-/*
- unfolded-repeat-iterator.cc -- implement Unfolded_repeat_iterator
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-
-
-#include "repeated-music.hh"
-#include "music-list.hh"
-#include "unfolded-repeat-iterator.hh"
-#include "debug.hh"
-#include "translator-group.hh"
-
-Unfolded_repeat_iterator::~Unfolded_repeat_iterator ()
-{
- delete current_iter_p_;
-}
-
-Unfolded_repeat_iterator::Unfolded_repeat_iterator ()
-{
- done_count_ =0;
- current_iter_p_ =0;
- do_main_b_ = false;
- alternative_count_i_ =0;
-}
-
-/**
-
-If we are in the body of the repeat always go to the current alternative.
-
-If we are not in the body, then we are in an alternative. If we are
-fully unfolding, advance the current alternative and go back to main.
-If we are semi-unfolding, advance the current alternative, and go to
-the alternative just set.
-
- */
-void
-Unfolded_repeat_iterator::next_element (bool side_effect)
-{
- Repeated_music * repmus =dynamic_cast<Repeated_music *> (music_l_);
- delete current_iter_p_;
- current_iter_p_ =0;
-
- bool do_repcommands = side_effect && repmus->volta_fold_b_;
-
- if (do_main_b_)
- {
- /*
- we were busy doing the main body, so
-
- - go to alternative if we're a volta
-
- - make a :| if there are no alternatives
-
- - do something intelligent when we're fully unfolding (fixcomment)
- */
-
- here_mom_ += repmus->body ()->length_mom ();
-
- if (!repmus->volta_fold_b_)
- done_count_ ++;
-
- if (gh_pair_p (alternative_cons_))
- {
- current_iter_p_ = get_iterator_p (unsmob_music (gh_car (alternative_cons_)));
- do_main_b_ = false;
-
- if (repmus->volta_fold_b_)
- {
- String repstr = to_str (done_count_ + 1);
- if (do_repcommands)
- add_repeat_command (gh_list (ly_symbol2scm ("volta"),
- ly_str02scm (repstr.ch_C()), SCM_UNDEFINED));
- }
- }
- else if (repmus->volta_fold_b_)
- {
- add_repeat_command (ly_symbol2scm ("end-repeat"));
- }
- else if (done_count_ < repmus->repeats_i_)
- {
- current_iter_p_ = get_iterator_p (repmus->body ());
- do_main_b_ = true;
- }
- }
- else
- {
- /*
- we're not in the main part. So we're either in an alternative, or
- we just finished.
- */
-
- /*
- we're in the alternatives. We move the pointer to the
- next alternative.
- */
- if (alternative_cons_)
- {
- here_mom_ += unsmob_music (gh_car (alternative_cons_))->length_mom ();
-
- if (repmus->volta_fold_b_ ||
- repmus->repeats_i_ - done_count_ < alternative_count_i_)
- alternative_cons_ = gh_cdr (alternative_cons_);
-
- if (do_repcommands)
- add_repeat_command (gh_list (ly_symbol2scm ("volta"), SCM_BOOL_F, SCM_UNDEFINED));
-
-
-
- /*
- we've done the main body as well, but didn't go over the other
- increment. */
- if (repmus->volta_fold_b_)
- done_count_ ++;
- }
-
- /*
- We still have alternatives left, so
-
- if we're volta: traverse them
-
- if we're full unfold: go back to main body.
