2 // System.Security.Cryptography.AsnEncodedDataEnumerator
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004 Novell Inc. (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 #if NET_2_0 && SECURITY_DEP
32 using System.Collections;
34 namespace System.Security.Cryptography {
36 public sealed class AsnEncodedDataEnumerator : IEnumerator {
38 private AsnEncodedDataCollection _collection;
39 private int _position;
41 // note: couldn't reuse the IEnumerator from ArrayList because
42 // it doesn't throw the same exceptions
43 internal AsnEncodedDataEnumerator (AsnEncodedDataCollection collection)
45 _collection = collection;
51 public AsnEncodedData Current {
54 throw new ArgumentOutOfRangeException ();
55 return (AsnEncodedData) _collection [_position];
59 object IEnumerator.Current {
62 throw new ArgumentOutOfRangeException ();
63 return _collection [_position];
69 public bool MoveNext ()
71 if (++_position < _collection.Count)
74 // strangely we must always be able to return the last entry
75 _position = _collection.Count - 1;