first commit
This commit is contained in:
156
app_vue/node_modules/@webassemblyjs/leb128/lib/bits.js
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156
app_vue/node_modules/@webassemblyjs/leb128/lib/bits.js
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// Copyright 2012 The Obvious Corporation.
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/*
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* bits: Bitwise buffer utilities. The utilities here treat a buffer
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* as a little-endian bigint, so the lowest-order bit is bit #0 of
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* `buffer[0]`, and the highest-order bit is bit #7 of
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* `buffer[buffer.length - 1]`.
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*/
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||||
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||||
/*
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||||
* Modules used
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||||
*/
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"use strict";
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||||
/*
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||||
* Exported bindings
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*/
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/**
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* Extracts the given number of bits from the buffer at the indicated
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* index, returning a simple number as the result. If bits are requested
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* that aren't covered by the buffer, the `defaultBit` is used as their
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* value.
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*
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* The `bitLength` must be no more than 32. The `defaultBit` if not
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* specified is taken to be `0`.
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*/
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||||
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.extract = extract;
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exports.inject = inject;
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exports.getSign = getSign;
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exports.highOrder = highOrder;
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function extract(buffer, bitIndex, bitLength, defaultBit) {
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if (bitLength < 0 || bitLength > 32) {
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throw new Error("Bad value for bitLength.");
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}
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if (defaultBit === undefined) {
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defaultBit = 0;
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} else if (defaultBit !== 0 && defaultBit !== 1) {
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throw new Error("Bad value for defaultBit.");
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}
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var defaultByte = defaultBit * 0xff;
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var result = 0; // All starts are inclusive. The {endByte, endBit} pair is exclusive, but
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// if endBit !== 0, then endByte is inclusive.
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var lastBit = bitIndex + bitLength;
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var startByte = Math.floor(bitIndex / 8);
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var startBit = bitIndex % 8;
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var endByte = Math.floor(lastBit / 8);
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var endBit = lastBit % 8;
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if (endBit !== 0) {
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// `(1 << endBit) - 1` is the mask of all bits up to but not including
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// the endBit.
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result = get(endByte) & (1 << endBit) - 1;
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}
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while (endByte > startByte) {
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endByte--;
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result = result << 8 | get(endByte);
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}
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result >>>= startBit;
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return result;
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function get(index) {
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var result = buffer[index];
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return result === undefined ? defaultByte : result;
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}
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}
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/**
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* Injects the given bits into the given buffer at the given index. Any
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* bits in the value beyond the length to set are ignored.
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*/
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function inject(buffer, bitIndex, bitLength, value) {
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if (bitLength < 0 || bitLength > 32) {
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throw new Error("Bad value for bitLength.");
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}
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var lastByte = Math.floor((bitIndex + bitLength - 1) / 8);
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if (bitIndex < 0 || lastByte >= buffer.length) {
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throw new Error("Index out of range.");
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} // Just keeping it simple, until / unless profiling shows that this
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// is a problem.
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var atByte = Math.floor(bitIndex / 8);
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var atBit = bitIndex % 8;
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while (bitLength > 0) {
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if (value & 1) {
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buffer[atByte] |= 1 << atBit;
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} else {
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buffer[atByte] &= ~(1 << atBit);
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}
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value >>= 1;
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bitLength--;
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atBit = (atBit + 1) % 8;
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if (atBit === 0) {
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atByte++;
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}
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}
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}
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/**
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* Gets the sign bit of the given buffer.
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*/
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function getSign(buffer) {
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return buffer[buffer.length - 1] >>> 7;
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}
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/**
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* Gets the zero-based bit number of the highest-order bit with the
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* given value in the given buffer.
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*
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* If the buffer consists entirely of the other bit value, then this returns
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* `-1`.
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*/
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function highOrder(bit, buffer) {
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var length = buffer.length;
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var fullyWrongByte = (bit ^ 1) * 0xff; // the other-bit extended to a full byte
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while (length > 0 && buffer[length - 1] === fullyWrongByte) {
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length--;
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}
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||||
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||||
if (length === 0) {
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// Degenerate case. The buffer consists entirely of ~bit.
