Module: FastMultiJson

Defined in:
lib/fast_multi_json.rb,
lib/fast_multi_json/version.rb

Overview

Usage:

class Movie
  def to_json(payload)
    ::FastMultiJson.to_json(payload)
  end

  def from_json(string)
    ::FastMultiJson.from_json(string)
  end
end

Constant Summary collapse

VERSION = 
"1.1.0"

Class Method Summary collapse

Class Method Details

.define_from_json(receiver) ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 80

def self.define_from_json(receiver)
  cl = caller_locations[0]
  method_body = from_json_method
  logger.debug { "Defining #{receiver}._fast_from_json as #{method_body.inspect}" }
  receiver.instance_eval method_body, cl.absolute_path, cl.lineno
end

.define_to_json(receiver) ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 36

def self.define_to_json(receiver)
  cl = caller_locations[0]
  method_body = to_json_method
  logger.debug { "Defining #{receiver}._fast_to_json as #{method_body.inspect}" }
  receiver.instance_eval method_body, cl.absolute_path, cl.lineno
end

.from_json(string) ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 29

def self.from_json(string)
  _fast_from_json(string)
rescue NameError
  define_from_json(::FastMultiJson)
  _fast_from_json(string)
end

.from_json_method ⇒ Object

Decoder-compatible with default MultiJSON adapters and defaults



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# File 'lib/fast_multi_json.rb', line 88

def self.from_json_method
  decode_method = String.new(%(def _fast_from_json(string)\n ))
  decode_method << Result.new {
    require 'oj'
    %(::Oj.load(string, mode: :strict, symbol_keys: false))
  }.rescue {
    require 'yajl'
    %(::Yajl::Parser.new(symbolize_keys: false).parse(string))
  }.rescue {
    require 'jrjackson' unless defined?(::JrJackson)
    %(::JrJackson::Json.load(string))
  }.rescue {
    require 'json'
    %(::JSON.parse(string, quirks_mode: false, symbolize_names: false))
  }.rescue {
    require 'gson'
    %(::Gson::Decoder.new(::FastMultiJson::EMPTY_OPTIONS.dup).decode(string))
  }.rescue {
    require 'active_support/json/decoding'
    %(::ActiveSupport::JSON.decode(string))
  }.rescue {
    fail "No JSON decoder found."
  }.value!
  decode_method << "\nend"
end

.logger(logger = nil) ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 17

def self.logger(logger=nil)
  return @logger = logger if logger
  @logger ||= Logger.new(IO::NULL)
end

.reset_from_json! ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 114

def self.reset_from_json!
  undef :_fast_from_json if method_defined?(:_fast_from_json)
  logger.debug { "Undefining #{receiver}._fast_from_json" }
end

.reset_to_json! ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 75

def self.reset_to_json!
  undef :_fast_to_json if method_defined?(:_fast_to_json)
  logger.debug { "Undefining #{receiver}._fast_to_json" }
end

.to_json(object) ⇒ Object 



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# File 'lib/fast_multi_json.rb', line 22

def self.to_json(object)
  _fast_to_json(object)
rescue NameError
  define_to_json(::FastMultiJson)
  _fast_to_json(object)
end

.to_json_method ⇒ Object

Encoder-compatible with default MultiJSON adapters and defaults



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# File 'lib/fast_multi_json.rb', line 44

def self.to_json_method
  encode_method = String.new(%(def _fast_to_json(object)\n ))
  encode_method << Result.new {
    require 'oj'
    %(::Oj.dump(object, mode: :compat, time_format: :ruby, use_to_json: true, indent: 0))
  }.rescue {
    require 'yajl'
    %(::Yajl::Encoder.encode(object))
  }.rescue {
    require 'jrjackson' unless defined?(::JrJackson)
    if ::JrJackson::Json.method(:dump).arity == 1
      %(::JrJackson::Json.dump(object))
    else
      %(::JrJackson::Json.dump(object, ::FastMultiJson::EMPTY_OPTIONS.dup))
    end
  }.rescue {
    require 'json'
    %(::JSON.fast_generate(object, create_additions: false, quirks_mode: false))
  }.rescue {
    require 'gson'
    %(::Gson::Encoder.new(::FastMultiJson::EMPTY_OPTIONS.dup).encode(object))
  }.rescue {
    require 'active_support/json/encoding'
    %(::ActiveSupport::JSON.encode(object))
  }.rescue {
    warn "No JSON encoder found. Falling back to `object.to_json`"
    %(object.to_json(::JSON::FAST_STATE_PROTOTYPE.to_h))
  }.value!
  encode_method << "\nend"
end