123 lines
9.1 KiB
JavaScript
123 lines
9.1 KiB
JavaScript
"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("./index.js");
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var _is = require("../methods/is.js");
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var _singletons = require("../singletons.js");
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var _invariant = require("../invariant.js");
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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 ArrayValue = function (_ObjectValue) {
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_inherits(ArrayValue, _ObjectValue);
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function ArrayValue(realm, intrinsicName) {
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_classCallCheck(this, ArrayValue);
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return _possibleConstructorReturn(this, (ArrayValue.__proto__ || Object.getPrototypeOf(ArrayValue)).call(this, realm, realm.intrinsics.ArrayPrototype, intrinsicName));
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}
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_createClass(ArrayValue, [{
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key: "getKind",
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value: function getKind() {
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return "Array";
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}
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}, {
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key: "isSimpleObject",
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value: function isSimpleObject() {
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return this.$TypedArrayName === undefined;
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}
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// ECMA262 9.4.2.1
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}, {
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key: "$DefineOwnProperty",
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value: function $DefineOwnProperty(P, Desc) {
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var A = this;
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// 1. Assert: IsPropertyKey(P) is true.
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(0, _invariant2.default)((0, _is.IsPropertyKey)(this.$Realm, P), "expected a property key");
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// 2. If P is "length", then
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if (P === "length" || P instanceof _index.StringValue && P.value === "length") {
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// a. Return ? ArraySetLength(A, Desc).
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return _singletons.Properties.ArraySetLength(this.$Realm, A, Desc);
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} else if ((0, _is.IsArrayIndex)(this.$Realm, P)) {
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// 3. Else if P is an array index, then
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// a. Let oldLenDesc be OrdinaryGetOwnProperty(A, "length").
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var oldLenDesc = _singletons.Properties.OrdinaryGetOwnProperty(this.$Realm, A, "length");
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// b. Assert: oldLenDesc will never be undefined or an accessor descriptor because Array objects are
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// created with a length data property that cannot be deleted or reconfigured.
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(0, _invariant2.default)(oldLenDesc !== undefined && !(0, _is.IsAccessorDescriptor)(this.$Realm, oldLenDesc), "cannot be undefined or an accessor descriptor");
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_singletons.Properties.ThrowIfMightHaveBeenDeleted(oldLenDesc.value);
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// c. Let oldLen be oldLenDesc.[[Value]].
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var oldLen = oldLenDesc.value;
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(0, _invariant2.default)(oldLen instanceof _index.Value);
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oldLen = oldLen.throwIfNotConcrete();
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(0, _invariant2.default)(oldLen instanceof _index.NumberValue, "expected number value");
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oldLen = oldLen.value;
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// d. Let index be ! ToUint32(P).
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var index = _singletons.To.ToUint32(this.$Realm, typeof P === "string" ? new _index.StringValue(this.$Realm, P) : P);
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// e. If index ≥ oldLen and oldLenDesc.[[Writable]] is false, return false.
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if (index >= oldLen && oldLenDesc.writable === false) return false;
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// f. Let succeeded be ! OrdinaryDefineOwnProperty(A, P, Desc).
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var succeeded = _singletons.Properties.OrdinaryDefineOwnProperty(this.$Realm, A, P, Desc);
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// g. If succeeded is false, return false.
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if (succeeded === false) return false;
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// h. If index ≥ oldLen, then
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if (index >= oldLen) {
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// i. Set oldLenDesc.[[Value]] to index + 1.
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oldLenDesc.value = new _index.NumberValue(this.$Realm, index + 1);
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// ii. Let succeeded be OrdinaryDefineOwnProperty(A, "length", oldLenDesc).
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succeeded = _singletons.Properties.OrdinaryDefineOwnProperty(this.$Realm, A, "length", oldLenDesc);
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// iii. Assert: succeeded is true.
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(0, _invariant2.default)(succeeded, "expected length definition to succeed");
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}
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// i. Return true.
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return true;
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}
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// 1. Return OrdinaryDefineOwnProperty(A, P, Desc).
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return _singletons.Properties.OrdinaryDefineOwnProperty(this.$Realm, A, P, Desc);
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}
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}]);
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return ArrayValue;
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}(_index.ObjectValue);
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exports.default = ArrayValue;
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//# sourceMappingURL=ArrayValue.js.map
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