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175 lines
4.5 KiB
JavaScript
175 lines
4.5 KiB
JavaScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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/// <reference path="../../core/internal.d.ts" />
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const core = globalThis.Deno.core;
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const ops = core.ops;
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import * as webidl from "ext:deno_webidl/00_webidl.js";
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const primordials = globalThis.__bootstrap.primordials;
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const {
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SafeArrayIterator,
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Symbol,
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SymbolFor,
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ObjectDefineProperty,
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ObjectFromEntries,
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ObjectEntries,
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ReflectGet,
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ReflectHas,
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Proxy,
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} = primordials;
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const _persistent = Symbol("[[persistent]]");
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class Storage {
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[_persistent];
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constructor() {
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webidl.illegalConstructor();
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}
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get length() {
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webidl.assertBranded(this, StoragePrototype);
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return ops.op_webstorage_length(this[_persistent]);
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}
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key(index) {
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webidl.assertBranded(this, StoragePrototype);
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const prefix = "Failed to execute 'key' on 'Storage'";
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webidl.requiredArguments(arguments.length, 1, prefix);
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index = webidl.converters["unsigned long"](index, prefix, "Argument 1");
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return ops.op_webstorage_key(index, this[_persistent]);
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}
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setItem(key, value) {
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webidl.assertBranded(this, StoragePrototype);
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const prefix = "Failed to execute 'setItem' on 'Storage'";
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webidl.requiredArguments(arguments.length, 2, prefix);
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key = webidl.converters.DOMString(key, prefix, "Argument 1");
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value = webidl.converters.DOMString(value, prefix, "Argument 2");
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ops.op_webstorage_set(key, value, this[_persistent]);
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}
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getItem(key) {
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webidl.assertBranded(this, StoragePrototype);
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const prefix = "Failed to execute 'getItem' on 'Storage'";
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webidl.requiredArguments(arguments.length, 1, prefix);
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key = webidl.converters.DOMString(key, prefix, "Argument 1");
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return ops.op_webstorage_get(key, this[_persistent]);
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}
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removeItem(key) {
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webidl.assertBranded(this, StoragePrototype);
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const prefix = "Failed to execute 'removeItem' on 'Storage'";
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webidl.requiredArguments(arguments.length, 1, prefix);
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key = webidl.converters.DOMString(key, prefix, "Argument 1");
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ops.op_webstorage_remove(key, this[_persistent]);
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}
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clear() {
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webidl.assertBranded(this, StoragePrototype);
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ops.op_webstorage_clear(this[_persistent]);
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}
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}
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const StoragePrototype = Storage.prototype;
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function createStorage(persistent) {
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const storage = webidl.createBranded(Storage);
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storage[_persistent] = persistent;
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const proxy = new Proxy(storage, {
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deleteProperty(target, key) {
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if (typeof key == "symbol") {
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delete target[key];
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} else {
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target.removeItem(key);
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}
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return true;
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},
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defineProperty(target, key, descriptor) {
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if (typeof key == "symbol") {
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ObjectDefineProperty(target, key, descriptor);
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} else {
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target.setItem(key, descriptor.value);
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}
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return true;
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},
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get(target, key) {
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if (typeof key == "symbol") return target[key];
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if (ReflectHas(target, key)) {
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return ReflectGet(...new SafeArrayIterator(arguments));
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} else {
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return target.getItem(key) ?? undefined;
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}
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},
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set(target, key, value) {
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if (typeof key == "symbol") {
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ObjectDefineProperty(target, key, {
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value,
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configurable: true,
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});
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} else {
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target.setItem(key, value);
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}
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return true;
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},
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has(target, p) {
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return p === SymbolFor("Deno.customInspect") ||
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(typeof target.getItem(p)) === "string";
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},
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ownKeys() {
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return ops.op_webstorage_iterate_keys(persistent);
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},
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getOwnPropertyDescriptor(target, key) {
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if (arguments.length === 1) {
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return undefined;
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}
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if (ReflectHas(target, key)) {
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return undefined;
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}
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const value = target.getItem(key);
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if (value === null) {
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return undefined;
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}
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return {
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value,
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enumerable: true,
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configurable: true,
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writable: true,
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};
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},
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});
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proxy[SymbolFor("Deno.customInspect")] = function (inspect) {
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return `${this.constructor.name} ${
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inspect({
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length: this.length,
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...ObjectFromEntries(ObjectEntries(proxy)),
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})
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}`;
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};
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return proxy;
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}
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let localStorageStorage;
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function localStorage() {
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if (!localStorageStorage) {
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localStorageStorage = createStorage(true);
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}
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return localStorageStorage;
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}
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let sessionStorageStorage;
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function sessionStorage() {
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if (!sessionStorageStorage) {
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sessionStorageStorage = createStorage(false);
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}
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return sessionStorageStorage;
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}
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export { localStorage, sessionStorage, Storage };
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