instiki/vendor/rails/activesupport/lib/active_support/core_ext/module/attribute_accessors.rb
Jacques Distler 664552ac02 Rails 2.3.3.1
Update to latest Rails.
A little bit of jiggery-pokery is involved, since they
neglected to re-include vendored Rack in this release.
2009-08-04 10:16:03 -05:00

61 lines
2.4 KiB
Ruby

require "active_support/core_ext/array"
# Extends the module object with module and instance accessors for class attributes,
# just like the native attr* accessors for instance attributes.
#
# module AppConfiguration
# mattr_accessor :google_api_key
# self.google_api_key = "123456789"
#
# mattr_accessor :paypal_url
# self.paypal_url = "www.sandbox.paypal.com"
# end
#
# AppConfiguration.google_api_key = "overriding the api key!"
class Module
def mattr_reader(*syms)
syms.each do |sym|
next if sym.is_a?(Hash)
class_eval(<<-EOS, __FILE__, __LINE__)
unless defined? @@#{sym} # unless defined? @@pagination_options
@@#{sym} = nil # @@pagination_options = nil
end # end
#
def self.#{sym} # def self.pagination_options
@@#{sym} # @@pagination_options
end # end
#
def #{sym} # def pagination_options
@@#{sym} # @@pagination_options
end # end
EOS
end
end
def mattr_writer(*syms)
options = syms.extract_options!
syms.each do |sym|
class_eval(<<-EOS, __FILE__, __LINE__)
unless defined? @@#{sym} # unless defined? @@pagination_options
@@#{sym} = nil # @@pagination_options = nil
end # end
#
def self.#{sym}=(obj) # def self.pagination_options=(obj)
@@#{sym} = obj # @@pagination_options = obj
end # end
#
#{" #
def #{sym}=(obj) # def pagination_options=(obj)
@@#{sym} = obj # @@pagination_options = obj
end # end
" unless options[:instance_writer] == false } # # instance writer above is generated unless options[:instance_writer] == false
EOS
end
end
def mattr_accessor(*syms)
mattr_reader(*syms)
mattr_writer(*syms)
end
end