[src/trunk]: src/usr.bin/xlint/lint1 lint: align grammar rules for enum-speci...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/639e48b8ef83
branches:  trunk
changeset: 984422:639e48b8ef83
user:      rillig <rillig%NetBSD.org@localhost>
date:      Tue Jul 06 17:52:04 2021 +0000

description:
lint: align grammar rules for enum-specifier with C99

No functional change.

diffstat:

 usr.bin/xlint/lint1/cgram.y |  38 ++++++++++++++++++--------------------
 1 files changed, 18 insertions(+), 20 deletions(-)

diffs (84 lines):

diff -r 2951101c32c7 -r 639e48b8ef83 usr.bin/xlint/lint1/cgram.y
--- a/usr.bin/xlint/lint1/cgram.y       Tue Jul 06 17:33:07 2021 +0000
+++ b/usr.bin/xlint/lint1/cgram.y       Tue Jul 06 17:52:04 2021 +0000
@@ -1,5 +1,5 @@
 %{
-/* $NetBSD: cgram.y,v 1.258 2021/07/06 16:02:44 rillig Exp $ */
+/* $NetBSD: cgram.y,v 1.259 2021/07/06 17:52:04 rillig Exp $ */
 
 /*
  * Copyright (c) 1996 Christopher G. Demetriou.  All Rights Reserved.
@@ -35,7 +35,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: cgram.y,v 1.258 2021/07/06 16:02:44 rillig Exp $");
+__RCSID("$NetBSD: cgram.y,v 1.259 2021/07/06 17:52:04 rillig Exp $");
 #endif
 
 #include <limits.h>
@@ -300,8 +300,7 @@
 %type  <y_tnode>       constant_expr
 %type  <y_tnode>       array_size
 %type  <y_sym>         enum_declaration
-%type  <y_sym>         enums_with_opt_comma
-%type  <y_sym>         enums
+%type  <y_sym>         enumerator_list
 %type  <y_sym>         enumerator
 %type  <y_sym>         enumeration_constant
 %type  <y_sym>         notype_direct_decl
@@ -964,7 +963,7 @@
        ;
 
 enum_declaration:
-         enum_decl_lbrace enums_with_opt_comma T_RBRACE {
+         enum_decl_lbrace enumerator_list enumerator_list_comma_opt T_RBRACE {
                $$ = $2;
          }
        ;
@@ -976,9 +975,19 @@
          }
        ;
 
-enums_with_opt_comma:
-         enums
-       | enums T_COMMA {
+enumerator_list:               /* C99 6.7.2.2 */
+         enumerator
+       | enumerator_list T_COMMA enumerator {
+               $$ = lnklst($1, $3);
+         }
+       | error {
+               $$ = NULL;
+         }
+       ;
+
+enumerator_list_comma_opt:
+         /* empty */
+       | T_COMMA {
                if (sflag) {
                        /* trailing ',' prohibited in enum declaration */
                        error(54);
@@ -986,21 +995,10 @@
                        /* trailing ',' prohibited in enum declaration */
                        c99ism(54);
                }
-               $$ = $1;
          }
        ;
 
-enums:
-         enumerator
-       | enums T_COMMA enumerator {
-               $$ = lnklst($1, $3);
-         }
-       | error {
-               $$ = NULL;
-         }
-       ;
-
-enumerator:
+enumerator:                    /* C99 6.7.2.2 */
          enumeration_constant {
                $$ = enumeration_constant($1, enumval, true);
          }