52 lines
1.3 KiB
Ruby
52 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
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require 'json'
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end
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class Complex
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# See #as_json.
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def self.json_create(object)
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Complex(object['r'], object['i'])
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end
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# Methods <tt>Complex#as_json</tt> and +Complex.json_create+ may be used
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# to serialize and deserialize a \Complex object;
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# see Marshal[https://docs.ruby-lang.org/en/master/Marshal.html].
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#
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# \Method <tt>Complex#as_json</tt> serializes +self+,
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# returning a 2-element hash representing +self+:
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#
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# require 'json/add/complex'
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# x = Complex(2).as_json # => {"json_class"=>"Complex", "r"=>2, "i"=>0}
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# y = Complex(2.0, 4).as_json # => {"json_class"=>"Complex", "r"=>2.0, "i"=>4}
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#
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# \Method +JSON.create+ deserializes such a hash, returning a \Complex object:
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#
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# Complex.json_create(x) # => (2+0i)
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# Complex.json_create(y) # => (2.0+4i)
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#
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def as_json(*)
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{
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JSON.create_id => self.class.name,
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'r' => real,
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'i' => imag,
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}
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end
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# Returns a JSON string representing +self+:
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#
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# require 'json/add/complex'
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# puts Complex(2).to_json
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# puts Complex(2.0, 4).to_json
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#
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# Output:
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#
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# {"json_class":"Complex","r":2,"i":0}
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# {"json_class":"Complex","r":2.0,"i":4}
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#
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def to_json(*args)
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as_json.to_json(*args)
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end
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end
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