Module Name:    src
Committed By:   rillig
Date:           Sun Jun  4 17:02:06 UTC 2023

Modified Files:
        src/usr.bin/indent: debug.c indent.h

Log Message:
indent: fix debug output of the parser symbol stack

Even though the stack always contains a stmt_list as first element,
print it nevertheless to avoid confusion about starting at index 1, and
to provide the full picture.


To generate a diff of this commit:
cvs rdiff -u -r1.31 -r1.32 src/usr.bin/indent/debug.c
cvs rdiff -u -r1.168 -r1.169 src/usr.bin/indent/indent.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/usr.bin/indent/debug.c
diff -u src/usr.bin/indent/debug.c:1.31 src/usr.bin/indent/debug.c:1.32
--- src/usr.bin/indent/debug.c:1.31	Sun Jun  4 14:20:00 2023
+++ src/usr.bin/indent/debug.c	Sun Jun  4 17:02:06 2023
@@ -1,4 +1,4 @@
-/*	$NetBSD: debug.c,v 1.31 2023/06/04 14:20:00 rillig Exp $	*/
+/*	$NetBSD: debug.c,v 1.32 2023/06/04 17:02:06 rillig Exp $	*/
 
 /*-
  * Copyright (c) 2023 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: debug.c,v 1.31 2023/06/04 14:20:00 rillig Exp $");
+__RCSID("$NetBSD: debug.c,v 1.32 2023/06/04 17:02:06 rillig Exp $");
 
 #include <stdarg.h>
 
@@ -348,10 +348,8 @@ void
 debug_parse_stack(const char *situation)
 {
 	printf("parse stack %s:", situation);
-	for (int i = 1; i <= ps.tos; ++i)
+	for (int i = 0; i <= ps.tos; ++i)
 		printf(" %s %d", psym_name[ps.s_sym[i]], ps.s_ind_level[i]);
-	if (ps.tos == 0)
-		printf(" empty");
 	printf("\n");
 }
 #endif

Index: src/usr.bin/indent/indent.h
diff -u src/usr.bin/indent/indent.h:1.168 src/usr.bin/indent/indent.h:1.169
--- src/usr.bin/indent/indent.h:1.168	Sun Jun  4 14:20:00 2023
+++ src/usr.bin/indent/indent.h	Sun Jun  4 17:02:06 2023
@@ -1,4 +1,4 @@
-/*	$NetBSD: indent.h,v 1.168 2023/06/04 14:20:00 rillig Exp $	*/
+/*	$NetBSD: indent.h,v 1.169 2023/06/04 17:02:06 rillig Exp $	*/
 
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
@@ -112,10 +112,14 @@ typedef enum lexer_symbol {
 	lsym_return,
 } lexer_symbol;
 
+/*
+ * Structure of the source code, in terms of declarations, statements and
+ * braces; used to determine the indentation level of these parts.
+ */
 typedef enum parser_symbol {
-	psym_0,			/* a placeholder */
+	psym_0,			/* a placeholder; not stored on the stack */
 	psym_lbrace,
-	psym_rbrace,
+	psym_rbrace,		/* not stored on the stack */
 	psym_decl,
 	psym_stmt,
 	psym_stmt_list,

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