Method Scientific

ext/formatting.go:314–342

Scientific implements formatStringInterpolator.Scientific.

(precision *int)

// Scientific implements formatStringInterpolator.Scientific.
func (c *stringFormatter) Scientific(precision *int) func(ref.Val, string) (string, error) {
	if precision == nil {
		precision = new(int)
		*precision = defaultPrecision
	}
	return func(arg ref.Val, locale string) (string, error) {
		strException := false
		if arg.Type() == types.StringType {
			argStr := arg.Value().(string)
			if argStr == "NaN" || argStr == "Infinity" || argStr == "-Infinity" {
				strException = true
			}
		}
		if arg.Type() != types.DoubleType && !strException {
			return "", scientificFormatError(runtimeID, arg.Type().TypeName())
		}
		argFloatVal := arg.ConvertToType(types.DoubleType)
		argFloat, ok := argFloatVal.Value().(float64)
		if !ok {
			return "", fmt.Errorf("could not convert \"%v\" to float64", argFloatVal.Value())
		}
		matchedLocale, err := matchLanguage(locale)
		if err != nil {
			return "", fmt.Errorf("error matching locale: %w", err)
		}
		fmtStr := fmt.Sprintf("%%%de", *precision)
		return message.NewPrinter(matchedLocale).Sprintf(fmtStr, argFloat), nil
	}
}

// Binary implements formatStringInterpolator.Binary.
func (c *stringFormatter) Binary(arg ref.Val, locale string) (string, error) {