[src/trunk]: src/usr.bin/xlint/common add a type comparison function.

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

details:   https://anonhg.NetBSD.org/src/rev/1ba345128637
branches:  trunk
changeset: 817388:1ba345128637
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Aug 19 10:18:11 2016 +0000

description:
add a type comparison function.

diffstat:

 usr.bin/xlint/common/externs.h |   5 +-
 usr.bin/xlint/common/tyname.c  |  66 ++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 66 insertions(+), 5 deletions(-)

diffs (107 lines):

diff -r 49a4c3dd1f74 -r 1ba345128637 usr.bin/xlint/common/externs.h
--- a/usr.bin/xlint/common/externs.h    Fri Aug 19 10:05:35 2016 +0000
+++ b/usr.bin/xlint/common/externs.h    Fri Aug 19 10:18:11 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: externs.h,v 1.5 2014/04/17 18:52:03 christos Exp $     */
+/*     $NetBSD: externs.h,v 1.6 2016/08/19 10:18:11 christos Exp $     */
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -44,7 +44,8 @@
 /*
  * tyname.c
  */
-extern const   char *tyname(char *, size_t, type_t *);
+extern const   char *tyname(char *, size_t, const type_t *);
+extern int     sametype(const type_t *, const type_t *);
 extern const   char *basictyname(tspec_t);
 
 /*
diff -r 49a4c3dd1f74 -r 1ba345128637 usr.bin/xlint/common/tyname.c
--- a/usr.bin/xlint/common/tyname.c     Fri Aug 19 10:05:35 2016 +0000
+++ b/usr.bin/xlint/common/tyname.c     Fri Aug 19 10:18:11 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tyname.c,v 1.11 2012/06/20 18:50:11 christos Exp $     */
+/*     $NetBSD: tyname.c,v 1.12 2016/08/19 10:18:11 christos Exp $     */
 
 /*-
  * Copyright (c) 2005 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: tyname.c,v 1.11 2012/06/20 18:50:11 christos Exp $");
+__RCSID("$NetBSD: tyname.c,v 1.12 2016/08/19 10:18:11 christos Exp $");
 #endif
 
 #include <limits.h>
@@ -88,8 +88,68 @@
        }
 }
 
+int
+sametype(const type_t *t1, const type_t *t2)
+{
+       tspec_t t;
+
+       if (t1->t_tspec != t2->t_tspec)
+               return 0;
+
+       /* Ignore const/void */
+
+       switch (t = t1->t_tspec) {
+       case BOOL:
+       case CHAR:
+       case UCHAR:
+       case SCHAR:
+       case SHORT:
+       case USHORT:
+       case INT:
+       case UINT:
+       case LONG:
+       case ULONG:
+       case QUAD:
+       case UQUAD:
+       case FLOAT:
+       case DOUBLE:
+       case LDOUBLE:
+       case VOID:
+       case FUNC:
+       case COMPLEX:
+       case FCOMPLEX:
+       case DCOMPLEX:
+       case LCOMPLEX:
+               return 1;
+       case ARRAY:
+               if (t1->t_dim != t2->t_dim)
+                       return 0;
+               /*FALLTHROUGH*/
+       case PTR:
+               return sametype(t1->t_subt, t2->t_subt);
+       case ENUM:
+#ifdef t_enum
+               return strcmp(t1->t_enum->etag->s_name,
+                   t2->t_enum->etag->s_name) == 0;
+#else
+               return 1;
+#endif
+       case STRUCT:
+       case UNION:
+#ifdef t_str
+               return strcmp(t1->t_str->stag->s_name,
+                   t2->t_str->stag->s_name) == 0;
+#else
+               return 1;
+#endif
+       default:
+               LERROR("tyname(%d)", t);
+               return 0;
+       }
+}
+
 const char *
-tyname(char *buf, size_t bufsiz, type_t *tp)
+tyname(char *buf, size_t bufsiz, const type_t *tp)
 {
        tspec_t t;
        const   char *s;