/** ******************************************************************************
 * Copyright (C) 2018 Red Hat, Inc. and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/
import { Uri as URI } from '@opensumi/ide-core-common';
import { ExtensionDocumentDataManager } from '../../../../common/vscode';
import { DocumentSymbol } from '../../../../common/vscode/model.api';
import type vscode from 'vscode';
/** Adapts the calls from main to extension thread for providing the document symbols. */
export declare class OutlineAdapter {
    private readonly documents;
    private readonly provider;
    constructor(documents: ExtensionDocumentDataManager, provider: vscode.DocumentSymbolProvider);
    provideDocumentSymbols(resource: URI, token: vscode.CancellationToken): Promise<DocumentSymbol[] | undefined>;
    private static asDocumentSymbolTree;
    /**
     * Test if `otherRange` is in `range`. If the ranges are equal, will return true.
     */
    private static containsRange;
    /**
     * Test if range `a` equals `b`.
     */
    private static equalsRange;
}
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