/******************************************************************************
 * Copyright 2021 TypeFox GmbH
 * This program and the accompanying materials are made available under the
 * terms of the MIT License, which is available in the project root.
 ******************************************************************************/
import type { DefinitionParams } from 'vscode-languageserver';
import type { CancellationToken } from '../utils/cancellation.js';
import type { GrammarConfig } from '../languages/grammar-config.js';
import type { NameProvider } from '../references/name-provider.js';
import type { References } from '../references/references.js';
import type { LangiumServices } from './lsp-services.js';
import type { CstNode } from '../syntax-tree.js';
import type { MaybePromise } from '../utils/promise-utils.js';
import type { LangiumDocument } from '../workspace/documents.js';
import { LocationLink } from 'vscode-languageserver';
/**
 * Language-specific service for handling go to definition requests.
 */
export interface DefinitionProvider {
    /**
     * Handle a go to definition request.
     *
     * @param document The document in which the request was triggered.
     * @param params The parameters of the request.
     * @param cancelToken A cancellation token that can be used to cancel the request.
     * @returns A list of location links to the definition(s) of the symbol at the given position.
     *
     * @throws `OperationCancelled` if cancellation is detected during execution
     * @throws `ResponseError` if an error is detected that should be sent as response to the client
     */
    getDefinition(document: LangiumDocument, params: DefinitionParams, cancelToken?: CancellationToken): MaybePromise<LocationLink[] | undefined>;
}
export interface GoToLink {
    source: CstNode;
    target: CstNode;
    targetDocument: LangiumDocument;
}
export declare class DefaultDefinitionProvider implements DefinitionProvider {
    protected readonly nameProvider: NameProvider;
    protected readonly references: References;
    protected readonly grammarConfig: GrammarConfig;
    constructor(services: LangiumServices);
    getDefinition(document: LangiumDocument, params: DefinitionParams, _cancelToken?: CancellationToken): MaybePromise<LocationLink[] | undefined>;
    protected collectLocationLinks(sourceCstNode: CstNode, _params: DefinitionParams): MaybePromise<LocationLink[] | undefined>;
    protected findLinks(source: CstNode): GoToLink[];
}
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