PoolItemBest.h

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#ifndef ZYPP_POOLITEMBEST_H
#define ZYPP_POOLITEMBEST_H

#include <iosfwd>

#include "zypp/base/PtrTypes.h"
#include "zypp/base/Function.h"
#include "zypp/base/Iterator.h"
#include "zypp/base/Hash.h"

#include "zypp/PoolItem.h"

namespace zypp
{ 

  //
  //    CLASS NAME : PoolItemBest
  //
  class PoolItemBest
  {
      typedef std::unordered_map<IdString,PoolItem> Container;
    public:
      typedef boost::function<bool ( const PoolItem & lhs, const PoolItem & rhs )> Predicate;

      typedef Container::size_type      size_type;
      typedef Container::value_type     value_type;
      typedef MapKVIteratorTraits<Container>::Value_const_iterator      iterator;
      typedef MapKVIteratorTraits<Container>::Key_const_iterator        ident_iterator;

    public:
      static constexpr bool preferNotLocked = true;

    public:
      PoolItemBest( bool preferNotLocked_r = false )
      { _ctor_init( preferNotLocked_r ); }

      PoolItemBest( sat::Solvable slv_r, bool preferNotLocked_r = false )
      { _ctor_init( preferNotLocked_r ); add( slv_r ); }

      PoolItemBest( const PoolItem & pi_r, bool preferNotLocked_r = false )
      { _ctor_init( preferNotLocked_r ); add( pi_r ); }

      template<class TIterator>
      PoolItemBest( TIterator begin_r, TIterator end_r, bool preferNotLocked_r = false )
      { _ctor_init( preferNotLocked_r ); add( begin_r, end_r ); }

    public:
      void add( sat::Solvable slv_r )
      { add( PoolItem( slv_r ) ); }

      void add( const PoolItem & pi_r );

      template<class TIterator>
      void add( TIterator begin_r, TIterator end_r )
      {
        for_( it, begin_r, end_r )
          add( *it );
      }

    public:
      bool empty() const        { return container().empty(); }
      size_type size() const    { return container().size(); }
      iterator begin() const    { return make_map_value_begin( container() ); }
      iterator end() const      { return make_map_value_end( container() ); }

      PoolItem find( IdString ident_r ) const;
      PoolItem find( sat::Solvable slv_r ) const        { return find( slv_r.ident() ); }
      PoolItem find( const PoolItem & pi_r ) const      { return find( pi_r.satSolvable().ident() ); }

      ident_iterator identBegin() const { return make_map_key_begin( container() ); }
      ident_iterator identEnd() const   { return make_map_key_end( container() ); }

    private:
      void _ctor_init( bool preferNotLocked_r );
      void _ctor_init(/*preferNotLocked = false*/);     
      const Container & container() const;
    private:
      struct Impl;
      RWCOW_pointer<Impl> & pimpl()             { return *(reinterpret_cast<RWCOW_pointer<Impl>*>( _dont_use_this_use_pimpl.get() )); }
      const RWCOW_pointer<Impl> & pimpl() const { return *(reinterpret_cast<RWCOW_pointer<Impl>*>( _dont_use_this_use_pimpl.get() )); }
      shared_ptr<void> _dont_use_this_use_pimpl;
  };

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

} // namespace zypp
#endif // ZYPP_POOLITEMBEST_H