Squashed 'third_party/protobuf/' content from commit e35e248
Change-Id: I6cbe123d09fe50fdcad0e51466665daeee7433c7
git-subtree-dir: third_party/protobuf
git-subtree-split: e35e24800fb8d694bdeea5fd63dc7d1b14d68723
diff --git a/python/google/protobuf/pyext/extension_dict.cc b/python/google/protobuf/pyext/extension_dict.cc
new file mode 100644
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+++ b/python/google/protobuf/pyext/extension_dict.cc
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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Author: anuraag@google.com (Anuraag Agrawal)
+// Author: tibell@google.com (Johan Tibell)
+
+#include <google/protobuf/pyext/extension_dict.h>
+
+#include <google/protobuf/stubs/logging.h>
+#include <google/protobuf/stubs/common.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/dynamic_message.h>
+#include <google/protobuf/message.h>
+#include <google/protobuf/pyext/descriptor.h>
+#include <google/protobuf/pyext/descriptor_pool.h>
+#include <google/protobuf/pyext/message.h>
+#include <google/protobuf/pyext/repeated_composite_container.h>
+#include <google/protobuf/pyext/repeated_scalar_container.h>
+#include <google/protobuf/pyext/scoped_pyobject_ptr.h>
+#include <google/protobuf/stubs/shared_ptr.h>
+
+namespace google {
+namespace protobuf {
+namespace python {
+
+namespace extension_dict {
+
+PyObject* len(ExtensionDict* self) {
+#if PY_MAJOR_VERSION >= 3
+ return PyLong_FromLong(PyDict_Size(self->values));
+#else
+ return PyInt_FromLong(PyDict_Size(self->values));
+#endif
+}
+
+// TODO(tibell): Use VisitCompositeField.
+int ReleaseExtension(ExtensionDict* self,
+ PyObject* extension,
+ const FieldDescriptor* descriptor) {
+ if (descriptor->label() == FieldDescriptor::LABEL_REPEATED) {
+ if (descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ if (repeated_composite_container::Release(
+ reinterpret_cast<RepeatedCompositeContainer*>(
+ extension)) < 0) {
+ return -1;
+ }
+ } else {
+ if (repeated_scalar_container::Release(
+ reinterpret_cast<RepeatedScalarContainer*>(
+ extension)) < 0) {
+ return -1;
+ }
+ }
+ } else if (descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ if (cmessage::ReleaseSubMessage(
+ self->parent, descriptor,
+ reinterpret_cast<CMessage*>(extension)) < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+PyObject* subscript(ExtensionDict* self, PyObject* key) {
+ const FieldDescriptor* descriptor = cmessage::GetExtensionDescriptor(key);
+ if (descriptor == NULL) {
+ return NULL;
+ }
+ if (!CheckFieldBelongsToMessage(descriptor, self->message)) {
+ return NULL;
+ }
+
+ if (descriptor->label() != FieldDescriptor::LABEL_REPEATED &&
+ descriptor->cpp_type() != FieldDescriptor::CPPTYPE_MESSAGE) {
+ return cmessage::InternalGetScalar(self->message, descriptor);
+ }
+
+ PyObject* value = PyDict_GetItem(self->values, key);
+ if (value != NULL) {
+ Py_INCREF(value);
+ return value;
+ }
+
+ if (self->parent == NULL) {
+ // We are in "detached" state. Don't allow further modifications.
+ // TODO(amauryfa): Support adding non-scalars to a detached extension dict.
+ // This probably requires to store the type of the main message.
+ PyErr_SetObject(PyExc_KeyError, key);
+ return NULL;
+ }
+
+ if (descriptor->label() != FieldDescriptor::LABEL_REPEATED &&
+ descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ PyObject* sub_message = cmessage::InternalGetSubMessage(
+ self->parent, descriptor);
+ if (sub_message == NULL) {
+ return NULL;
+ }
+ PyDict_SetItem(self->values, key, sub_message);
+ return sub_message;
+ }
+
+ if (descriptor->label() == FieldDescriptor::LABEL_REPEATED) {
+ if (descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ PyObject *message_class = cdescriptor_pool::GetMessageClass(
+ cmessage::GetDescriptorPoolForMessage(self->parent),
+ descriptor->message_type());
+ if (message_class == NULL) {
+ return NULL;
+ }
+ PyObject* py_container = repeated_composite_container::NewContainer(
+ self->parent, descriptor, message_class);
+ if (py_container == NULL) {
+ return NULL;
+ }
+ PyDict_SetItem(self->values, key, py_container);
+ return py_container;
+ } else {
+ PyObject* py_container = repeated_scalar_container::NewContainer(
+ self->parent, descriptor);
+ if (py_container == NULL) {
+ return NULL;
+ }
+ PyDict_SetItem(self->values, key, py_container);
+ return py_container;
+ }
+ }
+ PyErr_SetString(PyExc_ValueError, "control reached unexpected line");
+ return NULL;
+}
+
+int ass_subscript(ExtensionDict* self, PyObject* key, PyObject* value) {
+ const FieldDescriptor* descriptor = cmessage::GetExtensionDescriptor(key);
+ if (descriptor == NULL) {
+ return -1;
+ }
+ if (!CheckFieldBelongsToMessage(descriptor, self->message)) {
+ return -1;
+ }
+
+ if (descriptor->label() != FieldDescriptor::LABEL_OPTIONAL ||
+ descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
+ PyErr_SetString(PyExc_TypeError, "Extension is repeated and/or composite "
+ "type");
+ return -1;
+ }
+ if (self->parent) {
+ cmessage::AssureWritable(self->parent);
+ if (cmessage::InternalSetScalar(self->parent, descriptor, value) < 0) {
+ return -1;
+ }
+ }
+ // TODO(tibell): We shouldn't write scalars to the cache.
