Initial revision
git-svn-id: https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk@2 59561ff5-6e30-0410-9f3c-9617f08c8826
diff --git a/skeletons/NULL.c b/skeletons/NULL.c
new file mode 100644
index 0000000..9027e2c
--- /dev/null
+++ b/skeletons/NULL.c
@@ -0,0 +1,51 @@
+/*-
+ * Copyright (c) 2003 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <NULL.h>
+#include <BOOLEAN.h> /* Implemented in terms of BOOLEAN type */
+
+/*
+ * NULL basic type description.
+ */
+static ber_tlv_tag_t asn1_DEF_NULL_tags[] = {
+ (ASN_TAG_CLASS_UNIVERSAL | (5 << 2))
+};
+asn1_TYPE_descriptor_t asn1_DEF_NULL = {
+ "NULL",
+ asn_generic_no_constraint,
+ BOOLEAN_decode_ber, /* Implemented in terms of BOOLEAN */
+ NULL_encode_der, /* Special handling of DER encoding */
+ NULL_print,
+ BOOLEAN_free,
+ 0, /* Use generic outmost tag fetcher */
+ asn1_DEF_NULL_tags,
+ sizeof(asn1_DEF_NULL_tags)/sizeof(asn1_DEF_NULL_tags[0]),
+ 1, /* Single UNIVERSAL tag may be implicitly overriden */
+ 0 /* Always in primitive form */
+};
+
+der_enc_rval_t
+NULL_encode_der(asn1_TYPE_descriptor_t *sd, void *ptr,
+ int tag_mode, ber_tlv_tag_t tag,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ der_enc_rval_t erval;
+
+ erval.encoded = der_write_tags(sd, 0, tag_mode, tag, cb, app_key);
+ if(erval.encoded == -1) {
+ erval.failed_type = sd;
+ erval.structure_ptr = ptr;
+ }
+
+ return erval;
+}
+
+int
+NULL_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ if(sptr) {
+ return cb("<present>", 9, app_key);
+ } else {
+ return cb("<absent>", 8, app_key);
+ }
+}