DexFileClassMap.java

/*
 * [The "BSD licence"]
 * Copyright (c) 2011 Ben Gruver
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.dexlib.Code.Analysis;

import org.jf.dexlib.ClassDefItem;
import org.jf.dexlib.DexFile;
import org.jf.dexlib.TypeIdItem;

import java.util.HashMap;

/**
 * Keeps a simple map of classes defined in a dex file, allowing you to look them up by TypeIdItem or name
 */
public class DexFileClassMap {
    private final HashMap<String, ClassDefItem> definedClasses = new HashMap<String, ClassDefItem>();

    public DexFileClassMap(DexFile dexFile) {
        for (ClassDefItem classDefItem: dexFile.ClassDefsSection.getItems()) {
            definedClasses.put(classDefItem.getClassType().getTypeDescriptor(), classDefItem);
        }
    }

    public ClassDefItem getClassDefByName(String typeName) {
        return definedClasses.get(typeName);
    }

    public ClassDefItem getClassDefByType(TypeIdItem typeIdItem) {
        return definedClasses.get(typeIdItem.getTypeDescriptor());
    }
}