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module Twitter
class Factory
# Instantiates a new action object
#
# @param attrs [Hash]
# @raise [ArgumentError] Error raised when supplied argument is missing an :action key.
# @return [Twitter::Action::Favorite, Twitter::Action::Follow, Twitter::Action::ListMemberAdded, Twitter::Action::Mention, Twitter::Action::Reply, Twitter::Action::Retweet]
def self.fetch_or_new(method, klass, attrs={})
return unless attrs
type = attrs.delete(method.to_sym)
if type
const_name = type.gsub(/\/(.?)/){"::#{$1.upcase}"}.gsub(/(?:^|_)(.)/){$1.upcase}
klass.const_get(const_name.to_sym).fetch_or_new(attrs)
else
raise ArgumentError, "argument must have :#{method} key"
end
end
end
end
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