- */
-
- if (done_count_ < repmus->repeats_i_ && gh_pair_p (alternative_cons_))
- {
- if (do_repcommands)
- {
- String repstr = to_str (done_count_ + 1);
- add_repeat_command (gh_list (ly_symbol2scm ("volta"),
- ly_str02scm (repstr.ch_C()), SCM_UNDEFINED));
- add_repeat_command (ly_symbol2scm ("end-repeat"));
- }
+/*
+ unfolded-repeat-iterator.cc -- implement Unfolded_repeat_iterator
-
- if (repmus->volta_fold_b_)
- current_iter_p_ = get_iterator_p (unsmob_music (gh_car (alternative_cons_)));
- else
- {
- current_iter_p_ = get_iterator_p (repmus->body ());
- do_main_b_ = true;
- }
- }
- }
-}
+ source file of the GNU LilyPond music typesetter
+ (c) 2002--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
-bool
-Unfolded_repeat_iterator::ok () const
-{
- return current_iter_p_ ;
-}
+#include "music.hh"
+#include "sequential-iterator.hh"
+#include "context.hh"
-Moment
-Unfolded_repeat_iterator::pending_moment () const
+class Unfolded_repeat_iterator : public Sequential_iterator
{
- return here_mom_ + current_iter_p_->pending_moment ();
-}
+public:
+ DECLARE_SCHEME_CALLBACK (constructor, ());
+protected:
+ virtual SCM get_music_list () const;
+};
-void
-Unfolded_repeat_iterator::construct_children ()
+SCM
+Unfolded_repeat_iterator::get_music_list () const
{
- Repeated_music * mus =dynamic_cast<Repeated_music *> (music_l_);
-
- alternative_cons_ = (mus->alternatives ())
- ? mus->alternatives ()->music_list ()
- : SCM_EOL;
+ SCM l = SCM_EOL;
+ SCM *tail = &l;
- for (SCM p = alternative_cons_; gh_pair_p (p); p = gh_cdr (p))
- alternative_count_i_ ++;
+ SCM body = get_music ()->get_property ("element");
+ SCM alts = get_music ()->get_property ("elements");
+ int alt_count = scm_ilength (alts);
+ int rep_count = scm_to_int (get_music ()->get_property ("repeat-count"));
- if (mus->body ())
- {
- current_iter_p_ = get_iterator_p (mus->body ());
- do_main_b_ = true;
- }
- else if (gh_pair_p (alternative_cons_))
+ for (int i = 0; i < rep_count; i++)
{
- current_iter_p_ = get_iterator_p (unsmob_music (gh_car (alternative_cons_)));
- do_main_b_ = false;
- }
-}
+ if (unsmob_music (body))
+ *tail = scm_cons (body, SCM_EOL);
-/*
- TODO: add source information for debugging
- */
-void
-Unfolded_repeat_iterator::add_repeat_command (SCM what)
-{
- SCM reps = ly_symbol2scm ("repeatCommands");
- SCM current_reps = report_to_l ()->get_property(reps);
-
- Translator_group * where = report_to_l ()->where_defined (reps);
- if (where
- && current_reps == SCM_EOL || gh_pair_p (current_reps))
- {
- current_reps = gh_cons (what, current_reps);
- where->set_property (reps, current_reps);
- }
-}
+ tail = SCM_CDRLOC (*tail);
-void
-Unfolded_repeat_iterator::process (Moment m)
-{
- if (!m)
- {
- if (dynamic_cast<Repeated_music*> (music_l_)->volta_fold_b_)
- add_repeat_command (ly_symbol2scm ("start-repeat"));
- }
- while (1)
- {
- while (!current_iter_p_->ok ())
+ if (alt_count)
{
- next_element(true);
+ *tail = scm_cons (scm_car (alts), SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ if (i >= rep_count - alt_count)
- if (!current_iter_p_)
- return;
+ alts = scm_cdr (alts);
}
-
- if (m - here_mom_ >= current_iter_p_->pending_moment ())
- current_iter_p_->process (m - here_mom_);
- else
- return;
}
-}
-
-void
-Unfolded_repeat_iterator::skip (Moment until)
-{
- while (current_iter_p_)
- {
- Moment l =current_iter_p_->music_length_mom ();
- if (l >= until - here_mom_)
- current_iter_p_->skip (until - here_mom_);
-
- if (current_iter_p_->ok ())
- return ;
- next_element (false);
- }
+ return l;
}
-SCM
-Unfolded_repeat_iterator::get_music (Moment until)const
-{
- SCM s = SCM_EOL;
- if (until < pending_moment ())
- return s;
-
-
- Unfolded_repeat_iterator * me
- = dynamic_cast<Unfolded_repeat_iterator*> (this->clone ());
-
- while (me->ok ())
- {
- SCM nm = me->current_iter_p_->get_music (until -
- me->here_mom_);
-
- s = gh_append2 (nm, s);
-
- Moment m = 0;
- for (SCM i = nm; gh_pair_p(i); i = gh_cdr (i))
- m = m >? unsmob_music (gh_car (i))->length_mom ();
-
- if (m > Moment (0))
- break ;
- else
- me->next_element (false);
- }
-
- delete me;
-
- return s;
-}
-
-
-Music_iterator*
-Unfolded_repeat_iterator::try_music_in_children (Music * m) const
-{
- return current_iter_p_->try_music (m);
-}
+IMPLEMENT_CTOR_CALLBACK (Unfolded_repeat_iterator);
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