deepcopy/cjs/copy_map.js

deep copy data

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _buffer = require("./buffer.js");

var _global = require("./global.js");

/**
 * copy ArrayBuffer
 *
 * @param {ArrayBuffer} value
 * @return {ArrayBuffer}
 */
function copyArrayBuffer(value) {
  return value.slice(0);
}
/**
 * copy Boolean
 *
 * @param {Boolean} value
 * @return {Boolean}
 */


function copyBoolean(value) {
  return new Boolean(value.valueOf());
}
/**
 * copy DataView
 *
 * @param {DataView} value
 * @return {DataView}
 */


function copyDataView(value) {
  // TODO: copy ArrayBuffer?
  return new DataView(value.buffer);
}
/**
 * copy Buffer
 *
 * @param {Buffer} value
 * @return {Buffer}
 */


function copyBuffer(value) {
  return (0, _buffer.copy)(value);
}
/**
 * copy Date
 *
 * @param {Date} value
 * @return {Date}
 */


function copyDate(value) {
  return new Date(value.getTime());
}
/**
 * copy Number
 *
 * @param {Number} value
 * @return {Number}
 */


function copyNumber(value) {
  return new Number(value);
}
/**
 * copy RegExp
 *
 * @param {RegExp} value
 * @return {RegExp}
 */


function copyRegExp(value) {
  return new RegExp(value.source, value.flags);
}
/**
 * copy String
 *
 * @param {String} value
 * @return {String}
 */


function copyString(value) {
  return new String(value);
}
/**
 * copy TypedArray
 *
 * @param {*} value
 * @return {*}
 */


function copyTypedArray(value, type) {
  const typedArray = _global.globalObject[type];

  if (typedArray.from) {
    return _global.globalObject[type].from(value);
  }

  return new _global.globalObject[type](value);
}
/**
 * shallow copy
 *
 * @param {*} value
 * @return {*}
 */


function shallowCopy(value) {
  return value;
}
/**
 * get empty Array
 *
 * @return {Array}
 */


function getEmptyArray() {
  return [];
}
/**
 * get empty Map
 *
 * @return {Map}
 */


function getEmptyMap() {
  return new Map();
}
/**
 * get empty Object
 *
 * @return {Object}
 */


function getEmptyObject() {
  return {};
}
/**
 * get empty Set
 *
 * @return {Set}
 */


function getEmptySet() {
  return new Set();
}

var _default = new Map([// deep copy
['ArrayBuffer', copyArrayBuffer], ['Boolean', copyBoolean], ['Buffer', copyBuffer], ['DataView', copyDataView], ['Date', copyDate], ['Number', copyNumber], ['RegExp', copyRegExp], ['String', copyString], // typed arrays
// TODO: pass bound function
['Float32Array', copyTypedArray], ['Float64Array', copyTypedArray], ['Int16Array', copyTypedArray], ['Int32Array', copyTypedArray], ['Int8Array', copyTypedArray], ['Uint16Array', copyTypedArray], ['Uint32Array', copyTypedArray], ['Uint8Array', copyTypedArray], ['Uint8ClampedArray', copyTypedArray], // shallow copy
['Array Iterator', shallowCopy], ['Map Iterator', shallowCopy], ['Promise', shallowCopy], ['Set Iterator', shallowCopy], ['String Iterator', shallowCopy], ['function', shallowCopy], ['global', shallowCopy], // NOTE: WeakMap and WeakSet cannot get entries
['WeakMap', shallowCopy], ['WeakSet', shallowCopy], // primitives
['boolean', shallowCopy], ['null', shallowCopy], ['number', shallowCopy], ['string', shallowCopy], ['symbol', shallowCopy], ['undefined', shallowCopy], // collections
// NOTE: return empty value, because recursively copy later.
['Arguments', getEmptyArray], ['Array', getEmptyArray], ['Map', getEmptyMap], ['Object', getEmptyObject], ['Set', getEmptySet] // NOTE: type-detect returns following types
// 'Location'
// 'Document'
// 'MimeTypeArray'
// 'PluginArray'
// 'HTMLQuoteElement'
// 'HTMLTableDataCellElement'
// 'HTMLTableHeaderCellElement'
// TODO: is type-detect never return 'object'?
// 'object'
]);

exports.default = _default;
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