com.github.rinde.rinsim.util.TimeWindow Maven / Gradle / Ivy
/*
* Copyright (C) 2011-2016 Rinde van Lon, iMinds-DistriNet, KU Leuven
*
* 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.github.rinde.rinsim.util;
import static com.google.common.base.Preconditions.checkArgument;
import java.io.Serializable;
import com.google.auto.value.AutoValue;
/**
* A time window is an interval in time. It is defined as a half open interval:
* [begin, end).
* @author Rinde van Lon
*/
@AutoValue
public abstract class TimeWindow implements Serializable {
private static final long serialVersionUID = -5186749588224283755L;
private static final TimeWindow ALWAYS = TimeWindow.create(0, Long.MAX_VALUE);
TimeWindow() {}
/**
* @return Begin of the time window (inclusive). Must be a non-negative value.
*/
public abstract long begin();
/**
* @return End of the time window (exclusive).
*/
public abstract long end();
/**
* @param time The time to check.
* @return true when time is in [{@link #begin},
* {@link #end}), false otherwise.
*/
public boolean isIn(long time) {
return isAfterStart(time) && isBeforeEnd(time);
}
/**
* @param time The time to check.
* @return true when time >= {@link #begin},
* false otherwise.
*/
public boolean isAfterStart(long time) {
return time >= begin();
}
/**
* @param time The time to check.
* @return true when time < {@link #end},
* false otherwise.
*/
public boolean isBeforeEnd(long time) {
return time < end();
}
/**
* @param time The time to check.
* @return true when time < {@link #begin},
* false otherwise.
*/
public boolean isBeforeStart(long time) {
return time < begin();
}
/**
* @param time The time to check.
* @return true when time >= {@link #end},
* false otherwise.
*/
public boolean isAfterEnd(long time) {
return time >= end();
}
/**
* @return The length of the time window: {@link #end} -
* {@link #begin}.
*/
public long length() {
return end() - begin();
}
/**
* Create a new time window [begin, end).
* @param begin {@link #begin()}.
* @param end {@link #end()}.
* @return A new time window instance.
*/
public static TimeWindow create(long begin, long end) {
checkArgument(begin >= 0, "Time must be non-negative.");
checkArgument(begin <= end, "Begin (%s) can not be later than end (%s).",
begin, end);
return new AutoValue_TimeWindow(begin, end);
}
/**
* @return A time window which represents 'always'.
*/
public static TimeWindow always() {
return ALWAYS;
}
}