mirror of https://github.com/webpack/webpack.git
899 lines
24 KiB
JavaScript
899 lines
24 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const memoize = require("../util/memoize");
|
|
const SerializerMiddleware = require("./SerializerMiddleware");
|
|
|
|
/** @typedef {import("./types").BufferSerializableType} BufferSerializableType */
|
|
/** @typedef {import("./types").PrimitiveSerializableType} PrimitiveSerializableType */
|
|
|
|
/* eslint-disable no-loop-func */
|
|
|
|
/*
|
|
Format:
|
|
|
|
File -> Section*
|
|
|
|
Section -> NullsSection |
|
|
BooleansSection |
|
|
F64NumbersSection |
|
|
I32NumbersSection |
|
|
I8NumbersSection |
|
|
ShortStringSection |
|
|
StringSection |
|
|
BufferSection |
|
|
NopSection
|
|
|
|
|
|
|
|
NullsSection ->
|
|
NullHeaderByte | Null2HeaderByte | Null3HeaderByte |
|
|
Nulls8HeaderByte 0xnn (n:count - 4) |
|
|
Nulls32HeaderByte n:ui32 (n:count - 260) |
|
|
BooleansSection -> TrueHeaderByte | FalseHeaderByte | BooleansSectionHeaderByte BooleansCountAndBitsByte
|
|
F64NumbersSection -> F64NumbersSectionHeaderByte f64*
|
|
I32NumbersSection -> I32NumbersSectionHeaderByte i32*
|
|
I8NumbersSection -> I8NumbersSectionHeaderByte i8*
|
|
ShortStringSection -> ShortStringSectionHeaderByte ascii-byte*
|
|
StringSection -> StringSectionHeaderByte i32:length utf8-byte*
|
|
BufferSection -> BufferSectionHeaderByte i32:length byte*
|
|
NopSection --> NopSectionHeaderByte
|
|
|
|
ShortStringSectionHeaderByte -> 0b1nnn_nnnn (n:length)
|
|
|
|
F64NumbersSectionHeaderByte -> 0b001n_nnnn (n:count - 1)
|
|
I32NumbersSectionHeaderByte -> 0b010n_nnnn (n:count - 1)
|
|
I8NumbersSectionHeaderByte -> 0b011n_nnnn (n:count - 1)
|
|
|
|
NullsSectionHeaderByte -> 0b0001_nnnn (n:count - 1)
|
|
BooleansCountAndBitsByte ->
|
|
0b0000_1xxx (count = 3) |
|
|
0b0001_xxxx (count = 4) |
|
|
0b001x_xxxx (count = 5) |
|
|
0b01xx_xxxx (count = 6) |
|
|
0b1nnn_nnnn (n:count - 7, 7 <= count <= 133)
|
|
0xff n:ui32 (n:count, 134 <= count < 2^32)
|
|
|
|
StringSectionHeaderByte -> 0b0000_1110
|
|
BufferSectionHeaderByte -> 0b0000_1111
|
|
NopSectionHeaderByte -> 0b0000_1011
|
|
FalseHeaderByte -> 0b0000_1100
|
|
TrueHeaderByte -> 0b0000_1101
|
|
|
|
RawNumber -> n (n <= 10)
|
|
|
|
*/
|
|
|
|
const LAZY_HEADER = 0x0b;
|
|
const TRUE_HEADER = 0x0c;
|
|
const FALSE_HEADER = 0x0d;
|
|
const BOOLEANS_HEADER = 0x0e;
|
|
const NULL_HEADER = 0x10;
|
|
const NULL2_HEADER = 0x11;
|
|
const NULL3_HEADER = 0x12;
|
|
const NULLS8_HEADER = 0x13;
|
|
const NULLS32_HEADER = 0x14;
|
|
const NULL_AND_I8_HEADER = 0x15;
|
|
const NULL_AND_I32_HEADER = 0x16;
|
|
const NULL_AND_TRUE_HEADER = 0x17;
|
|
const NULL_AND_FALSE_HEADER = 0x18;
|
|
const STRING_HEADER = 0x1e;
|
|
const BUFFER_HEADER = 0x1f;
|
|
const I8_HEADER = 0x60;
|
|
const I32_HEADER = 0x40;
|
|
const F64_HEADER = 0x20;
|
|
const SHORT_STRING_HEADER = 0x80;
|
|
|
|
/** Uplift high-order bits */
|
|
const NUMBERS_HEADER_MASK = 0xe0;
|
|
const NUMBERS_COUNT_MASK = 0x1f; // 0b0001_1111
|
|
