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Contents
module Usable
class ModExtender
attr_reader :name
attr_accessor :copy, :mod, :options, :unwanted
def initialize(mod, options = {})
@mod = mod
@options = options
@options[:method] ||= :include
@copy = mod
@name = mod.name
@unwanted = find_unwanted_methods(options[:only])
if @unwanted.any?
@copy = @copy.dup
end
end
# @description Directly include a module whose methods you want made available in +usables.available_methods+
# Gives the module a name when including so that it shows up properly in the list of ancestors
def call(target)
unwanted.each do |method_name|
copy.send :remove_method, method_name
end
if copy.name.nil?
const_name = "#{mod_name}Used"
target.send :remove_const, const_name if target.const_defined? const_name, false
target.const_set const_name, copy
end
target.usables.add_module copy if target.respond_to?(:usables)
target.send options[:method], copy
end
def mod_name
if name
name.split('::').last
else
"UsableMod#{Time.now.strftime('%s')}"
end
end
def find_unwanted_methods(only)
return [] unless only
if :constants == only
@copy.instance_methods
else
@copy.instance_methods - Array(only)
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems