166 lines
4 KiB
TypeScript
166 lines
4 KiB
TypeScript
//// [propertyAccessOnTypeParameterWithConstraints2.ts]
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// generic types should behave as if they have properties of their constraint type
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class A {
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foo(): string { return ''; }
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}
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class B extends A {
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bar(): string {
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return '';
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}
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}
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class C<U extends A, T extends A> {
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f() {
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var x: U;
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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g(x: U) {
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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}
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//class C<U extends T, T extends A> {
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// f() {
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// var x: U;
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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// g(x: U) {
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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//}
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var r1 = (new C<B, A>()).f();
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var r1b = (new C<B, A>()).g(new B());
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interface I<U extends A, T extends A> {
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foo: U;
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}
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//interface I<U extends T, T extends A> {
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// foo: U;
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//}
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var i: I<B, A>;
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var r2 = i.foo.foo();
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var r2b = i.foo['foo']();
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var a: {
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<U extends A, T extends A>(): U;
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<U extends A, T extends A>(x: U): U;
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<U extends A, T extends A>(x: U, y: T): U;
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}
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//var a: {
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// <U extends T, T extends A>(): U;
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// <U extends T, T extends A>(x: U): U;
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// <U extends T, T extends A>(x: U, y: T): U;
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//}
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var r3 = a<A, A>().foo();
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var r3b = a()['foo']();
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// parameter supplied for type argument inference to succeed
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var aB = new B();
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var r3c = a(aB, aB).foo();
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var r3d = a(aB, aB)['foo']();
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var b = {
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foo: <U extends A, T extends A>(x: U, y: T) => {
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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}
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//var b = {
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// foo: <U extends T, T extends A>(x: U, y: T) => {
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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//}
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var r4 = b.foo(aB, aB); // no inferences for T so constraint isn't satisfied, error
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//// [propertyAccessOnTypeParameterWithConstraints2.js]
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// generic types should behave as if they have properties of their constraint type
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var __extends = this.__extends || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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__.prototype = b.prototype;
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d.prototype = new __();
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};
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var A = (function () {
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function A() {
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}
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A.prototype.foo = function () { return ''; };
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return A;
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})();
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var B = (function (_super) {
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__extends(B, _super);
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function B() {
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_super.apply(this, arguments);
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}
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B.prototype.bar = function () {
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return '';
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};
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return B;
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})(A);
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var C = (function () {
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function C() {
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}
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C.prototype.f = function () {
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var x;
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var a = x['foo'](); // should be string
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return a + x.foo();
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};
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C.prototype.g = function (x) {
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var a = x['foo'](); // should be string
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return a + x.foo();
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};
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return C;
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})();
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//class C<U extends T, T extends A> {
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// f() {
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// var x: U;
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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// g(x: U) {
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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//}
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var r1 = (new C()).f();
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var r1b = (new C()).g(new B());
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//interface I<U extends T, T extends A> {
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// foo: U;
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//}
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var i;
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var r2 = i.foo.foo();
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var r2b = i.foo['foo']();
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var a;
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//var a: {
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// <U extends T, T extends A>(): U;
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// <U extends T, T extends A>(x: U): U;
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// <U extends T, T extends A>(x: U, y: T): U;
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//}
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var r3 = a().foo();
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var r3b = a()['foo']();
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// parameter supplied for type argument inference to succeed
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var aB = new B();
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var r3c = a(aB, aB).foo();
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var r3d = a(aB, aB)['foo']();
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var b = {
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foo: function (x, y) {
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var a = x['foo'](); // should be string
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return a + x.foo();
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}
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};
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//var b = {
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// foo: <U extends T, T extends A>(x: U, y: T) => {
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// var a = x['foo'](); // should be string
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// return a + x.foo();
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// }
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//}
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var r4 = b.foo(aB, aB); // no inferences for T so constraint isn't satisfied, error
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