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