lily/grob-interface-scheme.cc

   1 /*
   2   grob-interface-scheme.cc -- implement grob interface bindings.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "lily-guile.hh"
  10 #include "std-string.hh"
  11
  12 static SCM all_ifaces;
  13
  14 void
  15 internal_add_interface (SCM a, SCM b, SCM c)
  16 {
  17   if (!all_ifaces)
  18     {
  19       SCM tab = scm_c_make_hash_table (59);
  20       all_ifaces = tab;
  21       scm_permanent_object (tab);
  22     }
  23
  24   SCM entry = scm_list_n (a, b, c, SCM_UNDEFINED);
  25
  26   scm_hashq_set_x (all_ifaces, a, entry);
  27 }
  28
  29 LY_DEFINE (ly_add_interface, "ly:add-interface",
  30            3, 0, 0, (SCM iface, SCM desc, SCM props),
  31            "Add a new grob interface.  @var{iface} is the"
  32            " interface name, @var{desc} is the interface"
  33            " description, and @var{props} is the list of"
  34            " user-settable properties for the interface.")
  35 {
  36   LY_ASSERT_TYPE (ly_is_symbol, iface, 1);
  37   LY_ASSERT_TYPE (scm_is_string, desc, 2);
  38   LY_ASSERT_TYPE (ly_is_list, props, 3);
  39
  40   internal_add_interface (iface, desc, props);
  41
  42   return SCM_UNSPECIFIED;
  43 }
  44
  45 LY_DEFINE (ly_all_grob_interfaces, "ly:all-grob-interfaces",
  46            0, 0, 0, (),
  47            "Return the hash table with all grob interface descriptions.")
  48 {
  49   return all_ifaces;
  50 }
  51