Preconditions.java

/*
 * Copyright 2016 Jacek Marchwicki <jacek.marchwicki@gmail.com>
 *
 * 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.appunite.rx.android.internal;

import android.os.Looper;

public final class Preconditions {
    public static void checkArgument(boolean assertion, String message) {
        if (!assertion) {
            throw new IllegalArgumentException(message);
        }
    }

    public static void checkUiThread() {
        if (Looper.getMainLooper() != Looper.myLooper()) {
            throw new IllegalStateException(
                    "Must be called from the main thread. Was: " + Thread.currentThread());
        }
    }

    private Preconditions() {
        throw new AssertionError("No instances.");
    }
}