core/src/main/java/com/alibaba/fastjson2/JSONReaderASCII.java [304:371]:
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                if (ch > 0xFF || ch < 0 || i >= 8 || (i == 0 && ch == 0)) {
                    nameValue = 0;
                    offset = this.nameBegin;
                    break;
                }

                switch (i) {
                    case 0:
                        nameValue = (byte) ch;
                        break;
                    case 1:
                        nameValue = (((byte) ch) << 8) + (nameValue & 0xFFL);
                        break;
                    case 2:
                        nameValue = (((byte) ch) << 16) + (nameValue & 0xFFFFL);
                        break;
                    case 3:
                        nameValue = (((byte) ch) << 24) + (nameValue & 0xFFFFFFL);
                        break;
                    case 4:
                        nameValue = (((long) (byte) ch) << 32) + (nameValue & 0xFFFFFFFFL);
                        break;
                    case 5:
                        nameValue = (((long) (byte) ch) << 40L) + (nameValue & 0xFFFFFFFFFFL);
                        break;
                    case 6:
                        nameValue = (((long) (byte) ch) << 48L) + (nameValue & 0xFFFFFFFFFFFFL);
                        break;
                    case 7:
                        nameValue = (((long) (byte) ch) << 56L) + (nameValue & 0xFFFFFFFFFFFFFFL);
                        break;
                    default:
                        break;
                }
            }
        }

        long hashCode;
        if (nameValue != 0) {
            hashCode = nameValue;
        } else {
            hashCode = Fnv.MAGIC_HASH_CODE;
            for (int i = 0; ; ++i) {
                ch = bytes[offset];
                if (ch == '\\') {
                    nameEscape = true;
                    ch = bytes[++offset];
                    switch (ch) {
                        case 'u': {
                            ch = hexDigit4(bytes, check3(offset + 1, end));
                            offset += 4;
                            break;
                        }
                        case 'x': {
                            ch = char2(bytes[offset + 1], bytes[offset + 2]);
                            offset += 2;
                            break;
                        }
                        case '\\':
                        case '"':
                        default:
                            ch = char1(ch);
                            break;
                    }
                    offset++;
                    hashCode ^= ch;
                    hashCode *= Fnv.MAGIC_PRIME;
                    continue;
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core/src/main/java/com/alibaba/fastjson2/JSONReaderUTF8.java [2634:2700]:
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            if (ch > 0xFF || ch < 0 || i >= 8 || (i == 0 && ch == 0)) {
                nameValue = 0;
                offset = this.nameBegin;
                break;
            }

            switch (i) {
                case 0:
                    nameValue = (byte) ch;
                    break;
                case 1:
                    nameValue = (((byte) ch) << 8) + (nameValue & 0xFFL);
                    break;
                case 2:
                    nameValue = (((byte) ch) << 16) + (nameValue & 0xFFFFL);
                    break;
                case 3:
                    nameValue = (((byte) ch) << 24) + (nameValue & 0xFFFFFFL);
                    break;
                case 4:
                    nameValue = (((long) (byte) ch) << 32) + (nameValue & 0xFFFFFFFFL);
                    break;
                case 5:
                    nameValue = (((long) (byte) ch) << 40L) + (nameValue & 0xFFFFFFFFFFL);
                    break;
                case 6:
                    nameValue = (((long) (byte) ch) << 48L) + (nameValue & 0xFFFFFFFFFFFFL);
                    break;
                case 7:
                    nameValue = (((long) (byte) ch) << 56L) + (nameValue & 0xFFFFFFFFFFFFFFL);
                    break;
                default:
                    break;
            }
        }

        long hashCode;
        if (nameValue != 0) {
            hashCode = nameValue;
        } else {
            hashCode = Fnv.MAGIC_HASH_CODE;
            for (int i = 0; ; ++i) {
                ch = bytes[offset];
                if (ch == '\\') {
                    nameEscape = true;
                    ch = bytes[++offset];
                    switch (ch) {
                        case 'u': {
                            ch = hexDigit4(bytes, check3(offset + 1, end));
                            offset += 4;
                            break;
                        }
                        case 'x': {
                            ch = char2(bytes[offset + 1], bytes[offset + 2]);
                            offset += 2;
                            break;
                        }
                        case '\\':
                        case '"':
                        default:
                            ch = char1(ch);
                            break;
                    }
                    offset++;
                    hashCode ^= ch;
                    hashCode *= Fnv.MAGIC_PRIME;
                    continue;
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