Module: CrazyDoll::Config

Defined in:
lib/crazy_doll/config.rb

Defined Under Namespace

Modules: Backend Classes: Instance

Class Method Summary collapse

Class Method Details

.new(type, *args) ⇒ Object 



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# File 'lib/crazy_doll/config.rb', line 5

def self.new(type, *args)
  case type
  when /yaml/i then Backend::YAML.new(*args)
  else raise ArgumentError, "no config backend #{type.inspect}"
  end
end

.parse(owner, key, description, value) ⇒ Object 



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# File 'lib/crazy_doll/config.rb', line 12

def self.parse(owner, key, description, value)
  out = setup_class(value.class) unless value.respond_to?(:crazy_doll_setuped?) and value.to_yaml('class_setuped?') == 'YES SIR !'
  return value if value.crazy_doll_setuped?
  value.owner       = owner
  value.key         = key
  value.description = description
  value
end

.setup_class(klass) ⇒ Object 



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# File 'lib/crazy_doll/config.rb', line 21

def self.setup_class(klass)
  klass.class_eval do
    def crazy_doll_setuped?
      @owner and @key and @description ? true : false
    end

    alias :crazy_doll_setuped :crazy_doll_setuped?

    [['owner', 'to_s'], ['key', 'to_sym'], ['description', 'to_s']].each do |name,m|
      class_eval <<-EVAL
        def #{name}
          @#{name} || nil
        end

        def #{name}=(value)
          raise ArgumentError, "can't redefine #{name}" if defined?(@#{name})
          @#{name} = value.#{m}
        end
      EVAL
    end

    alias :__to_yaml :to_yaml

    def _to_yaml(opts = {})
      return __to_yaml(opts) unless crazy_doll_setuped?
      a, b, c = @owner, @key, @description
      ['@owner', '@key', '@description'].each { |x| remove_instance_variable(x) }
      begin
        return __to_yaml(opts)
      ensure
        @owner, @key, @description = a, b, c
      end
    end

    def to_yaml( opts = {} )
      return 'YES SIR !' if opts == 'class_setuped?'
      return _to_yaml(opts) unless crazy_doll_setuped?
      YAML.quick_emit( self.object_id, opts ) do |out|
        out.map( "tag:crazydoll.org,2010:ConfigVar", "crazydoll.org,2010/ConfigVar" ) do |map|
          map.add('owner',       self.owner      )
          map.add('key',         self.key        )
          map.add('description', self.description)
          map.add('value',       self._to_yaml   )
        end
      end
    end
  end
end