* lily/include/object-key-undumper.hh (Module): new file.

[lilypond.git] / lily / include / gregorian-ligature.hh

diff --git a/lily/include/gregorian-ligature.hh b/lily/include/gregorian-ligature.hh
index d1811e4d960008c35442dce7d5def6bb73c4a65f..0fd627c400bc0e64b58c42e8ead7b7530e9645fd 100644 (file)
--- a/lily/include/gregorian-ligature.hh
+++ b/lily/include/gregorian-ligature.hh
@@ -3,20 +3,26 @@
 
   source file of the GNU LilyPond music typesetter
   
-  (c) 2003 Juergen Reuter <reuter@ipd.uka.de>
+  (c) 2003--2004 Juergen Reuter <reuter@ipd.uka.de>
 */
 
 #ifndef GREGORIAN_LIGATURE_HH
 #define GREGORIAN_LIGATURE_HH
 
+class Gregorian_ligature {
+public:
+  static bool has_interface (Grob *);
+  static String prefixes_to_str (Grob *);
+};
+
 /*
  * Head prefixes: these bit-mask constants are used to represent
  * attributes immediately derived from user input (e.g. by the user
  * setting a gregorian ligature grob property or using the "\~"
  * keyword).  If the according bit of the head prefix value is set,
  * the attribute applies for this head.  The binary opereator "\~" is
- * marked only upon the second head (i.e. the note that comes after
- * the operator).
+ * treated like a prefix for the head that follows the operator, but
+ * does not affect the head that precedes the operator, if any.
  */
 #define VIRGA        0x0001 // attribute "\virga"
 #define STROPHA      0x0002 // attribute "\stropha"
@@ -33,7 +39,10 @@
 
 /*
  * Ligature context info: these attributes are derived from the head
- * prefixes by considering the current and the following head.
+ * prefixes by considering the current and the two neighbouring heads.
+ *
+ * These definitions may be extended by more specific Gregorian
+ * ligatures such as vaticana-ligature.hh.
  */
 #define PES_LOWER       0x0001 // this is a head before "\~" in an
                               // ascending melody
@@ -43,7 +52,6 @@
                               // descending melody
 #define FLEXA_RIGHT     0x0008 // this is a head after "\~" in a
                               // descending melody
-#define AFTER_VIRGA     0x0010 // previous head was a virga
 #define AFTER_DEMINUTUM 0x0020 // previous head was a deminutum
 
 #endif /* GREGORIAN_LIGATURE_HH */