1880 lines
60 KiB
JavaScript
1880 lines
60 KiB
JavaScript
(function webpackUniversalModuleDefinition(root, factory) {
|
|
if(typeof exports === 'object' && typeof module === 'object')
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module.exports = factory();
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else if(typeof define === 'function' && define.amd)
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define([], factory);
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else if(typeof exports === 'object')
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exports["MessagePack"] = factory();
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else
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root["MessagePack"] = factory();
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})(this, () => {
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return /******/ (() => { // webpackBootstrap
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/******/ "use strict";
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/******/ // The require scope
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/******/ var __webpack_require__ = {};
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/******/
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/************************************************************************/
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|
/******/ /* webpack/runtime/define property getters */
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/******/ (() => {
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/******/ // define getter functions for harmony exports
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/******/ __webpack_require__.d = (exports, definition) => {
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/******/ for(var key in definition) {
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|
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
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/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
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|
/******/ }
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|
/******/ }
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|
/******/ };
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/******/ })();
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/******/
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|
/******/ /* webpack/runtime/hasOwnProperty shorthand */
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|
/******/ (() => {
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|
/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
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|
/******/ })();
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|
/******/
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|
/******/ /* webpack/runtime/make namespace object */
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/******/ (() => {
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/******/ // define __esModule on exports
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/******/ __webpack_require__.r = (exports) => {
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/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
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/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
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|
/******/ }
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/******/ Object.defineProperty(exports, '__esModule', { value: true });
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/******/ };
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/******/ })();
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/******/
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/************************************************************************/
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var __webpack_exports__ = {};
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// ESM COMPAT FLAG
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__webpack_require__.r(__webpack_exports__);
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// EXPORTS
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__webpack_require__.d(__webpack_exports__, {
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DecodeError: () => (/* reexport */ DecodeError),
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Decoder: () => (/* reexport */ Decoder),
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EXT_TIMESTAMP: () => (/* reexport */ EXT_TIMESTAMP),
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Encoder: () => (/* reexport */ Encoder),
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ExtData: () => (/* reexport */ ExtData),
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ExtensionCodec: () => (/* reexport */ ExtensionCodec),
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decode: () => (/* reexport */ decode),
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decodeArrayStream: () => (/* reexport */ decodeArrayStream),
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decodeAsync: () => (/* reexport */ decodeAsync),
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decodeMulti: () => (/* reexport */ decodeMulti),
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decodeMultiStream: () => (/* reexport */ decodeMultiStream),
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decodeTimestampExtension: () => (/* reexport */ decodeTimestampExtension),
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decodeTimestampToTimeSpec: () => (/* reexport */ decodeTimestampToTimeSpec),
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encode: () => (/* reexport */ encode),
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encodeDateToTimeSpec: () => (/* reexport */ encodeDateToTimeSpec),
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encodeTimeSpecToTimestamp: () => (/* reexport */ encodeTimeSpecToTimestamp),
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encodeTimestampExtension: () => (/* reexport */ encodeTimestampExtension)
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});
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;// ./src/utils/utf8.ts
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function utf8Count(str) {
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const strLength = str.length;
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let byteLength = 0;
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let pos = 0;
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while (pos < strLength) {
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let value = str.charCodeAt(pos++);
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if ((value & 0xffffff80) === 0) {
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// 1-byte
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byteLength++;
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continue;
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}
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else if ((value & 0xfffff800) === 0) {
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// 2-bytes
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byteLength += 2;
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}
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else {
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// handle surrogate pair
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|
if (value >= 0xd800 && value <= 0xdbff) {
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// high surrogate
|
|
if (pos < strLength) {
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const extra = str.charCodeAt(pos);
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if ((extra & 0xfc00) === 0xdc00) {
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++pos;
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value = ((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000;
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}
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}
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}
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if ((value & 0xffff0000) === 0) {
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// 3-byte
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byteLength += 3;
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}
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else {
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// 4-byte
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byteLength += 4;
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}
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}
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}
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return byteLength;
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}
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function utf8EncodeJs(str, output, outputOffset) {
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const strLength = str.length;
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let offset = outputOffset;
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let pos = 0;
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while (pos < strLength) {
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let value = str.charCodeAt(pos++);
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if ((value & 0xffffff80) === 0) {
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// 1-byte
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output[offset++] = value;
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continue;
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}
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else if ((value & 0xfffff800) === 0) {
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// 2-bytes
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output[offset++] = ((value >> 6) & 0x1f) | 0xc0;
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}
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else {
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// handle surrogate pair
|
|
if (value >= 0xd800 && value <= 0xdbff) {
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|
// high surrogate
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|
if (pos < strLength) {
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const extra = str.charCodeAt(pos);
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if ((extra & 0xfc00) === 0xdc00) {
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++pos;
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value = ((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000;
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}
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}
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}
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if ((value & 0xffff0000) === 0) {
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// 3-byte
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output[offset++] = ((value >> 12) & 0x0f) | 0xe0;
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output[offset++] = ((value >> 6) & 0x3f) | 0x80;
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}
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else {
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// 4-byte
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output[offset++] = ((value >> 18) & 0x07) | 0xf0;
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output[offset++] = ((value >> 12) & 0x3f) | 0x80;
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output[offset++] = ((value >> 6) & 0x3f) | 0x80;
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}
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}
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output[offset++] = (value & 0x3f) | 0x80;
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}
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}
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// TextEncoder and TextDecoder are standardized in whatwg encoding:
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// https://encoding.spec.whatwg.org/
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// and available in all the modern browsers:
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// https://caniuse.com/textencoder
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// They are available in Node.js since v12 LTS as well:
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// https://nodejs.org/api/globals.html#textencoder
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const sharedTextEncoder = new TextEncoder();
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// This threshold should be determined by benchmarking, which might vary in engines and input data.
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// Run `npx ts-node benchmark/encode-string.ts` for details.
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const TEXT_ENCODER_THRESHOLD = 50;
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function utf8EncodeTE(str, output, outputOffset) {
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sharedTextEncoder.encodeInto(str, output.subarray(outputOffset));
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}
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function utf8Encode(str, output, outputOffset) {
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if (str.length > TEXT_ENCODER_THRESHOLD) {
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utf8EncodeTE(str, output, outputOffset);
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}
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else {
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utf8EncodeJs(str, output, outputOffset);
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}
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}
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const CHUNK_SIZE = 4096;
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function utf8DecodeJs(bytes, inputOffset, byteLength) {
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let offset = inputOffset;
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const end = offset + byteLength;
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const units = [];
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let result = "";
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while (offset < end) {
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const byte1 = bytes[offset++];
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if ((byte1 & 0x80) === 0) {
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// 1 byte
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units.push(byte1);
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}
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else if ((byte1 & 0xe0) === 0xc0) {
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// 2 bytes
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const byte2 = bytes[offset++] & 0x3f;
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units.push(((byte1 & 0x1f) << 6) | byte2);
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}
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else if ((byte1 & 0xf0) === 0xe0) {
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// 3 bytes
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const byte2 = bytes[offset++] & 0x3f;
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const byte3 = bytes[offset++] & 0x3f;
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units.push(((byte1 & 0x1f) << 12) | (byte2 << 6) | byte3);
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}
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else if ((byte1 & 0xf8) === 0xf0) {
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// 4 bytes
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const byte2 = bytes[offset++] & 0x3f;
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const byte3 = bytes[offset++] & 0x3f;
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const byte4 = bytes[offset++] & 0x3f;
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let unit = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0c) | (byte3 << 0x06) | byte4;
|
|
if (unit > 0xffff) {
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unit -= 0x10000;
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units.push(((unit >>> 10) & 0x3ff) | 0xd800);
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unit = 0xdc00 | (unit & 0x3ff);
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}
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units.push(unit);
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}
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else {
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units.push(byte1);
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}
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if (units.length >= CHUNK_SIZE) {
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result += String.fromCharCode(...units);
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units.length = 0;
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}
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}
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if (units.length > 0) {
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result += String.fromCharCode(...units);
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}
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return result;
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}
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const sharedTextDecoder = new TextDecoder();
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// This threshold should be determined by benchmarking, which might vary in engines and input data.
|
|
// Run `npx ts-node benchmark/decode-string.ts` for details.
|
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const TEXT_DECODER_THRESHOLD = 200;
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function utf8DecodeTD(bytes, inputOffset, byteLength) {
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const stringBytes = bytes.subarray(inputOffset, inputOffset + byteLength);
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return sharedTextDecoder.decode(stringBytes);
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}
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function utf8Decode(bytes, inputOffset, byteLength) {
|
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if (byteLength > TEXT_DECODER_THRESHOLD) {
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return utf8DecodeTD(bytes, inputOffset, byteLength);
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}
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else {
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return utf8DecodeJs(bytes, inputOffset, byteLength);
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}
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}
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|
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;// ./src/ExtData.ts
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/**
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* ExtData is used to handle Extension Types that are not registered to ExtensionCodec.
