--- /dev/null
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <constr_SEQUENCE_OF.h>
+#include <asn_SEQUENCE_OF.h>
+
+/*
+ * The DER encoder of the SEQUENCE OF type.
+ */
+asn_enc_rval_t
+SEQUENCE_OF_encode_der(const asn_TYPE_descriptor_t *td, const void *ptr,
+ int tag_mode, ber_tlv_tag_t tag,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ asn_TYPE_member_t *elm = td->elements;
+ const asn_anonymous_sequence_ *list = _A_CSEQUENCE_FROM_VOID(ptr);
+ size_t computed_size = 0;
+ ssize_t encoding_size = 0;
+ asn_enc_rval_t erval = {0,0,0};
+ int edx;
+
+ ASN_DEBUG("Estimating size of SEQUENCE OF %s", td->name);
+
+ /*
+ * Gather the length of the underlying members sequence.
+ */
+ for(edx = 0; edx < list->count; edx++) {
+ void *memb_ptr = list->array[edx];
+ if(!memb_ptr) continue;
+ erval = elm->type->op->der_encoder(elm->type, memb_ptr,
+ 0, elm->tag,
+ 0, 0);
+ if(erval.encoded == -1)
+ return erval;
+ computed_size += erval.encoded;
+ }
+
+ /*
+ * Encode the TLV for the sequence itself.
+ */
+ encoding_size = der_write_tags(td, computed_size, tag_mode, 1, tag,
+ cb, app_key);
+ if(encoding_size == -1) {
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ return erval;
+ }
+
+ computed_size += encoding_size;
+ if(!cb) {
+ erval.encoded = computed_size;
+ ASN__ENCODED_OK(erval);
+ }
+
+ ASN_DEBUG("Encoding members of SEQUENCE OF %s", td->name);
+
+ /*
+ * Encode all members.
+ */
+ for(edx = 0; edx < list->count; edx++) {
+ void *memb_ptr = list->array[edx];
+ if(!memb_ptr) continue;
+ erval = elm->type->op->der_encoder(elm->type, memb_ptr,
+ 0, elm->tag,
+ cb, app_key);
+ if(erval.encoded == -1)
+ return erval;
+ encoding_size += erval.encoded;
+ }
+
+ if(computed_size != (size_t)encoding_size) {
+ /*
+ * Encoded size is not equal to the computed size.
+ */
+ erval.encoded = -1;
+ erval.failed_type = td;
+ erval.structure_ptr = ptr;
+ } else {
+ erval.encoded = computed_size;
+ erval.structure_ptr = 0;
+ erval.failed_type = 0;
+ }
+
+ return erval;
+}