From da31597c40a0c2c9c62788bd34b70f67dc06b68d Mon Sep 17 00:00:00 2001
From: Reinhold Kainhofer <reinhold@kainhofer.com>
Date: Fri, 7 Nov 2008 20:22:40 +0100
Subject: [PATCH] MusicXML: Implement after-grace notes

also convert all grace notes at the end of a measure to after-graces, otherwise
they won't appear at all...
---
 python/musicxml.py | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/python/musicxml.py b/python/musicxml.py
index 588a469f97..f796bf5892 100644
--- a/python/musicxml.py
+++ b/python/musicxml.py
@@ -528,6 +528,13 @@ class Musicxml_voice:
             return self._lyrics
 
 
+def graces_to_aftergraces (pending_graces):
+    for gr in pending_graces:
+        gr._when = gr._prev_when
+        gr._measure_position = gr._prev_measure_position
+        gr._after_grace = True
+
+
 class Part (Music_xml_node):
     def __init__ (self):
         Music_xml_node.__init__ (self)
@@ -540,7 +547,7 @@ class Part (Music_xml_node):
             n = n._parent
 
         return n.get_named_child ('part-list')
-        
+       
     def interpret (self):
 	"""Set durations and starting points."""
         """The starting point of the very first note is 0!"""
@@ -615,10 +622,7 @@ class Part (Music_xml_node):
 		    if n.get_name() == 'backup':
 			dur = - dur
                         # reset all graces before the backup to after-graces:
-                        for n in pending_graces:
-                            n._when = n._prev_when
-                            n._measure_position = n._prev_measure_position
-                            n._after_grace = True
+                        graces_to_aftergraces (pending_graces)
                         pending_graces = []
 		    if n.get_maybe_exist_typed_child (Grace):
 			dur = Rational (0)
@@ -630,7 +634,7 @@ class Part (Music_xml_node):
 
                         rest._is_whole_measure = True
 
-                if (dur > Rational (0) 
+                if (dur > Rational (0)
                     and n.get_maybe_exist_typed_child (Chord)):
                     now = last_moment
                     measure_position = last_measure_position
@@ -676,10 +680,7 @@ class Part (Music_xml_node):
                         n.instrument_name = part_list.get_instrument (instrument.id)
 
             # reset all graces at the end of the measure to after-graces:
-            for n in pending_graces:
-                n._when = n._prev_when
-                n._measure_position = n._prev_measure_position
-                n._after_grace = True
+            graces_to_aftergraces (pending_graces)
             pending_graces = []
             # Incomplete first measures are not padded, but registered as partial
             if is_first_measure:
-- 
2.39.5