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Fast, efficient Java serialization. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
/* Copyright (c) 2008, Nathan Sweet
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of Esoteric Software nor the names of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
package com.esotericsoftware.kryo.util;
import static com.esotericsoftware.minlog.Log.*;
/** A few utility methods, mostly for private use.
* @author Nathan Sweet */
public class Util {
static public boolean isAndroid;
static {
try {
Class.forName("android.os.Process");
isAndroid = true;
} catch (Exception ignored) {
}
}
/** Returns the primitive wrapper class for a primitive class.
* @param type Must be a primitive class. */
static public Class getWrapperClass (Class type) {
if (type == int.class)
return Integer.class;
else if (type == float.class)
return Float.class;
else if (type == boolean.class)
return Boolean.class;
else if (type == long.class)
return Long.class;
else if (type == byte.class)
return Byte.class;
else if (type == char.class)
return Character.class;
else if (type == short.class) //
return Short.class;
else if (type == double.class)
return Double.class;
return Void.class;
}
/** Returns the primitive class for a primitive wrapper class. Otherwise returns the type parameter.
* @param type Must be a wrapper class. */
static public Class getPrimitiveClass (Class type) {
if (type == Integer.class)
return int.class;
else if (type == Float.class)
return float.class;
else if (type == Boolean.class)
return boolean.class;
else if (type == Long.class)
return long.class;
else if (type == Byte.class)
return byte.class;
else if (type == Character.class)
return char.class;
else if (type == Short.class) //
return short.class;
else if (type == Double.class) //
return double.class;
else if (type == Void.class)
return void.class;
return type;
}
static public boolean isWrapperClass (Class type) {
return type == Integer.class || type == Float.class || type == Boolean.class || type == Long.class || type == Byte.class
|| type == Character.class || type == Short.class || type == Double.class;
}
/** Logs a message about an object. The log level and the string format of the object depend on the object type. */
static public void log (String message, Object object) {
if (object == null) {
if (TRACE) trace("kryo", message + ": null");
return;
}
Class type = object.getClass();
if (type.isPrimitive() || type == Boolean.class || type == Byte.class || type == Character.class || type == Short.class
|| type == Integer.class || type == Long.class || type == Float.class || type == Double.class || type == String.class) {
if (TRACE) trace("kryo", message + ": " + string(object));
} else {
debug("kryo", message + ": " + string(object));
}
}
/** Returns the object formatted as a string. The format depends on the object's type and whether {@link Object#toString()} has
* been overridden. */
static public String string (Object object) {
if (object == null) return "null";
Class type = object.getClass();
if (type.isArray()) return className(type);
try {
if (type.getMethod("toString", new Class[0]).getDeclaringClass() == Object.class)
return TRACE ? className(type) : type.getSimpleName();
} catch (Exception ignored) {
}
try {
return String.valueOf(object);
} catch(Throwable e) {
return (TRACE ? className(type) : type.getSimpleName()) + "(Exception " + e + " in toString)";
}
}
/** Returns the class formatted as a string. The format varies depending on the type. */
static public String className (Class type) {
if (type.isArray()) {
Class elementClass = getElementClass(type);
StringBuilder buffer = new StringBuilder(16);
for (int i = 0, n = getDimensionCount(type); i < n; i++)
buffer.append("[]");
return className(elementClass) + buffer;
}
if (type.isPrimitive() || type == Object.class || type == Boolean.class || type == Byte.class || type == Character.class
|| type == Short.class || type == Integer.class || type == Long.class || type == Float.class || type == Double.class
|| type == String.class) {
return type.getSimpleName();
}
return type.getName();
}
/** Returns the number of dimensions of an array. */
static public int getDimensionCount (Class arrayClass) {
int depth = 0;
Class nextClass = arrayClass.getComponentType();
while (nextClass != null) {
depth++;
nextClass = nextClass.getComponentType();
}
return depth;
}
/** Returns the base element type of an n-dimensional array class. */
static public Class getElementClass (Class arrayClass) {
Class elementClass = arrayClass;
while (elementClass.getComponentType() != null)
elementClass = elementClass.getComponentType();
return elementClass;
}
/** Converts an "int" value between endian systems. */
static public int swapInt(int i) {
return ((i & 0xFF) << 24) |
((i & 0xFF00) << 8) |
((i & 0xFF0000) >> 8)|
((i >> 24) & 0xFF);
}
/** Converts a "long" value between endian systems. */
static public long swapLong(long value) {
return
( ( ( value >> 0 ) & 0xff ) << 56 )|
( ( ( value >> 8 ) & 0xff ) << 48 )|
( ( ( value >> 16 ) & 0xff ) << 40 )|
( ( ( value >> 24 ) & 0xff ) << 32 )|
( ( ( value >> 32 ) & 0xff ) << 24 )|
( ( ( value >> 40 ) & 0xff ) << 16 )|
( ( ( value >> 48 ) & 0xff ) << 8 )|
( ( ( value >> 56 ) & 0xff ) << 0 );
}
}
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