import { LineColumn } from './LexemeCursor';
/**
 * Information about a single query within multi-query text
 */
export interface QueryInfo {
    /** SQL text of this query */
    sql: string;
    /** Start position in the original text (0-based character offset) */
    start: number;
    /** End position in the original text (0-based character offset) */
    end: number;
    /** Line number where query starts (1-based) */
    startLine: number;
    /** Line number where query ends (1-based) */
    endLine: number;
    /** Query index in the original text (0-based) */
    index: number;
    /** Whether this query is empty or contains only whitespace/comments */
    isEmpty: boolean;
}
/**
 * Collection of queries from multi-query text
 */
export interface QueryCollection {
    /** All queries found in the text */
    queries: QueryInfo[];
    /** Original text that was split */
    originalText: string;
    /**
     * Get the query that contains the specified cursor position
     * @param cursorPosition - Cursor position (character offset or line/column)
     */
    getActive(cursorPosition: number | LineColumn): QueryInfo | undefined;
    /**
     * Get the query at the specified index
     * @param index - Query index (0-based)
     */
    getQuery(index: number): QueryInfo | undefined;
    /**
     * Get all non-empty queries
     */
    getNonEmpty(): QueryInfo[];
}
/**
 * Splits SQL text containing multiple queries separated by semicolons
 *
 * Provides sophisticated query boundary detection that properly handles:
 * - String literals containing semicolons
 * - Comments containing semicolons
 * - Nested structures and complex SQL
 * - Empty queries and whitespace handling
 *
 * @example
 * ```typescript
 * const multiSQL = `
 *   -- First query
 *   SELECT 'hello;world' FROM users;
 *
 *   // Second query with comment
 *   SELECT id FROM orders WHERE status = 'active';
 *
 *   -- Empty query
 *   ;
 * `;
 *
 * const queries = MultiQuerySplitter.split(multiSQL);
 * console.log(queries.queries.length); // 3 queries
 *
 * // Find query at cursor position
 * const active = queries.getActive(150);
 * console.log(active?.sql); // Query containing position 150
 * ```
 */
export declare class MultiQuerySplitter {
    /**
     * Split multi-query SQL text into individual queries
     *
     * @param text - SQL text that may contain multiple queries separated by semicolons
     * @returns Collection of individual queries with position information
     */
    static split(text: string): QueryCollection;
    /**
     * Split text by semicolons while respecting quotes and comments.
     * Single-pass O(n) implementation with support for:
     * - Single-quoted strings ('...' with '' escaping)
     * - Double-quoted identifiers ("..." with "" escaping)
     * - Line comments (--)
     * - Block comments (/* ... *\/)
     * - PostgreSQL dollar-quoted strings ($$...$$ or $tag$...$tag$)
     */
    private static splitRespectingQuotesAndComments;
    /**
     * Merge comment-only segments with previous executable segments
     */
    private static mergeTrailingCommentSegments;
    /**
     * Clean SQL comments and extract SQL statements
     *
     * @param sql - SQL query text
     * @returns Cleaned SQL text or null if no SQL remains
     */
    private static cleanSqlComments;
    private static isEmptyQuery;
}
/**
 * Utility functions for working with query collections
 */
export declare class MultiQueryUtils {
    /**
     * Get context information for IntelliSense at a cursor position
     *
     * @param text - Multi-query SQL text
     * @param cursorPosition - Cursor position
     * @returns Active query and position within that query
     */
    static getContextAt(text: string, cursorPosition: number | LineColumn): {
        query: QueryInfo;
        relativePosition: number;
    } | undefined;
    /**
     * Extract all non-empty queries from multi-query text
     *
     * @param text - Multi-query SQL text
     * @returns Array of query SQL strings
     */
    static extractQueries(text: string): string[];
}