Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeCheckCast.java @ 3945:8ed53447f690
Merge
author | iveresov |
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date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.interpreter; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.utilities.*; public class BytecodeCheckCast extends BytecodeWithKlass { BytecodeCheckCast(Method method, int bci) { super(method, bci); } public InstanceKlass getCheckCastKlass() { return (InstanceKlass) getKlass(); } public void verify() { if (Assert.ASSERTS_ENABLED) { Assert.that(isValid(), "check checkcast"); } } public boolean isValid() { return javaCode() == Bytecodes._checkcast; } public static BytecodeCheckCast at(Method method, int bci) { BytecodeCheckCast b = new BytecodeCheckCast(method, bci); if (Assert.ASSERTS_ENABLED) { b.verify(); } return b; } /** Like at, but returns null if the BCI is not at checkcast */ public static BytecodeCheckCast atCheck(Method method, int bci) { BytecodeCheckCast b = new BytecodeCheckCast(method, bci); return (b.isValid() ? b : null); } public static BytecodeCheckCast at(BytecodeStream bcs) { return new BytecodeCheckCast(bcs.method(), bcs.bci()); } }