| /*- |
| * 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(asn_TYPE_descriptor_t *td, void *sptr, void *chunk_buf, size_t chunk_size) { |
| (void)td; |
| (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; |
| } |
| } |