Sourcefile of GNU LilyPond music type setter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-#include "music.hh"
#include "engraver.hh"
-#include "engraver-group-engraver.hh"
-#include "grob.hh"
+
+#include "context.hh"
+#include "international.hh"
+#include "music.hh"
+#include "paper-column.hh"
#include "score-engraver.hh"
-#include "warn.hh"
#include "spanner.hh"
-#include "item.hh"
-#include "context.hh"
-#include "score-context.hh"
+#include "stream-event.hh"
+#include "warn.hh"
-Engraver_group_engraver*
+Engraver_group *
Engraver::get_daddy_engraver () const
{
- return dynamic_cast<Engraver_group_engraver*> (get_daddy_translator ());
+ return dynamic_cast<Engraver_group *> (get_daddy_translator ());
}
void
get_daddy_engraver ()->announce_grob (inf);
}
+void
+Engraver::announce_end_grob (Grob_info inf)
+{
+ get_daddy_engraver ()->announce_grob (inf);
+}
/*
- CAUSE is the object (typically a Music object) that
+ CAUSE is the object (typically a Stream_event object) that
was the reason for making E.
- */
+*/
void
-Engraver::announce_grob (Grob* e, SCM cause)
+Engraver::announce_grob (Grob *e, SCM cause)
{
- /*
- TODO: junk grob-info, and make a cause grob-property to store
- `causes' generically.
- */
- if (unsmob_music (cause) || unsmob_grob (cause))
- e->set_grob_property ("cause", cause);
-
- Grob_info i;
- i.grob_ = e;
- if (!i.origin_trans_)
- i.origin_trans_ = this;
-
- get_daddy_engraver ()->announce_grob (i);
+ /* TODO: Remove Music code when it's no longer needed */
+ if (Music *m = unsmob_music (cause))
+ {
+ cause = m->to_event ()->unprotect ();
+ }
+ if (unsmob_stream_event (cause) || unsmob_grob (cause))
+ e->set_property ("cause", cause);
+
+ Grob_info i (this, e);
+
+ Engraver_group *g = get_daddy_engraver ();
+ if (g)
+ g->announce_grob (i);
}
-
+/*
+ CAUSE is the object (typically a Music object) that
+ was the reason for making E.
+*/
void
-Engraver::typeset_grob (Grob*p)
+Engraver::announce_end_grob (Grob *e, SCM cause)
{
- Engraver *dad = get_daddy_engraver ();
- dad->typeset_grob (p);
+ /* TODO: Remove Music code when it's no longer needed */
+ if (Music *m = unsmob_music (cause))
+ {
+ cause = m->to_event ()->unprotect ();
+ }
+ if (e->get_property ("cause") == SCM_EOL
+ && (unsmob_stream_event (cause) || unsmob_grob (cause)))
+ e->set_property ("cause", cause);
+
+ Grob_info i (this, e);
+
+ i.start_end_ = STOP;
+ Engraver_group *g = get_daddy_engraver ();
+ if (g)
+ g->announce_grob (i);
}
-
-void
-Engraver::process_music ()
+Engraver::Engraver ()
{
-
}
-Engraver::Engraver()
+
+#ifndef NDEBUG
+static SCM creation_callback = SCM_EOL;
+LY_DEFINE (ly_set_grob_creation_callback, "ly:set-grob-creation-callback",
+ 1, 0, 0, (SCM cb),
+ "Specify a procedure that will be called every time a new grob"
+ " is created. The callback will receive as arguments the grob"
+ " that was created, the name of the C++ source file that caused"
+ " the grob to be created, and the corresponding line number in"
+ " the C++ source file.")
{
+ LY_ASSERT_TYPE (ly_is_procedure, cb, 1);
+
+ creation_callback = cb;
+
+ return SCM_UNSPECIFIED;
}
+#endif
+
+Grob *
+Engraver::internal_make_grob (SCM symbol, SCM cause, char const *name, char const *file, int line, char const *fun)
+{
+ (void) file;
+ (void) fun;
+ (void) line;
+ (void) name;
+
+ SCM props = updated_grob_properties (context (), symbol);
+
+ Grob *grob = 0;
+
+ SCM handle = scm_sloppy_assq (ly_symbol2scm ("meta"), props);
+ SCM klass = scm_cdr (scm_sloppy_assq (ly_symbol2scm ("class"), scm_cdr (handle)));
+
+ if (klass == ly_symbol2scm ("Item"))
+ grob = new Item (props);
+ else if (klass == ly_symbol2scm ("Spanner"))
+ grob = new Spanner (props);
+ else if (klass == ly_symbol2scm ("Paper_column"))
+ grob = new Paper_column (props);
+
+ assert (grob);
+ announce_grob (grob, cause);
+#ifndef NDEBUG
+ if (ly_is_procedure (creation_callback))
+ scm_apply_0 (creation_callback,
+ scm_list_n (grob->self_scm (), scm_from_locale_string (file),
+ scm_from_int (line), scm_from_locale_string (fun), SCM_UNDEFINED));
+#endif
-Score_engraver*
-Engraver::get_score_engraver () const
+ return grob;
+}
+
+Item *
+Engraver::internal_make_item (SCM x, SCM cause,
+ char const *name,
+ char const *file, int line, char const *fun)
{
- SCM t = get_score_context ()->implementation_;
- return dynamic_cast<Score_engraver*> (unsmob_translator (t));
+ Item *it = dynamic_cast<Item *> (internal_make_grob (x, cause, name, file, line, fun));
+ assert (it);
+ return it;
}
+Paper_column *
+Engraver::internal_make_column (SCM x, char const *name,
+ char const *file, int line, char const *fun)
+{
+ return dynamic_cast<Paper_column *> (internal_make_grob (x, SCM_EOL, name, file, line, fun));
+}
-void
-Engraver::do_announces ()
+Spanner *
+Engraver::internal_make_spanner (SCM x, SCM cause, char const *name, char const *file, int line, char const *fun)
{
+ Spanner *sp = dynamic_cast<Spanner *> (internal_make_grob (x, cause, name, file, line, fun));
+ assert (sp);
+ return sp;
}
-ENTER_DESCRIPTION(Engraver,
- "", "",
- "",
- "", "", "");
+#include "translator.icc"
+
+ADD_TRANSLATOR (Engraver,
+ /* doc */
+ "Base class for engravers. Does nothing, so it is not used.",
+
+ /* create */
+ "",
+
+ /* read */
+ "",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff