Run `make grand-replace'.

[lilypond.git] / lily / lily-parser.cc

diff --git a/lily/lily-parser.cc b/lily/lily-parser.cc
index a7816a154c6f88593c7df48461f1c25866486938..16af0c3cdf818135dc8686c97b362eed0a0e0fde 100644 (file)
--- a/lily/lily-parser.cc
+++ b/lily/lily-parser.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
@@ -221,44 +221,48 @@ get_midi (Lily_parser *parser)
   return layout;
 }
 
-/* Return a copy of the top of $papers stack */
+/* Return a copy of the top of $papers stack, or $defaultpaper if the
+ * stack is empty */
 Output_def *
 get_paper (Lily_parser *parser)
 {
   SCM papers = parser->lexer_->lookup_identifier ("$papers");
-  Output_def *layout = (papers == SCM_UNDEFINED || scm_is_null (papers)) ?
+  Output_def *layout = ((papers == SCM_UNDEFINED) || scm_is_null (papers)) ?
     0 : unsmob_output_def (scm_car (papers));
+  SCM default_paper = parser->lexer_->lookup_identifier ("$defaultpaper");
+  layout = layout ? layout : unsmob_output_def (default_paper);
+
   layout = layout ? dynamic_cast<Output_def *> (layout->clone ()) : new Output_def;
   layout->set_variable (ly_symbol2scm ("is-paper"), SCM_BOOL_T);
   return layout;
 }
 
-/* Initialize $papers stack with the default paper */
+/* Initialize (reset) the $papers stack */
 void
-init_papers (Lily_parser *parser, Output_def *default_paper)
+init_papers (Lily_parser *parser)
 {
-  parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
-                                  scm_list_1 (default_paper->self_scm ()));
+  parser->lexer_->set_identifier (ly_symbol2scm ("$papers"), SCM_EOL);
 }
 
-/* Stack a paper on top of $papers */
+/* Push a paper on top of $papers stack */
 void
-stack_paper (Lily_parser *parser, Output_def *paper)
+push_paper (Lily_parser *parser, Output_def *paper)
 {
   parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
                                   scm_cons (paper->self_scm (),
                                             parser->lexer_->lookup_identifier ("$papers")));
 }
 
-/* Unstack a paper from $papers */
+/* Pop a paper from $papers stack */
 void
-unstack_paper (Lily_parser *parser)
+pop_paper (Lily_parser *parser)
 {
-  parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
-                                  scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
+  if (! scm_is_null (parser->lexer_->lookup_identifier ("$papers")))
+    parser->lexer_->set_identifier (ly_symbol2scm ("$papers"),
+                                    scm_cdr (parser->lexer_->lookup_identifier ("$papers")));
 }
 
-/* Change the paper on top of $papers */
+/* Change the paper on top of $papers stack */
 void
 set_paper (Lily_parser *parser, Output_def *paper)
 {