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*/
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class ExtData {
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constructor(type, data) {
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this.type = type;
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this.data = data;
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}
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}
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;// ./src/DecodeError.ts
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class DecodeError extends Error {
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constructor(message) {
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super(message);
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// fix the prototype chain in a cross-platform way
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const proto = Object.create(DecodeError.prototype);
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Object.setPrototypeOf(this, proto);
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Object.defineProperty(this, "name", {
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configurable: true,
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|
enumerable: false,
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|
value: DecodeError.name,
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});
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}
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}
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;// ./src/utils/int.ts
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// Integer Utility
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const UINT32_MAX = 4294967295;
|
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// DataView extension to handle int64 / uint64,
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// where the actual range is 53-bits integer (a.k.a. safe integer)
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|
function setUint64(view, offset, value) {
|
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const high = value / 4294967296;
|
|
const low = value; // high bits are truncated by DataView
|
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view.setUint32(offset, high);
|
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view.setUint32(offset + 4, low);
|
|
}
|
|
function setInt64(view, offset, value) {
|
|
const high = Math.floor(value / 4294967296);
|
|
const low = value; // high bits are truncated by DataView
|
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view.setUint32(offset, high);
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view.setUint32(offset + 4, low);
|
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}
|
|
function getInt64(view, offset) {
|
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const high = view.getInt32(offset);
|
|
const low = view.getUint32(offset + 4);
|
|
return high * 4294967296 + low;
|
|
}
|
|
function getUint64(view, offset) {
|
|
const high = view.getUint32(offset);
|
|
const low = view.getUint32(offset + 4);
|
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return high * 4294967296 + low;
|
|
}
|
|
|
|
;// ./src/timestamp.ts
|
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// https://github.com/msgpack/msgpack/blob/master/spec.md#timestamp-extension-type
|
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|
|
|
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const EXT_TIMESTAMP = -1;
|
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const TIMESTAMP32_MAX_SEC = 0x100000000 - 1; // 32-bit unsigned int
|
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const TIMESTAMP64_MAX_SEC = 0x400000000 - 1; // 34-bit unsigned int
|
|
function encodeTimeSpecToTimestamp({ sec, nsec }) {
|
|
if (sec >= 0 && nsec >= 0 && sec <= TIMESTAMP64_MAX_SEC) {
|
|
// Here sec >= 0 && nsec >= 0
|
|
if (nsec === 0 && sec <= TIMESTAMP32_MAX_SEC) {
|
|
// timestamp 32 = { sec32 (unsigned) }
|
|
const rv = new Uint8Array(4);
|
|
const view = new DataView(rv.buffer);
|
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view.setUint32(0, sec);
|
|
return rv;
|
|
}
|
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else {
|
|
// timestamp 64 = { nsec30 (unsigned), sec34 (unsigned) }
|
|
const secHigh = sec / 0x100000000;
|
|
const secLow = sec & 0xffffffff;
|
|
const rv = new Uint8Array(8);
|
|
const view = new DataView(rv.buffer);
|
|
// nsec30 | secHigh2
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view.setUint32(0, (nsec << 2) | (secHigh & 0x3));
|
|
// secLow32
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|
view.setUint32(4, secLow);
|
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return rv;
|
|
}
|
|
}
|
|
else {
|
|
// timestamp 96 = { nsec32 (unsigned), sec64 (signed) }
|
|
const rv = new Uint8Array(12);
|
|
const view = new DataView(rv.buffer);
|
|
view.setUint32(0, nsec);
|
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setInt64(view, 4, sec);
|
|
return rv;
|
|
}
|
|
}
|
|
function encodeDateToTimeSpec(date) {
|
|
const msec = date.getTime();
|
|
const sec = Math.floor(msec / 1e3);
|
|
const nsec = (msec - sec * 1e3) * 1e6;
|
|
// Normalizes { sec, nsec } to ensure nsec is unsigned.
|
|
const nsecInSec = Math.floor(nsec / 1e9);
|
|
return {
|
|
sec: sec + nsecInSec,
|
|
nsec: nsec - nsecInSec * 1e9,
|
|
};
|
|
}
|
|
function encodeTimestampExtension(object) {
|
|
if (object instanceof Date) {
|
|
const timeSpec = encodeDateToTimeSpec(object);
|
|
return encodeTimeSpecToTimestamp(timeSpec);
|
|
}
|
|
else {
|
|
return null;
|
|
}
|
|
}
|
|
function decodeTimestampToTimeSpec(data) {
|
|
const view = new DataView(data.buffer, data.byteOffset, data.byteLength);
|
|
// data may be 32, 64, or 96 bits
|
|
switch (data.byteLength) {
|
|
case 4: {
|
|
// timestamp 32 = { sec32 }
|
|
const sec = view.getUint32(0);
|
|
const nsec = 0;
|
|
return { sec, nsec };
|
|
}
|
|
case 8: {
|
|
// timestamp 64 = { nsec30, sec34 }
|
|
const nsec30AndSecHigh2 = view.getUint32(0);
|
|
const secLow32 = view.getUint32(4);
|
|
const sec = (nsec30AndSecHigh2 & 0x3) * 0x100000000 + secLow32;
|
|
const nsec = nsec30AndSecHigh2 >>> 2;
|
|
return { sec, nsec };
|
|
}
|
|
case 12: {
|
|
// timestamp 96 = { nsec32 (unsigned), sec64 (signed) }
|
|
const sec = getInt64(view, 4);
|
|
const nsec = view.getUint32(0);
|
|
return { sec, nsec };
|
|
}
|
|
default:
|
|
throw new DecodeError(`Unrecognized data size for timestamp (expected 4, 8, or 12): ${data.length}`);
|
|
}
|
|
}
|
|
function decodeTimestampExtension(data) {
|
|
const timeSpec = decodeTimestampToTimeSpec(data);
|
|
return new Date(timeSpec.sec * 1e3 + timeSpec.nsec / 1e6);
|
|
}
|
|
const timestampExtension = {
|
|
type: EXT_TIMESTAMP,
|
|
encode: encodeTimestampExtension,
|
|
decode: decodeTimestampExtension,
|
|
};
|
|
|
|
;// ./src/ExtensionCodec.ts
|
|
// ExtensionCodec to handle MessagePack extensions
|
|
|
|
|
|
class ExtensionCodec {
|
|
constructor() {
|
|
// built-in extensions
|
|
this.builtInEncoders = [];
|
|
this.builtInDecoders = [];
|
|
// custom extensions
|
|
this.encoders = [];
|
|
this.decoders = [];
|
|
this.register(timestampExtension);
|
|
}
|
|
register({ type, encode, decode, }) {
|
|
if (type >= 0) {
|
|
// custom extensions
|
|
this.encoders[type] = encode;
|
|
this.decoders[type] = decode;
|
|
}
|
|
else {
|
|
// built-in extensions
|
|
const index = -1 - type;
|
|
this.builtInEncoders[index] = encode;
|
|
this.builtInDecoders[index] = decode;
|
|
}
|
|
}
|
|
tryToEncode(object, context) {
|
|
// built-in extensions
|
|
for (let i = 0; i < this.builtInEncoders.length; i++) {
|
|
const encodeExt = this.builtInEncoders[i];
|
|
if (encodeExt != null) {
|
|
const data = encodeExt(object, context);
|
|
if (data != null) {
|
|
const type = -1 - i;
|
|
return new ExtData(type, data);
|
|
}
|
|
}
|
|
}
|
|
// custom extensions
|
|
for (let i = 0; i < this.encoders.length; i++) {
|
|
const encodeExt = this.encoders[i];
|
|
if (encodeExt != null) {
|
|
const data = encodeExt(object, context);
|
|
if (data != null) {
|
|
const type = i;
|
|
return new ExtData(type, data);
|
|
}
|
|
}
|
|
}
|
|
if (object instanceof ExtData) {
|
|
// to keep ExtData as is
|
|
return object;
|
|
}
|
|
return null;
|
|
}
|
|
decode(data, type, context) {
|
|
const decodeExt = type < 0 ? this.builtInDecoders[-1 - type] : this.decoders[type];
|
|
if (decodeExt) {
|
|
return decodeExt(data, type, context);
|
|
}
|
|
else {
|
|
// decode() does not fail, returns ExtData instead.
