content: /*
   * This file is a part of BSL Language Server.
   *
   * Copyright (c) 2018-2025
   * Alexey Sosnoviy <labotamy@gmail.com>, Nikita Fedkin <nixel2007@gmail.com> and contributors
   *
   * SPDX-License-Identifier: LGPL-3.0-or-later
   *
   * BSL Language Server 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 3.0 of the License, or (at your option) any later version.
   *
   * BSL Language Server 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 BSL Language Server.
   */
  package com.github._1c_syntax.bsl.languageserver.utils.expressiontree;
  
  import lombok.AccessLevel;
  import lombok.AllArgsConstructor;
  import lombok.Data;
  import lombok.RequiredArgsConstructor;
  import lombok.Setter;
  import lombok.ToString;
  import org.antlr.v4.runtime.tree.ParseTree;
  
  @Data
  @RequiredArgsConstructor(access = AccessLevel.PROTECTED)
  @AllArgsConstructor(access = AccessLevel.PROTECTED)
  public abstract class BslExpression {
    private final ExpressionNodeType nodeType;
    private ParseTree representingAst;
  
    @ToString.Exclude
    @Setter(AccessLevel.PACKAGE)
    private BslExpression parent;
  
    /**
     * Синтаксический-помощник для более удобных downcast-ов
     * @param <T> тип, к которому надо привести данный узел
     * @return значение заданного типа
     */
    @SuppressWarnings("unchecked")
    public <T extends BslExpression> T cast() {
      return (T)this;
    }
  }
  