diff options
Diffstat (limited to 'activesupport/lib/active_support/vendor/builder-2.1.2/lib/blankslate.rb')
| -rw-r--r-- | activesupport/lib/active_support/vendor/builder-2.1.2/lib/blankslate.rb | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/activesupport/lib/active_support/vendor/builder-2.1.2/lib/blankslate.rb b/activesupport/lib/active_support/vendor/builder-2.1.2/lib/blankslate.rb deleted file mode 100644 index da6034d9c4..0000000000 --- a/activesupport/lib/active_support/vendor/builder-2.1.2/lib/blankslate.rb +++ /dev/null @@ -1,113 +0,0 @@ -#!/usr/bin/env ruby -#-- -# Copyright 2004, 2006 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. -#++ - -###################################################################### -# 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 - - # Hide the method named +name+ in the BlankSlate class. Don't - # hide +instance_eval+ or any method beginning with "__". - def hide(name) - if instance_methods.include?(name.to_s) and - name !~ /^(__|instance_eval)/ - @hidden_methods ||= {} - @hidden_methods[name.to_sym] = instance_method(name) - undef_method name - end - end - - def find_hidden_method(name) - @hidden_methods ||= {} - @hidden_methods[name] || superclass.find_hidden_method(name) - end - - # Redefine a previously hidden method so that it may be called on a blank - # slate object. - def reveal(name) - bound_method = nil - unbound_method = find_hidden_method(name) - fail "Don't know how to reveal method '#{name}'" unless unbound_method - define_method(name) do |*args| - bound_method ||= unbound_method.bind(self) - bound_method.call(*args) - end - 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 method -# defined after BlankSlate has been loaded. -# -module Kernel - class << self - alias_method :blank_slate_method_added, :method_added - - # Detect method additions to Kernel and remove them in the - # BlankSlate class. - def method_added(name) - result = blank_slate_method_added(name) - return result if self != Kernel - BlankSlate.hide(name) - result - end - end -end - -###################################################################### -# Same as above, except in Object. -# -class Object - class << self - alias_method :blank_slate_method_added, :method_added - - # Detect method additions to Object and remove them in the - # BlankSlate class. - def method_added(name) - result = blank_slate_method_added(name) - return result if self != Object - BlankSlate.hide(name) - result - end - - def find_hidden_method(name) - nil - end - end -end - -###################################################################### -# Also, modules included into Object need to be scanned and have their -# instance methods removed from blank slate. In theory, modules -# included into Kernel would have to be removed as well, but a -# "feature" of Ruby prevents late includes into modules from being -# exposed in the first place. -# -class Module - alias blankslate_original_append_features append_features - def append_features(mod) - result = blankslate_original_append_features(mod) - return result if mod != Object - instance_methods.each do |name| - BlankSlate.hide(name) - end - result - end -end
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