734 lines
30 KiB
JavaScript
734 lines
30 KiB
JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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var __asyncValues = (this && this.__asyncValues) || function (o) {
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if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
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var m = o[Symbol.asyncIterator], i;
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return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
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function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
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function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
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};
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var __await = (this && this.__await) || function (v) { return this instanceof __await ? (this.v = v, this) : new __await(v); }
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var __asyncGenerator = (this && this.__asyncGenerator) || function (thisArg, _arguments, generator) {
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if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
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var g = generator.apply(thisArg, _arguments || []), i, q = [];
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return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
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function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
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function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
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function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
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function fulfill(value) { resume("next", value); }
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function reject(value) { resume("throw", value); }
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function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
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};
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import { prettyByte } from "./utils/prettyByte.mjs";
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import { ExtensionCodec } from "./ExtensionCodec.mjs";
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import { getInt64, getUint64, UINT32_MAX } from "./utils/int.mjs";
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import { utf8DecodeJs, TEXT_DECODER_THRESHOLD, utf8DecodeTD } from "./utils/utf8.mjs";
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import { createDataView, ensureUint8Array } from "./utils/typedArrays.mjs";
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import { CachedKeyDecoder } from "./CachedKeyDecoder.mjs";
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import { DecodeError } from "./DecodeError.mjs";
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var isValidMapKeyType = function (key) {
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var keyType = typeof key;
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return keyType === "string" || keyType === "number";
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};
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var HEAD_BYTE_REQUIRED = -1;
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var EMPTY_VIEW = new DataView(new ArrayBuffer(0));
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var EMPTY_BYTES = new Uint8Array(EMPTY_VIEW.buffer);
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// IE11: Hack to support IE11.
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// IE11: Drop this hack and just use RangeError when IE11 is obsolete.
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export var DataViewIndexOutOfBoundsError = (function () {
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try {
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// IE11: The spec says it should throw RangeError,
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// IE11: but in IE11 it throws TypeError.
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EMPTY_VIEW.getInt8(0);
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}
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catch (e) {
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return e.constructor;
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}
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throw new Error("never reached");
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})();
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var MORE_DATA = new DataViewIndexOutOfBoundsError("Insufficient data");
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var sharedCachedKeyDecoder = new CachedKeyDecoder();
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var Decoder = /** @class */ (function () {
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function Decoder(extensionCodec, context, maxStrLength, maxBinLength, maxArrayLength, maxMapLength, maxExtLength, keyDecoder) {
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if (extensionCodec === void 0) { extensionCodec = ExtensionCodec.defaultCodec; }
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if (context === void 0) { context = undefined; }
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if (maxStrLength === void 0) { maxStrLength = UINT32_MAX; }
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if (maxBinLength === void 0) { maxBinLength = UINT32_MAX; }
