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-chord-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 "context-specced-music.hh"
  24 #include "repeated-music.hh"
  25 #include "folded-repeat-iterator.hh"
  26 #include "unfolded-repeat-iterator.hh"
  27 #include "grace-iterator.hh"
  28 #include "grace-music.hh"
  29 #include "lyric-combine-music.hh"
  30 #include "lyric-combine-music-iterator.hh"
  31
  32 void
  33 Music_iterator::do_print() const
  34 {
  35 }
  36
  37 void
  38 Music_iterator::print() const
  39 {
  40 #ifndef NPRINT
  41   if (!check_debug)
  42     return ;
  43   DOUT << classname(this) << "{";
  44   Translator_group *t =     report_to_l();
  45   DOUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
  46   if (ok())
  47     DOUT << "next at " << next_moment() << " ";
  48   else
  49     DOUT << "not feeling well today..";
  50   do_print();
  51   DOUT << "}\n";
  52 #endif
  53 }
  54
  55 Translator_group*
  56 Music_iterator::get_req_translator_l()
  57 {
  58   assert (report_to_l());
  59   if (report_to_l()->is_bottom_translator_b ())
  60     return report_to_l();
  61
  62   set_translator (report_to_l()->get_default_interpreter ());
  63   return report_to_l();
  64 }
  65
  66
  67 Translator_group*
  68 Music_iterator::report_to_l() const
  69 {
  70   return handle_.report_to_l ();
  71 }
  72
  73
  74 void
  75 Music_iterator::set_translator (Translator_group*trans)
  76 {
  77   handle_.set_translator (trans);
  78 }
  79
  80 void
  81 Music_iterator::construct_children()
  82 {
  83 }
  84
  85 Music_iterator::~Music_iterator()
  86 {
  87 }
  88
  89 Moment
  90 Music_iterator::next_moment() const
  91 {
  92   return 0;
  93 }
  94
  95
  96 void
  97 Music_iterator::process_and_next (Moment m)
  98 {
  99   do_process_and_next (m);
 100 }
 101
 102 void
 103 Music_iterator::do_process_and_next (Moment)
 104 {
 105   first_b_ = false;
 106 }
 107
 108 bool
 109 Music_iterator::ok() const
 110 {
 111   return first_b_;
 112 }
 113
 114 Music_iterator*
 115 Music_iterator::static_get_iterator_p (Music const *m)
 116 {
 117   Music_iterator * p =0;
 118
 119   if (dynamic_cast<Request_chord  const *> (m))
 120     p = new Request_chord_iterator;
 121   else if (dynamic_cast<Lyric_combine_music const*> (m))
 122     p = new Lyric_combine_music_iterator;
 123   else if (dynamic_cast<Simultaneous_music  const *> (m))
 124     p =  new Simultaneous_music_iterator;
 125   else if (dynamic_cast<Sequential_music  const *> (m))
 126     p =  new Sequential_music_iterator;
 127   else if (dynamic_cast<Translation_property  const *> (m))
 128     p = new Property_iterator;
 129   else if (dynamic_cast<Change_translator  const *> (m))
 130     p = new Change_iterator;
 131   else if (dynamic_cast<Time_scaled_music  const *> (m))
 132     p = new Time_scaled_music_iterator;
 133   else if (dynamic_cast<Grace_music const*> (m))
 134     p = new Grace_iterator;
 135   else if (dynamic_cast<Music_wrapper  const *> (m))
 136     p = new Music_wrapper_iterator;
 137   else if (Repeated_music const * n = dynamic_cast<Repeated_music const *> (m))
 138     {
 139       if (n->fold_b_)
 140         p = new Folded_repeat_iterator;
 141       else
 142         p = new Unfolded_repeat_iterator;
 143     }
 144   else
 145     assert (0);
 146
 147
 148   p->music_l_ = m;
 149   return p;
 150 }
 151
 152 void
 153 Music_iterator::init_translator (Music const *m, Translator_group  *report_l)
 154 {
 155   music_l_ = m;
 156   if (Context_specced_music const * csm =dynamic_cast<Context_specced_music const*>(m))
 157     {
 158       Translator_group* a =report_l->
 159         find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
 160
 161       set_translator (a);
 162
 163     }
 164
 165   if (! report_to_l())
 166     set_translator (report_l);
 167 }
 168
 169
 170 Music_iterator*
 171 Music_iterator::get_iterator_p (Music const*m) const
 172 {
 173   Music_iterator*p = static_get_iterator_p (m);
 174   p->init_translator (m, report_to_l());
 175
 176   p->construct_children();
 177   return p;
 178 }
 179
 180 Music_iterator::Music_iterator()
 181 {
 182   first_b_ = true;
 183 }
 184
 185 Music_iterator*
 186 Music_iterator::try_music (Music const *m) const
 187 {
 188   bool b = report_to_l ()->try_music ((Music*)m); // ugh
 189   Music_iterator * it = b ? (Music_iterator*) this : 0; // ugh
 190   if (!it)
 191     it = try_music_in_children (m);
 192   return it;
 193 }
 194
 195 Music_iterator*
 196 Music_iterator::try_music_in_children (Music const *  ) const
 197 {
 198   return 0;
 199 }
 200