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Selenium automates browsers. That's it! What you do with that power is entirely up to you.
// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The SFC licenses this file
// to you 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 org.openqa.selenium.internal;
import java.util.Collections;
import java.util.Iterator;
import java.util.function.Function;
import java.util.stream.Stream;
public class Either implements Iterable {
private final A left;
private final B right;
private Either(A a, B b) {
left = a;
right = b;
}
public static Either left(A a) {
return new Either<>(a, null);
}
public static Either right(B b) {
return new Either<>(null, b);
}
public boolean isLeft() {
return left != null;
}
public boolean isRight() {
return right != null;
}
public A left() {
return left;
}
public B right() {
return right;
}
public R map(Function mapper) {
Require.nonNull("Mapper", mapper);
return mapper.apply(right());
}
public R mapLeft(Function mapper) {
Require.nonNull("Mapper", mapper);
return mapper.apply(left());
}
@Override
public Iterator iterator() {
return Collections.singleton(right()).iterator();
}
public Stream stream() {
return Stream.of(right());
}
@Override
public String toString() {
return "[Either(" + (isLeft() ? "left" : "right") + "): " + (isLeft() ? left() : right()) + "]";
}
}