
+ {
+ /* The type has mutated, so the children are no longer valid.
+ Just delete them, and tell our caller that the type has
+ changed. */
+ varobj_delete (var, NULL, 1 /* only_children */);
+ var->num_children = -1;
+ var->to = -1;
+ var->from = -1;
+ *type_changed = 1;
+ }
+ return value;
+ }
}
/* What is the ``struct value *'' for the INDEX'th child of PARENT? */
{
struct value *value;
- value = (*parent->root->lang->value_of_child) (parent, index);
+ value = (*parent->root->lang_ops->value_of_child) (parent, index);
return value;
}
{
if (var->root->is_valid)
{
- if (var->pretty_printer)
- return value_get_print_value (var->value, var->format, var);
- return (*var->root->lang->value_of_variable) (var, format);
+ if (var->dynamic->pretty_printer != NULL)
+ return varobj_value_get_print_value (var->value, var->format, var);
+ return (*var->root->lang_ops->value_of_variable) (var, format);
}
else
return NULL;
}
-static char *
-value_get_print_value (struct value *value, enum varobj_display_formats format,
- struct varobj *var)
+void
+varobj_formatted_print_options (struct value_print_options *opts,
+ enum varobj_display_formats format)
+{
+ get_formatted_print_options (opts, format_code[(int) format]);
+ opts->deref_ref = 0;
+ opts->raw = 1;
+}
+
+char *
+varobj_value_get_print_value (struct value *value,
+ enum varobj_display_formats format,
+ struct varobj *var)
{
struct ui_file *stb;
struct cleanup *old_chain;
- gdb_byte *thevalue = NULL;
+ char *thevalue = NULL;
struct value_print_options opts;
struct type *type = NULL;
long len = 0;
gdbarch = get_type_arch (value_type (value));
#if HAVE_PYTHON
- {
- PyObject *value_formatter = var->pretty_printer;
+ if (gdb_python_initialized)
+ {
+ PyObject *value_formatter = var->dynamic->pretty_printer;
- varobj_ensure_python_env (var);
+ varobj_ensure_python_env (var);
- if (value_formatter)
- {
- /* First check to see if we have any children at all. If so,
- we simply return {...}. */
- if (dynamic_varobj_has_child_method (var))
- {
- do_cleanups (old_chain);
- return xstrdup ("{...}");
- }
+ if (value_formatter)
+ {
+ /* First check to see if we have any children at all. If so,
+ we simply return {...}. */
+ if (dynamic_varobj_has_child_method (var))
+ {
+ do_cleanups (old_chain);
+ return xstrdup ("{...}");
+ }
- if (PyObject_HasAttr (value_formatter, gdbpy_to_string_cst))
- {
- struct value *replacement;
- PyObject *output = NULL;
-
- output = apply_varobj_pretty_printer (value_formatter,
- &replacement,
- stb);
-
- /* If we have string like output ... */
- if (output)
- {
- make_cleanup_py_decref (output);
-
- /* If this is a lazy string, extract it. For lazy
- strings we always print as a string, so set
- string_print. */
- if (gdbpy_is_lazy_string (output))
- {
- gdbpy_extract_lazy_string (output, &str_addr, &type,
- &len, &encoding);
- make_cleanup (free_current_contents, &encoding);
- string_print = 1;
- }
- else
- {
- /* If it is a regular (non-lazy) string, extract
- it and copy the contents into THEVALUE. If the
- hint says to print it as a string, set
- string_print. Otherwise just return the extracted
- string as a value. */
-
- PyObject *py_str
- = python_string_to_target_python_string (output);
-
- if (py_str)
- {
- char *s = PyString_AsString (py_str);
- char *hint;
-
- hint = gdbpy_get_display_hint (value_formatter);
- if (hint)
- {
- if (!strcmp (hint, "string"))
- string_print = 1;
- xfree (hint);
- }
-
- len = PyString_Size (py_str);
- thevalue = xmemdup (s, len + 1, len + 1);
- type = builtin_type (gdbarch)->builtin_char;
- Py_DECREF (py_str);
-
- if (!string_print)
- {
- do_cleanups (old_chain);
- return thevalue;
- }
-
- make_cleanup (xfree, thevalue);
- }
- else
- gdbpy_print_stack ();
- }
- }
- /* If the printer returned a replacement value, set VALUE
