Dround.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.ComputePrecisionForRound;
import org.apache.doris.nereids.trees.expressions.functions.PropagateNullable;
import org.apache.doris.nereids.trees.expressions.functions.SearchSignatureForRound;
import org.apache.doris.nereids.trees.expressions.visitor.ExpressionVisitor;
import org.apache.doris.nereids.types.DecimalV3Type;
import org.apache.doris.nereids.types.DoubleType;
import org.apache.doris.nereids.types.IntegerType;

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

import java.util.List;

/**
 * ScalarFunction 'dround'. This class is generated by GenerateFunction.
 */
public class Dround extends ScalarFunction
        implements SearchSignatureForRound, PropagateNullable, ComputePrecisionForRound {

    public static final List<FunctionSignature> SIGNATURES = ImmutableList.of(
            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD),
            FunctionSignature.ret(DecimalV3Type.WILDCARD).args(DecimalV3Type.WILDCARD, IntegerType.INSTANCE),
            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE),
            FunctionSignature.ret(DoubleType.INSTANCE).args(DoubleType.INSTANCE, IntegerType.INSTANCE)
    );

    /**
     * constructor with 1 argument.
     */
    public Dround(Expression arg) {
        super("dround", arg);
    }

    /**
     * constructor with 2 arguments.
     */
    public Dround(Expression arg0, Expression arg1) {
        super("dround", arg0, arg1);
    }

    /**
     * withChildren.
     */
    @Override
    public Dround withChildren(List<Expression> children) {
        Preconditions.checkArgument(children.size() == 1
                || children.size() == 2);
        if (children.size() == 1) {
            return new Dround(children.get(0));
        } else {
            return new Dround(children.get(0), children.get(1));
        }
    }

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

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