class ActiveModel::AttributeMethods::ClassMethods::AttributeMethodMatcher

def initialize(prefix: "", suffix: "", parameters: nil)
  @prefix = prefix
  @suffix = suffix
  @parameters = parameters.nil? ? FORWARD_PARAMETERS : parameters
  @regex = /\A(?:#{Regexp.escape(@prefix)})(.*)(?:#{Regexp.escape(@suffix)})\z/
  @target = "#{@prefix}attribute#{@suffix}"
  @method_name = "#{prefix}%s#{suffix}"
end

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

def method_name(attr_name)
  @method_name % attr_name
end