Module: Schemata::HashCopyHelpers

Defined in:
lib/schemata/helpers/hash_copy.rb

Defined Under Namespace

Classes: CopyError

Class Method Summary collapse

Class Method Details

.deep_copy(node) ⇒ Object 



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# File 'lib/schemata/helpers/hash_copy.rb', line 5

def self.deep_copy(node)
  case node
  when String
    return node.dup
  when Numeric, TrueClass, FalseClass
    return node
  when Hash
    copy = {}
    # XXX NB: The 'to_s' below was included because some components use
    # symbols as keys instead of strings. This fix is temporary; in the
    # long term, we should change all components to use the same type for
    # their keys
    node.each { |k, v| copy[k.to_s] = deep_copy(v) }
    return copy
  when Array
    return node.map { |v| deep_copy(v) }
  when NilClass
    return nil
  else
    raise CopyError.new("Unexpected class: #{node.class}")
  end
end