lily/music-iterator.cc

   1 /*
   2   music-iterator.cc -- implement Music_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "debug.hh"
   9 #include "music-list.hh"
  10 #include "music-iterator.hh"
  11 #include "property-iterator.hh"
  12 #include "request-iterator.hh"
  13 #include "sequential-music-iterator.hh"
  14 #include "simultaneous-music-iterator.hh"
  15 #include "translator-group.hh"
  16 #include "translation-property.hh"
  17 #include "change-iterator.hh"
  18 #include "change-translator.hh"
  19 #include "music-wrapper.hh"
  20 #include "music-wrapper-iterator.hh"
  21 #include "time-scaled-music-iterator.hh"
  22 #include "time-scaled-music.hh"
  23 #include "repeated-music.hh"
  24 #include "repeated-music-iterator.hh"
  25
  26 void
  27 Music_iterator::do_print() const
  28 {
  29 }
  30
  31 void
  32 Music_iterator::print() const
  33 {
  34 #ifndef NPRINT
  35   if (!check_debug)
  36     return ;
  37   DOUT << classname(this) << "{";
  38   DOUT << "report to " <<
  39     report_to_l() << " (" << classname (report_to_l ()) << ")\n";
  40   if (ok())
  41     DOUT << "next at " << next_moment() << " ";
  42   else
  43     DOUT << "not feeling well today..";
  44   do_print();
  45   DOUT << "}\n";
  46 #endif
  47 }
  48
  49 Translator_group*
  50 Music_iterator::get_req_translator_l()
  51 {
  52   assert (report_to_l());
  53   if (report_to_l()->is_bottom_translator_b ())
  54     return report_to_l();
  55
  56   set_translator (report_to_l()->get_default_interpreter ());
  57   return report_to_l();
  58 }
  59
  60
  61 Translator_group*
  62 Music_iterator::report_to_l() const
  63 {
  64   return handle_.report_to_l ();
  65 }
  66
  67
  68 void
  69 Music_iterator::set_translator (Translator_group*trans)
  70 {
  71   handle_.set_translator (trans);
  72 }
  73
  74 void
  75 Music_iterator::construct_children()
  76 {
  77 }
  78
  79 Music_iterator::~Music_iterator()
  80 {
  81 }
  82
  83 Moment
  84 Music_iterator::next_moment() const
  85 {
  86   return 0;
  87 }
  88
  89
  90 void
  91 Music_iterator::process_and_next (Moment m)
  92 {
  93   do_process_and_next (m);
  94 }
  95
  96 void
  97 Music_iterator::do_process_and_next (Moment)
  98 {
  99   first_b_ = false;
 100 }
 101
 102 bool
 103 Music_iterator::ok() const
 104 {
 105   return first_b_;
 106 }
 107
 108 Music_iterator*
 109 Music_iterator::static_get_iterator_p (Music const *m, Translator_group *report_l)
 110 {
 111   Music_iterator * p =0;
 112   if (dynamic_cast<Request_chord  const *> (m))
 113     p = new Request_chord_iterator;
 114   else if (dynamic_cast<Simultaneous_music  const *> (m))
 115     p =  new Simultaneous_music_iterator;
 116   else if (dynamic_cast<Sequential_music  const *> (m))
 117     p =  new Sequential_music_iterator;
 118   else if (dynamic_cast<Translation_property  const *> (m))
 119     p = new Property_iterator;
 120   else if (dynamic_cast<Change_translator  const *> (m))
 121     p = new Change_iterator;
 122   else if (dynamic_cast<Time_scaled_music  const *> (m))
 123     p = new Time_scaled_music_iterator;
 124   else if (dynamic_cast<Music_wrapper  const *> (m))
 125     p = new Music_wrapper_iterator;
 126   else if (dynamic_cast<Repeated_music const *> (m))
 127     p = new Repeated_music_iterator;
 128   else
 129     assert (0);
 130
 131   p->music_l_ = m;
 132   if (m->translator_type_str_.length_i ())
 133     {
 134       Translator_group* a =report_l->
 135         find_create_translator_l (m->translator_type_str_, m->translator_id_str_);
 136       p->set_translator (a);
 137     }
 138
 139   if (! p->report_to_l())
 140     p ->set_translator (report_l);
 141
 142
 143   return p;
 144 }
 145
 146
 147 Music_iterator*
 148 Music_iterator::get_iterator_p (Music const*m) const
 149 {
 150   Music_iterator*p = static_get_iterator_p (m, report_to_l());
 151   p->construct_children();
 152   return p;
 153 }
 154
 155 Music_iterator::Music_iterator()
 156 {
 157   first_b_ = true;
 158 }
 159
 160