io.trino.sql.tree.NullLiteral Maven / Gradle / Ivy
/*
* 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 java.util.Optional;
public class NullLiteral
extends Literal
{
public NullLiteral()
{
super(Optional.empty());
}
public NullLiteral(NodeLocation location)
{
super(Optional.of(location));
}
@Override
public R accept(AstVisitor visitor, C context)
{
return visitor.visitNullLiteral(this, context);
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
return true;
}
@Override
public int hashCode()
{
return getClass().hashCode();
}
@Override
public boolean shallowEquals(Node other)
{
return sameClass(this, other);
}
}