* Documentation/user/tutorial.itely: Revised (continued).

[lilypond.git] / lily / music-constructor.cc

diff --git a/lily/music-constructor.cc b/lily/music-constructor.cc
index 2615221615b801fe75b81e0a73b182ac64f721cd..e86672d7c7db6b6eccafc1a5b2979443485c56a6 100644 (file)
--- a/lily/music-constructor.cc
+++ b/lily/music-constructor.cc
@@ -3,12 +3,16 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2001--2004  Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 #include <map>                 // UGH.
+#include <assert.h>
+
+#include "warn.hh"
 #include "music-constructor.hh"
+
 typedef Music* (*Music_ctor) ();
 
 static std::map<String,Music_ctor> *ctors_map_;
@@ -33,8 +37,13 @@ get_music_ctor (String s)
 }
 
 Music* 
-get_music (String s)
+make_music (String s)
 {
-  return (*get_music_ctor (s)) ();
+  Music_ctor c = get_music_ctor (s);
+  if (!c)
+    programming_error (String ("No constructor for music: ") + s);
+  assert (c);
+  
+  return (*c) ();
 }