- to REPLACEMENT. If there is not a replacement value,
- just use the value passed to this function. */
- if (replacement)
- value = replacement;
- }
- }
- }
+ if (PyObject_HasAttr (value_formatter, gdbpy_to_string_cst))
+ {
+ struct value *replacement;
+ PyObject *output = NULL;
+
+ output = apply_varobj_pretty_printer (value_formatter,
+ &replacement,
+ stb);
+
+ /* If we have string like output ... */
+ if (output)
+ {
+ make_cleanup_py_decref (output);
+
+ /* If this is a lazy string, extract it. For lazy
+ strings we always print as a string, so set
+ string_print. */
+ if (gdbpy_is_lazy_string (output))
+ {
+ gdbpy_extract_lazy_string (output, &str_addr, &type,
+ &len, &encoding);
+ make_cleanup (free_current_contents, &encoding);
+ string_print = 1;
+ }
+ else
+ {
+ /* If it is a regular (non-lazy) string, extract
+ it and copy the contents into THEVALUE. If the
+ hint says to print it as a string, set
+ string_print. Otherwise just return the extracted
+ string as a value. */
+
+ char *s = python_string_to_target_string (output);
+
+ if (s)
+ {
+ char *hint;
+
+ hint = gdbpy_get_display_hint (value_formatter);
+ if (hint)
+ {
+ if (!strcmp (hint, "string"))
+ string_print = 1;
+ xfree (hint);
+ }
+
+ len = strlen (s);
+ thevalue = xmemdup (s, len + 1, len + 1);
+ type = builtin_type (gdbarch)->builtin_char;
+ xfree (s);
+
+ if (!string_print)
+ {
+ do_cleanups (old_chain);
+ return thevalue;
+ }
+
+ make_cleanup (xfree, thevalue);
+ }
+ else
+ gdbpy_print_stack ();
+ }
+ }
+ /* If the printer returned a replacement value, set VALUE
+ to REPLACEMENT. If there is not a replacement value,
+ just use the value passed to this function. */
+ if (replacement)
+ value = replacement;
+ }
+ }
+ }
#endif
- get_formatted_print_options (&opts, format_code[(int) format]);
- opts.deref_ref = 0;
- opts.raw = 1;
+ varobj_formatted_print_options (&opts, format);
/* If the THEVALUE has contents, it is a regular string. */
if (thevalue)
- LA_PRINT_STRING (stb, type, thevalue, len, encoding, 0, &opts);
+ LA_PRINT_STRING (stb, type, (gdb_byte *) thevalue, len, encoding, 0, &opts);
else if (string_print)
/* Otherwise, if string_print is set, and it is not a regular
string, it is a lazy string. */
if (!(var->root->is_valid && var->value && VALUE_LVAL (var->value)))
return 0;
- type = get_value_type (var);
+ type = varobj_get_value_type (var);
switch (TYPE_CODE (type))
{
}
}
-/* Return non-zero if changes in value of VAR
- must be detected and reported by -var-update.
- Return zero is -var-update should never report
- changes of such values. This makes sense for structures
- (since the changes in children values will be reported separately),
- or for artifical objects (like 'public' pseudo-field in C++).
+/* Call VAR's value_is_changeable_p language-specific callback. */
- Return value of 0 means that gdb need not call value_fetch_lazy
- for the value of this variable object. */
-static int
+int
varobj_value_is_changeable_p (struct varobj *var)
{
- int r;
- struct type *type;
-
- if (CPLUS_FAKE_CHILD (var))
- return 0;
-
- type = get_value_type (var);
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- case TYPE_CODE_ARRAY:
- r = 0;
- break;
-
- default:
- r = 1;
- }
-
- return r;
+ return var->root->lang_ops->value_is_changeable_p (var);
}
/* Return 1 if that varobj is floating, that is is always evaluated in the
return var->root->floating;
}
-/* Given the value and the type of a variable object,
- adjust the value and type to those necessary
- for getting children of the variable object.
- This includes dereferencing top-level references
- to all types and dereferencing pointers to
- structures.
+/* Implement the "value_is_changeable_p" varobj callback for most
+ languages. */
- 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
- value is not known.
