-
- alts = gh_cdr (alts);
- }
- }
-
- return l;
-}
-
-class Volta_repeat_iterator : public Sequential_iterator
-{
-public:
- DECLARE_SCHEME_CALLBACK(constructor, ());
- Volta_repeat_iterator();
-
- void add_repeat_command (SCM);
-protected:
- virtual SCM get_music_list () const;
- virtual void next_element (bool);
- virtual void construct_children();
- virtual void process (Moment);
-
- bool first_time_;
- int alt_count_;
- int rep_count_;
- int done_count_;
-};
-
-
-Volta_repeat_iterator::Volta_repeat_iterator()
-{
- done_count_ = alt_count_ = rep_count_= 0;
- first_time_ = true;
-}
-
-SCM
-Volta_repeat_iterator::get_music_list()const
-{
- return gh_cons (get_music ()->get_mus_property ("element"),
- get_music ()->get_mus_property ("elements"));
-}
-
-void
-Volta_repeat_iterator::construct_children ()
-{
- Sequential_iterator::construct_children();
-
- SCM alts = get_music ()->get_mus_property ("elements");
-
- alt_count_ = scm_ilength (alts);
- rep_count_ = gh_scm2int (get_music ()->get_mus_property ("repeat-count"));
- done_count_ = 0;
-}
-
-
-/*
- TODO: add source information for debugging
- */
-void
-Volta_repeat_iterator::add_repeat_command (SCM what)
-{
- SCM reps = ly_symbol2scm ("repeatCommands");
- SCM current_reps = get_outlet ()->internal_get_property (reps);
-
- Context * where = get_outlet ()->where_defined (reps);
- if (where
- && current_reps == SCM_EOL || gh_pair_p (current_reps))
- {
- current_reps = gh_cons (what, current_reps);
- where->internal_set_property (reps, current_reps);
- }
-}
-
-
-void
-Volta_repeat_iterator::next_element (bool side_effect)
-{
- done_count_ ++;
-
- Sequential_iterator::next_element (side_effect);
-
- if (side_effect)
- {
- if (alt_count_)
- {
- String repstr = to_string (rep_count_ - alt_count_ + done_count_) + ".";
- if (done_count_ > 1)
- {
- add_repeat_command (scm_list_n (ly_symbol2scm ("volta"), SCM_BOOL_F, SCM_UNDEFINED));