|
|
return new ExtData(type, data);
|
|
}
|
|
}
|
|
}
|
|
ExtensionCodec.defaultCodec = new ExtensionCodec();
|
|
|
|
;// ./src/utils/typedArrays.ts
|
|
function isArrayBufferLike(buffer) {
|
|
return (buffer instanceof ArrayBuffer || (typeof SharedArrayBuffer !== "undefined" && buffer instanceof SharedArrayBuffer));
|
|
}
|
|
function ensureUint8Array(buffer) {
|
|
if (buffer instanceof Uint8Array) {
|
|
return buffer;
|
|
}
|
|
else if (ArrayBuffer.isView(buffer)) {
|
|
return new Uint8Array(buffer.buffer, buffer.byteOffset, buffer.byteLength);
|
|
}
|
|
else if (isArrayBufferLike(buffer)) {
|
|
return new Uint8Array(buffer);
|
|
}
|
|
else {
|
|
// ArrayLike<number>
|
|
return Uint8Array.from(buffer);
|
|
}
|
|
}
|
|
|
|
;// ./src/Encoder.ts
|
|
|
|
|
|
|
|
|
|
const DEFAULT_MAX_DEPTH = 100;
|
|
const DEFAULT_INITIAL_BUFFER_SIZE = 2048;
|
|
class Encoder {
|
|
constructor(options) {
|
|
this.entered = false;
|
|
this.extensionCodec = options?.extensionCodec ?? ExtensionCodec.defaultCodec;
|
|
this.context = options?.context; // needs a type assertion because EncoderOptions has no context property when ContextType is undefined
|
|
this.useBigInt64 = options?.useBigInt64 ?? false;
|
|
this.maxDepth = options?.maxDepth ?? DEFAULT_MAX_DEPTH;
|
|
this.initialBufferSize = options?.initialBufferSize ?? DEFAULT_INITIAL_BUFFER_SIZE;
|
|
this.sortKeys = options?.sortKeys ?? false;
|
|
this.forceFloat32 = options?.forceFloat32 ?? false;
|
|
this.ignoreUndefined = options?.ignoreUndefined ?? false;
|
|
this.forceIntegerToFloat = options?.forceIntegerToFloat ?? false;
|
|
this.pos = 0;
|
|
this.view = new DataView(new ArrayBuffer(this.initialBufferSize));
|
|
this.bytes = new Uint8Array(this.view.buffer);
|
|
}
|
|
clone() {
|
|
// Because of slightly special argument `context`,
|
|
// type assertion is needed.
|
|
// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
|
|
return new Encoder({
|
|
extensionCodec: this.extensionCodec,
|
|
context: this.context,
|
|
useBigInt64: this.useBigInt64,
|
|
maxDepth: this.maxDepth,
|
|
initialBufferSize: this.initialBufferSize,
|
|
sortKeys: this.sortKeys,
|
|
forceFloat32: this.forceFloat32,
|
|
ignoreUndefined: this.ignoreUndefined,
|
|
forceIntegerToFloat: this.forceIntegerToFloat,
|
|
});
|
|
}
|
|
reinitializeState() {
|
|
this.pos = 0;
|
|
}
|
|
/**
|
|
* This is almost equivalent to {@link Encoder#encode}, but it returns an reference of the encoder's internal buffer and thus much faster than {@link Encoder#encode}.
|
|
*
|
|
* @returns Encodes the object and returns a shared reference the encoder's internal buffer.
|
|
*/
|
|
encodeSharedRef(object) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
return instance.encodeSharedRef(object);
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
this.reinitializeState();
|
|
this.doEncode(object, 1);
|
|
return this.bytes.subarray(0, this.pos);
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
/**
|
|
* @returns Encodes the object and returns a copy of the encoder's internal buffer.
|
|
*/
|
|
encode(object) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
return instance.encode(object);
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
this.reinitializeState();
|
|
this.doEncode(object, 1);
|
|
return this.bytes.slice(0, this.pos);
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
doEncode(object, depth) {
|
|
if (depth > this.maxDepth) {
|
|
throw new Error(`Too deep objects in depth ${depth}`);
|
|
}
|
|
if (object == null) {
|
|
this.encodeNil();
|
|
}
|
|
else if (typeof object === "boolean") {
|
|
this.encodeBoolean(object);
|
|
}
|
|
else if (typeof object === "number") {
|
|
if (!this.forceIntegerToFloat) {
|
|
this.encodeNumber(object);
|
|
}
|
|
else {
|
|
this.encodeNumberAsFloat(object);
|
|
}
|
|
}
|
|
else if (typeof object === "string") {
|
|
this.encodeString(object);
|
|
}
|
|
else if (this.useBigInt64 && typeof object === "bigint") {
|
|
this.encodeBigInt64(object);
|
|
}
|
|
else {
|
|
this.encodeObject(object, depth);
|
|
}
|
|
}
|
|
ensureBufferSizeToWrite(sizeToWrite) {
|
|
const requiredSize = this.pos + sizeToWrite;
|
|
if (this.view.byteLength < requiredSize) {
|
|
this.resizeBuffer(requiredSize * 2);
|
|
}
|
|
}
|
|
resizeBuffer(newSize) {
|
|
const newBuffer = new ArrayBuffer(newSize);
|
|
const newBytes = new Uint8Array(newBuffer);
|
|
const newView = new DataView(newBuffer);
|
|
newBytes.set(this.bytes);
|
|
this.view = newView;
|
|
this.bytes = newBytes;
|
|
}
|
|
encodeNil() {
|
|
this.writeU8(0xc0);
|
|
}
|
|
encodeBoolean(object) {
|
|
if (object === false) {
|
|
this.writeU8(0xc2);
|
|
}
|
|
else {
|
|
this.writeU8(0xc3);
|
|
}
|
|
}
|
|
encodeNumber(object) {
|
|
if (!this.forceIntegerToFloat && Number.isSafeInteger(object)) {
|
|
if (object >= 0) {
|
|
if (object < 0x80) {
|
|
// positive fixint
|
|
this.writeU8(object);
|
|
}
|
|
else if (object < 0x100) {
|
|
// uint 8
|
|
this.writeU8(0xcc);
|
|
this.writeU8(object);
|
|
}
|
|
else if (object < 0x10000) {
|
|
// uint 16
|
|
this.writeU8(0xcd);
|
|
this.writeU16(object);
|
|
}
|
|
else if (object < 0x100000000) {
|
|
// uint 32
|
|
this.writeU8(0xce);
|
|
this.writeU32(object);
|
|
}
|
|
else if (!this.useBigInt64) {
|
|
// uint 64
|
|
this.writeU8(0xcf);
|
|
this.writeU64(object);
|
|
}
|
|
else {
|
|
this.encodeNumberAsFloat(object);
|
|
}
|
|
}
|
|
else {
|
|
if (object >= -0x20) {
|
|
// negative fixint
|
|
this.writeU8(0xe0 | (object + 0x20));
|
|
}
|
|
else if (object >= -0x80) {
|
|
// int 8
|
|
this.writeU8(0xd0);
|
|
this.writeI8(object);
|
|
}
|
|
else if (object >= -0x8000) {
|
|
// int 16
|
|
this.writeU8(0xd1);
|
|
this.writeI16(object);
|
|
}
|
|
else if (object >= -0x80000000) {
|
|
// int 32
|
|
this.writeU8(0xd2);
|
|
this.writeI32(object);
|
|
}
|
|
else if (!this.useBigInt64) {
|
|
// int 64
|
|
this.writeU8(0xd3);
|
|
this.writeI64(object);
|
|
}
|
|
else {
|
|
this.encodeNumberAsFloat(object);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
this.encodeNumberAsFloat(object);
|
|
}
|
|
}
|
|
encodeNumberAsFloat(object) {
|
|
if (this.forceFloat32) {
|
|
// float 32
|
|
this.writeU8(0xca);
|
|
this.writeF32(object);
|
|
}
|
|
else {
|
|
// float 64
|
|
this.writeU8(0xcb);
|
|
this.writeF64(object);
|
|
}
|
|
}
|
|
encodeBigInt64(object) {
|
|
if (object >= BigInt(0)) {
|
|
// uint 64
|
|
this.writeU8(0xcf);
|
|
this.writeBigUint64(object);
|
|
}
|
|
else {
|
|
// int 64
|
|
this.writeU8(0xd3);
|
|
this.writeBigInt64(object);
|
|