-
- If WAS_PTR is not NULL, set *WAS_PTR to 0 or 1
- depending on whether pointer was dereferenced
- in this function. */
-static void
-adjust_value_for_child_access (struct value **value,
- struct type **type,
- int *was_ptr)
+int
+varobj_default_value_is_changeable_p (struct varobj *var)
{
- gdb_assert (type && *type);
-
- if (was_ptr)
- *was_ptr = 0;
-
- *type = check_typedef (*type);
-
- /* The type of value stored in varobj, that is passed
- to us, is already supposed to be
- reference-stripped. */
-
- gdb_assert (TYPE_CODE (*type) != TYPE_CODE_REF);
-
- /* Pointers to structures are treated just like
- structures when accessing children. Don't
- dererences pointers to other types. */
- if (TYPE_CODE (*type) == TYPE_CODE_PTR)
- {
- struct type *target_type = get_target_type (*type);
- if (TYPE_CODE (target_type) == TYPE_CODE_STRUCT
- || TYPE_CODE (target_type) == TYPE_CODE_UNION)
- {
- if (value && *value)
- {
- volatile struct gdb_exception except;
-
- TRY_CATCH (except, RETURN_MASK_ERROR)
- {
- *value = value_ind (*value);
- }
-
- if (except.reason < 0)
- *value = NULL;
- }
- *type = target_type;
- if (was_ptr)
- *was_ptr = 1;
- }
- }
-
- /* The 'get_target_type' function calls check_typedef on
- result, so we can immediately check type code. No
- need to call check_typedef here. */
-}
+ int r;
+ struct type *type;
-/* C */
-static int
-c_number_of_children (struct varobj *var)
-{
- struct type *type = get_value_type (var);
- int children = 0;
- struct type *target;
+ if (CPLUS_FAKE_CHILD (var))
+ return 0;
- adjust_value_for_child_access (NULL, &type, NULL);
- target = get_target_type (type);
+ type = varobj_get_value_type (var);
switch (TYPE_CODE (type))
{
- case TYPE_CODE_ARRAY:
- if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (target) > 0
- && !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
- children = TYPE_LENGTH (type) / TYPE_LENGTH (target);
- else
- /* If we don't know how many elements there are, don't display
- any. */
- children = 0;
- break;
-
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
- children = TYPE_NFIELDS (type);
- break;
-
- case TYPE_CODE_PTR:
- /* The type here is a pointer to non-struct. Typically, pointers
- have one child, except for function ptrs, which have no children,
- and except for void*, as we don't know what to show.
-
- We can show char* so we allow it to be dereferenced. If you decide
- to test for it, please mind that a little magic is necessary to
- properly identify it: char* has TYPE_CODE == TYPE_CODE_INT and
- TYPE_NAME == "char". */
- if (TYPE_CODE (target) == TYPE_CODE_FUNC
- || TYPE_CODE (target) == TYPE_CODE_VOID)
- children = 0;
- else
- children = 1;
+ case TYPE_CODE_ARRAY:
+ r = 0;
break;
default:
- /* Other types have no children. */
- break;
+ r = 1;
}
- return children;
-}
-
-static char *
-c_name_of_variable (struct varobj *parent)
-{
- return xstrdup (parent->name);
+ return r;
}
-/* Return the value of element TYPE_INDEX of a structure
- value VALUE. VALUE's type should be a structure,
- or union, or a typedef to struct/union.
+/* Iterate all the existing _root_ VAROBJs and call the FUNC callback for them
+ with an arbitrary caller supplied DATA pointer. */
- Returns NULL if getting the value fails. Never throws. */
-static struct value *
-value_struct_element_index (struct value *value, int type_index)
+void
+all_root_varobjs (void (*func) (struct varobj *var, void *data), void *data)
{
- struct value *result = NULL;
- volatile struct gdb_exception e;
- struct type *type = value_type (value);
-
- type = check_typedef (type);
+ struct varobj_root *var_root, *var_root_next;
- gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION);
+ /* Iterate "safely" - handle if the callee deletes its passed VAROBJ. */
- TRY_CATCH (e, RETURN_MASK_ERROR)
- {
- if (field_is_static (&TYPE_FIELD (type, type_index)))
- result = value_static_field (type, type_index);
- else
- result = value_primitive_field (value, 0, type_index, type);
- }
- if (e.reason < 0)
- {
- return NULL;
- }
- else
+ for (var_root = rootlist; var_root != NULL; var_root = var_root_next)
{
- return result;
- }
-}
-
-/* Obtain the information about child INDEX of the variable
- object PARENT.
