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import { ITokenizer, IFileInfo, IReadChunkOptions } from './types';
import { IGetToken, IToken } from '@tokenizer/token';
interface INormalizedReadChunkOptions extends IReadChunkOptions {
offset: number;
length: number;
position: number;
mayBeLess?: boolean;
}
/**
* Core tokenizer
*/
export declare abstract class AbstractTokenizer implements ITokenizer {
fileInfo: IFileInfo;
protected constructor(fileInfo?: IFileInfo);
/**
* Tokenizer-stream position
*/
position: number;
private numBuffer;
/**
* 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 peek 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
* @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;
}
export {};