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.bsl;
  
  import com.github._1c_syntax.bsl.languageserver.utils.Strings;
  import com.github._1c_syntax.bsl.parser.BSLParser;
  import lombok.experimental.UtilityClass;
  import org.antlr.v4.runtime.RuleContext;
  
  import java.util.List;
  import java.util.Optional;
  
  /**
   * Набор методов для работы с конструкторами объектов 1С
   */
  @UtilityClass
  public class Constructors {
  
    /**
     * Вычисляет имя типа создаваемого объекта, работает с
     *  Новый ТипОбъекта;
     *  Новый("ТипОбъекта")
     * @param newExpression контекст выражения
     * @return имя типа объекта
     */
    public static Optional<String> typeName(BSLParser.NewExpressionContext newExpression) {
      return Optional.ofNullable(newExpression.typeName())
        .map(RuleContext::getText)
        .or(() -> getTypeNameFromArgs(newExpression));
    }
  
    private static Optional<String> getTypeNameFromArgs(BSLParser.NewExpressionContext newExpression){
      return Optional.ofNullable(newExpression.doCall())
        .map(BSLParser.DoCallContext::callParamList)
        .map(BSLParser.CallParamListContext::callParam)
        .flatMap(Constructors::first)
        .map(BSLParser.CallParamContext::expression)
        .map(BSLParser.ExpressionContext::member)
        .flatMap(Constructors::first)
        .map(BSLParser.MemberContext::constValue)
        .filter(constValue -> constValue.string() != null)
        .map(RuleContext::getText)
        .map(Strings::trimQuotes);
    }
  
    private static <T> Optional<T> first(List<T> list) {
      if (list.isEmpty()) {
        return Optional.empty();
      } else {
        return Optional.of(list.get(0));
      }
    }
  }
  