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return -1;
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}
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var byteToCheck = buffer[length - 1];
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var result = length * 8 - 1;
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for (var i = 7; i > 0; i--) {
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if ((byteToCheck >> i & 1) === bit) {
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break;
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}
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result--;
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}
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return result;
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}
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246
app_vue/node_modules/@webassemblyjs/leb128/lib/bufs.js
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246
app_vue/node_modules/@webassemblyjs/leb128/lib/bufs.js
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"use strict";
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||||
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||||
Object.defineProperty(exports, "__esModule", {
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value: true
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||||
});
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exports.alloc = alloc;
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||||
exports.free = free;
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exports.resize = resize;
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exports.readInt = readInt;
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exports.readUInt = readUInt;
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exports.writeInt64 = writeInt64;
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exports.writeUInt64 = writeUInt64;
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// Copyright 2012 The Obvious Corporation.
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/*
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* bufs: Buffer utilities.
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*/
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||||
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||||
/*
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* Module variables
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||||
*/
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||||
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/** Pool of buffers, where `bufPool[x].length === x`. */
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var bufPool = [];
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/** Maximum length of kept temporary buffers. */
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var TEMP_BUF_MAXIMUM_LENGTH = 20;
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/** Minimum exactly-representable 64-bit int. */
|
||||
|
||||
var MIN_EXACT_INT64 = -0x8000000000000000;
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||||
/** Maximum exactly-representable 64-bit int. */
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||||
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||||
var MAX_EXACT_INT64 = 0x7ffffffffffffc00;
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||||
/** Maximum exactly-representable 64-bit uint. */
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||||
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var MAX_EXACT_UINT64 = 0xfffffffffffff800;
|
||||
/**
|
||||
* The int value consisting just of a 1 in bit #32 (that is, one more
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* than the maximum 32-bit unsigned value).
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||||
*/
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||||
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||||
var BIT_32 = 0x100000000;
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||||
/**
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||||
* The int value consisting just of a 1 in bit #64 (that is, one more
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||||
* than the maximum 64-bit unsigned value).
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||||
*/
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||||
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||||
var BIT_64 = 0x10000000000000000;
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||||
/*
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||||
* Helper functions
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||||
*/
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||||
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||||
/**
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||||
* Masks off all but the lowest bit set of the given number.
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*/
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function lowestBit(num) {
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return num & -num;
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||||
}
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/**
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||||
* Gets whether trying to add the second number to the first is lossy
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* (inexact). The first number is meant to be an accumulated result.
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*/
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||||
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||||
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||||
function isLossyToAdd(accum, num) {
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if (num === 0) {
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return false;
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}
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var lowBit = lowestBit(num);
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var added = accum + lowBit;
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if (added === accum) {
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return true;
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}
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if (added - lowBit !== accum) {
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return true;
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||||
}
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return false;
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}
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||||
/*
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||||
* Exported functions
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||||
*/
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||||
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||||
/**
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||||
* Allocates a buffer of the given length, which is initialized
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* with all zeroes. This returns a buffer from the pool if it is
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||||
* available, or a freshly-allocated buffer if not.
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||||
*/
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||||
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||||
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||||
function alloc(length) {
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||||
var result = bufPool[length];
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||||
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||||
if (result) {
|
||||
bufPool[length] = undefined;
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||||
} else {
|
||||
result = new Uint8Array(length);
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||||
}
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||||
result.fill(0);
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||||
return result;
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||||
}
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||||
/**
|
||||
* Releases a buffer back to the pool.
