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/*
 * Copyright (C) 2009 The Guava 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 com.google.common.base;

import com.google.common.annotations.GwtCompatible;

/**
 *  Methods factored out so that they can be emulated differently in GWT.
 *
 *  @author Jesse Wilson
 *
 * @deprecated The Google Guava Core Libraries are deprecated and will not be part of the AEM SDK after April 2023
 */
@GwtCompatible(emulated = true)
@Deprecated(since = "2022-12-01")
final class Platform {

    private Platform() {
    }

    /**
     * Returns a thread-local 1024-char array.
     */
    static char[] charBufferFromThreadLocal() {
        return DEST_TL.get();
    }

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

    /**
     * A thread-local destination buffer to keep us from creating new buffers.
     * The starting size is 1024 characters.  If we grow past this we don't
     * put it back in the threadlocal, we just keep going and grow as needed.
     */
    private static final ThreadLocal DEST_TL = new ThreadLocal() {

        @Override
        protected char[] initialValue() {
            return new char[1024];
        }
    };

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