[PATCH v3 8/9] Use enum accessibility in types and member functions

[Tom Tromey <tromey@adacore.com>]

This changes nested types and member functions to use the new
'accessibility' enum, rather than separate private/protected flags.
This is done for consistency, but it also lets us simplify some other
code in the next patch.

Acked-By: Simon Marchi <simon.marchi@efficios.com>
Reviewed-by: Keith Seitz <keiths@redhat.com>
---
 gdb/dwarf2/read.c |  8 ++++----
 gdb/gdbtypes.h    | 27 ++++++++++++++-------------
 gdb/stabsread.c   |  4 ++--
 3 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index e52ca5b5b83..0d8c24ad5b1 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -11714,10 +11714,10 @@ dwarf2_add_type_defn (struct field_info *fip, struct die_info *die,
       /* The assumed value if neither private nor protected.  */
       break;
     case DW_ACCESS_private:
-      fp.is_private = 1;
+      fp.accessibility = accessibility::PRIVATE;
       break;
     case DW_ACCESS_protected:
-      fp.is_protected = 1;
+      fp.accessibility = accessibility::PROTECTED;
       break;
     }
 
@@ -12076,10 +12076,10 @@ dwarf2_add_member_fn (struct field_info *fip, struct die_info *die,
   switch (accessibility)
     {
     case DW_ACCESS_private:
-      fnp->is_private = 1;
+      fnp->accessibility = accessibility::PRIVATE;
       break;
     case DW_ACCESS_protected:
-      fnp->is_protected = 1;
+      fnp->accessibility = accessibility::PROTECTED;
       break;
     }
 
diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h
index bec69bdc3d1..d3c7a206b34 100644
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -1611,8 +1611,8 @@ struct fn_field
 
   unsigned int is_const:1;
   unsigned int is_volatile:1;
-  unsigned int is_private:1;
-  unsigned int is_protected:1;
+  /* Accessibility of the field.  */
+  ENUM_BITFIELD (accessibility) accessibility : 2;
   unsigned int is_artificial:1;
 
   /* * A stub method only has some fields valid (but they are enough
@@ -1657,11 +1657,8 @@ struct decl_field
 
   struct type *type;
 
-  /* * True if this field was declared protected, false otherwise.  */
-  unsigned int is_protected : 1;
-
-  /* * True if this field was declared private, false otherwise.  */
-  unsigned int is_private : 1;
+  /* Accessibility of the field.  */
+  ENUM_BITFIELD (accessibility) accessibility : 2;
 };
 
 /* * C++ language-specific information for TYPE_CODE_STRUCT and
@@ -1984,8 +1981,10 @@ extern void set_type_vptr_basetype (struct type *, struct type *);
 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
-#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
-#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
+#define TYPE_FN_FIELD_PRIVATE(thisfn, n) \
+  ((thisfn)[n].accessibility == accessibility::PRIVATE)
+#define TYPE_FN_FIELD_PROTECTED(thisfn, n) \
+  ((thisfn)[n].accessibility == accessibility::PROTECTED)
 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
@@ -2008,9 +2007,9 @@ extern void set_type_vptr_basetype (struct type *, struct type *);
 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
   TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
-  TYPE_TYPEDEF_FIELD (thistype, n).is_protected
+  (TYPE_TYPEDEF_FIELD (thistype, n).accessibility == accessibility::PROTECTED)
 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n)        \
-  TYPE_TYPEDEF_FIELD (thistype, n).is_private
+  (TYPE_TYPEDEF_FIELD (thistype, n).accessibility == accessibility::PRIVATE)
 
 #define TYPE_NESTED_TYPES_ARRAY(thistype)	\
   TYPE_CPLUS_SPECIFIC (thistype)->nested_types
@@ -2023,9 +2022,11 @@ extern void set_type_vptr_basetype (struct type *, struct type *);
 #define TYPE_NESTED_TYPES_COUNT(thistype) \
   TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
-  TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
+  (TYPE_NESTED_TYPES_FIELD (thistype, n).accessibility \
+   == accessibility::PROTECTED)
 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n)	\
-  TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
+  (TYPE_NESTED_TYPES_FIELD (thistype, n).accessibility \
+   == accessibility::PRIVATE)
 
 #define TYPE_IS_OPAQUE(thistype) \
   ((((thistype)->code () == TYPE_CODE_STRUCT) \
diff --git a/gdb/stabsread.c b/gdb/stabsread.c
index 334371c2e46..fbf11701337 100644
--- a/gdb/stabsread.c
+++ b/gdb/stabsread.c
@@ -2372,10 +2372,10 @@ read_member_functions (struct stab_field_info *fip, const char **pp,
 	  switch (*(*pp)++)
 	    {
 	    case VISIBILITY_PRIVATE:
-	      new_sublist->fn_field.is_private = 1;
+	      new_sublist->fn_field.accessibility = accessibility::PRIVATE;
 	      break;
 	    case VISIBILITY_PROTECTED:
-	      new_sublist->fn_field.is_protected = 1;
+	      new_sublist->fn_field.accessibility = accessibility::PROTECTED;
 	      break;
 	    }
 

-- 
2.40.1