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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2009-2020 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 BSON
# Represents a $maxKey type, which compares less than any other value in the
# specification.
#
# @see http://bsonspec.org/#/specification
#
# @since 2.0.0
class MaxKey
include Comparable
include JSON
include Specialized
# A $maxKey is type 0x7F in the BSON spec.
#
# @since 2.0.0
BSON_TYPE = ::String.new(127.chr, encoding: BINARY).freeze
# Constant for always evaluating greater in a comparison.
#
# @since 2.0.0
GREATER = 1
# When comparing a max key with any other object, the max key will always
# be greater.
#
# @example Compare with another object.
# max_key <=> 1000
#
# @param [ Object ] other The object to compare against.
#
# @return [ Integer ] Always 1.
#
# @since 2.0.0
def <=>(other)
GREATER
end
# Return a representation of the object for use in
# application-level JSON serialization. Since BSON::MaxKey
# is used exclusively in BSON-related contexts, this
# method returns the canonical Extended JSON representation.
#
# @return [ Hash ] The extended json representation.
def as_json(*_args)
as_extended_json
end
# Converts this object to a representation directly serializable to
# Extended JSON (https://github.com/mongodb/specifications/blob/master/source/extended-json/extended-json.md).
#
# @option opts [ nil | :relaxed | :legacy ] :mode Serialization mode
# (default is canonical extended JSON)
#
# @return [ Hash ] The extended json representation.
def as_extended_json(**options)
{ "$maxKey" => 1 }
end
# Register this type when the module is loaded.
#
# @since 2.0.0
Registry.register(BSON_TYPE, self)
end
end
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