# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1290730004 -3600
# Node ID e0bd00412dbc9ac14807de7a3c70b1d8ec0e0ea8
# Parent  2f94fb23bcff230c9e429d70f64bd44d67ccf69d
Introduced parameterisation of phrase discovery using different phrase filters
to that provided.

diff -r 2f94fb23bcff -r e0bd00412dbc iixr/phrases.py
--- a/iixr/phrases.py	Fri Nov 26 01:05:52 2010 +0100
+++ b/iixr/phrases.py	Fri Nov 26 01:06:44 2010 +0100
@@ -80,10 +80,11 @@
 
     "Phrase iteration using the phrase filter."
 
-    def __init__(self, sequences):
+    def __init__(self, sequences, filter=None):
         CommonIterator.__init__(self, sequences)
         self.current_doc = None
         self.current_positions = None
+        self.filter = filter or PhraseFilter
 
     def next(self):
 
@@ -99,7 +100,7 @@
                 # Handle incomplete phrases.
 
                 try:
-                    self.current_positions = PhraseFilter(all_positions)
+                    self.current_positions = self.filter(all_positions)
                 except StopIteration:
                     self.current_doc = None
                     continue