--- a/python/ppci/common.py	Fri Jul 26 16:46:02 2013 +0200
+++ b/python/ppci/common.py	Fri Jul 26 20:26:05 2013 +0200
@@ -13,10 +13,14 @@
         return 'Token({0}, {1})'.format(self.typ, self.val)
 
 class SourceLocation:
-   def __init__(self, row, col, ln):
-      self.row = row
-      self.col = col
-      self.length = ln
+    def __init__(self, row, col, ln):
+        self.row = row
+        self.col = col
+        self.length = ln
+        self.filename = ''
+
+    def __repr__(self):
+        return '{}, {}'.format(self.row, self.col)
 
 SourceRange = namedtuple('SourceRange', ['p1', 'p2'])