1 /* 2 * Copyright (c) 2014, 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 package org.graalvm.compiler.core.match; 24 25 import org.graalvm.compiler.core.common.LIRKind; 26 import org.graalvm.compiler.core.gen.NodeLIRBuilder; 27 28 import jdk.vm.ci.meta.Value; 29 30 /** 31 * A wrapper value for the lazy evaluation of a complex match. There's an intermediate class for the 32 * closure because Value is serializable which is a hassle for the little inner classes which 33 * usually occur here. 34 */ 35 public class ComplexMatchValue extends Value { 36 37 /** 38 * This is the Value of a node which was matched as part of a complex match. The value isn't 39 * actually useable but this marks it as having been evaluated. 40 */ 41 public static final Value INTERIOR_MATCH = new Value(LIRKind.Illegal) { 42 43 @Override 44 public String toString() { 45 return "INTERIOR_MATCH"; 46 } 47 48 @Override 49 public boolean equals(Object other) { 50 // This class is a singleton 51 return other != null && getClass() == other.getClass(); 52 } 53 }; 54 55 final ComplexMatchResult result; 56 57 public ComplexMatchValue(ComplexMatchResult result) { 58 super(LIRKind.Illegal); 59 this.result = result; 60 } 61 62 public Value evaluate(NodeLIRBuilder builder) { 63 return result.evaluate(builder); 64 } 65 }