old-cross-binutils/gdb/jv-varobj.c
Simon Marchi b09e2c591f Constify some parameters in the varobj code
To make it clear that some functions should not modify the variable
object, this patch adds the const qualifier where it makes sense to some
struct varobj * parameters. Most getters should take a const pointer to
guarantee they don't modify the object.

Unfortunately, I couldn't add it to some callbacks (such as name_of_child).
In the C implementation, they call c_describe_child, which calls
varobj_get_path_expr. varobj_get_path_expr needs to modify the object in
order to cache the computed value. It therefore can't take a const
pointer, and it affects the whole call chain. I suppose that's where you
would use a "mutable" in C++.

I did that to make sure there was no other cases like the one fixed in
the previous patch. I don't think it can hurt.

gdb/ChangeLog:

	* ada-varobj.c (ada_number_of_children): Constify struct varobj *
	parameter.
	(ada_name_of_variable): Same.
	(ada_path_expr_of_child): Same.
	(ada_value_of_variable): Same.
	(ada_value_is_changeable_p): Same.
	(ada_value_has_mutated): Same.
	* c-varobj.c (varobj_is_anonymous_child): Same.
	(c_is_path_expr_parent): Same.
	(c_number_of_children): Same.
	(c_name_of_variable): Same.
	(c_path_expr_of_child): Same.
	(get_type): Same.
	(c_value_of_variable): Same.
	(cplus_number_of_children): Same.
	(cplus_name_of_variable): Same.
	(cplus_path_expr_of_child): Same.
	(cplus_value_of_variable): Same.
	* jv-varobj.c (java_number_of_children): Same.
	(java_name_of_variable): Same.
	(java_path_expr_of_child): Same.
	(java_value_of_variable): Same.
	* varobj.c (number_of_children): Same.
	(name_of_variable): Same.
	(is_root_p): Same.
	(varobj_ensure_python_env): Same.
	(varobj_get_objname): Same.
	(varobj_get_expression): Same.
	(varobj_get_display_format): Same.
	(varobj_get_display_hint): Same.
	(varobj_has_more): Same.
	(varobj_get_thread_id): Same.
	(varobj_get_frozen): Same.
	(dynamic_varobj_has_child_method): Same.
	(varobj_get_gdb_type): Same.
	(is_path_expr_parent): Same.
	(varobj_default_is_path_expr_parent): Same.
	(varobj_get_language): Same.
	(varobj_get_attributes): Same.
	(varobj_is_dynamic_p): Same.
	(varobj_get_child_range): Same.
	(varobj_value_has_mutated): Same.
	(varobj_get_value_type): Same.
	(number_of_children): Same.
	(name_of_variable): Same.
	(check_scope): Same.
	(varobj_editable_p): Same.
	(varobj_value_is_changeable_p): Same.
	(varobj_floating_p): Same.
	(varobj_default_value_is_changeable_p): Same.
	* varobj.h (struct lang_varobj_ops): Consitfy some struct varobj *
	parameters.
	(varobj_get_objname): Constify struct varobj * parameter.
	(varobj_get_expression): Same.
	(varobj_get_thread_id): Same.
	(varobj_get_frozen): Same.
	(varobj_get_child_range): Same.
	(varobj_get_display_hint): Same.
	(varobj_get_gdb_type): Same.
	(varobj_get_language): Same.
	(varobj_get_attributes): Same.
	(varobj_editable_p): Same.
	(varobj_floating_p): Same.
	(varobj_has_more): Same.
	(varobj_is_dynamic_p): Same.
	(varobj_ensure_python_env): Same.
	(varobj_default_value_is_changeable_p): Same.
	(varobj_value_is_changeable_p): Same.
	(varobj_get_value_type): Same.
	(varobj_is_anonymous_child): Same.
	(varobj_value_get_print_value): Same.
	(varobj_default_is_path_expr_parent): Same.
2015-01-30 15:07:15 -05:00

107 lines
2.4 KiB
C

/* varobj support for Java.
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
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/>. */
#include "defs.h"
#include "varobj.h"
/* Java */
static int
java_number_of_children (const struct varobj *var)
{
return cplus_varobj_ops.number_of_children (var);
}
static char *
java_name_of_variable (const struct varobj *parent)
{
char *p, *name;
name = cplus_varobj_ops.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_varobj_ops.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 (const struct varobj *child)
{
return NULL;
}
static struct value *
java_value_of_child (struct varobj *parent, int index)
{
return cplus_varobj_ops.value_of_child (parent, index);
}
static struct type *
java_type_of_child (struct varobj *parent, int index)
{
return cplus_varobj_ops.type_of_child (parent, index);
}
static char *
java_value_of_variable (const struct varobj *var,
enum varobj_display_formats format)
{
return cplus_varobj_ops.value_of_variable (var, format);
}
/* varobj operations for java. */
const struct lang_varobj_ops java_varobj_ops =
{
java_number_of_children,
java_name_of_variable,
java_name_of_child,
java_path_expr_of_child,
java_value_of_child,
java_type_of_child,
java_value_of_variable,
varobj_default_value_is_changeable_p,
NULL, /* value_has_mutated */
varobj_default_is_path_expr_parent
};