LookupAttrTools.h

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#ifndef ZYPP_SAT_LOOKUPATTRTOOLS_H
#define ZYPP_SAT_LOOKUPATTRTOOLS_H

#include "zypp/sat/LookupAttr.h"
#include "zypp/Repository.h"

namespace zypp
{ 
  namespace sat
  { 

    //
    //  CLASS NAME : LookupAttr::TransformIterator
    //
    template<class TResult, class TAttr>
    class LookupAttr::TransformIterator : public boost::iterator_adaptor<
          TransformIterator<TResult,TAttr> // Derived
          , LookupAttr::iterator         // Base
          , TResult                      // Value
          , boost::forward_traversal_tag // CategoryOrTraversal
          , TResult                      // Reference
    >
    {
      public:
        TransformIterator()
        {}

        explicit
        TransformIterator( const LookupAttr::iterator & val_r )
        { this->base_reference() = val_r; }

      public:

        void nextSkipSolvAttr()
        { this->base_reference().nextSkipSolvAttr(); }

        void nextSkipSolvable()
        { this->base_reference().nextSkipSolvable(); }

        void nextSkipRepo()
        { this->base_reference().nextSkipRepo(); }

        void skipSolvAttr()
        { this->base_reference().skipSolvAttr(); }

        void skipSolvable()
        { this->base_reference().skipSolvable(); }

        void skipRepo()
        { this->base_reference().skipRepo(); }

        Repository inRepo() const
        { return this->base_reference().inRepo(); }

        Solvable inSolvable() const
        { return this->base_reference().inSolvable(); }

        SolvAttr inSolvAttr() const
        { return this->base_reference().inSolvAttr(); }

      private:
        friend class boost::iterator_core_access;

        TResult dereference() const
        {
          const LookupAttr::iterator lit( this->base_reference() );
          return TResult( lit.asType<TAttr>() );
        }
    };

    template<class TResult, class TAttr>
    class ArrayAttr;

    template<class TResult, class TAttr>
    std::ostream & operator<<( std::ostream & str, const ArrayAttr<TResult,TAttr> & obj );

    //
    //  CLASS NAME : ArrayAttr
    //
    template<class TResult, class TAttr>
    class ArrayAttr
    {
      friend std::ostream & operator<< <TResult,TAttr>( std::ostream & str, const ArrayAttr<TResult,TAttr> & obj );

      public:
        ArrayAttr()
        {}

        ArrayAttr( SolvAttr attr_r, LookupAttr::Location loc_r = LookupAttr::SOLV_ATTR )
        : _q( attr_r, loc_r )
        {}

        ArrayAttr( SolvAttr attr_r, Repository repo_r, LookupAttr::Location loc_r = LookupAttr::SOLV_ATTR )
        : _q( attr_r, repo_r, loc_r )
        {}

        ArrayAttr( SolvAttr attr_r, Solvable solv_r )
        : _q( attr_r, solv_r )
        {}

      public:
        typedef LookupAttr::TransformIterator<TResult,TAttr> iterator;
        typedef LookupAttr::size_type size_type;

        iterator begin() const
        { return iterator( _q.begin() ); }

        iterator end() const
        { return iterator( _q.end() ); }

        bool empty() const
        { return _q.empty(); }

        size_type size() const
        {
          size_type count = 0;
          for_( it, begin(), end() )
            ++count;
          return count;
        }

      public:

        iterator find( const TResult & key_r ) const
        {
          for_( it, begin(), end() )
          {
            if ( *it == key_r )
              return it;
          }
          return end();
        }

      private:
        LookupAttr _q;
    };

    template<class TResult, class TAttr>
    inline std::ostream & operator<<( std::ostream & str, const ArrayAttr<TResult,TAttr> & obj )
    { return dumpOn( str, obj._q ); }

  } // namespace sat
} // namespace zypp
#endif // ZYPP_SAT_LOOKUPATTRTOOLS_H