X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmusic-scheme.cc;h=55f1333bf5dbb297d3f00426865113b7c6c5a871;hb=0b544cfb7332615ef809b71b57ab656741311ae1;hp=f8eca4a6fe4d80faa004b9bfb7d734efcfbf0807;hpb=4bb29573149a0ffa1f881c5e38a0fe68e9e76b67;p=lilypond.git

diff --git a/lily/music-scheme.cc b/lily/music-scheme.cc
index f8eca4a6fe..55f1333bf5 100644
--- a/lily/music-scheme.cc
+++ b/lily/music-scheme.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2005--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2005--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -20,6 +20,7 @@
 #include "music.hh"
 
 #include "duration.hh"
+#include "program-option.hh"
 #include "warn.hh"
 
 LY_DEFINE (ly_music_length, "ly:music-length",
@@ -73,6 +74,17 @@ LY_DEFINE (ly_music_p, "ly:music?",
   return scm_from_bool (unsmob_music (obj));
 }
 
+LY_DEFINE (ly_event_p, "ly:event?",
+           1, 0, 0, (SCM obj),
+           "Is @var{obj} a proper (non-rhythmic) event object?")
+{
+  if (Music *m = unsmob_music (obj))
+    {
+      return scm_from_bool (m->is_mus_type ("post-event"));
+    }
+  return SCM_BOOL_F;
+}
+
 /* todo: property args */
 LY_DEFINE (ly_music_mutable_properties, "ly:music-mutable-properties",
            1, 0, 0, (SCM mus),
@@ -102,18 +114,30 @@ LY_DEFINE (ly_music_list_p, "ly:music-list?",
 
 LY_DEFINE (ly_music_deep_copy, "ly:music-deep-copy",
            1, 0, 0, (SCM m),
-           "Copy @var{m} and all sub expressions of@tie{}@var{m}.")
+           "Copy @var{m} and all sub expressions of@tie{}@var{m}."
+           " @var{m} may be an arbitrary type; cons cells and music"
+           " are copied recursively.")
 {
-  SCM copy = m;
   if (unsmob_music (m))
+      return unsmob_music (m)->clone ()->unprotect ();
+  if (scm_is_pair (m))
     {
-      Music *mcopy = unsmob_music (m)->clone ();
-      copy = mcopy->unprotect ();
+      SCM copy = SCM_EOL;
+      do
+        {
+          copy = scm_cons (ly_music_deep_copy (scm_car (m)), copy);
+          m = scm_cdr (m);
+        }
+      while (scm_is_pair (m));
+      // Oh, come on, GUILE.  Why do you require the second argument
+      // of scm_reverse_x to be a proper list?  That makes no sense.
+      // return scm_reverse_x (copy, ly_music_deep_copy (m));
+      SCM last_cons = copy;
+      copy = scm_reverse_x (copy, SCM_EOL);
+      scm_set_cdr_x (last_cons, ly_music_deep_copy (m));
+      return copy;
     }
-  else if (scm_is_pair (m))
-    copy = scm_cons (ly_music_deep_copy (scm_car (m)),
-                     ly_music_deep_copy (scm_cdr (m)));
-  return copy;
+  return m;
 }
 
 LY_DEFINE (ly_music_transpose, "ly:music-transpose",
@@ -147,6 +171,21 @@ LY_DEFINE (ly_music_compress, "ly:music-compress",
   return sc->self_scm ();
 }
 
+LY_DEFINE (ly_make_music_relative_x, "ly:make-music-relative!",
+           2, 0, 0, (SCM music, SCM pitch),
+           "Make @var{music} relative to @var{pitch},"
+           " return final pitch.")
+{
+  LY_ASSERT_TYPE (unsmob_music, music, 1);
+  LY_ASSERT_TYPE (unsmob_pitch, pitch, 2);
+
+  Pitch start = *unsmob_pitch (pitch);
+  Music *m = unsmob_music (music);
+  Pitch last = m->to_relative_octave (start);
+
+  return last.smobbed_copy ();
+}
+
 LY_DEFINE (ly_music_duration_length, "ly:music-duration-length", 1, 0, 0,
            (SCM mus),
            "Extract the duration field from @var{mus} and return the"