in hessian-lite/src/main/java/com/alibaba/com/caucho/hessian/io/Hessian2Input.java [784:994]
public final int readInt()
throws IOException {
//int tag = _offset < _length ? (_buffer[_offset++] & 0xff) : read();
int tag = read();
switch (tag) {
case 'N':
return 0;
case 'F':
return 0;
case 'T':
return 1;
// direct integer
case 0x80:
case 0x81:
case 0x82:
case 0x83:
case 0x84:
case 0x85:
case 0x86:
case 0x87:
case 0x88:
case 0x89:
case 0x8a:
case 0x8b:
case 0x8c:
case 0x8d:
case 0x8e:
case 0x8f:
case 0x90:
case 0x91:
case 0x92:
case 0x93:
case 0x94:
case 0x95:
case 0x96:
case 0x97:
case 0x98:
case 0x99:
case 0x9a:
case 0x9b:
case 0x9c:
case 0x9d:
case 0x9e:
case 0x9f:
case 0xa0:
case 0xa1:
case 0xa2:
case 0xa3:
case 0xa4:
case 0xa5:
case 0xa6:
case 0xa7:
case 0xa8:
case 0xa9:
case 0xaa:
case 0xab:
case 0xac:
case 0xad:
case 0xae:
case 0xaf:
case 0xb0:
case 0xb1:
case 0xb2:
case 0xb3:
case 0xb4:
case 0xb5:
case 0xb6:
case 0xb7:
case 0xb8:
case 0xb9:
case 0xba:
case 0xbb:
case 0xbc:
case 0xbd:
case 0xbe:
case 0xbf:
return tag - BC_INT_ZERO;
/* byte int */
case 0xc0:
case 0xc1:
case 0xc2:
case 0xc3:
case 0xc4:
case 0xc5:
case 0xc6:
case 0xc7:
case 0xc8:
case 0xc9:
case 0xca:
case 0xcb:
case 0xcc:
case 0xcd:
case 0xce:
case 0xcf:
return ((tag - BC_INT_BYTE_ZERO) << 8) + read();
/* short int */
case 0xd0:
case 0xd1:
case 0xd2:
case 0xd3:
case 0xd4:
case 0xd5:
case 0xd6:
case 0xd7:
return ((tag - BC_INT_SHORT_ZERO) << 16) + 256 * read() + read();
case 'I':
case BC_LONG_INT:
return ((read() << 24)
+ (read() << 16)
+ (read() << 8)
+ read());
// direct long
case 0xd8:
case 0xd9:
case 0xda:
case 0xdb:
case 0xdc:
case 0xdd:
case 0xde:
case 0xdf:
case 0xe0:
case 0xe1:
case 0xe2:
case 0xe3:
case 0xe4:
case 0xe5:
case 0xe6:
case 0xe7:
case 0xe8:
case 0xe9:
case 0xea:
case 0xeb:
case 0xec:
case 0xed:
case 0xee:
case 0xef:
return tag - BC_LONG_ZERO;
/* byte long */
case 0xf0:
case 0xf1:
case 0xf2:
case 0xf3:
case 0xf4:
case 0xf5:
case 0xf6:
case 0xf7:
case 0xf8:
case 0xf9:
case 0xfa:
case 0xfb:
case 0xfc:
case 0xfd:
case 0xfe:
case 0xff:
return ((tag - BC_LONG_BYTE_ZERO) << 8) + read();
/* short long */
case 0x38:
case 0x39:
case 0x3a:
case 0x3b:
case 0x3c:
case 0x3d:
case 0x3e:
case 0x3f:
return ((tag - BC_LONG_SHORT_ZERO) << 16) + 256 * read() + read();
case 'L':
return (int) parseLong();
case BC_DOUBLE_ZERO:
return 0;
case BC_DOUBLE_ONE:
return 1;
//case LONG_BYTE:
case BC_DOUBLE_BYTE:
return (byte) (_offset < _length ? _buffer[_offset++] : read());
//case INT_SHORT:
//case LONG_SHORT:
case BC_DOUBLE_SHORT:
return (short) (256 * read() + read());
case BC_DOUBLE_MILL: {
int mills = parseInt();
return (int) (0.001 * mills);
}
case 'D':
return (int) parseDouble();
default:
throw expect("integer", tag);
}
}