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--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 /*
  10   UGH. too many includes.
  11  */
  12 #include "debug.hh"
  13 #include "music-list.hh"
  14 #include "music-iterator.hh"
  15 #include "property-iterator.hh"
  16 #include "request-chord-iterator.hh"
  17 #include "sequential-music-iterator.hh"
  18 #include "simultaneous-music-iterator.hh"
  19 #include "translator-group.hh"
  20 #include "translation-property.hh"
  21 #include "change-iterator.hh"
  22 #include "change-translator.hh"
  23 #include "music-wrapper.hh"
  24 #include "music-wrapper-iterator.hh"
  25 #include "time-scaled-music-iterator.hh"
  26 #include "time-scaled-music.hh"
  27 #include "context-specced-music.hh"
  28 #include "repeated-music.hh"
  29 #include "folded-repeat-iterator.hh"
  30 #include "unfolded-repeat-iterator.hh"
  31 #include "grace-iterator.hh"
  32 #include "grace-music.hh"
  33 #include "lyric-combine-music.hh"
  34 #include "lyric-combine-music-iterator.hh"
  35 #include "auto-change-music.hh"
  36 #include "auto-change-iterator.hh"
  37 #include "part-combine-music.hh"
  38 #include "part-combine-music-iterator.hh"
  39 #include "request.hh"
  40 #include "simple-music-iterator.hh"
  41 #include "output-property.hh"
  42 #include "chord-tremolo-iterator.hh"
  43
  44 Music_iterator::Music_iterator ()
  45 {
  46   first_b_ = true;
  47 }
  48
  49 Music_iterator::Music_iterator (Music_iterator const& src)
  50 {
  51   first_b_ = src.first_b_;
  52   handle_ = src.handle_;
  53   music_l_ = src.music_l_;
  54 }
  55
  56 Music_iterator::~Music_iterator()
  57 {
  58 }
  59
  60 void
  61 Music_iterator::do_print() const
  62 {
  63 }
  64
  65 void
  66 Music_iterator::print() const
  67 {
  68 #ifndef NPRINT
  69   if (!flower_dstream)
  70     return ;
  71   DEBUG_OUT << classname(this) << "{";
  72   Translator_group *t =     report_to_l();
  73   DEBUG_OUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
  74   if (ok())
  75     DEBUG_OUT << "next at " << next_moment() << " ";
  76   else
  77     DEBUG_OUT << "not feeling well today..";
  78   do_print();
  79   DEBUG_OUT << "}\n";
  80 #endif
  81 }
  82
  83 Translator_group*
  84 Music_iterator::get_req_translator_l()
  85 {
  86   assert (report_to_l());
  87   if (report_to_l()->is_bottom_translator_b ())
  88     return report_to_l();
  89
  90   set_translator (report_to_l()->get_default_interpreter ());
  91   return report_to_l();
  92 }
  93
  94
  95 Translator_group*
  96 Music_iterator::report_to_l() const
  97 {
  98   return handle_.report_to_l ();
  99 }
 100
 101
 102 void
 103 Music_iterator::set_translator (Translator_group*trans)
 104 {
 105   handle_.set_translator (trans);
 106 }
 107
 108 void
 109 Music_iterator::construct_children()
 110 {
 111 }
 112
 113 Moment
 114 Music_iterator::next_moment() const
 115 {
 116   return 0;
 117 }
 118
 119
 120 void
 121 Music_iterator::process_and_next (Moment m)
 122 {
 123   do_process_and_next (m);
 124 }
 125
 126 void
 127 Music_iterator::do_process_and_next (Moment)
 128 {
 129   first_b_ = false;
 130 }
 131
 132 bool
 133 Music_iterator::ok () const
 134 {
 135   return first_b_;
 136 }
 137
 138 Music*
 139 Music_iterator::get_music ()
 140 {
 141   if (ok ())
 142     return music_l_;
 143   return 0;
 144 }
 145
 146 bool
 147 Music_iterator::next ()
 148 {
 149   first_b_ = false;
 150   return ok ();
 151 }
 152
 153 Music_iterator*
 154 Music_iterator::static_get_iterator_p (Music  *m)
 155 {
 156   Music_iterator * p =0;
 157
 158   /* It would be nice to do this decentrally, but the order of this is
 159      significant.  */
 160   if (dynamic_cast<Request_chord   *> (m))
 161     p = new Request_chord_iterator;
 162   else if (dynamic_cast<Lyric_combine_music *> (m))
 163     p = new Lyric_combine_music_iterator;
 164   else if (dynamic_cast<Simultaneous_music *> (m))
 165     p =  new Simultaneous_music_iterator;
 166   else if (dynamic_cast<Sequential_music *> (m))
 167     p =  new Sequential_music_iterator;
 168   else if (dynamic_cast<Translation_property *> (m))
 169     p = new Property_iterator;
 170   else if (dynamic_cast<Change_translator *> (m))
 171     p = new Change_iterator;
 172   else if (dynamic_cast<Push_translation_property*>(m))
 173     p = new Push_property_iterator;
 174   else if (dynamic_cast<Pop_translation_property*>(m))
 175     p = new Pop_property_iterator;
 176   else if (dynamic_cast<Time_scaled_music *> (m))
 177     p = new Time_scaled_music_iterator;
 178   else if (dynamic_cast<Grace_music *> (m))
 179     p = new Grace_iterator;
 180   else if (dynamic_cast<Auto_change_music *> (m))
 181     p = new Auto_change_iterator;
 182   else if (dynamic_cast<Part_combine_music *> (m))
 183     p = new Part_combine_music_iterator;
 184   else if (dynamic_cast<Music_wrapper   *> (m))
 185     p = new Music_wrapper_iterator;
 186   else if (Repeated_music  * n = dynamic_cast<Repeated_music  *> (m))
 187     {
 188       if (n->type_ == "tremolo")
 189         p = new Chord_tremolo_iterator;
 190       else if (n->fold_b_)
 191         p = new Folded_repeat_iterator;
 192       else
 193         p = new Unfolded_repeat_iterator;
 194     }
 195   else
 196     {
 197       p = new Simple_music_iterator ;
 198     }
 199
 200   p->music_l_ = m;
 201   return p;
 202 }
 203
 204 void
 205 Music_iterator::init_translator (Music  *m, Translator_group  *report_l)
 206 {
 207   music_l_ = m;
 208   if (Context_specced_music  * csm =dynamic_cast<Context_specced_music *>(m))
 209     {
 210       Translator_group* a =report_l->
 211         find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
 212
 213       set_translator (a);
 214
 215     }
 216
 217   if (! report_to_l())
 218     set_translator (report_l);
 219 }
 220
 221
 222 Music_iterator*
 223 Music_iterator::get_iterator_p (Music *m) const
 224 {
 225   Music_iterator*p = static_get_iterator_p (m);
 226   p->init_translator (m, report_to_l());
 227
 228   p->construct_children();
 229   return p;
 230 }
 231
 232 Music_iterator*
 233 Music_iterator::try_music (Music  *m) const
 234 {
 235   bool b = report_to_l ()->try_music ((Music*)m); // ugh
 236   Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
 237   if (!it)
 238     it = try_music_in_children (m);
 239   return it;
 240 }
 241
 242 Music_iterator*
 243 Music_iterator::try_music_in_children (Music  *  ) const
 244 {
 245   return 0;
 246 }
 247