Module: Demiurge::Util

Extended by:
Util
Included in:
Engine, Util
Defined in:
lib/demiurge/util.rb

Overview

Utilities for deep-copying simple JSON-serializable data structures.

Instance Method Summary collapse

Instance Method Details

#copyfreeze(items) ⇒ Object

This operation duplicates standard data that can be reconstituted from JSON, to make a frozen copy.



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# File 'lib/demiurge/util.rb', line 8

def copyfreeze(items)
  case items
  when Hash
    result = {}
    items.each do |k, v|
      result[k] = copyfreeze(v)
    end
    result.freeze
  when Array
    items.map { |i| copyfreeze(i) }
  when Numeric
    items
  when NilClass
    items
  when TrueClass
    items
  when FalseClass
    items
  when String
    if items.frozen?
      items
    else
      items.dup.freeze
	end
  else
    STDERR.puts "Unrecognized item type #{items.class.inspect} in copyfreeze!"
    items.dup.freeze
  end
end

#deepcopy(items) ⇒ Object

This operation duplicates standard data that can be reconstituted from JSON, to make a non-frozen copy.



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# File 'lib/demiurge/util.rb', line 40

def deepcopy(items)
  case items
  when Hash
    result = {}
    items.each do |k, v|
      result[k] = deepcopy(v)
    end
    result
  when Array
    items.map { |i| deepcopy(i) }
  when Numeric
    items
  when NilClass
    items
  when TrueClass
    items
  when FalseClass
    items
  when String
    items.dup
  else
    STDERR.puts "Unrecognized item type #{items.class.inspect} in copyfreeze!"
    items.dup
  end
end