Author: Amaury Forgeot d'Arc <[email protected]>
Branch:
Changeset: r52528:94882d5e1677
Date: 2012-02-15 22:06 +0100
http://bitbucket.org/pypy/pypy/changeset/94882d5e1677/
Log: cpyext: Implement PyDictProxy_New(), as a read-only dict. I don't
know if there is a better way; PyPy does not have a separate type
for int.__dict__.
diff --git a/pypy/module/cpyext/dictobject.py b/pypy/module/cpyext/dictobject.py
--- a/pypy/module/cpyext/dictobject.py
+++ b/pypy/module/cpyext/dictobject.py
@@ -6,6 +6,7 @@
from pypy.module.cpyext.pyobject import RefcountState
from pypy.module.cpyext.pyerrors import PyErr_BadInternalCall
from pypy.interpreter.error import OperationError
+from pypy.rlib.objectmodel import specialize
@cpython_api([], PyObject)
def PyDict_New(space):
@@ -191,3 +192,24 @@
raise
return 0
return 1
+
[email protected]()
+def make_frozendict(space):
+ return space.appexec([], '''():
+ import collections
+ class FrozenDict(collections.Mapping):
+ def __init__(self, *args, **kwargs):
+ self._d = dict(*args, **kwargs)
+ def __iter__(self):
+ return iter(self._d)
+ def __len__(self):
+ return len(self._d)
+ def __getitem__(self, key):
+ return self._d[key]
+ return FrozenDict''')
+
+@cpython_api([PyObject], PyObject)
+def PyDictProxy_New(space, w_dict):
+ w_frozendict = make_frozendict(space)
+ return space.call_function(w_frozendict, w_dict)
+
diff --git a/pypy/module/cpyext/test/test_dictobject.py
b/pypy/module/cpyext/test/test_dictobject.py
--- a/pypy/module/cpyext/test/test_dictobject.py
+++ b/pypy/module/cpyext/test/test_dictobject.py
@@ -2,6 +2,7 @@
from pypy.module.cpyext.test.test_api import BaseApiTest
from pypy.module.cpyext.api import Py_ssize_tP, PyObjectP
from pypy.module.cpyext.pyobject import make_ref, from_ref
+from pypy.interpreter.error import OperationError
class TestDictObject(BaseApiTest):
def test_dict(self, space, api):
@@ -110,3 +111,13 @@
assert space.eq_w(space.len(w_copy), space.len(w_dict))
assert space.eq_w(w_copy, w_dict)
+
+ def test_dictproxy(self, space, api):
+ w_dict = space.sys.get('modules')
+ w_proxy = api.PyDictProxy_New(w_dict)
+ assert space.is_true(space.contains(w_proxy, space.wrap('sys')))
+ raises(OperationError, space.setitem,
+ w_proxy, space.wrap('sys'), space.w_None)
+ raises(OperationError, space.delitem,
+ w_proxy, space.wrap('sys'))
+ raises(OperationError, space.call_method, w_proxy, 'clear')
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