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author | S. Solomon Darnell | 2025-03-28 21:52:21 -0500 |
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committer | S. Solomon Darnell | 2025-03-28 21:52:21 -0500 |
commit | 4a52a71956a8d46fcb7294ac71734504bb09bcc2 (patch) | |
tree | ee3dc5af3b6313e921cd920906356f5d4febc4ed /.venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py | |
parent | cc961e04ba734dd72309fb548a2f97d67d578813 (diff) | |
download | gn-ai-master.tar.gz |
Diffstat (limited to '.venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py')
-rw-r--r-- | .venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py b/.venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py new file mode 100644 index 00000000..803d0040 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/google/protobuf/proto_builder.py @@ -0,0 +1,111 @@ +# 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 + +"""Dynamic Protobuf class creator.""" + +from collections import OrderedDict +import hashlib +import os + +from google.protobuf import descriptor_pb2 +from google.protobuf import descriptor +from google.protobuf import descriptor_pool +from google.protobuf import message_factory + + +def _GetMessageFromFactory(pool, full_name): + """Get a proto class from the MessageFactory by name. + + Args: + pool: a descriptor pool. + full_name: str, the fully qualified name of the proto type. + Returns: + A class, for the type identified by full_name. + Raises: + KeyError, if the proto is not found in the factory's descriptor pool. + """ + proto_descriptor = pool.FindMessageTypeByName(full_name) + proto_cls = message_factory.GetMessageClass(proto_descriptor) + return proto_cls + + +def MakeSimpleProtoClass(fields, full_name=None, pool=None): + """Create a Protobuf class whose fields are basic types. + + Note: this doesn't validate field names! + + Args: + fields: dict of {name: field_type} mappings for each field in the proto. If + this is an OrderedDict the order will be maintained, otherwise the + fields will be sorted by name. + full_name: optional str, the fully-qualified name of the proto type. + pool: optional DescriptorPool instance. + Returns: + a class, the new protobuf class with a FileDescriptor. + """ + pool_instance = pool or descriptor_pool.DescriptorPool() + if full_name is not None: + try: + proto_cls = _GetMessageFromFactory(pool_instance, full_name) + return proto_cls + except KeyError: + # The factory's DescriptorPool doesn't know about this class yet. + pass + + # Get a list of (name, field_type) tuples from the fields dict. If fields was + # an OrderedDict we keep the order, but otherwise we sort the field to ensure + # consistent ordering. + field_items = fields.items() + if not isinstance(fields, OrderedDict): + field_items = sorted(field_items) + + # Use a consistent file name that is unlikely to conflict with any imported + # proto files. + fields_hash = hashlib.sha1() + for f_name, f_type in field_items: + fields_hash.update(f_name.encode('utf-8')) + fields_hash.update(str(f_type).encode('utf-8')) + proto_file_name = fields_hash.hexdigest() + '.proto' + + # If the proto is anonymous, use the same hash to name it. + if full_name is None: + full_name = ('net.proto2.python.public.proto_builder.AnonymousProto_' + + fields_hash.hexdigest()) + try: + proto_cls = _GetMessageFromFactory(pool_instance, full_name) + return proto_cls + except KeyError: + # The factory's DescriptorPool doesn't know about this class yet. + pass + + # This is the first time we see this proto: add a new descriptor to the pool. + pool_instance.Add( + _MakeFileDescriptorProto(proto_file_name, full_name, field_items)) + return _GetMessageFromFactory(pool_instance, full_name) + + +def _MakeFileDescriptorProto(proto_file_name, full_name, field_items): + """Populate FileDescriptorProto for MessageFactory's DescriptorPool.""" + package, name = full_name.rsplit('.', 1) + file_proto = descriptor_pb2.FileDescriptorProto() + file_proto.name = os.path.join(package.replace('.', '/'), proto_file_name) + file_proto.package = package + desc_proto = file_proto.message_type.add() + desc_proto.name = name + for f_number, (f_name, f_type) in enumerate(field_items, 1): + field_proto = desc_proto.field.add() + field_proto.name = f_name + # # If the number falls in the reserved range, reassign it to the correct + # # number after the range. + if f_number >= descriptor.FieldDescriptor.FIRST_RESERVED_FIELD_NUMBER: + f_number += ( + descriptor.FieldDescriptor.LAST_RESERVED_FIELD_NUMBER - + descriptor.FieldDescriptor.FIRST_RESERVED_FIELD_NUMBER + 1) + field_proto.number = f_number + field_proto.label = descriptor_pb2.FieldDescriptorProto.LABEL_OPTIONAL + field_proto.type = f_type + return file_proto |