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 #include "chord-tremolo-iterator.hh"
  41
  42 void
  43 Music_iterator::do_print() const
  44 {
  45 }
  46
  47 void
  48 Music_iterator::print() const
  49 {
  50 #ifndef NPRINT
  51   if (!flower_dstream)
  52     return ;
  53   DEBUG_OUT << classname(this) << "{";
  54   Translator_group *t =     report_to_l();
  55   DEBUG_OUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
  56   if (ok())
  57     DEBUG_OUT << "next at " << next_moment() << " ";
  58   else
  59     DEBUG_OUT << "not feeling well today..";
  60   do_print();
  61   DEBUG_OUT << "}\n";
  62 #endif
  63 }
  64
  65 Translator_group*
  66 Music_iterator::get_req_translator_l()
  67 {
  68   assert (report_to_l());
  69   if (report_to_l()->is_bottom_translator_b ())
  70     return report_to_l();
  71
  72   set_translator (report_to_l()->get_default_interpreter ());
  73   return report_to_l();
  74 }
  75
  76
  77 Translator_group*
  78 Music_iterator::report_to_l() const
  79 {
  80   return handle_.report_to_l ();
  81 }
  82
  83
  84 void
  85 Music_iterator::set_translator (Translator_group*trans)
  86 {
  87   handle_.set_translator (trans);
  88 }
  89
  90 void
  91 Music_iterator::construct_children()
  92 {
  93 }
  94
  95 Music_iterator::~Music_iterator()
  96 {
  97 }
  98
  99 Moment
 100 Music_iterator::next_moment() const
 101 {
 102   return 0;
 103 }
 104
 105
 106 void
 107 Music_iterator::process_and_next (Moment m)
 108 {
 109   do_process_and_next (m);
 110 }
 111
 112 void
 113 Music_iterator::do_process_and_next (Moment)
 114 {
 115   first_b_ = false;
 116 }
 117
 118 bool
 119 Music_iterator::ok() const
 120 {
 121   return first_b_;
 122 }
 123
 124 Music_iterator*
 125 Music_iterator::static_get_iterator_p (Music const *m)
 126 {
 127   Music_iterator * p =0;
 128
 129   /* It would be nice to do this decentrally, but the order of this is
 130      significant.  */
 131   if (dynamic_cast<Request_chord  const *> (m))
 132     p = new Request_chord_iterator;
 133   else if (dynamic_cast<Lyric_combine_music const*> (m))
 134     p = new Lyric_combine_music_iterator;
 135   else if (dynamic_cast<Simultaneous_music  const *> (m))
 136     p =  new Simultaneous_music_iterator;
 137   else if (dynamic_cast<Sequential_music  const *> (m))
 138     p =  new Sequential_music_iterator;
 139   else if (dynamic_cast<Translation_property  const *> (m))
 140     p = new Property_iterator;
 141   else if (dynamic_cast<Change_translator  const *> (m))
 142     p = new Change_iterator;
 143   else if (dynamic_cast<Time_scaled_music  const *> (m))
 144     p = new Time_scaled_music_iterator;
 145   else if (dynamic_cast<Grace_music const*> (m))
 146     p = new Grace_iterator;
 147   else if (dynamic_cast<Auto_change_music const*> (m))
 148     p = new Auto_change_iterator;
 149   else if (dynamic_cast<Music_wrapper  const *> (m))
 150     p = new Music_wrapper_iterator;
 151   else if (Repeated_music const * n = dynamic_cast<Repeated_music const *> (m))
 152     {
 153       if (n->type_ == "tremolo")
 154         p = new Chord_tremolo_iterator;
 155       else if (n->fold_b_)
 156         p = new Folded_repeat_iterator;
 157       else
 158         p = new Unfolded_repeat_iterator;
 159     }
 160   else
 161     {
 162       p = new Simple_music_iterator ;
 163     }
 164
 165   p->music_l_ = m;
 166   return p;
 167 }
 168
 169 void
 170 Music_iterator::init_translator (Music const *m, Translator_group  *report_l)
 171 {
 172   music_l_ = m;
 173   if (Context_specced_music const * csm =dynamic_cast<Context_specced_music const*>(m))
 174     {
 175       Translator_group* a =report_l->
 176         find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
 177
 178       set_translator (a);
 179
 180     }
 181
 182   if (! report_to_l())
 183     set_translator (report_l);
 184 }
 185
 186
 187 Music_iterator*
 188 Music_iterator::get_iterator_p (Music const*m) const
 189 {
 190   Music_iterator*p = static_get_iterator_p (m);
 191   p->init_translator (m, report_to_l());
 192
 193   p->construct_children();
 194   return p;
 195 }
 196
 197 Music_iterator::Music_iterator()
 198 {
 199   first_b_ = true;
 200 }
 201
 202 Music_iterator*
 203 Music_iterator::try_music (Music const *m) const
 204 {
 205   bool b = report_to_l ()->try_music ((Music*)m); // ugh
 206   Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
 207   if (!it)
 208     it = try_music_in_children (m);
 209   return it;
 210 }
 211
 212 Music_iterator*
 213 Music_iterator::try_music_in_children (Music const *  ) const
 214 {
 215   return 0;
 216 }
 217