From 07d3cb1037e5d7e28a8bd68c357fb0733700e27b Mon Sep 17 00:00:00 2001
From: gwen <gremond@cadoles.com>
Date: Mon, 10 Dec 2012 09:53:13 +0100
Subject: [PATCH] constants heritage

---
 tiramisu/setting.py | 33 ++++++++++++++++-----------------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/tiramisu/setting.py b/tiramisu/setting.py
index 2bc3a9f..927fae3 100644
--- a/tiramisu/setting.py
+++ b/tiramisu/setting.py
@@ -20,48 +20,47 @@
 # the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
 # the whole pypy projet is under MIT licence
 # ____________________________________________________________
-
 class _const:
     """convenient class that emulates a module
-    and builds constants (that is, unique group names)"""
-    class GroupError(TypeError): pass
+    and builds constants (that is, unique names)"""
+    class ConstError(TypeError): pass
 
     def __setattr__(self, name, value):
         if self.__dict__.has_key(name):
-            raise self.GroupError, "Can't rebind group (%s)"%name
+            raise self.ConstError, "Can't rebind group (%s)"%name
         self.__dict__[name] = value
 
     def __delattr__(self, name):
         if self.__dict__.has_key(name):
-            raise self.GroupError, "Can't unbind group (%s)"%name
+            raise self.ConstError, "Can't unbind group (%s)"%name
         raise NameError, name
-
-groups = _const()
-def populate_groups():
-    "populates the available groups in the appropriate namespaces"
-    _available_group_names = ('default', 'family', 'group')
-    _available_groups_with_a_master = ('group', )
+# ____________________________________________________________
+class GroupModule(_const):
+    "emulates a module to manage unique group (OptionDescription) names"
     class GroupName(str):
         """allowed normal group (OptionDescription) names
         *normal* means : groups that are not master
         """
         pass
-
     class MasterGroupName(GroupName):
         """allowed normal group (OptionDescription) names
         *master* means : groups that have the 'master' attribute set
         """
         pass
+# setting.groups (emulates a module)
+groups = GroupModule()
 
-    groups.GroupName = GroupName
-    groups.MasterGroupName = MasterGroupName
+def populate_groups():
+    "populates the available groups in the appropriate namespaces"
+    _available_group_names = ('default', 'family', 'group')
+    _available_groups_with_a_master = ('group', )
     # populates normal or master groups
     for grp in _available_group_names:
         if grp in _available_groups_with_a_master:
-            setattr(groups, grp, MasterGroupName(grp))
+            setattr(groups, grp, groups.MasterGroupName(grp))
         else:
-            setattr(groups, grp, GroupName(grp))
-
+            setattr(groups, grp, groups.GroupName(grp))
+# names are in the module now
 populate_groups()
 # ____________________________________________________________