[src/trunk]: src/usr.bin/xlint/lint1 lint: split current_namedmem into lvalue...

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

details:   https://anonhg.NetBSD.org/src/rev/6d48afef3596
branches:  trunk
changeset: 981898:6d48afef3596
user:      rillig <rillig%NetBSD.org@localhost>
date:      Thu Mar 25 19:20:15 2021 +0000

description:
lint: split current_namedmem into lvalue and rvalue form, rename them

This is a small step towards using the terminology from C99.

No functional change.

diffstat:

 usr.bin/xlint/lint1/init.c |  50 +++++++++++++++++++++++++--------------------
 1 files changed, 28 insertions(+), 22 deletions(-)

diffs (182 lines):

diff -r bc9e99e51aab -r 6d48afef3596 usr.bin/xlint/lint1/init.c
--- a/usr.bin/xlint/lint1/init.c        Thu Mar 25 19:11:18 2021 +0000
+++ b/usr.bin/xlint/lint1/init.c        Thu Mar 25 19:20:15 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: init.c,v 1.122 2021/03/25 19:11:18 rillig Exp $        */
+/*     $NetBSD: init.c,v 1.123 2021/03/25 19:20:15 rillig Exp $        */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: init.c,v 1.122 2021/03/25 19:11:18 rillig Exp $");
+__RCSID("$NetBSD: init.c,v 1.123 2021/03/25 19:20:15 rillig Exp $");
 #endif
 
 #include <stdlib.h>
@@ -280,12 +280,18 @@
 }
 
 static namlist_t **
-current_namedmem(void)
+current_designation_mod(void)
 {
        lint_assert(init != NULL);
        return &init->namedmem;
 }
 
+static const namlist_t *
+current_designation(void)
+{
+       return *current_designation_mod();
+}
+
 static initstack_element **
 current_initstk(void)
 {
@@ -368,7 +374,7 @@
 static void
 debug_named_member(void)
 {
-       namlist_t *head = *current_namedmem(), *name;
+       const namlist_t *head = current_designation(), *name;
 
        if (head == NULL)
                return;
@@ -468,7 +474,7 @@
 void
 designator_push_name(sbuf_t *sb)
 {
-       namlist_t *designation = *current_namedmem();
+       namlist_t *designation = *current_designation_mod();
        namlist_t *nam = xcalloc(1, sizeof (namlist_t));
        nam->n_name = sb->sb_name;
 
@@ -479,7 +485,7 @@
                 * A simple queue should suffice.
                 */
                nam->n_prev = nam->n_next = nam;
-               *current_namedmem() = nam;
+               *current_designation_mod() = nam;
        } else {
                designation->n_prev->n_next = nam;
                nam->n_prev = designation->n_prev;
@@ -520,14 +526,14 @@
 static void
 designator_shift_name(void)
 {
-       namlist_t *designation = *current_namedmem();
+       namlist_t *designation = *current_designation_mod();
 
        if (designation->n_next == designation) {
                free(designation);
-               *current_namedmem() = NULL;
+               *current_designation_mod() = NULL;
        } else {
                namlist_t *nam = designation;
-               *current_namedmem() = designation->n_next;
+               *current_designation_mod() = designation->n_next;
                nam->n_prev->n_next = nam->n_next;
                nam->n_next->n_prev = nam->n_prev;
                free(nam);
@@ -551,7 +557,7 @@
                return;
 
        /* TODO: merge into init_using_expr */
-       while (*current_namedmem() != NULL)
+       while (current_designation() != NULL)
                designator_shift_name();
 
        debug_enter();
@@ -584,7 +590,7 @@
         * related to initializing the named member.
         */
        debug_step("initializing named member '%s'",
-           (*current_namedmem())->n_name);
+           current_designation()->n_name);
 
        if (istk->i_type->t_tspec != STRUCT &&
            istk->i_type->t_tspec != UNION) {
@@ -600,7 +606,7 @@
                if (m->s_bitfield && m->s_name == unnamed)
                        continue;
 
-               if (strcmp(m->s_name, (*current_namedmem())->n_name) == 0) {
+               if (strcmp(m->s_name, current_designation()->n_name) == 0) {
                        debug_step("found matching member");
                        istk->i_subt = m->s_type;
                        /* XXX: why ++? */
@@ -612,7 +618,7 @@
        }
 
        /* undefined struct/union member: %s */
-       error(101, (*current_namedmem())->n_name);
+       error(101, current_designation()->n_name);
 
        designator_shift_name();
        istk->i_seen_named_member = true;
@@ -665,7 +671,7 @@
        lint_assert(istk->i_remaining >= 0);
        debug_step("%d elements remaining", istk->i_remaining);
 
-       if (*current_namedmem() != NULL)
+       if (current_designation() != NULL)
                initstack_pop_item_named_member();
        else
                initstack_pop_item_unnamed();
@@ -803,11 +809,11 @@
                 * look_up_struct_next
                 * look_up_struct_designator
                 */
-               if (*current_namedmem() != NULL) {
+               if (current_designation() != NULL) {
                        /* XXX: this log entry looks unnecessarily verbose */
                        debug_step("have member '%s', want member '%s'",
-                           m->s_name, (*current_namedmem())->n_name);
-                       if (strcmp(m->s_name, (*current_namedmem())->n_name) ==
+                           m->s_name, current_designation()->n_name);
+                       if (strcmp(m->s_name, current_designation()->n_name) ==
                            0) {
                                cnt++;
                                break;
@@ -820,7 +826,7 @@
                }
        }
 
-       if (*current_namedmem() != NULL) {
+       if (current_designation() != NULL) {
                if (m == NULL) {
                        debug_step("pop struct");
                        return true;
@@ -828,7 +834,7 @@
                istk->i_current_object = m;
                istk->i_subt = m->s_type;
                istk->i_seen_named_member = true;
-               debug_step("named member '%s'", (*current_namedmem())->n_name);
+               debug_step("named member '%s'", current_designation()->n_name);
                designator_shift_name();
                cnt = istk->i_type->t_tspec == STRUCT ? 2 : 1;
        }
@@ -873,9 +879,9 @@
        lint_assert(istk->i_type != NULL);
        switch (istk->i_type->t_tspec) {
        case ARRAY:
-               if (*current_namedmem() != NULL) {
+               if (current_designation() != NULL) {
                        debug_step("pop array namedmem=%s brace=%d",
-                           (*current_namedmem())->n_name, istk->i_brace);
+                           current_designation()->n_name, istk->i_brace);
                        goto pop;
                }
 
@@ -892,7 +898,7 @@
                        goto pop;
                break;
        default:
-               if (*current_namedmem() != NULL) {
+               if (current_designation() != NULL) {
                        debug_step("pop scalar");
        pop:
                        /* TODO: extract this into end_initializer_level */