X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Packets%2FPacket.cti;h=ed032da0160e70bf22d74929bec68ac5b752a058;hb=be4e99b96b305cb8f8c6a00a0098392483089812;hp=ce2c0fb07f334d186b9f4736c27b4177611ef195;hpb=6116cb96ea7bdcb42b7d12165a05fcbe0687226d;p=senf.git

diff --git a/Packets/Packet.cti b/Packets/Packet.cti
index ce2c0fb..ed032da 100644
--- a/Packets/Packet.cti
+++ b/Packets/Packet.cti
@@ -1,8 +1,8 @@
 // $Id$
 //
 // Copyright (C) 2007 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// Fraunhofer Institute for Open Communication Systems (FOKUS) 
+// Competence Center NETwork research (NET), St. Augustin, GERMANY 
 //     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
@@ -60,6 +60,8 @@ template <class OtherPacket>
 prefix_ OtherPacket senf::Packet::as()
     const
 {
+    if (!is<OtherPacket>())
+        throw std::bad_cast();
     return OtherPacket(ptr()->as<typename OtherPacket::type>());
 }
 
@@ -67,81 +69,30 @@ template <class OtherPacket>
 prefix_ OtherPacket senf::Packet::next()
     const
 {
-    OtherPacket p (next<OtherPacket>(nothrow));
-    if (!p) throw InvalidPacketChainException();
-    return p;
-}
-
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::next(NoThrow_t)
-    const
-{
-    Packet p (next());
-    return p ? p.findNext<OtherPacket>(nothrow) : OtherPacket();
+    Packet p (next())
+    return p ? p.as<OtherPacket>() : OtherPacket();
 }
 
 template <class OtherPacket>
 prefix_ OtherPacket senf::Packet::prev()
     const
 {
-    OtherPacket p (prev<OtherPacket>(nothrow));
-    if (!p) throw InvalidPacketChainException();
-    return p;
-}
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::prev(NoThrow_t)
-    const
-{
     Packet p (prev());
-    return p ? p.findPrev<OtherPacket>(nothrow) : OtherPacket();
-}
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::findNext()
-    const
-{
-    OtherPacket p (findNext<OtherPacket>(nothrow));
-    if (!p) throw InvalidPacketChainException();
-    return p;
-}
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::findPrev()
-    const
-{
-    OtherPacket p (findPrev<OtherPacket>(nothrow));
-    if (!p) throw InvalidPacketChainException();
-    return p;
+    return p ? p.as<OtherPacket>() : OtherPacket();
 }
 
 template <class OtherPacket>
 prefix_ OtherPacket senf::Packet::last()
     const
 {
-    return last().findPrev<OtherPacket>();
-}
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::last(NoThrow_t)
-    const
-{
-    return last().findPrev<OtherPacket>(nothrow);
+    return last().as<OtherPacket>();
 }
 
 template <class OtherPacket>
 prefix_ OtherPacket senf::Packet::first()
     const
 {
-    return first().findNext<OtherPacket>();
-}
-
-template <class OtherPacket>
-prefix_ OtherPacket senf::Packet::first(NoThrow_t)
-    const
-{
-    return first().findNext<OtherPacket>(nothrow);
+    return first().as<OtherPacket>();
 }
 
 ///////////////////////////////////////////////////////////////////////////