blob: 5691513c6964c0ac6524ded5b7fff8cafa38cd97 [file] [log] [blame]
// Copyright 2014 Google Inc. All rights reserved.
//
// 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 com.google.devtools.build.skyframe;
import java.io.Serializable;
/**
* Versioning scheme based on integers.
*/
public final class IntVersion implements Version, Serializable {
private final long val;
public IntVersion(long val) {
this.val = val;
}
public long getVal() {
return val;
}
public IntVersion next() {
return new IntVersion(val + 1);
}
@Override
public boolean atMost(Version other) {
if (!(other instanceof IntVersion)) {
return false;
}
return val <= ((IntVersion) other).val;
}
@Override
public int hashCode() {
return Long.valueOf(val).hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj instanceof IntVersion) {
IntVersion other = (IntVersion) obj;
return other.val == val;
}
return false;
}
@Override
public String toString() {
return "IntVersion: " + val;
}
}