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.folding;
  
  import com.github._1c_syntax.bsl.languageserver.context.DocumentContext;
  import com.github._1c_syntax.bsl.languageserver.utils.Trees;
  import com.github._1c_syntax.bsl.parser.BSLParser;
  import org.antlr.v4.runtime.tree.ParseTree;
  import org.eclipse.lsp4j.FoldingRange;
  import org.eclipse.lsp4j.FoldingRangeKind;
  import org.springframework.stereotype.Component;
  
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Сапплаер областей сворачивания импортов библиотек OneScript (<code>#Использовать ...</code>).
   */
  @Component
  public class UseFoldingRangeSupplier implements FoldingRangeSupplier {
  
    @Override
    public List<FoldingRange> getFoldingRanges(DocumentContext documentContext) {
      BSLParser.FileContext fileContext = documentContext.getAst();
      ParseTree[] uses = Trees.findAllRuleNodes(fileContext, BSLParser.RULE_use).toArray(new ParseTree[0]);
  
      if (uses.length <= 1) {
        return Collections.emptyList();
      }
  
      int start = ((BSLParser.UseContext) uses[0]).getStart().getLine();
      int stop = ((BSLParser.UseContext) uses[uses.length - 1]).getStop().getLine();
  
      FoldingRange foldingRange = new FoldingRange(start - 1, stop - 1);
      foldingRange.setKind(FoldingRangeKind.Imports);
  
      return Collections.singletonList(foldingRange);
    }
  
  }
  