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// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#ifndef PYPB_MESSAGE_H__
#define PYPB_MESSAGE_H__
#include <stdbool.h>
#include "python/protobuf.h"
#include "upb/reflection/message.h"
// Removes the wrapper object for this field from the unset subobject cache.
void PyUpb_Message_CacheDelete(PyObject* _self, const upb_FieldDef* f);
// Sets the field value for `f` to `subobj`, evicting the wrapper object from
// the "unset subobject" cache now that real data exists for it. The caller
// must also update the wrapper associated with `f` to point to `subobj` also.
void PyUpb_Message_SetConcreteSubobj(PyObject* _self, const upb_FieldDef* f,
upb_MessageValue subobj);
// Gets a Python wrapper object for message `u_msg` of type `m`, returning a
// cached wrapper if one was previously created. If a new object is created,
// it will reference `arena`, which must own `u_msg`.
PyObject* PyUpb_Message_Get(upb_Message* u_msg, const upb_MessageDef* m,
PyObject* arena);
// Verifies that a Python object is a message. Sets a TypeError exception and
// returns false on failure.
bool PyUpb_Message_Verify(PyObject* self);
// Gets the upb_Message* for this message object if the message is reified.
// Otherwise returns NULL.
upb_Message* PyUpb_Message_GetIfReified(PyObject* _self);
// Returns the `upb_MessageDef` for a given Message.
const upb_MessageDef* PyUpb_Message_GetMsgdef(PyObject* self);
// Functions that match the corresponding methods on the message object.
PyObject* PyUpb_Message_MergeFrom(PyObject* self, PyObject* arg);
PyObject* PyUpb_Message_MergeFromString(PyObject* self, PyObject* arg);
PyObject* PyUpb_Message_SerializeToString(PyObject* self, PyObject* args,
PyObject* kwargs);
PyObject* PyUpb_Message_SerializePartialToString(PyObject* self, PyObject* args,
PyObject* kwargs);
// Sets fields of the message according to the attribuges in `kwargs`.
int PyUpb_Message_InitAttributes(PyObject* _self, PyObject* args,
PyObject* kwargs);
// Checks that `key` is a field descriptor for an extension type, and that the
// extendee is this message. Otherwise returns NULL and sets a KeyError.
const upb_FieldDef* PyUpb_Message_GetExtensionDef(PyObject* _self,
PyObject* key);
// Clears the given field in this message.
void PyUpb_Message_DoClearField(PyObject* _self, const upb_FieldDef* f);
// Clears the ExtensionDict from the message. The message must have an
// ExtensionDict set.
void PyUpb_Message_ClearExtensionDict(PyObject* _self);
// Implements the equivalent of getattr(msg, field), once `field` has
// already been resolved to a `upb_FieldDef*`.
PyObject* PyUpb_Message_GetFieldValue(PyObject* _self,
const upb_FieldDef* field);
// Implements the equivalent of setattr(msg, field, value), once `field` has
// already been resolved to a `upb_FieldDef*`.
int PyUpb_Message_SetFieldValue(PyObject* _self, const upb_FieldDef* field,
PyObject* value, PyObject* exc);
// Creates message meta class.
PyObject* PyUpb_MessageMeta_DoCreateClass(PyObject* py_descriptor,
const char* name, PyObject* dict);
// Returns the version associated with this message. The version will be
// incremented when the message changes.
int PyUpb_Message_GetVersion(PyObject* _self);
// Module-level init.
bool PyUpb_InitMessage(PyObject* m);
#endif // PYPB_MESSAGE_H__
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