@sula/ruler/lib/utils/lang.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.matchNameList = matchNameList;
exports.transObjToArr = transObjToArr;
exports.transArrToObj = transArrToObj;
exports.resetObj = resetObj;

var _toArray = _interopRequireDefault(require("./toArray"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * 'a' ['a'] = true
 * ['a'] ['a', 'b'] = false
 */
function matchNameList(name, changedName) {
  var namePathArray = (0, _toArray.default)(name);
  var changedNamePathArray = (0, _toArray.default)(changedName);

  if (namePathArray.length !== changedNamePathArray.length) {
    return false;
  }

  return namePathArray.every(function (nameUnit, i) {
    return changedNamePathArray[i] === nameUnit;
  });
}
/**
 * obj: { 0: [{name: 1}], 1: [{name: 2}], 2: undefined }
 * len: 2
 * return: [{name:1}, {name:2}]
 */


function transObjToArr(obj, len) {
  var arr = [];

  for (var i = 0; i < len; i += 1) {
    arr.push(obj[i]);
  }

  return arr;
}
/**
 * arr: [{name: 1}]
 * len: 2
 * return: {0: {name:1}, 1: undefined}
 */


function transArrToObj(arr, len) {
  var obj = Object.create(null);

  for (var i = 0; i < len; i += 1) {
    obj[i] = arr[i];
  }

  return obj;
}
/**
 * obj: { 0: [{name: 1}], 1: [{name: 2}], 2: [{name: 3}] }
 * len: 2
 * return: { 0: [{name: 1}], 1: [{name: 2}], 2: undefined }
 */


function resetObj(obj, len) {
  var keys = Object.keys(obj);
  var oLen = keys.length;

  if (oLen <= len) {
    return obj;
  }

  for (var i = len; i < oLen; i += 1) {
    obj[i] = undefined;
  }

  return obj;
}