Contents

# these utility methods are taken from Ruby On Rails ActiveSupport module

class Array
  # Extracts options from a set of arguments. Removes and returns the last
  # element in the array if it's a hash, otherwise returns a blank hash.
  #
  #   def options(*args)
  #     args.extract_options!
  #   end
  #
  #   options(1, 2)           # => {}
  #   options(1, 2, :a => :b) # => {:a=>:b}
  def extract_options!
    if last.is_a?(Hash) && last.extractable_options?
      pop
    else
      {}
    end
  end
end

class Module
  def mattr_reader(*syms)
    syms.each do |sym|
      next if sym.is_a?(Hash)
      class_eval(<<-EOS, __FILE__, __LINE__)
        unless defined? @@#{sym}
          @@#{sym} = nil
        end

        def self.#{sym}
          @@#{sym}
        end

        def #{sym}
          @@#{sym}
        end
      EOS
    end
  end

  def mattr_writer(*syms)
    options = syms.extract_options!
    syms.each do |sym|
      class_eval(<<-EOS, __FILE__, __LINE__)
        unless defined? @@#{sym}
          @@#{sym} = nil
        end

        def self.#{sym}=(obj)
          @@#{sym} = obj
        end

        #{"
        def #{sym}=(obj)
          @@#{sym} = obj
        end
        " unless options[:instance_writer] == false }
      EOS
    end
  end

  def mattr_accessor(*syms)
    mattr_reader(*syms)
    mattr_writer(*syms)
  end
end

Version data entries

12 entries across 12 versions & 1 rubygems

Version	Path
recurs-0.0.4.8	lib/util/module.rb
recurs-0.0.4.7	lib/util/module.rb
recurs-0.0.4.6	lib/util/module.rb
recurs-0.0.4.5	lib/util/module.rb
recurs-0.0.4.4	lib/util/module.rb
recurs-0.0.4.3	lib/util/module.rb
recurs-0.0.4.2	lib/util/module.rb
recurs-0.0.4.1	lib/util/module.rb
recurs-0.0.4	lib/util/module.rb
recurs-0.0.3	lib/util/module.rb
recurs-0.0.2	lib/util/module.rb
recurs-0.0.1	lib/util/module.rb