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 "request.hh"
  38 #include "request-iterator.hh"
  39 #include "output-property.hh"
  40
  41 void
  42 Music_iterator::do_print() const
  43 {
  44 }
  45
  46 void
  47 Music_iterator::print() const
  48 {
  49 #ifndef NPRINT
  50   if (!flower_dstream)
  51     return ;
  52   DEBUG_OUT << classname(this) << "{";
  53   Translator_group *t =     report_to_l();
  54   DEBUG_OUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
  55   if (ok())
  56     DEBUG_OUT << "next at " << next_moment() << " ";
  57   else
  58     DEBUG_OUT << "not feeling well today..";
  59   do_print();
  60   DEBUG_OUT << "}\n";
  61 #endif
  62 }
  63
  64 Translator_group*
  65 Music_iterator::get_req_translator_l()
  66 {
  67   assert (report_to_l());
  68   if (report_to_l()->is_bottom_translator_b ())
  69     return report_to_l();
  70
  71   set_translator (report_to_l()->get_default_interpreter ());
  72   return report_to_l();
  73 }
  74
  75
  76 Translator_group*
  77 Music_iterator::report_to_l() const
  78 {
  79   return handle_.report_to_l ();
  80 }
  81
  82
  83 void
  84 Music_iterator::set_translator (Translator_group*trans)
  85 {
  86   handle_.set_translator (trans);
  87 }
  88
  89 void
  90 Music_iterator::construct_children()
  91 {
  92 }
  93
  94 Music_iterator::~Music_iterator()
  95 {
  96 }
  97
  98 Moment
  99 Music_iterator::next_moment() const
 100 {
 101   return 0;
 102 }
 103
 104
 105 void
 106 Music_iterator::process_and_next (Moment m)
 107 {
 108   do_process_and_next (m);
 109 }
 110
 111 void
 112 Music_iterator::do_process_and_next (Moment)
 113 {
 114   first_b_ = false;
 115 }
 116
 117 bool
 118 Music_iterator::ok() const
 119 {
 120   return first_b_;
 121 }
 122
 123 Music_iterator*
 124 Music_iterator::static_get_iterator_p (Music const *m)
 125 {
 126   Music_iterator * p =0;
 127
 128   /* It would be nice to do this decentrally, but the order of this is
 129      significant.  */
 130   if (dynamic_cast<Request_chord  const *> (m))
 131     p = new Request_chord_iterator;
 132   else if (dynamic_cast<Lyric_combine_music const*> (m))
 133     p = new Lyric_combine_music_iterator;
 134   else if (dynamic_cast<Simultaneous_music  const *> (m))
 135     p =  new Simultaneous_music_iterator;
 136   else if (dynamic_cast<Sequential_music  const *> (m))
 137     p =  new Sequential_music_iterator;
 138   else if (dynamic_cast<Translation_property  const *> (m))
 139     p = new Property_iterator;
 140   else if (dynamic_cast<Change_translator  const *> (m))
 141     p = new Change_iterator;
 142   else if (dynamic_cast<Time_scaled_music  const *> (m))
 143     p = new Time_scaled_music_iterator;
 144   else if (dynamic_cast<Grace_music const*> (m))
 145     p = new Grace_iterator;
 146   else if (dynamic_cast<Auto_change_music const*> (m))
 147     p = new Auto_change_iterator;
 148   else if (dynamic_cast<Music_wrapper  const *> (m))
 149     p = new Music_wrapper_iterator;
 150   else if (Repeated_music const * n = dynamic_cast<Repeated_music const *> (m))
 151     {
 152       if (n->fold_b_)
 153         p = new Folded_repeat_iterator;
 154       else
 155         p = new Unfolded_repeat_iterator;
 156     }
 157   else
 158     {
 159       p = new Simple_music_iterator ;
 160     }
 161
 162   p->music_l_ = m;
 163   return p;
 164 }
 165
 166 void
 167 Music_iterator::init_translator (Music const *m, Translator_group  *report_l)
 168 {
 169   music_l_ = m;
 170   if (Context_specced_music const * csm =dynamic_cast<Context_specced_music const*>(m))
 171     {
 172       Translator_group* a =report_l->
 173         find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
 174
 175       set_translator (a);
 176
 177     }
 178
 179   if (! report_to_l())
 180     set_translator (report_l);
 181 }
 182
 183
 184 Music_iterator*
 185 Music_iterator::get_iterator_p (Music const*m) const
 186 {
 187   Music_iterator*p = static_get_iterator_p (m);
 188   p->init_translator (m, report_to_l());
 189
 190   p->construct_children();
 191   return p;
 192 }
 193
 194 Music_iterator::Music_iterator()
 195 {
 196   first_b_ = true;
 197 }
 198
 199 Music_iterator*
 200 Music_iterator::try_music (Music const *m) const
 201 {
 202   bool b = report_to_l ()->try_music ((Music*)m); // ugh
 203   Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
 204   if (!it)
 205     it = try_music_in_children (m);
 206   return it;
 207 }
 208
 209 Music_iterator*
 210 Music_iterator::try_music_in_children (Music const *  ) const
 211 {
 212   return 0;
 213 }
 214