PoolItem.h

Go to the documentation of this file.

/*---------------------------------------------------------------------\
|                          ____ _   __ __ ___                          |
|                         |__  / \ / / . \ . \                         |
|                           / / \ V /|  _/  _/                         |
|                          / /__ | | | | | |                           |
|                         /_____||_| |_| |_|                           |
|                                                                      |
\---------------------------------------------------------------------*/
#ifndef ZYPP_POOLITEM_H
#define ZYPP_POOLITEM_H

#include <iosfwd>
#include <functional>

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

#include "zypp/sat/SolvableType.h"
#include "zypp/ResStatus.h"

namespace zypp
{
  class ResPool;
  namespace pool
  {
    class PoolImpl;
  }
  class PoolItem : public sat::SolvableType<PoolItem>
  {
    friend std::ostream & operator<<( std::ostream & str, const PoolItem & obj );
    public:
      PoolItem();

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

      template <class Derived>
      explicit PoolItem( const SolvableType<Derived> & solvable_r )
      : PoolItem( solvable_r.satSolvable() )
      {}

      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;

      explicit operator sat::Solvable() 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(); }

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

    private:
      friend struct 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); }

  struct asPoolItem
  {
    typedef PoolItem result_type;

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

} // namespace zypp
#endif // ZYPP_POOLITEM_H