}
|
|
}
|
|
writeStringHeader(byteLength) {
|
|
if (byteLength < 32) {
|
|
// fixstr
|
|
this.writeU8(0xa0 + byteLength);
|
|
}
|
|
else if (byteLength < 0x100) {
|
|
// str 8
|
|
this.writeU8(0xd9);
|
|
this.writeU8(byteLength);
|
|
}
|
|
else if (byteLength < 0x10000) {
|
|
// str 16
|
|
this.writeU8(0xda);
|
|
this.writeU16(byteLength);
|
|
}
|
|
else if (byteLength < 0x100000000) {
|
|
// str 32
|
|
this.writeU8(0xdb);
|
|
this.writeU32(byteLength);
|
|
}
|
|
else {
|
|
throw new Error(`Too long string: ${byteLength} bytes in UTF-8`);
|
|
}
|
|
}
|
|
encodeString(object) {
|
|
const maxHeaderSize = 1 + 4;
|
|
const byteLength = utf8Count(object);
|
|
this.ensureBufferSizeToWrite(maxHeaderSize + byteLength);
|
|
this.writeStringHeader(byteLength);
|
|
utf8Encode(object, this.bytes, this.pos);
|
|
this.pos += byteLength;
|
|
}
|
|
encodeObject(object, depth) {
|
|
// try to encode objects with custom codec first of non-primitives
|
|
const ext = this.extensionCodec.tryToEncode(object, this.context);
|
|
if (ext != null) {
|
|
this.encodeExtension(ext);
|
|
}
|
|
else if (Array.isArray(object)) {
|
|
this.encodeArray(object, depth);
|
|
}
|
|
else if (ArrayBuffer.isView(object)) {
|
|
this.encodeBinary(object);
|
|
}
|
|
else if (typeof object === "object") {
|
|
this.encodeMap(object, depth);
|
|
}
|
|
else {
|
|
// symbol, function and other special object come here unless extensionCodec handles them.
|
|
throw new Error(`Unrecognized object: ${Object.prototype.toString.apply(object)}`);
|
|
}
|
|
}
|
|
encodeBinary(object) {
|
|
const size = object.byteLength;
|
|
if (size < 0x100) {
|
|
// bin 8
|
|
this.writeU8(0xc4);
|
|
this.writeU8(size);
|
|
}
|
|
else if (size < 0x10000) {
|
|
// bin 16
|
|
this.writeU8(0xc5);
|
|
this.writeU16(size);
|
|
}
|
|
else if (size < 0x100000000) {
|
|
// bin 32
|
|
this.writeU8(0xc6);
|
|
this.writeU32(size);
|
|
}
|
|
else {
|
|
throw new Error(`Too large binary: ${size}`);
|
|
}
|
|
const bytes = ensureUint8Array(object);
|
|
this.writeU8a(bytes);
|
|
}
|
|
encodeArray(object, depth) {
|
|
const size = object.length;
|
|
if (size < 16) {
|
|
// fixarray
|
|
this.writeU8(0x90 + size);
|
|
}
|
|
else if (size < 0x10000) {
|
|
// array 16
|
|
this.writeU8(0xdc);
|
|
this.writeU16(size);
|
|
}
|
|
else if (size < 0x100000000) {
|
|
// array 32
|
|
this.writeU8(0xdd);
|
|
this.writeU32(size);
|
|
}
|
|
else {
|
|
throw new Error(`Too large array: ${size}`);
|
|
}
|
|
for (const item of object) {
|
|
this.doEncode(item, depth + 1);
|
|
}
|
|
}
|
|
countWithoutUndefined(object, keys) {
|
|
let count = 0;
|
|
for (const key of keys) {
|
|
if (object[key] !== undefined) {
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
encodeMap(object, depth) {
|
|
const keys = Object.keys(object);
|
|
if (this.sortKeys) {
|
|
keys.sort();
|
|
}
|
|
const size = this.ignoreUndefined ? this.countWithoutUndefined(object, keys) : keys.length;
|
|
if (size < 16) {
|
|
// fixmap
|
|
this.writeU8(0x80 + size);
|
|
}
|
|
else if (size < 0x10000) {
|
|
// map 16
|
|
this.writeU8(0xde);
|
|
this.writeU16(size);
|
|
}
|
|
else if (size < 0x100000000) {
|
|
// map 32
|
|
this.writeU8(0xdf);
|
|
this.writeU32(size);
|
|
}
|
|
else {
|
|
throw new Error(`Too large map object: ${size}`);
|
|
}
|
|
for (const key of keys) {
|
|
const value = object[key];
|
|
if (!(this.ignoreUndefined && value === undefined)) {
|
|
this.encodeString(key);
|
|
this.doEncode(value, depth + 1);
|
|
}
|
|
}
|
|
}
|
|
encodeExtension(ext) {
|
|
if (typeof ext.data === "function") {
|
|
const data = ext.data(this.pos + 6);
|
|
const size = data.length;
|
|
if (size >= 0x100000000) {
|
|
throw new Error(`Too large extension object: ${size}`);
|
|
}
|
|
this.writeU8(0xc9);
|
|
this.writeU32(size);
|
|
this.writeI8(ext.type);
|
|
this.writeU8a(data);
|
|
return;
|
|
}
|
|
const size = ext.data.length;
|
|
if (size === 1) {
|
|
// fixext 1
|
|
this.writeU8(0xd4);
|
|
}
|
|
else if (size === 2) {
|
|
// fixext 2
|
|
this.writeU8(0xd5);
|
|
}
|
|
else if (size === 4) {
|
|
// fixext 4
|
|
this.writeU8(0xd6);
|
|
}
|
|
else if (size === 8) {
|
|
// fixext 8
|
|
this.writeU8(0xd7);
|
|
}
|
|
else if (size === 16) {
|
|
// fixext 16
|
|
this.writeU8(0xd8);
|
|
}
|
|
else if (size < 0x100) {
|
|
// ext 8
|
|
this.writeU8(0xc7);
|
|
this.writeU8(size);
|
|
}
|
|
else if (size < 0x10000) {
|
|
// ext 16
|
|
this.writeU8(0xc8);
|
|
this.writeU16(size);
|
|
}
|
|
else if (size < 0x100000000) {
|
|
// ext 32
|
|
this.writeU8(0xc9);
|
|
this.writeU32(size);
|
|
}
|
|
else {
|
|
throw new Error(`Too large extension object: ${size}`);
|
|
}
|
|
this.writeI8(ext.type);
|
|
this.writeU8a(ext.data);
|
|
}
|
|
writeU8(value) {
|
|
this.ensureBufferSizeToWrite(1);
|
|
this.view.setUint8(this.pos, value);
|
|
this.pos++;
|
|
}
|
|
writeU8a(values) {
|
|
const size = values.length;
|
|
this.ensureBufferSizeToWrite(size);
|
|
this.bytes.set(values, this.pos);
|
|
this.pos += size;
|
|
}
|
|
writeI8(value) {
|
|
this.ensureBufferSizeToWrite(1);
|
|
this.view.setInt8(this.pos, value);
|
|
this.pos++;
|
|
}
|
|
writeU16(value) {
|
|
this.ensureBufferSizeToWrite(2);
|
|
this.view.setUint16(this.pos, value);
|
|
this.pos += 2;
|
|
}
|
|
writeI16(value) {
|
|
this.ensureBufferSizeToWrite(2);
|
|
this.view.setInt16(this.pos, value);
|
|
this.pos += 2;
|
|
}
|
|
writeU32(value) {
|
|
this.ensureBufferSizeToWrite(4);
|
|
this.view.setUint32(this.pos, value);
|
|
this.pos += 4;
|
|
}
|
|
writeI32(value) {
|
|
this.ensureBufferSizeToWrite(4);
|
|
this.view.setInt32(this.pos, value);
|
|
this.pos += 4;
|
|
}
|
|
writeF32(value) {
|
|
this.ensureBufferSizeToWrite(4);
|
|
this.view.setFloat32(this.pos, value);
|
|
this.pos += 4;
|
|
}
|
|
writeF64(value) {
|
|
this.ensureBufferSizeToWrite(8);
|
|
this.view.setFloat64(this.pos, value);
|
|
this.pos += 8;
|
|
}
|
|
writeU64(value) {
|
|
this.ensureBufferSizeToWrite(8);
|
|
setUint64(this.view, this.pos, value);
|
|
this.pos += 8;
|
|
}
|
|
writeI64(value) {
|
|
this.ensureBufferSizeToWrite(8);
|
|
setInt64(this.view, this.pos, value);
|
|
this.pos += 8;
|
|
}
|
|
writeBigUint64(value) {
|
|
this.ensureBufferSizeToWrite(8);
|
|
this.view.setBigUint64(this.pos, value);
|
|
this.pos += 8;
|
|
}
|
|
writeBigInt64(value) {
|
|
this.ensureBufferSizeToWrite(8);
|
|
this.view.setBigInt64(this.pos, value);
|
|
this.pos += 8;
|
|
}
|
|
}
|
|
|
|
;// ./src/encode.ts
|
|
|
|
/**
|
|
* It encodes `value` in the MessagePack format and
|
|
* returns a byte buffer.