- If CNAME is not null, sets *CNAME to the name of the child relative
- to the parent.
- If CVALUE is not null, sets *CVALUE to the value of the child.
- If CTYPE is not null, sets *CTYPE to the type of the child.
-
- If any of CNAME, CVALUE, or CTYPE is not null, but the corresponding
- information cannot be determined, set *CNAME, *CVALUE, or *CTYPE
- to NULL. */
-static void
-c_describe_child (struct varobj *parent, int index,
- char **cname, struct value **cvalue, struct type **ctype,
- char **cfull_expression)
-{
- struct value *value = parent->value;
- struct type *type = get_value_type (parent);
- char *parent_expression = NULL;
- int was_ptr;
- volatile struct gdb_exception except;
+ var_root_next = var_root->next;
- if (cname)
- *cname = NULL;
- if (cvalue)
- *cvalue = NULL;
- if (ctype)
- *ctype = NULL;
- if (cfull_expression)
- {
- *cfull_expression = NULL;
- parent_expression = varobj_get_path_expr (parent);
+ (*func) (var_root->rootvar, data);
}
- adjust_value_for_child_access (&value, &type, &was_ptr);
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_ARRAY:
- if (cname)
- *cname
- = xstrdup (int_string (index
- + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)),
- 10, 1, 0, 0));
-
- if (cvalue && value)
- {
- int real_index = index + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type));
-
- TRY_CATCH (except, RETURN_MASK_ERROR)
- {
- *cvalue = value_subscript (value, real_index);
- }
- }
-
- if (ctype)
- *ctype = get_target_type (type);
-
- if (cfull_expression)
- *cfull_expression =
- xstrprintf ("(%s)[%s]", parent_expression,
- int_string (index
- + TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)),
- 10, 1, 0, 0));
-
-
- break;
-
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- if (cname)
- *cname = xstrdup (TYPE_FIELD_NAME (type, index));
-
- if (cvalue && value)
- {
- /* For C, varobj index is the same as type index. */
- *cvalue = value_struct_element_index (value, index);
- }
-
- if (ctype)
- *ctype = TYPE_FIELD_TYPE (type, index);
-
- if (cfull_expression)
- {
- char *join = was_ptr ? "->" : ".";
-
- *cfull_expression = xstrprintf ("(%s)%s%s", parent_expression, join,
- TYPE_FIELD_NAME (type, index));
- }
-
- break;
-
- case TYPE_CODE_PTR:
- if (cname)
- *cname = xstrprintf ("*%s", parent->name);
-
- if (cvalue && value)
- {
- TRY_CATCH (except, RETURN_MASK_ERROR)
- {
- *cvalue = value_ind (value);
- }
+}
+\f
+extern void _initialize_varobj (void);
+void
+_initialize_varobj (void)
+{
+ int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE;
- if (except.reason < 0)
- *cvalue = NULL;
- }
+ varobj_table = xmalloc (sizeof_table);
+ memset (varobj_table, 0, sizeof_table);
- /* Don't use get_target_type because it calls
- check_typedef and here, we want to show the true
- declared type of the variable. */
- if (ctype)
- *ctype = TYPE_TARGET_TYPE (type);
+ add_setshow_zuinteger_cmd ("debugvarobj", class_maintenance,
+ &varobjdebug,
+ _("Set varobj debugging."),
+ _("Show varobj debugging."),
+ _("When non-zero, varobj debugging is enabled."),
+ NULL, show_varobjdebug,
+ &setlist, &showlist);
+}
- if (cfull_expression)
- *cfull_expression = xstrprintf ("*(%s)", parent_expression);
-
- break;
+/* Invalidate varobj VAR if it is tied to locals and re-create it if it is
+ defined on globals. It is a helper for varobj_invalidate.
