Class: Subroutine::Factory::Builder

Inherits:
Object
  • Object
show all
Defined in:
lib/subroutine/factory/builder.rb

Instance Method Summary collapse

Constructor Details

#initialize(config, *args) ⇒ Builder

Returns a new instance of Builder.



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# File 'lib/subroutine/factory/builder.rb', line 7

def initialize(config, *args)
  @config = config
  @options = config.options.dup
  @args = args.dup
  @overrides = @args.extract_options!
end

Instance Method Details

#execute! ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 14

def execute!
  args = @args.dup

  Array(@options[:setups]).each{|block| block.call(args, extras) }

  args.push(inputs)

  op = op_class.new(*args)

  Array(@options[:befores]).each{|block| block.call(op, extras) }

  op.submit!

  output = extract_output(op)

  Array(@options[:afters]).each{|block| block.call(op, output, extras) }

  output
end

#extract_output(op) ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 75

def extract_output(op)
  if @options[:output]
    return op.send(@options[:output])
  elsif @options[:outputs]
    if @options[:outputs].length == 1 && @options[:outputs][0].is_a?(Array)
      @options[:outputs][0].map{|output| op.send(output) }
    else
      @options[:outputs].inject({}){|out, output| out[output] = op.send(output); out }
    end
  else
    op
  end
end

#extras ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 50

def extras
  @extras ||= begin
    out = {}

    @options[:extras].each_pair do |k, v|
      if @overrides.has_key?(k)
        out[k] = @overrides[k]
      elsif !v.nil?
        out[k] = invoke_input(v)
      end
    end

    out
  end
end

#inputs ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 34

def inputs
  @inputs ||= begin
    out = {}

    @options[:inputs].each_pair do |k,v|
      if @overrides.has_key?(k)
        out[k] = @overrides[k]
      else
        out[k] = invoke_input(v)
      end
    end

    out
  end
end

#invoke_input(input) ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 66

def invoke_input(input)
  return input unless input.respond_to?(:call)
  input.arity.zero? ? input.call : input.call(extras)
end

#op_class ⇒ Object 



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# File 'lib/subroutine/factory/builder.rb', line 71

def op_class
  @options[:op].constantize
end