dexlib2/src/main/java/org/jf/dexlib2/writer/pool/StringPool.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,
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 */

package org.jf.dexlib2.writer.pool;

import org.jf.dexlib2.iface.reference.StringReference;
import org.jf.dexlib2.writer.StringSection;
import org.jf.util.ExceptionWithContext;

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

public class StringPool extends StringTypeBasePool implements StringSection<CharSequence, StringReference> {
    public void intern(@Nonnull CharSequence string) {
        internedItems.put(string.toString(), 0);
    }

    public void internNullable(@Nullable CharSequence string) {
        if (string != null) {
            intern(string);
        }
    }

    @Override public int getItemIndex(@Nonnull StringReference key) {
        Integer index = internedItems.get(key.toString());
        if (index == null) {
            throw new ExceptionWithContext("Item not found.: %s", key.toString());
        }
        return index;
    }

    @Override public boolean hasJumboIndexes() {
        return internedItems.size() > 65536;
    }
}