|
|
*
|
|
* The returned buffer is a slice of a larger `ArrayBuffer`, so you have to use its `#byteOffset` and `#byteLength` in order to convert it to another typed arrays including NodeJS `Buffer`.
|
|
*/
|
|
function encode(value, options) {
|
|
const encoder = new Encoder(options);
|
|
return encoder.encodeSharedRef(value);
|
|
}
|
|
|
|
;// ./src/utils/prettyByte.ts
|
|
function prettyByte(byte) {
|
|
return `${byte < 0 ? "-" : ""}0x${Math.abs(byte).toString(16).padStart(2, "0")}`;
|
|
}
|
|
|
|
;// ./src/CachedKeyDecoder.ts
|
|
|
|
const DEFAULT_MAX_KEY_LENGTH = 16;
|
|
const DEFAULT_MAX_LENGTH_PER_KEY = 16;
|
|
class CachedKeyDecoder {
|
|
constructor(maxKeyLength = DEFAULT_MAX_KEY_LENGTH, maxLengthPerKey = DEFAULT_MAX_LENGTH_PER_KEY) {
|
|
this.hit = 0;
|
|
this.miss = 0;
|
|
this.maxKeyLength = maxKeyLength;
|
|
this.maxLengthPerKey = maxLengthPerKey;
|
|
// avoid `new Array(N)`, which makes a sparse array,
|
|
// because a sparse array is typically slower than a non-sparse array.
|
|
this.caches = [];
|
|
for (let i = 0; i < this.maxKeyLength; i++) {
|
|
this.caches.push([]);
|
|
}
|
|
}
|
|
canBeCached(byteLength) {
|
|
return byteLength > 0 && byteLength <= this.maxKeyLength;
|
|
}
|
|
find(bytes, inputOffset, byteLength) {
|
|
const records = this.caches[byteLength - 1];
|
|
FIND_CHUNK: for (const record of records) {
|
|
const recordBytes = record.bytes;
|
|
for (let j = 0; j < byteLength; j++) {
|
|
if (recordBytes[j] !== bytes[inputOffset + j]) {
|
|
continue FIND_CHUNK;
|
|
}
|
|
}
|
|
return record.str;
|
|
}
|
|
return null;
|
|
}
|
|
store(bytes, value) {
|
|
const records = this.caches[bytes.length - 1];
|
|
const record = { bytes, str: value };
|
|
if (records.length >= this.maxLengthPerKey) {
|
|
// `records` are full!
|
|
// Set `record` to an arbitrary position.
|
|
records[(Math.random() * records.length) | 0] = record;
|
|
}
|
|
else {
|
|
records.push(record);
|
|
}
|
|
}
|
|
decode(bytes, inputOffset, byteLength) {
|
|
const cachedValue = this.find(bytes, inputOffset, byteLength);
|
|
if (cachedValue != null) {
|
|
this.hit++;
|
|
return cachedValue;
|
|
}
|
|
this.miss++;
|
|
const str = utf8DecodeJs(bytes, inputOffset, byteLength);
|
|
// Ensure to copy a slice of bytes because the bytes may be a NodeJS Buffer and Buffer#slice() returns a reference to its internal ArrayBuffer.
|
|
const slicedCopyOfBytes = Uint8Array.prototype.slice.call(bytes, inputOffset, inputOffset + byteLength);
|
|
this.store(slicedCopyOfBytes, str);
|
|
return str;
|
|
}
|
|
}
|
|
|
|
;// ./src/Decoder.ts
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
const STATE_ARRAY = "array";
|
|
const STATE_MAP_KEY = "map_key";
|
|
const STATE_MAP_VALUE = "map_value";
|
|
const mapKeyConverter = (key) => {
|
|
if (typeof key === "string" || typeof key === "number") {
|
|
return key;
|
|
}
|
|
throw new DecodeError("The type of key must be string or number but " + typeof key);
|
|
};
|
|
class StackPool {
|
|
constructor() {
|
|
this.stack = [];
|
|
this.stackHeadPosition = -1;
|
|
}
|
|
get length() {
|
|
return this.stackHeadPosition + 1;
|
|
}
|
|
top() {
|
|
return this.stack[this.stackHeadPosition];
|
|
}
|
|
pushArrayState(size) {
|
|
const state = this.getUninitializedStateFromPool();
|
|
state.type = STATE_ARRAY;
|
|
state.position = 0;
|
|
state.size = size;
|
|
state.array = new Array(size);
|
|
}
|
|
pushMapState(size) {
|
|
const state = this.getUninitializedStateFromPool();
|
|
state.type = STATE_MAP_KEY;
|
|
state.readCount = 0;
|
|
state.size = size;
|
|
state.map = {};
|
|
}
|
|
getUninitializedStateFromPool() {
|
|
this.stackHeadPosition++;
|
|
if (this.stackHeadPosition === this.stack.length) {
|
|
const partialState = {
|
|
type: undefined,
|
|
size: 0,
|
|
array: undefined,
|
|
position: 0,
|
|
readCount: 0,
|
|
map: undefined,
|
|
key: null,
|
|
};
|
|
this.stack.push(partialState);
|
|
}
|
|
return this.stack[this.stackHeadPosition];
|
|
}
|
|
release(state) {
|
|
const topStackState = this.stack[this.stackHeadPosition];
|
|
if (topStackState !== state) {
|
|
throw new Error("Invalid stack state. Released state is not on top of the stack.");
|
|
}
|
|
if (state.type === STATE_ARRAY) {
|
|
const partialState = state;
|
|
partialState.size = 0;
|
|
partialState.array = undefined;
|
|
partialState.position = 0;
|
|
partialState.type = undefined;
|
|
}
|
|
if (state.type === STATE_MAP_KEY || state.type === STATE_MAP_VALUE) {
|
|
const partialState = state;
|
|
partialState.size = 0;
|
|
partialState.map = undefined;
|
|
partialState.readCount = 0;
|
|
partialState.type = undefined;
|
|
}
|
|
this.stackHeadPosition--;
|
|
}
|
|
reset() {
|
|
this.stack.length = 0;
|
|
this.stackHeadPosition = -1;
|
|
}
|
|
}
|
|
const HEAD_BYTE_REQUIRED = -1;
|
|
const EMPTY_VIEW = new DataView(new ArrayBuffer(0));
|
|
const EMPTY_BYTES = new Uint8Array(EMPTY_VIEW.buffer);
|
|
try {
|
|
// IE11: The spec says it should throw RangeError,
|
|
// IE11: but in IE11 it throws TypeError.
