import { IfcExpressionContext } from "../context/IfcExpressionContext.js";
import { ExprKind } from "./ExprKind.js";
import { ExprEvalError, ExprEvalResult } from "./ExprEvalResult.js";
import { ExprBase } from "./ExprBase.js";
import { Expr } from "./Expr.js";
export declare abstract class Expr1<V, E> extends ExprBase<E> {
    readonly sub: Expr<V>;
    protected constructor(exprKind: ExprKind, sub: Expr<V>);
    getChildren(): Array<Expr<any>>;
    protected abstract calculateResult(ctx: IfcExpressionContext, localCtx: Map<string, any>, subExpressionResult: V): E | ExprEvalError;
    /**
     * Override to generate a more specific error result.
     * @param ctx
     * @param localCtx
     * @param subExpressionResult
     * @protected
     */
    protected obtainResultForSubExpressionError(ctx: IfcExpressionContext, localCtx: Map<string, any>, subExpressionResult: ExprEvalError): ExprEvalResult<E>;
    private makeErrorOrCalculate;
    protected onBeforeRecusion(ctx: IfcExpressionContext, localCtx: Map<string, any>): undefined | ExprEvalError;
    evaluate(ctx: IfcExpressionContext, localCtx: Map<string, any>): ExprEvalResult<E>;
    protected handleError(error: any, subResult: ExprEvalResult<V>): ExprEvalError;
}