1 /* 2 * Copyright (c) 2013, 2014, 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.graalvm.compiler.nodes.java; 24 25 import java.lang.reflect.Modifier; 26 27 import org.graalvm.compiler.core.common.type.StampFactory; 28 import org.graalvm.compiler.graph.Node; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.graph.spi.Canonicalizable; 31 import org.graalvm.compiler.graph.spi.CanonicalizerTool; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.FrameState; 34 import org.graalvm.compiler.nodes.ValueNode; 35 36 import jdk.vm.ci.meta.MetaAccessProvider; 37 import jdk.vm.ci.meta.ResolvedJavaType; 38 39 @NodeInfo 40 public class DynamicNewInstanceNode extends AbstractNewObjectNode implements Canonicalizable { 41 public static final NodeClass<DynamicNewInstanceNode> TYPE = NodeClass.create(DynamicNewInstanceNode.class); 42 43 @Input ValueNode clazz; 44 45 /** 46 * Class pointer to class.class needs to be exposed earlier than this node is lowered so that it 47 * can be replaced by the AOT machinery. If it's not needed for lowering this input can be 48 * ignored. 49 */ 50 @OptionalInput ValueNode classClass; 51 52 public DynamicNewInstanceNode(ValueNode clazz, boolean fillContents) { 53 this(TYPE, clazz, fillContents, null); 54 } 55 56 protected DynamicNewInstanceNode(NodeClass<? extends DynamicNewInstanceNode> c, ValueNode clazz, boolean fillContents, FrameState stateBefore) { 57 super(c, StampFactory.objectNonNull(), fillContents, stateBefore); 58 this.clazz = clazz; 59 } 60 61 public ValueNode getInstanceType() { 62 return clazz; 63 } 64 65 @Override 66 public Node canonical(CanonicalizerTool tool) { 67 if (clazz.isConstant()) { 68 ResolvedJavaType type = tool.getConstantReflection().asJavaType(clazz.asConstant()); 69 if (type != null && type.isInitialized() && !throwsInstantiationException(type, tool.getMetaAccess())) { 70 return createNewInstanceNode(type); 71 } 72 } 73 return this; 74 } 75 76 /** Hook for subclasses to instantiate a subclass of {@link NewInstanceNode}. */ 77 protected NewInstanceNode createNewInstanceNode(ResolvedJavaType type) { 78 return new NewInstanceNode(type, fillContents(), stateBefore()); 79 } 80 81 public static boolean throwsInstantiationException(Class<?> type, Class<?> classClass) { 82 return type.isPrimitive() || type.isArray() || type.isInterface() || Modifier.isAbstract(type.getModifiers()) || type == classClass; 83 } 84 85 public static boolean throwsInstantiationException(ResolvedJavaType type, MetaAccessProvider metaAccess) { 86 return type.isPrimitive() || type.isArray() || type.isInterface() || Modifier.isAbstract(type.getModifiers()) || type.equals(metaAccess.lookupJavaType(Class.class)); 87 } 88 89 public ValueNode getClassClass() { 90 return classClass; 91 } 92 93 public void setClassClass(ValueNode newClassClass) { 94 updateUsages(classClass, newClassClass); 95 classClass = newClassClass; 96 } 97 }