# File lib/json/pure/parser.rb, line 68
68:       def initialize(source, opts = {})
69:         super
70:         if !opts.key?(:max_nesting) # defaults to 19
71:           @max_nesting = 19
72:         elsif opts[:max_nesting]
73:           @max_nesting = opts[:max_nesting]
74:         else
75:           @max_nesting = 0
76:         end
77:         @allow_nan = !!opts[:allow_nan]
78:         ca = true
79:         ca = opts[:create_additions] if opts.key?(:create_additions)
80:         @create_id = ca ? JSON.create_id : nil
81:         @object_class = opts[:object_class] || Hash
82:         @array_class = opts[:array_class] || Array
83:       end