Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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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/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/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 {
extern google::protobuf::DynamicMessageFactory* global_message_factory;
namespace extension_dict {
// TODO(tibell): Always use self->message for clarity, just like in
// RepeatedCompositeContainer.
static google::protobuf::Message* GetMessage(ExtensionDict* self) {
if (self->parent != NULL) {
return self->parent->message;
} else {
return self->message;
}
}
CFieldDescriptor* InternalGetCDescriptorFromExtension(PyObject* extension) {
PyObject* cdescriptor = PyObject_GetAttrString(extension, "_cdescriptor");
if (cdescriptor == NULL) {
PyErr_SetString(PyExc_KeyError, "Unregistered extension.");
return NULL;
}
if (!PyObject_TypeCheck(cdescriptor, &CFieldDescriptor_Type)) {
PyErr_SetString(PyExc_TypeError, "Not a CFieldDescriptor");
Py_DECREF(cdescriptor);
return NULL;
}
CFieldDescriptor* descriptor =
reinterpret_cast<CFieldDescriptor*>(cdescriptor);
return descriptor;
}
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 google::protobuf::FieldDescriptor* descriptor) {
if (descriptor->label() == google::protobuf::FieldDescriptor::LABEL_REPEATED) {
if (descriptor->cpp_type() ==
google::protobuf::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() ==
google::protobuf::FieldDescriptor::CPPTYPE_MESSAGE) {
if (cmessage::ReleaseSubMessage(
GetMessage(self), descriptor,
reinterpret_cast<CMessage*>(extension)) < 0) {
return -1;
}
}
return 0;
}
PyObject* subscript(ExtensionDict* self, PyObject* key) {
CFieldDescriptor* cdescriptor = InternalGetCDescriptorFromExtension(
key);
if (cdescriptor == NULL) {
return NULL;
}
ScopedPyObjectPtr py_cdescriptor(reinterpret_cast<PyObject*>(cdescriptor));
const google::protobuf::FieldDescriptor* descriptor = cdescriptor->descriptor;
if (descriptor == NULL) {
return NULL;
}
if (descriptor->label() != FieldDescriptor::LABEL_REPEATED &&
descriptor->cpp_type() != FieldDescriptor::CPPTYPE_MESSAGE) {
return cmessage::InternalGetScalar(self->parent, descriptor);
}
PyObject* value = PyDict_GetItem(self->values, key);
if (value != NULL) {
Py_INCREF(value);
return value;
}
if (descriptor->label() != FieldDescriptor::LABEL_REPEATED &&
descriptor->cpp_type() == FieldDescriptor::CPPTYPE_MESSAGE) {
PyObject* sub_message = cmessage::InternalGetSubMessage(
self->parent, cdescriptor);
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) {
// COPIED
PyObject* py_container = PyObject_CallObject(
reinterpret_cast<PyObject*>(&RepeatedCompositeContainer_Type),
NULL);
if (py_container == NULL) {
return NULL;
}
RepeatedCompositeContainer* container =
reinterpret_cast<RepeatedCompositeContainer*>(py_container);
PyObject* field = cdescriptor->descriptor_field;
PyObject* message_type = PyObject_GetAttrString(field, "message_type");
PyObject* concrete_class = PyObject_GetAttrString(message_type,
"_concrete_class");
container->owner = self->owner;
container->parent = self->parent;
container->message = self->parent->message;
container->parent_field = cdescriptor;
container->subclass_init = concrete_class;
Py_DECREF(message_type);
PyDict_SetItem(self->values, key, py_container);
return py_container;
} else {
// COPIED
ScopedPyObjectPtr init_args(PyTuple_Pack(2, self->parent, cdescriptor));
PyObject* py_container = PyObject_CallObject(
reinterpret_cast<PyObject*>(&RepeatedScalarContainer_Type),
init_args);
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) {
CFieldDescriptor* cdescriptor = InternalGetCDescriptorFromExtension(
key);
if (cdescriptor == NULL) {
return -1;
}
ScopedPyObjectPtr py_cdescriptor(reinterpret_cast<PyObject*>(cdescriptor));
const google::protobuf::FieldDescriptor* descriptor = cdescriptor->descriptor;
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;
}
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) {
CFieldDescriptor* cdescriptor = InternalGetCDescriptorFromExtension(
extension);
if (cdescriptor == NULL) {
return NULL;
}
ScopedPyObjectPtr py_cdescriptor(reinterpret_cast<PyObject*>(cdescriptor));
PyObject* value = PyDict_GetItem(self->values, extension);
if (value != NULL) {
if (ReleaseExtension(self, value, cdescriptor->descriptor) < 0) {
return NULL;
}
}
if (cmessage::ClearFieldByDescriptor(self->parent,
cdescriptor->descriptor) == NULL) {
return NULL;
}
if (PyDict_DelItem(self->values, extension) < 0) {
PyErr_Clear();
}
Py_RETURN_NONE;
}
PyObject* HasExtension(ExtensionDict* self, PyObject* extension) {
CFieldDescriptor* cdescriptor = InternalGetCDescriptorFromExtension(
extension);
if (cdescriptor == NULL) {
return NULL;
}
ScopedPyObjectPtr py_cdescriptor(reinterpret_cast<PyObject*>(cdescriptor));
PyObject* result = cmessage::HasFieldByDescriptor(
self->parent, cdescriptor->descriptor);
return result;
}
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, name);
if (result == NULL) {
Py_RETURN_NONE;
} else {
Py_INCREF(result);
return result;
}
}
int init(ExtensionDict* self, PyObject* args, PyObject* kwargs) {
self->parent = NULL;
self->message = NULL;
self->values = PyDict_New();
return 0;
}
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)
"google.protobuf.internal."
"cpp._message.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
0, // 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
(initproc)extension_dict::init, // tp_init
};
} // namespace python
} // namespace protobuf
} // namespace google