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 void
  45 Music_iterator::do_print() const
  46 {
  47 }
  48
  49 void
  50 Music_iterator::print() const
  51 {
  52 #ifndef NPRINT
  53   if (!flower_dstream)
  54     return ;
  55   DEBUG_OUT << classname(this) << "{";
  56   Translator_group *t =     report_to_l();
  57   DEBUG_OUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
  58   if (ok())
  59     DEBUG_OUT << "next at " << next_moment() << " ";
  60   else
  61     DEBUG_OUT << "not feeling well today..";
  62   do_print();
  63   DEBUG_OUT << "}\n";
  64 #endif
  65 }
  66
  67 Translator_group*
  68 Music_iterator::get_req_translator_l()
  69 {
  70   assert (report_to_l());
  71   if (report_to_l()->is_bottom_translator_b ())
  72     return report_to_l();
  73
  74   set_translator (report_to_l()->get_default_interpreter ());
  75   return report_to_l();
  76 }
  77
  78
  79 Translator_group*
  80 Music_iterator::report_to_l() const
  81 {
  82   return handle_.report_to_l ();
  83 }
  84
  85
  86 void
  87 Music_iterator::set_translator (Translator_group*trans)
  88 {
  89   handle_.set_translator (trans);
  90 }
  91
  92 void
  93 Music_iterator::construct_children()
  94 {
  95 }
  96
  97 Music_iterator::~Music_iterator()
  98 {
  99 }
 100
 101 Moment
 102 Music_iterator::next_moment() const
 103 {
 104   return 0;
 105 }
 106
 107
 108 void
 109 Music_iterator::process_and_next (Moment m)
 110 {
 111   do_process_and_next (m);
 112 }
 113
 114 void
 115 Music_iterator::do_process_and_next (Moment)
 116 {
 117   first_b_ = false;
 118 }
 119
 120 bool
 121 Music_iterator::ok () const
 122 {
 123   return first_b_;
 124 }
 125
 126 Music*
 127 Music_iterator::get_music ()
 128 {
 129   if (ok ())
 130     return music_l_;
 131   return 0;
 132 }
 133
 134 bool
 135 Music_iterator::next ()
 136 {
 137   first_b_ = false;
 138   return ok ();
 139 }
 140
 141 Music_iterator*
 142 Music_iterator::static_get_iterator_p (Music  *m)
 143 {
 144   Music_iterator * p =0;
 145
 146   /* It would be nice to do this decentrally, but the order of this is
 147      significant.  */
 148   if (dynamic_cast<Request_chord   *> (m))
 149     p = new Request_chord_iterator;
 150   else if (dynamic_cast<Lyric_combine_music *> (m))
 151     p = new Lyric_combine_music_iterator;
 152   else if (dynamic_cast<Simultaneous_music *> (m))
 153     p =  new Simultaneous_music_iterator;
 154   else if (dynamic_cast<Sequential_music *> (m))
 155     p =  new Sequential_music_iterator;
 156   else if (dynamic_cast<Translation_property *> (m))
 157     p = new Property_iterator;
 158   else if (dynamic_cast<Change_translator *> (m))
 159     p = new Change_iterator;
 160   else if (dynamic_cast<Push_translation_property*>(m))
 161     p = new Push_property_iterator;
 162   else if (dynamic_cast<Pop_translation_property*>(m))
 163     p = new Pop_property_iterator;
 164   else if (dynamic_cast<Time_scaled_music *> (m))
 165     p = new Time_scaled_music_iterator;
 166   else if (dynamic_cast<Grace_music *> (m))
 167     p = new Grace_iterator;
 168   else if (dynamic_cast<Auto_change_music *> (m))
 169     p = new Auto_change_iterator;
 170   else if (dynamic_cast<Part_combine_music *> (m))
 171     p = new Part_combine_music_iterator;
 172   else if (dynamic_cast<Music_wrapper   *> (m))
 173     p = new Music_wrapper_iterator;
 174   else if (Repeated_music  * n = dynamic_cast<Repeated_music  *> (m))
 175     {
 176       if (n->type_ == "tremolo")
 177         p = new Chord_tremolo_iterator;
 178       else if (n->fold_b_)
 179         p = new Folded_repeat_iterator;
 180       else
 181         p = new Unfolded_repeat_iterator;
 182     }
 183   else
 184     {
 185       p = new Simple_music_iterator ;
 186     }
 187
 188   p->music_l_ = m;
 189   return p;
 190 }
 191
 192 void
 193 Music_iterator::init_translator (Music  *m, Translator_group  *report_l)
 194 {
 195   music_l_ = m;
 196   if (Context_specced_music  * csm =dynamic_cast<Context_specced_music *>(m))
 197     {
 198       Translator_group* a =report_l->
 199         find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
 200
 201       set_translator (a);
 202
 203     }
 204
 205   if (! report_to_l())
 206     set_translator (report_l);
 207 }
 208
 209
 210 Music_iterator*
 211 Music_iterator::get_iterator_p (Music *m) const
 212 {
 213   Music_iterator*p = static_get_iterator_p (m);
 214   p->init_translator (m, report_to_l());
 215
 216   p->construct_children();
 217   return p;
 218 }
 219
 220 Music_iterator::Music_iterator()
 221 {
 222   first_b_ = true;
 223 }
 224
 225 Music_iterator*
 226 Music_iterator::try_music (Music  *m) const
 227 {
 228   bool b = report_to_l ()->try_music ((Music*)m); // ugh
 229   Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
 230   if (!it)
 231     it = try_music_in_children (m);
 232   return it;
 233 }
 234
 235 Music_iterator*
 236 Music_iterator::try_music_in_children (Music  *  ) const
 237 {
 238   return 0;
 239 }
 240