lib/multi_json/adapters/oj.rb
require "set"
require "oj"
require "multi_json/adapter"
module MultiJson
module Adapters
# Use the Oj library to dump/load.
class Oj < Adapter
defaults :load, mode: :strict, symbolize_keys: false
defaults :dump, mode: :compat, time_format: :ruby, use_to_json: true
# In certain cases OJ gem may throw JSON::ParserError exception instead
# of its own class. Also, we can't expect ::JSON::ParserError and
# ::Oj::ParseError to always be defined, since it's often not the case.
# Because of this, we can't reference those classes directly and have to
# do string comparison instead. This will not catch subclasses, but it
# shouldn't be a problem since the library is not known to be using it
# (at least for now).
class ParseError < ::SyntaxError
WRAPPED_CLASSES = %w[Oj::ParseError JSON::ParserError].to_set.freeze
def self.===(exception)
case exception
when ::SyntaxError
true
else
WRAPPED_CLASSES.include?(exception.class.to_s)
end
end
end
def load(string, options = {})
options[:symbol_keys] = options[:symbolize_keys]
::Oj.load(string, options)
end
case ::Oj::VERSION
when /\A2\./
def dump(object, options = {})
options[:indent] = 2 if options[:pretty]
options[:indent] = options[:indent].to_i if options[:indent]
::Oj.dump(object, options)
end
when /\A3\./
PRETTY_STATE_PROTOTYPE = {
indent: " ",
space: " ",
space_before: "",
object_nl: "\n",
array_nl: "\n",
ascii_only: false
}.freeze
def dump(object, options = {})
options.merge!(PRETTY_STATE_PROTOTYPE.dup) if options.delete(:pretty)
::Oj.dump(object, options)
end
else
raise "Unsupported Oj version: #{::Oj::VERSION}"
end
end
end
end