#!/usr/bin/ruby -w

class ToolBox
	def initialize(args = {})
		@@class_stash ||= {}
		args.each_pair { |k, v| register_pair(k, v) }
	end

	def ToolBox.method_missing(sym, *args)
		sym_str = sym.to_s
		if sym_str.gsub!(/=\Z/xm, '').nil?
			warn 'warning: Class variable @@%s not initialized' % sym unless @@class_stash.has_key?(sym)
			return @@class_stash[sym]
		else
			@@class_stash[sym_str.to_sym] = args
			return nil
		end
	end

	def method_missing(sym, *args)
		sym_str = sym.to_s
		return sym_str.gsub!(/=\Z/xm, '').nil? ? self.instance_variable_get(make_instance_sym(sym)) : register_pair(sym_str, args)
	end

	private

	def make_instance_sym(k)
		return ('@%s' % k).to_sym
	end

	def register_pair(k, v)
		self.instance_variable_set(make_instance_sym(k), v)
	end
end

tb = ToolBox.new(:asdf => 'fff')
puts tb.asdf
puts tb.asdfg
tb.asdfg = 'omg'
puts tb.asdfg

ToolBox.test = 'asdf;'
puts ToolBox.test
puts ToolBox.asdf