lily/object-key-undumper.cc

   1 /*
   2   object-key-undumper.cc -- implement Object_key_undumper
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2004--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "object-key-undumper.hh"
  10
  11 #include "ly-smobs.icc"
  12
  13 IMPLEMENT_SMOBS (Object_key_undumper);
  14 IMPLEMENT_DEFAULT_EQUAL_P (Object_key_undumper);
  15
  16 SCM
  17 Object_key_undumper::mark_smob (SCM smob)
  18 {
  19   Object_key_undumper *undumper = (Object_key_undumper *) SCM_CELL_WORD_1 (smob);
  20   for (Int_to_key_map::const_iterator i (undumper->keys_.begin ());
  21        i != undumper->keys_.end (); i++)
  22     scm_gc_mark ((*i).second->self_scm ());
  23
  24   return SCM_BOOL_F;
  25 }
  26
  27 int
  28 Object_key_undumper::print_smob (SCM s, SCM port, scm_print_state*)
  29 {
  30   (void) s;
  31   scm_puts ("#<Object_key_undumper>", port);
  32   return 1;
  33 }
  34
  35 Object_key_undumper::Object_key_undumper ()
  36 {
  37   smobify_self ();
  38 }
  39
  40 void
  41 Object_key_undumper::parse_contents (SCM contents)
  42 {
  43   for (SCM s = contents; scm_is_pair (s); s = scm_cdr (s))
  44     {
  45       SCM entry = scm_car (s);
  46       if (scm_car (entry) != ly_symbol2scm ("define-key"))
  47         continue;
  48
  49       int number = scm_to_int (scm_cadr (entry));
  50       SCM skey = scm_caddr (entry);
  51
  52       SCM new_key = SCM_EOL;
  53       SCM *tail = &new_key;
  54       for (SCM t = skey; scm_is_pair (t); t = scm_cdr (t))
  55         {
  56           SCM item = scm_car (t);
  57           if (scm_is_pair (item)
  58               && scm_car (item) == ly_symbol2scm ("key"))
  59             {
  60               int index = scm_to_int (scm_cadr (item));
  61               Object_key const *key = get_key (index);
  62               *tail = scm_cons (key->self_scm (), SCM_EOL);
  63             }
  64           else
  65             *tail = scm_cons (item, SCM_EOL);
  66           tail = SCM_CDRLOC (*tail);
  67         }
  68
  69       Object_key *k = Object_key::undump (new_key);
  70       keys_[number] = k;
  71       k->unprotect ();
  72     }
  73 }
  74
  75 Object_key const *
  76 Object_key_undumper::get_key (int idx)
  77 {
  78   Int_to_key_map::const_iterator i (keys_.find (idx));
  79   assert (i != keys_.end ());
  80
  81   return (*i).second;
  82 }
  83
  84 Object_key_undumper::~Object_key_undumper ()
  85 {
  86 }