1 /*
2  * Copyright (c) 2002, 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
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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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24 
25 package sun.jvm.hotspot.interpreter;
26 
27 import sun.jvm.hotspot.oops.*;
28 
29 public abstract class BytecodeWideable extends Bytecode {
BytecodeWideable(Method method, int bci)30   BytecodeWideable(Method method, int bci) {
31     super(method, bci);
32   }
33 
isWide()34   public boolean isWide() {
35     int prevBci = bci() - 1;
36     return (prevBci > -1 && method.getBytecodeOrBPAt(prevBci) == Bytecodes._wide);
37   }
38 
39   // the local variable index
getLocalVarIndex()40   public int getLocalVarIndex() {
41     return (isWide()) ? getIndexU2(code(), true) : getIndexU1();
42   }
43 }
44