xref: /external/smali/dexlib2/src/main/java/org/jf/dexlib2/immutable/util/CharSequenceConverter.java

/*
 * Copyright 2012, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.dexlib2.immutable.util;

import com.google.common.collect.ImmutableList;
import org.jf.util.ImmutableConverter;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public final class CharSequenceConverter {
    private CharSequenceConverter() {
    }

    @Nonnull
    public static ImmutableList<String> immutableStringList(@Nullable Iterable<? extends CharSequence> iterable) {
        return CONVERTER.toList(iterable);
    }

    private static final ImmutableConverter<String, CharSequence> CONVERTER =
            new ImmutableConverter<String, CharSequence>() {
                @Override
                protected boolean isImmutable(@Nonnull CharSequence item) {
                    return item instanceof String;
                }

                @Nonnull
                @Override
                protected String makeImmutable(@Nonnull CharSequence item) {
                    return item.toString();
                }
            };
}