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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping.request;
import java.util.Arrays;
/**
* This class represents an xor-function in a {@link GroupingExpression}. It evaluates to a long that equals the xor of
* 'width' bits over the binary representation of the result of the argument.
*
* @author Simon Thoresen Hult
*/
public class XorBitFunction extends FunctionNode {
/**
* Constructs a new instance of this class.
*
* @param exp The expression to evaluate.
* @param numBits The number of bits of the expression value to xor.
*/
public XorBitFunction(GroupingExpression exp, int numBits) {
super("xorbit", Arrays.asList(exp, new LongValue(numBits)));
}
/**
* Returns the number of bits of the expression value to xor.
*
* @return The bit count.
*/
public int getNumBits() {
return ((LongValue)getArg(1)).getValue().intValue();
}
}
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