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if (maxArrayLength === void 0) { maxArrayLength = UINT32_MAX; }
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if (maxMapLength === void 0) { maxMapLength = UINT32_MAX; }
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if (maxExtLength === void 0) { maxExtLength = UINT32_MAX; }
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if (keyDecoder === void 0) { keyDecoder = sharedCachedKeyDecoder; }
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this.extensionCodec = extensionCodec;
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this.context = context;
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this.maxStrLength = maxStrLength;
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this.maxBinLength = maxBinLength;
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this.maxArrayLength = maxArrayLength;
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this.maxMapLength = maxMapLength;
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this.maxExtLength = maxExtLength;
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this.keyDecoder = keyDecoder;
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this.totalPos = 0;
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this.pos = 0;
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this.view = EMPTY_VIEW;
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this.bytes = EMPTY_BYTES;
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this.headByte = HEAD_BYTE_REQUIRED;
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this.stack = [];
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}
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Decoder.prototype.reinitializeState = function () {
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this.totalPos = 0;
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this.headByte = HEAD_BYTE_REQUIRED;
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this.stack.length = 0;
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// view, bytes, and pos will be re-initialized in setBuffer()
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};
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Decoder.prototype.setBuffer = function (buffer) {
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this.bytes = ensureUint8Array(buffer);
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this.view = createDataView(this.bytes);
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this.pos = 0;
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};
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Decoder.prototype.appendBuffer = function (buffer) {
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if (this.headByte === HEAD_BYTE_REQUIRED && !this.hasRemaining(1)) {
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this.setBuffer(buffer);
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}
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else {
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var remainingData = this.bytes.subarray(this.pos);
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var newData = ensureUint8Array(buffer);
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// concat remainingData + newData
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var newBuffer = new Uint8Array(remainingData.length + newData.length);
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newBuffer.set(remainingData);
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newBuffer.set(newData, remainingData.length);
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this.setBuffer(newBuffer);
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}
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};
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Decoder.prototype.hasRemaining = function (size) {
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return this.view.byteLength - this.pos >= size;
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};
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Decoder.prototype.createExtraByteError = function (posToShow) {
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var _a = this, view = _a.view, pos = _a.pos;
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return new RangeError("Extra ".concat(view.byteLength - pos, " of ").concat(view.byteLength, " byte(s) found at buffer[").concat(posToShow, "]"));
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};
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/**
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* @throws {@link DecodeError}
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* @throws {@link RangeError}
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*/
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Decoder.prototype.decode = function (buffer) {
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this.reinitializeState();
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this.setBuffer(buffer);
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var object = this.doDecodeSync();
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if (this.hasRemaining(1)) {
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throw this.createExtraByteError(this.pos);
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}
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return object;
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};
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Decoder.prototype.decodeMulti = function (buffer) {
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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this.reinitializeState();
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this.setBuffer(buffer);
