/**
 * Lexer class for tokenizing RobinPath code
 */
/**
 * Token kinds for RobinPath language
 * Using const object instead of enum for better compatibility
 */
export declare const TokenKind: {
    readonly STRING: "STRING";
    readonly NUMBER: "NUMBER";
    readonly BOOLEAN: "BOOLEAN";
    readonly NULL: "NULL";
    readonly IDENTIFIER: "IDENTIFIER";
    readonly VARIABLE: "VARIABLE";
    readonly KEYWORD: "KEYWORD";
    readonly ASSIGN: "ASSIGN";
    readonly PLUS: "PLUS";
    readonly MINUS: "MINUS";
    readonly MULTIPLY: "MULTIPLY";
    readonly DIVIDE: "DIVIDE";
    readonly MODULO: "MODULO";
    readonly EQ: "EQ";
    readonly NE: "NE";
    readonly GT: "GT";
    readonly LT: "LT";
    readonly GTE: "GTE";
    readonly LTE: "LTE";
    readonly AND: "AND";
    readonly OR: "OR";
    readonly NOT: "NOT";
    readonly LPAREN: "LPAREN";
    readonly RPAREN: "RPAREN";
    readonly LBRACKET: "LBRACKET";
    readonly RBRACKET: "RBRACKET";
    readonly LBRACE: "LBRACE";
    readonly RBRACE: "RBRACE";
    readonly COMMA: "COMMA";
    readonly COLON: "COLON";
    readonly DOT: "DOT";
    readonly DECORATOR: "DECORATOR";
    readonly COMMENT: "COMMENT";
    readonly NEWLINE: "NEWLINE";
    readonly EOF: "EOF";
    readonly SUBEXPRESSION_OPEN: "SUBEXPRESSION_OPEN";
};
export type TokenKind = typeof TokenKind[keyof typeof TokenKind];
/**
 * List of RobinPath keywords
 */
export declare const KEYWORDS: Set<string>;
/**
 * A single token in the source code
 */
export interface Token {
    kind: TokenKind;
    text: string;
    line: number;
    column: number;
    value?: any;
    isContinuation?: boolean;
}
/**
 * Position information for error reporting
 */
export interface SourcePosition {
    line: number;
    column: number;
}
export declare class Lexer {
    /**
     * Tokenize entire source code into Token objects
     * This is the new token-stream based approach
     *
     * @param source - Full source code (multi-line)
     * @returns Array of tokens with position information
     */
    static tokenizeFull(source: string): Token[];
    /**
     * Legacy tokenize method - kept for backward compatibility
     * Tokenizes a single line into string tokens
     *
     * @param line - A single line of code
     * @returns Array of string tokens
     */
    static tokenize(line: string): string[];
}