package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;

public class CRLDistPoint
    implements DEREncodable
{
    ASN1Sequence  seq = null;

    public static CRLDistPoint getInstance(
        ASN1TaggedObject obj,
        boolean          explicit)
    {
        return getInstance(ASN1Sequence.getInstance(obj, explicit));
    }

    public static CRLDistPoint getInstance(
        Object  obj)
    {
        if (obj instanceof CRLDistPoint)
        {
            return (CRLDistPoint)obj;
        }
        else if (obj instanceof ASN1Sequence)
        {
            return new CRLDistPoint((ASN1Sequence)obj);
        }

        throw new IllegalArgumentException("unknown object in factory");
    }
	
    public CRLDistPoint(
        ASN1Sequence seq)
    {
        this.seq = seq;
    }
    
    public CRLDistPoint(
        DistributionPoint[] points)
    {
        ASN1EncodableVector  v = new ASN1EncodableVector();

        for (int i = 0; i != points.length; i++)
        {
            v.add(points[i]);
        }

        seq = new DERSequence(v);
    }

	/**
	 * Return the distribution points making up the sequence.
	 * 
	 * @return DistributionPoint[]
	 */
	public DistributionPoint[] getDistributionPoints()
	{
		DistributionPoint[]	dp = new DistributionPoint[seq.size()];
		
		for (int i = 0; i != seq.size(); i++)
		{
			dp[i] = DistributionPoint.getInstance(seq.getObjectAt(i));
		}
		
		return dp;
	}
	
    /**
     * Produce an object suitable for an ASN1OutputStream.
     * <pre>
     * CRLDistPoint ::= SEQUENCE SIZE {1..MAX} OF DistributionPoint
     * </pre>
     */
    public DERObject getDERObject()
    {
        return seq;
    }
}