const SHORT_STRING_LENGTH_MASK = 0x7f; // 0b0111_1111
|
|
|
|
const HEADER_SIZE = 1;
|
|
const I8_SIZE = 1;
|
|
const I32_SIZE = 4;
|
|
const F64_SIZE = 8;
|
|
|
|
const MEASURE_START_OPERATION = Symbol("MEASURE_START_OPERATION");
|
|
const MEASURE_END_OPERATION = Symbol("MEASURE_END_OPERATION");
|
|
|
|
const identifyNumber = n => {
|
|
if (n === (n | 0)) {
|
|
if (n <= 127 && n >= -128) return 0;
|
|
if (n <= 2147483647 && n >= -2147483648) return 1;
|
|
}
|
|
return 2;
|
|
};
|
|
|
|
/**
|
|
* @typedef {PrimitiveSerializableType[]} DeserializedType
|
|
* @typedef {BufferSerializableType[]} SerializedType
|
|
* @extends {SerializerMiddleware<DeserializedType, SerializedType>}
|
|
*/
|
|
class BinaryMiddleware extends SerializerMiddleware {
|
|
/**
|
|
* @param {DeserializedType} data data
|
|
* @param {Object} context context object
|
|
* @returns {SerializedType|Promise<SerializedType>} serialized data
|
|
*/
|
|
serialize(data, context) {
|
|
return this._serialize(data, context);
|
|
}
|
|
|
|
_serializeLazy(fn, context) {
|
|
return SerializerMiddleware.serializeLazy(fn, data =>
|
|
this._serialize(data, context)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param {DeserializedType} data data
|
|
* @param {Object} context context object
|
|
* @returns {SerializedType} serialized data
|
|
*/
|
|
_serialize(data, context) {
|
|
/** @type {Buffer} */
|
|
let currentBuffer = null;
|
|
/** @type {Buffer} */
|
|
let leftOverBuffer = null;
|
|
let currentPosition = 0;
|
|
/** @type {BufferSerializableType[]} */
|
|
let buffers = [];
|
|
let buffersTotalLength = 0;
|
|
const allocate = bytesNeeded => {
|
|
if (currentBuffer !== null) {
|
|
if (currentBuffer.length - currentPosition >= bytesNeeded) return;
|
|
flush();
|
|
}
|
|
if (leftOverBuffer && leftOverBuffer.length >= bytesNeeded) {
|
|
currentBuffer = leftOverBuffer;
|
|
leftOverBuffer = null;
|
|
} else {
|
|
currentBuffer = Buffer.allocUnsafe(
|
|
Math.max(
|
|
bytesNeeded,
|
|
Math.min(Math.max(buffersTotalLength, 1024), 16384)
|
|
)
|
|
);
|
|
}
|
|
};
|
|
const flush = () => {
|
|
if (currentBuffer !== null) {
|
|
buffers.push(currentBuffer.slice(0, currentPosition));
|
|
if (
|
|
!leftOverBuffer ||
|
|
leftOverBuffer.length < currentBuffer.length - currentPosition
|
|
)
|
|
leftOverBuffer = currentBuffer.slice(currentPosition);
|
|
currentBuffer = null;
|
|
buffersTotalLength += currentPosition;
|
|
currentPosition = 0;
|
|
}
|
|
};
|
|
const writeU8 = byte => {
|
|
currentBuffer.writeUInt8(byte, currentPosition++);
|
|
};
|
|
const writeU32 = ui32 => {
|
|
currentBuffer.writeUInt32LE(ui32, currentPosition);
|
|
currentPosition += 4;
|
|
};
|
|
const measureStack = [];
|
|
const measureStart = () => {
|
|
measureStack.push(buffers.length, currentPosition);
|
|
};
|
|
const measureEnd = () => {
|
|
const oldPos = measureStack.pop();
|
|
const buffersIndex = measureStack.pop();
|
|
let size = currentPosition - oldPos;
|
|
for (let i = buffersIndex; i < buffers.length; i++) {
|
|
size += buffers[i].length;
|
|
}
|
|
