import TupleEntry, { ITuple } from './tuple-entry';
import { IEntry } from './table';
import Context from '../../context';
import Fact from '../../facts/fact';
export interface IIndex {
    [0]: string;
    [1]: string;
    [2]: (factHash: Map<string, Fact>) => IEntry;
    [3]: (factHash: Map<string, Fact>) => IEntry;
    [4]: string;
}
export interface IMemory {
    length: number;
    head: ITuple;
    tail: ITuple;
    indexes: IIndex[];
    tables: TupleEntry;
}
export default function Memory(): IMemory;
export declare function memory_push(m: IMemory, data: Context): ITuple;
export declare function memory_remove(m: IMemory, node: ITuple): void;
export declare function memory_clear(m: IMemory): void;
export declare function memory_get(m: IMemory, tuple: Context): ITuple[];
export declare function addIndex(m: IMemory, primary: string, lookup: string, op: string): void;