[src/trunk]: src/usr.bin/xlint/lint1 lint: add debugging output for the gramm...

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

details:   https://anonhg.NetBSD.org/src/rev/35befc58c5fb
branches:  trunk
changeset: 1022653:35befc58c5fb
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Jul 31 17:09:21 2021 +0000

description:
lint: add debugging output for the grammar tokens

No functional change outside debug mode.

diffstat:

 usr.bin/xlint/lint1/Makefile   |   4 +-
 usr.bin/xlint/lint1/cgram.y    |  58 ++++++++++++++++++++++++++++++++++++++++-
 usr.bin/xlint/lint1/decl.c     |   6 ++--
 usr.bin/xlint/lint1/externs1.h |   3 +-
 4 files changed, 63 insertions(+), 8 deletions(-)

diffs (156 lines):

diff -r 08117afc9c03 -r 35befc58c5fb usr.bin/xlint/lint1/Makefile
--- a/usr.bin/xlint/lint1/Makefile      Sat Jul 31 16:54:37 2021 +0000
+++ b/usr.bin/xlint/lint1/Makefile      Sat Jul 31 17:09:21 2021 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile,v 1.80 2021/07/25 22:14:36 rillig Exp $
+#      $NetBSD: Makefile,v 1.81 2021/07/31 17:09:21 rillig Exp $
 
 .include <bsd.own.mk>
 
@@ -22,7 +22,7 @@
 
 CPPFLAGS+=     -DIS_LINT1
 CPPFLAGS+=     -I${.CURDIR}
-CPPFLAGS+=     ${DEBUG:D-DDEBUG}
+CPPFLAGS+=     ${DEBUG:D-DDEBUG -DYYDEBUG}
 
 COPTS.err.c+=  ${${ACTIVE_CC} == "clang":? -Wno-format-nonliteral :}
 
diff -r 08117afc9c03 -r 35befc58c5fb usr.bin/xlint/lint1/cgram.y
--- a/usr.bin/xlint/lint1/cgram.y       Sat Jul 31 16:54:37 2021 +0000
+++ b/usr.bin/xlint/lint1/cgram.y       Sat Jul 31 17:09:21 2021 +0000
@@ -1,5 +1,5 @@
 %{
-/* $NetBSD: cgram.y,v 1.351 2021/07/27 05:52:53 rillig Exp $ */
+/* $NetBSD: cgram.y,v 1.352 2021/07/31 17:09:21 rillig Exp $ */
 
 /*
  * Copyright (c) 1996 Christopher G. Demetriou.  All Rights Reserved.
@@ -35,7 +35,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: cgram.y,v 1.351 2021/07/27 05:52:53 rillig Exp $");
+__RCSID("$NetBSD: cgram.y,v 1.352 2021/07/31 17:09:21 rillig Exp $");
 #endif
 
 #include <limits.h>
@@ -122,6 +122,13 @@
                s->s_styp = NULL;
 }
 
+#if defined(YYDEBUG) && (defined(YYBYACC) || defined(YYBISON))
+#define YYSTYPE_TOSTRING cgram_to_string
+#endif
+#if defined(YYDEBUG) && defined(YYBISON)
+#define YYPRINT cgram_print
+#endif
+
 %}
 
 %expect 150
@@ -349,6 +356,12 @@
 %type  <y_tnode>       do_while_expr
 %type  <y_sym>         func_declarator
 
+%{
+#if defined(YYDEBUG) && defined(YYBISON)
+static void cgram_print(FILE *, int, YYSTYPE);
+#endif
+%}
+
 %%
 
 program:
@@ -2116,6 +2129,47 @@
        return 0;
 }
 
+#if (defined(YYDEBUG) && YYDEBUG > 0 && defined(YYBYACC)) \
+    || (defined(YYDEBUG) && defined(YYBISON))
+static const char *
+cgram_to_string(int token, YYSTYPE val)
+{
+       static const char *tqual_name[] = {
+               "const", "volatile", "restrict", "_Thread_local"
+       };
+
+       switch (token) {
+       case T_INCDEC:
+       case T_MULTIPLICATIVE:
+       case T_ADDITIVE:
+       case T_SHIFT:
+       case T_RELATIONAL:
+       case T_EQUALITY:
+       case T_OPASSIGN:
+               return modtab[val.y_op].m_name;
+       case T_SCLASS:
+               return scl_name(val.y_scl);
+       case T_TYPE:
+       case T_STRUCT_OR_UNION:
+               return tspec_name(val.y_tspec);
+       case T_QUAL:
+               return tqual_name[val.y_tqual];
+       case T_NAME:
+               return val.y_name->sb_name;
+       default:
+               return "<none>";
+       }
+}
+#endif
+
+#if defined(YYDEBUG) && defined(YYBISON)
+static void
+cgram_print(FILE *output, int token, YYSTYPE val)
+{
+       fprintf(output, "%s", cgram_to_string(token, val));
+}
+#endif
+
 static void
 cgram_declare(sym_t *decl, bool initflg, sbuf_t *renaming)
 {
diff -r 08117afc9c03 -r 35befc58c5fb usr.bin/xlint/lint1/decl.c
--- a/usr.bin/xlint/lint1/decl.c        Sat Jul 31 16:54:37 2021 +0000
+++ b/usr.bin/xlint/lint1/decl.c        Sat Jul 31 17:09:21 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: decl.c,v 1.211 2021/07/31 11:03:04 rillig Exp $ */
+/* $NetBSD: decl.c,v 1.212 2021/07/31 17:09:21 rillig Exp $ */
 
 /*
  * Copyright (c) 1996 Christopher G. Demetriou.  All Rights Reserved.
@@ -38,7 +38,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: decl.c,v 1.211 2021/07/31 11:03:04 rillig Exp $");
+__RCSID("$NetBSD: decl.c,v 1.212 2021/07/31 17:09:21 rillig Exp $");
 #endif
 
 #include <sys/param.h>
@@ -134,7 +134,7 @@
 }
 
 /* Return the name of the "storage class" in the wider sense. */
-static const char *
+const char *
 scl_name(scl_t scl)
 {
        static const char *const names[] = {
diff -r 08117afc9c03 -r 35befc58c5fb usr.bin/xlint/lint1/externs1.h
--- a/usr.bin/xlint/lint1/externs1.h    Sat Jul 31 16:54:37 2021 +0000
+++ b/usr.bin/xlint/lint1/externs1.h    Sat Jul 31 17:09:21 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: externs1.h,v 1.122 2021/07/31 11:03:04 rillig Exp $    */
+/*     $NetBSD: externs1.h,v 1.123 2021/07/31 17:09:21 rillig Exp $    */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -198,6 +198,7 @@
 extern void    check_global_symbols(void);
 extern void    print_previous_declaration(int, const sym_t *);
 extern int     to_int_constant(tnode_t *, bool);
+extern const char *scl_name(scl_t);
 
 /*
  * tree.c