From d8a0300bab3a77fba7fa6014ab7fa7c5ae388aaa Mon Sep 17 00:00:00 2001
From: Andi Albrecht <albrecht.andi@gmail.com>
Date: Sun, 12 Jul 2009 10:15:19 +0200
Subject: Add parent relationships.

---
 sqlparse/sql.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'sqlparse')

diff --git a/sqlparse/sql.py b/sqlparse/sql.py
index 1c99a53..b5ba902 100644
--- a/sqlparse/sql.py
+++ b/sqlparse/sql.py
@@ -15,11 +15,12 @@ class Token(object):
     the type of the token.
     """
 
-    __slots__ = ('value', 'ttype',)
+    __slots__ = ('value', 'ttype', 'parent')
 
     def __init__(self, ttype, value):
         self.value = value
         self.ttype = ttype
+        self.parent = None
 
     def __str__(self):
         return unicode(self).encode('latin-1')
@@ -268,6 +269,9 @@ class TokenList(Token):
         for t in tokens:
             self.tokens.remove(t)
         grp = grp_cls(tokens)
+        for token in tokens:
+            token.parent = grp
+        grp.parent = self
         self.tokens.insert(idx, grp)
         return grp
 
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