mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
17a22718b1
All of gdb has been converted away from ensure_python_env and varobj_ensure_python_env now; so remove them. 2017-01-10 Tom Tromey <tom@tromey.com> * python/python.c (ensure_python_env, restore_python_env): Remove. * python/python-internal.h (ensure_python_env): Don't declare. * varobj.h (varobj_ensure_python_env): Don't declare. * varobj.c (varobj_ensure_python_env): Remove.
347 lines
12 KiB
C++
347 lines
12 KiB
C++
/* GDB variable objects API.
|
|
Copyright (C) 1999-2017 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
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef VAROBJ_H
|
|
#define VAROBJ_H 1
|
|
|
|
#include "symtab.h"
|
|
#include "gdbtypes.h"
|
|
#include "vec.h"
|
|
|
|
/* Enumeration for the format types */
|
|
enum varobj_display_formats
|
|
{
|
|
FORMAT_NATURAL, /* What gdb actually calls 'natural' */
|
|
FORMAT_BINARY, /* Binary display */
|
|
FORMAT_DECIMAL, /* Decimal display */
|
|
FORMAT_HEXADECIMAL, /* Hex display */
|
|
FORMAT_OCTAL, /* Octal display */
|
|
FORMAT_ZHEXADECIMAL /* Zero padded hexadecimal */
|
|
};
|
|
|
|
enum varobj_type
|
|
{
|
|
USE_SPECIFIED_FRAME, /* Use the frame passed to varobj_create. */
|
|
USE_CURRENT_FRAME, /* Use the current frame. */
|
|
USE_SELECTED_FRAME /* Always reevaluate in selected frame. */
|
|
};
|
|
|
|
/* Enumerator describing if a variable object is in scope. */
|
|
enum varobj_scope_status
|
|
{
|
|
VAROBJ_IN_SCOPE = 0, /* Varobj is scope, value available. */
|
|
VAROBJ_NOT_IN_SCOPE = 1, /* Varobj is not in scope, value not
|
|
available, but varobj can become in
|
|
scope later. */
|
|
VAROBJ_INVALID = 2, /* Varobj no longer has any value, and never
|
|
will. */
|
|
};
|
|
|
|
/* String representations of gdb's format codes (defined in varobj.c). */
|
|
extern char *varobj_format_string[];
|
|
|
|
/* Struct that describes a variable object instance. */
|
|
|
|
struct varobj;
|
|
|
|
typedef struct varobj *varobj_p;
|
|
DEF_VEC_P (varobj_p);
|
|
|
|
typedef struct varobj_update_result_t
|
|
{
|
|
struct varobj *varobj;
|
|
int type_changed;
|
|
int children_changed;
|
|
int changed;
|
|
enum varobj_scope_status status;
|
|
/* This variable is used internally by varobj_update to indicate if the
|
|
new value of varobj is already computed and installed, or has to
|
|
be yet installed. Don't use this outside varobj.c. */
|
|
int value_installed;
|
|
|
|
/* This will be non-NULL when new children were added to the varobj.