return size;
|
|
};
|
|
const serializeData = data => {
|
|
for (let i = 0; i < data.length; i++) {
|
|
const thing = data[i];
|
|
switch (typeof thing) {
|
|
case "function": {
|
|
if (!SerializerMiddleware.isLazy(thing))
|
|
throw new Error("Unexpected function " + thing);
|
|
/** @type {SerializedType | (() => SerializedType)} */
|
|
let serializedData = SerializerMiddleware.getLazySerializedValue(
|
|
thing
|
|
);
|
|
if (serializedData === undefined) {
|
|
if (SerializerMiddleware.isLazy(thing, this)) {
|
|
const data = this._serialize(thing(), context);
|
|
SerializerMiddleware.setLazySerializedValue(thing, data);
|
|
serializedData = data;
|
|
} else {
|
|
serializedData = this._serializeLazy(thing, context);
|
|
}
|
|
}
|
|
if (typeof serializedData === "function") {
|
|
flush();
|
|
buffers.push(serializedData);
|
|
} else {
|
|
const lengths = [];
|
|
for (const item of serializedData) {
|
|
let last;
|
|
if (typeof item === "function") {
|
|
lengths.push(0);
|
|
} else if (item.length === 0) {
|
|
// ignore
|
|
} else if (
|
|
lengths.length > 0 &&
|
|
(last = lengths[lengths.length - 1]) !== 0
|
|
) {
|
|
const remaining = 0xffffffff - last;
|
|
if (remaining >= item.length) {
|
|
lengths[lengths.length - 1] += item.length;
|
|
} else {
|
|
lengths.push(item.length - remaining);
|
|
lengths[lengths.length - 2] = 0xffffffff;
|
|
}
|
|
} else {
|
|
lengths.push(item.length);
|
|
}
|
|
}
|
|
allocate(5 + lengths.length * 4);
|
|
writeU8(LAZY_HEADER);
|
|
writeU32(lengths.length);
|
|
for (const l of lengths) {
|
|
writeU32(l);
|
|
}
|
|
flush();
|
|
for (const item of serializedData) {
|
|
buffers.push(item);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case "string": {
|
|
const len = Buffer.byteLength(thing);
|
|
if (len >= 128 || len !== thing.length) {
|
|
allocate(len + HEADER_SIZE + I32_SIZE);
|
|
writeU8(STRING_HEADER);
|
|
writeU32(len);
|
|
currentBuffer.write(thing, currentPosition);
|
|
} else {
|
|
allocate(len + HEADER_SIZE);
|
|
writeU8(SHORT_STRING_HEADER | len);
|
|
currentBuffer.write(thing, currentPosition, "latin1");
|
|
}
|
|
currentPosition += len;
|
|
break;
|
|
}
|
|
case "number": {
|
|
const type = identifyNumber(thing);
|
|
if (type === 0 && thing >= 0 && thing <= 10) {
|
|
// shortcut for very small numbers
|
|
allocate(I8_SIZE);
|
|
writeU8(thing);
|
|
break;
|
|
}
|
|
/**
|
|
* amount of numbers to write
|
|
* @type {number}
|
|
*/
|
|
let n = 1;
|
|
for (; n < 32 && i + n < data.length; n++) {
|
|
const item = data[i + n];
|
|
if (typeof item !== "number") break;
|
|
if (identifyNumber(item) !== type) break;
|
|
}
|
|
switch (type) {
|
|
case 0:
|
|
allocate(HEADER_SIZE + I8_SIZE * n);
|
|
writeU8(I8_HEADER | (n - 1));
|
|
while (n > 0) {
|
|
currentBuffer.writeInt8(
|
|
/** @type {number} */ (data[i]),
|
|
currentPosition
|
|
);
|
|
currentPosition += I8_SIZE;
|
|
n--;
|
|
i++;
|
|
}
|
|
break;
|
|
case 1:
|
|
allocate(HEADER_SIZE + I32_SIZE * n);
|
|
writeU8(I32_HEADER | (n - 1));
|
|
while (n > 0) {
|
|
