typedef std::vector<std::pair<SectionReader*, bool> > SectionReaders;

     typedef std::vector<std::pair<SectionReader*, bool> > SectionReaders;

     SectionReaders readers;

     SectionReaders readers;

   };

   };

   /// \brief SectionReader for reading a graph's nodeset.

   /// \brief SectionReader for reading a graph's nodeset.

   ///

   ///

   /// The lemon format can store multiple graph nodesets with several maps.

   /// The lemon format can store multiple graph nodesets with several maps.

   /// The nodeset section's header line is \c \@nodeset \c nodeset_name, but the

   /// The nodeset section's header line is \c \@nodeset \c nodeset_name, but the

   /// \c nodeset_name may be empty.

   /// \c nodeset_name may be empty.

     _reader_bits::SkipReader<Node, DefaultSkipper> skipper;

     _reader_bits::SkipReader<Node, DefaultSkipper> skipper;

     std::auto_ptr<_reader_bits::MapInverterBase<Node> > inverter;

     std::auto_ptr<_reader_bits::MapInverterBase<Node> > inverter;

   };

   };

   /// \brief SectionReader for reading a graph's edgeset.

   /// \brief SectionReader for reading a graph's edgeset.

   ///

   ///

   /// The lemon format can store multiple graph edgesets with several maps.

   /// The lemon format can store multiple graph edgesets with several maps.

   /// The edgeset section's header line is \c \@edgeset \c edgeset_name, but the

   /// The edgeset section's header line is \c \@edgeset \c edgeset_name, but the

   /// \c edgeset_name may be empty.

   /// \c edgeset_name may be empty.

     std::auto_ptr<_reader_bits::MapInverterBase<Edge> > inverter;

     std::auto_ptr<_reader_bits::MapInverterBase<Edge> > inverter;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

   };

   };

   /// \brief SectionReader for reading a undirected graph's edgeset.

   /// \brief SectionReader for reading a undirected graph's edgeset.

   ///

   ///

   /// The lemon format can store multiple undirected edgesets with several 

   /// The lemon format can store multiple undirected edgesets with several 

   /// maps. The undirected edgeset section's header line is \c \@uedgeset 

   /// maps. The undirected edgeset section's header line is \c \@uedgeset 

   /// \c uedgeset_name, but the \c uedgeset_name may be empty.

   /// \c uedgeset_name, but the \c uedgeset_name may be empty.

     std::auto_ptr<_reader_bits::MapInverterBase<UEdge> > inverter;

     std::auto_ptr<_reader_bits::MapInverterBase<UEdge> > inverter;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

   };

   };

   /// \brief SectionReader for reading labeled nodes.

   /// \brief SectionReader for reading labeled nodes.

   ///

   ///

   /// The nodes section's header line is \c \@nodes \c nodes_name, but the

   /// The nodes section's header line is \c \@nodes \c nodes_name, but the

   /// \c nodes_name may be empty.

   /// \c nodes_name may be empty.

   ///

   ///

     typedef std::map<std::string, _reader_bits::ItemStore<Node> > NodeReaders;

     typedef std::map<std::string, _reader_bits::ItemStore<Node> > NodeReaders;

     NodeReaders readers;

     NodeReaders readers;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

     std::auto_ptr<_reader_bits::LabelReaderBase<Node> > nodeLabelReader;

   };

   };

   /// \brief SectionReader for reading labeled edges.

   /// \brief SectionReader for reading labeled edges.

   ///

   ///

   /// The edges section's header line is \c \@edges \c edges_name, but the

   /// The edges section's header line is \c \@edges \c edges_name, but the

   /// \c edges_name may be empty.

   /// \c edges_name may be empty.

   ///

   ///

     typedef std::map<std::string, _reader_bits::ItemStore<Edge> > EdgeReaders;

     typedef std::map<std::string, _reader_bits::ItemStore<Edge> > EdgeReaders;

     EdgeReaders readers;

     EdgeReaders readers;

     std::auto_ptr<_reader_bits::LabelReaderBase<Edge> > edgeLabelReader;

     std::auto_ptr<_reader_bits::LabelReaderBase<Edge> > edgeLabelReader;

   };

   };

   /// \brief SectionReader for reading labeled undirected edges.

   /// \brief SectionReader for reading labeled undirected edges.

   ///

   ///

   /// The undirected edges section's header line is \c \@uedges 

   /// The undirected edges section's header line is \c \@uedges 

   /// \c uedges_name, but the \c uedges_name may be empty.

   /// \c uedges_name, but the \c uedges_name may be empty.

   ///

   ///

     typedef std::map<std::string, _reader_bits::ItemStore<Edge> > EdgeReaders;

     typedef std::map<std::string, _reader_bits::ItemStore<Edge> > EdgeReaders;

     EdgeReaders edgeReaders;

     EdgeReaders edgeReaders;

     std::auto_ptr<_reader_bits::LabelReaderBase<Edge> > edgeLabelReader;

     std::auto_ptr<_reader_bits::LabelReaderBase<Edge> > edgeLabelReader;

   };

   };

   /// \brief SectionReader for attributes.

   /// \brief SectionReader for attributes.

   ///

   ///

   /// The lemon format can store multiple attribute set. Each set has

   /// The lemon format can store multiple attribute set. Each set has

   /// the header line \c \@attributes \c attributeset_name, but the 

   /// the header line \c \@attributes \c attributeset_name, but the 

   /// attributeset_name may be empty.

   /// attributeset_name may be empty.

     typedef std::map<std::string, _reader_bits::ValueReaderBase*> Readers;

     typedef std::map<std::string, _reader_bits::ValueReaderBase*> Readers;

     Readers readers;  

     Readers readers;  

   };

   };

   /// \brief SectionReader for retrieve what is in the file.

   /// \brief SectionReader for retrieve what is in the file.

   ///

   ///

   /// SectionReader for retrieve what is in the file. If you want

   /// SectionReader for retrieve what is in the file. If you want

   /// to know which sections, maps and items are in the file

   /// to know which sections, maps and items are in the file

   /// use the next code:

   /// use the next code: