import { CancellationToken, DocumentSymbol, SymbolInformation } from 'vscode-languageserver';
import { ProgramView } from '../common/extensibility';
import { Uri } from '../common/uri/uri';
import { IndexOptions, IndexSymbolData } from './symbolIndexer';
export declare function convertToFlatSymbols(program: ProgramView, uri: Uri, symbolList: DocumentSymbol[]): SymbolInformation[];
export declare class DocumentSymbolProvider {
    protected readonly program: ProgramView;
    protected readonly uri: Uri;
    private readonly _supportHierarchicalDocumentSymbol;
    private readonly _indexOptions;
    private readonly _token;
    private _parseResults;
    constructor(program: ProgramView, uri: Uri, _supportHierarchicalDocumentSymbol: boolean, _indexOptions: IndexOptions, _token: CancellationToken);
    getSymbols(): DocumentSymbol[] | SymbolInformation[];
    protected getHierarchicalSymbols(): DocumentSymbol[];
    protected appendDocumentSymbolsRecursive(indexSymbolData: IndexSymbolData[] | undefined, symbolList: DocumentSymbol[]): void;
}