hdr/swalker.hh

   1
   2 /*
   3   swalker.hh -- part of LilyPond
   4
   5   (c) 1996,97 Han-Wen Nienhuys
   6 */
   7
   8 #ifndef SWALKER_HH
   9 #define SWALKER_HH
  10
  11 #include "staff.hh"
  12
  13 struct Staff_walker : public PCursor<Staff_column*> {
  14     Staff * staff_;
  15     PScore * pscore_;
  16
  17     int break_status;
  18
  19     /****************/
  20
  21     int priority() const;               // Command
  22     Moment when() const;
  23     virtual ~Staff_walker();
  24     Staff_walker(Staff*, PScore*);
  25     void process() ;
  26     void process_command(Command *);
  27     void operator++(int);
  28     /// every time ++ is called
  29     virtual void reset()=0;
  30     virtual void process_requests()=0;
  31     virtual void do_TYPESET_command(Command*)=0;
  32     virtual void do_INTERPRET_command(Command*)=0 ;
  33 private:
  34     Staff_walker(Staff_walker const&);
  35 };
  36 /**
  37   manage run-time info when walking staffcolumns such as: key,
  38   meter, pending beams & slurs
  39   */
  40
  41 #endif // SWALKER_HH
  42