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using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1
{
/**
* A Der encoded set object
*/
public class DerSet
: Asn1Set
{
public static readonly DerSet Empty = new DerSet();
public static DerSet FromVector(Asn1EncodableVector elementVector)
{
return elementVector.Count < 1 ? Empty : new DerSet(elementVector);
}
/**
* create an empty set
*/
public DerSet()
: base()
{
}
/**
* @param obj - a single object that makes up the set.
*/
public DerSet(Asn1Encodable element)
: base(element)
{
}
public DerSet(params Asn1Encodable[] elements)
: base(elements, true)
{
}
internal DerSet(Asn1Encodable[] elements, bool doSort)
: base(elements, doSort)
{
}
/**
* @param v - a vector of objects making up the set.
*/
public DerSet(Asn1EncodableVector elementVector)
: base(elementVector, true)
{
}
internal DerSet(Asn1EncodableVector elementVector, bool doSort)
: base(elementVector, doSort)
{
}
internal DerSet(bool isSorted, Asn1Encodable[] elements)
: base(isSorted, elements)
{
}
internal override IAsn1Encoding GetEncoding(int encoding)
{
return new ConstructedDLEncoding(Asn1Tags.Universal, Asn1Tags.Set, GetSortedDerEncodings());
}
internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
{
return new ConstructedDLEncoding(tagClass, tagNo, GetSortedDerEncodings());
}
internal override DerEncoding GetEncodingDer()
{
return new ConstructedDerEncoding(Asn1Tags.Universal, Asn1Tags.Set, GetSortedDerEncodings());
}
internal override DerEncoding GetEncodingDerImplicit(int tagClass, int tagNo)
{
return new ConstructedDerEncoding(tagClass, tagNo, GetSortedDerEncodings());
}
private DerEncoding[] GetSortedDerEncodings()
{
return Objects.EnsureSingletonInitialized(ref m_sortedDerEncodings, m_elements, CreateSortedDerEncodings);
}
private static DerEncoding[] CreateSortedDerEncodings(Asn1Encodable[] elements)
{
var derEncodings = Asn1OutputStream.GetContentsEncodingsDer(elements);
if (derEncodings.Length > 1)
{
Array.Sort(derEncodings);
}
return derEncodings;
}
}
}
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