currentBuffer.writeInt32LE(
|
|
/** @type {number} */ (data[i]),
|
|
currentPosition
|
|
);
|
|
currentPosition += I32_SIZE;
|
|
n--;
|
|
i++;
|
|
}
|
|
break;
|
|
case 2:
|
|
allocate(HEADER_SIZE + F64_SIZE * n);
|
|
writeU8(F64_HEADER | (n - 1));
|
|
while (n > 0) {
|
|
currentBuffer.writeDoubleLE(
|
|
/** @type {number} */ (data[i]),
|
|
currentPosition
|
|
);
|
|
currentPosition += F64_SIZE;
|
|
n--;
|
|
i++;
|
|
}
|
|
break;
|
|
}
|
|
|
|
i--;
|
|
break;
|
|
}
|
|
case "boolean": {
|
|
let lastByte = thing === true ? 1 : 0;
|
|
const bytes = [];
|
|
let count = 1;
|
|
let n;
|
|
for (n = 1; n < 0xffffffff && i + n < data.length; n++) {
|
|
const item = data[i + n];
|
|
if (typeof item !== "boolean") break;
|
|
const pos = count & 0x7;
|
|
if (pos === 0) {
|
|
bytes.push(lastByte);
|
|
lastByte = item === true ? 1 : 0;
|
|
} else if (item === true) {
|
|
lastByte |= 1 << pos;
|
|
}
|
|
count++;
|
|
}
|
|
i += count - 1;
|
|
if (count === 1) {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(lastByte === 1 ? TRUE_HEADER : FALSE_HEADER);
|
|
} else if (count === 2) {
|
|
allocate(HEADER_SIZE * 2);
|
|
writeU8(lastByte & 1 ? TRUE_HEADER : FALSE_HEADER);
|
|
writeU8(lastByte & 2 ? TRUE_HEADER : FALSE_HEADER);
|
|
} else if (count <= 6) {
|
|
allocate(HEADER_SIZE + I8_SIZE);
|
|
writeU8(BOOLEANS_HEADER);
|
|
writeU8((1 << count) | lastByte);
|
|
} else if (count <= 133) {
|
|
allocate(
|
|
HEADER_SIZE + I8_SIZE + I8_SIZE * bytes.length + I8_SIZE
|
|
);
|
|
writeU8(BOOLEANS_HEADER);
|
|
writeU8(0x80 | (count - 7));
|
|
for (const byte of bytes) writeU8(byte);
|
|
writeU8(lastByte);
|
|
} else {
|
|
allocate(
|
|
HEADER_SIZE +
|
|
I8_SIZE +
|
|
I32_SIZE +
|
|
I8_SIZE * bytes.length +
|
|
I8_SIZE
|
|
);
|
|
writeU8(BOOLEANS_HEADER);
|
|
writeU8(0xff);
|
|
writeU32(count);
|
|
for (const byte of bytes) writeU8(byte);
|
|
writeU8(lastByte);
|
|
}
|
|
break;
|
|
}
|
|
case "object": {
|
|
if (thing === null) {
|
|
let n;
|
|
for (n = 1; n < 0x100000104 && i + n < data.length; n++) {
|
|
const item = data[i + n];
|
|
if (item !== null) break;
|
|
}
|
|
i += n - 1;
|
|
if (n === 1) {
|
|
if (i + 1 < data.length) {
|
|
const next = data[i + 1];
|
|
if (next === true) {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL_AND_TRUE_HEADER);
|
|
i++;
|
|
} else if (next === false) {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL_AND_FALSE_HEADER);
|
|
i++;
|
|
} else if (typeof next === "number") {
|
|
const type = identifyNumber(next);
|
|
if (type === 0) {
|
|
allocate(HEADER_SIZE + I8_SIZE);
|
|
writeU8(NULL_AND_I8_HEADER);
|
|
currentBuffer.writeInt8(next, currentPosition);
|
|
currentPosition += I8_SIZE;
|
|
i++;
|
|
} else if (type === 1) {
|
|
allocate(HEADER_SIZE + I32_SIZE);
|
|
writeU8(NULL_AND_I32_HEADER);
|
|
currentBuffer.writeInt32LE(next, currentPosition);
|
|
currentPosition += I32_SIZE;
|
|
i++;
|
|
} else {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL_HEADER);
|
|
}
|
|
} else {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL_HEADER);
|
