import type { Expr, GenericSQLExpr, StructDef } from './malloy_types';
import type { DialectFieldList } from '../dialect';
/** simple indent function */
export declare function indent(s: string): string;
/**
 * Generate a SQL string literal from a given `input` string, safe, e.g., to be used in `WHERE` clauses.
 */
export declare function generateSQLStringLiteral(input: string): string;
/**
 * WHERE and HAVING clauses are built out of a chain of boolean experssions
 * joined with AND.
 */
export declare class AndChain {
    private clauses;
    constructor(intial?: string);
    clone(): AndChain;
    add(clause: string): AndChain;
    addChain(andChain: AndChain): AndChain;
    empty(): boolean;
    present(): boolean;
    sqlOr(): string;
    sql(whereOrHaving?: 'where' | 'having'): string;
}
export declare function generateHash(input: string): string;
export declare function joinWith<T>(els: T[][], sep: T): T[];
export declare function range(start: number, end: number): number[];
export declare function exprKids(eNode: Expr): IterableIterator<Expr>;
export declare function exprWalk(eNode: Expr, order?: 'pre' | 'post'): IterableIterator<Expr>;
export declare function exprMap(eNode: Expr, mapFunc: (e: Expr) => Expr): Expr;
export type SQLExprElement = string | Expr;
/**
 * Take a mixed array of strings and Expr and turn it into an SQLExpr
 * expression node.
 */
export declare function composeSQLExpr(from: SQLExprElement[]): GenericSQLExpr;
export declare function getDialectFieldList(structDef: StructDef): DialectFieldList;
/**
 * A little extra paranoia to save us from fields which contain the special
 * characters used to build the grouping key.
 */
export declare function pathToKey(node: string, fields: string[]): string;
export declare function groupingKey(node: string, fields: string[]): string;
export declare function caseGroup(groupSets: number[], s: string): string;
export declare class GenerateState {
    whereSQL?: string;
    applyValue?: string;
    totalGroupSet: number;
    withWhere(s?: string): GenerateState;
    withApply(s: string): GenerateState;
    withTotal(groupSet: number): GenerateState;
}