import { CancellationToken } from 'vscode-languageserver';
import { CallHierarchyIncomingCall, CallHierarchyItem, CallHierarchyOutgoingCall } from 'vscode-languageserver-types';
import { ProgramView } from '../common/extensibility';
import { Position } from '../common/textRange';
import { Uri } from '../common/uri/uri';
export declare class CallHierarchyProvider {
    private _program;
    private _fileUri;
    private _position;
    private _token;
    private readonly _parseResults;
    constructor(_program: ProgramView, _fileUri: Uri, _position: Position, _token: CancellationToken);
    onPrepare(): CallHierarchyItem[] | null;
    getIncomingCalls(): CallHierarchyIncomingCall[] | null;
    getOutgoingCalls(): CallHierarchyOutgoingCall[] | null;
    private get _evaluator();
    private _getTargetDeclaration;
    private _getIncomingCallsForDeclaration;
    private _getDeclaration;
}