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/*-
* Copyright (c) 2003 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <asn_internal.h>
#include <asn_codecs_prim.h>
#include <NULL.h>
#include <BOOLEAN.h> /* Implemented in terms of BOOLEAN type */
/*
* NULL basic type description.
*/
static ber_tlv_tag_t asn_DEF_NULL_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (5 << 2))
};
asn_TYPE_descriptor_t asn_DEF_NULL = {
"NULL",
"NULL",
BOOLEAN_free,
NULL_print,
asn_generic_no_constraint,
BOOLEAN_decode_ber, /* Implemented in terms of BOOLEAN */
NULL_encode_der, /* Special handling of DER encoding */
NULL_decode_xer,
NULL_encode_xer,
0, /* Use generic outmost tag fetcher */
asn_DEF_NULL_tags,
sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
asn_DEF_NULL_tags, /* Same as above */
sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
0, 0, /* No members */
0 /* No specifics */
};
asn_enc_rval_t
NULL_encode_der(asn_TYPE_descriptor_t *td, void *ptr,
int tag_mode, ber_tlv_tag_t tag,
asn_app_consume_bytes_f *cb, void *app_key) {
asn_enc_rval_t erval;
erval.encoded = der_write_tags(td, 0, tag_mode, 0, tag, cb, app_key);
if(erval.encoded == -1) {
erval.failed_type = td;
erval.structure_ptr = ptr;
}
return erval;
}
asn_enc_rval_t
NULL_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
int ilevel, enum xer_encoder_flags_e flags,
asn_app_consume_bytes_f *cb, void *app_key) {
asn_enc_rval_t er;
(void)td;
(void)sptr;
(void)ilevel;
(void)flags;
(void)cb;
(void)app_key;
/* XMLNullValue is empty */
er.encoded = 0;
return er;
}
static ssize_t
NULL__xer_body_decode(void *sptr, void *chunk_buf, size_t chunk_size) {
(void)sptr;
if(xer_is_whitespace(chunk_buf, chunk_size))
return chunk_size;
return -1;
}
asn_dec_rval_t
NULL_decode_xer(asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td, void **sptr, const char *opt_mname,
void *buf_ptr, size_t size) {
return xer_decode_primitive(opt_codec_ctx, td,
sptr, sizeof(NULL_t), opt_mname, buf_ptr, size,
NULL__xer_body_decode);
}
int
NULL_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(sptr) {
return (cb("<present>", 9, app_key) < 0) ? -1 : 0;
} else {
return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
}
}
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