import type { SQLNode, ExprNode, AggregateNode, BetweenOpNode, NotBetweenOpNode, BinaryOpNode, CaseNode, WhenNode, CastNode, CollateNode, ColumnParamNode, ColumnRefNode, FragmentNode, FromClauseNode, FunctionNode, InOpNode, IntervalNode, JoinNode, ListNode, LiteralNode, LogicalOpNode, OrderByNode, ParamNode, DescribeQuery, SelectQuery, SetOperation, SampleClauseNode, SelectClauseNode, ScalarSubqueryNode, TableRefNode, UnaryOpNode, UnaryPostfixOpNode, UnnestNode, VerbatimNode, WindowNode, WindowClauseNode, WindowDefNode, WindowFunctionNode, WindowFrameNode, WindowFrameExprNode, WithClauseNode } from '../index.js';
/**
 * Abstract base class for SQL visitors providing common functionality.
 */
export declare abstract class ToStringVisitor {
    /**
     * Convert a SQL AST node to a string using this visitor.
     * @param node The SQL AST node to convert.
     * @returns The SQL string representation.
     */
    toString(node: SQLNode): string;
    protected getVisitMethod(nodeType: string): ((node: AggregateNode) => string) | ((node: BetweenOpNode) => string) | ((node: BinaryOpNode) => string) | ((node: CaseNode) => string) | ((node: CastNode) => string) | ((node: CollateNode) => string) | ((node: ColumnParamNode) => string) | ((node: DescribeQuery) => string);
    /**
     * Helper method to convert child nodes to strings.
     * @param nodes Array of child nodes.
     * @returns Array of SQL strings.
     */
    protected mapToString(nodes: SQLNode[]): string[];
    abstract visitAggregate(node: AggregateNode): string;
    abstract visitBetween(node: BetweenOpNode): string;
    abstract visitBinary(node: BinaryOpNode): string;
    abstract visitCase(node: CaseNode): string;
    abstract visitCast(node: CastNode): string;
    abstract visitCollate(node: CollateNode): string;
    abstract visitColumnParam(node: ColumnParamNode): string;
    abstract visitColumnRef(node: ColumnRefNode): string;
    abstract visitDescribeQuery(node: DescribeQuery): string;
    abstract visitExpression(node: ExprNode): string;
    abstract visitFragment(node: FragmentNode): string;
    abstract visitFromClause(node: FromClauseNode): string;
    abstract visitFunction(node: FunctionNode): string;
    abstract visitIn(node: InOpNode): string;
    abstract visitInterval(node: IntervalNode): string;
    abstract visitJoinClause(node: JoinNode): string;
    abstract visitList(node: ListNode): string;
    abstract visitLiteral(node: LiteralNode): string;
    abstract visitLogicalOperator(node: LogicalOpNode<ExprNode>): string;
    abstract visitNotBetween(node: NotBetweenOpNode): string;
    abstract visitOrderBy(node: OrderByNode): string;
    abstract visitParam(node: ParamNode): string;
    abstract visitSampleClause(node: SampleClauseNode): string;
    abstract visitScalarSubquery(node: ScalarSubqueryNode): string;
    abstract visitSelectClause(node: SelectClauseNode): string;
    abstract visitSelectQuery(node: SelectQuery): string;
    abstract visitSetOperation(node: SetOperation): string;
    abstract visitTableRef(node: TableRefNode): string;
    abstract visitUnary(node: UnaryOpNode): string;
    abstract visitUnaryPostfix(node: UnaryPostfixOpNode): string;
    abstract visitUnnest(node: UnnestNode): string;
    abstract visitVerbatim(node: VerbatimNode): string;
    abstract visitWhen(node: WhenNode): string;
    abstract visitWindow(node: WindowNode): string;
    abstract visitWindowClause(node: WindowClauseNode): string;
    abstract visitWindowDef(node: WindowDefNode): string;
    abstract visitWindowExtentExpr(node: WindowFrameExprNode): string;
    abstract visitWindowFrame(node: WindowFrameNode): string;
    abstract visitWindowFunction(node: WindowFunctionNode): string;
    abstract visitWithClause(node: WithClauseNode): string;
}
//# sourceMappingURL=to-string-visitor.d.ts.map