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||||
*/
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||||
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||||
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||||
function free(buffer) {
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||||
var length = buffer.length;
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||||
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||||
if (length < TEMP_BUF_MAXIMUM_LENGTH) {
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||||
bufPool[length] = buffer;
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||||
}
|
||||
}
|
||||
/**
|
||||
* Resizes a buffer, returning a new buffer. Returns the argument if
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||||
* the length wouldn't actually change. This function is only safe to
|
||||
* use if the given buffer was allocated within this module (since
|
||||
* otherwise the buffer might possibly be shared externally).
|
||||
*/
|
||||
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||||
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||||
function resize(buffer, length) {
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||||
if (length === buffer.length) {
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||||
return buffer;
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||||
}
|
||||
|
||||
var newBuf = alloc(length);
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||||
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||||
for (var i = 0; i <= buffer.length; i++) {
|
||||
newBuf[i] = buffer[i];
|
||||
}
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||||
|
||||
free(buffer);
|
||||
return newBuf;
|
||||
}
|
||||
/**
|
||||
* Reads an arbitrary signed int from a buffer.
|
||||
*/
|
||||
|
||||
|
||||
function readInt(buffer) {
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||||
var length = buffer.length;
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||||
var positive = buffer[length - 1] < 0x80;
|
||||
var result = positive ? 0 : -1;
|
||||
var lossy = false; // Note: We can't use bit manipulation here, since that stops
|
||||
// working if the result won't fit in a 32-bit int.
|
||||
|
||||
if (length < 7) {
|
||||
// Common case which can't possibly be lossy (because the result has
|
||||
// no more than 48 bits, and loss only happens with 54 or more).
|
||||
for (var i = length - 1; i >= 0; i--) {
|
||||
result = result * 0x100 + buffer[i];
|
||||
}
|
||||
} else {
|
||||
for (var _i = length - 1; _i >= 0; _i--) {
|
||||
var one = buffer[_i];
|
||||
result *= 0x100;
|
||||
|
||||
if (isLossyToAdd(result, one)) {
|
||||
lossy = true;
|
||||
}
|
||||
|
||||
result += one;
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
value: result,
|
||||
lossy: lossy
|
||||
};
|
||||
}
|
||||
/**
|
||||
* Reads an arbitrary unsigned int from a buffer.
|
||||
*/
|
||||
|
||||
|
||||
function readUInt(buffer) {
|
||||
var length = buffer.length;
|
||||
var result = 0;
|
||||
var lossy = false; // Note: See above in re bit manipulation.
|
||||
|
||||
if (length < 7) {
|
||||
// Common case which can't possibly be lossy (see above).
|
||||
for (var i = length - 1; i >= 0; i--) {
|
||||
result = result * 0x100 + buffer[i];
|
||||
}
|
||||
} else {
|
||||
for (var _i2 = length - 1; _i2 >= 0; _i2--) {
|
||||
var one = buffer[_i2];
|
||||
result *= 0x100;
|
||||
|
||||
if (isLossyToAdd(result, one)) {
|
||||
lossy = true;
|
||||
}
|
||||
|
||||
result += one;
|
||||
}
|
||||
}
|
||||
|
||||
return {
|
||||
value: result,
|
||||
lossy: lossy
|
||||
};
|
||||
}
|
||||
/**
|
||||
* Writes a little-endian 64-bit signed int into a buffer.
|
||||
*/
|
||||
|
||||
|
||||
function writeInt64(value, buffer) {
|
||||
if (value < MIN_EXACT_INT64 || value > MAX_EXACT_INT64) {
|
||||
throw new Error("Value out of range.");
|
||||
}
|
||||
|
||||
if (value < 0) {
|
||||
value += BIT_64;
|
||||
}
|
||||
|
||||
writeUInt64(value, buffer);
|
||||
}
|
||||
/**
|
||||
* Writes a little-endian 64-bit unsigned int into a buffer.
