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org.sonar.java.model.pattern.NullPatternTreeImpl Maven / Gradle / Ivy

/*
 * SonarQube Java
 * Copyright (C) 2012-2023 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.java.model.pattern;

import java.util.Collections;
import java.util.List;
import java.util.Optional;
import org.sonar.plugins.java.api.semantic.Type;
import org.sonar.plugins.java.api.tree.LiteralTree;
import org.sonar.plugins.java.api.tree.NullPatternTree;
import org.sonar.plugins.java.api.tree.Tree;
import org.sonar.plugins.java.api.tree.TreeVisitor;

/**
 * JDK 17 Preview feature  (JEP-406), deprecated by design until it will be final
 * java:S1874 = "@Deprecated" code should not be used
 */
@SuppressWarnings("java:S1874")
public class NullPatternTreeImpl extends AbstractPatternTree implements NullPatternTree {

  private final LiteralTree nullLiteral;

  public NullPatternTreeImpl(LiteralTree nullLiteral) {
    super(Tree.Kind.NULL_PATTERN);
    this.nullLiteral = nullLiteral;
  }

  @Override
  public Type symbolType() {
    return nullLiteral.symbolType();
  }

  @Override
  public Optional asConstant() {
    return nullLiteral.asConstant();
  }

  @Override
  public  Optional asConstant(Class type) {
    return nullLiteral.asConstant(type);
  }

  @Override
  public void accept(TreeVisitor visitor) {
    visitor.visitNullPattern(this);
  }

  @Override
  public LiteralTree nullLiteral() {
    return nullLiteral;
  }

  @Override
  protected List children() {
    return Collections.singletonList(nullLiteral);
  }

}