PoolItem.h

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#ifndef ZYPP_POOLITEM_H
#define ZYPP_POOLITEM_H

#include <iosfwd>
#include <functional>

#include "zypp/base/PtrTypes.h"
#include "zypp/ResObject.h"
#include "zypp/ResStatus.h"

namespace zypp
{ 

  class ResPool;

  namespace pool
  {
    class PoolImpl;
  }

  //
  //    CLASS NAME : PoolItem
  //
  class PoolItem
  {
    friend std::ostream & operator<<( std::ostream & str, const PoolItem & obj );

    public:
      class Impl;

    public:
      PoolItem();

      explicit PoolItem( const sat::Solvable & solvable_r );

      explicit PoolItem( const ResObject::constPtr & resolvable_r );

      ~PoolItem();

    public:
      ResStatus & status() const;

      ResStatus & statusReset() const;


      bool isUndetermined() const;

      bool isRelevant() const;

      bool isSatisfied() const;

      bool isBroken() const;

      bool isNeeded() const;

      bool isUnwanted() const;

    public:
      ResPool pool() const;

      sat::Solvable satSolvable() const
      { return resolvable() ? resolvable()->satSolvable() : sat::Solvable::noSolvable; }

      sat::Solvable buddy() const;

    public:
      ResObject::constPtr resolvable() const;

      operator ResObject::constPtr() const
      { return resolvable(); }

      ResObject::constPtr operator->() const
      { return resolvable(); }

      operator ResObject::constPtr::unspecified_bool_type() const
      { return resolvable(); }

    private:
      friend class Impl;
      friend class pool::PoolImpl;
      static PoolItem makePoolItem( const sat::Solvable & solvable_r );
      void setBuddy( sat::Solvable solv_r );
      explicit PoolItem( Impl * implptr_r );
      RW_pointer<Impl> _pimpl;

    private:
      friend class PoolItemSaver;
      void saveState() const;
      void restoreState() const;
      bool sameState() const;
  };

  std::ostream & operator<<( std::ostream & str, const PoolItem & obj );

  inline bool operator==( const PoolItem & lhs, const PoolItem & rhs )
  { return lhs.resolvable() == rhs.resolvable(); }

  inline bool operator==( const PoolItem & lhs, const ResObject::constPtr & rhs )
  { return lhs.resolvable() == rhs; }

  inline bool operator==( const ResObject::constPtr & lhs, const PoolItem & rhs )
  { return lhs == rhs.resolvable(); }


  inline bool operator!=( const PoolItem & lhs, const PoolItem & rhs )
  { return ! (lhs==rhs); }

  inline bool operator!=( const PoolItem & lhs, const ResObject::constPtr & rhs )
  { return ! (lhs==rhs); }

  inline bool operator!=( const ResObject::constPtr & lhs, const PoolItem & rhs )
  { return ! (lhs==rhs); }


  inline bool identical( const PoolItem & lhs, const PoolItem & rhs )
  { return lhs == rhs || lhs.satSolvable().identical( rhs.satSolvable() ); }

  inline bool identical( const PoolItem & lhs, sat::Solvable rhs )
  { return lhs.satSolvable().identical( rhs ); }

  inline bool identical( sat::Solvable lhs, const PoolItem & rhs )
  { return lhs.identical( rhs.satSolvable() ); }


  inline bool sameNVRA( const PoolItem & lhs, const PoolItem & rhs )
  { return lhs == rhs || lhs.satSolvable().sameNVRA( rhs.satSolvable() ); }

  inline bool sameNVRA( const PoolItem & lhs, sat::Solvable rhs )
  { return lhs.satSolvable().sameNVRA( rhs ); }

  inline bool sameNVRA( sat::Solvable lhs, const PoolItem & rhs )
  { return lhs.sameNVRA( rhs.satSolvable() ); }

  struct asPoolItem
  {
    typedef PoolItem result_type;

    PoolItem operator()( const sat::Solvable & solv_r ) const
    { return PoolItem( solv_r ); }
  };

} // namespace zypp
namespace std
{ 

  template<>
    inline bool less<zypp::PoolItem>::operator()( const zypp::PoolItem & lhs, const zypp::PoolItem & rhs ) const
    { return lhs.resolvable() < rhs.resolvable(); }

} // namespace zypp
#endif // ZYPP_POOLITEM_H