export declare enum TokenType {
    None = 0,
    Literal = 1,
    Operator = 2,
    OpenParen = 4,
    CloseParen = 8,
    Comma = 16,
    Dot = 32,
    Identifier = 64,
    Command = 128,// select, from, where as, on, array etc
    Parameter = 256,
    OpenBracket = 512,
    CloseBracket = 1024,
    Function = 2048,// next token is open paren
    StringSpecifier = 4096,// next token is string literal
    Type = 8192
}
/**
 * Position information for a lexeme in the source text
 */
export interface LexemePosition {
    startPosition: number;
    endPosition: number;
    startLine?: number;
    startColumn?: number;
    endLine?: number;
    endColumn?: number;
}
/**
 * Positioned comment information for lexemes
 */
export interface LexemePositionedComment {
    position: 'before' | 'after';
    comments: string[];
}
/**
 * Represents a lexical token in SQL parsing
 */
export interface Lexeme {
    type: number;
    value: string;
    comments: string[] | null;
    positionedComments?: LexemePositionedComment[];
    position?: LexemePosition;
}