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s.golasch
245
build/node_modules/prepack/lib/values/ArgumentsExotic.js
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245
build/node_modules/prepack/lib/values/ArgumentsExotic.js
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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var _index = require("../values/index.js");
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var _is = require("../methods/is.js");
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var _has = require("../methods/has.js");
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var _abstract = require("../methods/abstract.js");
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var _get = require("../methods/get.js");
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var _singletons = require("../singletons.js");
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var _invariant = require("../invariant");
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var _invariant2 = _interopRequireDefault(_invariant);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
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function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
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* Copyright (c) 2017-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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var ArgumentsExotic = function (_ObjectValue) {
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_inherits(ArgumentsExotic, _ObjectValue);
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function ArgumentsExotic(realm, intrinsicName) {
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_classCallCheck(this, ArgumentsExotic);
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return _possibleConstructorReturn(this, (ArgumentsExotic.__proto__ || Object.getPrototypeOf(ArgumentsExotic)).call(this, realm, realm.intrinsics.ObjectPrototype, intrinsicName));
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}
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_createClass(ArgumentsExotic, [{
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key: "$GetOwnProperty",
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// ECMA262 9.4.4.1
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value: function $GetOwnProperty(P) {
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// 1. Let args be the arguments object.
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var args = this;
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// 2. Let desc be OrdinaryGetOwnProperty(args, P).
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var desc = _singletons.Properties.OrdinaryGetOwnProperty(this.$Realm, args, P);
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// 3. If desc is undefined, return desc.
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if (desc === undefined) return undefined;
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_singletons.Properties.ThrowIfMightHaveBeenDeleted(desc.value);
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// 4. Let map be args.[[ParameterMap]].
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var map = args.$ParameterMap;
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(0, _invariant2.default)(map);
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// 5. Let isMapped be ! HasOwnProperty(map, P).
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var isMapped = (0, _has.HasOwnProperty)(this.$Realm, map, P);
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// 6. If isMapped is true, then
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if (isMapped === true) {
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// a. Set desc.[[Value]] to Get(map, P).
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desc.value = (0, _get.Get)(this.$Realm, map, P);
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}
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// 7. Return desc.
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return desc;
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}
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// ECMA262 9.4.4.2
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}, {
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key: "$DefineOwnProperty",
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value: function $DefineOwnProperty(P, Desc) {
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// 1. Let args be the arguments object.
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var args = this;
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// 2. Let map be args.[[ParameterMap]].
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var map = args.$ParameterMap;
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(0, _invariant2.default)(map);
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// 3. Let isMapped be HasOwnProperty(map, P).
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var isMapped = (0, _has.HasOwnProperty)(this.$Realm, map, P);
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// 4. Let newArgDesc be Desc.
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var newArgDesc = Desc;
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// 5. If isMapped is true and IsDataDescriptor(Desc) is true, then
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if (isMapped === true && (0, _is.IsDataDescriptor)(this.$Realm, Desc) === true) {
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// a. If Desc.[[Value]] is not present and Desc.[[Writable]] is present and its value is false, then
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if (Desc.value === undefined && Desc.writable === false) {
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// i. Let newArgDesc be a copy of Desc.
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newArgDesc = Object.assign({}, Desc);
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// ii. Set newArgDesc.[[Value]] to Get(map, P).
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newArgDesc.value = (0, _get.Get)(this.$Realm, map, P);
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}
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}
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// 6. Let allowed be ? OrdinaryDefineOwnProperty(args, P, newArgDesc).
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var allowed = _singletons.Properties.OrdinaryDefineOwnProperty(this.$Realm, args, P, newArgDesc);
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// 7. If allowed is false, return false.
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if (allowed === false) return false;
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// 8. If isMapped is true, then
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if (isMapped === true) {
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// a. If IsAccessorDescriptor(Desc) is true, then
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if ((0, _is.IsAccessorDescriptor)(this.$Realm, Desc) === true) {
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// i. Call map.[[Delete]](P).
