/**
 * IDL Lexer (.thrift-style source)
 * Same token types as DeukLexer for shared AST builder.
 */
import { DeukPackToken } from '../types/DeukPackTypes';
export declare class IdlLexer {
    private input;
    private position;
    private line;
    private column;
    private tokens;
    private keywords;
    /**
     * Tokenize IDL input string
     */
    tokenize(input: string): DeukPackToken[];
    private nextToken;
    private readStringLiteral;
    private readEscapeSequence;
    private readNumber;
    private readIdentifier;
    private readLineComment;
    private readBlockComment;
    private skipWhitespace;
    private advance;
    private peek;
    private isAlpha;
    private isAlphaNumeric;
    private isDigit;
    private isHexDigit;
    private isWhitespace;
    private createToken;
}
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