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Merge pull request #13743 from Microsoft/mixinClasses
Mixin classes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| //// [mixinClassesAnnotated.ts] | ||
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| type Constructor<T> = new(...args: any[]) => T; | ||
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| class Base { | ||
| constructor(public x: number, public y: number) {} | ||
| } | ||
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| class Derived extends Base { | ||
| constructor(x: number, y: number, public z: number) { | ||
| super(x, y); | ||
| } | ||
| } | ||
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| interface Printable { | ||
| print(): void; | ||
| } | ||
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| const Printable = <T extends Constructor<Base>>(superClass: T): Constructor<Printable> & { message: string } & T => | ||
| class extends superClass { | ||
| static message = "hello"; | ||
| print() { | ||
| const output = this.x + "," + this.y; | ||
| } | ||
| } | ||
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| interface Tagged { | ||
| _tag: string; | ||
| } | ||
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| function Tagged<T extends Constructor<{}>>(superClass: T): Constructor<Tagged> & T { | ||
| class C extends superClass { | ||
| _tag: string; | ||
| constructor(...args: any[]) { | ||
| super(...args); | ||
| this._tag = "hello"; | ||
| } | ||
| } | ||
| return C; | ||
| } | ||
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| const Thing1 = Tagged(Derived); | ||
| const Thing2 = Tagged(Printable(Derived)); | ||
| Thing2.message; | ||
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| function f1() { | ||
| const thing = new Thing1(1, 2, 3); | ||
| thing.x; | ||
| thing._tag; | ||
| } | ||
|
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| function f2() { | ||
| const thing = new Thing2(1, 2, 3); | ||
| thing.x; | ||
| thing._tag; | ||
| thing.print(); | ||
| } | ||
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| class Thing3 extends Thing2 { | ||
| constructor(tag: string) { | ||
| super(10, 20, 30); | ||
| this._tag = tag; | ||
| } | ||
| test() { | ||
| this.print(); | ||
| } | ||
| } | ||
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| //// [mixinClassesAnnotated.js] | ||
| var __extends = (this && this.__extends) || (function () { | ||
| var extendStatics = Object.setPrototypeOf || | ||
| ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || | ||
| function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; | ||
| return function (d, b) { | ||
| extendStatics(d, b); | ||
| function __() { this.constructor = d; } | ||
| d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); | ||
| }; | ||
| })(); | ||
| var Base = (function () { | ||
| function Base(x, y) { | ||
| this.x = x; | ||
| this.y = y; | ||
| } | ||
| return Base; | ||
| }()); | ||
| var Derived = (function (_super) { | ||
| __extends(Derived, _super); | ||
| function Derived(x, y, z) { | ||
| var _this = _super.call(this, x, y) || this; | ||
| _this.z = z; | ||
| return _this; | ||
| } | ||
| return Derived; | ||
| }(Base)); | ||
| var Printable = function (superClass) { return _a = (function (_super) { | ||
| __extends(class_1, _super); | ||
| function class_1() { | ||
| return _super !== null && _super.apply(this, arguments) || this; | ||
| } | ||
| class_1.prototype.print = function () { | ||
| var output = this.x + "," + this.y; | ||
| }; | ||
| return class_1; | ||
| }(superClass)), | ||
| _a.message = "hello", | ||
| _a; var _a; }; | ||
| function Tagged(superClass) { | ||
| var C = (function (_super) { | ||
| __extends(C, _super); | ||
| function C() { | ||
| var args = []; | ||
| for (var _i = 0; _i < arguments.length; _i++) { | ||
| args[_i] = arguments[_i]; | ||
| } | ||
| var _this = _super.apply(this, args) || this; | ||
| _this._tag = "hello"; | ||
| return _this; | ||
| } | ||
| return C; | ||
| }(superClass)); | ||
| return C; | ||
| } | ||
| var Thing1 = Tagged(Derived); | ||
| var Thing2 = Tagged(Printable(Derived)); | ||
| Thing2.message; | ||
| function f1() { | ||
| var thing = new Thing1(1, 2, 3); | ||
| thing.x; | ||
| thing._tag; | ||
| } | ||
| function f2() { | ||
| var thing = new Thing2(1, 2, 3); | ||
| thing.x; | ||
| thing._tag; | ||
| thing.print(); | ||
| } | ||
| var Thing3 = (function (_super) { | ||
| __extends(Thing3, _super); | ||
| function Thing3(tag) { | ||
| var _this = _super.call(this, 10, 20, 30) || this; | ||
| _this._tag = tag; | ||
| return _this; | ||
| } | ||
| Thing3.prototype.test = function () { | ||
| this.print(); | ||
| }; | ||
| return Thing3; | ||
| }(Thing2)); | ||
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| //// [mixinClassesAnnotated.d.ts] | ||
| declare type Constructor<T> = new (...args: any[]) => T; | ||
| declare class Base { | ||
| x: number; | ||
| y: number; | ||
| constructor(x: number, y: number); | ||
| } | ||
| declare class Derived extends Base { | ||
| z: number; | ||
| constructor(x: number, y: number, z: number); | ||
| } | ||
| interface Printable { | ||
| print(): void; | ||
| } | ||
| declare const Printable: <T extends Constructor<Base>>(superClass: T) => Constructor<Printable> & { | ||
| message: string; | ||
| } & T; | ||
| interface Tagged { | ||
| _tag: string; | ||
| } | ||
| declare function Tagged<T extends Constructor<{}>>(superClass: T): Constructor<Tagged> & T; | ||
| declare const Thing1: Constructor<Tagged> & typeof Derived; | ||
| declare const Thing2: Constructor<Tagged> & Constructor<Printable> & { | ||
| message: string; | ||
| } & typeof Derived; | ||
| declare function f1(): void; | ||
| declare function f2(): void; | ||
| declare class Thing3 extends Thing2 { | ||
| constructor(tag: string); | ||
| test(): void; | ||
| } |
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