1 /* 2 * Copyright (c) 2014, 2018, 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.core.match; 26 27 import org.graalvm.compiler.core.common.LIRKind; 28 import org.graalvm.compiler.core.gen.NodeLIRBuilder; 29 30 import jdk.vm.ci.meta.Value; 31 32 /** 33 * A wrapper value for the lazy evaluation of a complex match. There's an intermediate class for the 34 * closure because Value is serializable which is a hassle for the little inner classes which 35 * usually occur here. 36 */ 37 public class ComplexMatchValue extends Value { 38 39 /** 40 * This is the Value of a node which was matched as part of a complex match. The value isn't 41 * actually useable but this marks it as having been evaluated. 42 */ 43 public static final Value INTERIOR_MATCH = new Value(LIRKind.Illegal) { 44 45 @Override 46 public String toString() { 47 return "INTERIOR_MATCH"; 48 } 49 50 @Override 51 public boolean equals(Object other) { 52 // This class is a singleton 53 return other != null && getClass() == other.getClass(); 54 } 55 }; 56 57 final ComplexMatchResult result; 58 59 public ComplexMatchValue(ComplexMatchResult result) { 60 super(LIRKind.Illegal); 61 this.result = result; 62 } 63 64 public Value evaluate(NodeLIRBuilder builder) { 65 return result.evaluate(builder); 66 } 67 }