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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2014-2022 MongoDB Inc.
#
# 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.
module Mongo
module Protocol
# A Hash that caches the results of #to_bson.
#
# @api private
class CachingHash
def initialize(hash)
@hash = hash
end
def bson_type
Hash::BSON_TYPE
end
# Caches the result of to_bson and writes it to the given buffer on subsequent
# calls to this method. If this method is originally called without validation,
# and then is subsequently called with validation, we will want to recalculate
# the to_bson to trigger the validations.
#
# @param [ BSON::ByteBuffer ] buffer The encoded BSON buffer to append to.
# @param [ true, false ] validating_keys Whether keys should be validated when serializing.
# This option is deprecated and will not be used. It will removed in version 3.0.
#
# @return [ BSON::ByteBuffer ] The buffer with the encoded object.
def to_bson(buffer = BSON::ByteBuffer.new, validating_keys = nil)
if !@bytes
@bytes = @hash.to_bson(BSON::ByteBuffer.new).to_s
end
buffer.put_bytes(@bytes)
end
end
end
end
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