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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.intellij.openapi.vcs.history;
public interface VcsRevisionNumber extends Comparable<VcsRevisionNumber>{
VcsRevisionNumber NULL = new VcsRevisionNumber() {
@Override public String asString() {
return "";
}
@Override public int compareTo(VcsRevisionNumber vcsRevisionNumber) {
return 0;
}
@Override public String toString() {
return "NULL";
}
};
class Int implements VcsRevisionNumber, LongRevisionNumber {
private final int myValue;
public Int(int value) {
myValue = value;
}
@Override
public long getLongRevisionNumber() {
return myValue;
}
public String asString() {
return String.valueOf(myValue);
}
public int compareTo(VcsRevisionNumber vcsRevisionNumber) {
if (vcsRevisionNumber instanceof VcsRevisionNumber.Int){
return myValue - ((Int)vcsRevisionNumber).myValue;
}
return 0;
}
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final Int anInt = (Int)o;
if (myValue != anInt.myValue) return false;
return true;
}
public int hashCode() {
return myValue;
}
public int getValue() {
return myValue;
}
@Override
public String toString() {
return asString();
}
}
class Long implements VcsRevisionNumber, LongRevisionNumber {
private final long myValue;
public Long(long value) {
myValue = value;
}
@Override
public long getLongRevisionNumber() {
return myValue;
}
public String asString() {
return String.valueOf(myValue);
}
public int compareTo(VcsRevisionNumber vcsRevisionNumber) {
if (vcsRevisionNumber instanceof VcsRevisionNumber.Long){
return java.lang.Long.signum(myValue - ((Long)vcsRevisionNumber).myValue);
}
return 0;
}
public long getLongValue() {
return myValue;
}
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final Long aLong = (Long)o;
if (myValue != aLong.myValue) return false;
return true;
}
public int hashCode() {
return (int)(myValue ^ (myValue >>> 32));
}
public String toString() {
return asString();
}
}
String asString();
}
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