/// <summary> Decode an LBER encoded value into an Asn1Object from an InputStream.
///
/// This method also returns the total length of this encoded
/// Asn1Object (length of type + length of length + length of content)
/// in the parameter len. This information is helpful when decoding
/// structured types.
/// </summary>
public virtual Asn1Object decode(System.IO.Stream in_Renamed, int[] len)
{
asn1ID.reset(in_Renamed);
asn1Len.reset(in_Renamed);
int length = asn1Len.Length;
len[0] = asn1ID.EncodedLength + asn1Len.EncodedLength + length;
if (asn1ID.Universal)
{
switch (asn1ID.Tag)
{
case Asn1Sequence.TAG:
return(new Asn1Sequence(this, in_Renamed, length));
case Asn1Set.TAG:
return(new Asn1Set(this, in_Renamed, length));
case Asn1Boolean.TAG:
return(new Asn1Boolean(this, in_Renamed, length));
case Asn1Integer.TAG:
return(new Asn1Integer(this, in_Renamed, length));
case Asn1OctetString.TAG:
return(new Asn1OctetString(this, in_Renamed, length));
case Asn1Enumerated.TAG:
return(new Asn1Enumerated(this, in_Renamed, length));
case Asn1Null.TAG:
return(new Asn1Null()); // has no content to decode.
/* Asn1 TYPE NOT YET SUPPORTED
* case Asn1BitString.TAG:
* return new Asn1BitString(this, in, length);
* case Asn1ObjectIdentifier.TAG:
* return new Asn1ObjectIdentifier(this, in, length);
* case Asn1Real.TAG:
* return new Asn1Real(this, in, length);
* case Asn1NumericString.TAG:
* return new Asn1NumericString(this, in, length);
* case Asn1PrintableString.TAG:
* return new Asn1PrintableString(this, in, length);
* case Asn1TeletexString.TAG:
* return new Asn1TeletexString(this, in, length);
* case Asn1VideotexString.TAG:
* return new Asn1VideotexString(this, in, length);
* case Asn1IA5String.TAG:
* return new Asn1IA5String(this, in, length);
* case Asn1GraphicString.TAG:
* return new Asn1GraphicString(this, in, length);
* case Asn1VisibleString.TAG:
* return new Asn1VisibleString(this, in, length);
* case Asn1GeneralString.TAG:
* return new Asn1GeneralString(this, in, length);
*/
default:
throw new System.IO.EndOfStreamException("Unknown tag"); // !!! need a better exception
}
}
else
{
// APPLICATION or CONTEXT-SPECIFIC tag
return(new Asn1Tagged(this, in_Renamed, length, (Asn1Identifier)asn1ID.Clone()));
}
}