1 /* 2 * Copyright (c) 2011, 2015, 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 24 25 package org.graalvm.compiler.nodes.virtual; 26 27 import org.graalvm.compiler.graph.NodeClass; 28 import org.graalvm.compiler.nodeinfo.NodeInfo; 29 import org.graalvm.compiler.nodeinfo.Verbosity; 30 import org.graalvm.compiler.nodes.FixedNode; 31 import org.graalvm.compiler.nodes.ValueNode; 32 33 import jdk.vm.ci.meta.JavaKind; 34 import jdk.vm.ci.meta.MetaAccessProvider; 35 import jdk.vm.ci.meta.ResolvedJavaField; 36 import jdk.vm.ci.meta.ResolvedJavaType; 37 38 @NodeInfo(nameTemplate = "VirtualInstance({p#objectId}) {p#type/s}") 39 public class VirtualInstanceNode extends VirtualObjectNode { 40 41 public static final NodeClass<VirtualInstanceNode> TYPE = NodeClass.create(VirtualInstanceNode.class); 42 protected final ResolvedJavaType type; 43 protected final ResolvedJavaField[] fields; 44 45 public VirtualInstanceNode(ResolvedJavaType type, boolean hasIdentity) { 46 this(type, type.getInstanceFields(true), hasIdentity); 47 } 48 49 public VirtualInstanceNode(ResolvedJavaType type, ResolvedJavaField[] fields, boolean hasIdentity) { 50 this(TYPE, type, fields, hasIdentity); 51 } 52 53 protected VirtualInstanceNode(NodeClass<? extends VirtualInstanceNode> c, ResolvedJavaType type, boolean hasIdentity) { 54 this(c, type, type.getInstanceFields(true), hasIdentity); 55 } 56 57 protected VirtualInstanceNode(NodeClass<? extends VirtualInstanceNode> c, ResolvedJavaType type, ResolvedJavaField[] fields, boolean hasIdentity) { 58 super(c, type, hasIdentity); 59 this.type = type; 60 this.fields = fields; 61 } 62 63 @Override 64 public ResolvedJavaType type() { 65 return type; 66 } 67 68 @Override 69 public int entryCount() { 70 return fields.length; 71 } 72 73 public ResolvedJavaField field(int index) { 74 return fields[index]; 75 } 76 77 public ResolvedJavaField[] getFields() { 78 return fields; 79 } 80 81 @Override 82 public String toString(Verbosity verbosity) { 83 if (verbosity == Verbosity.Name) { 84 return super.toString(Verbosity.Name) + "(" + getObjectId() + ") " + type.toJavaName(false); 85 } else { 86 return super.toString(verbosity); 87 } 88 } 89 90 @Override 91 public String entryName(int index) { 92 return fields[index].getName(); 93 } 94 95 public int fieldIndex(ResolvedJavaField field) { 96 // on average fields.length == ~6, so a linear search is fast enough 97 for (int i = 0; i < fields.length; i++) { 98 if (fields[i].equals(field)) { 99 return i; 100 } 101 } 102 return -1; 103 } 104 105 @Override 106 public int entryIndexForOffset(MetaAccessProvider metaAccess, long constantOffset, JavaKind expectedEntryKind) { 107 return fieldIndex(type.findInstanceFieldWithOffset(constantOffset, expectedEntryKind)); 108 } 109 110 @Override 111 public JavaKind entryKind(int index) { 112 assert index >= 0 && index < fields.length; 113 return fields[index].getJavaKind(); 114 } 115 116 @Override 117 public VirtualInstanceNode duplicate() { 118 VirtualInstanceNode node = new VirtualInstanceNode(type, fields, super.hasIdentity()); 119 node.setNodeSourcePosition(this.getNodeSourcePosition()); 120 return node; 121 } 122 123 @Override 124 public ValueNode getMaterializedRepresentation(FixedNode fixed, ValueNode[] entries, LockState locks) { 125 AllocatedObjectNode node = new AllocatedObjectNode(this); 126 node.setNodeSourcePosition(this.getNodeSourcePosition()); 127 return node; 128 } 129 }