MsgPack.java
/*
* Copyright 2001-present Stephen Colebourne
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.joda.beans.ser.bin;
import java.io.IOException;
import java.nio.charset.Charset;
/**
* Constants used in MsgPack binary serialization.
* <p>
* This uses the v2.0 specification of MsgPack as of 2014-01-29.
*/
abstract class MsgPack {
/**
* UTF-8 encoding.
*/
static final Charset UTF_8 = Charset.forName("UTF-8");
/**
* Maximum fixed int.
*/
static final int MAX_FIX_INT = 0x7F;
/**
* Minimum fixed int.
*/
static final int MIN_FIX_INT = 0xFFFFFFE0;
/**
* Min fixed map - up to length 15.
*/
static final int MIN_FIX_MAP = 0xFFFFFF80;
/**
* Max fixed map.
*/
static final int MAX_FIX_MAP = 0xFFFFFF8F;
/**
* Min fixed array - up to length 15.
*/
static final int MIN_FIX_ARRAY = 0xFFFFFF90;
/**
* Max fixed array.
*/
static final int MAX_FIX_ARRAY = 0xFFFFFF9F;
/**
* Min fixed string - up to length 31.
*/
static final int MIN_FIX_STR = 0xFFFFFFA0;
/**
* Max fixed string.
*/
static final int MAX_FIX_STR = 0xFFFFFFBF;
/**
* Nil.
*/
static final int NIL = 0xFFFFFFC0;
/**
* False.
*/
static final int FALSE = 0xFFFFFFC2;
/**
* True.
*/
static final int TRUE = 0xFFFFFFC3;
/**
* Binary - up to length 255.
*/
static final int BIN_8 = 0xFFFFFFC4;
/**
* Binary - up to length (2^16)-1.
*/
static final int BIN_16 = 0xFFFFFFC5;
/**
* Binary - up to length (2^32)-1.
*/
static final int BIN_32 = 0xFFFFFFC6;
/**
* Extension - up to length 255.
*/
static final int EXT_8 = 0xFFFFFFC7;
/**
* Extension - up to length (2^16)-1.
*/
static final int EXT_16 = 0xFFFFFFC8;
/**
* Extension - up to length (2^32)-1.
*/
static final int EXT_32 = 0xFFFFFFC9;
/**
* Float - 4 bytes.
*/
static final int FLOAT_32 = 0xFFFFFFCA;
/**
* Double - 8 bytes.
*/
static final int FLOAT_64 = 0xFFFFFFCB;
/**
* Int (unsigned) - up to 1 byte.
*/
static final int UINT_8 = 0xFFFFFFCC;
/**
* Int (unsigned) - up to 2 bytes.
*/
static final int UINT_16 = 0xFFFFFFCD;
/**
* Int (unsigned) - up to 4 bytes.
*/
static final int UINT_32 = 0xFFFFFFCE;
/**
* Int (unsigned) - up to 8 bytes.
*/
static final int UINT_64 = 0xFFFFFFCF;
/**
* Int (signed) - up to 1 byte.
*/
static final int SINT_8 = 0xFFFFFFD0;
/**
* Int (signed) - up to 2 bytes.
*/
static final int SINT_16 = 0xFFFFFFD1;
/**
* Int (signed) - up to 4 bytes.
*/
static final int SINT_32 = 0xFFFFFFD2;
/**
* Int (signed) - up to 8 bytes.
*/
static final int SINT_64 = 0xFFFFFFD3;
/**
* Fixed extension - 1 byte.
*/
static final int FIX_EXT_1 = 0xFFFFFFD4;
/**
* Fixed extension - 2 bytes.
*/
static final int FIX_EXT_2 = 0xFFFFFFD5;
/**
* Fixed extension - 4 bytes.
*/
static final int FIX_EXT_4 = 0xFFFFFFD6;
/**
* Fixed extension - 8 bytes.
*/
static final int FIX_EXT_8 = 0xFFFFFFD7;
/**
* Fixed extension - 16 bytes.
*/
static final int FIX_EXT_16 = 0xFFFFFFD8;
/**
* String - up to length 255.
*/
static final int STR_8 = 0xFFFFFFD9;
/**
* String - up to length (2^16)-1.
*/
static final int STR_16 = 0xFFFFFFDA;
/**
* String - up to length (2^32)-1.
*/
static final int STR_32 = 0xFFFFFFDB;
/**
* Array - up to length (2^16)-1.
*/
static final int ARRAY_16 = 0xFFFFFFDC;
/**
* Array - up to length (2^32)-1.
*/
static final int ARRAY_32 = 0xFFFFFFDD;
/**
* Map - up to length (2^16)-1.
*/
static final int MAP_16 = 0xFFFFFFDE;
/**
* Map - up to length (2^32)-1.
*/
static final int MAP_32 = 0xFFFFFFDF;
/**
* Extension type code for a Joda-Bean bean-type.
*/
static final int JODA_TYPE_BEAN = 32;
/**
* Extension type code for a Joda-Bean simple-type.
*/
static final int JODA_TYPE_DATA = 33;
/**
* Extension type code for a Joda-Bean meta-type.
*/
static final int JODA_TYPE_META = 34;
/**
* Extension type code for a Joda-Bean serialized reference.
*/
static final int JODA_TYPE_REF_KEY = 35;
/**
* Extension type code for a reference to a previously serialized Joda-Bean.
*/
static final int JODA_TYPE_REF = 36;
//-----------------------------------------------------------------------
/**
* Converts a byte to a hex string for debugging.
*
* @param b the byte
* @return the two character hex equivalent, not null
*/
static String toHex(int b) {
return String.format("%02X", (byte) b);
}
static boolean isMap(int typeByte) throws IOException {
return (typeByte >= MIN_FIX_MAP && typeByte <= MAX_FIX_MAP) || typeByte == MAP_16 || typeByte == MAP_32;
}
static boolean isArray(int typeByte) throws IOException {
return (typeByte >= MIN_FIX_ARRAY && typeByte <= MAX_FIX_ARRAY) || typeByte == ARRAY_16 || typeByte == ARRAY_32;
}
static boolean isString(int typeByte) throws IOException {
return (typeByte >= MIN_FIX_STR && typeByte <= MAX_FIX_STR) || typeByte == STR_8 || typeByte == STR_16 || typeByte == STR_32;
}
static boolean isIntegral(int typeByte) throws IOException {
return (typeByte >= MIN_FIX_INT && typeByte <= MAX_FIX_INT) ||
typeByte == UINT_8 || typeByte == UINT_16 || typeByte == UINT_32 || typeByte == UINT_64 ||
typeByte == SINT_8 || typeByte == SINT_16 || typeByte == SINT_32 || typeByte == SINT_64;
}
}