|
|
EMPTY_VIEW.getInt8(0);
|
|
}
|
|
catch (e) {
|
|
if (!(e instanceof RangeError)) {
|
|
throw new Error("This module is not supported in the current JavaScript engine because DataView does not throw RangeError on out-of-bounds access");
|
|
}
|
|
}
|
|
const MORE_DATA = new RangeError("Insufficient data");
|
|
const sharedCachedKeyDecoder = new CachedKeyDecoder();
|
|
class Decoder {
|
|
constructor(options) {
|
|
this.totalPos = 0;
|
|
this.pos = 0;
|
|
this.view = EMPTY_VIEW;
|
|
this.bytes = EMPTY_BYTES;
|
|
this.headByte = HEAD_BYTE_REQUIRED;
|
|
this.stack = new StackPool();
|
|
this.entered = false;
|
|
this.extensionCodec = options?.extensionCodec ?? ExtensionCodec.defaultCodec;
|
|
this.context = options?.context; // needs a type assertion because EncoderOptions has no context property when ContextType is undefined
|
|
this.useBigInt64 = options?.useBigInt64 ?? false;
|
|
this.rawStrings = options?.rawStrings ?? false;
|
|
this.maxStrLength = options?.maxStrLength ?? UINT32_MAX;
|
|
this.maxBinLength = options?.maxBinLength ?? UINT32_MAX;
|
|
this.maxArrayLength = options?.maxArrayLength ?? UINT32_MAX;
|
|
this.maxMapLength = options?.maxMapLength ?? UINT32_MAX;
|
|
this.maxExtLength = options?.maxExtLength ?? UINT32_MAX;
|
|
this.keyDecoder = options?.keyDecoder !== undefined ? options.keyDecoder : sharedCachedKeyDecoder;
|
|
this.mapKeyConverter = options?.mapKeyConverter ?? mapKeyConverter;
|
|
}
|
|
clone() {
|
|
// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
|
|
return new Decoder({
|
|
extensionCodec: this.extensionCodec,
|
|
context: this.context,
|
|
useBigInt64: this.useBigInt64,
|
|
rawStrings: this.rawStrings,
|
|
maxStrLength: this.maxStrLength,
|
|
maxBinLength: this.maxBinLength,
|
|
maxArrayLength: this.maxArrayLength,
|
|
maxMapLength: this.maxMapLength,
|
|
maxExtLength: this.maxExtLength,
|
|
keyDecoder: this.keyDecoder,
|
|
});
|
|
}
|
|
reinitializeState() {
|
|
this.totalPos = 0;
|
|
this.headByte = HEAD_BYTE_REQUIRED;
|
|
this.stack.reset();
|
|
// view, bytes, and pos will be re-initialized in setBuffer()
|
|
}
|
|
setBuffer(buffer) {
|
|
const bytes = ensureUint8Array(buffer);
|
|
this.bytes = bytes;
|
|
this.view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
|
|
this.pos = 0;
|
|
}
|
|
appendBuffer(buffer) {
|
|
if (this.headByte === HEAD_BYTE_REQUIRED && !this.hasRemaining(1)) {
|
|
this.setBuffer(buffer);
|
|
}
|
|
else {
|
|
const remainingData = this.bytes.subarray(this.pos);
|
|
const newData = ensureUint8Array(buffer);
|
|
// concat remainingData + newData
|
|
const newBuffer = new Uint8Array(remainingData.length + newData.length);
|
|
newBuffer.set(remainingData);
|
|
newBuffer.set(newData, remainingData.length);
|
|
this.setBuffer(newBuffer);
|
|
}
|
|
}
|
|
hasRemaining(size) {
|
|
return this.view.byteLength - this.pos >= size;
|
|
}
|
|
createExtraByteError(posToShow) {
|
|
const { view, pos } = this;
|
|
return new RangeError(`Extra ${view.byteLength - pos} of ${view.byteLength} byte(s) found at buffer[${posToShow}]`);
|
|
}
|
|
/**
|
|
* @throws {@link DecodeError}
|
|
* @throws {@link RangeError}
|
|
*/
|
|
decode(buffer) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
return instance.decode(buffer);
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
this.reinitializeState();
|
|
this.setBuffer(buffer);
|
|
const object = this.doDecodeSync();
|
|
if (this.hasRemaining(1)) {
|
|
throw this.createExtraByteError(this.pos);
|
|
}
|
|
return object;
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
*decodeMulti(buffer) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
yield* instance.decodeMulti(buffer);
|
|
return;
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
this.reinitializeState();
|
|
this.setBuffer(buffer);
|
|
while (this.hasRemaining(1)) {
|
|
yield this.doDecodeSync();
|
|
}
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
async decodeAsync(stream) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
return instance.decodeAsync(stream);
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
let decoded = false;
|
|
let object;
|
|
for await (const buffer of stream) {
|
|
if (decoded) {
|
|
this.entered = false;
|
|
throw this.createExtraByteError(this.totalPos);
|
|
}
|
|
this.appendBuffer(buffer);
|
|
try {
|
|
object = this.doDecodeSync();
|
|
decoded = true;
|
|
}
|
|
catch (e) {
|
|
if (!(e instanceof RangeError)) {
|
|
throw e; // rethrow
|
|
}
|
|
// fallthrough
|
|
}
|
|
this.totalPos += this.pos;
|
|
}
|
|
if (decoded) {
|
|
if (this.hasRemaining(1)) {
|
|
throw this.createExtraByteError(this.totalPos);
|
|
}
|
|
return object;
|
|
}
|
|
const { headByte, pos, totalPos } = this;
|
|
throw new RangeError(`Insufficient data in parsing ${prettyByte(headByte)} at ${totalPos} (${pos} in the current buffer)`);
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
decodeArrayStream(stream) {
|
|
return this.decodeMultiAsync(stream, true);
|
|
}
|
|
decodeStream(stream) {
|
|
return this.decodeMultiAsync(stream, false);
|
|
}
|
|
async *decodeMultiAsync(stream, isArray) {
|
|
if (this.entered) {
|
|
const instance = this.clone();
|
|
yield* instance.decodeMultiAsync(stream, isArray);
|
|
return;
|
|
}
|
|
try {
|
|
this.entered = true;
|
|
let isArrayHeaderRequired = isArray;
|
|
let arrayItemsLeft = -1;
|
|
for await (const buffer of stream) {
|
|
if (isArray && arrayItemsLeft === 0) {
|
|
throw this.createExtraByteError(this.totalPos);
|
|
}
|
|
this.appendBuffer(buffer);
|
|
if (isArrayHeaderRequired) {
|
|
arrayItemsLeft = this.readArraySize();
|
|
isArrayHeaderRequired = false;
|
|
this.complete();
|
|
}
|
|
try {
|
|
while (true) {
|
|
yield this.doDecodeSync();
|
|
if (--arrayItemsLeft === 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
catch (e) {
|
|
if (!(e instanceof RangeError)) {
|
|
throw e; // rethrow
|
|
}
|
|
// fallthrough
|
|
}
|
|
this.totalPos += this.pos;
|
|
}
|
|
}
|
|
finally {
|
|
this.entered = false;
|
|
}
|
|
}
|
|
doDecodeSync() {
|
|
DECODE: while (true) {
|
|
const headByte = this.readHeadByte();
|
|
let object;
|
|
if (headByte >= 0xe0) {
|
|
// negative fixint (111x xxxx) 0xe0 - 0xff
|
|
object = headByte - 0x100;
|
|
}
|
|
else if (headByte < 0xc0) {
|
|
if (headByte < 0x80) {
|
|
// positive fixint (0xxx xxxx) 0x00 - 0x7f
|
|
object = headByte;
|
|
}
|
|
else if (headByte < 0x90) {
|
|
// fixmap (1000 xxxx) 0x80 - 0x8f
|
|
const size = headByte - 0x80;
|
|
if (size !== 0) {
|
|
