class BlankSlate
BlankSlate
provides an abstract base class with no predefined methods (except for _\send_
and _\id_
). BlankSlate
is useful as a base class when writing classes that depend upon method_missing
(e.g. dynamic proxies).
Public Class Methods
hide(name)
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Hide the method named name
in the BlankSlate
class. Don't hide instance_eval
or any method beginning with “__”.
# File lib/grifter/blankslate.rb, line 30 def hide(name) methods = instance_methods.map(&:to_sym) if methods.include?(name.to_sym) and name !~ /^(__|instance_eval)/ @hidden_methods ||= {} @hidden_methods[name.to_sym] = instance_method(name) undef_method name end end
new(parent)
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# File lib/grifter/blankslate.rb, line 56 def initialize(parent) @parent = parent end
reveal(name)
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Redefine a previously hidden method so that it may be called on a blank slate object.
# File lib/grifter/blankslate.rb, line 47 def reveal(name) hidden_method = find_hidden_method(name) fail "Don't know how to reveal method '#{name}'" unless hidden_method define_method(name, hidden_method) end
Public Instance Methods
method_missing(method_id, *arguments, &block)
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# File lib/grifter/blankslate.rb, line 60 def method_missing(method_id, *arguments, &block) @parent.send(method_id, *arguments, &block) end