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# Copyright (C) 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from proto.primitives import ProtoType
class StringyNumberRule:
"""A marshal between certain numeric types and strings
This is a necessary hack to allow round trip conversion
from messages to dicts back to messages.
See https://github.com/protocolbuffers/protobuf/issues/2679
and
https://developers.google.com/protocol-buffers/docs/proto3#json
for more details.
"""
def to_python(self, value, *, absent: bool = None):
return value
def to_proto(self, value):
if value is not None:
return self._python_type(value)
return None
class Int64Rule(StringyNumberRule):
_python_type = int
_proto_type = ProtoType.INT64
class UInt64Rule(StringyNumberRule):
_python_type = int
_proto_type = ProtoType.UINT64
class SInt64Rule(StringyNumberRule):
_python_type = int
_proto_type = ProtoType.SINT64
class Fixed64Rule(StringyNumberRule):
_python_type = int
_proto_type = ProtoType.FIXED64
class SFixed64Rule(StringyNumberRule):
_python_type = int
_proto_type = ProtoType.SFIXED64
STRINGY_NUMBER_RULES = [
Int64Rule,
UInt64Rule,
SInt64Rule,
Fixed64Rule,
SFixed64Rule,
]
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