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--2005 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     {
  23       scm_gc_mark ((*i).second->self_scm ());
  24     }
  25
  26   return SCM_BOOL_F;
  27 }
  28
  29 int
  30 Object_key_undumper::print_smob (SCM s, SCM port, scm_print_state*)
  31 {
  32   (void) s;
  33   scm_puts ("#<Object_key_undumper>", port);
  34   return 1;
  35 }
  36
  37 Object_key_undumper::Object_key_undumper ()
  38 {
  39   smobify_self ();
  40 }
  41
  42 void
  43 Object_key_undumper::parse_contents (SCM contents)
  44 {
  45   for (SCM s = contents; scm_is_pair (s); s = scm_cdr (s))
  46     {
  47       SCM entry = scm_car (s);
  48       if (scm_car (entry) != ly_symbol2scm ("define-key"))
  49         continue;
  50
  51       int number = scm_to_int (scm_cadr (entry));
  52       SCM skey = scm_caddr (entry);
  53
  54       SCM new_key = SCM_EOL;
  55       SCM *tail = &new_key;
  56       for (SCM t = skey; scm_is_pair (t); t = scm_cdr (t))
  57         {
  58           SCM item = scm_car (t);
  59           if (scm_is_pair (item)
  60               && scm_car (item) == ly_symbol2scm ("key"))
  61             {
  62               int index = scm_to_int (scm_cadr (item));
  63               Object_key const *key = get_key (index);
  64               *tail = scm_cons (key->self_scm (), SCM_EOL);
  65             }
  66           else
  67             *tail = scm_cons (item, SCM_EOL);
  68           tail = SCM_CDRLOC (*tail);
  69         }
  70
  71       Object_key *k = Object_key::undump (new_key);
  72       keys_[number] = k;
  73       k->unprotect ();
  74     }
  75 }
  76
  77 Object_key const *
  78 Object_key_undumper::get_key (int idx)
  79 {
  80   Int_to_key_map::const_iterator i (keys_.find (idx));
  81   assert (i != keys_.end ());
  82
  83   return (*i).second;
  84 }
  85
  86 Object_key_undumper::~Object_key_undumper ()
  87 {
  88 }