Method parseUnicode

decode_string_unicode.go:47–98

()

}

func (dec *Decoder) parseUnicode() ([]byte, error) {
	// get unicode after u
	r, err := dec.getUnicode()
	if err != nil {
		return nil, err
	}
	// no error start making new string
	str := make([]byte, 16, 16)
	i := 0
	// check if code can be a surrogate utf16
	if utf16.IsSurrogate(r) {
		if dec.cursor >= dec.length && !dec.read() {
			return nil, dec.raiseInvalidJSONErr(dec.cursor)
		}
		c := dec.data[dec.cursor]
		if c != '\\' {
			i += utf8.EncodeRune(str, r)
			return str[:i], nil
		}
		dec.cursor++
		if dec.cursor >= dec.length && !dec.read() {
			return nil, dec.raiseInvalidJSONErr(dec.cursor)
		}
		c = dec.data[dec.cursor]
		if c != 'u' {
			i += utf8.EncodeRune(str, r)
			str, err = dec.appendEscapeChar(str[:i], c)
			if err != nil {
				dec.err = err
				return nil, err
			}
			i++
			dec.cursor++
			return str[:i], nil
		}
		dec.cursor++
		r2, err := dec.getUnicode()
		if err != nil {
			return nil, err
		}
		combined := utf16.DecodeRune(r, r2)
		if combined == '\uFFFD' {
			i += utf8.EncodeRune(str, r)
			i += utf8.EncodeRune(str, r2)
		} else {
			i += utf8.EncodeRune(str, combined)
		}
		return str[:i], nil
	}
	i += utf8.EncodeRune(str, r)
	return str[:i], nil
}