X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fperformance-scheme.cc;h=a00e6b8efd13e52094c9f6f9ef5d006f4544dc9e;hb=b5362bb4f3c8eb130eb451b60d98271dff79f444;hp=1d760da6dea9b8c2c7fb292289dd6ac3326d461f;hpb=75eebcb49e52d296b1da3e1074e0825d2c780db4;p=lilypond.git

diff --git a/lily/performance-scheme.cc b/lily/performance-scheme.cc
index 1d760da6de..a00e6b8efd 100644
--- a/lily/performance-scheme.cc
+++ b/lily/performance-scheme.cc
@@ -3,21 +3,19 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "performance.hh"
 
 LY_DEFINE (ly_performance_write, "ly:performance-write",
 	   2, 0, 0, (SCM performance, SCM filename),
-	   "Write @var{performance} to @var{filename}")
+	   "Write @var{performance} to @var{filename}.")
 {
-  Performance *perf = dynamic_cast<Performance *> (unsmob_music_output (performance));
+  LY_ASSERT_TYPE (unsmob_performance, performance, 1);
+  LY_ASSERT_TYPE (scm_is_string, filename, 2);
 
-  SCM_ASSERT_TYPE (perf, performance, SCM_ARG1, __FUNCTION__, "Performance");
-  SCM_ASSERT_TYPE (scm_is_string (filename), filename, SCM_ARG2, __FUNCTION__, "file name");
-
-  perf->write_output (ly_scm2string (filename));
+  unsmob_performance (performance)->write_output (ly_scm2string (filename));
   return SCM_UNSPECIFIED;
 }