func()

in json/visitor.go [429:476]

• 37 lines of code
• 12 McCabe index (conditional complexity)

func (vs *Visitor) onFloat(f float64, bits int) error {
	if err := vs.tryElemNext(); err != nil {
		return err
	}

	if math.IsInf(f, 0) || math.IsNaN(f) {
		if !vs.ignoreInvalidFloat {
			return fmt.Errorf("unsupported float value: %v", f)
		}
		return vs.w.write(nullSymbol)
	}

	b := strconv.AppendFloat(vs.scratch[:0], f, 'g', -1, bits)

	if vs.explicitRadixPoint {
		// b can be in either decimal form or scientific notation.
		// For decimal form, append ".0" if radix point '.' is not present in the encoded number.
		// e.g. 1 becomes 1.0.
		// For scientific notation, append ".0" to mantissa if radix point '.' is not present in the encoded mantissa.
		// e.g. 1e+2 becomes 1.0e+2.
		needDp := true
		expIdx := len(b)

	loop:
		for i, c := range b {
			switch c {
			case 'e': // exponent separator
				expIdx = i
				break loop
			case '.': // decimal point
				needDp = false
				break loop
			}
		}

		if err := vs.w.write(b[:expIdx]); err != nil {
			return err
		}
		if needDp {
			if err := vs.w.write([]byte(".0")); err != nil {
				return err
			}
		}
		return vs.w.write(b[expIdx:])
	}

	return vs.w.write(b)
}