/*
- engravergroup.cc -- implement Engraver_group_engraver
+ engraver-group-engraver.cc -- implement Engraver_group_engraver
source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "flower-proto.hh"
#include "engraver-group-engraver.hh"
-#include "engraver.hh"
-#include "debug.hh"
-#include "paper-score.hh"
-#include "score-element.hh"
-
-ADD_THIS_TRANSLATOR(Engraver_group_engraver);
+#include "flower-proto.hh"
+#include "warn.hh"
+#include "paper-score.hh"
+#include "grob.hh"
+#include "context.hh"
void
-Engraver_group_engraver::announce_element (Score_element_info info)
+Engraver_group_engraver::announce_grob (Grob_info info)
{
- announce_info_arr_.push (info);
- Engraver::announce_element (info);
+ announce_infos_.push (info);
+ get_daddy_engraver ()->announce_grob (info);
}
+SCM find_acknowledge_engravers (SCM gravlist, SCM meta);
+SCM find_accept_engravers (SCM gravlist, SCM music_descr);
+
void
-Engraver_group_engraver::do_announces()
+Engraver_group_engraver::acknowledge_grobs ()
{
- for (Cons<Translator> *p = trans_p_list_.head_; p; p = p->next_)
+ if (!announce_infos_.size ())
+ return;
+
+ SCM tab = get_property ("acknowledgeHashTable");
+ SCM name_sym = ly_symbol2scm ("name");
+ SCM meta_sym = ly_symbol2scm ("meta");
+
+ for (int j = 0; j < announce_infos_.size (); j++)
{
- if (Engraver_group_engraver *trg = dynamic_cast <Engraver_group_engraver *> (p->car_))
- trg->do_announces ();
+ Grob_info info = announce_infos_[j];
+
+ SCM meta = info.grob_->internal_get_property (meta_sym);
+ SCM nm = scm_assoc (name_sym, meta);
+ if (scm_is_pair (nm))
+ nm = scm_cdr (nm);
+ else
+ {
+ /*
+ it's tempting to put an assert for
+ immutable_property_alist_ == '(), but in fact, some
+ engravers (clef-engraver) add some more information to the
+ immutable_property_alist_ (after it has been '()-ed).
+
+ We ignore the grob anyway. He who has no name, shall not
+ be helped. */
+
+ continue;
+ }
+
+ SCM acklist = scm_hashq_ref (tab, nm, SCM_UNDEFINED);
+ if (acklist == SCM_BOOL_F)
+ {
+ acklist = find_acknowledge_engravers (scm_cons (self_scm (), get_simple_trans_list ()), meta);
+ scm_hashq_set_x (tab, nm, acklist);
+ }
+
+ for (SCM p = acklist; scm_is_pair (p); p = scm_cdr (p))
+ {
+ Translator *t = unsmob_translator (scm_car (p));
+ Engraver *eng = dynamic_cast<Engraver *> (t);
+ if (eng && eng != info.origin_trans_)
+ eng->acknowledge_grob (info);
+ }
}
+}
+
+/*
+ Ugh. This is slightly expensive. We could/should cache the value of
+ the group count?