- default:
- /* This should not happen. */
- if (cname)
- *cname = xstrdup ("???");
- if (cfull_expression)
- *cfull_expression = xstrdup ("???");
- /* Don't set value and type, we don't know then. */
- }
-}
-
-static char *
-c_name_of_child (struct varobj *parent, int index)
-{
- char *name;
-
- c_describe_child (parent, index, &name, NULL, NULL, NULL);
- return name;
-}
-
-static char *
-c_path_expr_of_child (struct varobj *child)
-{
- c_describe_child (child->parent, child->index, NULL, NULL, NULL,
- &child->path_expr);
- return child->path_expr;
-}
-
-/* If frame associated with VAR can be found, switch
- to it and return 1. Otherwise, return 0. */
-static int
-check_scope (struct varobj *var)
-{
- struct frame_info *fi;
- int scope;
-
- fi = frame_find_by_id (var->root->frame);
- scope = fi != NULL;
-
- if (fi)
- {
- CORE_ADDR pc = get_frame_pc (fi);
-
- if (pc < BLOCK_START (var->root->valid_block) ||
- pc >= BLOCK_END (var->root->valid_block))
- scope = 0;
- else
- select_frame (fi);
- }
- return scope;
-}
-
-static struct value *
-c_value_of_root (struct varobj **var_handle)
-{
- struct value *new_val = NULL;
- struct varobj *var = *var_handle;
- int within_scope = 0;
- struct cleanup *back_to;
-
- /* Only root variables can be updated... */
- if (!is_root_p (var))
- /* Not a root var. */
- return NULL;
-
- back_to = make_cleanup_restore_current_thread ();
-
- /* Determine whether the variable is still around. */
- if (var->root->valid_block == NULL || var->root->floating)
- within_scope = 1;
- else if (var->root->thread_id == 0)
- {
- /* The program was single-threaded when the variable object was
- created. Technically, it's possible that the program became
- multi-threaded since then, but we don't support such
- scenario yet. */
- within_scope = check_scope (var);
- }
- else
- {
- ptid_t ptid = thread_id_to_pid (var->root->thread_id);
- if (in_thread_list (ptid))
- {
- switch_to_thread (ptid);
- within_scope = check_scope (var);
- }
- }
-
- if (within_scope)
- {
- volatile struct gdb_exception except;
-
- /* We need to catch errors here, because if evaluate
- expression fails we want to just return NULL. */
- TRY_CATCH (except, RETURN_MASK_ERROR)
- {
- new_val = evaluate_expression (var->root->exp);
- }
-
- return new_val;
- }
-
- do_cleanups (back_to);
-
- return NULL;
-}
-
-static struct value *
-c_value_of_child (struct varobj *parent, int index)
-{
- struct value *value = NULL;
-
- c_describe_child (parent, index, NULL, &value, NULL, NULL);
- return value;
-}
-
-static struct type *
-c_type_of_child (struct varobj *parent, int index)
-{
- struct type *type = NULL;
-
- c_describe_child (parent, index, NULL, NULL, &type, NULL);
- return type;
-}
-
-static char *
-c_value_of_variable (struct varobj *var, enum varobj_display_formats format)
-{
- /* BOGUS: if val_print sees a struct/class, or a reference to one,
- it will print out its children instead of "{...}". So we need to
- catch that case explicitly. */
- struct type *type = get_type (var);
-
- /* If we have a custom formatter, return whatever string it has
- produced. */
- if (var->pretty_printer && var->print_value)
- return xstrdup (var->print_value);
-
- /* Strip top-level references. */
- while (TYPE_CODE (type) == TYPE_CODE_REF)
- type = check_typedef (TYPE_TARGET_TYPE (type));
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- return xstrdup ("{...}");
- /* break; */
-
- case TYPE_CODE_ARRAY:
- {
- char *number;
-
- number = xstrprintf ("[%d]", var->num_children);
- return (number);
- }
- /* break; */
-
- default:
- {
- 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
- {
- if (var->not_fetched && value_lazy (var->value))
- /* Frozen variable and no value yet. We don't
- implicitly fetch the value. MI response will
- use empty string for the value, which is OK. */
- return NULL;
-
- gdb_assert (varobj_value_is_changeable_p (var));
- gdb_assert (!value_lazy (var->value));
-
- /* If the specified format is the current one,
- we can reuse print_value. */
- if (format == var->format)
- return xstrdup (var->print_value);
- else
- return value_get_print_value (var->value, format, var);
- }
- }
- }
-}
-\f
-
-/* C++ */
-
-static int
-cplus_number_of_children (struct varobj *var)
-{
- struct type *type;
- int children, dont_know;
-
- dont_know = 1;
- children = 0;
-
- if (!CPLUS_FAKE_CHILD (var))
- {
- type = get_value_type (var);
- adjust_value_for_child_access (NULL, &type, NULL);
-
- if (((TYPE_CODE (type)) == TYPE_CODE_STRUCT) ||
- ((TYPE_CODE (type)) == TYPE_CODE_UNION))
- {
- int kids[3];
-
- cplus_class_num_children (type, kids);
- if (kids[v_public] != 0)
- children++;
- if (kids[v_private] != 0)
- children++;
- if (kids[v_protected] != 0)
- children++;
-
- /* Add any baseclasses. */
- children += TYPE_N_BASECLASSES (type);
- dont_know = 0;
-
- /* FIXME: save children in var. */
- }
- }
- else
- {
- int kids[3];
-
- type = get_value_type (var->parent);
- adjust_value_for_child_access (NULL, &type, NULL);
-
- cplus_class_num_children (type, kids);
- if (strcmp (var->name, "public") == 0)
- children = kids[v_public];
- else if (strcmp (var->name, "private") == 0)
- children = kids[v_private];
- else
- children = kids[v_protected];
- dont_know = 0;
- }
-
- if (dont_know)
- children = c_number_of_children (var);
-
- return children;
-}
-
-/* Compute # of public, private, and protected variables in this class.
