/*
- Simultaneous_music-iterator.cc -- implement Simultaneous_music_iterator
+ simultaneous-music-iterator.cc -- implement Simultaneous_music_iterator
source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "translator-group.hh"
-#include "debug.hh"
#include "simultaneous-music-iterator.hh"
-
-#include "music-list.hh"
+#include "music.hh"
+#include "context.hh"
+#include "warn.hh"
+#include "context-def.hh"
Simultaneous_music_iterator::Simultaneous_music_iterator ()
{
+ create_separate_contexts_ = false;
+ children_list_ = SCM_EOL;
}
-Simultaneous_music_iterator::~Simultaneous_music_iterator ()
+void
+Simultaneous_music_iterator::derived_mark () const
{
+ scm_gc_mark (children_list_);
}
void
-Simultaneous_music_iterator::construct_children()
+Simultaneous_music_iterator::derived_substitute (Context *f, Context *t)
{
- int j = 0;
- for (PCursor<Music*> i (simultaneous_music_l ()->music_p_list_p_->top());
- i.ok(); j++, i++)
- {
- Music_iterator * mi = get_iterator_p (i.ptr());
- if (mi->ok())
- {
- if (simultaneous_music_l ()->translator_type_str_.empty_b ())
- set_translator (mi->report_to_l()->ancestor_l (0));
- children_p_list_.bottom().add (mi);
- }
- else
- delete mi;
- }
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob_iterator (scm_car (s))->substitute_outlet (f, t);
}
-
void
-Simultaneous_music_iterator::do_print() const
+Simultaneous_music_iterator::construct_children ()
{
-#ifndef NPRINT
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
+ int j = 0;
+
+ SCM i = get_music ()->get_property ("elements");
+
+ children_list_ = SCM_EOL;
+ SCM *tail = &children_list_;
+ for (; scm_is_pair (i); i = scm_cdr (i), j++)
{
- i->print();
+ Music *mus = unsmob_music (scm_car (i));
+
+ SCM scm_iter = get_static_get_iterator (mus);
+ Music_iterator *mi = unsmob_iterator (scm_iter);
+
+ /* if create_separate_contexts_ is set, create a new context with the
+ number number as name */
+
+ SCM name = ly_symbol2scm (get_outlet ()->context_name ().to_str0 ());
+ Context *t = (j && create_separate_contexts_)
+ ? get_outlet ()->find_create_context (name, to_string (j), SCM_EOL)
+ : get_outlet ();
+
+ if (!t)
+ t = get_outlet ();
+
+ mi->init_translator (mus, t);
+ mi->construct_children ();
+
+ if (mi->ok ())
+ {
+ *tail = scm_cons (scm_iter, *tail);
+ tail = SCM_CDRLOC (*tail);
+ }
+ else
+ mi->quit ();
}
-#endif
}
void
-Simultaneous_music_iterator::do_process_and_next (Moment until)
+Simultaneous_music_iterator::process (Moment until)
{
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok ();)
+ SCM *proc = &children_list_;
+ while (scm_is_pair (*proc))
{
- if (i->next_moment() == until)
+ Music_iterator *i = unsmob_iterator (scm_car (*proc));
+ if (i->run_always ()
+ || i->pending_moment () == until)
+ i->process (until);
+ if (!i->ok ())
{
- i->process_and_next (until);
+ i->quit ();
+ *proc = scm_cdr (*proc);
}
- if (!i->ok())
- delete i.remove_p();
else
- i++;
+ proc = SCM_CDRLOC (*proc);
}
- Music_iterator::do_process_and_next (until);
}
-
-
-
Moment
-Simultaneous_music_iterator::next_moment() const
+Simultaneous_music_iterator::pending_moment () const
{
Moment next;
next.set_infinite (1);
- for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
- next = next <? i->next_moment() ;
+
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ next = min (next, it->pending_moment ());
+ }
+
return next;
}
-
+bool
+Simultaneous_music_iterator::ok () const
+{
+ bool run_always_ok = false;
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ if (!it->run_always ())
+ return true;
+ else
+ run_always_ok = run_always_ok || it->ok ();
+ }
+ return run_always_ok;
+}
bool
-Simultaneous_music_iterator::ok() const
+Simultaneous_music_iterator::run_always () const
+{
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Music_iterator *it = unsmob_iterator (scm_car (s));
+ if (it->run_always ())
+ return true;
+ }
+ return false;
+}
+
+Music_iterator *
+Simultaneous_music_iterator::try_music_in_children (Music *m) const
{
- return children_p_list_.size();
+ Music_iterator *b = 0;
+ for (SCM s = children_list_; !b && scm_is_pair (s); s = scm_cdr (s))
+ b = unsmob_iterator (scm_car (s))->try_music (m);
+ return b;
}
-Simultaneous_music*
-Simultaneous_music_iterator::simultaneous_music_l ()const
+void
+Simultaneous_music_iterator::do_quit ()
{
- return ( Simultaneous_music *) music_l_;
+ for (SCM s = children_list_; scm_is_pair (s); s = scm_cdr (s))
+ unsmob_iterator (scm_car (s))->quit ();
}
+
+IMPLEMENT_CTOR_CALLBACK (Simultaneous_music_iterator);