[pypy-svn] r41116 - in pypy/dist/pypy/rpython: lltypesystem test

[pedronis at codespeak.net]

Author: pedronis
Date: Thu Mar 22 19:46:26 2007
New Revision: 41116

Modified:
   pypy/dist/pypy/rpython/lltypesystem/rclass.py
   pypy/dist/pypy/rpython/test/test_rclass.py
Log:
(arigo, pedronis)

let attach immutable hints to classes (this can be used by the timeshifter produced code)



Modified: pypy/dist/pypy/rpython/lltypesystem/rclass.py
==============================================================================
--- pypy/dist/pypy/rpython/lltypesystem/rclass.py	(original)
+++ pypy/dist/pypy/rpython/lltypesystem/rclass.py	Thu Mar 22 19:46:26 2007
@@ -357,6 +357,9 @@
                 adtmeths = {}
             if hints is None:
                 hints = {}
+            if '_immutable_' in self.classdef.classdesc.classdict:
+                hints = hints.copy()
+                hints['immutable'] = True
             object_type = MkStruct(self.classdef.name,
                                    ('super', self.rbase.object_type),
                                    hints=hints,

Modified: pypy/dist/pypy/rpython/test/test_rclass.py
==============================================================================
--- pypy/dist/pypy/rpython/test/test_rclass.py	(original)
+++ pypy/dist/pypy/rpython/test/test_rclass.py	Thu Mar 22 19:46:26 2007
@@ -5,6 +5,7 @@
 from pypy.rpython.ootypesystem import ootype
 from pypy.rlib.rarithmetic import intmask
 from pypy.rpython.test.tool import BaseRtypingTest, LLRtypeMixin, OORtypeMixin
+from pypy.objspace.flow.model import summary
 
 class EmptyBase(object):
     pass
@@ -652,6 +653,21 @@
         assert destrptra is not None
         assert destrptrb is not None
 
+    def test_immutable(self):
+        class I(object):
+            _immutable_ = True
+            
+            def __init__(self, v):
+                self.v = v
+
+        i = I(3)
+        def f():
+            return i.v
+
+        t, typer, graph = self.gengraph(f, [], backendopt=True)
+        assert summary(graph) == {}
+
+
 class TestOOtype(BaseTestRclass, OORtypeMixin):
 
     def test__del__(self):