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--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include "debug.hh"
   9 #include "music-list.hh"
  10 #include "music-iterator.hh"
  11 #include "voice-iterator.hh"
  12 #include "property-iterator.hh"
  13 #include "chord-iterator.hh"
  14 #include "request-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 "compressed-music-iterator.hh"
  22 #include "compressed-music.hh"
  23 #include "repeated-music.hh"
  24 #include "repeated-music-iterator.hh"
  25
  26 void
  27 Music_iterator::do_print() const
  28 {
  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 void
  62 Music_iterator::push_translator (Translator_group*t)
  63 {
  64   report_to_l_arr_.push (t);
  65   t->iterator_count_ ++;
  66 }
  67
  68 void
  69 Music_iterator::pop_translator()
  70 {
  71   report_to_l()->iterator_count_ --;
  72   assert (report_to_l()->iterator_count_ >=0);
  73   report_to_l_arr_.pop();
  74 }
  75
  76 Translator_group*
  77 Music_iterator::report_to_l() const
  78 {
  79   if (! report_to_l_arr_.size())
  80     return 0;
  81   return report_to_l_arr_.top();
  82 }
  83
  84
  85 void
  86 Music_iterator::set_translator (Translator_group*trans)
  87 {
  88   if (report_to_l()==trans)
  89     return;
  90   if (report_to_l())
  91     pop_translator();
  92   if (trans)
  93     push_translator (trans);
  94 }
  95
  96 void
  97 Music_iterator::construct_children()
  98 {
  99
 100 }
 101
 102 Music_iterator::~Music_iterator()
 103 {
 104   set_translator (0);
 105 }
 106
 107 Moment
 108 Music_iterator::next_moment() const
 109 {
 110   return 0;
 111 }
 112
 113
 114 void
 115 Music_iterator::process_and_next (Moment m)
 116 {
 117   do_process_and_next (m);
 118 }
 119
 120 void
 121 Music_iterator::do_process_and_next (Moment)
 122 {
 123   first_b_ = false;
 124 }
 125
 126 bool
 127 Music_iterator::ok() const
 128 {
 129   return first_b_;
 130 }
 131
 132 Music_iterator*
 133 Music_iterator::static_get_iterator_p (Music const *m, Translator_group *report_l)
 134 {
 135   Music_iterator * p =0;
 136   if (dynamic_cast<Request_chord  const *> (m))
 137     p = new Request_chord_iterator;
 138   else if (dynamic_cast<Simultaneous_music  const *> (m))
 139     p =  new Simultaneous_music_iterator;
 140   else if (dynamic_cast<Sequential_music  const *> (m))
 141     p =  new Sequential_music_iterator;
 142   else if (dynamic_cast<Translation_property  const *> (m))
 143     p = new Property_iterator;
 144   else if (dynamic_cast<Change_translator  const *> (m))
 145     p = new Change_iterator;
 146   else if (dynamic_cast<Compressed_music  const *> (m))
 147     p = new Compressed_music_iterator;
 148   else if (dynamic_cast<Music_wrapper  const *> (m))
 149     p = new Music_wrapper_iterator;
 150   else if (dynamic_cast<Repeated_music const *> (m))
 151     p = new Repeated_music_iterator;
 152   else
 153     assert (0);
 154
 155   p->music_l_ = m;
 156   if (m->translator_type_str_.length_i ())
 157     {
 158       Translator_group* a =report_l->
 159         find_create_translator_l (m->translator_type_str_, m->translator_id_str_);
 160       p->set_translator (a);
 161     }
 162
 163   if (! p->report_to_l())
 164     p ->set_translator (report_l);
 165
 166
 167   return p;
 168 }
 169
 170 void
 171 Music_iterator::inherit_info(Music_iterator const *)
 172 {
 173 }
 174
 175 Music_iterator*
 176 Music_iterator::get_iterator_p (Music const*m) const
 177 {
 178   Music_iterator*p = static_get_iterator_p (m, report_to_l());
 179   p->inherit_info (this);
 180   p->construct_children();
 181   return p;
 182 }
 183
 184 Music_iterator::Music_iterator()
 185 {
 186   first_b_ = true;
 187 }
 188
 189