# frozen_string_literal: true
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
require 'json'
end
require 'date'
class DateTime
# See #as_json.
def self.json_create(object)
args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
of_a, of_b = object['of'].split('/')
if of_b and of_b != '0'
args << Rational(of_a.to_i, of_b.to_i)
else
args << of_a
end
args << object['sg']
civil(*args)
end
alias start sg unless method_defined?(:start)
# Methods <tt>DateTime#as_json</tt> and +DateTime.json_create+ may be used
# to serialize and deserialize a \DateTime object;
# see Marshal[rdoc-ref:Marshal].
#
# \Method <tt>DateTime#as_json</tt> serializes +self+,
# returning a 2-element hash representing +self+:
#
# require 'json/add/datetime'
# x = DateTime.now.as_json
# # => {"json_class"=>"DateTime", "y"=>2023, "m"=>11, "d"=>21, "sg"=>2299161.0}
#
# \Method +JSON.create+ deserializes such a hash, returning a \DateTime object:
#
# DateTime.json_create(x) # BUG? Raises Date::Error "invalid date"
#
def as_json(*)
{
JSON.create_id => self.class.name,
'y' => year,
'm' => month,
'd' => day,
'H' => hour,
'M' => min,
'S' => sec,
'of' => offset.to_s,
'sg' => start,
}
end
# Returns a JSON string representing +self+:
#
# require 'json/add/datetime'
# puts DateTime.now.to_json
#
# Output:
#
# {"json_class":"DateTime","y":2023,"m":11,"d":21,"sg":2299161.0}
#
def to_json(*args)
as_json.to_json(*args)
end
end
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