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_a.label = 1;
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case 1:
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if (!this.hasRemaining(1)) return [3 /*break*/, 3];
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return [4 /*yield*/, this.doDecodeSync()];
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case 2:
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_a.sent();
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return [3 /*break*/, 1];
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case 3: return [2 /*return*/];
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}
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});
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};
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Decoder.prototype.decodeAsync = function (stream) {
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var stream_1, stream_1_1;
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var e_1, _a;
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return __awaiter(this, void 0, void 0, function () {
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var decoded, object, buffer, e_1_1, _b, headByte, pos, totalPos;
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return __generator(this, function (_c) {
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switch (_c.label) {
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case 0:
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decoded = false;
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_c.label = 1;
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case 1:
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_c.trys.push([1, 6, 7, 12]);
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stream_1 = __asyncValues(stream);
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_c.label = 2;
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case 2: return [4 /*yield*/, stream_1.next()];
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case 3:
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if (!(stream_1_1 = _c.sent(), !stream_1_1.done)) return [3 /*break*/, 5];
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buffer = stream_1_1.value;
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if (decoded) {
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throw this.createExtraByteError(this.totalPos);
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}
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this.appendBuffer(buffer);
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try {
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object = this.doDecodeSync();
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decoded = true;
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}
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catch (e) {
|
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if (!(e instanceof DataViewIndexOutOfBoundsError)) {
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throw e; // rethrow
|
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}
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// fallthrough
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}
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this.totalPos += this.pos;
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_c.label = 4;
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case 4: return [3 /*break*/, 2];
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case 5: return [3 /*break*/, 12];
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case 6:
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e_1_1 = _c.sent();
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e_1 = { error: e_1_1 };
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return [3 /*break*/, 12];
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case 7:
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_c.trys.push([7, , 10, 11]);
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if (!(stream_1_1 && !stream_1_1.done && (_a = stream_1.return))) return [3 /*break*/, 9];
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return [4 /*yield*/, _a.call(stream_1)];
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case 8:
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_c.sent();
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_c.label = 9;
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case 9: return [3 /*break*/, 11];
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case 10:
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if (e_1) throw e_1.error;
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return [7 /*endfinally*/];
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case 11: return [7 /*endfinally*/];
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case 12:
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if (decoded) {
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if (this.hasRemaining(1)) {
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throw this.createExtraByteError(this.totalPos);
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}
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return [2 /*return*/, object];
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}
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_b = this, headByte = _b.headByte, pos = _b.pos, totalPos = _b.totalPos;
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throw new RangeError("Insufficient data in parsing ".concat(prettyByte(headByte), " at ").concat(totalPos, " (").concat(pos, " in the current buffer)"));
