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 jdk.vm.ci.hotspot; 24 25 import jdk.vm.ci.meta.JavaConstant; 26 import jdk.vm.ci.meta.JavaKind; 27 import jdk.vm.ci.meta.LIRKind; 28 import jdk.vm.ci.meta.VMConstant; 29 import jdk.vm.ci.meta.Value; 30 31 public final class HotSpotSentinelConstant extends Value implements JavaConstant, VMConstant { 32 33 private final JavaKind javaKind; 34 35 public HotSpotSentinelConstant(LIRKind lirKind, JavaKind javaKind) { 36 super(lirKind); 37 this.javaKind = javaKind; 38 } 39 40 public JavaKind getJavaKind() { 41 return javaKind; 42 } 43 44 @Override 45 public boolean isNull() { 46 return true; 47 } 48 49 @Override 50 public boolean isDefaultForKind() { 51 return true; 52 } 53 54 @Override 55 public Object asBoxedPrimitive() { 56 throw new IllegalArgumentException(); 57 } 58 59 @Override 60 public int asInt() { 61 throw new IllegalArgumentException(); 62 } 63 64 @Override 65 public boolean asBoolean() { 66 throw new IllegalArgumentException(); 67 } 68 69 @Override 70 public long asLong() { 71 throw new IllegalArgumentException(); 72 } 73 74 @Override 75 public float asFloat() { 76 throw new IllegalArgumentException(); 77 } 78 79 @Override 80 public double asDouble() { 81 throw new IllegalArgumentException(); 82 } 83 84 @Override 85 public String toString() { 86 return JavaConstant.toString(this); 87 } 88 89 @Override 90 public String toValueString() { 91 return "sentinel"; 92 } 93 94 @Override 95 public int hashCode() { 96 return 13; 97 } 98 99 @Override 100 public boolean equals(Object o) { 101 return o instanceof HotSpotSentinelConstant; 102 } 103 }