UInt64.java Source code

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Here is the source code for UInt64.java

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/*
 * D-Bus Java Implementation Copyright (c) 2005-2006 Matthew Johnson This
 * program is free software; you can redistribute it and/or modify it under the
 * terms of either the GNU Lesser General Public License Version 2 or the
 * Academic Free Licence Version 2.1. Full licence texts are included in the
 * COPYING file with this program.
 */
//package org.freedesktop.dbus;

//import static org.freedesktop.dbus.Gettext._;

import java.math.BigInteger;
import java.text.MessageFormat;

/**
 * Class to represent unsigned 64-bit numbers. Warning: Any functions which take
 * or return a <tt>long</tt> are restricted to the range of a signed 64bit
 * number. Use the BigInteger methods if you wish access to the full range.
 */
@SuppressWarnings("serial")
public class UInt64 extends Number implements Comparable<UInt64> {
    /** Maximum allowed value (when accessed as a BigInteger) */
    public static final BigInteger MAX_BIG_VALUE = new BigInteger("18446744073709551615");
    /** Maximum allowed value (when accessed as a long) */
    public static final long MAX_LONG_VALUE = Long.MAX_VALUE;
    /** Minimum allowed value */
    public static final long MIN_VALUE = 0;
    private long bottom;
    private long top;
    private BigInteger value;

    /**
     * Create a UInt64 from a BigInteger
     * 
     * @param value
     *          Must be a valid BigInteger between MIN_VALUE&ndash;MAX_BIG_VALUE
     * @throws NumberFormatException
     *           if value is not an integer between MIN_VALUE and MAX_BIG_VALUE
     */
    public UInt64(BigInteger value) {
        /*    if (null == value) { throw new NumberFormatException(MessageFormat.format(_("{0} is not between {1} and {2}."), new Object[] {
                value, MIN_VALUE, MAX_BIG_VALUE })); }
            if (0 > value.compareTo(BigInteger.ZERO)) { throw new NumberFormatException(MessageFormat.format(
                _("{0} is not between {1} and {2}."), new Object[] { value, MIN_VALUE, MAX_BIG_VALUE })); }
            if (0 < value.compareTo(MAX_BIG_VALUE)) { throw new NumberFormatException(MessageFormat.format(
                _("{0} is not between {1} and {2}."), new Object[] { value, MIN_VALUE, MAX_BIG_VALUE })); }
          */ this.value = value;
        top = this.value.shiftRight(32).and(new BigInteger("4294967295")).longValue();
        bottom = this.value.and(new BigInteger("4294967295")).longValue();
    }

    /**
     * Create a UInt64 from a long.
     * 
     * @param value
     *          Must be a valid integer within MIN_VALUE&ndash;MAX_VALUE
     * @throws NumberFormatException
     *           if value is not between MIN_VALUE and MAX_VALUE
     */
    public UInt64(long value) {
        //if ((value < MIN_VALUE) || (value > MAX_LONG_VALUE)) { throw new NumberFormatException(MessageFormat.format(
        //   _("{0} is not between {1} and {2}."), new Object[] { value, MIN_VALUE, MAX_LONG_VALUE })); }
        this.value = new BigInteger("" + value);
        top = this.value.shiftRight(32).and(new BigInteger("4294967295")).longValue();
        bottom = this.value.and(new BigInteger("4294967295")).longValue();
    }

    /**
     * Create a UInt64 from two longs.
     * 
     * @param top
     *          Most significant 4 bytes.
     * @param bottom
     *          Least significant 4 bytes.
     */
    public UInt64(long top, long bottom) {
        BigInteger a = new BigInteger("" + top);
        a = a.shiftLeft(32);
        a = a.add(new BigInteger("" + bottom));
        // if (0 > a.compareTo(BigInteger.ZERO)) { throw new NumberFormatException(MessageFormat.format(
        //    _("{0} is not between {1} and {2}."), new Object[] { a, MIN_VALUE, MAX_BIG_VALUE })); }
        //if (0 < a.compareTo(MAX_BIG_VALUE)) { throw new NumberFormatException(MessageFormat.format(
        //   _("{0} is not between {1} and {2}."), new Object[] { a, MIN_VALUE, MAX_BIG_VALUE })); }
        value = a;
        this.top = top;
        this.bottom = bottom;
    }

    /**
     * Create a UInt64 from a String.
     * 
     * @param value
     *          Must parse to a valid integer within MIN_VALUE&ndash;MAX_BIG_VALUE
     * @throws NumberFormatException
     *           if value is not an integer between MIN_VALUE and MAX_BIG_VALUE
     */
    public UInt64(String value) {
        //if (null == value) { throw new NumberFormatException(MessageFormat.format(_("{0} is not between {1} and {2}."), new Object[] {
        //  value, MIN_VALUE, MAX_BIG_VALUE })); }
        BigInteger a = new BigInteger(value);
        this.value = a;
        top = this.value.shiftRight(32).and(new BigInteger("4294967295")).longValue();
        bottom = this.value.and(new BigInteger("4294967295")).longValue();
    }

    /**
     * Least significant 4 bytes.
     */
    public long bottom() {
        return bottom;
    }

    /** The value of this as a byte. */
    @Override
    public byte byteValue() {
        return value.byteValue();
    }

    /**
     * Compare two UInt32s.
     * 
     * @return 0 if equal, -ve or +ve if they are different.
     */
    public int compareTo(UInt64 other) {
        return value.compareTo(other.value);
    }

    /** The value of this as a double. */
    @Override
    public double doubleValue() {
        return value.doubleValue();
    }

    /** Test two UInt64s for equality. */
    @Override
    public boolean equals(Object o) {
        return (o instanceof UInt64) && value.equals(((UInt64) o).value);
    }

    /** The value of this as a float. */
    @Override
    public float floatValue() {
        return value.floatValue();
    }

    @Override
    public int hashCode() {
        return value.hashCode();
    }

    /** The value of this as a int. */
    @Override
    public int intValue() {
        return value.intValue();
    }

    /** The value of this as a long. */
    @Override
    public long longValue() {
        return value.longValue();
    }

    /** The value of this as a short. */
    @Override
    public short shortValue() {
        return value.shortValue();
    }

    /**
     * Most significant 4 bytes.
     */
    public long top() {
        return top;
    }

    /** The value of this as a string. */
    @Override
    public String toString() {
        return value.toString();
    }

    /** The value of this as a BigInteger. */
    public BigInteger value() {
        return value;
    }
}