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Contents
# frozen_string_literal: true
module MachineDecorator
protected
# Determines whether there's already a helper method defined within the
# given scope. This is true only if one of the owner's ancestors defines
# the method and is further along in the ancestor chain than this
# machine's helper module.
def owner_class_ancestor_has_method?(scope, method)
return false unless owner_class_has_method?(scope, method)
superclasses = owner_class.ancestors.select { |ancestor| ancestor.is_a?(Class) }[1..-1]
if scope == :class
current = owner_class.singleton_class
superclass = superclasses.first
else
current = owner_class
superclass = owner_class.superclass
end
# Generate the list of modules that *only* occur in the owner class, but
# were included *prior* to the helper modules, in addition to the
# superclasses
ancestors = current.ancestors - superclass.ancestors + superclasses
ancestors = ancestors[ancestors.index(@helper_modules[scope])..-1].reverse
# Search for for the first ancestor that defined this method
ancestors.detect do |ancestor|
ancestor = ancestor.singleton_class if scope == :class && ancestor.is_a?(Class)
ancestor.method_defined?(method) || ancestor.private_method_defined?(method)
end
end
end
::StateMachines::Machine.prepend MachineDecorator
Version data entries
97 entries across 97 versions & 2 rubygems