instiki/vendor/rails/activesupport/lib/active_support/core_ext/class/attribute_accessors.rb
Jacques Distler 4e14ccc74d Instiki 0.16.3: Rails 2.3.0
Instiki now runs on the Rails 2.3.0 Candidate Release.
Among other improvements, this means that it now 
automagically selects between WEBrick and Mongrel.

Just run

    ./instiki --daemon
2009-02-04 14:26:08 -06:00

55 lines
2.1 KiB
Ruby

# Extends the class object with class and instance accessors for class attributes,
# just like the native attr* accessors for instance attributes.
#
# class Person
# cattr_accessor :hair_colors
# end
#
# Person.hair_colors = [:brown, :black, :blonde, :red]
class Class
def cattr_reader(*syms)
syms.flatten.each do |sym|
next if sym.is_a?(Hash)
class_eval(<<-EOS, __FILE__, __LINE__)
unless defined? @@#{sym} # unless defined? @@hair_colors
@@#{sym} = nil # @@hair_colors = nil
end # end
#
def self.#{sym} # def self.hair_colors
@@#{sym} # @@hair_colors
end # end
#
def #{sym} # def hair_colors
@@#{sym} # @@hair_colors
end # end
EOS
end
end
def cattr_writer(*syms)
options = syms.extract_options!
syms.flatten.each do |sym|
class_eval(<<-EOS, __FILE__, __LINE__)
unless defined? @@#{sym} # unless defined? @@hair_colors
@@#{sym} = nil # @@hair_colors = nil
end # end
#
def self.#{sym}=(obj) # def self.hair_colors=(obj)
@@#{sym} = obj # @@hair_colors = obj
end # end
#
#{" #
def #{sym}=(obj) # def hair_colors=(obj)
@@#{sym} = obj # @@hair_colors = obj
end # end
" unless options[:instance_writer] == false } # # instance writer above is generated unless options[:instance_writer] == false
EOS
end
end
def cattr_accessor(*syms)
cattr_reader(*syms)
cattr_writer(*syms)
end
end