+ PyDict_SetItem(self->values, key, value);
+ return 0;
+}
+
+PyObject* ClearExtension(ExtensionDict* self, PyObject* extension) {
+ const FieldDescriptor* descriptor =
+ cmessage::GetExtensionDescriptor(extension);
+ if (descriptor == NULL) {
+ return NULL;
+ }
+ PyObject* value = PyDict_GetItem(self->values, extension);
+ if (self->parent) {
+ if (value != NULL) {
+ if (ReleaseExtension(self, value, descriptor) < 0) {
+ return NULL;
+ }
+ }
+ if (ScopedPyObjectPtr(cmessage::ClearFieldByDescriptor(
+ self->parent, descriptor)) == NULL) {
+ return NULL;
+ }
+ }
+ if (PyDict_DelItem(self->values, extension) < 0) {
+ PyErr_Clear();
+ }
+ Py_RETURN_NONE;
+}
+
+PyObject* HasExtension(ExtensionDict* self, PyObject* extension) {
+ const FieldDescriptor* descriptor =
+ cmessage::GetExtensionDescriptor(extension);
+ if (descriptor == NULL) {
+ return NULL;
+ }
+ if (self->parent) {
+ return cmessage::HasFieldByDescriptor(self->parent, descriptor);
+ } else {
+ int exists = PyDict_Contains(self->values, extension);
+ if (exists < 0) {
+ return NULL;
+ }
+ return PyBool_FromLong(exists);
+ }
+}
+
+PyObject* _FindExtensionByName(ExtensionDict* self, PyObject* name) {
+ ScopedPyObjectPtr extensions_by_name(PyObject_GetAttrString(
+ reinterpret_cast<PyObject*>(self->parent), "_extensions_by_name"));
+ if (extensions_by_name == NULL) {
+ return NULL;
+ }
+ PyObject* result = PyDict_GetItem(extensions_by_name.get(), name);
+ if (result == NULL) {
+ Py_RETURN_NONE;
+ } else {
+ Py_INCREF(result);
+ return result;
+ }
+}
+
+ExtensionDict* NewExtensionDict(CMessage *parent) {
+ ExtensionDict* self = reinterpret_cast<ExtensionDict*>(
+ PyType_GenericAlloc(&ExtensionDict_Type, 0));
+ if (self == NULL) {
+ return NULL;
+ }
+
+ self->parent = parent; // Store a borrowed reference.
+ self->message = parent->message;
+ self->owner = parent->owner;
+ self->values = PyDict_New();
+ return self;
+}
+
+void dealloc(ExtensionDict* self) {
+ Py_CLEAR(self->values);
+ self->owner.reset();
+ Py_TYPE(self)->tp_free(reinterpret_cast<PyObject*>(self));
+}
+
+static PyMappingMethods MpMethods = {
+ (lenfunc)len, /* mp_length */
+ (binaryfunc)subscript, /* mp_subscript */
+ (objobjargproc)ass_subscript,/* mp_ass_subscript */
+};
+
+#define EDMETHOD(name, args, doc) { #name, (PyCFunction)name, args, doc }
+static PyMethodDef Methods[] = {
+ EDMETHOD(ClearExtension, METH_O, "Clears an extension from the object."),
+ EDMETHOD(HasExtension, METH_O, "Checks if the object has an extension."),
+ EDMETHOD(_FindExtensionByName, METH_O,
+ "Finds an extension by name."),
+ { NULL, NULL }
+};
+
+} // namespace extension_dict
+
+PyTypeObject ExtensionDict_Type = {
+ PyVarObject_HEAD_INIT(&PyType_Type, 0)
+ FULL_MODULE_NAME ".ExtensionDict", // tp_name
+ sizeof(ExtensionDict), // tp_basicsize
+ 0, // tp_itemsize
+ (destructor)extension_dict::dealloc, // tp_dealloc
+ 0, // tp_print
+ 0, // tp_getattr
+ 0, // tp_setattr
+ 0, // tp_compare
+ 0, // tp_repr
+ 0, // tp_as_number
+ 0, // tp_as_sequence
+ &extension_dict::MpMethods, // tp_as_mapping
+ PyObject_HashNotImplemented, // tp_hash
+ 0, // tp_call
+ 0, // tp_str
+ 0, // tp_getattro
+ 0, // tp_setattro
+ 0, // tp_as_buffer
+ Py_TPFLAGS_DEFAULT, // tp_flags
+ "An extension dict", // tp_doc
+ 0, // tp_traverse
+ 0, // tp_clear
+ 0, // tp_richcompare
+ 0, // tp_weaklistoffset
+ 0, // tp_iter
+ 0, // tp_iternext
+ extension_dict::Methods, // tp_methods
+ 0, // tp_members
+ 0, // tp_getset
+ 0, // tp_base
+ 0, // tp_dict
+ 0, // tp_descr_get
+ 0, // tp_descr_set
+ 0, // tp_dictoffset
+ 0, // tp_init
+};
+
+} // namespace python
+} // namespace protobuf
+} // namespace google