ParserContainerBase.hxx

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#ifndef RESIP_ParserContainerBase_hxx
#define RESIP_ParserContainerBase_hxx
 
#include "resip/stack/ParserCategory.hxx"
#include <iosfwd>
#include "resip/stack/HeaderTypes.hxx"
#include <vector>
 
#include "rutil/StlPoolAllocator.hxx"
#include "rutil/PoolBase.hxx"
 
namespace resip
{
 
class HeaderFieldValueList;
class PoolBase;
 
class ParserContainerBase
{
   public:
      typedef size_t size_type;
 
      ParserContainerBase(Headers::Type type = Headers::UNKNOWN);
 
      ParserContainerBase(Headers::Type type,
                           PoolBase& pool);
 
      ParserContainerBase(const ParserContainerBase& rhs);
 
      ParserContainerBase(const ParserContainerBase& rhs,
                           PoolBase& pool);
 
      ParserContainerBase& operator=(const ParserContainerBase& rhs);
 
      virtual ~ParserContainerBase();
 
      inline void clear() {freeParsers(); mParsers.clear();}
 
      virtual ParserContainerBase* clone() const = 0;
 
      inline size_t size() const {return mParsers.size();}
 
      inline bool empty() const {return mParsers.empty();}
 
      EncodeStream& encode(const Data& headerName, EncodeStream& str) const;
 
      std::ostream& encode(Headers::Type type,std::ostream& str) const;
 
      EncodeStream& encodeEmbedded(const Data& headerName, EncodeStream& str) const;
 
      void pop_front();
 
      void pop_back();
 
      void append(const ParserContainerBase& rhs);
 
      virtual void parseAll()=0;
 
      bool getHeaderValueByIndex(size_t index, Data& headerValue) const;
 
   protected:
      const Headers::Type mType;
 
      class HeaderKit
      {
         public:
            static const HeaderKit Empty;
 
            HeaderKit(): pc(0){}
 
            // Poor man's move c'tor, watch out!
            HeaderKit(const HeaderKit& orig) 
            : pc(orig.pc),
               hfv(orig.hfv)
            {
               HeaderKit& nc_orig = const_cast<HeaderKit&>(orig);
               std::swap(nc_orig.pc, pc);
               hfv.swap(nc_orig.hfv);
            }
 
            // Poor man's move semantics, watch out!
            HeaderKit& operator=(const HeaderKit& rhs)
            {
               if(this!=&rhs)
               {
                  HeaderKit& nc_orig = const_cast<HeaderKit&>(rhs);
                  std::swap(nc_orig.pc, pc);
                  hfv.swap(nc_orig.hfv);
               }
               return *this;
            }
            
            ~HeaderKit()
            {}
            
            EncodeStream& encode(EncodeStream& str) const
            {
               if(pc)
               {
                  pc->encode(str);
               }
               else
               {
                  hfv.encode(str);
               }
               return str;
            }
            
            ParserCategory* pc;
            HeaderFieldValue hfv;
      };
 
      typedef std::vector<HeaderKit, StlPoolAllocator<HeaderKit, PoolBase> > Parsers;
      Parsers mParsers;
      PoolBase* mPool;
      
      void copyParsers(const Parsers& parsers);
 
      void freeParsers();
      
      inline void freeParser(HeaderKit& kit)
      {
         if(kit.pc)
         {
            kit.pc->~ParserCategory();
            if(mPool)
            {
               mPool->deallocate(kit.pc);
            }
            else
            {
               ::operator delete(kit.pc);
            }
            kit.pc=0;
         }
      }
 
      inline ParserCategory* makeParser(const ParserCategory& orig)
      {
         return orig.clone(mPool);
      }
};
 
}
 
#endif
 
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