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