import { SELECT } from "./cqn";
export type Context = any;
/**
 * Binding Parameters
 */
export type param = {
    ref: _ref;
    /**
     * @example
     * ```js
     * cds.parse.expr("a > ?")
     * { xpr: [ { ref: [ 'a' ] }, '>', { ref: [ '?' ], param: true } ] }
     * ```
     */
    param: true;
};
export type ref = {
    ref: _ref;
};
export type val = {
    val: _val;
    literal?: "x" | "date" | "time" | "timestamp";
};
export type xpr = {
    xpr: _xpr;
};
export type func = {
    func: any;
    args: Args;
    xpr?: _xpr;
    as?: string;
};
type AnyOperator = "*";
type CompareOperator = "<" | "<=" | "<>" | "=" | "!=" | ">" | ">=";
type NumericOperator = "*" | "+" | "-" | "/";
type LogicOperator = "AND" | "OR";
type operator = NumericOperator | CompareOperator | LogicOperator | "||" | "BETWEEN" | "IN" | "IS" | "LIKE" | "NOT" | "OVER" | "NULL" | "EXISTS";
export type ArrayArgs = (ref | val | AnyOperator)[];
export type NamedArgs = {
    [argName: string]: (ref | val);
};
export type Identifier = string;
export type ObjectQuery = {
    id?: string;
    where?: CXN;
    args?: CXN[];
};
export type Args = ArrayArgs | NamedArgs;
export type Operator = Lowercase<operator>;
export type _val = string | number | boolean | null;
export type _ref = Array<Identifier | ObjectQuery>;
export type _xpr = (CXN | Operator)[];
export type CXN = ref | val | xpr | func;
export type JSFunction = (...args: any[]) => any;
export interface ExecutionOptions {
    /**
     * allow throw error or not
     */
    error?: boolean;
    /**
     * timeout for execution
     */
    timeout?: number;
}
export type expr = ref | val | xpr | func | SELECT;
export {};