/*
* Copyright (C) 2011 The Guava Authors
*
* 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.common.collect;
import com.google.common.annotations.GwtCompatible;
/**
* Indicates whether an endpoint of some range is contained in the range itself ("closed") or not
* ("open"). If a range is unbounded on a side, it is neither open nor closed on that side; the
* bound simply does not exist.
*
* @since 10.0
*/
@GwtCompatible
public enum BoundType {
/**
* The endpoint value <i>is not</i> considered part of the set ("exclusive").
*/
OPEN {
@Override
BoundType flip() {
return CLOSED;
}
},
/**
* The endpoint value <i>is</i> considered part of the set ("inclusive").
*/
CLOSED {
@Override
BoundType flip() {
return OPEN;
}
};
/**
* Returns the bound type corresponding to a boolean value for inclusivity.
*/
static BoundType forBoolean(boolean inclusive) {
return inclusive ? CLOSED : OPEN;
}
abstract BoundType flip();
}