this.pushMapState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = {};
|
|
}
|
|
}
|
|
else if (headByte < 0xa0) {
|
|
// fixarray (1001 xxxx) 0x90 - 0x9f
|
|
const size = headByte - 0x90;
|
|
if (size !== 0) {
|
|
this.pushArrayState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = [];
|
|
}
|
|
}
|
|
else {
|
|
// fixstr (101x xxxx) 0xa0 - 0xbf
|
|
const byteLength = headByte - 0xa0;
|
|
object = this.decodeString(byteLength, 0);
|
|
}
|
|
}
|
|
else if (headByte === 0xc0) {
|
|
// nil
|
|
object = null;
|
|
}
|
|
else if (headByte === 0xc2) {
|
|
// false
|
|
object = false;
|
|
}
|
|
else if (headByte === 0xc3) {
|
|
// true
|
|
object = true;
|
|
}
|
|
else if (headByte === 0xca) {
|
|
// float 32
|
|
object = this.readF32();
|
|
}
|
|
else if (headByte === 0xcb) {
|
|
// float 64
|
|
object = this.readF64();
|
|
}
|
|
else if (headByte === 0xcc) {
|
|
// uint 8
|
|
object = this.readU8();
|
|
}
|
|
else if (headByte === 0xcd) {
|
|
// uint 16
|
|
object = this.readU16();
|
|
}
|
|
else if (headByte === 0xce) {
|
|
// uint 32
|
|
object = this.readU32();
|
|
}
|
|
else if (headByte === 0xcf) {
|
|
// uint 64
|
|
if (this.useBigInt64) {
|
|
object = this.readU64AsBigInt();
|
|
}
|
|
else {
|
|
object = this.readU64();
|
|
}
|
|
}
|
|
else if (headByte === 0xd0) {
|
|
// int 8
|
|
object = this.readI8();
|
|
}
|
|
else if (headByte === 0xd1) {
|
|
// int 16
|
|
object = this.readI16();
|
|
}
|
|
else if (headByte === 0xd2) {
|
|
// int 32
|
|
object = this.readI32();
|
|
}
|
|
else if (headByte === 0xd3) {
|
|
// int 64
|
|
if (this.useBigInt64) {
|
|
object = this.readI64AsBigInt();
|
|
}
|
|
else {
|
|
object = this.readI64();
|
|
}
|
|
}
|
|
else if (headByte === 0xd9) {
|
|
// str 8
|
|
const byteLength = this.lookU8();
|
|
object = this.decodeString(byteLength, 1);
|
|
}
|
|
else if (headByte === 0xda) {
|
|
// str 16
|
|
const byteLength = this.lookU16();
|
|
object = this.decodeString(byteLength, 2);
|
|
}
|
|
else if (headByte === 0xdb) {
|
|
// str 32
|
|
const byteLength = this.lookU32();
|
|
object = this.decodeString(byteLength, 4);
|
|
}
|
|
else if (headByte === 0xdc) {
|
|
// array 16
|
|
const size = this.readU16();
|
|
if (size !== 0) {
|
|
this.pushArrayState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = [];
|
|
}
|
|
}
|
|
else if (headByte === 0xdd) {
|
|
// array 32
|
|
const size = this.readU32();
|
|
if (size !== 0) {
|
|
this.pushArrayState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = [];
|
|
}
|
|
}
|
|
else if (headByte === 0xde) {
|
|
// map 16
|
|
const size = this.readU16();
|
|
if (size !== 0) {
|
|
this.pushMapState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = {};
|
|
}
|
|
}
|
|
else if (headByte === 0xdf) {
|
|
// map 32
|
|
const size = this.readU32();
|
|
if (size !== 0) {
|
|
this.pushMapState(size);
|
|
this.complete();
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
object = {};
|
|
}
|
|
}
|
|
else if (headByte === 0xc4) {
|
|
// bin 8
|
|
const size = this.lookU8();
|
|
object = this.decodeBinary(size, 1);
|
|
}
|
|
else if (headByte === 0xc5) {
|
|
// bin 16
|
|
const size = this.lookU16();
|
|
object = this.decodeBinary(size, 2);
|
|
}
|
|
else if (headByte === 0xc6) {
|
|
// bin 32
|
|
const size = this.lookU32();
|
|
object = this.decodeBinary(size, 4);
|
|
}
|
|
else if (headByte === 0xd4) {
|
|
// fixext 1
|
|
object = this.decodeExtension(1, 0);
|
|
}
|
|
else if (headByte === 0xd5) {
|
|
// fixext 2
|
|
object = this.decodeExtension(2, 0);
|
|
}
|
|
else if (headByte === 0xd6) {
|
|
// fixext 4
|
|
object = this.decodeExtension(4, 0);
|
|
}
|
|
else if (headByte === 0xd7) {
|
|
// fixext 8
|
|
object = this.decodeExtension(8, 0);
|
|
}
|
|
else if (headByte === 0xd8) {
|
|
// fixext 16
|
|
object = this.decodeExtension(16, 0);
|
|
}
|
|
else if (headByte === 0xc7) {
|
|
// ext 8
|
|
const size = this.lookU8();
|
|
object = this.decodeExtension(size, 1);
|
|
}
|
|
else if (headByte === 0xc8) {
|
|
// ext 16
|
|
const size = this.lookU16();
|
|
object = this.decodeExtension(size, 2);
|
|
}
|
|
else if (headByte === 0xc9) {
|
|
// ext 32
|
|
const size = this.lookU32();
|
|
object = this.decodeExtension(size, 4);
|
|
}
|
|
else {
|
|
throw new DecodeError(`Unrecognized type byte: ${prettyByte(headByte)}`);
|
|
}
|
|
this.complete();
|
|
const stack = this.stack;
|
|
while (stack.length > 0) {
|
|
// arrays and maps
|
|
const state = stack.top();
|
|
if (state.type === STATE_ARRAY) {
|
|
state.array[state.position] = object;
|
|
state.position++;
|
|
if (state.position === state.size) {
|
|
object = state.array;
|
|
stack.release(state);
|
|
}
|
|
else {
|
|
continue DECODE;
|
|
}
|
|
}
|
|
else if (state.type === STATE_MAP_KEY) {
|
|
if (object === "__proto__") {
|
|
throw new DecodeError("The key __proto__ is not allowed");
|
|
}
|
|
state.key = this.mapKeyConverter(object);
|
|
state.type = STATE_MAP_VALUE;
|
|
continue DECODE;
|
|
}
|
|
else {
|
|
// it must be `state.type === State.MAP_VALUE` here
|
|
state.map[state.key] = object;
|
|
state.readCount++;
|
|
if (state.readCount === state.size) {
|
|
object = state.map;
|
|
stack.release(state);
|
|
}
|
|
else {
|
|
state.key = null;
|
|
state.type = STATE_MAP_KEY;
|
|
continue DECODE;
|
|
}
|
|
}
|
|
}
|
|
return object;
|
|
}
|
|
}
|
|
readHeadByte() {
|
|
if (this.headByte === HEAD_BYTE_REQUIRED) {
|
|
this.headByte = this.readU8();
|
|
// console.log("headByte", prettyByte(this.headByte));
|
|
}
|
|
return this.headByte;
|
|
}
|
|
complete() {
|
|
this.headByte = HEAD_BYTE_REQUIRED;
|
|
}
|
|
readArraySize() {
|
|
const headByte = this.readHeadByte();
|
|
switch (headByte) {
|
|
case 0xdc:
|
|
return this.readU16();
|
|
case 0xdd:
|
|
return this.readU32();
|
|
default: {
|
|
if (headByte < 0xa0) {
|
|
return headByte - 0x90;
|
|
}
|
|
else {
|
|
throw new DecodeError(`Unrecognized array type byte: ${prettyByte(headByte)}`);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
pushMapState(size) {
|
|
if (size > this.maxMapLength) {
|
|
throw new DecodeError(`Max length exceeded: map length (${size}) > maxMapLengthLength (${this.maxMapLength})`);
|
|
}
|
|
this.stack.pushMapState(size);
|
|
}
|
|
pushArrayState(size) {
|
|
if (size > this.maxArrayLength) {
|
|
throw new DecodeError(`Max length exceeded: array length (${size}) > maxArrayLength (${this.maxArrayLength})`);
|
|
}
|
|
this.stack.pushArrayState(size);
|
|
}
|
|
decodeString(byteLength, headerOffset) {
|
|
if (!this.rawStrings || this.stateIsMapKey()) {
