Class: AppKernel::Function::Options::Option

Inherits:
Object
  • Object
show all
Defined in:
lib/appkernel/function.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, modifiers) ⇒ Option

Returns a new instance of Option.



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# File 'lib/appkernel/function.rb', line 201

def initialize(name, modifiers)
  @name = name.to_sym
  @index = modifiers[:index]
  @required = modifiers[:required] == true
  @lookup = modifiers[:lookup] || modifiers[:parse]
  @type = modifiers[:type]
  @default = modifiers[:default]
end

Instance Attribute Details

#default ⇒ Object (readonly)

Returns the value of attribute default.



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# File 'lib/appkernel/function.rb', line 199

def default
  @default
end

#index ⇒ Object (readonly)

Returns the value of attribute index.



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# File 'lib/appkernel/function.rb', line 199

def index
  @index
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/appkernel/function.rb', line 199

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/appkernel/function.rb', line 199

def type
  @type
end

Instance Method Details

#default? ⇒ Boolean

Returns:



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# File 'lib/appkernel/function.rb', line 214

def default?
  !@default.nil?
end

#required? ⇒ Boolean

Returns:



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# File 'lib/appkernel/function.rb', line 210

def required?
  @required
end

#resolve(o) ⇒ Object 



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# File 'lib/appkernel/function.rb', line 218

def resolve(o)
  if o.nil? then nil  
  elsif @type
    if @type.kind_of?(Class) && o.kind_of?(@type) then o
    elsif @type.kind_of?(Enumerable) && @type.detect {|t| o.kind_of?(t)} then o
    elsif @lookup
      @lookup.call(o)
    elsif @type.respond_to?(:to_option)
      @type.to_option(o)
    else
      raise OptionsError, "don't know how to convert #{o} into #{@type}"
    end
  else
    @lookup ? @lookup.call(o) : o
  end                    
end