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require 'set'
class RecursiveOpenStruct::DeepDup
def initialize(opts={})
@recurse_over_arrays = opts.fetch(:recurse_over_arrays, false)
@preserve_original_keys = opts.fetch(:preserve_original_keys, false)
end
def call(obj)
deep_dup(obj)
end
private
def deep_dup(obj, visited=Set.new)
if obj.is_a?(Hash)
obj.each_with_object({}) do |(key, value), h|
h[@preserve_original_keys ? key : key.to_sym] = value_or_deep_dup(value, visited)
end
elsif obj.is_a?(Array) && @recurse_over_arrays
obj.each_with_object([]) do |value, arr|
value = value.is_a?(RecursiveOpenStruct) ? value.to_h : value
arr << value_or_deep_dup(value, visited)
end
else
obj
end
end
def value_or_deep_dup(value, visited)
obj_id = value.object_id
visited.include?(obj_id) ? value : deep_dup(value, visited << obj_id)
end
end
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