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

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

details:   https://anonhg.NetBSD.org/src/rev/3ac0576f2656
branches:  trunk
changeset: 938644:3ac0576f2656
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Sep 12 19:33:02 2020 +0000

description:
make(1): extract ShortVarValue from Var_Parse

diffstat:

 usr.bin/make/var.c |  56 +++++++++++++++++++++++++++++------------------------
 1 files changed, 31 insertions(+), 25 deletions(-)

diffs (90 lines):

diff -r e2da62105dab -r 3ac0576f2656 usr.bin/make/var.c
--- a/usr.bin/make/var.c        Sat Sep 12 19:24:59 2020 +0000
+++ b/usr.bin/make/var.c        Sat Sep 12 19:33:02 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: var.c,v 1.501 2020/09/12 19:24:59 rillig Exp $ */
+/*     $NetBSD: var.c,v 1.502 2020/09/12 19:33:02 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,14 +69,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: var.c,v 1.501 2020/09/12 19:24:59 rillig Exp $";
+static char rcsid[] = "$NetBSD: var.c,v 1.502 2020/09/12 19:33:02 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)var.c      8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: var.c,v 1.501 2020/09/12 19:24:59 rillig Exp $");
+__RCSID("$NetBSD: var.c,v 1.502 2020/09/12 19:33:02 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -3302,6 +3302,33 @@
     return FALSE;
 }
 
+static const char *
+ShortVarValue(char varname, const GNode *ctxt, VarEvalFlags eflags)
+{
+    if (ctxt == VAR_CMD || ctxt == VAR_GLOBAL) {
+       /*
+        * If substituting a local variable in a non-local context,
+        * assume it's for dynamic source stuff. We have to handle
+        * this specially and return the longhand for the variable
+        * with the dollar sign escaped so it makes it back to the
+        * caller. Only four of the local variables are treated
+        * specially as they are the only four that will be set
+        * when dynamic sources are expanded.
+        */
+       switch (varname) {
+       case '@':
+           return "$(.TARGET)";
+       case '%':
+           return "$(.MEMBER)";
+       case '*':
+           return "$(.PREFIX)";
+       case '!':
+           return "$(.ARCHIVE)";
+       }
+    }
+    return eflags & VARE_UNDEFERR ? var_Error : varNoError;
+}
+
 /* Skip to the end character or a colon, whichever comes first. */
 static void
 ParseVarname(const char **pp, char startc, char endc,
@@ -3431,28 +3458,7 @@
        if (v == NULL) {
            *pp += 2;
 
-           if (ctxt == VAR_CMD || ctxt == VAR_GLOBAL) {
-               /*
-                * If substituting a local variable in a non-local context,
-                * assume it's for dynamic source stuff. We have to handle
-                * this specially and return the longhand for the variable
-                * with the dollar sign escaped so it makes it back to the
-                * caller. Only four of the local variables are treated
-                * specially as they are the only four that will be set
-                * when dynamic sources are expanded.
-                */
-               switch (start[1]) {
-               case '@':
-                   return "$(.TARGET)";
-               case '%':
-                   return "$(.MEMBER)";
-               case '*':
-                   return "$(.PREFIX)";
-               case '!':
-                   return "$(.ARCHIVE)";
-               }
-           }
-           return (eflags & VARE_UNDEFERR) ? var_Error : varNoError;
+           return ShortVarValue(start[1], ctxt, eflags);
        } else {
            haveModifier = FALSE;
            p = start + 1;