|
}
|
|
} else {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL_HEADER);
|
|
}
|
|
} else if (n === 2) {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL2_HEADER);
|
|
} else if (n === 3) {
|
|
allocate(HEADER_SIZE);
|
|
writeU8(NULL3_HEADER);
|
|
} else if (n < 260) {
|
|
allocate(HEADER_SIZE + I8_SIZE);
|
|
writeU8(NULLS8_HEADER);
|
|
writeU8(n - 4);
|
|
} else {
|
|
allocate(HEADER_SIZE + I32_SIZE);
|
|
writeU8(NULLS32_HEADER);
|
|
writeU32(n - 260);
|
|
}
|
|
} else if (Buffer.isBuffer(thing)) {
|
|
if (thing.length < 8192) {
|
|
allocate(HEADER_SIZE + I32_SIZE + thing.length);
|
|
writeU8(BUFFER_HEADER);
|
|
writeU32(thing.length);
|
|
thing.copy(currentBuffer, currentPosition);
|
|
currentPosition += thing.length;
|
|
} else {
|
|
allocate(HEADER_SIZE + I32_SIZE);
|
|
writeU8(BUFFER_HEADER);
|
|
writeU32(thing.length);
|
|
flush();
|
|
buffers.push(thing);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case "symbol": {
|
|
if (thing === MEASURE_START_OPERATION) {
|
|
measureStart();
|
|
} else if (thing === MEASURE_END_OPERATION) {
|
|
const size = measureEnd();
|
|
allocate(HEADER_SIZE + I32_SIZE);
|
|
writeU8(I32_HEADER);
|
|
currentBuffer.writeInt32LE(size, currentPosition);
|
|
currentPosition += I32_SIZE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
serializeData(data);
|
|
flush();
|
|
|
|
// avoid leaking memory
|
|
currentBuffer = null;
|
|
leftOverBuffer = null;
|
|
const _buffers = buffers;
|
|
buffers = undefined;
|
|
return _buffers;
|
|
}
|
|
|
|
/**
|
|
* @param {SerializedType} data data
|
|
* @param {Object} context context object
|
|
* @returns {DeserializedType|Promise<DeserializedType>} deserialized data
|
|
*/
|
|
deserialize(data, context) {
|
|
return this._deserialize(data, context);
|
|
}
|
|
|
|
_createLazyDeserialized(content, context) {
|
|
return SerializerMiddleware.createLazy(
|
|
memoize(() => this._deserialize(content, context)),
|
|
this,
|
|
undefined,
|
|
content
|
|
);
|
|
}
|
|
|
|
_deserializeLazy(fn, context) {
|
|
return SerializerMiddleware.deserializeLazy(fn, data =>
|
|
this._deserialize(data, context)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param {SerializedType} data data
|
|
* @param {Object} context context object
|
|
* @returns {DeserializedType} deserialized data
|
|
*/
|
|
_deserialize(data, context) {
|
|
let currentDataItem = 0;
|
|
let currentBuffer = data[0];
|
|
let currentIsBuffer = Buffer.isBuffer(currentBuffer);
|
|
let currentPosition = 0;
|
|
|
|
const retainedBuffer = context.retainedBuffer || (x => x);
|
|
|
|
const checkOverflow = () => {
|
|
if (currentPosition >= currentBuffer.length) {
|
|
currentPosition = 0;
|
|
currentDataItem++;
|
|
currentBuffer =
|
|
currentDataItem < data.length ? data[currentDataItem] : null;
|
|
currentIsBuffer = Buffer.isBuffer(currentBuffer);
|
|
}
|
|
};
|
|
const isInCurrentBuffer = n => {
|
|
return currentIsBuffer && n + currentPosition <= currentBuffer.length;
|
|
};
|
|
/**
|
|
* Reads n bytes
|
|
