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Implement dumb Comparable in Sha256Hash.

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Matt Corallo 2013-05-22 14:03:47 +02:00 committed by Mike Hearn
parent 6cdfad43a3
commit 28292b45a5
1 changed files with 9 additions and 1 deletions
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10
core/src/main/java/com/google/bitcoin/core/Sha256Hash.java
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@ -34,7 +34,7 @@ import static com.google.common.base.Preconditions.checkArgument;
* A Sha256Hash just wraps a byte[] so that equals and hashcode work correctly, allowing it to be used as keys in a
* map. It also checks that the length is correct and provides a bit more type safety.
*/
public class Sha256Hash implements Serializable {
public class Sha256Hash implements Serializable, Comparable {
private byte[] bytes;
public static final Sha256Hash ZERO_HASH = new Sha256Hash(new byte[32]);
@ -127,4 +127,12 @@ public class Sha256Hash implements Serializable {
public Sha256Hash duplicate() {
return new Sha256Hash(bytes);
}
@Override
public int compareTo(Object o) {
checkArgument(o instanceof Sha256Hash);
int thisCode = this.hashCode();
int oCode = ((Sha256Hash)o).hashCode();
return thisCode > oCode ? 1 : (thisCode == oCode ? 0 : -1);
}
}