[src/trunk]: src/usr.bin/make make(1): migrate Lst_AtFront to Lst_PrependS

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

details:   https://anonhg.NetBSD.org/src/rev/86dc75efc131
branches:  trunk
changeset: 942970:86dc75efc131
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Aug 22 23:06:51 2020 +0000

description:
make(1): migrate Lst_AtFront to Lst_PrependS

This makes Lst_AtFront unused, as well as LstInsertBefore.

diffstat:

 usr.bin/make/dir.c |  11 +++++++----
 usr.bin/make/lst.c |  54 +++---------------------------------------------------
 2 files changed, 10 insertions(+), 55 deletions(-)

diffs (124 lines):

diff -r 980771332754 -r 86dc75efc131 usr.bin/make/dir.c
--- a/usr.bin/make/dir.c        Sat Aug 22 22:57:53 2020 +0000
+++ b/usr.bin/make/dir.c        Sat Aug 22 23:06:51 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dir.c,v 1.108 2020/08/22 22:57:53 rillig Exp $ */
+/*     $NetBSD: dir.c,v 1.109 2020/08/22 23:06:51 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -70,14 +70,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: dir.c,v 1.108 2020/08/22 22:57:53 rillig Exp $";
+static char rcsid[] = "$NetBSD: dir.c,v 1.109 2020/08/22 23:06:51 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)dir.c      8.2 (Berkeley) 1/2/94";
 #else
-__RCSID("$NetBSD: dir.c,v 1.108 2020/08/22 22:57:53 rillig Exp $");
+__RCSID("$NetBSD: dir.c,v 1.109 2020/08/22 23:06:51 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -1564,8 +1564,11 @@
        if (ln != NULL)
            return Lst_DatumS(ln);
        else {
+           /* XXX: It is wrong to increment the refCount if dotLast is not
+            * used afterwards. */
            dotLast->refCount += 1;
-           (void)Lst_AtFront(path, dotLast);
+           if (path != NULL)
+               Lst_PrependS(path, dotLast);
        }
     }
 
diff -r 980771332754 -r 86dc75efc131 usr.bin/make/lst.c
--- a/usr.bin/make/lst.c        Sat Aug 22 22:57:53 2020 +0000
+++ b/usr.bin/make/lst.c        Sat Aug 22 23:06:51 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: lst.c,v 1.35 2020/08/22 22:57:53 rillig Exp $ */
+/* $NetBSD: lst.c,v 1.36 2020/08/22 23:06:51 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -37,11 +37,11 @@
 #include "make.h"
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: lst.c,v 1.35 2020/08/22 22:57:53 rillig Exp $";
+static char rcsid[] = "$NetBSD: lst.c,v 1.36 2020/08/22 23:06:51 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: lst.c,v 1.35 2020/08/22 22:57:53 rillig Exp $");
+__RCSID("$NetBSD: lst.c,v 1.36 2020/08/22 23:06:51 rillig Exp $");
 #endif /* not lint */
 #endif
 
@@ -179,46 +179,6 @@
 
 /* Insert a new node with the given piece of data before the given node in the
  * given list. */
-static ReturnStatus
-LstInsertBefore(Lst list, LstNode node, void *datum)
-{
-    LstNode newNode;
-
-    /*
-     * check validity of arguments
-     */
-    if (LstIsValid(list) && (LstIsEmpty(list) && node == NULL))
-       goto ok;
-
-    if (!LstIsValid(list) || LstIsEmpty(list) || !LstNodeIsValid(node)) {
-       return FAILURE;
-    }
-
-    ok:
-    newNode = LstNodeNew(datum);
-
-    if (node == NULL) {
-       newNode->prev = newNode->next = NULL;
-       list->first = list->last = newNode;
-    } else {
-       newNode->prev = node->prev;
-       newNode->next = node;
-
-       if (newNode->prev != NULL) {
-           newNode->prev->next = newNode;
-       }
-       node->prev = newNode;
-
-       if (node == list->first) {
-           list->first = newNode;
-       }
-    }
-
-    return SUCCESS;
-}
-
-/* Insert a new node with the given piece of data before the given node in the
- * given list. */
 void
 Lst_InsertBeforeS(Lst list, LstNode node, void *datum)
 {
@@ -243,14 +203,6 @@
     }
 }
 
-/* Add a piece of data at the front of the given list. */
-ReturnStatus
-Lst_AtFront(Lst list, void *datum)
-{
-    LstNode front = Lst_First(list);
-    return LstInsertBefore(list, front, datum);
-}
-
 /* Add a piece of data at the start of the given list. */
 void
 Lst_PrependS(Lst list, void *datum)