[src/trunk]: src/usr.bin/xlint/lint1 lint: clean up duplicate code in handlin...

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

details:   https://anonhg.NetBSD.org/src/rev/8bbcf49a5ac5
branches:  trunk
changeset: 982090:8bbcf49a5ac5
user:      rillig <rillig%NetBSD.org@localhost>
date:      Tue Mar 30 20:23:30 2021 +0000

description:
lint: clean up duplicate code in handling of initialization

No functional change.

diffstat:

 usr.bin/xlint/lint1/init.c |  62 +++++++++++++++++----------------------------
 1 files changed, 23 insertions(+), 39 deletions(-)

diffs (143 lines):

diff -r 6fe3d885ae1f -r 8bbcf49a5ac5 usr.bin/xlint/lint1/init.c
--- a/usr.bin/xlint/lint1/init.c        Tue Mar 30 20:03:14 2021 +0000
+++ b/usr.bin/xlint/lint1/init.c        Tue Mar 30 20:23:30 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: init.c,v 1.183 2021/03/30 16:07:07 rillig Exp $        */
+/*     $NetBSD: init.c,v 1.184 2021/03/30 20:23:30 rillig Exp $        */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -38,7 +38,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: init.c,v 1.183 2021/03/30 16:07:07 rillig Exp $");
+__RCSID("$NetBSD: init.c,v 1.184 2021/03/30 20:23:30 rillig Exp $");
 #endif
 
 #include <stdlib.h>
@@ -534,6 +534,9 @@
                next = dr->dr_next;
                designator_free(dr);
        }
+
+       dn->dn_head = NULL;
+       dn->dn_tail = NULL;
 }
 
 
@@ -587,21 +590,6 @@
 #define brace_level_debug(level) do { } while (false)
 #endif
 
-static void
-brace_level_remove_designation(struct brace_level *bl)
-{
-       struct designator *dr, *next;
-
-       for (dr = bl->bl_designation.dn_head; dr != NULL; dr = next) {
-               next = dr->dr_next;
-               designator_free(dr);
-       }
-
-       bl->bl_designation.dn_head = NULL;
-       bl->bl_designation.dn_tail = NULL;
-}
-
-
 static const type_t *
 brace_level_sub_type_struct_or_union(const struct brace_level *bl)
 {
@@ -847,11 +835,12 @@
        bl = in->in_brace_level;
        in->in_brace_level = bl->bl_enclosing;
        brace_level_free(bl);
+       bl = in->in_brace_level;
 
-       if (in->in_brace_level != NULL) {
-               brace_level_advance(in->in_brace_level);
-               brace_level_remove_designation(in->in_brace_level);
-       }
+       if (bl != NULL)
+               brace_level_advance(bl);
+       if (bl != NULL)
+               designation_reset(&bl->bl_designation);
 
        initialization_debug(in);
        debug_leave();
@@ -869,14 +858,6 @@
        designation_add(&in->in_brace_level->bl_designation, name, subscript);
 }
 
-static void
-initialization_remove_designation(struct initialization *in)
-{
-
-       if (in->in_brace_level != NULL)
-               brace_level_remove_designation(in->in_brace_level);
-}
-
 /*
  * An object with automatic storage duration that has a single initializer
  * expression without braces and is not an array is initialized by delegating
@@ -951,13 +932,14 @@
 static void
 initialization_expr(struct initialization *in, tnode_t *tn)
 {
+       struct brace_level *bl;
        const type_t *tp;
 
        if (in->in_err)
                return;
 
-       if (in->in_brace_level != NULL &&
-           in->in_brace_level->bl_omitted_braces)
+       bl = in->in_brace_level;
+       if (bl != NULL && bl->bl_omitted_braces)
                return;
 
        debug_enter();
@@ -969,13 +951,13 @@
        if (initialization_init_array_using_string(in, tn))
                goto advance;
 
-       if (in->in_brace_level != NULL)
-               brace_level_apply_designation(in->in_brace_level);
+       if (bl != NULL)
+               brace_level_apply_designation(bl);
        tp = initialization_sub_type(in);
        if (tp == NULL)
                goto done;
 
-       if (in->in_brace_level == NULL && !is_scalar(tp->t_tspec)) {
+       if (bl == NULL && !is_scalar(tp->t_tspec)) {
                /* {}-enclosed initializer required */
                error(181);
                goto done;
@@ -989,8 +971,8 @@
         */
        if (is_scalar(tn->tn_type->t_tspec) &&
            tp->t_tspec == ARRAY &&
-           in->in_brace_level != NULL) {
-               in->in_brace_level->bl_omitted_braces = true;
+           bl != NULL) {
+               bl->bl_omitted_braces = true;
                goto done;
        }
 
@@ -999,10 +981,12 @@
        check_init_expr(tp, in->in_sym, tn);
 
 advance:
-       if (in->in_brace_level != NULL)
-               brace_level_advance(in->in_brace_level);
+       if (bl != NULL)
+               brace_level_advance(bl);
 done:
-       initialization_remove_designation(in);
+       if (bl != NULL)
+               designation_reset(&bl->bl_designation);
+
        initialization_debug(in);
        debug_leave();
 }