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/*
 * Copyright 2018 the original author or authors.
 *
 * 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 org.glowroot.agent;

import java.io.File;
import java.io.IOException;

import org.glowroot.agent.shaded.org.checkerframework.checker.nullness.qual.EnsuresNonNull;

// only for use before it is safe to use guava
class NotGuava {

    private NotGuava() {}

    static File mkdirs(File dir) throws IOException {
        dir.mkdirs();
        if (!dir.isDirectory()) {
            throw new IOException("Could not create directory: " + dir.getAbsolutePath());
        }
        return dir;
    }

    @EnsuresNonNull("#1")
    static  /*@NonNull*/ T checkNotNull(T reference) {
        if (reference == null) {
            throw new NullPointerException();
        }
        return reference;
    }
}




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