Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

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

diff --git a/lily/stream-event.cc b/lily/stream-event.cc
index eb530046a0fa5fd8548484be070861f486ca9c6c..64c9a979d9950907dde19ffbb0a49978a5a21f12 100644 (file)
--- a/lily/stream-event.cc
+++ b/lily/stream-event.cc
@@ -1,122 +1,115 @@
 /*
-  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"
-
-Stream_event::~Stream_event ()
-{
-}
-
-void
-Stream_event::init ()
-{
-  self_scm_ = SCM_EOL;
-  property_alist_ = SCM_EOL;
+#include "music.hh"
+#include "pitch.hh"
 
-  smobify_self ();
-}
+/* TODO: Rename Stream_event -> Event */
 
 Stream_event::Stream_event ()
+  : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
 {
-  init ();
 }
 
-Stream_event::Stream_event (SCM property_alist)
+Stream_event::Stream_event (SCM event_class, SCM immutable_props)
+  : Prob (ly_symbol2scm ("Stream_event"),
+          scm_acons (ly_symbol2scm ("class"), event_class, immutable_props))
 {
-  init ();
-  property_alist_ = property_alist;
 }
 
-/*
-   Hm. Perhaps Stream_event should be a prob, with class_name as an
-   immutable property?
- */
 Stream_event::Stream_event (SCM class_name, Input *origin)
+  : Prob (ly_symbol2scm ("Stream_event"),
+          scm_list_1 (scm_cons (ly_symbol2scm ("class"), class_name)))
 {
-  init ();
-  set_property ("class", class_name);
   if (origin)
     set_spot (origin);
 }
 
-Stream_event::Stream_event (Stream_event *ev)
+SCM
+Stream_event::copy_mutable_properties () const
 {
-  init ();
-  property_alist_ = scm_copy_tree (ev->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));
-}
-
-SCM
-Stream_event::mark_smob (SCM sm)
+void
+Stream_event::set_spot (Input *i)
 {
-  Stream_event *me = (Stream_event *) SCM_CELL_WORD_1 (sm);
-  return me->property_alist_;
+  set_property ("origin", i->smobbed_copy ());
 }
 
-int
-Stream_event::print_smob (SCM s, SCM port, scm_print_state *)
+bool
+Stream_event::internal_in_event_class (SCM class_name)
 {
-  scm_puts ("#<Stream_event ", port);
-  scm_write (dump (s), port);
-  scm_puts (" >", port);
-  return 1;
+  SCM cl = get_property ("class");
+  return scm_is_true (scm_c_memq (class_name, cl));
 }
 
-IMPLEMENT_SMOBS (Stream_event);
-IMPLEMENT_DEFAULT_EQUAL_P (Stream_event);
-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_reverse (ev->property_alist_);
+  return scm_cons (scm_reverse (ev->immutable_property_alist_),
+                   scm_reverse (ev->mutable_property_alist_));
 }
 
 SCM
 Stream_event::undump (SCM data)
 {
   Stream_event *obj = new Stream_event ();
-  obj->property_alist_ = scm_reverse (data);
+  obj->immutable_property_alist_ = scm_reverse (scm_car (data));
+  obj->mutable_property_alist_ = scm_reverse (scm_cdr (data));
   return obj->unprotect ();
 }
-
-SCM
-Stream_event::internal_get_property (SCM sym) const
-{
-  SCM s = scm_sloppy_assq (sym, property_alist_);
-  if (s != SCM_BOOL_F)
-    return scm_cdr (s);
-  return SCM_EOL;
-}
-
-void 
-Stream_event::internal_set_property (SCM prop, SCM val)
-{
-  property_alist_ = scm_assq_set_x (property_alist_, prop, val);
-}