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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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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package com.oracle.svm.core.c.enums;
import org.graalvm.compiler.core.common.calc.UnsignedMath;
public class EnumArrayLookup extends EnumRuntimeData {
private final long cOffset;
private Enum<?>[] cToJava;
public EnumArrayLookup(long[] javaToC, long cOffset, Enum<?>[] cToJava) {
super(javaToC);
this.cOffset = cOffset;
this.cToJava = cToJava;
}
@Override
protected Enum<?> convertCToJava(long cValue) {
long arrayIdx = cValue - cOffset;
if (UnsignedMath.aboveOrEqual(arrayIdx, cToJava.length)) {
return null;
}
return cToJava[(int) arrayIdx];
}
}