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DSS Model contains the data model representation for DSS

There is a newer version: 6.0.d4j.2

package port.org.bouncycastle.asn1;

import java.io.IOException;
import java.util.Enumeration;

/**
 * Note: this class is for processing DER/DL encoded sequences only.
 */
class LazyEncodedSequence extends ASN1Sequence {
	private byte[] encoded;

	LazyEncodedSequence(byte[] encoded) throws IOException {
		this.encoded = encoded;
	}

	private void parse() {
		Enumeration en = new LazyConstructionEnumeration(encoded);

		while (en.hasMoreElements()) {
			seq.addElement(en.nextElement());
		}

		encoded = null;
	}

	@Override
	public synchronized ASN1Encodable getObjectAt(int index) {
		if (encoded != null) {
			parse();
		}

		return super.getObjectAt(index);
	}

	@Override
	public synchronized Enumeration getObjects() {
		if (encoded == null) {
			return super.getObjects();
		}

		return new LazyConstructionEnumeration(encoded);
	}

	@Override
	public synchronized int size() {
		if (encoded != null) {
			parse();
		}

		return super.size();
	}

	@Override
	ASN1Primitive toDERObject() {
		if (encoded != null) {
			parse();
		}

		return super.toDERObject();
	}

	@Override
	ASN1Primitive toDLObject() {
		if (encoded != null) {
			parse();
		}

		return super.toDLObject();
	}

	@Override
	int encodedLength() throws IOException {
		if (encoded != null) {
			return 1 + StreamUtil.calculateBodyLength(encoded.length) + encoded.length;
		} else {
			return super.toDLObject().encodedLength();
		}
	}

	@Override
	void encode(ASN1OutputStream out) throws IOException {
		if (encoded != null) {
			out.writeEncoded(BERTags.SEQUENCE | BERTags.CONSTRUCTED, encoded);
		} else {
			super.toDLObject().encode(out);
		}
	}
}