lily/include/global-performers.hh

   1
   2 /*
   3   global-performers.hh -- declare global performer stuff
   4
   5   source file of the GNU LilyPond music typesetter
   6
   7   (c) 1996, 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   8                  Jan Nieuwenhuizen <jan@digicash.com>
   9 */
  10
  11 #ifndef GLOBAL_PERFORMER_HH
  12 #define GLOBAL_PERFORMER_HH
  13
  14 /**
  15   A macro to automate administration of performers
  16  */
  17 #define ADD_THIS_PERFORMER( c) \
  18 struct c ## init { \
  19     static Performer* globalctor() \
  20     { \
  21         return new c;\
  22     } \
  23     c ## init() \
  24     { \
  25         add_Performer (c::static_name(), globalctor); \
  26     } \
  27 } _ ## c ## init;
  28
  29 // typedef Performer*(*Perf_ctor)(void); c++ ?
  30 typedef Performer*(*Perf_ctor)();
  31 void add_Performer (String s, Perf_ctor f);
  32
  33 #endif // GLOBAL_PERFORMER_HH