[src/trunk]: src/usr.bin/make make(1): extract ParseDependencyTargetWord from...

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

details:   https://anonhg.NetBSD.org/src/rev/48eb8df9cc58
branches:  trunk
changeset: 938782:48eb8df9cc58
user:      rillig <rillig%NetBSD.org@localhost>
date:      Mon Sep 14 16:40:06 2020 +0000

description:
make(1): extract ParseDependencyTargetWord from ParseDoDependency

diffstat:

 usr.bin/make/parse.c |  65 ++++++++++++++++++++++++++++++---------------------
 1 files changed, 38 insertions(+), 27 deletions(-)

diffs (93 lines):

diff -r 34bdaf108af1 -r 48eb8df9cc58 usr.bin/make/parse.c
--- a/usr.bin/make/parse.c      Mon Sep 14 16:33:07 2020 +0000
+++ b/usr.bin/make/parse.c      Mon Sep 14 16:40:06 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: parse.c,v 1.313 2020/09/14 16:33:07 rillig Exp $       */
+/*     $NetBSD: parse.c,v 1.314 2020/09/14 16:40:06 rillig Exp $       */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -131,7 +131,7 @@
 #include "pathnames.h"
 
 /*     "@(#)parse.c    8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: parse.c,v 1.313 2020/09/14 16:33:07 rillig Exp $");
+MAKE_RCSID("$NetBSD: parse.c,v 1.314 2020/09/14 16:40:06 rillig Exp $");
 
 /* types and constants */
 
@@ -1101,6 +1101,40 @@
        Parse_Error(PARSE_FATAL, "Need an operator");
 }
 
+static void
+ParseDependencyTargetWord(/*const*/ char **pp, const char *lstart)
+{
+    /*const*/ char *cp = *pp;
+
+    while (*cp != '\0') {
+       if ((ch_isspace(*cp) || *cp == '!' || *cp == ':' || *cp == '(') &&
+           !ParseIsEscaped(lstart, cp))
+           break;
+
+       if (*cp == '$') {
+           /*
+            * Must be a dynamic source (would have been expanded
+            * otherwise), so call the Var module to parse the puppy
+            * so we can safely advance beyond it...There should be
+            * no errors in this, as they would have been discovered
+            * in the initial Var_Subst and we wouldn't be here.
+            */
+           const char *nested_p = cp;
+           const char *nested_val;
+           void    *freeIt;
+
+           (void)Var_Parse(&nested_p, VAR_CMD, VARE_UNDEFERR|VARE_WANTRES,
+                           &nested_val, &freeIt);
+           /* TODO: handle errors */
+           free(freeIt);
+           cp += nested_p - cp;
+       } else
+           cp++;
+    }
+
+    *pp = cp;
+}
+
 /* Parse a dependency line consisting of targets, followed by a dependency
  * operator, optionally followed by sources.
  *
@@ -1161,31 +1195,8 @@
         */
 
        /* Find the end of the next word. */
-       for (cp = line; *cp != '\0';) {
-           if ((ch_isspace(*cp) || *cp == '!' || *cp == ':' || *cp == '(') &&
-               !ParseIsEscaped(lstart, cp))
-               break;
-
-           if (*cp == '$') {
-               /*
-                * Must be a dynamic source (would have been expanded
-                * otherwise), so call the Var module to parse the puppy
-                * so we can safely advance beyond it...There should be
-                * no errors in this, as they would have been discovered
-                * in the initial Var_Subst and we wouldn't be here.
-                */
-               const char *nested_p = cp;
-               const char *nested_val;
-               void    *freeIt;
-
-               (void)Var_Parse(&nested_p, VAR_CMD, VARE_UNDEFERR|VARE_WANTRES,
-                               &nested_val, &freeIt);
-               /* TODO: handle errors */
-               free(freeIt);
-               cp += nested_p - cp;
-           } else
-               cp++;
-       }
+       cp = line;
+       ParseDependencyTargetWord(&cp, lstart);
 
        /*
         * If the word is followed by a left parenthesis, it's the