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map.$Delete(P);
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} else {
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// b. Else,
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// i. If Desc.[[Value]] is present, then
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if (Desc.value !== undefined) {
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// 1. Let setStatus be Set(map, P, Desc.[[Value]], false).
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(0, _invariant2.default)(Desc.value instanceof _index.Value);
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var setStatus = _singletons.Properties.Set(this.$Realm, map, P, Desc.value, false);
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// 2. Assert: setStatus is true because formal parameters mapped by argument objects are always writable.
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(0, _invariant2.default)(setStatus === true);
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}
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// ii. If Desc.[[Writable]] is present and its value is false, then
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if (Desc.writable === false) {
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// 1. Call map.[[Delete]](P).
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map.$Delete(P);
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}
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}
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}
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// 9. Return true.
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return true;
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}
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// ECMA262 9.4.4.3
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}, {
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key: "$Get",
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value: function $Get(P, Receiver) {
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// 1. Let args be the arguments object.
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var args = this;
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// 2. Let map be args.[[ParameterMap]].
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var map = args.$ParameterMap;
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(0, _invariant2.default)(map);
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// 3. Let isMapped be ! HasOwnProperty(map, P).
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var isMapped = (0, _has.HasOwnProperty)(this.$Realm, map, P);
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// 4. If isMapped is false, then
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if (isMapped === false) {
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// a. Return ? OrdinaryGet(args, P, Receiver).
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return (0, _get.OrdinaryGet)(this.$Realm, args, P, Receiver);
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} else {
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// 5. Else map contains a formal parameter mapping for P,
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// b. Return Get(map, P).
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return (0, _get.Get)(this.$Realm, map, P);
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}
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}
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// ECMA262 9.4.4.4
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}, {
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key: "$Set",
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value: function $Set(P, V, Receiver) {
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// 1. Let args be the arguments object.
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var args = this;
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var isMapped = void 0,
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map = void 0;
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// 2. If SameValue(args, Receiver) is false, then
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if ((0, _abstract.SameValuePartial)(this.$Realm, args, Receiver) === false) {
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// a. Let isMapped be false.
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isMapped = false;
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} else {
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// 3. Else,
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// a. Let map be args.[[ParameterMap]].
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map = args.$ParameterMap;
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(0, _invariant2.default)(map);
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// b. Let isMapped be ! HasOwnProperty(map, P).
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isMapped = (0, _has.HasOwnProperty)(this.$Realm, map, P);
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}
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// 4. If isMapped is true, then
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if (isMapped === true) {
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(0, _invariant2.default)(map);
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// a. Let setStatus be Set(map, P, V, false).
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var setStatus = _singletons.Properties.Set(this.$Realm, map, P, V, false);
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// b. Assert: setStatus is true because formal parameters mapped by argument objects are always writable.
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(0, _invariant2.default)(setStatus === true);
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}
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// 5. Return ? OrdinarySet(args, P, V, Receiver).
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return _singletons.Properties.OrdinarySet(this.$Realm, args, P, V, Receiver);
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}
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// ECMA262 9.4.4.5
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}, {
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key: "$Delete",
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value: function $Delete(P) {
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// 1. Let args be the arguments object.
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var args = this;
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// 2. Let map be args.[[ParameterMap]].
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var map = args.$ParameterMap;
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(0, _invariant2.default)(map);
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// 3. Let isMapped be ! HasOwnProperty(map, P).
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var isMapped = (0, _has.HasOwnProperty)(this.$Realm, map, P);
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// 4. Let result be ? OrdinaryDelete(args, P).
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var result = _singletons.Properties.OrdinaryDelete(this.$Realm, args, P);
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// 5. If result is true and isMapped is true, then
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if (result === true && isMapped === true) {
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// a. Call map.[[Delete]](P).
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map.$Delete(P);
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}
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// 6. Return result.
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return result;
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}
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}]);
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return ArgumentsExotic;
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}(_index.ObjectValue);
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exports.default = ArgumentsExotic;
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//# sourceMappingURL=ArgumentsExotic.js.map
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