hdr/request.hh

   1 /*
   2   request.hh -- declare Request baseclasses.
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #ifndef REQUEST_HH
  10 #define REQUEST_HH
  11 // LilyPond's second egg of columbus!
  12
  13 #include "glob.hh"
  14 #include "string.hh"
  15 #include "moment.hh"
  16 #include "class-name.hh"
  17
  18 /**
  19  a voice element wants something printed.
  20  Hungarian postfix: req
  21  @see lilygut manpage
  22  */
  23 class Request {
  24 public:
  25     Voice_element*elt_l_;
  26     char const* defined_ch_c_l_;
  27
  28     /* *************** */
  29     Voice  * voice_l();
  30     Request();
  31     Request(Request const&);
  32     virtual ~Request(){}
  33
  34     NAME_MEMBERS(Request);
  35     virtual Request* clone() const { return new Request(*this); }
  36     void print()const ;
  37
  38     virtual Moment duration() const { return 0; }
  39
  40     /*  accessors for children
  41         maybe checkout RTTI
  42      */
  43     virtual Barcheck_req *barcheck() { return 0; }
  44     virtual Note_req *note() { return 0;}
  45     virtual Script_req *script() { return 0;}
  46     virtual Stem_req *stem() { return 0;}
  47     virtual Text_req*text() { return 0; }
  48     virtual Rest_req *rest() { return 0; }
  49     virtual Span_req *span() { return 0; }
  50     virtual Beam_req *beam() { return 0 ; }
  51     virtual Plet_req* plet() { return 0; }
  52     virtual Slur_req *slur() { return 0 ; }
  53     virtual Rhythmic_req*rhythmic() { return 0; }
  54     virtual Lyric_req* lreq_l() { return 0; }
  55     virtual Melodic_req *melodic() { return 0; }
  56     virtual Terminate_voice_req *terminate() {return 0;}
  57     virtual Group_change_req * groupchange() { return 0;}
  58     virtual Group_feature_req * groupfeature() { return 0; }
  59     virtual Spacing_req * spacing() { return 0; }
  60     virtual Blank_req * blank() { return 0; }
  61     virtual Musical_req *musical() { return 0; }
  62     virtual Command_req * command() { return 0; }
  63 protected:
  64     virtual void do_print()const ;
  65 };
  66
  67 #define REQUESTMETHODS(T,accessor)      \
  68 virtual T * accessor() { return this;}\
  69 NAME_MEMBERS(T);\
  70 virtual Request *clone() const { return  new T(*this); } \
  71 virtual void do_print() const
  72
  73 #endif