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/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999-2004 Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package javassist.bytecode;
import java.io.DataInputStream;
import java.util.Map;
import java.io.IOException;
/**
* <code>InnerClasses_attribute</code>.
*/
public class InnerClassesAttribute extends AttributeInfo {
/**
* The name of this attribute <code>"InnerClasses"</code>.
*/
public static final String tag = "InnerClasses";
InnerClassesAttribute(ConstPool cp, int n, DataInputStream in)
throws IOException
{
super(cp, n, in);
}
private InnerClassesAttribute(ConstPool cp, byte[] info) {
super(cp, tag, info);
}
/**
* Returns <code>number_of_classes</code>.
*/
public int tableLength() { return ByteArray.readU16bit(get(), 0); }
/**
* Returns <code>classes[nth].inner_class_info_index</code>.
*/
public int innerClassIndex(int nth) {
return ByteArray.readU16bit(get(), nth * 8 + 2);
}
/**
* Returns the class name indicated
* by <code>classes[nth].inner_class_info_index</code>.
*
* @return null or the class name.
*/
public String innerClass(int nth) {
int i = innerClassIndex(nth);
if (i == 0)
return null;
else
return constPool.getClassInfo(i);
}
/**
* Returns <code>classes[nth].outer_class_info_index</code>.
*/
public int outerClassIndex(int nth) {
return ByteArray.readU16bit(get(), nth * 8 + 4);
}
/**
* Returns the class name indicated
* by <code>classes[nth].outer_class_info_index</code>.
*
* @return null or the class name.
*/
public String outerClass(int nth) {
int i = outerClassIndex(nth);
if (i == 0)
return null;
else
return constPool.getClassInfo(i);
}
/**
* Returns <code>classes[nth].inner_name_index</code>.
*/
public int innerNameIndex(int nth) {
return ByteArray.readU16bit(get(), nth * 8 + 6);
}
/**
* Returns the simple class name indicated
* by <code>classes[nth].inner_name_index</code>.
*
* @return null or the class name.
*/
public String innerName(int nth) {
int i = innerNameIndex(nth);
if (i == 0)
return null;
else
return constPool.getUtf8Info(i);
}
/**
* Returns <code>classes[nth].inner_class_access_flags</code>.
*/
public int accessFlags(int nth) {
return ByteArray.readU16bit(get(), nth * 8 + 8);
}
/**
* Makes a copy. Class names are replaced according to the
* given <code>Map</code> object.
*
* @param newCp the constant pool table used by the new copy.
* @param classnames pairs of replaced and substituted
* class names.
*/
public AttributeInfo copy(ConstPool newCp, Map classnames) {
byte[] src = get();
byte[] dest = new byte[src.length];
ConstPool cp = getConstPool();
InnerClassesAttribute attr = new InnerClassesAttribute(newCp, dest);
int n = ByteArray.readU16bit(src, 0);
ByteArray.write16bit(n, dest, 0);
int j = 2;
for (int i = 0; i < n; ++i) {
int innerClass = ByteArray.readU16bit(src, j);
int outerClass = ByteArray.readU16bit(src, j + 2);
int innerName = ByteArray.readU16bit(src, j + 4);
int innerAccess = ByteArray.readU16bit(src, j + 6);
if (innerClass != 0)
innerClass = cp.copy(innerClass, newCp, classnames);
ByteArray.write16bit(innerClass, dest, j);
if (outerClass != 0)
outerClass = cp.copy(outerClass, newCp, classnames);
ByteArray.write16bit(outerClass, dest, j + 2);
if (innerName != 0)
innerName = cp.copy(innerName, newCp, classnames);
ByteArray.write16bit(innerName, dest, j + 4);
ByteArray.write16bit(innerAccess, dest, j + 6);
j += 8;
}
return attr;
}
}
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