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Strip interface tags from visible fields 

The following Ada type:

   type Circle is new Shape and Drawable with record
        Center : Point;
        Radius : Natural;
   end record;

...is displayed as follow in GDB:

 (gdb) ptype circle
 type = new classes.shape with record
     V51s: ada.tags.interface_tag;
     center: classes.point;
     radius: natural;
 end record

V51s is an internal field that is of no interest for the user. It should
not be displayed.

gdb/ChangeLog:

	* ada-lang.c (ada_is_interface_tag): New function.
	(ada_is_ignored_field): Add interface tags to the list
	of ignored fields.
This commit is contained in:
Jerome Guitton 2012-11-29 16:29:54 +00:00
parent b50d69b5aa
commit ac4a2da45d
2 changed files with 23 additions and 2 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2012-11-29 Jerome Guitton <guitton@adacore.com>
* ada-lang.c (ada_is_interface_tag): New function.
(ada_is_ignored_field): Add interface tags to the list
of ignored fields.
2012-11-29 Jerome Guitton <guitton@adacore.com>
* ada-lang.h (ada_tag_value_at_base_address): New function

19
gdb/ada-lang.c
View File

@ -5937,6 +5937,19 @@ ada_is_dispatch_table_ptr_type (struct type *type)
return (strcmp (name, "ada__tags__dispatch_table") == 0);
}
/* Return non-zero if TYPE is an interface tag. */
static int
ada_is_interface_tag (struct type *type)
{
const char *name = TYPE_NAME (type);
if (name == NULL)
return 0;
return (strcmp (name, "ada__tags__interface_tag") == 0);
}
/* True if field number FIELD_NUM in struct or union type TYPE is supposed
to be invisible to users. */
@ -5967,9 +5980,11 @@ ada_is_ignored_field (struct type *type, int field_num)
return 1;
}
/* If this is the dispatch table of a tagged type, then ignore. */
/* If this is the dispatch table of a tagged type or an interface tag,
then ignore. */
if (ada_is_tagged_type (type, 1)
&& ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num)))
&& (ada_is_dispatch_table_ptr_type (TYPE_FIELD_TYPE (type, field_num))
|| ada_is_interface_tag (TYPE_FIELD_TYPE (type, field_num))))
return 1;
/* Not a special field, so it should not be ignored. */