|
|
It lists the new children (which must necessarily come at the end
|
|
of the child list) added during an update. The caller is
|
|
responsible for freeing this vector. */
|
|
VEC (varobj_p) *newobj;
|
|
} varobj_update_result;
|
|
|
|
DEF_VEC_O (varobj_update_result);
|
|
|
|
struct varobj_root;
|
|
struct varobj_dynamic;
|
|
|
|
/* 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. */
|
|
struct varobj
|
|
{
|
|
/* 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". */
|
|
std::string name;
|
|
|
|
/* Expression for this child. Can be used to create a root variable
|
|
corresponding to this child. */
|
|
std::string path_expr;
|
|
|
|
/* The name for this variable's object. This is here for
|
|
convenience when constructing this object's children. */
|
|
std::string obj_name;
|
|
|
|
/* Index of this variable in its parent or -1. */
|
|
int index;
|
|
|
|
/* The type of this variable. This can be NULL
|
|
for artificial 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. */
|
|
const struct varobj *parent;
|
|
|
|
/* Children of this object. */
|
|
VEC (varobj_p) *children;
|
|
|
|
/* 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. */
|
|
std::string 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;
|
|
|
|
/* Dynamic part of varobj. */
|
|
struct varobj_dynamic *dynamic;
|
|
};
|
|
|
|
/* Is the variable X one of our "fake" children? */
|
|
#define CPLUS_FAKE_CHILD(x) \
|
|
((x) != NULL && (x)->type == NULL && (x)->value == NULL)
|
|
|
|
/* The language specific vector */
|
|
|
|
struct lang_varobj_ops
|
|
{
|
|
/* The number of children of PARENT. */
|
|
int (*number_of_children) (const struct varobj *parent);
|
|
|
|
/* The name (expression) of a root varobj. */
|
|
std::string (*name_of_variable) (const struct varobj *parent);
|
|
|
|
/* The name of the INDEX'th child of PARENT. */
|
|
std::string (*name_of_child) (const struct varobj *parent, int index);
|
|
|
|
/* Returns the rooted expression of CHILD, which is a variable
|
|
obtain that has some parent. */
|
|
std::string (*path_expr_of_child) (const struct varobj *child);
|
|
|
|
/* The ``struct value *'' of the INDEX'th child of PARENT. */
|
|
struct value *(*value_of_child) (const struct varobj *parent, int index);
|
|
|
|
/* The type of the INDEX'th child of PARENT. */
|
|
struct type *(*type_of_child) (const struct varobj *parent, int index);
|
|
|
|
/* The current value of VAR. */
|
|
std::string (*value_of_variable) (const struct varobj *var,
|
|
enum varobj_display_formats format);
|
|
|
|
/* Return non-zero if changes in value of VAR must be detected and
|
|
reported by -var-update. Return zero if -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 artificial objects (like 'public' pseudo-field in C++).
|
|
|
|
Return value of 0 means that gdb need not call value_fetch_lazy
|
|
for the value of this variable object. */
|
|
int (*value_is_changeable_p) (const struct varobj *var);
|
|
|
|
/* Return nonzero if the type of VAR has mutated.
|
|
|
|
VAR's value is still the varobj's previous value, while NEW_VALUE
|
|
is VAR's new value and NEW_TYPE is the var's new type. NEW_VALUE
|
|
may be NULL indicating that there is no value available (the varobj
|
|
may be out of scope, of may be the child of a null pointer, for
|
|
instance). NEW_TYPE, on the other hand, must never be NULL.
|
|
|
|
This function should also be able to assume that var's number of
|
|
children is set (not < 0).
|
|
|
|
Languages where types do not mutate can set this to NULL. */
|
|
int (*value_has_mutated) (const struct varobj *var, struct value *new_value,
|
|
struct type *new_type);
|
|
|
|
/* Return nonzero if VAR is a suitable path expression parent.
|
|
|
|
For C like languages with anonymous structures and unions an anonymous
|
|
structure or union is not a suitable parent. */
|
|
int (*is_path_expr_parent) (const struct varobj *var);
|
|
};
|
|
|
|
extern const struct lang_varobj_ops c_varobj_ops;
|
|
extern const struct lang_varobj_ops cplus_varobj_ops;
|
|
extern const struct lang_varobj_ops ada_varobj_ops;
|
|
|
|
#define default_varobj_ops c_varobj_ops
|
|
/* API functions */
|
|
|
|
extern struct varobj *varobj_create (const char *objname,
|
|
