[src/trunk]: src/usr.bin/make make(1): reduce indentation of ParseDirective

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

details:   https://anonhg.NetBSD.org/src/rev/3546ff31a745
branches:  trunk
changeset: 957849:3546ff31a745
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Dec 12 21:35:21 2020 +0000

description:
make(1): reduce indentation of ParseDirective

diffstat:

 usr.bin/make/parse.c |  84 +++++++++++++++++++++++++--------------------------
 1 files changed, 41 insertions(+), 43 deletions(-)

diffs (117 lines):

diff -r 04d865891c97 -r 3546ff31a745 usr.bin/make/parse.c
--- a/usr.bin/make/parse.c      Sat Dec 12 21:20:30 2020 +0000
+++ b/usr.bin/make/parse.c      Sat Dec 12 21:35:21 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: parse.c,v 1.473 2020/12/12 21:20:30 rillig Exp $       */
+/*     $NetBSD: parse.c,v 1.474 2020/12/12 21:35:21 rillig Exp $       */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -117,7 +117,7 @@
 #include "pathnames.h"
 
 /*     "@(#)parse.c    8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: parse.c,v 1.473 2020/12/12 21:20:30 rillig Exp $");
+MAKE_RCSID("$NetBSD: parse.c,v 1.474 2020/12/12 21:35:21 rillig Exp $");
 
 /* types and constants */
 
@@ -2949,51 +2949,49 @@
        }
 }
 
+/*
+ * Lines that begin with '.' can be pretty much anything:
+ *     - directives like '.include' or '.if',
+ *     - suffix rules like '.c.o:',
+ *     - dependencies for filenames that start with '.',
+ *     - variable assignments like '.tmp=value'.
+ */
 static Boolean
 ParseDirective(char *line)
 {
-       char *cp;
-
-       if (*line == '.') {
-               /*
-                * Lines that begin with '.' can be pretty much anything:
-                *      - directives like '.include' or '.if',
-                *      - suffix rules like '.c.o:',
-                *      - dependencies for filenames that start with '.',
-                *      - variable assignments like '.tmp=value'.
-                */
-               cp = line + 1;
+       char *cp = line + 1;
+
+       pp_skip_whitespace(&cp);
+       if (IsInclude(cp, FALSE)) {
+               ParseDoInclude(cp);
+               return TRUE;
+       }
+
+       if (strncmp(cp, "undef", 5) == 0) {
+               const char *varname;
+               cp += 5;
                pp_skip_whitespace(&cp);
-               if (IsInclude(cp, FALSE)) {
-                       ParseDoInclude(cp);
+               varname = cp;
+               for (; !ch_isspace(*cp) && *cp != '\0'; cp++)
+                       continue;
+               *cp = '\0';
+               Var_Delete(varname, VAR_GLOBAL);
+               /* TODO: undefine all variables, not only the first */
+               /* TODO: use Str_Words, like everywhere else */
+               return TRUE;
+       } else if (strncmp(cp, "export", 6) == 0) {
+               cp += 6;
+               pp_skip_whitespace(&cp);
+               Var_Export(cp);
+               return TRUE;
+       } else if (strncmp(cp, "unexport", 8) == 0) {
+               Var_UnExport(cp);
+               return TRUE;
+       } else if (strncmp(cp, "info", 4) == 0 ||
+                  strncmp(cp, "error", 5) == 0 ||
+                  strncmp(cp, "warning", 7) == 0) {
+               if (ParseMessage(cp))
                        return TRUE;
-               }
-               if (strncmp(cp, "undef", 5) == 0) {
-                       const char *varname;
-                       cp += 5;
-                       pp_skip_whitespace(&cp);
-                       varname = cp;
-                       for (; !ch_isspace(*cp) && *cp != '\0'; cp++)
-                               continue;
-                       *cp = '\0';
-                       Var_Delete(varname, VAR_GLOBAL);
-                       /* TODO: undefine all variables, not only the first */
-                       /* TODO: use Str_Words, like everywhere else */
-                       return TRUE;
-               } else if (strncmp(cp, "export", 6) == 0) {
-                       cp += 6;
-                       pp_skip_whitespace(&cp);
-                       Var_Export(cp);
-                       return TRUE;
-               } else if (strncmp(cp, "unexport", 8) == 0) {
-                       Var_UnExport(cp);
-                       return TRUE;
-               } else if (strncmp(cp, "info", 4) == 0 ||
-                          strncmp(cp, "error", 5) == 0 ||
-                          strncmp(cp, "warning", 7) == 0) {
-                       if (ParseMessage(cp))
-                               return TRUE;
-               }
        }
        return FALSE;
 }
@@ -3105,7 +3103,7 @@
 static void
 ParseLine(char *line)
 {
-       if (ParseDirective(line))
+       if (line[0] == '.' && ParseDirective(line))
                return;
 
        if (*line == '\t') {