X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Packets%2FAuxParser.hh;h=fdf47c84add4bdafa187401bea3e7fcefa148a9e;hb=7a5841bb928db440280cf91bbb3ea0230fd0e911;hp=162657e15ef37bd4a44c4144c51254e1b7f48a92;hpb=4ee78597a1dae53669f5295cbb686c58146d2449;p=senf.git

diff --git a/Packets/AuxParser.hh b/Packets/AuxParser.hh
index 162657e..fdf47c8 100644
--- a/Packets/AuxParser.hh
+++ b/Packets/AuxParser.hh
@@ -40,63 +40,112 @@
 namespace senf {
 namespace detail {
 
+    /** \brief Internal: Prefix aux-parser policy
+
+        Place auxiliary field directly before a container/collection.
+     */
     template <class P>
     struct PrefixAuxParserPolicy
     {
         typedef PrefixAuxParserPolicy WrapperPolicy;
-        typedef P ParserType;
+        typedef PrefixAuxParserPolicy ParserPolicy;
 
-        static PacketParserBase::size_type const aux_bytes = ParserType::fixed_bytes;
+        static PacketParserBase::size_type const aux_bytes = P::fixed_bytes;
         
-        ParserType aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        typename P::value_type aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        void aux(typename P::value_type const & v, PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
         PacketParserBase::data_iterator adjust(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
     };
 
+    /** \brief Internal: Fixed distance aux-parser policy
+
+        Place auxiliary field a fixed distance before the container/collection
+     */
     template <class P, unsigned Dist>
     struct FixedAuxParserPolicy
     {
         typedef FixedAuxParserPolicy WrapperPolicy;
-        typedef P ParserType;
+        typedef FixedAuxParserPolicy ParserPolicy;
 
         static PacketParserBase::size_type const aux_bytes = 0;
         
-        ParserType aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        typename P::value_type aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        void aux(typename P::value_type const & v, PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
         PacketParserBase::data_iterator adjust(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
     };
 
     template <class P> struct DynamicWrapperAuxParserPolicy;
     
+    /** \brief Internal: Dynamic aux-parser policy
+
+        Place auxiliary field at a variable distance before the container/collection
+     */
     template <class P>
     struct DynamicAuxParserPolicy
     {
         typedef DynamicWrapperAuxParserPolicy<P> WrapperPolicy;
-        typedef P ParserType;
+        typedef DynamicAuxParserPolicy<P> ParserPolicy;
 
         static PacketParserBase::size_type const aux_bytes = 0;
 
-        DynamicAuxParserPolicy(ParserType p);
+        DynamicAuxParserPolicy(P p);
         DynamicAuxParserPolicy(WrapperPolicy const & other);
         
-        ParserType aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        typename P::value_type aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        void aux(typename P::value_type const & v, PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
         PacketParserBase::data_iterator adjust(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
 
-        ParserType p_;
+        mutable P p_;
     };
 
+    /** \brief Internal: Dynamic aux-parser policy (container wrapper)
+
+        Place auxiliary field at a variable distance before the container/collection. This is the
+        wrapper policy used by DynamicAuxParserPolicy
+     */
     template <class P>
     struct DynamicWrapperAuxParserPolicy
     {
+        typedef DynamicWrapperAuxParserPolicy<P> WrapperPolicy;
         typedef DynamicAuxParserPolicy<P> ParserPolicy;
-        typedef P ParserType;
 
         static PacketParserBase::size_type const aux_bytes = 0;
 
         DynamicWrapperAuxParserPolicy(ParserPolicy const & other);
         
-        ParserType aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        typename P::value_type aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        void aux(typename P::value_type const & v, PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
         PacketParserBase::data_iterator adjust(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
 
-        SafePacketParserWrapper<ParserType> p_;
+        mutable SafePacketParserWrapper<P> p_;
+    };
+
+    /** \brief Internal: Apply transformation to arbitrary aux-parser policy
+
+        Transform must statisfy the interface
+        \code
+        struct Transform
+        {
+            typedef unspecified value_type;
+            static value_type get(unspecified v);
+            static unspecified set(value_type v);
+        };
+        \endcode
+     */
+    template <class Policy, class Transform>
+    struct TransformAuxParserPolicy
+        : public Policy
+    {
+        typedef TransformAuxParserPolicy<typename Policy::WrapperPolicy, Transform> WrapperPolicy;
+        typedef TransformAuxParserPolicy<typename Policy::ParserPolicy, Transform> ParserPolicy;
+
+        static PacketParserBase::size_type const aux_bytes = Policy::aux_bytes;
+        
+        TransformAuxParserPolicy();
+        template <class Arg> TransformAuxParserPolicy(Arg const & arg);
+
+        typename Transform::value_type aux(PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
+        void aux(typename Transform::value_type const & v, PacketParserBase::data_iterator i, PacketParserBase::state_type s) const;
     };
 }}