25개 이상의 토픽을 선택하실 수 없습니다. Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

1 line
5.1 KiB

  1. {"ast":null,"code":"'use strict';\n\nvar dP = require('./_object-dp').f;\n\nvar create = require('./_object-create');\n\nvar redefineAll = require('./_redefine-all');\n\nvar ctx = require('./_ctx');\n\nvar anInstance = require('./_an-instance');\n\nvar forOf = require('./_for-of');\n\nvar $iterDefine = require('./_iter-define');\n\nvar step = require('./_iter-step');\n\nvar setSpecies = require('./_set-species');\n\nvar DESCRIPTORS = require('./_descriptors');\n\nvar fastKey = require('./_meta').fastKey;\n\nvar validate = require('./_validate-collection');\n\nvar SIZE = DESCRIPTORS ? '_s' : 'size';\n\nvar getEntry = function getEntry(that, key) {\n // fast case\n var index = fastKey(key);\n var entry;\n if (index !== 'F') return that._i[index]; // frozen object case\n\n for (entry = that._f; entry; entry = entry.n) {\n if (entry.k == key) return entry;\n }\n};\n\nmodule.exports = {\n getConstructor: function getConstructor(wrapper, NAME, IS_MAP, ADDER) {\n var C = wrapper(function (that, iterable) {\n anInstance(that, C, NAME, '_i');\n that._t = NAME; // collection type\n\n that._i = create(null); // index\n\n that._f = undefined; // first entry\n\n that._l = undefined; // last entry\n\n that[SIZE] = 0; // size\n\n if (iterable != undefined) forOf(iterable, IS_MAP, that[ADDER], that);\n });\n redefineAll(C.prototype, {\n // 23.1.3.1 Map.prototype.clear()\n // 23.2.3.2 Set.prototype.clear()\n clear: function clear() {\n for (var that = validate(this, NAME), data = that._i, entry = that._f; entry; entry = entry.n) {\n entry.r = true;\n if (entry.p) entry.p = entry.p.n = undefined;\n delete data[entry.i];\n }\n\n that._f = that._l = undefined;\n that[SIZE] = 0;\n },\n // 23.1.3.3 Map.prototype.delete(key)\n // 23.2.3.4 Set.prototype.delete(value)\n 'delete': function _delete(key) {\n var that = validate(this, NAME);\n var entry = getEntry(that, key);\n\n if (entry) {\n var next = entry.n;\n var prev = entry.p;\n delete that._i[entry.i];\n entry.r = true;\n if (prev) prev.n = next;\n if (next) next.p = prev;\n if (that._f == entry) that._f = next;\n if (that._l == entry) that._l = prev;\n that[SIZE]--;\n }\n\n return !!entry;\n },\n // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)\n // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)\n forEach: function forEach(callbackfn\n /* , that = undefined */\n ) {\n validate(this, NAME);\n var f = ctx(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);\n var entry;\n\n while (entry = entry ? entry.n : this._f) {\n f(entry.v, entry.k, this); // revert to the last existing entry\n\n while (entry && entry.r) {\n entry = entry.p;\n }\n }\n },\n // 23.1.3.7 Map.prototype.has(key)\n // 23.2.3.7 Set.prototype.has(value)\n has: function has(key) {\n return !!getEntry(validate(this, NAME), key);\n }\n });\n if (DESCRIPTORS) dP(C.prototype, 'size', {\n get: function get() {\n return validate(this, NAME)[SIZE];\n }\n });\n return C;\n },\n def: function def(that, key, value) {\n var entry = getEntry(that, key);\n var prev, index; // change existing entry\n\n if (entry) {\n entry.v = value; // create new entry\n } else {\n that._l = entry = {\n i: index = fastKey(key, true),\n // <- index\n k: key,\n // <- key\n v: value,\n // <- value\n p: prev = that._l,\n // <- previous entry\n n: undefined,\n // <- next entry\n r: false // <- removed\n\n };\n if (!that._f) that._f = entry;\n if (prev) prev.n = entry;\n that[SIZE]++; // add to index\n\n if (index !== 'F') that._i[index] = entry;\n }\n\n return that;\n },\n getEntry: getEntry,\n setStrong: function setStrong(C, NAME, IS_MAP) {\n // add .keys, .values, .entries, [@@iterator]\n // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11\n $iterDefine(C, NAME, function (iterated, kind) {\n this._t = validate(iterated, NAME); // target\n\n this._k = kind; // kind\n\n this._l = undefined; // previous\n }, function () {\n var that = this;\n var kind = that._k;\n var entry = that._l; // revert to the last existing entry\n\n while (entry && entry.r) {\n entry = entry.p;\n } // get next entry\n\n\n if (!that._t || !(that._l = entry = entry ? entry.n : that._t._f)) {\n // or finish the iteration\n that._t = undefined;\n return step(1);\n } // return step by kind\n\n\n if (kind == 'keys') return step(0, entry.k);\n if (kind == 'values') return step(0, entry.v);\n return step(0, [entry.k, entry.v]);\n }, IS_MAP ? 'entries' : 'values', !IS_MAP, true); // add [@@species], 23.1.2.2, 23.2.2.2\n\n setSpecies(NAME);\n }\n};","map":null,"metadata":{},"sourceType":"script"}