X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fglobal-context.cc;h=13d9738cd03d0da06e30d2671de4b231221d622f;hb=90875da23e480d263aecd479d5454b816d47dd8b;hp=40fe3a61cdb7a0b657398fc459bde7a7e6a87ed7;hpb=e0aab46ee287f06765b982c49fd0491ab033fce7;p=lilypond.git

diff --git a/lily/global-context.cc b/lily/global-context.cc
index 40fe3a61cd..13d9738cd0 100644
--- a/lily/global-context.cc
+++ b/lily/global-context.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "global-context.hh"
@@ -14,17 +14,13 @@ using namespace std;
 #include "context-def.hh"
 #include "dispatcher.hh"
 #include "international.hh"
-#include "lilypond-key.hh"
 #include "music-iterator.hh"
 #include "music.hh"
 #include "output-def.hh"
-#include "stream-event.hh"
 #include "warn.hh"
 
-Global_context::Global_context (Output_def *o, Object_key *key)
-  : Context (new Lilypond_context_key (key,
-				       Moment (0),
-				       "Global", "", 0))
+Global_context::Global_context (Output_def *o)
+  : Context ()
 {
   output_def_ = o;
   definition_ = find_context_def (o, ly_symbol2scm ("Global"));
@@ -93,8 +89,6 @@ Global_context::prepare (SCM sev)
   else
     prev_mom_ = now_mom_;
   now_mom_ = *mom;
-  
-  clear_key_disambiguations ();
 }
 
 Moment
@@ -114,7 +108,11 @@ Global_context::get_score_context () const
 SCM
 Global_context::get_output ()
 {
-  return get_score_context ()->get_property ("output");
+  Context * c = get_score_context ();
+  if (c)
+    return c->get_property ("output");
+  else
+    return SCM_EOL;
 }
 
 void
@@ -136,6 +134,13 @@ Global_context::run_iterator_on_me (Music_iterator *iter)
       if (w.main_part_.is_infinity () || w > final_mom)
 	break;
 
+      if (w == prev_mom_)
+	{
+	  programming_error ("Moment is not increasing. Aborting interpretation.");
+	  break ;
+	}
+
+      
       if (first)
 	{
 	  /*
@@ -191,3 +196,9 @@ Global_context::get_default_interpreter ()
   else
     return Context::get_default_interpreter ();
 }
+
+Global_context *
+unsmob_global_context (SCM x)
+{
+  return dynamic_cast<Global_context *> (unsmob_context (x));
+}