/* GDB variable objects API.
- Copyright (C) 1999, 2000, 2001, 2005, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2015 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
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 */
+ 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_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) */
+/* String representations of gdb's format codes (defined in varobj.c). */
extern char *varobj_format_string[];
-/* Languages supported by this variable objects system. */
-enum varobj_languages
- {
- vlang_unknown = 0, vlang_c, vlang_cplus, vlang_java, vlang_end
- };
+/* Struct thar describes a variable object instance. */
-/* String representations of gdb's known languages (defined in varobj.c) */
-extern char *varobj_language_string[];
-
-/* Struct thar describes a variable object instance */
struct varobj;
typedef struct varobj *varobj_p;
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 */
+ 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) *new;
+ 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. 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. */
+ 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. */
+ 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;
+
+ /* 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. The returned value must be freed
+ by the caller. */
+ char *(*name_of_variable) (const struct varobj *parent);
+
+ /* The name of the INDEX'th child of PARENT. The returned value must be
+ freed by the caller. */
+ char *(*name_of_child) (const struct varobj *parent, int index);
+
+ /* Returns the rooted expression of CHILD, which is a variable
+ obtain that has some parent. The returned value must be freed by the
+ caller. */
+ char *(*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. The returned value must be freed by the
+ caller. */
+ char *(*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 artifical 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 java_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 (char *objname,
extern struct varobj *varobj_get_handle (char *name);
-extern char *varobj_get_objname (struct varobj *var);
+extern char *varobj_get_objname (const struct varobj *var);
-extern char *varobj_get_expression (struct varobj *var);
+extern char *varobj_get_expression (const struct varobj *var);
extern int varobj_delete (struct varobj *var, char ***dellist,
int only_children);
enum varobj_display_formats format);
extern enum varobj_display_formats varobj_get_display_format (
- struct varobj *var);
+ const struct varobj *var);
-extern int varobj_get_thread_id (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 (struct varobj *var);
+extern int varobj_get_frozen (const struct varobj *var);
-extern void varobj_get_child_range (struct varobj *var, int *from, int *to);
+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 char *varobj_get_display_hint (struct varobj *var);
+extern char *varobj_get_display_hint (const struct varobj *var);
extern int varobj_get_num_children (struct varobj *var);
extern char *varobj_get_type (struct varobj *var);
-extern struct type *varobj_get_gdb_type (struct varobj *var);
+extern struct type *varobj_get_gdb_type (const struct varobj *var);
-extern char *varobj_get_path_expr (struct varobj *var);
+extern char *varobj_get_path_expr (const struct varobj *var);
-extern enum varobj_languages varobj_get_language (struct varobj *var);
+extern const struct language_defn *
+ varobj_get_language (const struct varobj *var);
-extern int varobj_get_attributes (struct varobj *var);
+extern int varobj_get_attributes (const struct varobj *var);
extern char *varobj_get_formatted_value (struct varobj *var,
enum varobj_display_formats format);
void *data);
extern VEC(varobj_update_result) *varobj_update (struct varobj **varp,
- int explicit);
+ int is_explicit);
extern void varobj_invalidate (void);
-extern int varobj_editable_p (struct varobj *var);
+extern int varobj_editable_p (const struct varobj *var);
-extern int varobj_floating_p (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_set_visualizer (struct varobj *var,
+ const char *visualizer);
extern void varobj_enable_pretty_printing (void);
-extern int varobj_has_more (struct varobj *var, int to);
+extern int varobj_has_more (const struct varobj *var, int to);
+
+extern int varobj_is_dynamic_p (const struct varobj *var);
+
+extern struct cleanup *varobj_ensure_python_env (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 char *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_pretty_printed_p (struct varobj *var);
+extern int varobj_default_is_path_expr_parent (const struct varobj *var);
#endif /* VAROBJ_H */
projects / deliverable / binutils-gdb.git / blobdiff