import { ValidationBase } from "../helpers/validation/ValidationBase";
import { Serializable } from "../interfaces/Serializable";
import { Expression as SBDraft2Expression } from "../../mappings/d2sb/Expression";
import { Expression as V1Expression } from "../../mappings/v1.0/Expression";
import { EventHub } from "../helpers/EventHub";
export declare abstract class ExpressionModel extends ValidationBase implements Serializable<any> {
    protected eventHub: EventHub;
    customProps: {};
    protected cachedContext: any;
    result: any;
    /** Internal type */
    protected _type: "string" | "expression" | "number";
    /** Getter for model type. Returns internal representation */
    /** Setter for model type. Model holds either expression or primitive like "string" */
    type: "string" | "expression" | "number";
    /** Flag if model contains expression */
    readonly isExpression: boolean;
    constructor(loc?: string, eventHub?: EventHub);
    /**
     * Returns CWL representation.
     */
    abstract serialize(): any;
    /**
     * Sets CWL representation as internal value
     */
    abstract deserialize(attr: any): void;
    /**
     * Evaluates expression and sets its result to result property.
     *
     * If expression throws a SyntaxError, no result is returned and the syntax error is pushed to
     * validation.errors. If expression throws any other exception, it is pushed to validation.warnings
     *
     * @param context
     * @returns {any}
     */
    abstract evaluate(context: any): Promise<any>;
    /**
     * Returns script value of expression.script, or undefined if not set.
     * @returns {string}
     */
    abstract getScript(): string;
    /**
     * Sets value of expression.script or primitive based on type parameter.
     */
    abstract setValue(val: number | string | SBDraft2Expression | V1Expression, type: "expression" | "string" | "number"): any;
    /**
     * Returns string representation of expression.script or primitive value.
     * @returns {string}
     */
    abstract toString(): string;
    validate(context?: any): Promise<any>;
    protected _evaluate(value: number | string | SBDraft2Expression, context: any, version: "v1.0" | "draft-2"): Promise<any>;
    abstract clone(): ExpressionModel;
    abstract cloneStatus(clone: ExpressionModel): any;
}