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Contents
# = promoteself.rb
#
# == Copyright (c) 2005 Thomas Sawyer
#
# Ruby License
#
# This module is free software. You may use, modify, and/or redistribute this
# software under the same terms as Ruby.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.
#
# == Author(s)
#
# * Thomas Sawyer
# Author:: Thomas Sawyer
# Copyright:: Copyright (c) 2005 Thomas Sawyer
# License:: Ruby License
# = PromoteSelf
#
# PromoteSelf converts a module's class methods into instance methods
# such that the first parameter is passed self at the instance level.
# This promotes DRY programming when wishing to offer both an inheritable
# and a module callable procedure.
#
# == Usage
#
# module MyModule
# extend PromoteSelf
# def self.jumble( obj, arg )
# obj + arg
# end
# end
#
# class String
# include MyModule
# end
#
# MyModule.jumble( "Try", "Me" ) #=> "TryMe"
#
# "Try".jumble( "Me" ) #=> 'TryMe'
#
module PromoteSelf
alias_method :singleton_method_added_promoteself, :singleton_method_added if defined?(singleton_method_added)
def singleton_method_added( meth )
d = %{
def #{meth}(*args)
#{self.name}.#{meth}(self,*args)
end
}
self.class_eval d
singleton_method_added_promoteself( meth ) if defined?(singleton_method_added_promoteself)
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin testing
require 'test/unit'
# fixture
module MyModule
extend PromoteSelf
def self.jumble( obj, arg )
obj + arg
end
end
class String
include MyModule
end
# test
class TC_PromoteSelf < Test::Unit::TestCase
def test01
assert_equal( 'TryMe', MyModule.jumble( "Try", "Me" ) )
end
def test02
assert_equal( 'TryMe', "Try".jumble( "Me" ) )
end
end
=end
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16 entries across 16 versions & 1 rubygems