[pypy-svn] r4819 - pypy/trunk/src/goal

[hpk at codespeak.net]

Author: hpk
Date: Wed Jun  2 14:08:16 2004
New Revision: 4819

Added:
   pypy/trunk/src/goal/objectspace-reconstruct.py
Log:
some draft ideas how the object type system and objectspace/interpreter 
interactions might work 


Added: pypy/trunk/src/goal/objectspace-reconstruct.py
==============================================================================
--- (empty file)
+++ pypy/trunk/src/goal/objectspace-reconstruct.py	Wed Jun  2 14:08:16 2004
@@ -0,0 +1,40 @@
+
+def __getattribute__(w_obj,w_name):
+  type = space.gettype(w_obj)
+  name = space.unwrap(w_name)
+  w_descr = type.lookup(name)
+  if w_descr is not None:
+     if space.is_data_descr(w_descr):
+         return space.get(w_descr,w_obj,space.wrap(type))
+  w_dict = space.getdict(w_obj)
+  if w_dict is not None:
+     try:
+       return space.getitem(w_dict,w_name)
+     except OperationError, e:
+       if not e.match(space,space.w_KeyError):
+         raise
+  if w_descr is not None:
+     return space.get(w_descr,w_obj,space.wrap(type))
+  raise OperationError(space.w_AttributeError,w_name)
+
+def space.getattr(w_obj,w_name):
+   type = space.gettype(w_obj)
+   w_descr = type.lookup('__getattribute__')
+   w_impl = space.get(w_descr,w_obj, space.wrap(type))
+   try:
+     return space.call_function(w_impl, w_name)
+   except: # AttributeError
+     w_descr = type.lookup('__getattr__')
+     if w_descr is None:
+       raise
+     w_impl = space.get(w_descr,w_obj, space.wrap(type))
+     return space.call_function(w_descr,w_obj, space.wrap(type))
+
+def space.get(w_obj,w_name):
+   type = space.gettype(w_obj)
+   w_descr = type.lookup('__get__')
+   if w_descr is not None:
+     w_impl = space.get(w_descr,w_obj, space.wrap(type))
+     return space.call_function(w_impl, w_name)
+   else:
+     return w_obj