16 lines
432 B
Ruby
16 lines
432 B
Ruby
class Module
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def delegate(*methods)
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options = methods.pop
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unless options.is_a?(Hash) && to = options[:to]
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raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key"
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end
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methods.each do |method|
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module_eval(<<-EOS, "(__DELEGATION__)", 1)
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def #{method}(*args, &block)
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#{to}.__send__(#{method.inspect}, *args, &block)
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end
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EOS
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end
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end
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end |