-// Copyright (C) 2007
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// $Id$
+//
+// Copyright (C) 2007
+// 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
#include <boost/utility.hpp>
#include <boost/type_traits.hpp>
#include <boost/iterator/iterator_facade.hpp>
-#include "Utils/SafeBool.hh"
+#include "../Utils/safe_bool.hh"
+#include "../Utils/Exception.hh"
#include "PacketTypes.hh"
//#include "PacketData.mpp"
///\name Sequence interface to raw data
///@{
- iterator begin() const;
- iterator end() const;
- size_type size() const;
- bool empty() const;
- byte operator[](size_type n) const;
- byte & operator[](size_type n);
+ iterator begin() const; ///< Return iterator to beginning
+ /**< Returns an <em>random access iterator</em> referring to the
+ first byte of the packet data. */
+ iterator end() const; ///< Return iterator to end
+ /**< Returns an <em>random access iterator</em> referring to the
+ byte past the end of the packet data. */
+ size_type size() const; ///< Returns the number of bytes in the packet data.
+ bool empty() const; ///< Test whether the packet data is empty.
+ /**< Returns whether the packet data is empty, i.e. whether its size
+ is 0. This function does not modify the content of the packet
+ data in any way. To clear the content use clear() */
+ byte operator[](size_type n) const; ///< Access byte in the packet data
+ byte & operator[](size_type n); ///< Access byte in the packet data
// Modifying the raw packet data
// only academic since what should an empty packet be good for ?
void insert(iterator pos, byte v);
void insert(iterator pos, size_type n, byte v);
+# ifndef DOXYGEN
template <class InputIterator>
void insert(iterator pos, InputIterator f, InputIterator l,
typename boost::disable_if< boost::is_convertible<InputIterator,size_type> >::type * = 0);
+# else
+ template <class InputIterator>
+ void insert(iterator pos, InputIterator f, InputIterator l);
+# endif
void erase(iterator pos);
void erase(iterator first, iterator last);
- void clear();
+ void clear(); ///< All bytes of the packet data dropped, leaving the container with a size of 0. */
void resize(size_type n, byte v=0);
class PacketParserBase;
- struct TruncatedPacketException : public std::exception
- { virtual char const * what() const throw() { return "truncated packet"; } };
+ /** \brief Invalid packet data access
+
+ This exception is signaled whenever an operation tries to access an out-of-bounds data
+ byte. If the packet has been implemented correctly, this signals a malformed packet.
+ */
+ struct TruncatedPacketException : public senf::Exception
+ { TruncatedPacketException() : senf::Exception("truncated packet"){} };
+ /** \brief Re-validating data iterator
+
+ This class is a wrapper around a PacketData::iterator instance. It will revalidate the
+ iterator on every access. This keeps the iterator valid even when the data container is
+ resized and thereby possibly relocated. The iterator will always point to the byte at the
+ same offset from the packets beginning. If data is inserted before this iterators position,
+ the data pointed to will of course change.
+
+ For this to work, the safe_data_iterator must be initialized with the container to which the
+ iterator belongs. After this initialization it can be used like any other iterator.
+ */
class safe_data_iterator
: public boost::iterator_facade< safe_data_iterator,
PacketData::value_type,
boost::random_access_traversal_tag >,
- public ComparableSafeBool<safe_data_iterator>
+ public comparable_safe_bool<safe_data_iterator>
{
public:
typedef PacketData::size_type size_type;
- safe_data_iterator();
- explicit safe_data_iterator(PacketData & data);
+ safe_data_iterator(); ///< Make uninitialized iterator
+ explicit safe_data_iterator(PacketData & data);
+ ///< Construct iterator only setting the data container
safe_data_iterator(PacketData & data, PacketData::iterator i);
+ ///< Initialize iterator to given position
explicit safe_data_iterator(PacketParserBase const & parser);
+ ///< Initialize iterator from parser
+ /**< The iterator will point to the parsers start
+ position. */
- safe_data_iterator & operator=(PacketData::iterator i);
+ safe_data_iterator & operator=(PacketData::iterator i); ///< Assign iterator
+ /**< The iteator \a i must be from the container wo which \c
+ this iterator has been initialized. */
safe_data_iterator & operator=(PacketParserBase const & parser);
- operator PacketData::iterator() const;
+ ///< Assign iterator from parser
+ /**< The iterator will point to the parser start
+ position. */
+
+ operator PacketData::iterator() const; ///< Convert to iterator
- bool boolean_test() const;
+ bool boolean_test() const; ///< Check, if iterator is initialized
- PacketData & data() const;
+ PacketData & data() const; ///< Access data container
private:
friend class boost::iterator_core_access;
///////////////////////////////hh.e////////////////////////////////////////
#endif
-#if !defined(SENF_PACKETS_DECL_ONLY) && !defined(HH_PacketData_i_)
+#if !defined(HH_Packets__decls_) && !defined(HH_PacketData_i_)
#define HH_PacketData_i_
#include "PacketData.cci"
//#include "PacketData.ct"
// comment-column: 40
// End:
-// LocalWords: Fraunhofer Institut fuer offene Kommunikationssysteme FOKUS de
-// LocalWords: Kompetenzzentrum Satelitenkommunikation SatCom Bund berlios dil
-// LocalWords: PacketData hh STL PacketInterpreterBase PacketInterpreter
-// LocalWords: ingroup Structors
projects / senf.git / blobdiff