- That means we need to descend into all baseclasses and find out
- how many are there, too. */
-static void
-cplus_class_num_children (struct type *type, int children[3])
-{
- int i, vptr_fieldno;
- struct type *basetype = NULL;
-
- children[v_public] = 0;
- children[v_private] = 0;
- children[v_protected] = 0;
-
- vptr_fieldno = get_vptr_fieldno (type, &basetype);
- for (i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++)
- {
- /* If we have a virtual table pointer, omit it. Even if virtual
- table pointers are not specifically marked in the debug info,
- they should be artificial. */
- if ((type == basetype && i == vptr_fieldno)
- || TYPE_FIELD_ARTIFICIAL (type, i))
- continue;
-
- if (TYPE_FIELD_PROTECTED (type, i))
- children[v_protected]++;
- else if (TYPE_FIELD_PRIVATE (type, i))
- children[v_private]++;
- else
- children[v_public]++;
- }
-}
-
-static char *
-cplus_name_of_variable (struct varobj *parent)
-{
- return c_name_of_variable (parent);
-}
-
-enum accessibility { private_field, protected_field, public_field };
-
-/* Check if field INDEX of TYPE has the specified accessibility.
- Return 0 if so and 1 otherwise. */
-static int
-match_accessibility (struct type *type, int index, enum accessibility acc)
-{
- if (acc == private_field && TYPE_FIELD_PRIVATE (type, index))
- return 1;
- else if (acc == protected_field && TYPE_FIELD_PROTECTED (type, index))
- return 1;
- else if (acc == public_field && !TYPE_FIELD_PRIVATE (type, index)
- && !TYPE_FIELD_PROTECTED (type, index))
- return 1;
- else
- return 0;
-}
-
-static void
-cplus_describe_child (struct varobj *parent, int index,
- char **cname, struct value **cvalue, struct type **ctype,
- char **cfull_expression)
-{
- struct value *value;
- struct type *type;
- int was_ptr;
- char *parent_expression = NULL;
-
- if (cname)
- *cname = NULL;
- if (cvalue)
- *cvalue = NULL;
- if (ctype)
- *ctype = 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 (parent->parent);
- }
- else
- {
- value = parent->value;
- type = get_value_type (parent);
- if (cfull_expression)
- parent_expression = varobj_get_path_expr (parent);
- }
-
- adjust_value_for_child_access (&value, &type, &was_ptr);
-
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION)
- {
- char *join = was_ptr ? "->" : ".";
-
- if (CPLUS_FAKE_CHILD (parent))
- {
- /* 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);
- enum accessibility acc = public_field;
- int vptr_fieldno;
- struct type *basetype = NULL;
-
- vptr_fieldno = get_vptr_fieldno (type, &basetype);
- if (strcmp (parent->name, "private") == 0)
- acc = private_field;
- else if (strcmp (parent->name, "protected") == 0)
- acc = protected_field;
-
- while (index >= 0)
- {
- if ((type == basetype && type_index == vptr_fieldno)
- || TYPE_FIELD_ARTIFICIAL (type, type_index))
- ; /* ignore vptr */
- else if (match_accessibility (type, type_index, acc))
- --index;
- ++type_index;
- }
- --type_index;
-
- if (cname)
- *cname = xstrdup (TYPE_FIELD_NAME (type, type_index));
-
- if (cvalue && value)
- *cvalue = value_struct_element_index (value, type_index);
-
- if (ctype)
- *ctype = TYPE_FIELD_TYPE (type, type_index);
-
- if (cfull_expression)
- *cfull_expression
- = xstrprintf ("((%s)%s%s)", parent_expression,
- join,
- TYPE_FIELD_NAME (type, type_index));
- }
- else if (index < TYPE_N_BASECLASSES (type))
- {
- /* This is a baseclass. */
- if (cname)
- *cname = xstrdup (TYPE_FIELD_NAME (type, index));
-
- if (cvalue && value)