|
||||
*/
|
||||
|
||||
|
||||
function writeUInt64(value, buffer) {
|
||||
if (value < 0 || value > MAX_EXACT_UINT64) {
|
||||
throw new Error("Value out of range.");
|
||||
}
|
||||
|
||||
var lowWord = value % BIT_32;
|
||||
var highWord = Math.floor(value / BIT_32);
|
||||
buffer[0] = lowWord & 0xff;
|
||||
buffer[1] = lowWord >> 8 & 0xff;
|
||||
buffer[2] = lowWord >> 16 & 0xff;
|
||||
buffer[3] = lowWord >> 24 & 0xff;
|
||||
buffer[4] = highWord & 0xff;
|
||||
buffer[5] = highWord >> 8 & 0xff;
|
||||
buffer[6] = highWord >> 16 & 0xff;
|
||||
buffer[7] = highWord >> 24 & 0xff;
|
||||
}
|
59
app_vue/node_modules/@webassemblyjs/leb128/lib/index.js
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vendored
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59
app_vue/node_modules/@webassemblyjs/leb128/lib/index.js
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@ -0,0 +1,59 @@
|
||||
"use strict";
|
||||
|
||||
Object.defineProperty(exports, "__esModule", {
|
||||
value: true
|
||||
});
|
||||
exports.decodeInt64 = decodeInt64;
|
||||
exports.decodeUInt64 = decodeUInt64;
|
||||
exports.decodeInt32 = decodeInt32;
|
||||
exports.decodeUInt32 = decodeUInt32;
|
||||
exports.encodeU32 = encodeU32;
|
||||
exports.encodeI32 = encodeI32;
|
||||
exports.encodeI64 = encodeI64;
|
||||
exports.MAX_NUMBER_OF_BYTE_U64 = exports.MAX_NUMBER_OF_BYTE_U32 = void 0;
|
||||
|
||||
var _leb = _interopRequireDefault(require("./leb"));
|
||||
|
||||
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
|
||||
|
||||
/**
|
||||
* According to https://webassembly.github.io/spec/core/binary/values.html#binary-int
|
||||
* max = ceil(32/7)
|
||||
*/
|
||||
var MAX_NUMBER_OF_BYTE_U32 = 5;
|
||||
/**
|
||||
* According to https://webassembly.github.io/spec/core/binary/values.html#binary-int
|
||||
* max = ceil(64/7)
|
||||
*/
|
||||
|
||||
exports.MAX_NUMBER_OF_BYTE_U32 = MAX_NUMBER_OF_BYTE_U32;
|
||||
var MAX_NUMBER_OF_BYTE_U64 = 10;
|
||||
exports.MAX_NUMBER_OF_BYTE_U64 = MAX_NUMBER_OF_BYTE_U64;
|
||||
|
||||
function decodeInt64(encodedBuffer, index) {
|
||||
return _leb["default"].decodeInt64(encodedBuffer, index);
|
||||
}
|
||||
|
||||
function decodeUInt64(encodedBuffer, index) {
|
||||
return _leb["default"].decodeUInt64(encodedBuffer, index);
|
||||
}
|
||||
|
||||
function decodeInt32(encodedBuffer, index) {
|
||||
return _leb["default"].decodeInt32(encodedBuffer, index);
|
||||
}
|
||||
|
||||
function decodeUInt32(encodedBuffer, index) {
|
||||
return _leb["default"].decodeUInt32(encodedBuffer, index);
|
||||
}
|
||||
|
||||
function encodeU32(v) {
|
||||
return _leb["default"].encodeUInt32(v);
|
||||
}
|
||||
|
||||
function encodeI32(v) {
|
||||
return _leb["default"].encodeInt32(v);
|
||||
}
|
||||
|
||||
function encodeI64(v) {
|
||||
return _leb["default"].encodeInt64(v);
|
||||
}
|
347
app_vue/node_modules/@webassemblyjs/leb128/lib/leb.js
generated
vendored
Normal file
347
app_vue/node_modules/@webassemblyjs/leb128/lib/leb.js
generated
vendored
Normal file
@ -0,0 +1,347 @@
|
||||
// Copyright 2012 The Obvious Corporation.
