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