Module: Omnis::Transformer::ClassMethods

Defined in:
lib/omnis/transformer.rb

Instance Method Summary collapse

Instance Method Details

#apply_to_value(value) ⇒ Object 



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# File 'lib/omnis/transformer.rb', line 54

def apply_to_value(value)
  @to_value ? @to_value.(value) : value
end

#extract(source, expr) ⇒ Object 



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# File 'lib/omnis/transformer.rb', line 62

def extract(source, expr)
  @extractor.extractor(expr).call(source)
end

#extractor(obj) ⇒ Object 



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# File 'lib/omnis/transformer.rb', line 58

def extractor(obj)
    @extractor = obj
end

#properties ⇒ Object 



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# File 'lib/omnis/transformer.rb', line 30

def properties
  @properties ||= {}
end

#property(name, expr = nil, opts = {}, &block) ⇒ Object

If an expr is provided it will be passed to the configured extractor, otherwise a block should be given. As last resort, it embeds a lambda to look for a class method with the name of the param (at runtime)



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# File 'lib/omnis/transformer.rb', line 37

def property(name, expr=nil, opts={}, &block)
  xtr = case
        when String === expr    ; @extractor.extractor(expr)
        when block_given?       ; block
        else
          ->(source) { self.send(name, source) }
        end

  Omnis::Transformer::Property.new(name, expr, opts, xtr).tap do |prop|
    properties[prop.name] = prop
  end
end

#to_value(&block) ⇒ Object 



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# File 'lib/omnis/transformer.rb', line 50

def to_value(&block)
  @to_value = block
end