package it.unimi.dsi.fastutil.bytes;
import java.util.Comparator;
public final class ByteComparators {
private ByteComparators() {
}
protected static class NaturalImplicitComparator implements ByteComparator, java.io.Serializable {
private static final long serialVersionUID = 1L;
@Override
public final int compare(final byte a, final byte b) {
return (Byte.compare((a), (b)));
}
@Override
public ByteComparator reversed() {
return OPPOSITE_COMPARATOR;
}
private Object readResolve() {
return NATURAL_COMPARATOR;
}
};
public static final ByteComparator NATURAL_COMPARATOR = new NaturalImplicitComparator();
protected static class OppositeImplicitComparator implements ByteComparator, java.io.Serializable {
private static final long serialVersionUID = 1L;
@Override
public final int compare(final byte a, final byte b) {
return -(Byte.compare((a), (b)));
}
@Override
public ByteComparator reversed() {
return NATURAL_COMPARATOR;
}
private Object readResolve() {
return OPPOSITE_COMPARATOR;
}
};
public static final ByteComparator OPPOSITE_COMPARATOR = new OppositeImplicitComparator();
protected static class OppositeComparator implements ByteComparator, java.io.Serializable {
private static final long serialVersionUID = 1L;
final ByteComparator comparator;
protected OppositeComparator(final ByteComparator c) {
comparator = c;
}
@Override
public final int compare(final byte a, final byte b) {
return comparator.compare(b, a);
}
@Override
public final ByteComparator reversed() {
return comparator;
}
};
public static ByteComparator oppositeComparator(final ByteComparator c) {
if (c instanceof OppositeComparator)
return ((OppositeComparator) c).comparator;
return new OppositeComparator(c);
}
public static ByteComparator asByteComparator(final Comparator<? super Byte> c) {
if (c == null || c instanceof ByteComparator)
return (ByteComparator) c;
return new ByteComparator() {
@Override
public int compare(byte x, byte y) {
return c.compare(Byte.valueOf(x), Byte.valueOf(y));
}
@SuppressWarnings("deprecation")
@Override
public int compare(Byte x, Byte y) {
return c.compare(x, y);
}
};
}
}