import { ParserRuleContext } from "antlr4ng";
import type { QueryExpr } from "../ir/ir.js";
import { type StatementCategory } from "../ir/statement.js";
/**
 * Lower a parsed T-SQL input (`tsql_file`, from `parseTSql`) into the IR, reporting the statement
 * category for ANY statement kind — the single entry, the same shape as the Databricks/Snowflake
 * `lower`. A query is modelled onto the IR (its body lowered, so the semantic layer runs on it);
 * DML / DDL / control-flow / admin statements are categorised but not modelled (no object-DDL
 * lowering — out of scope), returning a flagged-empty body that carries the category.
 */
export declare function lower(tree: ParserRuleContext): QueryExpr;
/** Per-statement categories for every top-level unit of a parsed `tsql_file`, in source order —
 *  the file-level view behind statementCategory (which folds >1 into "compound"). Lets consumers
 *  (e.g. the corpus gates) see what a multi-statement script contains. */
export declare function statementCategories(tree: ParserRuleContext): StatementCategory[];