mjs • Lines: 734var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
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;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
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);
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); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
var __await = (this && this.__await) || function (v) { return this instanceof __await ? (this.v = v, this) : new __await(v); }
var __asyncGenerator = (this && this.__asyncGenerator) || function (thisArg, _arguments, generator) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var g = generator.apply(thisArg, _arguments || []), i, q = [];
return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
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); }); }; }
function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
function fulfill(value) { resume("next", value); }
function reject(value) { resume("throw", value); }
function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
};
import { prettyByte } from "./utils/prettyByte.mjs";
import { ExtensionCodec } from "./ExtensionCodec.mjs";
import { getInt64, getUint64, UINT32_MAX } from "./utils/int.mjs";
import { utf8DecodeJs, TEXT_DECODER_THRESHOLD, utf8DecodeTD } from "./utils/utf8.mjs";
import { createDataView, ensureUint8Array } from "./utils/typedArrays.mjs";
import { CachedKeyDecoder } from "./CachedKeyDecoder.mjs";
import { DecodeError } from "./DecodeError.mjs";
var isValidMapKeyType = function (key) {
var keyType = typeof key;
return keyType === "string" || keyType === "number";
};
var HEAD_BYTE_REQUIRED = -1;
var EMPTY_VIEW = new DataView(new ArrayBuffer(0));
var EMPTY_BYTES = new Uint8Array(EMPTY_VIEW.buffer);
// IE11: Hack to support IE11.
// IE11: Drop this hack and just use RangeError when IE11 is obsolete.
export var DataViewIndexOutOfBoundsError = (function () {
try {
// IE11: The spec says it should throw RangeError,
// IE11: but in IE11 it throws TypeError.
EMPTY_VIEW.getInt8(0);
}
catch (e) {
return e.constructor;
}
throw new Error("never reached");
})();
var MORE_DATA = new DataViewIndexOutOfBoundsError("Insufficient data");
var sharedCachedKeyDecoder = new CachedKeyDecoder();
var Decoder = /** @class */ (function () {
function Decoder(extensionCodec, context, maxStrLength, maxBinLength, maxArrayLength, maxMapLength, maxExtLength, keyDecoder) {
if (extensionCodec === void 0) { extensionCodec = ExtensionCodec.defaultCodec; }
if (context === void 0) { context = undefined; }
if (maxStrLength === void 0) { maxStrLength = UINT32_MAX; }
if (maxBinLength === void 0) { maxBinLength = UINT32_MAX; }
if (maxArrayLength === void 0) { maxArrayLength = UINT32_MAX; }
if (maxMapLength === void 0) { maxMapLength = UINT32_MAX; }
if (maxExtLength === void 0) { maxExtLength = UINT32_MAX; }
if (keyDecoder === void 0) { keyDecoder = sharedCachedKeyDecoder; }
this.extensionCodec = extensionCodec;
this.context = context;
this.maxStrLength = maxStrLength;
this.maxBinLength = maxBinLength;
this.maxArrayLength = maxArrayLength;
this.maxMapLength = maxMapLength;
this.maxExtLength = maxExtLength;
this.keyDecoder = keyDecoder;
this.totalPos = 0;
this.pos = 0;
this.view = EMPTY_VIEW;
this.bytes = EMPTY_BYTES;
this.headByte = HEAD_BYTE_REQUIRED;
this.stack = [];
}
Decoder.prototype.reinitializeState = function () {
this.totalPos = 0;
this.headByte = HEAD_BYTE_REQUIRED;
this.stack.length = 0;
// view, bytes, and pos will be re-initialized in setBuffer()
};
Decoder.prototype.setBuffer = function (buffer) {
this.bytes = ensureUint8Array(buffer);
this.view = createDataView(this.bytes);
this.pos = 0;
};
Decoder.prototype.appendBuffer = function (buffer) {
if (this.headByte === HEAD_BYTE_REQUIRED && !this.hasRemaining(1)) {
this.setBuffer(buffer);
}
else {
var remainingData = this.bytes.subarray(this.pos);
var newData = ensureUint8Array(buffer);
// concat remainingData + newData
var newBuffer = new Uint8Array(remainingData.length + newData.length);
newBuffer.set(remainingData);
newBuffer.set(newData, remainingData.length);
this.setBuffer(newBuffer);
}
};
Decoder.prototype.hasRemaining = function (size) {
return this.view.byteLength - this.pos >= size;
};
Decoder.prototype.createExtraByteError = function (posToShow) {
var _a = this, view = _a.view, pos = _a.pos;
