2 * Copyright (c) 2003, 2005 Lev Walkin <vlm@lionet.info>. All rights reserved.
\r
3 * Redistribution and modifications are permitted subject to BSD license.
\r
5 #include <asn_internal.h>
\r
6 #include <asn_codecs_prim.h>
\r
8 #include <BOOLEAN.h> /* Implemented in terms of BOOLEAN type */
\r
11 * NULL basic type description.
\r
13 static const ber_tlv_tag_t asn_DEF_NULL_tags[] = {
\r
14 (ASN_TAG_CLASS_UNIVERSAL | (5 << 2))
\r
16 asn_TYPE_operation_t asn_OP_NULL = {
\r
20 BOOLEAN_decode_ber, /* Implemented in terms of BOOLEAN */
\r
21 NULL_encode_der, /* Special handling of DER encoding */
\r
24 #ifdef ASN_DISABLE_OER_SUPPORT
\r
30 #endif /* ASN_DISABLE_OER_SUPPORT */
\r
31 #ifdef ASN_DISABLE_PER_SUPPORT
\r
37 NULL_decode_uper, /* Unaligned PER decoder */
\r
38 NULL_encode_uper, /* Unaligned PER encoder */
\r
39 NULL_decode_aper, /* Aligned PER decoder */
\r
40 NULL_encode_aper, /* Aligned PER encoder */
\r
41 #endif /* ASN_DISABLE_PER_SUPPORT */
\r
43 0 /* Use generic outmost tag fetcher */
\r
45 asn_TYPE_descriptor_t asn_DEF_NULL = {
\r
50 sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
\r
51 asn_DEF_NULL_tags, /* Same as above */
\r
52 sizeof(asn_DEF_NULL_tags) / sizeof(asn_DEF_NULL_tags[0]),
\r
53 { 0, 0, asn_generic_no_constraint },
\r
54 0, 0, /* No members */
\r
55 0 /* No specifics */
\r
59 NULL_encode_der(const asn_TYPE_descriptor_t *td, const void *ptr, int tag_mode,
\r
60 ber_tlv_tag_t tag, asn_app_consume_bytes_f *cb, void *app_key) {
\r
61 asn_enc_rval_t erval = {0,0,0};
\r
63 erval.encoded = der_write_tags(td, 0, tag_mode, 0, tag, cb, app_key);
\r
64 if(erval.encoded == -1) {
\r
65 erval.failed_type = td;
\r
66 erval.structure_ptr = ptr;
\r
69 ASN__ENCODED_OK(erval);
\r
73 NULL_encode_xer(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
\r
74 enum xer_encoder_flags_e flags, asn_app_consume_bytes_f *cb,
\r
76 asn_enc_rval_t er = {0,0,0};
\r
85 /* XMLNullValue is empty */
\r
87 ASN__ENCODED_OK(er);
\r
91 static enum xer_pbd_rval
\r
92 NULL__xer_body_decode(const asn_TYPE_descriptor_t *td, void *sptr,
\r
93 const void *chunk_buf, size_t chunk_size) {
\r
96 (void)chunk_buf; /* Going to be empty according to the rules below. */
\r
99 * There must be no content in self-terminating <NULL/> tag.
\r
102 return XPBD_BROKEN_ENCODING;
\r
104 return XPBD_BODY_CONSUMED;
\r
108 NULL_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
\r
109 const asn_TYPE_descriptor_t *td, void **sptr,
\r
110 const char *opt_mname, const void *buf_ptr, size_t size) {
\r
111 return xer_decode_primitive(opt_codec_ctx, td,
\r
112 sptr, sizeof(NULL_t), opt_mname, buf_ptr, size,
\r
113 NULL__xer_body_decode);
\r
117 NULL_compare(const asn_TYPE_descriptor_t *td, const void *a, const void *b) {
\r
125 NULL_print(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
\r
126 asn_app_consume_bytes_f *cb, void *app_key) {
\r
127 (void)td; /* Unused argument */
\r
128 (void)ilevel; /* Unused argument */
\r
131 return (cb("<present>", 9, app_key) < 0) ? -1 : 0;
\r
133 return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
\r
137 #ifndef ASN_DISABLE_OER_SUPPORT
\r
140 NULL_decode_oer(const asn_codec_ctx_t *opt_codec_ctx,
\r
141 const asn_TYPE_descriptor_t *td,
\r
142 const asn_oer_constraints_t *constraints, void **sptr,
\r
143 const void *ptr, size_t size) {
\r
144 asn_dec_rval_t rv = {RC_OK, 0};
\r
145 (void)opt_codec_ctx;
\r
152 *sptr = MALLOC(sizeof(NULL_t));
\r
154 *(NULL_t *)*sptr = 0;
\r
156 ASN__DECODE_FAILED;
\r
164 NULL_encode_oer(const asn_TYPE_descriptor_t *td,
\r
165 const asn_oer_constraints_t *constraints, const void *sptr,
\r
166 asn_app_consume_bytes_f *cb, void *app_key) {
\r
167 asn_enc_rval_t er = {0,0,0};
\r
175 er.encoded = 0; /* Encoding in 0 bytes. */
\r
177 ASN__ENCODED_OK(er);
\r
180 #endif /* ASN_DISABLE_OER_SUPPORT */
\r
182 #ifndef ASN_DISABLE_PER_SUPPORT
\r
185 NULL_decode_uper(const asn_codec_ctx_t *opt_codec_ctx,
\r
186 const asn_TYPE_descriptor_t *td,
\r
187 const asn_per_constraints_t *constraints, void **sptr,
\r
188 asn_per_data_t *pd) {
\r
191 (void)opt_codec_ctx;
\r
197 *sptr = MALLOC(sizeof(NULL_t));
\r
199 *(NULL_t *)*sptr = 0;
\r
201 ASN__DECODE_FAILED;
\r
206 * NULL type does not have content octets.
\r
215 NULL_encode_uper(const asn_TYPE_descriptor_t *td,
\r
216 const asn_per_constraints_t *constraints, const void *sptr,
\r
217 asn_per_outp_t *po) {
\r
218 asn_enc_rval_t er = {0,0,0};
\r
226 ASN__ENCODED_OK(er);
\r
230 NULL_decode_aper(const asn_codec_ctx_t *opt_codec_ctx,
\r
231 const asn_TYPE_descriptor_t *td,
\r
232 const asn_per_constraints_t *constraints, void **sptr, asn_per_data_t *pd) {
\r
233 asn_dec_rval_t rv = {RC_OK, 0};
\r
235 (void)opt_codec_ctx;
\r
241 *sptr = MALLOC(sizeof(NULL_t));
\r
243 *(NULL_t *)*sptr = 0;
\r
245 ASN__DECODE_FAILED;
\r
250 * NULL type does not have content octets.
\r
260 NULL_encode_aper(const asn_TYPE_descriptor_t *td,
\r
261 const asn_per_constraints_t *constraints,
\r
262 const void *sptr, asn_per_outp_t *po) {
\r
263 asn_enc_rval_t er = {0,0,0};
\r
271 ASN__ENCODED_OK(er);
\r
274 #endif /* ASN_DISABLE_PER_SUPPORT */
\r
276 asn_random_fill_result_t
\r
277 NULL_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
\r
278 const asn_encoding_constraints_t *constr,
\r
279 size_t max_length) {
\r
280 asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
\r
281 asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
\r
282 asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
\r
283 NULL_t *st = *sptr;
\r
288 if(max_length == 0) return result_skipped;
\r
291 st = (NULL_t *)(*sptr = CALLOC(1, sizeof(*st)));
\r
293 return result_failed;
\r