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||
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}
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||
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});
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});
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};
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Decoder.prototype.decodeArrayStream = function (stream) {
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return this.decodeMultiAsync(stream, true);
|
||
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};
|
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Decoder.prototype.decodeStream = function (stream) {
|
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return this.decodeMultiAsync(stream, false);
|
||
|
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};
|
||
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Decoder.prototype.decodeMultiAsync = function (stream, isArray) {
|
||
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return __asyncGenerator(this, arguments, function decodeMultiAsync_1() {
|
||
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var isArrayHeaderRequired, arrayItemsLeft, stream_2, stream_2_1, buffer, e_2, e_3_1;
|
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var e_3, _a;
|
||
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return __generator(this, function (_b) {
|
||
|
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switch (_b.label) {
|
||
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case 0:
|
||
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isArrayHeaderRequired = isArray;
|
||
|
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arrayItemsLeft = -1;
|
||
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_b.label = 1;
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||
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case 1:
|
||
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_b.trys.push([1, 13, 14, 19]);
|
||
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stream_2 = __asyncValues(stream);
|
||
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_b.label = 2;
|
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case 2: return [4 /*yield*/, __await(stream_2.next())];
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case 3:
|
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if (!(stream_2_1 = _b.sent(), !stream_2_1.done)) return [3 /*break*/, 12];
|
||
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buffer = stream_2_1.value;
|
||
|
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if (isArray && arrayItemsLeft === 0) {
|
||
|
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throw this.createExtraByteError(this.totalPos);
|
||
|
|
}
|
||
|
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this.appendBuffer(buffer);
|
||
|
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if (isArrayHeaderRequired) {
|
||
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arrayItemsLeft = this.readArraySize();
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||
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isArrayHeaderRequired = false;
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||
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this.complete();
|
||
|
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}
|
||
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_b.label = 4;
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||
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case 4:
|
||
|
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_b.trys.push([4, 9, , 10]);
|
||
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_b.label = 5;
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||
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case 5:
|
||
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if (!true) return [3 /*break*/, 8];
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||
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return [4 /*yield*/, __await(this.doDecodeSync())];
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||
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case 6: return [4 /*yield*/, _b.sent()];
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||
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case 7:
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_b.sent();
|
||
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if (--arrayItemsLeft === 0) {
|
||
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return [3 /*break*/, 8];
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||
|
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}
|
||
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return [3 /*break*/, 5];
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||
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case 8: return [3 /*break*/, 10];
|
||
|
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case 9:
|
||
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e_2 = _b.sent();
|
||
|
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if (!(e_2 instanceof DataViewIndexOutOfBoundsError)) {
|
||
|
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throw e_2; // rethrow
|
||
|
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}
|
||
|
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return [3 /*break*/, 10];
|
||
|
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case 10:
|
||
|
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this.totalPos += this.pos;
|
||
|
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_b.label = 11;
|
||
|
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case 11: return [3 /*break*/, 2];