* @param {number} n amount of bytes to read
|
|
* @returns {Buffer} buffer with bytes
|
|
*/
|
|
const read = n => {
|
|
if (!currentIsBuffer) {
|
|
throw new Error(
|
|
currentBuffer === null
|
|
? "Unexpected end of stream"
|
|
: "Unexpected lazy element in stream"
|
|
);
|
|
}
|
|
const rem = currentBuffer.length - currentPosition;
|
|
if (rem < n) {
|
|
return Buffer.concat([read(rem), read(n - rem)]);
|
|
}
|
|
const res = /** @type {Buffer} */ (currentBuffer).slice(
|
|
currentPosition,
|
|
currentPosition + n
|
|
);
|
|
currentPosition += n;
|
|
checkOverflow();
|
|
return res;
|
|
};
|
|
/**
|
|
* Reads up to n bytes
|
|
* @param {number} n amount of bytes to read
|
|
* @returns {Buffer} buffer with bytes
|
|
*/
|
|
const readUpTo = n => {
|
|
if (!currentIsBuffer) {
|
|
throw new Error(
|
|
currentBuffer === null
|
|
? "Unexpected end of stream"
|
|
: "Unexpected lazy element in stream"
|
|
);
|
|
}
|
|
const rem = currentBuffer.length - currentPosition;
|
|
if (rem < n) {
|
|
n = rem;
|
|
}
|
|
const res = /** @type {Buffer} */ (currentBuffer).slice(
|
|
currentPosition,
|
|
currentPosition + n
|
|
);
|
|
currentPosition += n;
|
|
checkOverflow();
|
|
return res;
|
|
};
|
|
const readU8 = () => {
|
|
if (!currentIsBuffer) {
|
|
throw new Error(
|
|
currentBuffer === null
|
|
? "Unexpected end of stream"
|
|
: "Unexpected lazy element in stream"
|
|
);
|
|
}
|
|
/**
|
|
* There is no need to check remaining buffer size here
|
|
* since {@link checkOverflow} guarantees at least one byte remaining
|
|
*/
|
|
const byte = /** @type {Buffer} */ (currentBuffer).readUInt8(
|
|
currentPosition
|
|
);
|
|
currentPosition += I8_SIZE;
|
|
checkOverflow();
|
|
return byte;
|
|
};
|
|
const readU32 = () => {
|
|
return read(I32_SIZE).readUInt32LE(0);
|
|
};
|
|
const readBits = (data, n) => {
|
|
let mask = 1;
|
|
while (n !== 0) {
|
|
result.push((data & mask) !== 0);
|
|
mask = mask << 1;
|
|
n--;
|
|
}
|
|
};
|
|
const dispatchTable = Array.from({ length: 256 }).map((_, header) => {
|
|
switch (header) {
|
|
case LAZY_HEADER:
|
|
return () => {
|
|
const count = readU32();
|
|
const lengths = Array.from({ length: count }).map(() => readU32());
|
|
const content = [];
|
|
for (let l of lengths) {
|
|
if (l === 0) {
|
|
if (typeof currentBuffer !== "function") {
|
|
throw new Error("Unexpected non-lazy element in stream");
|
|
}
|
|
content.push(currentBuffer);
|
|
currentDataItem++;
|
|
currentBuffer =
|
|
currentDataItem < data.length ? data[currentDataItem] : null;
|
|
currentIsBuffer = Buffer.isBuffer(currentBuffer);
|
|
} else {
|
|
do {
|
|
const buf = readUpTo(l);
|
|
l -= buf.length;
|
|
content.push(retainedBuffer(buf));
|
|
} while (l > 0);
|
|
}
|
|
}
|
|
result.push(this._createLazyDeserialized(content, context));
|
|
};
|
|
case BUFFER_HEADER:
|
|
return () => {
|
|
const len = readU32();
|
|
result.push(retainedBuffer(read(len)));
|
|
};
|
|
case TRUE_HEADER:
|
|
return () => result.push(true);
|
|
case FALSE_HEADER:
|
|
return () => result.push(false);
|
|
case NULL3_HEADER:
