Sha256: a355b18924f6992ae194354414a0e1da822cf0126e8833e689f157a23560cf89
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Size: 1.77 KB
Versions: 1
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Contents
#-- # BlankSlate # # Copyright 2004 by Jim Weirich (jim@weirichhouse.org). # All rights reserved. # # Permission is granted for use, copying, modification, distribution, # and distribution of modified versions of this work as long as the # above copyright notice is included. # # ========================================================================== # Revision History :: # -------------------------------------------------------------------------- # 2005.04.28 Trans * Ported to Mega Modules. # ========================================================================== #++ # :title: BlankSlate # # BlankSlate provides an abstract base class with no predefined # methods (except for <tt>\_\_send__</tt> and <tt>\_\_id__</tt>). # BlankSlate is useful as a base class when writing classes that # depend upon <tt>method_missing</tt> (e.g. dynamic proxies). class BlankSlate class << self def hide(name) undef_method name if instance_methods.include?(name.to_s) and name !~ /^(__|instance_eval)/ end end instance_methods.each { |m| hide(m) } end # Since Ruby is very dynamic, methods added to the ancestors of # BlankSlate <em>after BlankSlate is defined</em> will show up in the # list of available BlankSlate methods. We handle this by defining a hook # in the Object and Kernel classes that will hide any defined. module Kernel class << self alias_method :blank_slate_method_added, :method_added def method_added(name) blank_slate_method_added(name) return if self != Kernel BlankSlate.hide(name) end end end class Object class << self alias_method :blank_slate_method_added, :method_added def method_added(name) blank_slate_method_added(name) return if self != Object BlankSlate.hide(name) end end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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mega-0.3.1 | lib/mega/blankslate.rb |