[src/trunk]: src/usr.bin/make make: clean up VarAdd, Var_Delete, Var_Reexport...

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

details:   https://anonhg.NetBSD.org/src/rev/9cdda0ff875e
branches:  trunk
changeset: 952774:9cdda0ff875e
user:      rillig <rillig%NetBSD.org@localhost>
date:      Tue Feb 16 19:46:15 2021 +0000

description:
make: clean up VarAdd, Var_Delete, Var_ReexportVars

No functional change.

diffstat:

 usr.bin/make/var.c |  22 ++++++++++------------
 1 files changed, 10 insertions(+), 12 deletions(-)

diffs (76 lines):

diff -r daa1e9adb5fc -r 9cdda0ff875e usr.bin/make/var.c
--- a/usr.bin/make/var.c        Tue Feb 16 19:43:09 2021 +0000
+++ b/usr.bin/make/var.c        Tue Feb 16 19:46:15 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: var.c,v 1.830 2021/02/16 17:41:23 rillig Exp $ */
+/*     $NetBSD: var.c,v 1.831 2021/02/16 19:46:15 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -140,7 +140,7 @@
 #include "metachar.h"
 
 /*     "@(#)var.c      8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.830 2021/02/16 17:41:23 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.831 2021/02/16 19:46:15 rillig Exp $");
 
 typedef enum VarFlags {
        VFL_NONE        = 0,
@@ -486,18 +486,15 @@
        return TRUE;
 }
 
-/*
- * Add a new variable of the given name and value to the given scope.
- * The name and val arguments are duplicated so they may safely be freed.
- */
+/* Add a new variable of the given name and value to the given scope. */
 static void
-VarAdd(const char *name, const char *val, GNode *scope, VarSetFlags flags)
+VarAdd(const char *name, const char *value, GNode *scope, VarSetFlags flags)
 {
        HashEntry *he = HashTable_CreateEntry(&scope->vars, name, NULL);
-       Var *v = VarNew(FStr_InitRefer(/* aliased to */ he->key), val,
+       Var *v = VarNew(FStr_InitRefer(/* aliased to */ he->key), value,
            flags & VAR_SET_READONLY ? VFL_READONLY : VFL_NONE);
        HashEntry_Set(he, v);
-       DEBUG3(VAR, "%s:%s = %s\n", scope->name, name, val);
+       DEBUG3(VAR, "%s:%s = %s\n", scope->name, name, value);
 }
 
 /*
@@ -516,7 +513,7 @@
        }
 
        DEBUG2(VAR, "%s:delete %s\n", scope->name, varname);
-       v = HashEntry_Get(he);
+       v = he->value;
        if (v->flags & VFL_EXPORTED)
                unsetenv(v->name.str);
        if (strcmp(v->name.str, MAKE_EXPORTED) == 0)
@@ -717,7 +714,7 @@
         * We allow the makefiles to update MAKELEVEL and ensure
         * children see a correctly incremented value.
         */
-       char tmp[BUFSIZ];
+       char tmp[21];
        snprintf(tmp, sizeof tmp, "%d", makelevel + 1);
        setenv(MAKE_LEVEL_ENV, tmp, 1);
 
@@ -727,7 +724,7 @@
        if (var_exportedVars == VAR_EXPORTED_ALL) {
                HashIter hi;
 
-               /* Ouch! Exporting all variables at once is crazy... */
+               /* Ouch! Exporting all variables at once is crazy. */
                HashIter_Init(&hi, &SCOPE_GLOBAL->vars);
                while (HashIter_Next(&hi) != NULL) {
                        Var *var = hi.entry->value;
@@ -752,6 +749,7 @@
 
 static void
 ExportVars(const char *varnames, Boolean isExport, VarExportMode mode)
+/* TODO: try to combine the parameters 'isExport' and 'mode'. */
 {
        Words words = Str_Words(varnames, FALSE);
        size_t i;