4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief PacketType non-inline template implementation */
26 //#include "PacketType.ih"
31 ///////////////////////////////ct.p////////////////////////////////////////
33 ///////////////////////////////////////////////////////////////////////////
34 // senf::PacketTypeMixin<Self,void>
37 prefix_ senf::PacketInterpreterBase::optional_range
38 senf::PacketTypeMixin<Self,void>::nextPacketRange(Packet p)
40 if (p.data().size() < Self::initSize())
41 return PacketTypeBase::no_range();
42 typename Self::size_type sz (Self::initHeadSize());
43 ///\idea This if condition could be replaced with a compile time switch by checking, wether
44 /// (the function address) Self::initHeadSize is different from PacketTypeBase::initHeadSize
45 if (sz == PacketTypeBase::size_type(-1))
46 return PacketTypeBase::range(boost::next(p.data().begin(),
47 bytes(p.as< ConcretePacket<Self> >().parser())),
50 // If we have a trailer, we do *not* use the 'bytes' value but initSize/initHeadSize, this
51 // is much safer since the bytes() value will probably not be very correct anyways (what
52 // should it return ? the size of the header only, the combined size of header and trailer
53 // or the size of the packet from header to trailer including payload?).
55 // So, the helper only works with fixed-size parsers if the packet has a trailer.
56 return PacketTypeBase::range(boost::next(p.data().begin(),sz),
57 boost::prior(p.data().end(),Self::initSize()-sz));
60 ///////////////////////////////ct.e////////////////////////////////////////
68 // c-file-style: "senf"
69 // indent-tabs-mode: nil
70 // ispell-local-dictionary: "american"
71 // compile-command: "scons -u test"