public override int encodeEnumItem(object enumConstant, Type enumClass, Stream stream, ElementInfo elementInfo)
{
ASN1EnumItem enumObj = elementInfo.getAttribute <ASN1EnumItem>();
//int min = 0, max = enumClass.GetFields().Length, val = 0;
int min = 0, max = 0, val = 0;
foreach (FieldInfo enumItem in enumClass.GetFields())
{
if (CoderUtils.isAttributePresent <ASN1EnumItem>(enumItem))
{
ASN1EnumItem enumItemObj = CoderUtils.getAttribute <ASN1EnumItem>(enumItem);
if (enumItemObj.Tag == enumObj.Tag)
{
val = max;
}
max++; //val++;
}
}
if (max > 0)
{
return(encodeConstraintNumber(val, min, max, (BitArrayOutputStream)stream));
}
else
{
throw new Exception("Unable to present any enum item!");
}
}
public override void setParentAnnotated(ICustomAttributeProvider parent)
{
if (parent != null)
{
if (CoderUtils.isAttributePresent <ASN1String>(parent))
{
ASN1String value = CoderUtils.getAttribute <ASN1String>(parent);
stringType = value.StringType;
}
}
}
/// <summary>
/// Encoding of the choice structure
/// ITU-T X.691. 22.
/// NOTE – (Tutorial) A choice type is encoded by encoding an index specifying
/// the chosen alternative. This is encoded as for a constrained integer
/// (unless the extension marker is present in the choice type,
/// in which case it is a normally small non-negative whole number)
/// and would therefore typically occupy a fixed length bit-field of the
/// minimum number of bits needed to encode the index. (Although it could
/// in principle be arbitrarily large.) This is followed by the encoding
/// of the chosen alternative, with alternatives that are extension
/// additions encoded as if they were the value of an open type field.
/// Where the choice has only one alternative, there is no encoding
/// for the index.
/// </summary>
public override int encodeChoice(object obj, Stream stream, ElementInfo elementInfo)
{
int resultSize = 0;
doAlign(stream);
ElementInfo info = null;
int elementIndex = 0;
int fieldIdx = 0;
foreach (PropertyInfo field in elementInfo.getProperties(obj.GetType()))
{
info = new ElementInfo();
info.AnnotatedClass = field;
elementIndex++;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = elementInfo.PreparedInfo.getPropertyMetadata(fieldIdx);
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
if (invokeSelectedMethodForField(field, obj, info))
{
break;
}
else
{
info = null;
}
fieldIdx++;
}
if (info == null)
{
throw new ArgumentException("The choice '" + obj + "' does not have a selected item!");
}
object invokeObjResult = invokeGetterMethodForField((PropertyInfo)info.AnnotatedClass, obj, info);
resultSize += encodeChoicePreamble(obj, stream, elementIndex, elementInfo);
resultSize += encodeClassType(invokeObjResult, stream, info);
return(resultSize);
}
public override DecodedObject <object> decodeChoice(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
object choice = createInstanceForElement(objectClass, elementInfo);
skipAlignedBits(stream);
PropertyInfo[] fields = elementInfo.getProperties(objectClass);
int elementIndex = (int)decodeConstraintNumber(1, fields.Length, (BitArrayInputStream)stream);
DecodedObject <object> val = null;
for (int i = 0; i < elementIndex && i < fields.Length; i++)
{
if (i + 1 == elementIndex)
{
PropertyInfo field = fields[i];
ElementInfo info = new ElementInfo();
info.AnnotatedClass = field;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = elementInfo.PreparedInfo.getPropertyMetadata(i);
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
val = decodeClassType(decodedTag, field.PropertyType, info, stream);
if (val != null)
{
invokeSelectMethodForField(field, choice, val.Value, info);
}
break;
}
;
}
if (val == null && !CoderUtils.isOptional(elementInfo))
{
throw new ArgumentException("The choice '" + objectClass + "' does not have a selected item!");
}
else
{
return(new DecodedObject <object>(choice));
}
}
public override DecodedObject <object> decodeEnumItem(DecodedObject <object> decodedTag, Type objectClass, Type enumClass, ElementInfo elementInfo, Stream stream)
{
//int min = 0, max = enumClass.GetFields().Length;
int min = 0, max = 0;
foreach (FieldInfo enumItem in enumClass.GetFields())
{
if (CoderUtils.isAttributePresent <ASN1EnumItem>(enumItem))
{
max++;
}
}
if (max <= 0)
{
throw new Exception("Unable to present any enum item!");
}
int enumItemIdx = (int)decodeConstraintNumber(min, max - 1, (BitArrayInputStream)stream);
DecodedObject <object> result = new DecodedObject <object>();
int idx = 0;
foreach (FieldInfo enumItem in enumClass.GetFields())
{
if (CoderUtils.isAttributePresent <ASN1EnumItem>(enumItem))
{
if (idx++ == enumItemIdx)
{
ASN1EnumItem enumItemObj = CoderUtils.getAttribute <ASN1EnumItem>(enumItem);
result.Value = enumItemObj.Tag;
break;
}
}
}
return(result);
}
protected virtual DecodedObject <object> decodeSet(DecodedObject <object> decodedTag, System.Type objectClass, ElementInfo elementInfo, int len, System.IO.Stream stream)
{
object sequence = createInstanceForElement(objectClass, elementInfo);
initDefaultValues(sequence);
DecodedObject <object> fieldTag = null;
int sizeOfSequence = 0;
int maxSeqLen = elementInfo.MaxAvailableLen;
if (maxSeqLen == -1 || maxSeqLen > 0)
{
fieldTag = decodeTag(stream);
if (fieldTag != null)
{
sizeOfSequence += fieldTag.Size;
}
}
PropertyInfo[] fields =
elementInfo.getProperties(objectClass);
bool fieldEncoded = false;
do
{
for (int i = 0; i < fields.Length; i++)
{
PropertyInfo field = fields[i];
DecodedObject <object> obj = decodeSequenceField(
fieldTag, sequence, i, field, stream, elementInfo, false
);
if (obj != null)
{
fieldEncoded = true;
sizeOfSequence += obj.Size;
bool isAny = false;
if (i + 1 == fields.Length - 1)
{
ElementInfo info = new ElementInfo();
info.AnnotatedClass = (fields[i + 1]);
info.MaxAvailableLen = (elementInfo.MaxAvailableLen);
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = (elementInfo.PreparedInfo.getPropertyMetadata(i + 1));
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(fields[i + 1]);
}
isAny = CoderUtils.isAnyField(fields[i + 1], info);
}
if (maxSeqLen != -1)
{
elementInfo.MaxAvailableLen = (maxSeqLen - sizeOfSequence);
}
if (!isAny)
{
if (i < fields.Length - 1)
{
if (maxSeqLen == -1 || elementInfo.MaxAvailableLen > 0)
{
fieldTag = decodeTag(stream);
if (fieldTag != null)
{
sizeOfSequence += fieldTag.Size;
}
else
{
break;
}
}
else
{
fieldTag = null;
}
}
else
{
break;
}
}
}
;
}
}while (sizeOfSequence < len && fieldEncoded);
return(new DecodedObject <object>(sequence, sizeOfSequence));
}
