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class Module
attr_accessor :_setup_block
attr_accessor :_dependencies
def setup(&blk)
@_setup_block = blk
end
def use(mod)
return if self < mod
(mod._dependencies || []).each do |dep|
use dep
end
# raise "Circular dependencies" if self < mod
include mod
extend mod.const_get("ClassMethods") if mod.const_defined?("ClassMethods")
class_eval(&mod._setup_block) if mod._setup_block
end
def depends_on(mod)
return if self < mod
@_dependencies ||= []
@_dependencies << mod
end
end
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