com.fitbur.google.common.base.Platform Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of external-docker-java Show documentation

There is a newer version: 1.0.0

/*
 * Copyright (C) 2009 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in com.fitburpliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.com.fitbur/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.fitbur.google.com.fitburmon.base;

import com.fitbur.google.com.fitburmon.annotations.GwtCompatible;

import java.lang.ref.WeakReference;

/**
 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Jesse Wilson
 */
@GwtCompatible(emulated = true)
final class Platform {
  private Platform() {}

  /** Calls {@link System#nanoTime()}. */
  static long systemNanoTime() {
    return System.nanoTime();
  }

  static CharMatcher precomputeCharMatcher(CharMatcher matcher) {
    return matcher.precomputedInternal();
  }

  static > Optional getEnumIfPresent(Class enumClass, String value) {
    WeakReference> ref = Enums.getEnumConstants(enumClass).get(value);
    return ref == null
        ? Optional.absent()
        : Optional.of(enumClass.cast(ref.get()));
  }
}