implement __proto__ field for all objects
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208
src/lib/libs/values/object.ts
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208
src/lib/libs/values/object.ts
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@ -0,0 +1,208 @@
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import { Boolean } from "./boolean.ts";
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import { TypeError } from "./errors.ts";
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import { Number } from "./number.ts";
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import { func, object } from "../primordials.ts";
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import { String } from "./string.ts";
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import { symbols, valueKey } from "../utils.ts";
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import { Symbol } from "../values/symbol.ts";
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export const Object = (() => {
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class Object {
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public toString(this: unknown) {
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if (this === undefined) return "[object Undefined]";
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else if (this === null) return "[object Null]";
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else if (typeof this === "object") {
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if (symbols.toStringTag in this) return "[object " + (this as any)[symbols.toStringTag] + "]";
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else if (object.isArray(this)) return "[object Array]";
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else return "[object Object]";
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}
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else if (typeof this === "number" || this instanceof Number) return "[object Number]";
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else if (typeof this === "symbol" || this instanceof Symbol) return "[object Symbol]";
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else if (typeof this === "string" || this instanceof String) return "[object String]";
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else if (typeof this === "boolean" || this instanceof Boolean) return "[object Boolean]";
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else if (typeof this === "function") return "[object Function]";
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}
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public valueOf() {
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return this;
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}
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public hasOwnProperty(key: string) {
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return object.getOwnMember(this, key) != null;
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}
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public get __proto__() {
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return object.getPrototype(this);
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}
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public set __proto__(val) {
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object.setPrototype(this, val);
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}
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public constructor (value?: unknown) {
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if (typeof value === 'object' && value !== null) return value as any;
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if (typeof value === 'string') return new String(value) as any;
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if (typeof value === 'number') return new Number(value) as any;
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if (typeof value === 'boolean') return new Boolean(value) as any;
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if (typeof value === 'symbol') {
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const res: Symbol = {} as any;
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object.setPrototype(res, Symbol.prototype);
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res[valueKey] = value;
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return res as any;
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}
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return {} as any;
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}
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public static getOwnPropertyDescriptor(obj: object, key: any) {
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return object.getOwnMember(obj, key);
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}
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public static getOwnPropertyNames(obj: object): string[] {
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return object.getOwnMembers(obj, false);
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}
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public static getOwnPropertySymbols(obj: object): symbol[] {
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return object.getOwnSymbolMembers(obj, false);
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}
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public static defineProperty(obj: object, key: string | symbol, desc: PropertyDescriptor) {
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if (obj === null || typeof obj !== "function" && typeof obj !== "object") {
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throw new TypeError("Object.defineProperty called on non-object");
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}
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if (desc === null || typeof desc !== "function" && typeof desc !== "object") {
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throw new TypeError("Property description must be an object: " + desc);
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}
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const res: any = {};
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if ("get" in desc || "set" in desc) {
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if ("get" in desc) {
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const get = desc.get;
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if (get !== undefined && typeof get !== "function") throw new TypeError("Getter must be a function: " + get);
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res.g = get;
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}
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if ("set" in desc) {
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const set = desc.set;
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if (set !== undefined && typeof set !== "function") throw new TypeError("Setter must be a function: " + set);
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res.s = set;
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}
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if ("enumerable" in desc) res.e = !!desc.enumerable;
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if ("configurable" in desc) res.e = !!desc.configurable;
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if (!object.defineProperty(obj, key, res)) throw new TypeError("Cannot redefine property: " + String(key));
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}
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else {
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if ("enumerable" in desc) res.e = !!desc.enumerable;
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if ("configurable" in desc) res.e = !!desc.configurable;
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if ("writable" in desc) res.w = !!desc.writable;
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if ("value" in desc) res.v = desc.value;
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if (!object.defineField(obj, key, res)) throw new TypeError("Cannot redefine property: " + String(key));
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}
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return obj;
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}
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public static defineProperties(obj: object, desc: PropertyDescriptorMap) {
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const keys = object.getOwnMembers(desc, true) as ((keyof typeof obj) & string)[];
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const symbols = object.getOwnSymbolMembers(desc, true) as ((keyof typeof obj) & symbol)[];
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for (let i = 0; i < keys.length; i++) {
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Object.defineProperty(obj, keys[i], desc[keys[i]]);
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}
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for (let i = 0; i < symbols.length; i++) {
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Object.defineProperty(obj, symbols[i], desc[symbols[i]]);
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}
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return obj;
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}
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public static create(proto: object, desc?: PropertyDescriptorMap) {
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let res = object.setPrototype({}, proto);
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if (desc != null) this.defineProperties(res, desc);
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return res;
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}
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public static assign(target: any) {
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for (let i = 1; i < arguments.length; i++) {
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const obj = arguments[i];
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const keys = object.getOwnMembers(obj, false);
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const symbols = object.getOwnSymbolMembers(obj, false);
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for (let j = 0; j < keys.length; j++) {
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target[keys[j]] = obj[keys[j]];
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}
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for (let j = 0; j < symbols.length; j++) {
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target[symbols[j]] = obj[symbols[j]];
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}
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}
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return target;
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}
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public static setPrototypeOf(obj: object, proto: object | null) {
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object.setPrototype(obj, proto!);
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}
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public static getPrototypeOf(obj: object) {
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return object.getPrototype(obj) || null;
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}
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public static keys(obj: any) {
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const res: any[] = [];
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const keys = object.getOwnMembers(obj, true);
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const symbols = object.getOwnSymbolMembers(obj, true);
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for (let i = 0; i < keys.length; i++) {
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res[res.length] = keys[i];
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}
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for (let i = 0; i < symbols.length; i++) {
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res[res.length] = symbols[i];
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}
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return res;
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}
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public static values(obj: any) {
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const res: any[] = [];
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const keys = object.getOwnMembers(obj, true);
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const symbols = object.getOwnSymbolMembers(obj, true);
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for (let i = 0; i < keys.length; i++) {
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res[res.length] = obj[keys[i]];
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}
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for (let i = 0; i < symbols.length; i++) {
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res[res.length] = obj[symbols[i]];
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}
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return res;
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}
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public static entries(obj: any) {
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const res: [any, any][] = [];
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const keys = object.getOwnMembers(obj, true);
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const symbols = object.getOwnSymbolMembers(obj, true);
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for (let i = 0; i < keys.length; i++) {
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res[res.length] = [keys[i], obj[keys[i]]];
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}
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for (let i = 0; i < symbols.length; i++) {
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res[res.length] = [symbols[i], obj[symbols[i]]];
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}
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return res;
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}
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public static preventExtensions(obj: object) {
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object.preventExt(obj);
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return obj;
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}
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public static seal(obj: object) {
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object.seal(obj);
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return obj;
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}
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public static freeze(obj: object) {
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object.freeze(obj);
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return obj;
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}
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}
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object.defineProperty(Object.prototype, "__proto__", { e: false });
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object.setPrototype(Object.prototype, undefined);
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func.setCallable(Object, true);
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func.setConstructable(Object, true);
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return Object as any as typeof Object & ((value?: unknown) => object);
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})();
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export type Object = InstanceType<typeof Object>;
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@ -29,7 +29,7 @@ public class FieldMemberNode implements Member {
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if (value == null) target.add(Instruction.pushUndefined());
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else value.compile(target, true);
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target.add(Instruction.defField());
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target.add(Instruction.storeMember());
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}
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public FieldMemberNode(Location loc, Node key, Node value) {
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