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ruby33
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bigdecimal.rb
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#frozen_string_literal: false unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED require 'json' end begin require 'bigdecimal' rescue LoadError end class BigDecimal # See #as_json. def self.json_create(object) BigDecimal._load object['b'] end # Methods <tt>BigDecimal#as_json</tt> and +BigDecimal.json_create+ may be used # to serialize and deserialize a \BigDecimal object; # see Marshal[rdoc-ref:Marshal]. # # \Method <tt>BigDecimal#as_json</tt> serializes +self+, # returning a 2-element hash representing +self+: # # require 'json/add/bigdecimal' # x = BigDecimal(2).as_json # => {"json_class"=>"BigDecimal", "b"=>"27:0.2e1"} # y = BigDecimal(2.0, 4).as_json # => {"json_class"=>"BigDecimal", "b"=>"36:0.2e1"} # z = BigDecimal(Complex(2, 0)).as_json # => {"json_class"=>"BigDecimal", "b"=>"27:0.2e1"} # # \Method +JSON.create+ deserializes such a hash, returning a \BigDecimal object: # # BigDecimal.json_create(x) # => 0.2e1 # BigDecimal.json_create(y) # => 0.2e1 # BigDecimal.json_create(z) # => 0.2e1 # def as_json(*) { JSON.create_id => self.class.name, 'b' => _dump, } end # Returns a JSON string representing +self+: # # require 'json/add/bigdecimal' # puts BigDecimal(2).to_json # puts BigDecimal(2.0, 4).to_json # puts BigDecimal(Complex(2, 0)).to_json # # Output: # # {"json_class":"BigDecimal","b":"27:0.2e1"} # {"json_class":"BigDecimal","b":"36:0.2e1"} # {"json_class":"BigDecimal","b":"27:0.2e1"} # def to_json(*args) as_json.to_json(*args) end end if defined?(::BigDecimal)