# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1351443690 -3600
# Node ID af8a6a38eeede11a33768be0c1b97b6814f4a99e
# Parent  1f315a42de7983a7ceb11a1b557bfc15c2d2d414
Introduced an underlying Namespace class in order to support a convenience
method providing static attribute details.

diff -r 1f315a42de79 -r af8a6a38eeed micropython/basicdata.py
--- a/micropython/basicdata.py	Mon Oct 22 00:11:06 2012 +0200
+++ b/micropython/basicdata.py	Sun Oct 28 18:01:30 2012 +0100
@@ -39,10 +39,29 @@
         else:
             return self.parent.full_name()
 
+class Namespace:
+
+    "A mix-in providing basic namespace functionality."
+
+    def get_static_attribute(self, name):
+
+        """
+        Return a static attribute for the given 'name' or None if no such
+        attribute exists.
+        """
+
+        return None
+
+class Constant:
+
+    "A superclass for all constant or context-free structures."
+
+    pass
+
 # Instances are special in that they need to be wrapped together with context in
 # a running program, but they are not generally constant.
 
-class Instance:
+class Instance(Namespace):
 
     "A placeholder indicating the involvement of an instance."
 
@@ -74,12 +93,6 @@
 def make_instance():
     return common_instance
 
-class Constant:
-
-    "A superclass for all constant or context-free structures."
-
-    pass
-
 # Data objects appearing in programs before run-time.
 
 class Const(Constant, Instance):
diff -r 1f315a42de79 -r af8a6a38eeed micropython/data.py
--- a/micropython/data.py	Mon Oct 22 00:11:06 2012 +0200
+++ b/micropython/data.py	Sun Oct 28 18:01:30 2012 +0100
@@ -65,7 +65,7 @@
 except NameError:
     from sets import Set as set
 
-class NamespaceDict:
+class NamespaceDict(Namespace):
 
     "A mix-in providing dictionary methods."
 
@@ -1656,6 +1656,15 @@
                 self.allattr[name] = attr
         return self.allattr
 
+    def get_static_attribute(self, name):
+
+        """
+        Return a static attribute for the given 'name' or None if no such
+        attribute exists.
+        """
+
+        return self.all_class_attributes().get(name)
+
 class TypeClass(Class):
 
     "A special class for the type class."
@@ -2080,6 +2089,15 @@
 
         return dict(self)
 
+    def get_static_attribute(self, name):
+
+        """
+        Return a static attribute for the given 'name' or None if no such
+        attribute exists.
+        """
+
+        return self.get(name)
+
     def modify_name(self, name):
 
         """