tedious/lib/data-types/money.js

A TDS driver, for connecting to MS SQLServer databases.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _moneyn = _interopRequireDefault(require("./moneyn"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const SHIFT_LEFT_32 = (1 << 16) * (1 << 16);
const SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32;
const NULL_LENGTH = Buffer.from([0x00]);
const DATA_LENGTH = Buffer.from([0x08]);
const Money = {
  id: 0x3C,
  type: 'MONEY',
  name: 'Money',
  declaration: function () {
    return 'money';
  },
  generateTypeInfo: function () {
    return Buffer.from([_moneyn.default.id, 0x08]);
  },
  generateParameterLength(parameter, options) {
    if (parameter.value == null) {
      return NULL_LENGTH;
    }
    return DATA_LENGTH;
  },
  *generateParameterData(parameter, options) {
    if (parameter.value == null) {
      return;
    }
    const value = parameter.value * 10000;
    const buffer = Buffer.alloc(8);
    buffer.writeInt32LE(Math.floor(value * SHIFT_RIGHT_32), 0);
    buffer.writeInt32LE(value & -1, 4);
    yield buffer;
  },
  validate: function (value) {
    if (value == null) {
      return null;
    }
    value = parseFloat(value);
    if (isNaN(value)) {
      throw new TypeError('Invalid number.');
    }
    // money： -922337203685477.5808 to 922337203685477.5807
    // in javascript -922337203685477.5808 === -922337203685477.6
    //                922337203685477.5807 === 922337203685477.6
    // javascript number doesn't have enough precision.
    if (value < -922337203685477.6 || value > 922337203685477.6) {
      throw new TypeError('Value must be between -922337203685477.5808 and 922337203685477.5807, inclusive.');
    }
    return value;
  }
};
var _default = exports.default = Money;
module.exports = Money;
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QUFPVixLQUFLO0VBQ2Q7QUFDRixDQUFDO0FBQUMsSUFBQVcsUUFBQSxHQUFBQyxPQUFBLENBQUE3QixPQUFBLEdBRWFPLEtBQUs7QUFDcEJ1QixNQUFNLENBQUNELE9BQU8sR0FBR3RCLEtBQUsifQ==