/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package jdk.vm.ci.hotspot;

import jdk.vm.ci.meta.Constant;
import jdk.vm.ci.meta.JavaConstant;
import jdk.vm.ci.meta.JavaKind;

The compressed representation of the null constant.
/** * The compressed representation of the {@link JavaConstant#NULL_POINTER null constant}. */
public final class HotSpotCompressedNullConstant implements JavaConstant, HotSpotConstant { public static final JavaConstant COMPRESSED_NULL = new HotSpotCompressedNullConstant(); private HotSpotCompressedNullConstant() { } public JavaKind getJavaKind() { return JavaKind.Object; } @Override public boolean isNull() { return true; } @Override public boolean isCompressed() { return true; } public Constant compress() { throw new IllegalArgumentException(); } public Constant uncompress() { return NULL_POINTER; } @Override public boolean isDefaultForKind() { return true; } @Override public Object asBoxedPrimitive() { throw new IllegalArgumentException(); } @Override public int asInt() { throw new IllegalArgumentException(); } @Override public boolean asBoolean() { throw new IllegalArgumentException(); } @Override public long asLong() { throw new IllegalArgumentException(); } @Override public float asFloat() { throw new IllegalArgumentException(); } @Override public double asDouble() { throw new IllegalArgumentException(); } @Override public String toString() { return JavaConstant.toString(this); } @Override public String toValueString() { return "null"; } @Override public int hashCode() { return System.identityHashCode(this); } @Override public boolean equals(Object o) { return o instanceof HotSpotCompressedNullConstant; } }