protobuf/python/repeated.h

// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC.  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 LLC 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.

#ifndef PYUPB_REPEATED_H__
#define PYUPB_REPEATED_H__

#include <stdbool.h>

#include "python/python_api.h"
#include "upb/reflection/def.h"

// Creates a new repeated field stub for field `f` of message object `parent`.
// Precondition: `parent` must be a stub.
PyObject* PyUpb_RepeatedContainer_NewStub(PyObject* parent,
                                          const upb_FieldDef* f,
                                          PyObject* arena);

// Returns a repeated field object wrapping `arr`, of field type `f`, which
// must be on `arena`.  If an existing wrapper object exists, it will be
// returned, otherwise a new object will be created.  The caller always owns a
// ref on the returned value.
PyObject* PyUpb_RepeatedContainer_GetOrCreateWrapper(upb_Array* arr,
                                                     const upb_FieldDef* f,
                                                     PyObject* arena);

// Reifies a repeated field stub to point to the concrete data in `arr`.
// If `arr` is NULL, an appropriate empty array will be constructed.
void PyUpb_RepeatedContainer_Reify(PyObject* self, upb_Array* arr);

// Reifies this repeated object if it is not already reified.
upb_Array* PyUpb_RepeatedContainer_EnsureReified(PyObject* self);

// Implements repeated_field.extend(iterable).  `_self` must be a repeated
// field (either repeated composite or repeated scalar).
PyObject* PyUpb_RepeatedContainer_Extend(PyObject* _self, PyObject* value);

// Implements repeated_field.add(initial_values).  `_self` must be a repeated
// composite field.
PyObject* PyUpb_RepeatedCompositeContainer_Add(PyObject* _self, PyObject* args,
                                               PyObject* kwargs);

// Module-level init.
bool PyUpb_Repeated_Init(PyObject* m);

#endif  // PYUPB_REPEATED_H__