+*/
+int
+Engraver_group_engraver::pending_grob_count () const
+{
+ int count = announce_infos_.size ();
+ for (SCM s = context ()->children_contexts ();
+ scm_is_pair (s); s = scm_cdr (s))
+ {
+ Context *c = unsmob_context (scm_car (s));
+ Engraver_group_engraver *group
+ = dynamic_cast<Engraver_group_engraver *> (c->implementation ());
- Request dummy_req;
+ if (group)
+ count += group->pending_grob_count ();
+ }
+ return count;
+}
- while (announce_info_arr_.size ())
+void
+Engraver_group_engraver::do_announces ()
+{
+ do
{
- for (int j =0; j < announce_info_arr_.size(); j++)
+ for (SCM s = context ()->children_contexts ();
+ scm_is_pair (s); s = scm_cdr (s))
{
- Score_element_info info = announce_info_arr_[j];
-
- if (!info.req_l_)
- info.req_l_ = &dummy_req;
-
- for (Cons<Translator> *p = trans_p_list_.head_; p; p = p->next_)
- {
- if (!dynamic_cast <Engraver_group_engraver *> (p->car_))
- {
- Engraver * eng = dynamic_cast<Engraver*> (p->car_);
- if (eng && eng!= info.origin_trans_l_arr (this)[0])
- eng->acknowledge_element (info);
- }
- }
+ Context *c = unsmob_context (scm_car (s));
+ Engraver_group_engraver *group
+ = dynamic_cast<Engraver_group_engraver *> (c->implementation ());
+ if (group)
+ group->do_announces ();
}
-
- announce_info_arr_.clear ();
- for (Cons<Translator> *p = trans_p_list_.head_; p; p = p->next_)
+
+ while (1)
{
- if (!dynamic_cast <Engraver_group_engraver *> (p->car_))
- {
- Engraver * eng = dynamic_cast<Engraver*> (p->car_);
- if (eng)
- eng->process_acknowledged ();
- }
+ engraver_each (get_simple_trans_list (),
+ &Engraver::process_acknowledged_grobs);
+
+ if (announce_infos_.size () == 0)
+ break;
+
+ acknowledge_grobs ();
+ announce_infos_.clear ();
}
}
+ while (pending_grob_count () > 0);
}
+void
+Engraver_group_engraver::initialize ()
+{
+ SCM tab = scm_make_vector (scm_int2num (61), SCM_BOOL_F);
+ context ()->set_property ("acknowledgeHashTable", tab);
+
+ Translator_group::initialize ();
+}
+
+Engraver_group_engraver::Engraver_group_engraver () {}
+
+ADD_TRANSLATOR (Engraver_group_engraver,
+ /* descr */ "A group of engravers taken together",
+ /* creats*/ "",
+ /* accepts */ "",
+ /* acks */ "",
+ /* reads */ "",
+ /* write */ "");
+
+/*****************/
+
+bool
+engraver_valid (Translator *tr, SCM ifaces)
+{
+ SCM ack_ifs = scm_assoc (ly_symbol2scm ("interfaces-acked"), tr->translator_description ());
+ ack_ifs = scm_cdr (ack_ifs);
+ for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
+ if (scm_c_memq (scm_car (s), ack_ifs) != SCM_BOOL_F)
+ return true;
+ return false;
+}
+
+SCM
+find_acknowledge_engravers (SCM gravlist, SCM meta_alist)
+{
+ SCM ifaces = scm_cdr (scm_assoc (ly_symbol2scm ("interfaces"), meta_alist));
+
+ SCM l = SCM_EOL;
+ for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Translator *tr = unsmob_translator (scm_car (s));
+ if (engraver_valid (tr, ifaces))
+ l = scm_cons (tr->self_scm (), l);
+ }
+ l = scm_reverse_x (l, SCM_EOL);
+
+ return l;
+}
+
+/* c&p engraver-group.cc */
+void
+recurse_down_engravers (Context *c, Engraver_method ptr, bool context_first)
+{
+ Engraver_group_engraver *tg
+ = dynamic_cast<Engraver_group_engraver *> (c->implementation ());
+ if (!context_first)
+ {
+ engraver_each (tg->get_simple_trans_list (),
+ ptr);
+ (tg->*ptr) ();
+ }
+ for (SCM s = c->children_contexts (); scm_is_pair (s);
+ s = scm_cdr (s))
+ {
+ recurse_down_engravers (unsmob_context (scm_car (s)), ptr, context_first);
+ }
+ if (context_first)
+ {
+ engraver_each (tg->get_simple_trans_list (),
+ ptr);
+ (tg->*ptr) ();
+ }
+}
+void
+engraver_each (SCM list, Engraver_method method)
+{
+ for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
+ {
+ Engraver *e = dynamic_cast<Engraver *> (unsmob_translator (scm_car (p)));
+ if (e)
+ (e->*method) ();
+ }
+}
projects / lilypond.git / blobdiff