|
||||
|
||||
/*
|
||||
* leb: LEB128 utilities.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Modules used
|
||||
*/
|
||||
"use strict";
|
||||
|
||||
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
|
||||
|
||||
Object.defineProperty(exports, "__esModule", {
|
||||
value: true
|
||||
});
|
||||
exports["default"] = void 0;
|
||||
|
||||
var _long = _interopRequireDefault(require("@xtuc/long"));
|
||||
|
||||
var bits = _interopRequireWildcard(require("./bits"));
|
||||
|
||||
var bufs = _interopRequireWildcard(require("./bufs"));
|
||||
|
||||
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
|
||||
|
||||
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
|
||||
|
||||
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
|
||||
|
||||
/*
|
||||
* Module variables
|
||||
*/
|
||||
|
||||
/** The minimum possible 32-bit signed int. */
|
||||
var MIN_INT32 = -0x80000000;
|
||||
/** The maximum possible 32-bit signed int. */
|
||||
|
||||
var MAX_INT32 = 0x7fffffff;
|
||||
/** The maximum possible 32-bit unsigned int. */
|
||||
|
||||
var MAX_UINT32 = 0xffffffff;
|
||||
/** The minimum possible 64-bit signed int. */
|
||||
// const MIN_INT64 = -0x8000000000000000;
|
||||
|
||||
/**
|
||||
* The maximum possible 64-bit signed int that is representable as a
|
||||
* JavaScript number.
|
||||
*/
|
||||
// const MAX_INT64 = 0x7ffffffffffffc00;
|
||||
|
||||
/**
|
||||
* The maximum possible 64-bit unsigned int that is representable as a
|
||||
* JavaScript number.
|
||||
*/
|
||||
// const MAX_UINT64 = 0xfffffffffffff800;
|
||||
|
||||
/*
|
||||
* Helper functions
|
||||
*/
|
||||
|
||||
/**
|
||||
* Determines the number of bits required to encode the number
|
||||
* represented in the given buffer as a signed value. The buffer is
|
||||
* taken to represent a signed number in little-endian form.
|
||||
*
|
||||
* The number of bits to encode is the (zero-based) bit number of the
|
||||
* highest-order non-sign-matching bit, plus two. For example:
|
||||
*
|
||||
* 11111011 01110101
|
||||
* high low
|
||||
*
|
||||
* The sign bit here is 1 (that is, it's a negative number). The highest
|
||||
* bit number that doesn't match the sign is bit #10 (where the lowest-order
|
||||
* bit is bit #0). So, we have to encode at least 12 bits total.
|
||||
*
|
||||
* As a special degenerate case, the numbers 0 and -1 each require just one bit.
|
||||
*/
|
||||
|
||||
function signedBitCount(buffer) {
|
||||
return bits.highOrder(bits.getSign(buffer) ^ 1, buffer) + 2;
|
||||
}
|
||||
/**
|
||||
* Determines the number of bits required to encode the number
|
||||
* represented in the given buffer as an unsigned value. The buffer is
|
||||
* taken to represent an unsigned number in little-endian form.
|
||||
*
|
||||
* The number of bits to encode is the (zero-based) bit number of the
|
||||
* highest-order 1 bit, plus one. For example:
|
||||
*
|
||||
* 00011000 01010011
|
||||
* high low
|
||||
*
|
||||
* The highest-order 1 bit here is bit #12 (where the lowest-order bit
|
||||
* is bit #0). So, we have to encode at least 13 bits total.
|
||||
*
|
||||
* As a special degenerate case, the number 0 requires 1 bit.
|
||||
*/
|
||||
|
||||
|
||||
function unsignedBitCount(buffer) {
|
||||
var result = bits.highOrder(1, buffer) + 1;
|
||||
return result ? result : 1;
|
||||
}
|
||||
/**
|
||||
* Common encoder for both signed and unsigned ints. This takes a
|
||||
* bigint-ish buffer, returning an LEB128-encoded buffer.
|
||||
*/
|
||||
|
||||
|
||||
function encodeBufferCommon(buffer, signed) {
|
||||
var signBit;
|
||||
var bitCount;
|
||||
|
||||
if (signed) {
|
||||
signBit = bits.getSign(buffer);
|
||||
bitCount = signedBitCount(buffer);
|
||||
} else {
|
||||
signBit = 0;
|
||||
bitCount = unsignedBitCount(buffer);
|
||||
}
|
||||
|
||||
var byteCount = Math.ceil(bitCount / 7);
|
||||
var result = bufs.alloc(byteCount);
|
||||
|
||||
for (var i = 0; i < byteCount; i++) {
|
||||
var payload = bits.extract(buffer, i * 7, 7, signBit);
|
||||
result[i] = payload | 0x80;
|
||||
} // Mask off the top bit of the last byte, to indicate the end of the
|
||||
// encoding.
