[pypy-svn] r68272 - in pypy/trunk/pypy/rlib: . test

[antocuni at codespeak.net]

Author: antocuni
Date: Fri Oct  9 14:58:12 2009
New Revision: 68272

Modified:
   pypy/trunk/pypy/rlib/nonconst.py
   pypy/trunk/pypy/rlib/test/test_nonconst.py
Log:
make sure we can use the idiom "if NonConstant(False): ..." to make the
annotator seeing some code without executing it



Modified: pypy/trunk/pypy/rlib/nonconst.py
==============================================================================
--- pypy/trunk/pypy/rlib/nonconst.py	(original)
+++ pypy/trunk/pypy/rlib/nonconst.py	Fri Oct  9 14:58:12 2009
@@ -17,6 +17,9 @@
     def __setattr__(self, attr, value):
         setattr(self.__dict__['constant'], attr, value)
 
+    def __nonzero__(self):
+        return bool(self.__dict__['constant'])
+
 class EntryNonConstant(ExtRegistryEntry):
     _about_ = NonConstant
     

Modified: pypy/trunk/pypy/rlib/test/test_nonconst.py
==============================================================================
--- pypy/trunk/pypy/rlib/test/test_nonconst.py	(original)
+++ pypy/trunk/pypy/rlib/test/test_nonconst.py	Fri Oct  9 14:58:12 2009
@@ -47,3 +47,15 @@
     if option.view:
         a.translator.view()
     assert isinstance(s, SomeInstance)
+
+def test_bool_nonconst():
+    def fn():
+        return bool(NonConstant(False))
+    
+    assert not fn()
+    
+    a = RPythonAnnotator()
+    s = a.build_types(fn, [])
+    assert s.knowntype is bool
+    assert not hasattr(s, 'const')
+