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- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 1999-2003 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 length() { return ByteArray.readU16bit(get(), 0); }
-
- /**
- * Returns <code>classes[nth].inner_class_info_index</code>.
- */
- public int innerClass(int nth) {
- return ByteArray.readU16bit(get(), nth * 8 + 2);
- }
-
- /**
- * Returns <code>classes[nth].outer_class_info_index</code>.
- */
- public int outerClass(int nth) {
- return ByteArray.readU16bit(get(), nth * 8 + 4);
- }
-
- /**
- * Returns <code>classes[nth].inner_name_index</code>.
- */
- public int innerName(int nth) {
- return ByteArray.readU16bit(get(), nth * 8 + 6);
- }
-
- /**
- * 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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