declare class ASTUtils {
    private LogicalMap;
    isReservedKeyword(token: any, keyword: string): boolean;
    /**
     * 检索对象里面的特定条件
     * @param items
     * @param where
     */
    search(items: any, where: any): boolean;
    /**
     * 通过特定条件分组语法结构
     * @param statement
     * @param where
     * @returns
     */
    groupStatementByType(statement: any[], where: any, filter?: Function): any[];
    /**
     * 通过逗号分组
     * @param statement
     * @param fn
     */
    groupStatementByComma(stm: any, fn: Function): void;
    /**
     * 获取逗号
     * @param stm
     * @returns
     */
    findStatementComma(stm: any): any;
    /**
     * 通过逻辑条件分组
     * @param statement
     * @param fn
     */
    groupStatementByLogical(stm: any, fn: Function): void;
    /**
     * 判断下是否是顶级语法节点,
     * @param statements
     * @returns
     */
    isRootStatement(statements: any): boolean;
    /**
     * 判断是否是逻辑项
     * @param item
     * @returns
     */
    isLogicalItem(item: any): boolean;
    /**
     * 获取语句的类型,取获取到的第一个值
     * @param tokens
     * @returns
     */
    getStatementType(tokens: any): any;
    /**
     * 判断是否是join子句
     * @param statement
     */
    isJOINClause(stm: any): boolean;
    /**
     * 是否是开窗函数
     *
     */
    isPartitionClause(stm: any, clauseType: string): boolean | undefined;
    /**
     * 获取join on 语句where的起始位置
     * @param stm
     */
    getJOINONClauseWhereIndex(stm: any): any;
    /**
     * 切分join子句
     * @param stm
     */
    groupStatementByJOIN(stm: any): any[];
}
declare const _default: ASTUtils;
export default _default;