1/* 2 * Copyright (c) 2011, 2016, 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 */ 23package org.graalvm.compiler.nodes.extended; 24 25import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_8; 26import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_8; 27 28import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; 29import org.graalvm.compiler.core.common.type.StampFactory; 30import org.graalvm.compiler.core.common.type.TypeReference; 31import org.graalvm.compiler.graph.NodeClass; 32import org.graalvm.compiler.graph.NodeInputList; 33import org.graalvm.compiler.nodeinfo.NodeInfo; 34import org.graalvm.compiler.nodeinfo.Verbosity; 35import org.graalvm.compiler.nodes.ValueNode; 36import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 37import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 38import org.graalvm.compiler.nodes.spi.Lowerable; 39import org.graalvm.compiler.nodes.spi.LoweringTool; 40import org.graalvm.word.LocationIdentity; 41 42import jdk.vm.ci.meta.MetaAccessProvider; 43 44/** 45 * A node that represents an exception thrown implicitly by a Java bytecode. It can be lowered to 46 * either a {@linkplain ForeignCallDescriptor foreign} call or a pre-allocated exception object. 47 */ 48// @formatter:off 49@NodeInfo(cycles = CYCLES_8, 50 cyclesRationale = "Node will be lowered to a foreign call.", 51 size = SIZE_8) 52// @formatter:on 53public final class BytecodeExceptionNode extends AbstractMemoryCheckpoint implements Lowerable, MemoryCheckpoint.Single { 54 55 public static final NodeClass<BytecodeExceptionNode> TYPE = NodeClass.create(BytecodeExceptionNode.class); 56 protected final Class<? extends Throwable> exceptionClass; 57 @Input NodeInputList<ValueNode> arguments; 58 59 public BytecodeExceptionNode(MetaAccessProvider metaAccess, Class<? extends Throwable> exceptionClass, ValueNode... arguments) { 60 super(TYPE, StampFactory.objectNonNull(TypeReference.createExactTrusted(metaAccess.lookupJavaType(exceptionClass)))); 61 this.exceptionClass = exceptionClass; 62 this.arguments = new NodeInputList<>(this, arguments); 63 } 64 65 public Class<? extends Throwable> getExceptionClass() { 66 return exceptionClass; 67 } 68 69 @Override 70 public String toString(Verbosity verbosity) { 71 if (verbosity == Verbosity.Name) { 72 return super.toString(verbosity) + "#" + exceptionClass.getSimpleName(); 73 } 74 return super.toString(verbosity); 75 } 76 77 @Override 78 public LocationIdentity getLocationIdentity() { 79 return LocationIdentity.any(); 80 } 81 82 @Override 83 public void lower(LoweringTool tool) { 84 tool.getLowerer().lower(this, tool); 85 } 86 87 public NodeInputList<ValueNode> getArguments() { 88 return arguments; 89 } 90} 91