Queue.h

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#ifndef ZYPP_SAT_QUEUE_H
#define ZYPP_SAT_QUEUE_H

#include <iosfwd>

#include "zypp/base/PtrTypes.h"
#include "zypp/sat/detail/PoolMember.h"

namespace zypp
{
  namespace sat
  {
    class Queue;
    typedef Queue SolvableQueue;        
    typedef Queue StringQueue;          

    class Queue
    {
      public:
        typedef unsigned size_type;
        typedef detail::IdType value_type;
        typedef const value_type* const_iterator;

      public:
        Queue();

        ~Queue();

        bool empty() const;
        size_type size() const;
        const_iterator begin() const;
        const_iterator end() const;

        const_iterator find( value_type val_r ) const;

        bool contains( value_type val_r ) const
        { return( find( val_r ) != end() ); }

        value_type first() const;

        value_type last() const;

        const value_type & at( size_type idx_r ) const;

        value_type & at( size_type idx_r );

        const value_type & operator[]( size_type idx_r ) const;

        value_type & operator[]( size_type idx_r );

        void clear();

        void remove( value_type val_r );

        void push( value_type val_r );
        void push_back( value_type val_r )
        { push( val_r ); }

        void pushUnique( value_type val_r );

        value_type pop();
        value_type pop_back()
        { return pop(); }

        void push_front( value_type val_r );

        value_type pop_front();

     public:
        operator detail::CQueue *();                    
        operator const detail::CQueue *() const         
        { return _pimpl.get(); }
      private:
        RWCOW_pointer<detail::CQueue> _pimpl;           
    };

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

    std::ostream & dumpOn( std::ostream & str, const Queue & obj );

    bool operator==( const Queue & lhs, const Queue & rhs );

    inline bool operator!=( const Queue & lhs, const Queue & rhs )
    { return !( lhs == rhs ); }

  } // namespace sat

  template<> sat::detail::CQueue * rwcowClone<sat::detail::CQueue>( const sat::detail::CQueue * rhs );

} // namespace zypp
#endif // ZYPP_SAT_QUEUE_H