Web-ja: update introduction

[lilypond.git] / lily / stream-event.cc

diff --git a/lily/stream-event.cc b/lily/stream-event.cc
index 1019c9e85bf728b06b3178fecb85c4374dfd5d10..64c9a979d9950907dde19ffbb0a49978a5a21f12 100644 (file)
--- a/lily/stream-event.cc
+++ b/lily/stream-event.cc
@@ -1,17 +1,28 @@
 /*
-  stream-event.cc -- implement Stream_event
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2005--2015 Erik Sandberg  <mandolaerik@gmail.com>
 
-  (c) 2005-2006 Erik Sandberg  <mandolaerik@gmail.com>
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "stream-event.hh"
 
-#include "ly-smobs.icc"
 #include "context.hh"
 #include "input.hh"
-#include "input-smob.hh"
+#include "music.hh"
+#include "pitch.hh"
 
 /* TODO: Rename Stream_event -> Event */
 
@@ -20,67 +31,78 @@ Stream_event::Stream_event ()
 {
 }
 
-Stream_event::Stream_event (SCM event_class, SCM mutable_props)
+Stream_event::Stream_event (SCM event_class, SCM immutable_props)
   : Prob (ly_symbol2scm ("Stream_event"),
-         scm_list_1 (scm_cons (ly_symbol2scm ("class"), event_class)))
-{
-  mutable_property_alist_ = mutable_props;
-}
-
-Stream_event::Stream_event (SCM property_alist)
-  : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
+          scm_acons (ly_symbol2scm ("class"), event_class, immutable_props))
 {
-  mutable_property_alist_ = property_alist;
 }
 
 Stream_event::Stream_event (SCM class_name, Input *origin)
   : Prob (ly_symbol2scm ("Stream_event"),
-         scm_list_1 (scm_cons (ly_symbol2scm ("class"), class_name)))
+          scm_list_1 (scm_cons (ly_symbol2scm ("class"), class_name)))
 {
   if (origin)
     set_spot (origin);
 }
 
-Stream_event::Stream_event (Stream_event *ev)
-  : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
+SCM
+Stream_event::copy_mutable_properties () const
 {
-  mutable_property_alist_ = scm_copy_tree (ev->mutable_property_alist_);
-  immutable_property_alist_ = ev->immutable_property_alist_;
+  return ly_event_deep_copy (mutable_property_alist_);
 }
 
 Input *
 Stream_event::origin () const
 {
-  Input *i = unsmob_input (get_property ("origin"));
+  Input *i = unsmob<Input> (get_property ("origin"));
   return i ? i : &dummy_input_global;
 }
 
 void
 Stream_event::set_spot (Input *i)
 {
-  set_property ("origin", make_input (*i));
+  set_property ("origin", i->smobbed_copy ());
 }
 
 bool
 Stream_event::internal_in_event_class (SCM class_name)
 {
   SCM cl = get_property ("class");
-  cl = scm_call_1 (ly_lily_module_constant ("ly:make-event-class"), cl);
-  return scm_c_memq (class_name, cl) != SCM_BOOL_F;
+  return scm_is_true (scm_c_memq (class_name, cl));
 }
 
-IMPLEMENT_TYPE_P (Stream_event, "ly:stream-event?");
-
 MAKE_SCHEME_CALLBACK (Stream_event, undump, 1);
 MAKE_SCHEME_CALLBACK (Stream_event, dump, 1);
 
+void
+Stream_event::make_transposable ()
+{
+  /* This is in preparation for transposing stuff
+     that may be defined in the immutable part */
+
+  for (SCM s = immutable_property_alist_; scm_is_pair (s); s = scm_cdr (s))
+    {
+      SCM entry = scm_car (s);
+      SCM prop = scm_car (entry);
+      SCM val = scm_cdr (entry);
+
+      if ((unsmob<Pitch> (val)
+           || (scm_is_eq (prop, ly_symbol2scm ("element")) && unsmob<Music> (val))
+           || (scm_is_eq (prop, ly_symbol2scm ("elements")) && scm_is_pair (val))
+           || (scm_is_eq (prop, ly_symbol2scm ("pitch-alist")) && scm_is_pair (val)))
+          && scm_is_false (scm_assq (prop, mutable_property_alist_)))
+        mutable_property_alist_
+          = scm_acons (prop, music_deep_copy (val), mutable_property_alist_);
+    }
+}
+
 SCM
 Stream_event::dump (SCM self)
 {
-  Stream_event *ev = unsmob_stream_event (self);
+  Stream_event *ev = unsmob<Stream_event> (self);
   // Reversed alists look prettier.
   return scm_cons (scm_reverse (ev->immutable_property_alist_),
-                  scm_reverse (ev->mutable_property_alist_));
+                   scm_reverse (ev->mutable_property_alist_));
 }
 
 SCM
@@ -91,9 +113,3 @@ Stream_event::undump (SCM data)
   obj->mutable_property_alist_ = scm_reverse (scm_cdr (data));
   return obj->unprotect ();
 }
-
-Stream_event *
-unsmob_stream_event (SCM m)
-{
-  return dynamic_cast<Stream_event*> (unsmob_prob (m));
-}