const char *expression, CORE_ADDR frame,
|
|
enum varobj_type type);
|
|
|
|
extern char *varobj_gen_name (void);
|
|
|
|
extern struct varobj *varobj_get_handle (const char *name);
|
|
|
|
extern const char *varobj_get_objname (const struct varobj *var);
|
|
|
|
extern std::string varobj_get_expression (const struct varobj *var);
|
|
|
|
/* Delete a varobj and all its children if only_children == 0, otherwise delete
|
|
only the children. Return the number of deleted variables. */
|
|
|
|
extern int varobj_delete (struct varobj *var, int only_children);
|
|
|
|
extern enum varobj_display_formats varobj_set_display_format (
|
|
struct varobj *var,
|
|
enum varobj_display_formats format);
|
|
|
|
extern enum varobj_display_formats varobj_get_display_format (
|
|
const struct varobj *var);
|
|
|
|
extern int varobj_get_thread_id (const struct varobj *var);
|
|
|
|
extern void varobj_set_frozen (struct varobj *var, int frozen);
|
|
|
|
extern int varobj_get_frozen (const struct varobj *var);
|
|
|
|
extern void varobj_get_child_range (const struct varobj *var, int *from,
|
|
int *to);
|
|
|
|
extern void varobj_set_child_range (struct varobj *var, int from, int to);
|
|
|
|
extern gdb::unique_xmalloc_ptr<char>
|
|
varobj_get_display_hint (const struct varobj *var);
|
|
|
|
extern int varobj_get_num_children (struct varobj *var);
|
|
|
|
/* Return the list of children of VAR. The returned vector should not
|
|
be modified in any way. FROM and TO are in/out parameters
|
|
indicating the range of children to return. If either *FROM or *TO
|
|
is less than zero on entry, then all children will be returned. On
|
|
return, *FROM and *TO will be updated to indicate the real range
|
|
that was returned. The resulting VEC will contain at least the
|
|
children from *FROM to just before *TO; it might contain more
|
|
children, depending on whether any more were available. */
|
|
extern VEC (varobj_p)* varobj_list_children (struct varobj *var,
|
|
int *from, int *to);
|
|
|
|
extern std::string varobj_get_type (struct varobj *var);
|
|
|
|
extern struct type *varobj_get_gdb_type (const struct varobj *var);
|
|
|
|
extern const char *varobj_get_path_expr (const struct varobj *var);
|
|
|
|
extern const struct language_defn *
|
|
varobj_get_language (const struct varobj *var);
|
|
|
|
extern int varobj_get_attributes (const struct varobj *var);
|
|
|
|
extern std::string
|
|
varobj_get_formatted_value (struct varobj *var,
|
|
enum varobj_display_formats format);
|
|
|
|
extern std::string varobj_get_value (struct varobj *var);
|
|
|
|
extern int varobj_set_value (struct varobj *var, const char *expression);
|
|
|
|
extern void all_root_varobjs (void (*func) (struct varobj *var, void *data),
|
|
void *data);
|
|
|
|
extern VEC(varobj_update_result) *varobj_update (struct varobj **varp,
|
|
int is_explicit);
|
|
|
|
extern void varobj_invalidate (void);
|
|
|
|
extern int varobj_editable_p (const struct varobj *var);
|
|
|
|
extern int varobj_floating_p (const struct varobj *var);
|
|
|
|
extern void varobj_set_visualizer (struct varobj *var,
|
|
const char *visualizer);
|
|
|
|
extern void varobj_enable_pretty_printing (void);
|
|
|
|
extern int varobj_has_more (const struct varobj *var, int to);
|
|
|
|
extern int varobj_is_dynamic_p (const struct varobj *var);
|
|
|
|
extern int varobj_default_value_is_changeable_p (const struct varobj *var);
|
|
extern int varobj_value_is_changeable_p (const struct varobj *var);
|
|
|
|
extern struct type *varobj_get_value_type (const struct varobj *var);
|
|
|
|
extern int varobj_is_anonymous_child (const struct varobj *child);
|
|
|
|
extern const struct varobj *
|
|
varobj_get_path_expr_parent (const struct varobj *var);
|
|
|
|
extern std::string
|
|
varobj_value_get_print_value (struct value *value,
|
|
enum varobj_display_formats format,
|
|
const struct varobj *var);
|
|
|
|
extern void varobj_formatted_print_options (struct value_print_options *opts,
|
|
enum varobj_display_formats format);
|
|
|
|
extern void varobj_restrict_range (VEC (varobj_p) *children, int *from,
|
|
int *to);
|
|
|
|
extern int varobj_default_is_path_expr_parent (const struct varobj *var);
|
|
|
|
#endif /* VAROBJ_H */
|