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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.trino.sql.tree;

import com.google.common.collect.ImmutableList;

import java.util.List;
import java.util.Optional;

public class CurrentCatalog
        extends Expression
{
    public CurrentCatalog(NodeLocation location)
    {
        super(Optional.of(location));
    }

    @Override
    public List getChildren()
    {
        return ImmutableList.of();
    }

    @Override
    public  R accept(AstVisitor visitor, C context)
    {
        return visitor.visitCurrentCatalog(this, context);
    }

    @Override
    public int hashCode()
    {
        return getClass().hashCode();
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }
        return true;
    }

    @Override
    public boolean shallowEquals(Node other)
    {
        return sameClass(this, other);
    }
}