parser

var (
	// ErrNoDate means date value is missing in the record.
	ErrNoDate = errors.New("missing date")

	// ErrDate means the date value has invalid format (####.##) or incorrect,
	// e.g. not a number or the year is below [MinYear]. October is an exception
	// to the date format, it is represented by ####.1.
	ErrDate = errors.New("invalid date")

	// ErrYear means the date has invalid year
	ErrYear = errors.New("invalid year")

	// ErrMonth means the date has invalid month.
	ErrMonth = errors.New("invalid month")
)

var (
	// ErrNoSPX means SPX value is missing in the record.
	ErrNoSPX = errors.New("missing SPX")

	// ErrSPX means SPX value has invalid format. It should be ####.## with
	// dollar and cents.
	ErrSPX = errors.New("invalid SPX")
)

var (
	// ErrNoDividend means Dividend value is missing in the record.
	ErrNoDividend = errors.New("missing dividend")

	// ErrDividend means Dividend value has invalid format. See [ErrSPX] for
	// format description.
	ErrDividend = errors.New("invalid dividend")
)

var (
	// ErrNoEarnings means Earnings are missing in the record.
	ErrNoEarnings = errors.New("missing CPI")

	// ErrEarnings means Earnings has invalid format. See [ErrSPX] for
	// format description.
	ErrEarnings = errors.New("invalid CPI")
)

var (
	// ErrNoCPI means Consumer Price Index is missing in the record.
	ErrNoCPI = errors.New("missing CPI")

	// ErrCPI means Consumer Price Index has invalid format. See [ErrSPX] for
	// format description.
	ErrCPI = errors.New("invalid CPI")
)

var (
	// ErrFormat means the field has invalid format.
	ErrFormat = errors.New("invalid format")

	// ErrDollar means dollar part of the value in ####.## fails to parse.
	ErrDollar = errors.New("invalid dollar")

	// ErrCent means cent part of the value in ####.## fails to parse.
	ErrCent = errors.New("invalid cent")
)