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module ActiveSupport
module DependencyModule
def append_features(base)
return if base < self
(@_dependencies ||= []).each { |dep| base.send(:include, dep) }
super
end
def included(base = nil, &block)
if base.nil? && block_given?
@_included_block = block
else
base.extend const_get("ClassMethods") if const_defined?("ClassMethods")
base.class_eval(&@_included_block) if instance_variable_defined?("@_included_block")
end
end
def depends_on(mod)
return if self < mod
@_dependencies ||= []
@_dependencies << mod
end
end
end
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