compile

# File activesupport/lib/active_support/parameter_filter.rb, line 63
      def self.compile(filters, mask))
        return lambda { |params| params.dup } if filters.empty?

        strings, regexps, blocks, deep_regexps, deep_strings = [], [], [], nil, nil

        filters.each do |item|
          case item
          when Proc
            blocks << item
          when Regexp
            if item.to_s.include?("\\.")
              (deep_regexps ||= []) << item
            else
              regexps << item
            end
          else
            s = Regexp.escape(item.to_s)
            if s.include?("\\.")
              (deep_strings ||= []) << s
            else
              strings << s
            end
          end
        end

        regexps << Regexp.new(strings.join("|"), true) unless strings.empty?
        (deep_regexps ||= []) << Regexp.new(deep_strings.join("|"), true) if deep_strings&.any?

        new regexps, deep_regexps, blocks, mask: mask
      end