YARD decorator handler

class MyDecoratorHandler < YARD::Handlers::Ruby::Base
  handles method_call(:my_decorator)

  # my_decorator {meta:'data'}, def foo(a,b,c); end
  
  def process
    args = statement[1]
    mdef = args[1]
    metadata = args[0].source.gsub /[\r\n]/, ''
    
    mdef.docstring = statement.docstring + ['',
      "@note Decorator metadata: #{metadata}",
    ].join("\n")
    
    parse_block mdef
  end
end