/**
 * 一些特殊实现的函数，在 visitFunction 里实现的
 */
import { FormulaEnv } from '../FormulaEnv';
import { ASTNode } from '../ast/ASTNode';
import { EvalResult } from '../eval/EvalResult';
export declare function ISREF(env: FormulaEnv, node: ASTNode): EvalResult;
export declare function AREAS(env: FormulaEnv, node: ASTNode): EvalResult;
export declare function SUBTOTAL(env: FormulaEnv, node: ASTNode): EvalResult;
export declare function ROW(env: FormulaEnv, node: ASTNode): number;
export declare function ROWS(env: FormulaEnv, node: ASTNode): number;
export declare function COLUMN(env: FormulaEnv, node: ASTNode): number;
export declare function COLUMNS(env: FormulaEnv, node: ASTNode): number;
export declare const specialFunctions: Map<string, (env: FormulaEnv, node: ASTNode) => EvalResult>;