ResStore.h

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#ifndef ZYPP_RESSTORE_H
#define ZYPP_RESSTORE_H

#include <iosfwd>
#include <set>

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

namespace zypp
{ 

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

  public:
    class Impl;

    typedef ResObject                ResT;

  private:
    typedef std::set<ResT::Ptr>      StorageT;

  public:

    typedef StorageT::size_type      size_type;
    typedef StorageT::iterator       iterator;
    typedef StorageT::const_iterator const_iterator;
    typedef boost::filter_iterator<resfilter::ResFilter, const_iterator>  resfilter_const_iterator;

  public:
    ResStore();
    ~ResStore();

  public:
    iterator begin()
    { return store().begin(); }
    iterator end()
    { return store().end(); }
    const_iterator begin() const
    { return store().begin(); }
    const_iterator end() const
    { return store().end(); }

    bool empty() const
    { return store().empty(); }
    size_type size() const
    { return store().size(); }

    // insert/erase
    iterator insert( const ResT::Ptr & ptr_r )
    { return store().insert( ptr_r ).first; }
    template <class _InputIterator>
      void insert( _InputIterator first_r, _InputIterator last_r )
      { store().insert( first_r, last_r ); }
    size_type erase( const ResT::Ptr & ptr_r )
    { return store().erase( ptr_r ); }
    void erase( iterator pos_r )
    { store().erase( pos_r ); }
    void erase( iterator first_r, iterator last_r )
    { store().erase( first_r, last_r ); }
    void erase( const Resolvable::Kind & kind_r )
    {
      for ( iterator it = begin(); it != end();  )
        {
          if ( (*it)->kind() == kind_r )
            {
              store().erase( it++ ); // postfix! Incrementing before erase
            }
          else
            ++it;
        }
    }
    template<class _Res>
      void erase()
      { erase( ResTraits<_Res>::kind ); }
    void clear()
    { store().clear(); }

    template <class _Function, class _Filter>
      int forEach( _Filter filter_r, _Function fnc_r ) const
      {
        int cnt = 0;
        for ( ResStore::const_iterator it = _store.begin(); it != _store.end(); ++it )
          {
            if ( filter_r( *it ) )
              {
                ++cnt;
                if ( ! fnc_r( *it ) )
                  return -cnt;
              }
          }
        return cnt;
      }

    template <class _Function>
      int forEach( _Function fnc_r ) const
      {
        int cnt = 0;
        for ( ResStore::const_iterator it = _store.begin(); it != _store.end(); ++it )
          {
            ++cnt;
            if ( ! fnc_r( *it ) )
              return -cnt;
          }
        return cnt;
      }

  private:
    StorageT _store;
    StorageT & store()
    { return _store; }
    const StorageT & store() const
    { return _store; }

  private:
    RW_pointer<Impl> _pimpl; // currently unsused
  };

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

} // namespace zypp
#endif // ZYPP_RESSTORE_H

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