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A re-usable library of Java classes. Originally stand-alone, many of the classes have since gone into various parts of the Jakarta Commons project, and thus this package contains various dependencies.
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/*
 * Copyright (c) 2003, Henri Yandell
 * 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 Genjava-Core 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.
 */
// hacked out of org.cyberiantiger's lovely class object model
package com.generationjava.lang;

import org.apache.commons.lang.StringUtils;

import java.util.*;
import java.io.*;

/**
 * A cut down copy of org.cyberiantiger's class object model.
 * It provides a List of all the classes that a class file immediately
 * depends on.
 */
public class ClassConstantsReflector {

	static public void main(String[] args) throws Throwable {
		ClassConstantsReflector c = new ClassConstantsReflector();
        for(int i=0; i= constantPool.size() ||
		   super_class == 0 || super_class >= constantPool.size() ) {
			throw new RuntimeException("Invalid Constant Pool Reference");
		}

		Object ob = constantPool.get(this_class);
		if(!(ob instanceof C7) ) {
			throw new RuntimeException("Wrong type of object at reference in constant pool");
		}
		thisClass = (C7) ob;
		ob = constantPool.get(super_class);
		if(!(ob instanceof C7) ) {
			throw new RuntimeException("Wrong type of object at reference in constant pool");
		}
		superClass = (C7) ob;
	}

	class C1 {
		String value;
		C1() {}
		C1(String value) {
			this.value = value;
		}
		public byte getType() { return UTF8; }
		public String getValue() { return value; }
		public void readFrom(DataInputStream in) throws IOException {
			value = in.readUTF();
		}
		public boolean equals(Object obj) {
			return (obj instanceof C1) && ((C1)obj).value.equals(value);
		}
		public int hashCode() { return value.hashCode(); }
		public String toString() { return value; }
	}

	class C7 {
		int index;
		C1 name;
		public byte getType() { return CLASS; }
		public C1 getClassName() { return name; }
		public void readFrom(DataInputStream in) throws IOException {
			index = in.readUnsignedShort();
		}
		public void resolve() {
			if(index == 0) {
				throw new RuntimeException("Invalid Constant Pool Reference: "+index);
			}
            if(index >= constantPool.size()) {
				throw new RuntimeException("Invalid Constant Pool Reference: "+index+"/"+constantPool.size());
			}
			Object ob = constantPool.get(index);
			if( !(ob instanceof C1) ) {
				throw new RuntimeException("Wrong type of object at reference in constant pool");
			}
			name = (C1) ob;
		}
		public boolean equals(Object obj) {
			return (obj instanceof C7) && ((C7)obj).name.equals(name);
		}
		public int hashCode() { return name.hashCode(); }
		public String toString() { return name.toString().replace('/','.');}
	}

}