//
// System.Security.Cryptography.AsnEncodedDataEnumerator
//
// Author:
// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2003 Motus Technologies Inc. (http://www.motus.com)
// Copyright (C) 2004 Novell Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0 && SECURITY_DEP
using System.Collections;
namespace System.Security.Cryptography{
public sealed class AsnEncodedDataEnumerator : IEnumerator {
private AsnEncodedDataCollection _collection;
private int _position;
// note: couldn't reuse the IEnumerator from ArrayList because
// it doesn't throw the same exceptions
internal AsnEncodedDataEnumerator (AsnEncodedDataCollection collection)
{
_collection = collection;
_position = -1;
}
// properties
public AsnEncodedData Current {
get {
if (_position < 0)
throw new ArgumentOutOfRangeException ();
return (AsnEncodedData) _collection [_position];
}
}
object IEnumerator.Current {
get {
if (_position < 0)
throw new ArgumentOutOfRangeException ();
return _collection [_position];
}
}
// methods
public bool MoveNext ()
{
if (++_position < _collection.Count)
return true;
else {
// strangely we must always be able to return the last entry
_position = _collection.Count - 1;
return false;
}
}
public void Reset ()
{
_position = -1;
}
}
}
#endif
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