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