'use strict'; var redefineAll = require('./_redefine-all'); var getWeak = require('./_meta').getWeak; var anObject = require('./_an-object'); var isObject = require('./_is-object'); var anInstance = require('./_an-instance'); var forOf = require('./_for-of'); var createArrayMethod = require('./_array-methods'); var $has = require('./_has'); var validate = require('./_validate-collection'); var arrayFind = createArrayMethod(5); var arrayFindIndex = createArrayMethod(6); var id = 0; // fallback for uncaught frozen keys var uncaughtFrozenStore = function (that) { return that._l || (that._l = new UncaughtFrozenStore()); }; var UncaughtFrozenStore = function () { this.a = []; }; var findUncaughtFrozen = function (store, key) { return arrayFind(store.a, function (it) { return it[0] === key; }); }; UncaughtFrozenStore.prototype = { get: function (key) { var entry = findUncaughtFrozen(this, key); if (entry) return entry[1]; }, has: function (key) { return !!findUncaughtFrozen(this, key); }, set: function (key, value) { var entry = findUncaughtFrozen(this, key); if (entry) entry[1] = value; else this.a.push([key, value]); }, 'delete': function (key) { var index = arrayFindIndex(this.a, function (it) { return it[0] === key; }); if (~index) this.a.splice(index, 1); return !!~index; } }; module.exports = { getConstructor: function (wrapper, NAME, IS_MAP, ADDER) { var C = wrapper(function (that, iterable) { anInstance(that, C, NAME, '_i'); that._t = NAME; // collection type that._i = id++; // collection id that._l = undefined; // leak store for uncaught frozen objects if (iterable != undefined) forOf(iterable, IS_MAP, that[ADDER], that); }); redefineAll(C.prototype, { // 23.3.3.2 WeakMap.prototype.delete(key) // 23.4.3.3 WeakSet.prototype.delete(value) 'delete': function (key) { if (!isObject(key)) return false; var data = getWeak(key); if (data === true) return uncaughtFrozenStore(validate(this, NAME))['delete'](key); return data && $has(data, this._i) && delete data[this._i]; }, // 23.3.3.4 WeakMap.prototype.has(key) // 23.4.3.4 WeakSet.prototype.has(value) has: function has(key) { if (!isObject(key)) return false; var data = getWeak(key); if (data === true) return uncaughtFrozenStore(validate(this, NAME)).has(key); return data && $has(data, this._i); } }); return C; }, def: function (that, key, value) { var data = getWeak(anObject(key), true); if (data === true) uncaughtFrozenStore(that).set(key, value); else data[that._i] = value; return that; }, ufstore: uncaughtFrozenStore };