Class: CattrProxy

Inherits:
Object show all
Defined in:
lib/lib/proxy.rb

Instance Method Summary collapse

Constructor Details

#initialize(host) ⇒ CattrProxy

Returns a new instance of CattrProxy.



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# File 'lib/lib/proxy.rb', line 2

def initialize host
  @host = host
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(key, value = nil) ⇒ Object 



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# File 'lib/lib/proxy.rb', line 6

def method_missing key, value = nil
  name = '@cattr_%s' % key

  if name.sub!(/=$/, '')
    @host.instance_variable_set name, value
  else
    unless value.nil?
      raise ArgumentError, 'Plese use setter cattr.%s= to set argument' % key
    end

    for el in @host.ancestors
      if el.respond_to?(:superclass) && el != Object && el.instance_variable_defined?(name)
        local = el.instance_variable_get name

        if local === Proc
          local = @host.instance_exec &local
        end

        return local
      end
    end

    raise ArgumentError, 'Cattr class variable "cattr.%s" not defined on "%s".' % [name.sub('@cattr_', ''), @host]
  end
end