@azure/cosmos/dist/commonjs/utils/hashing/encoding/number.js

Microsoft Azure Cosmos DB Service Node.js SDK for NOSQL API

var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var number_exports = {};
__export(number_exports, {
  doubleToByteArrayBigInt: () => doubleToByteArrayBigInt,
  writeNumberForBinaryEncodingBigInt: () => writeNumberForBinaryEncodingBigInt
});
module.exports = __toCommonJS(number_exports);
var import_uint8 = require("../../uint8.js");
var import_prefix = require("./prefix.js");
function writeNumberForBinaryEncodingBigInt(hash) {
  let payload = encodeNumberAsUInt64BigInt(hash);
  let outputStream = (0, import_uint8.hexStringToUint8Array)(import_prefix.BytePrefix.Number);
  const firstChunk = payload >> BigInt(56) & BigInt(255);
  outputStream = (0, import_uint8.concatUint8Arrays)([
    outputStream,
    (0, import_uint8.hexStringToUint8Array)(firstChunk.toString(16).padStart(2, "0"))
  ]);
  payload = payload << BigInt(8) & BigInt("0xffffffffffffffff");
  let byteToWrite = BigInt(0);
  let firstIteration = true;
  do {
    if (!firstIteration) {
      const padded2 = byteToWrite.toString(16).padStart(2, "0");
      if (padded2 !== "00") {
        outputStream = (0, import_uint8.concatUint8Arrays)([outputStream, (0, import_uint8.hexStringToUint8Array)(padded2)]);
      }
    } else {
      firstIteration = false;
    }
    const shifted = payload >> BigInt(56) & BigInt(255);
    byteToWrite = shifted | BigInt(1);
    payload = payload << BigInt(7) & BigInt("0xffffffffffffffff");
  } while (payload !== BigInt(0));
  const lastChunk = byteToWrite & BigInt(254);
  const padded = lastChunk.toString(16).padStart(2, "0");
  if (padded !== "00") {
    outputStream = (0, import_uint8.concatUint8Arrays)([outputStream, (0, import_uint8.hexStringToUint8Array)(padded)]);
  }
  return outputStream;
}
function encodeNumberAsUInt64BigInt(value) {
  const rawValueBits = getRawBitsBigInt(value);
  const mask = BigInt("0x8000000000000000");
  return mask > rawValueBits ? rawValueBits ^ mask : ~rawValueBits + BigInt(1);
}
function getRawBitsBigInt(value) {
  const buffer = new ArrayBuffer(8);
  const view = new DataView(buffer);
  view.setFloat64(0, value);
  return BigInt("0x" + buf2hex(new Uint8Array(buffer)));
}
function buf2hex(arr) {
  return Array.from(arr).map((x) => x.toString(16).padStart(2, "0")).join("");
}
function doubleToByteArrayBigInt(double) {
  const output = new Uint8Array(8);
  const lng = getRawBitsBigInt(double);
  for (let i = 0; i < 8; i++) {
    output[i] = Number(lng >> BigInt(i * 8) & BigInt(255));
  }
  return output;
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  doubleToByteArrayBigInt,
  writeNumberForBinaryEncodingBigInt
});