1 /*
 2  * Copyright (c) 2024, 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.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 package hat.optools;
26 
27 import jdk.incubator.code.Block;
28 import jdk.incubator.code.Op;
29 
30 public class BlockWrapper extends CodeElementWrapper<Block> {
31     public Block block() {
32         return codeElement;
33     }
34 
35     public BlockWrapper(Block block) {
36         super(block);
37     }
38 
39     public int opCount() {
40         return block().ops().size();
41     }
42 
43     public <O extends Op> O op(int delta) {
44         O op = null;
45         if (delta >= 0) {
46             op = (O) block().children().get(delta);
47         } else {
48             op = (O) block().children().get(opCount() + delta);
49         }
50         return op;
51     }
52 
53     public BodyWrapper parentBody() {
54         return new BodyWrapper(block().ancestorBody());
55     }
56 }