Change frame_filter_flags to use DEF_ENUM_FLAGS_TYPE

This changes frame_filter_flags to use DEF_ENUM_FLAGS_TYPE, and
updates all the uses.  It also changes the enum constants to use <<,
as suggested by Sergio.

ChangeLog
2018-02-26  Tom Tromey  <tom@tromey.com>

	* stack.c (backtrace_command_1): Update.
	* python/python-internal.h (gdbpy_apply_frame_filter): Change type
	of "flags".
	* python/py-framefilter.c (py_print_frame)
	(gdbpy_apply_frame_filter): Change type of "flags".
	* mi/mi-cmd-stack.c (mi_apply_ext_lang_frame_filter): Change type
	of "flags".
	(mi_cmd_stack_list_frames, mi_cmd_stack_list_locals)
	(mi_cmd_stack_list_args, mi_cmd_stack_list_variables): Update.
	* extension.h (enum frame_filter_flag): Rename from
	frame_filter_flags.
	(frame_filter_flags): Define using DEF_ENUM_FLAGS_TYPE.
	(apply_ext_lang_frame_filter): Change type of "flags".
	* extension.c (apply_ext_lang_frame_filter): Change type of
	"flags".
	* extension-priv.h (struct extension_language_ops)
	<apply_frame_filter>: Change type of "flags".

1 files changed, 10 insertions, 7 deletions

diff --git a/gdb/extension.h b/gdb/extension.h
index 7375d72..943792d 100644
--- a/gdb/extension.h
+++ b/gdb/extension.h
@@ -87,24 +87,26 @@ enum ext_lang_bt_status
 
 /* Flags to pass to apply_extlang_frame_filter.  */
 
-enum frame_filter_flags
+enum frame_filter_flag
   {
     /* Set this flag if frame level is to be printed.  */
-    PRINT_LEVEL = 1,
+    PRINT_LEVEL = 1 << 0,
 
     /* Set this flag if frame information is to be printed.  */
-    PRINT_FRAME_INFO = 2,
+    PRINT_FRAME_INFO = 1 << 1,
 
     /* Set this flag if frame arguments are to be printed.  */
-    PRINT_ARGS = 4,
+    PRINT_ARGS = 1 << 2,
 
     /* Set this flag if frame locals are to be printed.  */
-    PRINT_LOCALS = 8,
+    PRINT_LOCALS = 1 << 3,
 
     /* Set this flag if a "More frames" message is to be printed.  */
-    PRINT_MORE_FRAMES = 16,
+    PRINT_MORE_FRAMES = 1 << 4,
   };
 
+DEF_ENUM_FLAGS_TYPE (enum frame_filter_flag, frame_filter_flags);
+
 /* A choice of the different frame argument printing strategies that
    can occur in different cases of frame filter instantiation.  */
 
@@ -287,7 +289,8 @@ extern int apply_ext_lang_val_pretty_printer
    const struct language_defn *language);
 
 extern enum ext_lang_bt_status apply_ext_lang_frame_filter
-  (struct frame_info *frame, int flags, enum ext_lang_frame_args args_type,
+  (struct frame_info *frame, frame_filter_flags flags,
+   enum ext_lang_frame_args args_type,
    struct ui_out *out, int frame_low, int frame_high);
 
 extern void preserve_ext_lang_values (struct objfile *, htab_t copied_types);