lily/translator-dispatch-list.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 "translator-dispatch-list.hh"
  21 #include "engraver.hh"
  22
  23 #include "ly-smobs.icc"
  24
  25 void
  26 Engraver_dispatch_list::apply (Grob_info gi)
  27 {
  28   Translator *origin = gi.origin_translator ();
  29   for (vsize i = 0; i < dispatch_entries_.size (); i++)
  30     {
  31       Engraver_dispatch_entry const &e (dispatch_entries_[i]);
  32       if (e.engraver_ == origin)
  33         continue;
  34
  35       (*e.function_) (e.engraver_, gi);
  36     }
  37 }
  38
  39 SCM
  40 Engraver_dispatch_list::create (SCM trans_list,
  41                                 SCM iface_list, Direction start_end)
  42 {
  43   SCM retval = Engraver_dispatch_list ().smobbed_copy ();
  44   Engraver_dispatch_list *list = Engraver_dispatch_list::unsmob (retval);
  45
  46   Engraver_dispatch_entry entry;
  47   bool found = false;
  48   for (SCM s = trans_list; scm_is_pair (s); s = scm_cdr (s))
  49     {
  50       Engraver *eng
  51         = dynamic_cast<Engraver *> (unsmob_translator (scm_car (s)));
  52
  53       if (!eng)
  54         continue;
  55
  56       entry.engraver_ = eng;
  57       for (SCM i = iface_list; scm_is_pair (i); i = scm_cdr (i))
  58         {
  59           Engraver_void_function_engraver_grob_info ptr
  60             = (start_end == START)
  61             ? eng->get_acknowledger (scm_car (i))
  62             : eng->get_end_acknowledger (scm_car (i));
  63
  64           if (ptr)
  65             {
  66               entry.function_ = ptr;
  67               list->dispatch_entries_.push_back (entry);
  68               found = true;
  69             }
  70         }
  71     }
  72
  73   return found ? retval : SCM_EOL;
  74 }
  75
  76 SCM
  77 Engraver_dispatch_list::mark_smob (SCM)
  78 {
  79   return SCM_BOOL_F;
  80 }
  81
  82 int
  83 Engraver_dispatch_list::print_smob (SCM /* x */,
  84                                     SCM p,
  85                                     scm_print_state *)
  86 {
  87   scm_puts ("#<Engraver_dispatch_list>", p);
  88   return 1;
  89 }
  90
  91 IMPLEMENT_SIMPLE_SMOBS (Engraver_dispatch_list);
  92 IMPLEMENT_DEFAULT_EQUAL_P (Engraver_dispatch_list);