xref: /frameworks/support/compat/src/main/java/androidx/core/util/DebugUtils.java

/*
 * Copyright (C) 2011 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 android.support.v4.util;

import android.support.annotation.RestrictTo;

import static android.support.annotation.RestrictTo.Scope.GROUP_ID;

/**
 * Helper for accessing features in {@link android.util.DebugUtils}
 * introduced after API level 4 in a backwards compatible fashion.
 *
 * @hide
 */
@RestrictTo(GROUP_ID)
public class DebugUtils {

    public static void buildShortClassTag(Object cls, StringBuilder out) {
        if (cls == null) {
            out.append("null");
        } else {
            String simpleName = cls.getClass().getSimpleName();
            if (simpleName == null || simpleName.length() <= 0) {
                simpleName = cls.getClass().getName();
                int end = simpleName.lastIndexOf('.');
                if (end > 0) {
                    simpleName = simpleName.substring(end+1);
                }
            }
            out.append(simpleName);
            out.append('{');
            out.append(Integer.toHexString(System.identityHashCode(cls)));
        }
    }
}