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using System;
namespace Org.BouncyCastle.Asn1
{
public class BerSequence
: DLSequence
{
public static new readonly BerSequence Empty = new BerSequence();
public static new BerSequence Concatenate(params Asn1Sequence[] sequences)
{
if (sequences == null)
return Empty;
switch (sequences.Length)
{
case 0:
return Empty;
case 1:
return FromSequence(sequences[0]);
default:
return FromElements(ConcatenateElements(sequences));
}
}
internal static new BerSequence FromElements(Asn1Encodable[] elements)
{
return elements.Length < 1 ? Empty : new BerSequence(elements, clone: false);
}
public static new BerSequence FromSequence(Asn1Sequence sequence)
{
if (sequence is BerSequence berSequence)
return berSequence;
return FromElements(sequence.m_elements);
}
public static new BerSequence FromVector(Asn1EncodableVector elementVector)
{
return elementVector.Count < 1 ? Empty : new BerSequence(elementVector);
}
/**
* create an empty sequence
*/
public BerSequence()
: base()
{
}
/**
* create a sequence containing one object
*/
public BerSequence(Asn1Encodable element)
: base(element)
{
}
/**
* create a sequence containing two objects
*/
public BerSequence(Asn1Encodable element1, Asn1Encodable element2)
: base(element1, element2)
{
}
public BerSequence(params Asn1Encodable[] elements)
: base(elements)
{
}
/**
* create a sequence containing a vector of objects.
*/
public BerSequence(Asn1EncodableVector elementVector)
: base(elementVector)
{
}
internal BerSequence(Asn1Encodable[] elements, bool clone)
: base(elements, clone)
{
}
internal override IAsn1Encoding GetEncoding(int encoding)
{
if (Asn1OutputStream.EncodingBer != encoding)
return base.GetEncoding(encoding);
return new ConstructedILEncoding(Asn1Tags.Universal, Asn1Tags.Sequence,
Asn1OutputStream.GetContentsEncodings(encoding, m_elements));
}
internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
{
if (Asn1OutputStream.EncodingBer != encoding)
return base.GetEncodingImplicit(encoding, tagClass, tagNo);
return new ConstructedILEncoding(tagClass, tagNo,
Asn1OutputStream.GetContentsEncodings(encoding, m_elements));
}
internal override DerBitString ToAsn1BitString()
{
return new BerBitString(GetConstructedBitStrings());
}
internal override DerExternal ToAsn1External()
{
// TODO[asn1] There is currently no BerExternal (or Asn1External)
return new DLExternal(this);
}
internal override Asn1OctetString ToAsn1OctetString()
{
return new BerOctetString(GetConstructedOctetStrings());
}
internal override Asn1Set ToAsn1Set()
{
return new BerSet(false, m_elements);
}
}
}
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