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- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 1999- 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,
- * or the Apache License Version 2.0.
- *
- * 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.io.IOException;
- import java.util.Map;
-
- /**
- * <code>NestMembers_attribute</code>.
- * It was introduced by JEP-181. See JVMS 4.7.29 for the specification.
- *
- * @since 3.24
- */
- public class NestMembersAttribute extends AttributeInfo {
- /**
- * The name of this attribute <code>"NestMembers"</code>.
- */
- public static final String tag = "NestMembers";
-
- NestMembersAttribute(ConstPool cp, int n, DataInputStream in) throws IOException {
- super(cp, n, in);
- }
-
- private NestMembersAttribute(ConstPool cp, byte[] info) {
- super(cp, tag, info);
- }
-
- /**
- * 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.
- */
- @Override
- public AttributeInfo copy(ConstPool newCp, Map<String, String> classnames) {
- byte[] src = get();
- byte[] dest = new byte[src.length];
- ConstPool cp = getConstPool();
-
- int n = ByteArray.readU16bit(src, 0);
- ByteArray.write16bit(n, dest, 0);
-
- for (int i = 0, j = 2; i < n; ++i, j += 2) {
- int index = ByteArray.readU16bit(src, j);
- int newIndex = cp.copy(index, newCp, classnames);
- ByteArray.write16bit(newIndex, dest, j);
- }
-
- return new NestMembersAttribute(newCp, dest);
- }
-
- /**
- * Returns <code>number_of_classes</code>.
- * @return the number of the classes recorded in this attribute.
- */
- public int numberOfClasses() {
- return ByteArray.readU16bit(info, 0);
- }
-
- /** Returns <code>classes[index]</code>.
- *
- * @param index the index into <code>classes</code>.
- * @return the value at the given index in the <code>classes</code> array.
- * It is an index into the constant pool.
- * The constant pool entry at the returned index is a
- * <code>CONSTANT_Class_info</code> structure.
- */
- public int memberClass(int index) {
- return ByteArray.readU16bit(info, index * 2 + 2);
- }
- }
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