|
||||
|
||||
|
||||
result[byteCount - 1] &= 0x7f;
|
||||
return result;
|
||||
}
|
||||
/**
|
||||
* Gets the byte-length of the value encoded in the given buffer at
|
||||
* the given index.
|
||||
*/
|
||||
|
||||
|
||||
function encodedLength(encodedBuffer, index) {
|
||||
var result = 0;
|
||||
|
||||
while (encodedBuffer[index + result] >= 0x80) {
|
||||
result++;
|
||||
}
|
||||
|
||||
result++; // to account for the last byte
|
||||
|
||||
if (index + result > encodedBuffer.length) {// FIXME(sven): seems to cause false positives
|
||||
// throw new Error("integer representation too long");
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
/**
|
||||
* Common decoder for both signed and unsigned ints. This takes an
|
||||
* LEB128-encoded buffer, returning a bigint-ish buffer.
|
||||
*/
|
||||
|
||||
|
||||
function decodeBufferCommon(encodedBuffer, index, signed) {
|
||||
index = index === undefined ? 0 : index;
|
||||
var length = encodedLength(encodedBuffer, index);
|
||||
var bitLength = length * 7;
|
||||
var byteLength = Math.ceil(bitLength / 8);
|
||||
var result = bufs.alloc(byteLength);
|
||||
var outIndex = 0;
|
||||
|
||||
while (length > 0) {
|
||||
bits.inject(result, outIndex, 7, encodedBuffer[index]);
|
||||
outIndex += 7;
|
||||
index++;
|
||||
length--;
|
||||
}
|
||||
|
||||
var signBit;
|
||||
var signByte;
|
||||
|
||||
if (signed) {
|
||||
// Sign-extend the last byte.
|
||||
var lastByte = result[byteLength - 1];
|
||||
var endBit = outIndex % 8;
|
||||
|
||||
if (endBit !== 0) {
|
||||
var shift = 32 - endBit; // 32 because JS bit ops work on 32-bit ints.
|
||||
|
||||
lastByte = result[byteLength - 1] = lastByte << shift >> shift & 0xff;
|
||||
}
|
||||
|
||||
signBit = lastByte >> 7;
|
||||
signByte = signBit * 0xff;
|
||||
} else {
|
||||
signBit = 0;
|
||||
signByte = 0;
|
||||
} // Slice off any superfluous bytes, that is, ones that add no meaningful
|
||||
// bits (because the value would be the same if they were removed).
|
||||
|
||||
|
||||
while (byteLength > 1 && result[byteLength - 1] === signByte && (!signed || result[byteLength - 2] >> 7 === signBit)) {
|
||||
byteLength--;
|
||||
}
|
||||
|
||||
result = bufs.resize(result, byteLength);
|
||||
return {
|
||||
value: result,
|
||||
nextIndex: index
|
||||
};
|
||||
}
|
||||
/*
|
||||
* Exported bindings
|
||||
*/
|
||||
|
||||
|
||||
function encodeIntBuffer(buffer) {
|
||||
return encodeBufferCommon(buffer, true);
|
||||
}
|
||||
|
||||
function decodeIntBuffer(encodedBuffer, index) {
|
||||
return decodeBufferCommon(encodedBuffer, index, true);
|
||||
}
|
||||
|
||||
function encodeInt32(num) {
|
||||
var buf = new Uint8Array(4);
|
||||
buf[0] = num & 0xff;
|
||||
buf[1] = num >> 8 & 0xff;
|
||||
buf[2] = num >> 16 & 0xff;
|
||||
buf[3] = num >> 24 & 0xff;
|
||||
var result = encodeIntBuffer(buf);
|
||||
return result;
|
||||
}
|
||||
|
||||
function decodeInt32(encodedBuffer, index) {
|
||||
var result = decodeIntBuffer(encodedBuffer, index);
|
||||
var parsed = bufs.readInt(result.value);
|
||||
var value = parsed.value;
|
