lily/grob-interface-scheme.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "lily-guile.hh"
  21 #include "std-string.hh"
  22
  23 static SCM all_ifaces;
  24
  25 void
  26 internal_add_interface (SCM a, SCM b, SCM c)
  27 {
  28   if (!all_ifaces)
  29     {
  30       SCM tab = scm_c_make_hash_table (59);
  31       all_ifaces = tab;
  32       scm_permanent_object (tab);
  33     }
  34
  35   SCM entry = scm_list_n (a, b, c, SCM_UNDEFINED);
  36
  37   scm_hashq_set_x (all_ifaces, a, entry);
  38 }
  39
  40 LY_DEFINE (ly_add_interface, "ly:add-interface",
  41            3, 0, 0, (SCM iface, SCM desc, SCM props),
  42            "Add a new grob interface.  @var{iface} is the"
  43            " interface name, @var{desc} is the interface"
  44            " description, and @var{props} is the list of"
  45            " user-settable properties for the interface.")
  46 {
  47   LY_ASSERT_TYPE (ly_is_symbol, iface, 1);
  48   LY_ASSERT_TYPE (scm_is_string, desc, 2);
  49   LY_ASSERT_TYPE (ly_is_list, props, 3);
  50
  51   internal_add_interface (iface, desc, props);
  52
  53   return SCM_UNSPECIFIED;
  54 }
  55
  56 LY_DEFINE (ly_all_grob_interfaces, "ly:all-grob-interfaces",
  57            0, 0, 0, (),
  58            "Return the hash table with all grob interface descriptions.")
  59 {
  60   return all_ifaces;
  61 }
  62