port/merge Eurecom APER support from OPENAIRMME

Eurecom has developed APER support for asn1c as part of the OPENAIRMME
softare (a LTE MME).  This is too important to let it bit-rout out
of asn1c.  Let's forward-port and merge it.
diff --git a/skeletons/NativeInteger.c b/skeletons/NativeInteger.c
index 7f8e927..ef17bee 100644
--- a/skeletons/NativeInteger.c
+++ b/skeletons/NativeInteger.c
@@ -31,6 +31,8 @@
 	NativeInteger_encode_xer,
 	NativeInteger_decode_uper,	/* Unaligned PER decoder */
 	NativeInteger_encode_uper,	/* Unaligned PER encoder */
+	NativeInteger_decode_aper,	/* Aligned PER decoder */
+	NativeInteger_encode_aper,	/* Aligned PER encoder */
 	0, /* Use generic outmost tag fetcher */
 	asn_DEF_NativeInteger_tags,
 	sizeof(asn_DEF_NativeInteger_tags) / sizeof(asn_DEF_NativeInteger_tags[0]),
@@ -267,6 +269,42 @@
 	return rval;
 }
 
+asn_dec_rval_t
+NativeInteger_decode_aper(asn_codec_ctx_t *opt_codec_ctx,
+	asn_TYPE_descriptor_t *td,
+	asn_per_constraints_t *constraints, void **sptr, asn_per_data_t *pd) {
+
+	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+	asn_dec_rval_t rval;
+	long *native = (long *)*sptr;
+	INTEGER_t tmpint;
+	void *tmpintptr = &tmpint;
+
+	(void)opt_codec_ctx;
+	ASN_DEBUG("Decoding NativeInteger %s (APER)", td->name);
+
+	if(!native) {
+		native = (long *)(*sptr = CALLOC(1, sizeof(*native)));
+		if(!native) _ASN_DECODE_FAILED;
+	}
+
+	memset(&tmpint, 0, sizeof tmpint);
+	rval = INTEGER_decode_aper(opt_codec_ctx, td, constraints,
+				   &tmpintptr, pd);
+	if(rval.code == RC_OK) {
+		if((specs&&specs->field_unsigned)
+			? asn_INTEGER2ulong(&tmpint, (unsigned long *)native)
+			: asn_INTEGER2long(&tmpint, native))
+			rval.code = RC_FAIL;
+		else
+			ASN_DEBUG("NativeInteger %s got value %ld",
+				td->name, *native);
+	}
+	ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+
+	return rval;
+}
+
 asn_enc_rval_t
 NativeInteger_encode_uper(asn_TYPE_descriptor_t *td,
 	asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
@@ -291,6 +329,32 @@
 	return er;
 }
 
+asn_enc_rval_t
+NativeInteger_encode_aper(
+	asn_TYPE_descriptor_t *td,
+	asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
+
+	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+	asn_enc_rval_t er;
+	long native;
+	INTEGER_t tmpint;
+
+	if(!sptr) _ASN_ENCODE_FAILED;
+
+	native = *(long *)sptr;
+
+	ASN_DEBUG("Encoding NativeInteger %s %ld (APER)", td->name, native);
+
+	memset(&tmpint, 0, sizeof(tmpint));
+	if((specs&&specs->field_unsigned)
+		? asn_ulong2INTEGER(&tmpint, native)
+		: asn_long2INTEGER(&tmpint, native))
+		_ASN_ENCODE_FAILED;
+	er = INTEGER_encode_aper(td, constraints, &tmpint, po);
+	ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_INTEGER, &tmpint);
+	return er;
+}
+
 /*
  * INTEGER specific human-readable output.
  */