- *cvalue = value_cast (TYPE_FIELD_TYPE (type, index), value);
-
- if (ctype)
- {
- *ctype = TYPE_FIELD_TYPE (type, index);
- }
-
- if (cfull_expression)
- {
- char *ptr = was_ptr ? "*" : "";
-
- /* Cast the parent to the base' type. Note that in gdb,
- expression like
- (Base1)d
- will create an lvalue, for all appearences, so we don't
- need to use more fancy:
- *(Base1*)(&d)
- construct.
-
- When we are in the scope of the base class or of one
- of its children, the type field name will be interpreted
- as a constructor, if it exists. Therefore, we must
- indicate that the name is a class name by using the
- 'class' keyword. See PR mi/11912 */
- *cfull_expression = xstrprintf ("(%s(class %s%s) %s)",
- ptr,
- TYPE_FIELD_NAME (type, index),
- ptr,
- parent_expression);
- }
- }
- else
- {
- char *access = NULL;
- int children[3];
-
- cplus_class_num_children (type, children);
-
- /* Everything beyond the baseclasses can
- 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)
- access = "public";
- else if (children[v_private] > 0)
- access = "private";
- else
- access = "protected";
- break;
- case 1:
- if (children[v_public] > 0)
- {
- if (children[v_private] > 0)
- access = "private";
- else
- access = "protected";
- }
- else if (children[v_private] > 0)
- access = "protected";
- break;
- case 2:
- /* Must be protected. */
- access = "protected";
- break;
- default:
- /* error! */
- break;
- }
-
- gdb_assert (access);
- if (cname)
- *cname = xstrdup (access);
-
- /* Value and type and full expression are null here. */
- }
- }
- else
- {
- c_describe_child (parent, index, cname, cvalue, ctype, cfull_expression);
- }
-}
-
-static char *
-cplus_name_of_child (struct varobj *parent, int index)
-{
- char *name = NULL;
-
- cplus_describe_child (parent, index, &name, NULL, NULL, NULL);
- return name;
-}
-
-static char *
-cplus_path_expr_of_child (struct varobj *child)
-{
- cplus_describe_child (child->parent, child->index, NULL, NULL, NULL,
- &child->path_expr);
- return child->path_expr;
-}
-
-static struct value *
-cplus_value_of_root (struct varobj **var_handle)
-{
- return c_value_of_root (var_handle);
-}
-
-static struct value *
-cplus_value_of_child (struct varobj *parent, int index)
-{
- struct value *value = NULL;
-
- cplus_describe_child (parent, index, NULL, &value, NULL, NULL);
- return value;
-}
-
-static struct type *
-cplus_type_of_child (struct varobj *parent, int index)
-{
- struct type *type = NULL;
-
- cplus_describe_child (parent, index, NULL, NULL, &type, NULL);
- return type;
-}
-
-static char *
-cplus_value_of_variable (struct varobj *var,
- enum varobj_display_formats format)
-{
-
- /* If we have one of our special types, don't print out
- any value. */
- if (CPLUS_FAKE_CHILD (var))
- return xstrdup ("");
-
- return c_value_of_variable (var, format);
-}
-\f
-/* Java */
-
-static int
-java_number_of_children (struct varobj *var)
-{
- return cplus_number_of_children (var);
-}
-
-static char *
-java_name_of_variable (struct varobj *parent)
-{
- char *p, *name;
-
- name = cplus_name_of_variable (parent);
- /* If the name has "-" in it, it is because we
- needed to escape periods in the name... */
- p = name;
-
- while (*p != '\000')
- {
- if (*p == '-')
- *p = '.';
- p++;
- }
-
- return name;
-}
-
-static char *
-java_name_of_child (struct varobj *parent, int index)
-{
- char *name, *p;
-
- name = cplus_name_of_child (parent, index);
- /* Escape any periods in the name... */
- p = name;
-
- while (*p != '\000')
- {
- if (*p == '.')
