55 lines
1.5 KiB
Ruby
55 lines
1.5 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 Range
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# See #as_json.
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def self.json_create(object)
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new(*object['a'])
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end
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# Methods <tt>Range#as_json</tt> and +Range.json_create+ may be used
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# to serialize and deserialize a \Range 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>Range#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/range'
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# x = (1..4).as_json # => {"json_class"=>"Range", "a"=>[1, 4, false]}
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# y = (1...4).as_json # => {"json_class"=>"Range", "a"=>[1, 4, true]}
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# z = ('a'..'d').as_json # => {"json_class"=>"Range", "a"=>["a", "d", false]}
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#
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# \Method +JSON.create+ deserializes such a hash, returning a \Range object:
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#
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# Range.json_create(x) # => 1..4
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# Range.json_create(y) # => 1...4
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# Range.json_create(z) # => "a".."d"
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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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'a' => [ first, last, exclude_end? ]
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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/range'
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# puts (1..4).to_json
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# puts (1...4).to_json
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# puts ('a'..'d').to_json
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#
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# Output:
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#
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# {"json_class":"Range","a":[1,4,false]}
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# {"json_class":"Range","a":[1,4,true]}
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# {"json_class":"Range","a":["a","d",false]}
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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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