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# Protocol Buffers - Google's data interchange format
# Copyright 2008 Google Inc. 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
"""Builds descriptors, message classes and services for generated _pb2.py.
This file is only called in python generated _pb2.py files. It builds
descriptors, message classes and services that users can directly use
in generated code.
"""
__author__ = '[email protected] (Jie Luo)'
from google.protobuf.internal import enum_type_wrapper
from google.protobuf.internal import python_message
from google.protobuf import message as _message
from google.protobuf import reflection as _reflection
from google.protobuf import symbol_database as _symbol_database
_sym_db = _symbol_database.Default()
def BuildMessageAndEnumDescriptors(file_des, module):
"""Builds message and enum descriptors.
Args:
file_des: FileDescriptor of the .proto file
module: Generated _pb2 module
"""
def BuildNestedDescriptors(msg_des, prefix):
for (name, nested_msg) in msg_des.nested_types_by_name.items():
module_name = prefix + name.upper()
module[module_name] = nested_msg
BuildNestedDescriptors(nested_msg, module_name + '_')
for enum_des in msg_des.enum_types:
module[prefix + enum_des.name.upper()] = enum_des
for (name, msg_des) in file_des.message_types_by_name.items():
module_name = '_' + name.upper()
module[module_name] = msg_des
BuildNestedDescriptors(msg_des, module_name + '_')
def BuildTopDescriptorsAndMessages(file_des, module_name, module):
"""Builds top level descriptors and message classes.
Args:
file_des: FileDescriptor of the .proto file
module_name: str, the name of generated _pb2 module
module: Generated _pb2 module
"""
def BuildMessage(msg_des):
create_dict = {}
for (name, nested_msg) in msg_des.nested_types_by_name.items():
create_dict[name] = BuildMessage(nested_msg)
create_dict['DESCRIPTOR'] = msg_des
create_dict['__module__'] = module_name
message_class = _reflection.GeneratedProtocolMessageType(
msg_des.name, (_message.Message,), create_dict)
_sym_db.RegisterMessage(message_class)
return message_class
# top level enums
for (name, enum_des) in file_des.enum_types_by_name.items():
module['_' + name.upper()] = enum_des
module[name] = enum_type_wrapper.EnumTypeWrapper(enum_des)
for enum_value in enum_des.values:
module[enum_value.name] = enum_value.number
# top level extensions
for (name, extension_des) in file_des.extensions_by_name.items():
module[name.upper() + '_FIELD_NUMBER'] = extension_des.number
module[name] = extension_des
# services
for (name, service) in file_des.services_by_name.items():
module['_' + name.upper()] = service
# Build messages.
for (name, msg_des) in file_des.message_types_by_name.items():
module[name] = BuildMessage(msg_des)
def AddHelpersToExtensions(file_des):
"""no-op to keep old generated code work with new runtime.
Args:
file_des: FileDescriptor of the .proto file
"""
# TODO: Remove this on-op
return
def BuildServices(file_des, module_name, module):
"""Builds services classes and services stub class.
Args:
file_des: FileDescriptor of the .proto file
module_name: str, the name of generated _pb2 module
module: Generated _pb2 module
"""
# pylint: disable=g-import-not-at-top
from google.protobuf import service_reflection
# pylint: enable=g-import-not-at-top
for (name, service) in file_des.services_by_name.items():
module[name] = service_reflection.GeneratedServiceType(
name, (),
dict(DESCRIPTOR=service, __module__=module_name))
stub_name = name + '_Stub'
module[stub_name] = service_reflection.GeneratedServiceStubType(
stub_name, (module[name],),
dict(DESCRIPTOR=service, __module__=module_name))
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