|
||
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case 12: return [3 /*break*/, 19];
|
||
|
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case 13:
|
||
|
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e_3_1 = _b.sent();
|
||
|
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e_3 = { error: e_3_1 };
|
||
|
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return [3 /*break*/, 19];
|
||
|
|
case 14:
|
||
|
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_b.trys.push([14, , 17, 18]);
|
||
|
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if (!(stream_2_1 && !stream_2_1.done && (_a = stream_2.return))) return [3 /*break*/, 16];
|
||
|
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return [4 /*yield*/, __await(_a.call(stream_2))];
|
||
|
|
case 15:
|
||
|
|
_b.sent();
|
||
|
|
_b.label = 16;
|
||
|
|
case 16: return [3 /*break*/, 18];
|
||
|
|
case 17:
|
||
|
|
if (e_3) throw e_3.error;
|
||
|
|
return [7 /*endfinally*/];
|
||
|
|
case 18: return [7 /*endfinally*/];
|
||
|
|
case 19: return [2 /*return*/];
|
||
|
|
}
|
||
|
|
});
|
||
|
|
});
|
||
|
|
};
|
||
|
|
Decoder.prototype.doDecodeSync = function () {
|
||
|
|
DECODE: while (true) {
|
||
|
|
var headByte = this.readHeadByte();
|
||
|
|
var object = void 0;
|
||
|
|
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
|
||
|
|
var size = headByte - 0x80;
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushMapState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (headByte < 0xa0) {
|
||
|
|
// fixarray (1001 xxxx) 0x90 - 0x9f
|
||
|
|
var size = headByte - 0x90;
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushArrayState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = [];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// fixstr (101x xxxx) 0xa0 - 0xbf
|
||
|
|
var byteLength = headByte - 0xa0;
|
||
|
|
object = this.decodeUtf8String(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
|
||
|
|
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
|
||
|
|
object = this.readI64();
|
||
|
|
}
|
||
|
|
else if (headByte === 0xd9) {
|
||
|
|
// str 8
|
||
|
|
var byteLength = this.lookU8();
|
||
|
|
object = this.decodeUtf8String(byteLength, 1);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xda) {
|
||
|
|
// str 16
|
||
|
|
var byteLength = this.lookU16();
|
||
|
|
object = this.decodeUtf8String(byteLength, 2);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xdb) {
|
||
|
|
// str 32
|
||
|
|
var byteLength = this.lookU32();
|
||
|
|
object = this.decodeUtf8String(byteLength, 4);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xdc) {
|
||
|
|
// array 16
|
||
|
|
var size = this.readU16();
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushArrayState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = [];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (headByte === 0xdd) {
|
||
|
|
// array 32
|
||
|
|
var size = this.readU32();
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushArrayState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = [];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (headByte === 0xde) {
|
||
|
|
// map 16
|
||
|
|
var size = this.readU16();
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushMapState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (headByte === 0xdf) {
|
||
|
|
// map 32
|
||
|
|
var size = this.readU32();
|
||
|
|
if (size !== 0) {
|
||
|
|
this.pushMapState(size);
|
||
|
|
this.complete();
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (headByte === 0xc4) {
|
||
|
|
// bin 8
|
||
|
|
var size = this.lookU8();
|
||
|
|
object = this.decodeBinary(size, 1);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xc5) {
|
||
|
|
// bin 16
|
||
|
|
var size = this.lookU16();
|
||
|
|
object = this.decodeBinary(size, 2);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xc6) {
|
||
|
|
// bin 32
|
||
|
|
var 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
|
||
|
|
var size = this.lookU8();
|
||
|
|
object = this.decodeExtension(size, 1);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xc8) {
|
||
|
|
// ext 16
|
||
|
|
var size = this.lookU16();
|
||
|
|
object = this.decodeExtension(size, 2);
|
||
|
|
}
|
||
|
|
else if (headByte === 0xc9) {
|
||
|
|
// ext 32
|
||
|
|
var size = this.lookU32();
|
||
|
|
object = this.decodeExtension(size, 4);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
throw new DecodeError("Unrecognized type byte: ".concat(prettyByte(headByte)));
|
||
|
|
}
|
||
|
|
this.complete();
|
||
|
|
var stack = this.stack;
|
||
|
|
while (stack.length > 0) {
|
||
|
|
// arrays and maps
|
||
|
|
var state = stack[stack.length - 1];
|
||
|
|
if (state.type === 0 /* State.ARRAY */) {
|
||
|
|
state.array[state.position] = object;
|
||
|
|
state.position++;
|
||
|
|
if (state.position === state.size) {
|
||
|
|
stack.pop();
|
||
|
|
object = state.array;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (state.type === 1 /* State.MAP_KEY */) {
|
||
|
|
if (!isValidMapKeyType(object)) {
|
||
|
|
throw new DecodeError("The type of key must be string or number but " + typeof object);
|
||
|
|
}
|
||
|
|
if (object === "__proto__") {
|
||
|
|
throw new DecodeError("The key __proto__ is not allowed");
|
||
|
|
}
|
||
|
|
state.key = object;
|
||
|
|
state.type = 2 /* 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) {
|
||
|
|
stack.pop();
|
||
|
|
object = state.map;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
state.key = null;
|
||
|
|
state.type = 1 /* State.MAP_KEY */;
|
||
|
|
continue DECODE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return object;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
Decoder.prototype.readHeadByte = function () {
