import type { ITokenizer, IFileInfo, IReadChunkOptions, ITokenizerOptions } from './types.js';
import type { IGetToken, IToken } from '@tokenizer/token';
interface INormalizedReadChunkOptions extends IReadChunkOptions {
    length: number;
    position: number;
    mayBeLess?: boolean;
}
/**
 * Core tokenizer
 */
export declare abstract class AbstractTokenizer implements ITokenizer {
    private onClose?;
    private numBuffer;
    abstract fileInfo: IFileInfo;
    /**
     * Tokenizer-stream position
     */
    position: number;
    /**
     * Constructor
     * @param options Tokenizer options
     * @protected
     */
    protected constructor(options?: ITokenizerOptions);
    abstract supportsRandomAccess(): boolean;
    /**
     * Read buffer from tokenizer
     * @param buffer - Target buffer to fill with data read from the tokenizer-stream
     * @param options - Additional read options
     * @returns Promise with number of bytes read
     */
    abstract readBuffer(buffer: Uint8Array, options?: IReadChunkOptions): Promise<number>;
    /**
     * Peek (read ahead) buffer from tokenizer
     * @param uint8Array - Target buffer to fill with data peeked from the tokenizer-stream
     * @param options - Peek behaviour options
     * @returns Promise with number of bytes read
     */
    abstract peekBuffer(uint8Array: Uint8Array, options?: IReadChunkOptions): Promise<number>;
    /**
     * Read a token from the tokenizer-stream
     * @param token - The token to read
     * @param position - If provided, the desired position in the tokenizer-stream
     * @returns Promise with token data
     */
    readToken<Value>(token: IGetToken<Value>, position?: number): Promise<Value>;
    /**
     * Peek a token from the tokenizer-stream.
     * @param token - Token to peek from the tokenizer-stream.
     * @param position - Offset where to begin reading within the file. If position is null, data will be read from the current file position.
     * @returns Promise with token data
     */
    peekToken<Value>(token: IGetToken<Value>, position?: number): Promise<Value>;
    /**
     * Read a numeric token from the stream
     * @param token - Numeric token
     * @returns Promise with number
     */
    readNumber(token: IToken<number>): Promise<number>;
    /**
     * Read a numeric token from the stream
     * @param token - Numeric token
     * @returns Promise with number
     */
    peekNumber(token: IToken<number>): Promise<number>;
    /**
     * Ignore number of bytes, advances the pointer in under tokenizer-stream.
     * @param length - Number of bytes to ignore.  Must be ≥ 0.
     * @return resolves the number of bytes ignored, equals length if this available, otherwise the number of bytes available
     */
    ignore(length: number): Promise<number>;
    close(): Promise<void>;
    protected normalizeOptions(uint8Array: Uint8Array, options?: IReadChunkOptions): INormalizedReadChunkOptions;
    abort(): Promise<void>;
}
export {};
