1 /*
 2  * Copyright (c) 1996, 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 import org.openjdk.asmtools.jasm.JasmTokens;
26 
27 import java.io.DataInputStream;
28 import java.io.IOException;
29 import java.io.PrintWriter;
30 import java.util.ArrayList;
31 
32 /**
33  *
34  */
35 public class BootstrapMethodData extends Indenter {
36 
37     int bsm_index;
38     ArrayList<Integer> bsm_args_indexes;
39 
40     // internal references
41     private Options options = Options.OptionObject();
42     private ClassData cls;
43     private PrintWriter out;
44 
45     public BootstrapMethodData(ClassData cls) {
46         this.cls = cls;
47         out = cls.out;
48     }
49 
50 
51     /*========================================================*/
52     /* Read Methods */
53 
54     /**
55      *
56      * read
57      *
58      * read and resolve the bootstrap method data called from ClassData. precondition:
59      * NumFields has already been read from the stream.
60      *
61      */
62     public void read(DataInputStream in) throws IOException {
63         // read the Methods CP indexes
64         bsm_index = in.readUnsignedShort();
65         int arg_num = in.readUnsignedShort();
66         bsm_args_indexes = new ArrayList<>(arg_num);
67         for (int i = 0; i < arg_num; i++) {
68             bsm_args_indexes.add(in.readUnsignedShort());
69         }
70     }
71 
72 
73     /*========================================================*/
74     /* Print Methods */
75     public void print() throws IOException {
76         out.print(getIndentString() + JasmTokens.Token.BOOTSTRAPMETHOD.parseKey() + " #" + bsm_index);
77         for (int i = 0; i < bsm_args_indexes.size(); i++) {
78             out.print(" #" + bsm_args_indexes.get(i));
79         }
80         out.println(";");
81     }
82 }