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/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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.android.systemui.util;

import android.os.Looper;

import com.android.internal.annotations.VisibleForTesting;

/**
 * Helper providing common assertions.
 */
public class Assert {

    @VisibleForTesting
    public static Looper sMainLooper = Looper.getMainLooper();

    public static void isMainThread() {
        if (!sMainLooper.isCurrentThread()) {
            throw new IllegalStateException("should be called from the main thread.");
        }
    }

    public static void isNotMainThread() {
        if (sMainLooper.isCurrentThread()) {
            throw new IllegalStateException("should not be called from the main thread.");
        }
    }
}