|
|
return () => result.push(null, null, null);
|
|
case NULL2_HEADER:
|
|
return () => result.push(null, null);
|
|
case NULL_HEADER:
|
|
return () => result.push(null);
|
|
case NULL_AND_TRUE_HEADER:
|
|
return () => result.push(null, true);
|
|
case NULL_AND_FALSE_HEADER:
|
|
return () => result.push(null, false);
|
|
case NULL_AND_I8_HEADER:
|
|
return () => {
|
|
if (currentIsBuffer) {
|
|
result.push(
|
|
null,
|
|
/** @type {Buffer} */ (currentBuffer).readInt8(currentPosition)
|
|
);
|
|
currentPosition += I8_SIZE;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(null, read(I8_SIZE).readInt8(0));
|
|
}
|
|
};
|
|
case NULL_AND_I32_HEADER:
|
|
return () => {
|
|
result.push(null);
|
|
if (isInCurrentBuffer(I32_SIZE)) {
|
|
result.push(
|
|
/** @type {Buffer} */ (currentBuffer).readInt32LE(
|
|
currentPosition
|
|
)
|
|
);
|
|
currentPosition += I32_SIZE;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(read(I32_SIZE).readInt32LE(0));
|
|
}
|
|
};
|
|
case NULLS8_HEADER:
|
|
return () => {
|
|
const len = readU8() + 4;
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(null);
|
|
}
|
|
};
|
|
case NULLS32_HEADER:
|
|
return () => {
|
|
const len = readU32() + 260;
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(null);
|
|
}
|
|
};
|
|
case BOOLEANS_HEADER:
|
|
return () => {
|
|
const innerHeader = readU8();
|
|
if ((innerHeader & 0xf0) === 0) {
|
|
readBits(innerHeader, 3);
|
|
} else if ((innerHeader & 0xe0) === 0) {
|
|
readBits(innerHeader, 4);
|
|
} else if ((innerHeader & 0xc0) === 0) {
|
|
readBits(innerHeader, 5);
|
|
} else if ((innerHeader & 0x80) === 0) {
|
|
readBits(innerHeader, 6);
|
|
} else if (innerHeader !== 0xff) {
|
|
let count = (innerHeader & 0x7f) + 7;
|
|
while (count > 8) {
|
|
readBits(readU8(), 8);
|
|
count -= 8;
|
|
}
|
|
readBits(readU8(), count);
|
|
} else {
|
|
let count = readU32();
|
|
while (count > 8) {
|
|
readBits(readU8(), 8);
|
|
count -= 8;
|
|
}
|
|
readBits(readU8(), count);
|
|
}
|
|
};
|
|
case STRING_HEADER:
|
|
return () => {
|
|
const len = readU32();
|
|
if (isInCurrentBuffer(len)) {
|
|
result.push(
|
|
currentBuffer.toString(
|
|
undefined,
|
|
currentPosition,
|
|
currentPosition + len
|
|
)
|
|
);
|
|
currentPosition += len;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(read(len).toString());
|
|
}
|
|
};
|
|
case SHORT_STRING_HEADER:
|
|
return () => result.push("");
|
|
case SHORT_STRING_HEADER | 1:
|
|
return () => {
|
|
if (currentIsBuffer) {
|
|
result.push(
|
|
currentBuffer.toString(
|
|
"latin1",
|
|
currentPosition,
|
|
currentPosition + 1
|
|
)
|
|
);
|
|
currentPosition++;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(read(1).toString("latin1"));
|
|
}
|
|
};
|
|
case I8_HEADER:
|
|
return () => {
|
|
if (currentIsBuffer) {
|
|
result.push(
|
|
/** @type {Buffer} */ (currentBuffer).readInt8(currentPosition)
|
|
);
|
|
currentPosition++;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(read(1).readInt8(0));
|
|
}
|
|
};
|
|
default:
|
|
if (header <= 10) {