|
||
|
|
if (this.headByte === HEAD_BYTE_REQUIRED) {
|
||
|
|
this.headByte = this.readU8();
|
||
|
|
// console.log("headByte", prettyByte(this.headByte));
|
||
|
|
}
|
||
|
|
return this.headByte;
|
||
|
|
};
|
||
|
|
Decoder.prototype.complete = function () {
|
||
|
|
this.headByte = HEAD_BYTE_REQUIRED;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readArraySize = function () {
|
||
|
|
var 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: ".concat(prettyByte(headByte)));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
Decoder.prototype.pushMapState = function (size) {
|
||
|
|
if (size > this.maxMapLength) {
|
||
|
|
throw new DecodeError("Max length exceeded: map length (".concat(size, ") > maxMapLengthLength (").concat(this.maxMapLength, ")"));
|
||
|
|
}
|
||
|
|
this.stack.push({
|
||
|
|
type: 1 /* State.MAP_KEY */,
|
||
|
|
size: size,
|
||
|
|
key: null,
|
||
|
|
readCount: 0,
|
||
|
|
map: {},
|
||
|
|
});
|
||
|
|
};
|
||
|
|
Decoder.prototype.pushArrayState = function (size) {
|
||
|
|
if (size > this.maxArrayLength) {
|
||
|
|
throw new DecodeError("Max length exceeded: array length (".concat(size, ") > maxArrayLength (").concat(this.maxArrayLength, ")"));
|
||
|
|
}
|
||
|
|
this.stack.push({
|
||
|
|
type: 0 /* State.ARRAY */,
|
||
|
|
size: size,
|
||
|
|
array: new Array(size),
|
||
|
|
position: 0,
|
||
|
|
});
|
||
|
|
};
|
||
|
|
Decoder.prototype.decodeUtf8String = function (byteLength, headerOffset) {
|
||
|
|
var _a;
|
||
|
|
if (byteLength > this.maxStrLength) {
|
||
|
|
throw new DecodeError("Max length exceeded: UTF-8 byte length (".concat(byteLength, ") > maxStrLength (").concat(this.maxStrLength, ")"));
|
||
|
|
}
|
||
|
|
if (this.bytes.byteLength < this.pos + headerOffset + byteLength) {
|
||
|
|
throw MORE_DATA;
|
||
|
|
}
|
||
|
|
var offset = this.pos + headerOffset;
|
||
|
|
var object;
|
||
|
|
if (this.stateIsMapKey() && ((_a = this.keyDecoder) === null || _a === void 0 ? void 0 : _a.canBeCached(byteLength))) {
|
||
|
|
object = this.keyDecoder.decode(this.bytes, offset, byteLength);
|
||
|
|
}
|
||
|
|
else if (byteLength > TEXT_DECODER_THRESHOLD) {
|
||
|
|
object = utf8DecodeTD(this.bytes, offset, byteLength);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
object = utf8DecodeJs(this.bytes, offset, byteLength);
|
||
|
|
}
|
||
|
|
this.pos += headerOffset + byteLength;
|
||
|
|
return object;
|
||
|
|
};
|
||
|
|
Decoder.prototype.stateIsMapKey = function () {
|
||
|
|
if (this.stack.length > 0) {
|
||
|
|
var state = this.stack[this.stack.length - 1];
|
||
|
|
return state.type === 1 /* State.MAP_KEY */;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
};
|
||
|
|
Decoder.prototype.decodeBinary = function (byteLength, headOffset) {
|
||
|
|
if (byteLength > this.maxBinLength) {
|
||
|
|
throw new DecodeError("Max length exceeded: bin length (".concat(byteLength, ") > maxBinLength (").concat(this.maxBinLength, ")"));
|
||
|
|
}
|
||
|
|
if (!this.hasRemaining(byteLength + headOffset)) {
|
||
|
|
throw MORE_DATA;
|
||
|
|
}
|
||
|
|
var offset = this.pos + headOffset;
|
||
|
|
var object = this.bytes.subarray(offset, offset + byteLength);
|
||
|
|
this.pos += headOffset + byteLength;
|
||
|
|
return object;
|
||
|
|
};
|
||
|
|
Decoder.prototype.decodeExtension = function (size, headOffset) {
|
||
|
|
if (size > this.maxExtLength) {
|
||
|
|
throw new DecodeError("Max length exceeded: ext length (".concat(size, ") > maxExtLength (").concat(this.maxExtLength, ")"));
|
||
|
|
}
|
||
|
|
var extType = this.view.getInt8(this.pos + headOffset);
|
||
|
|
var data = this.decodeBinary(size, headOffset + 1 /* extType */);
|
||
|
|
return this.extensionCodec.decode(data, extType, this.context);
|
||
|
|
};
|
||
|
|
Decoder.prototype.lookU8 = function () {
|
||
|
|
return this.view.getUint8(this.pos);
|
||
|
|
};
|
||
|
|
Decoder.prototype.lookU16 = function () {
|
||
|
|
return this.view.getUint16(this.pos);
|
||
|
|
};
|
||
|
|
Decoder.prototype.lookU32 = function () {
|
||
|
|
return this.view.getUint32(this.pos);
|
||
|
|
};
|
||
|
|
Decoder.prototype.readU8 = function () {
|
||
|
|
var value = this.view.getUint8(this.pos);
|
||
|
|
this.pos++;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readI8 = function () {
|
||
|
|
var value = this.view.getInt8(this.pos);
|
||
|
|
this.pos++;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readU16 = function () {
|
||
|
|
var value = this.view.getUint16(this.pos);
|
||
|
|
this.pos += 2;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readI16 = function () {
|
||
|
|
var value = this.view.getInt16(this.pos);
|
||
|
|
this.pos += 2;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readU32 = function () {
|
||
|
|
var value = this.view.getUint32(this.pos);
|
||
|
|
this.pos += 4;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readI32 = function () {
|
||
|
|
var value = this.view.getInt32(this.pos);
|
||
|
|
this.pos += 4;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readU64 = function () {
|
||
|
|
var value = getUint64(this.view, this.pos);
|
||
|
|
this.pos += 8;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readI64 = function () {
|
||
|
|
var value = getInt64(this.view, this.pos);
|
||
|
|
this.pos += 8;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readF32 = function () {
|
||
|
|
var value = this.view.getFloat32(this.pos);
|
||
|
|
this.pos += 4;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
Decoder.prototype.readF64 = function () {
|
||
|
|
var value = this.view.getFloat64(this.pos);
|
||
|
|
this.pos += 8;
|
||
|
|
return value;
|
||
|
|
};
|
||
|
|
return Decoder;
|
||
|
|
}());
|
||
|
|
export { Decoder };
|
||
|
|
//# sourceMappingURL=Decoder.mjs.map
|