Twidere-App-Android-Twitter.../twidere.component.common/src/main/java/org/mariotaku/twidere/util/Nullables.java

48 lines
1.4 KiB
Java

/*
* Twidere - Twitter client for Android
*
* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mariotaku.twidere.util;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import java.util.Collections;
import java.util.List;
/**
* Created by mariotaku on 15/11/25.
*/
public class Nullables {
private Nullables() {
}
@NonNull
public static <T> List<T> list(@Nullable List<T> list) {
if (list == null) return Collections.emptyList();
return list;
}
@NonNull
public static <T> T assertNonNull(@Nullable T object) {
if (object == null) throw new NullPointerException();
return object;
}
}