class ActiveModel::AttributeMethods::ClassMethods::AttributeMethodMatcher

def initialize(options = {})
  @prefix, @suffix = options.fetch(:prefix, ""), options.fetch(:suffix, "")
  @regex = /^(?:#{Regexp.escape(@prefix)})(.*)(?:#{Regexp.escape(@suffix)})$/
  @method_missing_target = "#{@prefix}attribute#{@suffix}"
  @method_name = "#{prefix}%s#{suffix}"
end

def match(method_name)
  if @regex =~ method_name
    AttributeMethodMatch.new(method_missing_target, $1, method_name)
  end
end

def method_name(attr_name)
  @method_name % attr_name
end

def plain?
  prefix.empty? && suffix.empty?
end