X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fpaper-book-scheme.cc;h=275e3ced535073f083ecb470d4e40882b4d5555f;hb=d40cd7d24fb9d43ca880777d8a671b90d5d809da;hp=01e777220b24655c19c0a860bcd32849a9392082;hpb=f9214bac21e9926dc3248416f58190c98c4167a9;p=lilypond.git

diff --git a/lily/paper-book-scheme.cc b/lily/paper-book-scheme.cc
index 01e777220b..275e3ced53 100644
--- a/lily/paper-book-scheme.cc
+++ b/lily/paper-book-scheme.cc
@@ -12,8 +12,9 @@
 
 LY_DEFINE (ly_paper_book_pages, "ly:paper-book-pages",
 	   1, 0, 0, (SCM pb),
-	   "Return pages in book PB.")
+	   "Return pages in book @var{pb}.")
 {
+  LY_ASSERT_SMOB (Paper_book, pb, 1);
   return unsmob_paper_book (pb)->pages ();
 }
 
@@ -21,8 +22,8 @@ LY_DEFINE (ly_paper_book_scopes, "ly:paper-book-scopes",
 	   1, 0, 0, (SCM book),
 	   "Return pages in layout book @var{book}.")
 {
+  LY_ASSERT_SMOB (Paper_book, book, 1);
   Paper_book *pb = unsmob_paper_book (book);
-  SCM_ASSERT_TYPE (pb, book, SCM_ARG1, __FUNCTION__, "Paper_book");
 
   SCM scopes = SCM_EOL;
   if (ly_is_module (pb->header_))
@@ -35,21 +36,23 @@ LY_DEFINE (ly_paper_book_performances, "ly:paper-book-performances",
 	   1, 0, 0, (SCM paper_book),
 	   "Return performances in book @var{paper-book}.")
 {
+  LY_ASSERT_SMOB (Paper_book, paper_book, 1);
   return unsmob_paper_book (paper_book)->performances ();
 }
 
 LY_DEFINE (ly_paper_book_systems, "ly:paper-book-systems",
 	   1, 0, 0, (SCM pb),
-	   "Return systems in book PB.")
+	   "Return systems in book @var{pb}.")
 {
+  LY_ASSERT_SMOB (Paper_book, pb, 1);
   return unsmob_paper_book (pb)->systems ();
 }
 
 LY_DEFINE (ly_paper_book_paper, "ly:paper-book-paper",
 	   1, 0, 0, (SCM pb),
-	   "Return pages in book PB.")
+	   "Return pages in book @var{pb}.")
 {
+  LY_ASSERT_SMOB (Paper_book, pb, 1);
   Paper_book *pbook = unsmob_paper_book (pb);
-  SCM_ASSERT_TYPE(pbook, pb, SCM_ARG1, __FUNCTION__, "Paper_book");
   return pbook->paper_->self_scm ();
 }