import { ParserRuleContext } from "antlr4ng";
import type { QueryExpr } from "../ir/ir.js";
import { type StatementCategory } from "../ir/statement.js";
/** Lower a parsed DuckDB file (root: stmtblock of `;`-separated statements) into the IR.
 *  A single SELECT (or FROM-first) statement lowers fully; anything else becomes a flagged
 *  non-query body — a valid parse never throws. Frozen — immutable after lower(). */
export declare function lower(tree: ParserRuleContext): QueryExpr;
/** Per-statement categories for every top-level `stmt` in a parsed `root`, in source order. */
export declare function statementCategories(tree: ParserRuleContext): StatementCategory[];