return new RangeError("Extra ".concat(view.byteLength - pos, " of ").concat(view.byteLength, " byte(s) found at buffer[").concat(posToShow, "]"));
};
/**
* @throws {@link DecodeError}
* @throws {@link RangeError}
*/
Decoder.prototype.decode = function (buffer) {
this.reinitializeState();
this.setBuffer(buffer);
var object = this.doDecodeSync();
if (this.hasRemaining(1)) {
throw this.createExtraByteError(this.pos);
}
return object;
};
Decoder.prototype.decodeMulti = function (buffer) {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.reinitializeState();
this.setBuffer(buffer);
_a.label = 1;
case 1:
if (!this.hasRemaining(1)) return [3 /*break*/, 3];
return [4 /*yield*/, this.doDecodeSync()];
case 2:
_a.sent();
return [3 /*break*/, 1];
case 3: return [2 /*return*/];
}
});
};
Decoder.prototype.decodeAsync = function (stream) {
var stream_1, stream_1_1;
var e_1, _a;
return __awaiter(this, void 0, void 0, function () {
var decoded, object, buffer, e_1_1, _b, headByte, pos, totalPos;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
decoded = false;
_c.label = 1;
case 1:
_c.trys.push([1, 6, 7, 12]);
stream_1 = __asyncValues(stream);
_c.label = 2;
case 2: return [4 /*yield*/, stream_1.next()];
case 3:
if (!(stream_1_1 = _c.sent(), !stream_1_1.done)) return [3 /*break*/, 5];
buffer = stream_1_1.value;
if (decoded) {
throw this.createExtraByteError(this.totalPos);
}
this.appendBuffer(buffer);
try {
object = this.doDecodeSync();
decoded = true;
}
catch (e) {
if (!(e instanceof DataViewIndexOutOfBoundsError)) {
throw e; // rethrow
}
// fallthrough
}
this.totalPos += this.pos;
_c.label = 4;
case 4: return [3 /*break*/, 2];
case 5: return [3 /*break*/, 12];
case 6:
e_1_1 = _c.sent();
e_1 = { error: e_1_1 };
return [3 /*break*/, 12];
case 7:
_c.trys.push([7, , 10, 11]);
if (!(stream_1_1 && !stream_1_1.done && (_a = stream_1.return))) return [3 /*break*/, 9];
return [4 /*yield*/, _a.call(stream_1)];
case 8:
_c.sent();
_c.label = 9;
case 9: return [3 /*break*/, 11];
case 10:
if (e_1) throw e_1.error;
return [7 /*endfinally*/];
case 11: return [7 /*endfinally*/];
case 12:
if (decoded) {
if (this.hasRemaining(1)) {
throw this.createExtraByteError(this.totalPos);
}
return [2 /*return*/, object];
}
_b = this, headByte = _b.headByte, pos = _b.pos, totalPos = _b.totalPos;
throw new RangeError("Insufficient data in parsing ".concat(prettyByte(headByte), " at ").concat(totalPos, " (").concat(pos, " in the current buffer)"));
}
});
});
};
Decoder.prototype.decodeArrayStream = function (stream) {
return this.decodeMultiAsync(stream, true);
};
Decoder.prototype.decodeStream = function (stream) {
return this.decodeMultiAsync(stream, false);
};
Decoder.prototype.decodeMultiAsync = function (stream, isArray) {
return __asyncGenerator(this, arguments, function decodeMultiAsync_1() {
var isArrayHeaderRequired, arrayItemsLeft, stream_2, stream_2_1, buffer, e_2, e_3_1;
var e_3, _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
isArrayHeaderRequired = isArray;
arrayItemsLeft = -1;
_b.label = 1;
case 1:
_b.trys.push([1, 13, 14, 19]);
stream_2 = __asyncValues(stream);
_b.label = 2;
case 2: return [4 /*yield*/, __await(stream_2.next())];
case 3:
if (!(stream_2_1 = _b.sent(), !stream_2_1.done)) return [3 /*break*/, 12];
buffer = stream_2_1.value;
if (isArray && arrayItemsLeft === 0) {
throw this.createExtraByteError(this.totalPos);
}
this.appendBuffer(buffer);
if (isArrayHeaderRequired) {
arrayItemsLeft = this.readArraySize();
isArrayHeaderRequired = false;
this.complete();
}
_b.label = 4;
case 4:
_b.trys.push([4, 9, , 10]);
_b.label = 5;
case 5:
if (!true) return [3 /*break*/, 8];
return [4 /*yield*/, __await(this.doDecodeSync())];
case 6: return [4 /*yield*/, _b.sent()];
case 7:
_b.sent();
if (--arrayItemsLeft === 0) {
return [3 /*break*/, 8];
}
return [3 /*break*/, 5];
case 8: return [3 /*break*/, 10];
case 9:
e_2 = _b.sent();
if (!(e_2 instanceof DataViewIndexOutOfBoundsError)) {
throw e_2; // rethrow
}
return [3 /*break*/, 10];
case 10:
this.totalPos += this.pos;
_b.label = 11;
case 11: return [3 /*break*/, 2];
case 12: return [3 /*break*/, 19];
case 13:
e_3_1 = _b.sent();
e_3 = { error: e_3_1 };
return [3 /*break*/, 19];
case 14:
_b.trys.push([14, , 17, 18]);
if (!(stream_2_1 && !stream_2_1.done && (_a = stream_2.return))) return [3 /*break*/, 16];
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