Method parseUint

json/parse.go:163–201

parseUint is like parseInt but for unsigned integers.

(b []byte, t reflect.Type)

// parseUint is like parseInt but for unsigned integers.
func (d decoder) parseUint(b []byte, t reflect.Type) (uint64, []byte, error) {
	var value uint64
	var count int

	if len(b) == 0 {
		return 0, b, syntaxError(b, "cannot decode integer value from an empty input")
	}

	if len(b) > 1 && b[0] == '0' && '0' <= b[1] && b[1] <= '9' {
		return 0, b, syntaxError(b, "invalid leading character '0' in integer")
	}

	for ; count < len(b) && b[count] >= '0' && b[count] <= '9'; count++ {
		x := uint64(b[count] - '0')
		next := value*10 + x
		if next < value {
			return 0, b, unmarshalOverflow(b, t)
		}
		value = next
	}

	if count == 0 {
		b, err := d.inputError(b, t)
		return 0, b, err
	}

	if count < len(b) {
		switch b[count] {
		case '.', 'e', 'E': // was this actually a float?
			v, r, _, err := d.parseNumber(b)
			if err != nil {
				v, r = b[:count+1], b[count+1:]
			}
			return 0, r, unmarshalTypeError(v, t)
		}
	}

	return value, b[count:], nil
}

// parseUintHex parses a hexadecimanl representation of a uint64 from b.
//