||||
bufs.free(result.value);
|
||||
|
||||
if (value < MIN_INT32 || value > MAX_INT32) {
|
||||
throw new Error("integer too large");
|
||||
}
|
||||
|
||||
return {
|
||||
value: value,
|
||||
nextIndex: result.nextIndex
|
||||
};
|
||||
}
|
||||
|
||||
function encodeInt64(num) {
|
||||
var buf = bufs.alloc(8);
|
||||
bufs.writeInt64(num, buf);
|
||||
var result = encodeIntBuffer(buf);
|
||||
bufs.free(buf);
|
||||
return result;
|
||||
}
|
||||
|
||||
function decodeInt64(encodedBuffer, index) {
|
||||
var result = decodeIntBuffer(encodedBuffer, index); // sign-extend if necessary
|
||||
|
||||
var length = result.value.length;
|
||||
|
||||
if (result.value[length - 1] >> 7) {
|
||||
result.value = bufs.resize(result.value, 8);
|
||||
result.value.fill(255, length);
|
||||
}
|
||||
|
||||
var value = _long["default"].fromBytesLE(result.value, false);
|
||||
|
||||
bufs.free(result.value);
|
||||
return {
|
||||
value: value,
|
||||
nextIndex: result.nextIndex,
|
||||
lossy: false
|
||||
};
|
||||
}
|
||||
|
||||
function encodeUIntBuffer(buffer) {
|
||||
return encodeBufferCommon(buffer, false);
|
||||
}
|
||||
|
||||
function decodeUIntBuffer(encodedBuffer, index) {
|
||||
return decodeBufferCommon(encodedBuffer, index, false);
|
||||
}
|
||||
|
||||
function encodeUInt32(num) {
|
||||
var buf = new Uint8Array(4);
|
||||
buf[0] = num & 0xff;
|
||||
buf[1] = num >> 8 & 0xff;
|
||||
buf[2] = num >> 16 & 0xff;
|
||||
buf[3] = num >> 24 & 0xff;
|
||||
var result = encodeUIntBuffer(buf);
|
||||
return result;
|
||||
}
|
||||
|
||||
function decodeUInt32(encodedBuffer, index) {
|
||||
var result = decodeUIntBuffer(encodedBuffer, index);
|
||||
var parsed = bufs.readUInt(result.value);
|
||||
var value = parsed.value;
|
||||
bufs.free(result.value);
|
||||
|
||||
if (value > MAX_UINT32) {
|
||||
throw new Error("integer too large");
|
||||
}
|
||||
|
||||
return {
|
||||
value: value,
|
||||
nextIndex: result.nextIndex
|
||||
};
|
||||
}
|
||||
|
||||
function encodeUInt64(num) {
|
||||
var buf = bufs.alloc(8);
|
||||
bufs.writeUInt64(num, buf);
|
||||
var result = encodeUIntBuffer(buf);
|
||||
bufs.free(buf);
|
||||
return result;
|
||||
}
|
||||
|
||||
function decodeUInt64(encodedBuffer, index) {
|
||||
var result = decodeUIntBuffer(encodedBuffer, index);
|
||||
|
||||
var value = _long["default"].fromBytesLE(result.value, true);
|
||||
|
||||
bufs.free(result.value);
|
||||
return {
|
||||
value: value,
|
||||
nextIndex: result.nextIndex,
|
||||
lossy: false
|
||||
};
|
||||
}
|
||||
|
||||
var _default = {
|
||||
decodeInt32: decodeInt32,
|
||||
decodeInt64: decodeInt64,
|
||||
decodeIntBuffer: decodeIntBuffer,
|
||||
decodeUInt32: decodeUInt32,
|
||||
decodeUInt64: decodeUInt64,
|
||||
decodeUIntBuffer: decodeUIntBuffer,
|
||||
encodeInt32: encodeInt32,
|
||||
encodeInt64: encodeInt64,
|
||||
encodeIntBuffer: encodeIntBuffer,
|
||||
encodeUInt32: encodeUInt32,
|
||||
encodeUInt64: encodeUInt64,
|
||||
encodeUIntBuffer: encodeUIntBuffer
|
||||
};
|
||||
exports["default"] = _default;
|
Reference in New Issue
Block a user