1 /*
 2  * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 package org.openjdk.asmtools.jdis;
24 
25 
26 import org.openjdk.asmtools.jasm.JasmTokens;
27 
28 import java.io.DataInputStream;
29 import java.io.IOException;
30 
31 /**
32  * The NestHost attribute data
33  * <p>
34  * since class file 55.0 (JEP 181)
35  */
36 public class NestHostData extends Indenter{
37     ClassData cls;
38     int host_class_index;
39     private Options options = Options.OptionObject();
40 
41     public NestHostData(ClassData cls) {
42         this.cls = cls;
43     }
44 
45     public NestHostData read(DataInputStream in, int attribute_length) throws IOException, ClassFormatError {
46         if (attribute_length != 2) {
47             throw new ClassFormatError("ATT_NestHost: Invalid attribute length");
48         }
49         host_class_index = in.readUnsignedShort();
50         return this;
51     }
52 
53     public void print() {
54         boolean pr_cpx = options.contains(Options.PR.CPX);
55         cls.out.print(getIndentString() + JasmTokens.Token.NESTHOST.parseKey() + " ");
56         if (pr_cpx) {
57             cls.out.print("#" + host_class_index + "; //");
58         }
59         if (pr_cpx) {
60             cls.pool.PrintConstant(cls.out, host_class_index);
61             cls.out.println();
62         } else {
63             cls.out.println(cls.pool.StringValue(host_class_index) + ";");
64         }
65     }
66 }