libraries/spongycastle/core/src/main/java/org/spongycastle/asn1/LazyConstructionEnumeration.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43

package org.spongycastle.asn1;

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

class LazyConstructionEnumeration
    implements Enumeration
{
    private ASN1InputStream aIn;
    private Object          nextObj;

    public LazyConstructionEnumeration(byte[] encoded)
    {
        aIn = new ASN1InputStream(encoded, true);
        nextObj = readObject();
    }

    public boolean hasMoreElements()
    {
        return nextObj != null;
    }

    public Object nextElement()
    {
        Object o = nextObj;

        nextObj = readObject();

        return o;
    }

    private Object readObject()
    {
        try
        {
            return aIn.readObject();
        }
        catch (IOException e)
        {
            throw new ASN1ParsingException("malformed DER construction: " + e, e);
        }
    }
}