BitTest.java

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package org.apache.doris.nereids.trees.expressions.functions.scalar;

import org.apache.doris.catalog.FunctionSignature;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.expressions.functions.ExplicitlyCastableSignature;
import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
import org.apache.doris.nereids.types.BigIntType;
import org.apache.doris.nereids.types.IntegerType;
import org.apache.doris.nereids.types.LargeIntType;
import org.apache.doris.nereids.types.SmallIntType;
import org.apache.doris.nereids.types.TinyIntType;
import org.apache.doris.nereids.util.ExpressionUtils;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;

import java.util.List;

/** BitTest function */

public class BitTest extends ScalarFunction
        implements UnaryExpression, ExplicitlyCastableSignature, PropagateNullable {
    public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
            FunctionSignature.ret(TinyIntType.INSTANCE).varArgs(TinyIntType.INSTANCE, TinyIntType.INSTANCE),
            FunctionSignature.ret(TinyIntType.INSTANCE).varArgs(SmallIntType.INSTANCE, SmallIntType.INSTANCE),
            FunctionSignature.ret(TinyIntType.INSTANCE).varArgs(IntegerType.INSTANCE, IntegerType.INSTANCE),
            FunctionSignature.ret(TinyIntType.INSTANCE).varArgs(LargeIntType.INSTANCE, LargeIntType.INSTANCE),
            FunctionSignature.ret(TinyIntType.INSTANCE).varArgs(BigIntType.INSTANCE, BigIntType.INSTANCE));

    /**
     * constructor with 2 or more arguments.
     */
    public BitTest(Expression arg0, Expression arg1, Expression... varArgs) {
        super("bit_test", ExpressionUtils.mergeArguments(arg0, arg1, varArgs));
    }

    /**
     * withChildren.
     */
    @Override
    public BitTest withChildren(List<Expression> children) {
        Preconditions.checkArgument(children.size() >= 2);
        return new BitTest(children.get(0), children.get(1),
                children.subList(2, children.size()).toArray(new Expression[0]));
    }

    @Override
    public List<FunctionSignature> getSignatures() {
        return SIGNATURES;
    }

    @Override
    public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) {
        return visitor.visitBitTest(this, context);
    }
}