module Spreadsheet
  module Excel
    ##
    # This class encapsulates Excel Error-Codes
    class Error
      attr_reader :code
      ERROR_VALUES = {
        0x00 => "#NULL!",  # Intersection of two cell ranges is empty
        0x07 => "#DIV/0!", # Division by zero
        0x0F => "#VALUE!", # Wrong type of operand
        0x17 => "#REF!",   # Illegal or deleted cell reference
        0x1D => "#NAME?",  # Wrong function or range name
        0x24 => "#NUM!",   # Value range overflow
        0x2A => "#N/A!"   # Argument or function not available
      }
      def initialize code
        @code = code
      end

      ##
      # The String value Excel associates with an Error code
      def value
        ERROR_VALUES.fetch @code, "#UNKNOWN"
      end
    end
  end
end