|
|
return () => result.push(header);
|
|
} else if ((header & SHORT_STRING_HEADER) === SHORT_STRING_HEADER) {
|
|
const len = header & SHORT_STRING_LENGTH_MASK;
|
|
return () => {
|
|
if (isInCurrentBuffer(len)) {
|
|
result.push(
|
|
currentBuffer.toString(
|
|
"latin1",
|
|
currentPosition,
|
|
currentPosition + len
|
|
)
|
|
);
|
|
currentPosition += len;
|
|
checkOverflow();
|
|
} else {
|
|
result.push(read(len).toString("latin1"));
|
|
}
|
|
};
|
|
} else if ((header & NUMBERS_HEADER_MASK) === F64_HEADER) {
|
|
const len = (header & NUMBERS_COUNT_MASK) + 1;
|
|
return () => {
|
|
const need = F64_SIZE * len;
|
|
if (isInCurrentBuffer(need)) {
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(
|
|
/** @type {Buffer} */ (currentBuffer).readDoubleLE(
|
|
currentPosition
|
|
)
|
|
);
|
|
currentPosition += F64_SIZE;
|
|
}
|
|
checkOverflow();
|
|
} else {
|
|
const buf = read(need);
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(buf.readDoubleLE(i * F64_SIZE));
|
|
}
|
|
}
|
|
};
|
|
} else if ((header & NUMBERS_HEADER_MASK) === I32_HEADER) {
|
|
const len = (header & NUMBERS_COUNT_MASK) + 1;
|
|
return () => {
|
|
const need = I32_SIZE * len;
|
|
if (isInCurrentBuffer(need)) {
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(
|
|
/** @type {Buffer} */ (currentBuffer).readInt32LE(
|
|
currentPosition
|
|
)
|
|
);
|
|
currentPosition += I32_SIZE;
|
|
}
|
|
checkOverflow();
|
|
} else {
|
|
const buf = read(need);
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(buf.readInt32LE(i * I32_SIZE));
|
|
}
|
|
}
|
|
};
|
|
} else if ((header & NUMBERS_HEADER_MASK) === I8_HEADER) {
|
|
const len = (header & NUMBERS_COUNT_MASK) + 1;
|
|
return () => {
|
|
const need = I8_SIZE * len;
|
|
if (isInCurrentBuffer(need)) {
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(
|
|
/** @type {Buffer} */ (currentBuffer).readInt8(
|
|
currentPosition
|
|
)
|
|
);
|
|
currentPosition += I8_SIZE;
|
|
}
|
|
checkOverflow();
|
|
} else {
|
|
const buf = read(need);
|
|
for (let i = 0; i < len; i++) {
|
|
result.push(buf.readInt8(i * I8_SIZE));
|
|
}
|
|
}
|
|
};
|
|
} else {
|
|
return () => {
|
|
throw new Error(
|
|
`Unexpected header byte 0x${header.toString(16)}`
|
|
);
|
|
};
|
|
}
|
|
}
|
|
});
|
|
|
|
/** @type {DeserializedType} */
|
|
let result = [];
|
|
while (currentBuffer !== null) {
|
|
if (typeof currentBuffer === "function") {
|
|
result.push(this._deserializeLazy(currentBuffer, context));
|
|
currentDataItem++;
|
|
currentBuffer =
|
|
currentDataItem < data.length ? data[currentDataItem] : null;
|
|
currentIsBuffer = Buffer.isBuffer(currentBuffer);
|
|
} else {
|
|
const header = readU8();
|
|
dispatchTable[header]();
|
|
}
|
|
}
|
|
|
|
// avoid leaking memory in context
|
|
let _result = result;
|
|
result = undefined;
|
|
return _result;
|
|
}
|
|
}
|
|
|
|
module.exports = BinaryMiddleware;
|
|
|
|
module.exports.MEASURE_START_OPERATION = MEASURE_START_OPERATION;
|
|
module.exports.MEASURE_END_OPERATION = MEASURE_END_OPERATION;
|