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).
Private 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/blankslate.rb, line 46 def hide(name) warn_level = $VERBOSE $VERBOSE = nil if instance_methods.include?(name._blankslate_as_name) && name !~ /^(__|instance_eval$)/ @hidden_methods ||= {} @hidden_methods[name.to_sym] = instance_method(name) undef_method name end ensure $VERBOSE = warn_level 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/blankslate.rb, line 66 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