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/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