|
|
return this.decodeUtf8String(byteLength, headerOffset);
|
|
}
|
|
return this.decodeBinary(byteLength, headerOffset);
|
|
}
|
|
/**
|
|
* @throws {@link RangeError}
|
|
*/
|
|
decodeUtf8String(byteLength, headerOffset) {
|
|
if (byteLength > this.maxStrLength) {
|
|
throw new DecodeError(`Max length exceeded: UTF-8 byte length (${byteLength}) > maxStrLength (${this.maxStrLength})`);
|
|
}
|
|
if (this.bytes.byteLength < this.pos + headerOffset + byteLength) {
|
|
throw MORE_DATA;
|
|
}
|
|
const offset = this.pos + headerOffset;
|
|
let object;
|
|
if (this.stateIsMapKey() && this.keyDecoder?.canBeCached(byteLength)) {
|
|
object = this.keyDecoder.decode(this.bytes, offset, byteLength);
|
|
}
|
|
else {
|
|
object = utf8Decode(this.bytes, offset, byteLength);
|
|
}
|
|
this.pos += headerOffset + byteLength;
|
|
return object;
|
|
}
|
|
stateIsMapKey() {
|
|
if (this.stack.length > 0) {
|
|
const state = this.stack.top();
|
|
return state.type === STATE_MAP_KEY;
|
|
}
|
|
return false;
|
|
}
|
|
/**
|
|
* @throws {@link RangeError}
|
|
*/
|
|
decodeBinary(byteLength, headOffset) {
|
|
if (byteLength > this.maxBinLength) {
|
|
throw new DecodeError(`Max length exceeded: bin length (${byteLength}) > maxBinLength (${this.maxBinLength})`);
|
|
}
|
|
if (!this.hasRemaining(byteLength + headOffset)) {
|
|
throw MORE_DATA;
|
|
}
|
|
const offset = this.pos + headOffset;
|
|
const object = this.bytes.subarray(offset, offset + byteLength);
|
|
this.pos += headOffset + byteLength;
|
|
return object;
|
|
}
|
|
decodeExtension(size, headOffset) {
|
|
if (size > this.maxExtLength) {
|
|
throw new DecodeError(`Max length exceeded: ext length (${size}) > maxExtLength (${this.maxExtLength})`);
|
|
}
|
|
const extType = this.view.getInt8(this.pos + headOffset);
|
|
const data = this.decodeBinary(size, headOffset + 1 /* extType */);
|
|
return this.extensionCodec.decode(data, extType, this.context);
|
|
}
|
|
lookU8() {
|
|
return this.view.getUint8(this.pos);
|
|
}
|
|
lookU16() {
|
|
return this.view.getUint16(this.pos);
|
|
}
|
|
lookU32() {
|
|
return this.view.getUint32(this.pos);
|
|
}
|
|
readU8() {
|
|
const value = this.view.getUint8(this.pos);
|
|
this.pos++;
|
|
return value;
|
|
}
|
|
readI8() {
|
|
const value = this.view.getInt8(this.pos);
|
|
this.pos++;
|
|
return value;
|
|
}
|
|
readU16() {
|
|
const value = this.view.getUint16(this.pos);
|
|
this.pos += 2;
|
|
return value;
|
|
}
|
|
readI16() {
|
|
const value = this.view.getInt16(this.pos);
|
|
this.pos += 2;
|
|
return value;
|
|
}
|
|
readU32() {
|
|
const value = this.view.getUint32(this.pos);
|
|
this.pos += 4;
|
|
return value;
|
|
}
|
|
readI32() {
|
|
const value = this.view.getInt32(this.pos);
|
|
this.pos += 4;
|
|
return value;
|
|
}
|
|
readU64() {
|
|
const value = getUint64(this.view, this.pos);
|
|
this.pos += 8;
|
|
return value;
|
|
}
|
|
readI64() {
|
|
const value = getInt64(this.view, this.pos);
|
|
this.pos += 8;
|
|
return value;
|
|
}
|
|
readU64AsBigInt() {
|
|
const value = this.view.getBigUint64(this.pos);
|
|
this.pos += 8;
|
|
return value;
|
|
}
|
|
readI64AsBigInt() {
|
|
const value = this.view.getBigInt64(this.pos);
|
|
this.pos += 8;
|
|
return value;
|
|
}
|
|
readF32() {
|
|
const value = this.view.getFloat32(this.pos);
|
|
this.pos += 4;
|
|
return value;
|
|
}
|
|
readF64() {
|
|
const value = this.view.getFloat64(this.pos);
|
|
this.pos += 8;
|
|
return value;
|
|
}
|
|
}
|
|
|
|
;// ./src/decode.ts
|
|
|
|
/**
|
|
* It decodes a single MessagePack object in a buffer.
|
|
*
|
|
* This is a synchronous decoding function.
|
|
* See other variants for asynchronous decoding: {@link decodeAsync}, {@link decodeMultiStream}, or {@link decodeArrayStream}.
|
|
*
|
|
* @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.
|
|
* @throws {@link DecodeError} if the buffer contains invalid data.
|
|
*/
|
|
function decode(buffer, options) {
|
|
const decoder = new Decoder(options);
|
|
return decoder.decode(buffer);
|
|
}
|
|
/**
|
|
* It decodes multiple MessagePack objects in a buffer.
|
|
* This is corresponding to {@link decodeMultiStream}.
|
|
*
|
|
* @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.
|
|
* @throws {@link DecodeError} if the buffer contains invalid data.
|
|
*/
|
|
function decodeMulti(buffer, options) {
|
|
const decoder = new Decoder(options);
|
|
return decoder.decodeMulti(buffer);
|
|
}
|
|
|
|
;// ./src/utils/stream.ts
|
|
// utility for whatwg streams
|
|
function isAsyncIterable(object) {
|
|
return object[Symbol.asyncIterator] != null;
|
|
}
|
|
async function* asyncIterableFromStream(stream) {
|
|
const reader = stream.getReader();
|
|
try {
|
|
while (true) {
|
|
const { done, value } = await reader.read();
|
|
if (done) {
|
|
return;
|
|
}
|
|
yield value;
|
|
}
|
|
}
|
|
finally {
|
|
reader.releaseLock();
|
|
}
|
|
}
|
|
function ensureAsyncIterable(streamLike) {
|
|
if (isAsyncIterable(streamLike)) {
|
|
return streamLike;
|
|
}
|
|
else {
|
|
return asyncIterableFromStream(streamLike);
|
|
}
|
|
}
|
|
|
|
;// ./src/decodeAsync.ts
|
|
|
|
|
|
/**
|
|
* @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.
|
|
* @throws {@link DecodeError} if the buffer contains invalid data.
|
|
*/
|
|
async function decodeAsync(streamLike, options) {
|
|
const stream = ensureAsyncIterable(streamLike);
|
|
const decoder = new Decoder(options);
|
|
return decoder.decodeAsync(stream);
|
|
}
|
|
/**
|
|
* @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.
|
|
* @throws {@link DecodeError} if the buffer contains invalid data.
|
|
*/
|
|
function decodeArrayStream(streamLike, options) {
|
|
const stream = ensureAsyncIterable(streamLike);
|
|
const decoder = new Decoder(options);
|
|
return decoder.decodeArrayStream(stream);
|
|
}
|
|
/**
|
|
* @throws {@link RangeError} if the buffer is incomplete, including the case where the buffer is empty.
|
|
* @throws {@link DecodeError} if the buffer contains invalid data.
|
|
*/
|
|
function decodeMultiStream(streamLike, options) {
|
|
const stream = ensureAsyncIterable(streamLike);
|
|
const decoder = new Decoder(options);
|
|
return decoder.decodeStream(stream);
|
|
}
|
|
|
|
;// ./src/index.ts
|
|
// Main Functions:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Utilities for Extension Types:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/******/ return __webpack_exports__;
|
|
/******/ })()
|
|
;
|
|
});
|
|
//# sourceMappingURL=msgpack.js.map
|