- *p = '-';
- p++;
- }
-
- return name;
-}
-
-static char *
-java_path_expr_of_child (struct varobj *child)
-{
- return NULL;
-}
-
-static struct value *
-java_value_of_root (struct varobj **var_handle)
-{
- return cplus_value_of_root (var_handle);
-}
-
-static struct value *
-java_value_of_child (struct varobj *parent, int index)
-{
- return cplus_value_of_child (parent, index);
-}
-
-static struct type *
-java_type_of_child (struct varobj *parent, int index)
-{
- return cplus_type_of_child (parent, index);
-}
-
-static char *
-java_value_of_variable (struct varobj *var, enum varobj_display_formats format)
-{
- return cplus_value_of_variable (var, format);
-}
-
-/* Ada specific callbacks for VAROBJs. */
-
-static int
-ada_number_of_children (struct varobj *var)
-{
- return c_number_of_children (var);
-}
-
-static char *
-ada_name_of_variable (struct varobj *parent)
-{
- return c_name_of_variable (parent);
-}
-
-static char *
-ada_name_of_child (struct varobj *parent, int index)
-{
- return c_name_of_child (parent, index);
-}
-
-static char*
-ada_path_expr_of_child (struct varobj *child)
-{
- return c_path_expr_of_child (child);
-}
-
-static struct value *
-ada_value_of_root (struct varobj **var_handle)
-{
- return c_value_of_root (var_handle);
-}
-
-static struct value *
-ada_value_of_child (struct varobj *parent, int index)
-{
- return c_value_of_child (parent, index);
-}
-
-static struct type *
-ada_type_of_child (struct varobj *parent, int index)
-{
- return c_type_of_child (parent, index);
-}
-
-static char *
-ada_value_of_variable (struct varobj *var, enum varobj_display_formats format)
-{
- return c_value_of_variable (var, format);
-}
-
-/* Iterate all the existing _root_ VAROBJs and call the FUNC callback for them
- with an arbitrary caller supplied DATA pointer. */
-
-void
-all_root_varobjs (void (*func) (struct varobj *var, void *data), void *data)
-{
- struct varobj_root *var_root, *var_root_next;
-
- /* Iterate "safely" - handle if the callee deletes its passed VAROBJ. */
-
- for (var_root = rootlist; var_root != NULL; var_root = var_root_next)
- {
- var_root_next = var_root->next;
-
- (*func) (var_root->rootvar, data);
- }
-}
-\f
-extern void _initialize_varobj (void);
-void
-_initialize_varobj (void)
-{
- int sizeof_table = sizeof (struct vlist *) * VAROBJ_TABLE_SIZE;
-
- varobj_table = xmalloc (sizeof_table);
- memset (varobj_table, 0, sizeof_table);
-
- add_setshow_zinteger_cmd ("debugvarobj", class_maintenance,
- &varobjdebug,
- _("Set varobj debugging."),
- _("Show varobj debugging."),
- _("When non-zero, varobj debugging is enabled."),
- NULL, show_varobjdebug,
- &setlist, &showlist);
-}
-
-/* Invalidate varobj VAR if it is tied to locals and re-create it if it is
- defined on globals. It is a helper for varobj_invalidate. */
+ This function is called after changing the symbol file, in this case the
+ pointers to "struct type" stored by the varobj are no longer valid. All
+ varobj must be either re-evaluated, or marked as invalid here. */
static void
varobj_invalidate_iter (struct varobj *var, void *unused)
{
- /* Floating varobjs are reparsed on each stop, so we don't care if the
- presently parsed expression refers to something that's gone. */
- if (var->root->floating)
- return;
-
- /* global var must be re-evaluated. */
- if (var->root->valid_block == NULL)
+ /* global and floating var must be re-evaluated. */
+ if (var->root->floating || var->root->valid_block == NULL)
{
struct varobj *tmp_var;